Entries |
Document | Title | Date |
20080208021 | IMPLANTABLE TISSUE PERFUSION SENSING SYSTEM AND METHOD - A medical device for sensing cardiac events that includes a plurality of electrodes sensing cardiac signals utilized to identify a cardiac event, a plurality of light sources capable of emitting light at a plurality of wavelengths, and a detector to detect the emitted light. A processor determines a plurality of light measurements in response to the emitted light detected by the detector, an isobestic blood volume index in response to determined light measurements of the plurality of light measurements from a first light source of the plurality of light sources emitting light at an isobestic wavelength, determines an oxygen index associated with light measurements of the plurality of light measurements from a light source of the plurality of light sources other than the first light source, and verifies the identifying of the cardiac event in response to the determined isobestic blood volume index and the determined oxygen index. | 08-28-2008 |
20080221417 | System and method for detection of venous pulsation - In accordance with an embodiment of the present technique, there is provided methods and systems for detecting the presence of venous pulsation by adjusting the sensitivity of a detection algorithm based on a sensor characteristic and/or notifying a caregiver of the presence of venous pulsation by ceasing display of physiological parameters. An exemplary embodiment includes receiving one or more signals from a sensor, the one or more signals corresponding to absorption of light in a patient's tissue; calculating one or more physiological parameters of the patient based on the one or more signals; displaying the patient's physiological parameters; enabling detection of venous pulsation with variable sensitivity based on a location of the sensor; and suspending or terminating the display of the one or more of the patient's physiological parameters when venous pulsation is detected. | 09-11-2008 |
20080221418 | NONINVASIVE MULTI-PARAMETER PATIENT MONITOR - Embodiments of the present disclosure include a handheld multi-parameter patient monitor capable of determining multiple physiological parameters from the output of a light sensitive detector capable of detecting light attenuated by body tissue. For example, in an embodiment, the monitor is capable of advantageously and accurately displaying one or more of pulse rate, plethysmograph data, perfusion quality, signal confidence, and values of blood constituents in body tissue, including for example, arterial carbon monoxide saturation, methemoglobin saturation, total hemoglobin, arterial oxygen saturation, fractional arterial oxygen saturation, or the like. In an embodiment, the monitor advantageously includes a plurality of display modes enabling more parameter data to be displayed than the available physical display real estate. In an embodiment, the monitor advantageously includes a mode indicator to inform a user as to which parameter measurement would be displayed in one or more display areas upon actuation of a mode selector. | 09-11-2008 |
20080221419 | METHOD AND SYSTEM FOR MONITORING A HEALTH CONDITION - A system and method for monitoring a health condition are disclosed. The system includes a patient management application, a data store and a monitoring device. The monitoring device includes an optical sensor, a Doppler sensor, and a computing device adapted to provide health parameter values including oxygen saturation of the blood, blood flow, blood pressure, heart rate, and cardiac output. | 09-11-2008 |
20080249382 | BLOOD PRESSURE MONITORING APPARATUS AND METHOD - The blood pressure monitoring apparatus and method are disclosed that can monitor a blood pressure of a subject using an electrocardiogram signal, a pulse wave signal and a body characteristic information of the subject, wherein the electrocardiogram signal and the pulse wave signal of the subject are monitored to remove a noise signal generated from monitoring of the pulse wave signal, allowing monitoring a precise blood pressure of the subject, and calculating the pulse wave analysis information using the monitored pulse wave signal, and using the electrocardiogram signal and the pulse wave signal to calculate a pulse transit time (PPT), and plugging a calculated pulse wave propagation time, pulse wave analysis information and body characteristic information of the subject into a predetermined regression equation to monitor the blood pressure. | 10-09-2008 |
20080262327 | Apparatus for evaluating biological function, a method for evaluating biological function, a living body probe, a living body probe mounting device, a living body probe support device and a living body probe mounting accessory - The apparatus for evaluating biological function of the present invention has living body probes | 10-23-2008 |
20080275322 | Optical sensor biosignal measurement apparatus and method of controlling optical sensor of the apparatus - An optical sensor biosignal measurement apparatus including an optical sensor having a luminous element to emit light towards the skin of a user and a photo detector to detect light from the skin of the user; a light quantity adjustment member to adjust an optical transmission area of the photo detector; and a light quantity controller to detect the quantity of light detected by the photo detector, and control the light quantity adjustment member to adjust the optical transmission area of the photo detector according to the quantity of light is provided. | 11-06-2008 |
20080287757 | Sensor with signature of data relating to sensor - A sensor has codes useful for a monitor which can be authenticated as accurate. The sensor produces a signal corresponding to a measured physiological characteristic and provides codes which can be assured of being accurate and authentic when used by a monitor. A memory associated with the sensor stores both data relating to the sensor and a digital signature. The digital signature authenticates the quality of the code by ensuring it was generated by an entity having predetermined quality controls, and ensure the code is accurate. | 11-20-2008 |
20090018421 | PHYSIOLOGICAL STRESS DETECTOR DEVICE AND SYSTEM - A non-invasive device and a system for monitoring and measuring blood saturation and heart pulse rate of a baby or infant is provided. The device includes a housing unit configured to be integrated within apparatus, which is attachable proximate to a limb being measured. The housing unit includes at least one light source, providing light directed toward the surface of the limb, a light detector spaced apart from the light source and sensitive to intensity levels of the light reflected from the limb and a processing unit for processing the intensity signals received from the light detector for producing output signals. The device may determine the level of the blood constituent and may also use this level for monitoring and/or to activate an alarm when the level falls outside a predetermined range. | 01-15-2009 |
20090018422 | VITAL SIGN MONITOR FOR CUFFLESSLY MEASURING BLOOD PRESSURE USING A PULSE TRANSIT TIME CORRECTED FOR VASCULAR INDEX - A method and apparatus for measuring a patient's blood pressure featuring the following steps: 1) measuring a time-dependent optical waveform with an optical sensor; 2) measuring a time-dependent electrical signal with an electrical sensor; 3) estimating the patient's arterial properties using the optical waveform; 4) determining a pulse transit time (PTT) from the time-dependent electrical signal and the time-dependent optical waveform; and 5) calculating a blood pressure value using a mathematical model that includes the PTT and the patient's arterial properties. | 01-15-2009 |
20090024013 | Physical Performance Monitoring and Monitors - Methods and systems are disclosed for determining an anaerobic threshold and/or an oxygen consumption rate in a human or animal subject. The methods include exposing a tissue of the subject to illumination radiation, collecting emitted radiation from the tissue, the emitted radiation including a portion of the illumination radiation reflected or transmitted from the tissue, processing the emitted radiation to form a spectrum of the tissue, and determining, based on the spectrum of the tissue, the anaerobic threshold and/or the oxygen consumption rate of the subject. | 01-22-2009 |
20090024014 | Method and Apparatus for Measuring Pulse Rate and Oxygen Saturation Achieved During Exercise - In order to measure a pulse rate and an oxygen saturation of a subject who is in an exercised state, each of two pulse wave signals obtained from the subject is separated into a signal component and a noise component. A frequency spectrum of the signal component and a frequency spectrum of the noise component are obtained. It is judged whether a body motion of the subject is occurred based on the frequency spectrum of the signal component and the frequency spectrum of the noise component. A pulsation frequency is determined based on the judgment as to the body motion. The pulse rate is calculated based on the pulsation frequency. The oxygen saturation is calculated based on a ratio of spectra of the two pulse wave signals corresponding to the pulsation frequency. | 01-22-2009 |
20090054751 | Touchless Sensor for Physiological Monitor Device - A device for monitoring heart rate and blood oxygen levels using improved pulse oximetry sensors. Pulse oximetry sensors function in either transmission mode or reflectance mode. The device of the present invention provides improved sensors functioning in transmission mode to be useful on anatomical structures with dense tissue, such as the wrist. Additionally, a combination of sensors are used to enhance the performance of monitoring devices using pulse oximetry technology. By combining sensors that function in transmission mode and reflectance mode, quality and accuracy of the monitoring device is enhanced. The data from the sensors are communicated with a microcontroller for analyzing the data. More accurate data collection translates to more accurate analysis using formulas or algorithms. The resulting analysis is conveyed to the user through a display, either digitally or in color. | 02-26-2009 |
20090054752 | METHOD AND APPARATUS FOR PHOTOPLETHYSMOGRAPHIC SENSING - A photoplethysmographic sensing system for determining a user's pulse rate includes a light emitting device ( | 02-26-2009 |
20090082651 | Selection of ensemble averaging weights for a pulse oximeter based on signal quality metrics - A method and a system for ensemble averaging signals in a pulse oximeter, including receiving first and second electromagnetic radiation signals from a blood perfused tissue portion corresponding to two different wavelengths of light, obtaining an assessment of the signal quality of the electromagnetic signals, selecting weights for an ensemble averager using the assessment of signal quality, and ensemble averaging the electromagnetic signals using the ensemble averager. | 03-26-2009 |
20090137885 | PULSE OXIMETER ACCESS APPARATUS AND METHOD - Access is provided to certain pulse oximetry systems utilizing a keyed sensor and a corresponding locked sensor port of a restricted access monitor. In such systems, the keyed sensor has a key comprising a memory element, and the monitor has a memory reader associated with the sensor port. The monitor is configured to function only when the key is in communications with the locked sensor port, and the memory reader is able to retrieve predetermined data from the memory element. The monitor is accessed by providing the key separate from the keyed sensor, integrating the key into an adapter cable, and connecting the adapter cable between the sensor port and an unkeyed sensor so that the monitor functions with the unkeyed sensor. | 05-28-2009 |
20090143656 | SYSTEM FOR DETERMINATION OF BRAIN COMPLIANCE AND ASSOCIATED METHODS - Systems and methods for measuring intracranial pressure and brain compliance are provided. In one aspect, for example, a method for noninvasive measurement of brain compliance in a subject may include calculating a phase shift between an intracranial pulsatile perfusion flow measured from the subject and an extracranial pulsatile perfusion flow measured from the subject, and determining brain compliance of the subject from the phase shift between the intracranial pulsatile perfusion flow and an extracranial pulsatile perfusion flow. Though various methods of calculating phase shift are contemplated, in one aspect such a calculation may include calculating an intracranial frequency waveform corresponding to the intracranial pulsatile perfusion flow, calculating an extracranial frequency waveform corresponding to the extracranial pulsatile perfusion flow, and calculating a phase difference between the intracranial frequency waveform and the extracranial frequency waveform. | 06-04-2009 |
20090171172 | METHOD AND SYSTEM FOR PULSE GATING - The present disclosure relates to the acquisition and use of an arterial pulse signal that may be used to synchronize the measurement of other physiological characteristics. In one embodiment, a sensor is provided that emits light toward a pulsing artery and detects the transmitted light to generate a signal representative of the amount of light detected. In another embodiment, a sensor is provided that acquires physiological data from a first emitter and first detector placed proximate to a perfused tissue site and acquires arterial pulse data from a second emitter and second detector placed proximate to an artery. Embodiments related to systems, tangible media, and methods of operation are also provided. | 07-02-2009 |
20090171173 | SYSTEM AND METHOD FOR REDUCING MOTION ARTIFACTS IN A SENSOR - Embodiments disclosed herein may include a patient sensor which has a low-friction exterior coating. In an embodiment, the exterior surface of the sensor may come into contact with external items, such as, for example, bed linens, clothing, unintended parts of the patient's body, or other people. The low-friction coating disposed on the exterior of the sensor may include a material having a relatively low coefficient of friction with respect to these external items. In an embodiment, the low-friction material may include, for example, a fluoropolymer, a polypropylene, or a polyethylene. Additionally, in an embodiment, an internal surface of the sensor that is in contact with the patient may have a relatively high-friction coating, such as an adhesive. In an embodiment, a stack of adhesive layers may be disposed on the internal surface around one or more light emitting and/or detecting optics. | 07-02-2009 |
20090171174 | SYSTEM AND METHOD FOR MAINTAINING BATTERY LIFE - Embodiments of the present disclosure relate to a patient monitoring system and method. Embodiments may include a patient monitoring device with a battery, one or more charge drawing components, and an operator interface. The operator interface may provide an option to place the patient monitor in a storage mode in which the one or more charge-drawing components draw no or substantially no charge from the battery. | 07-02-2009 |
20090171175 | Personalized Medical Monitoring: Auto-Configuration Using Patient Record Information - According to various embodiments, methods and systems are provided for configuring a medical device connected to a network based on an identification. In one embodiment, a method is provided that includes receiving an identification, retrieving configuration parameters from a network based at least in part upon the identification, and selecting one or more configuration parameters based at least in part upon the identification. In various embodiments, a system is provided that includes a medical device configured to communicate over a network, wherein the medical device may receive information from the network and the monitor is configured to select one or more configuration parameters based at least in part upon the information received from the network. | 07-02-2009 |
20090171176 | Snapshot Sensor - According to embodiments, there is provided a non-invasive medical device and method for using the same. Specifically, there is provided a pulse oximetry system that includes a sensor configured to detect electromagnetic radiation which has passed through living tissue and a monitor coupled to the sensor for processing information collected by the sensor. An actuation device is provided that is remotely located from the monitor and communicatively coupled to the monitor, wherein the monitor is configured to take a snapshot of physiological parameters and relay the physiological parameters to an electronic medical record (EMR) in response to receiving an actuation signal from the actuation device. | 07-02-2009 |
20090209836 | Optical Measuring Apparatus, Optical Measuring Method, and Storage Medium that Stores Optical Measuring Program - The present invention provides an optical measuring apparatus and an optical measuring method for being able to correct the influence of a superficial tissue to be able to accurately measure a degree of light absorption of a deep layer tissue such as a human body and fruits, and a storage medium that stores an optical measuring program. The optical measuring apparatus includes a probe, and the probe includes one light emitting diode and two photodiodes. In a configuration of the optical measuring apparatus, one of the photodiodes receives light which is emitted from the light emitting diode and transmitted through a superficial layer and a deep layer of a tissue, and the other photodiode receives light having a deep layer transmission distance different from that of the light received by one of the photodiodes. The light received by the other photodiode is also transmitted through the superficial layer and deep layer of the tissue. Based on intensity of the light received by each photodiode, a control unit computes a propagation constant in a medium through which the light propagates. An arithmetic expression is selected in accordance with an input fat thickness of the tissue, and an absorption coefficient of the light from a muscle tissue using the arithmetic expression based on the fat thickness and a spatial slope. A hemoglobin concentration and an oxygen saturation are obtained based on the obtained absorption coefficient of the light. | 08-20-2009 |
20090221887 | PATIENT MONITORING ALARM ESCALATION SYSTEM AND METHOD - Embodiments of the present invention relate to a patient monitoring alarm escalation system and method. Specifically, embodiments of the present invention include an alarm detection device configured to measure physiological data received via a patient monitor, the alarm detection device configured to initiate an alarm in response to predefined measurements of the physiological data, and an alarm device configured to emit a first signal with a first property and a second signal with a second property, the first signal being emitted when the alarm is initiated, the second signal being emitted if an alarm acknowledgement mechanism is not activated prior to a designated event. | 09-03-2009 |
20090221888 | WEARABLE SENSOR SYSTEM FOR ENVIRONMENTAL AND PHYSIOLOGICAL INFORMATION MONITORING AND INFORMATION FEEDBACK SYSTEM - An ear wearable or head wearable environmental information and physiological information monitoring device is introduced. This system is capable of transmitting and receiving information wirelessly. This system also comprises of a wireless display unit that can be attached to a hand band. | 09-03-2009 |
20090221889 | Pulse Oximeter With Alternate Heart-Rate Determination - A pulse oximeter which determines multiple heart rates, and selects between them based on the metrics of only one of the heart rate calculations. A primary heart rate calculation method is selected, and is used unless its metrics indicate questionable accuracy, in which case an alternative rate calculation is available and is used instead. | 09-03-2009 |
20090240126 | Method And System For Classification of Photo-Plethysmographically Detected Respiratory Effort - Embodiments disclosed herein may include systems and methods for determining a patient's respiratory effort and blood oxygen saturation based on data acquired from a pulse oximetry sensor and analyzing the parameters in conjunction with each other. For example, the respiratory effort may be determined based on a photo-plethysmographic waveform generated from light attenuation detected by the sensor, and the blood oxygen saturation may be a pulse-based estimate of arterial blood oxygen saturation determined from the detected attenuation. Analysis of the parameters may enable detection and classification of apnea (e.g., obstructive or central) or another underlying cause for respiratory instability. Furthermore, the measured respiratory effort may be compared to respiratory effort supplied by a ventilator to ensure proper sensor placement before enabling automatic adjustment of ventilator settings. | 09-24-2009 |
20090247851 | Graphical User Interface For Monitor Alarm Management - The present disclosure provides a system and method for facilitating user input of alarm settings for a patient monitor. In various embodiments, a pulse oximetry monitor may include a graphical user interface (GUI) which is capable of displaying a graph of blood oxygen saturation percentage over time. The system may be capable of allowing a user to enter an alarm threshold value and/or an alarm integration threshold value. The alarm threshold value may be displayed as a line on the graph, and the alarm integration threshold value may be displayed as a shaded area on the graph. The GUI may include an indicator of where an alarm would be initiated given the graph, the input alarm threshold value, and/or the alarm integration threshold value. The disclosed GUI may provide the user with a clear illustration of how the alarm threshold value and alarm integration threshold value may affect the alarm. | 10-01-2009 |
20090247852 | SYSTEM AND METHOD FOR FACILITATING SENSOR AND MONITOR COMMUNICATION - Embodiments disclosed herein may include an adapter which is capable of converting signals from an oximeter sensor such that the signals are readable by an oximeter monitor. In an embodiment, the adapter is capable of converting signals relating to calibration information from the oximeter sensor. The calibration information may relate to wavelengths of light emitting diodes within the oximeter sensor. In a specific embodiment, the adapter will convert wavelength calibration information in a first form relating to data values stored in a digital memory chip to a second form relating to a resistance value of an expected resistor within the oximeter sensor. | 10-01-2009 |
20090264721 | SIGNAL PROCESSING METHOD, SIGNAL PROCESSING APPARATUS, AND PULSE PHOTOMETER USING THE SAME - A method of processing first and second signals obtained by measuring a medium, to obtain a pulse wave signal and an artifact signal which are separated, includes: separating vectors of the first and second signals by using a separation matrix into a vector of the pulse wave signal and a vector of the artifact signal, the separation matrix including a norm ratio of a stable zone of the pulse wave signal and a compensated norm ratio of an artifact zone. | 10-22-2009 |
20090264722 | SYSTEM AND METHOD FOR NON-INVASIVELY MONITORING CONDITIONS OF A OBJECT - A method and system are presented for use in determining one or more parameters of a subject. A region of interest of the subject is irradiated with acoustic tagging radiation, which comprises at least one acoustic tagging beam. At least a portion of the region of interest is irradiated with at least one electromagnetic beam of a predetermined frequency range. Electromagnetic radiation response of the at least portion of the region of interest is detected and measured data indicative thereof is generated. The detected response comprises electromagnetic radiation tagged by the acoustic radiation. This enables processing of the measured data indicative of the detected electromagnetic radiation response to determine at least one parameter of the subject in a region corresponding to the locations in the medium at which the electromagnetic radiation has been tagged by the acoustic radiation, and outputting data indicative of the at least one determined parameter. | 10-22-2009 |
20090287070 | Estimation Of A Physiological Parameter Using A Neural Network - A neural network is used to combine one or more estimates of a physiologic parameter with one or more associated signal quality metrics, creating a more accurate estimate of said physiologic parameter, as well as a second estimate of the accuracy of said physiologic parameter estimate. | 11-19-2009 |
20090306488 | PORTABLE PATIENT MONITOR - Embodiments of the present disclosure includes a portable pulse oximeter, such as a handheld pulse oximeter, that provides a user with intuitive key navigation for device operation, which reduces an amount of visual concentration needed to handle and operate the oximeter. In various embodiments, the portable pulse oximeter includes one or more of user input keys disposed along curve, an alignment edge providing guidance by feel of a user's digits to the input keys, raised convex keys also providing navigation by feel, a protective boot disposed around various portions of the oximeter housing to protect against impacts, a table-top stand, combinations of the same, or the like. | 12-10-2009 |
20090306489 | APPARATUS AND METHOD FOR MEASURING A CHARACTERISTIC OF A COMPOSITION REACTIVE TO A MAGNETIC FIELD - A system that incorporates teachings of the present disclosure may include, for example, a sensor having a pulse oximeter sensor to measure an oxygen saturation level in a liquid, a magnetic source coupled to the pulse oximeter sensor, and a controller to control the pulse oximeter sensor and the magnetic source, and to measure a mechanical effect on the liquid responsive to the magnetic source applying a magnetic field to the liquid. Additional embodiments are disclosed. | 12-10-2009 |
20090326350 | TISSUE PERFUSION SENSOR CONTROL - An optical perfusion sensor may monitor blood oxygen saturation of blood-perfused tissue, which may be referred to as tissue perfusion, until a tissue perfusion value is within a threshold range of a reference value, and, in some examples, for at least a minimum period of time. The tissue perfusion value may indicate an absolute blood oxygen saturation level or a relative change in blood oxygen saturation level. The reference value may be, for example, determined by an oxygen (O2) variation index that indicates a change in blood oxygen saturation of tissue. In some examples, the optical perfusion sensor may be activated upon detecting a cardiac event, such as a cardiac arrhythmia. In addition, in some examples, cardiac signal monitoring may be activated upon detecting a threshold change in tissue perfusion. | 12-31-2009 |
20090326351 | Signal Processing Mirroring Technique - Embodiments may include systems and methods capable of processing an original signal by selecting and mirroring portions of the signal to create a new signal for further analysis. In an embodiment, the signal may be a photoplethysmograph (PPG) signal and the new signal may be further analyzed using continuous wavelet transforms. Any suitable number of reconstructed new signals may be created from the original signal and scalograms may be derived at least in part from the new signals. Ridges may be extracted from the scalograms of the new signals and secondary scalograms may be further derived from the ridges. A sum along amplitudes technique may be applied to a selected scalogram and may be plotted as a function of the scale of the scalogram. Desired information, such as respiration information within the original signal, may be identified from the plot. | 12-31-2009 |
20090326352 | METHOD AND DEVICE FOR MEASURING PARAMETERS OF CARDIAC FUNCTION - A device for non-invasively measuring at least one parameter of a cardiac blood vessel in a patient is provided. The device comprises at least one light source that emits light in the 400 nm to 1000 nm wavelength range; at least one photodetector adapted to receive light emitted by the light source and generate an output based on the received light, wherein said light is reflected from or transmitted through tissue of the patient, the output of said photodetector being correlated with a parameter of the blood vessel; and at least one probe for facilitating delivery of light from the light source to an external tissue site on the patient in the proximity of the cardiac blood vessel and receipt of light by the photodetector. A system and methods of monitoring/measuring cardiac parameters utilizing the device and/or system are also provided. | 12-31-2009 |
20100016692 | SYSTEMS AND METHODS FOR COMPUTING A PHYSIOLOGICAL PARAMETER USING CONTINUOUS WAVELET TRANSFORMS - According to embodiments, systems and methods for computing a physiological parameter are provided. The physiological parameter may be calculated using a continuous wavelet transform technique as well as using a non-continuous wavelet transform technique. More than one value for the physiological parameter may be calculated using various techniques. The values may be evaluated to select a desired value, or an average or weighted average of the values may be computed to generate a desired value. | 01-21-2010 |
20100016693 | Systems And Methods For Identifying Pulse Rates - According to embodiments, techniques for using continuous wavelet transforms and spectral transforms to identify pulse rates from a photoplethysmographic (PPG) signal are disclosed. According to embodiments, candidate pulse rates of the PPG signal may be identified from a wavelet transformed PPG signal and a spectral transformed PPG signal. A pulse rate may be determined from the candidate pulse rates by selecting one of the candidate pulse rates or by combining the candidate pulse rates. According to embodiments, a spectral transform of a PPG signal may be performed to identify a frequency region associated with a pulse rate of the PPG signal. A continuous wavelet transform of the PPG signal at a scale corresponding to the identified frequency region may be performed to determine a pulse rate from the wavelet transformed signal. | 01-21-2010 |
20100016694 | Systems, Methods, and/or Apparatuses for Non-Invasive Monitoring of Respiratory Parameters in Sleep Disordered Breathing - In certain example embodiments, an air delivery system includes a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment and a pulse oximeter. In certain example embodiments, the pulse oximeter is configured to determine, for example, a measure of patient effort during a treatment period and provide a patient effort signal for input to control operation of the flow generator. Oximeter plethysmogram data may be used, for example, to determine estimated breath phase; sleep structure information; autonomic improvement in response to therapy; information relating to relative breathing effort, breathing frequency, and/or breathing phase; vasoconstrictive response, etc. Such data may be useful in diagnostic systems. | 01-21-2010 |
20100056886 | VITAL SIGN MONITOR SYSTEM AND METHOD - A portable vital sign monitor is provided which has a palm vital sign monitor unit carried by the patient, the unit comprising an optical probe positioned in the palm of the patient which measures at least one vital sign including SpO | 03-04-2010 |
20100056887 | EMISSION SENSOR DEVICE AND BIOINFORMATION DETECTING METHOD - An emission sensor device includes a base ( | 03-04-2010 |
20100081899 | System and Method for Photon Density Wave Pulse Oximetry and Pulse Hemometry - Present embodiments are directed to a system and method capable of modulating light at a modulation frequency, wherein the modulation frequency is somewhere above about 50 MHz and below about 3 GHz, to generate photon density waves in a medium, detecting relative amplitude changes and phase shifts in the photon density waves, and detecting and graphically indicating a physiologic value related to scattering particles in the medium based on the phase shifts. | 04-01-2010 |
20100081900 | Medical Sensor - The present disclosure generally relates to a medical sensor configured to attach to a patient's finger. According to embodiments, a sensor body is attached to a ring such that the sensor body is limited to contact with the patient's finger. The ring may have a fixed diameter or be adjustable. The ring may also include an indicator that facilitates the determination of whether the ring applies appropriate tension to the patient's finger. The sensor body may comprise a strip attached to the ring at two points or a hood that covers the distal end of the patient's finger. The sensor body may be coupled to the patient's finger with adhesives or securing flaps. | 04-01-2010 |
20100081901 | Medical Sensor And Technique For Using The Same - According to embodiments, sensors and systems for medical spectroscopy may include adaptive optical components, such as digital light processing components. Adaptive light emitting elements may allow such sensors to alter the intensity profile of emitted light photons to change the distribution of photons through the tissue or to scan areas of tissue to determine if certain areas may be associated with improved measurements. In addition, sensors with adaptive light detecting elements as provided may adapt to selectively detect light of certain wavelengths or from certain regions of the tissue. | 04-01-2010 |
20100081902 | Medical Sensor and Technique for Using the Same - According to embodiments, a medical sensor may be configured for use on mucosal tissue. Such a sensor may include a portion that facilitate the application of the sensor to the tissue and a portion that includes the optical components of the sensor. The two portions of the sensor may be reversibly coupled to one another. In embodiments, such sensors may be used to determine patient hematocrit. | 04-01-2010 |
20100113904 | System And Method For Facilitating Observation Of Monitored Physiologic Data - Present embodiments are directed to a system and method capable of detecting and graphically indicating physiologic patterns in patient data. For example, present embodiments may include a monitoring system that includes a monitor capable of receiving input relating to patient physiological parameters and providing indications or alarms related to oxygen saturation declines and oxygen desaturation patterns associated with sleep apnea. Present embodiments may include methods and systems for mediating between alarms and other indicators associated with oxygen desaturation and ventilatory instability. | 05-06-2010 |
20100113905 | Ultrasound Image Display With Additional Information Using PPG and ECG Signals - An embodiment for displaying an ultrasound image with additional information using a photoplenthysmography (PPG) signal and an electrocardiogram (ECG) signal in an ultrasound system is disclosed. The ultrasound system includes a photoplenthysmography (PPG) signal generating unit and an electrocardiogram (ECG) signal generating unit. The PPF signal generating unit and the ECG signal generating unit generate a PPG signal for the target object and an ECG signal for the target object, respectively. An additional information forming unit forms additional information by using the PPG signal and the ECG signal. A display unit displays ultrasound images of the target object together with the additional information. | 05-06-2010 |
20100145170 | Small Animal Pulse Oximeter User Interface - A user interface for a pulse oximetry device that calculates physiologic parameters of a subject including at least a subject's heart rate and S | 06-10-2010 |
20100145171 | APPARATUS FOR MEASURING MOTION NOISE ROBUST PULSE WAVE AND METHOD THEREOF - Provided are a method of measuring the pulse wave at the back of a wrist, etc. where measurement of the pulse wave is difficult so as to prevent a user to feel inconvenience in a mobile environment and a method of detecting the pulse wave at a write portion or at the back of the wrist which has comparatively weak restraint force in a human body by recovering an original signal with comparatively minimum errors so as to be robust to motion noise according to motion of the wrist. | 06-10-2010 |
20100160753 | WRIST BLOOD PRESSURE MONITOR WITH AN OXIMETER - A wrist blood pressure monitor with an oximeter, characterized in that the wrist blood pressure monitor and the oximeter are arranged on the same base; the length direction of the wrist blood pressure monitor is parallel to the width direction of an armband; and a finger hole of the oximeter is oriented to be vertical to the width direction of the armband. The wrist blood pressure monitor with the oximeter according to the present invention can measure the blood pressure and the blood oxygen at the same time, so that the user can not only operate conveniently, but also acquire more accurate measuring results; or the blood pressure and the blood oxygen are measured independently, so that the user can operate in great convenience. | 06-24-2010 |
20100185068 | NON-CONTACT PHOTOPLETHYSMOGRAPHIC PULSE MEASUREMENT DEVICE AND OXYGEN SATURATION AND BLOOD PRESSURE MEASUREMENT DEVICES USING THE SAME - The present invention provides a non-contact photoplethysmographic (PPG) pulse measurement device, and oxygen saturation and blood pressure measurement devices using the PPG pulse measurement device. The PPG pulse measurement device includes a sensing unit including at least two light emitting units for emitting light into a human body without making direct contact with skin, and a light receiving unit for sensing reflected light. A signal separation unit separates output of the sensing unit into a ripple component and a ripple-free component. A microprocessor unit monitors the ripple-free component and compares the ripple-free component with a DC signal value. A luminance adjustment unit adjusts luminance of the light emitting units. A filter and amplification unit eliminates noise from the ripple component. An A/D conversion unit converts output of the filter and amplification unit into a digital signal. A signal transmission unit transmits output of the A/D conversion unit. | 07-22-2010 |
20100222658 | SYSTEM AND METHOD FOR NON-INVASIVE MONITORING OF CEREBRAL TISSUE HEMODYNAMICS - A method and system are provided which are useful for the non-invasive determination and monitoring of cerebral tissue oxygenation. The method comprises the steps of generating at least first and second jugular venous output signals against time based on the reflection of at least first and second wavelengths of light, respectively, from an external tissue site on the patient in the proximity of the internal jugular vein; obtaining corresponding first and second cardiac arterial output signals for the first and second wavelengths of light, respectively, from the patient, and separating the first and second cardiac arterial output signals from the first and second jugular venous output signals, respectively, to generate first and second cerebral venous output signals; and determining cerebral tissue oxygenation based on the first and second cerebral venous output signals. A system useful to monitor cerebral tissue oxygenation may comprise a first module for optically generating at least first and second jugular venous output signals against time at at least first and second wavelengths of light, respectively, from the patient; a second module for generating first and second cardiac arterial output signals at the first and second wavelengths of light, respectively, from the patient; and a signal processing means adapted to separate the first and second cardiac arterial output signals from the first and second jugular venous output signals, respectively, to yield first and second cerebral venous output signals, for the determination of cerebral tissue oxygenation. | 09-02-2010 |
20100234705 | System and Method for Automatic Detection of a Plurality of SP02 Time Series Pattern Types - The disclosed embodiments relate to a patient monitor for evaluating a patient. The patient monitor may comprise a sensor that is adapted to detect a sound associated with breathing of the patient and to produce a first output indicative of the sound, an oximeter that is adapted to receive an input from the patient and to produce a second output indicative of oxygen saturation of blood of the patient, and a processor adapted to receive at least the first output and the second output and to correlate the first output with the second output. | 09-16-2010 |
20100240972 | Slider Spot Check Pulse Oximeter - A slider spot check pulse oximeter may include a first portion and a second portion. The first portion may include a sensor configured to monitor physiological parameters of a patient. The second portion may include a display configured to display the monitored physiological parameters. The second portion may be configured to slide relative to the first portion such that the second portion substantially exposes the sensor when in an open position and substantially covers the sensor when in a closed position. | 09-23-2010 |
20100249552 | System And Method For Wirelessly Powering Medical Devices - A system and method for the wirelessly charging of a power source of a pulse oximeter. The pulse oximeter may include an inductively coupled conductor. The inductively coupled conductor may be coupled to the power source and the inductively coupled conductor may wirelessly receive an electromagnetic charging signal. Based on the received signal, the inductively coupled conductor may at least partially recharge the power source. | 09-30-2010 |
20100249553 | Electroadhesive Medical Devices - A method and system for attaching medical devices to a patient are provided. In accordance with an embodiment, a medical device is formed with or is coupled to an attachment structure including a plurality of electrodes capable of generating differential voltages at adjacent electrodes, to thereby provide electrostatic adhesion with the tissue of a patient. In an embodiment, the attachment structure includes an insulative material between the respective electrodes of the plurality of electrodes. | 09-30-2010 |
20100249554 | MEDICAL SENSOR WITH COMPRESSIBLE LIGHT BARRIER AND TECHNIQUE FOR USING THE SAME - According to various embodiments, a medical sensor assembly may include compressible light barriers configured to prevent undesired light from being detected. The compressible light barriers may protrude from the surface of the sensor. However, when applied to the tissue, the compressible light barriers may be compressed to the point of being substantially flush with the tissue. | 09-30-2010 |
20100249555 | SYSTEMS AND METHODS FOR MONITORING PAIN MANAGEMENT - The present disclosure relates to systems and methods for monitoring pain management using measurements of physiological parameters based on a PPG signal. A reference physiological parameter may be compared against a later measurement to identify a change in condition that may indicate a pain management problem. | 09-30-2010 |
20100249556 | SYSTEMS AND METHODS FOR MONITORING PAIN MANAGEMENT - The present disclosure relates to systems and methods for monitoring pain management using measurements of physiological parameters based on a PPG signal. A reference physiological parameter may be compared against a later measurement to identify a change in condition that may indicate a pain management problem. | 09-30-2010 |
20100261986 | MOTION COMPATIBLE SENSOR FOR NON-INVASIVE OPTICAL BLOOD ANALYSIS - A non-invasive optical sensor which uses the motion signal to calculate the physiological characteristic being measured. For pulse oximetry, a least squares or a ratio-of-ratios technique can be applied to the motion signal itself. This is made possible by selecting a site on the patient where variations in motion produce signals of two wavelengths which are sufficiently correlated. In particular, it has been determined that a sensor placed on a nail, in particular a thumbnail, exhibits the characteristics of having the red and infrared signals correlated when used for pulse oximetry, and the resulting signals correlate to arterial oxygen saturation. | 10-14-2010 |
20100292548 | Method And Apparatus For Detecting And Analyzing Variations In A Physiologic Parameter - The present disclosure is generally directed to identifying and/or analyzing high resolution variations in a measured physiologic parameter, such as blood oxygen saturation (SpO | 11-18-2010 |
20100292549 | METHOD AND SYSTEM FOR MONITORING OXYGENATION LEVELS OF COMPARTMENTS AND TISSUE - A method and system for continually monitoring oxygenation levels in real-time in compartments of an animal limb, such as in a human leg or a human thigh or a forearm, can be used to assist in the diagnosis of a compartment syndrome. The method and system can include one or more near infrared compartment sensors in which each sensor can be provided with a compartment alignment mechanism and a central scan depth marker so that each sensor may be precisely positioned over a compartment of a living organism. The method and system may comprise hardware or software (or both) may adjust one or more algorithms based on whether tissue being monitored was traumatized or is healthy. The method and system can also monitor the relationship between blood pressure and oxygenation levels and activate alarms based on predetermined conditions relating to the oxygenation levels or blood pressure or both. | 11-18-2010 |
20100298676 | Estimating Transform Values Using Signal Estimates - According to embodiments, estimated values for a signal transform may be generated using estimated values for the signal. Signal parameters may then be determined based on the estimated signal transform. A first portion of a signal may be obtained. A second portion of the signal may be estimated. The second portion of the signal may correspond to a portion of the that is unknown, that is not yet available and/or that is obscured by noise and/or artifacts. A transform (e.g., a continuous wavelet transform) of both of the signal portions may be performed. One or more parameters corresponding to the signal may then be determined from transformed signal. | 11-25-2010 |
20100298677 | WIRELESS RING-TYPE PHYSICAL DETECTOR - A wireless ring-type physical detector includes a ring, a sensor unit, an amplifier unit, a demultiplexer unit, a processor unit and a wireless transmission unit. The sensor unit uses a light signal to detect the blood oxygen saturation, the heartbeat and continuous blood pressure. The detected light signal is processed by each unit to get a physical parameter which is valuable for a clinic test. | 11-25-2010 |
20100305418 | MULTIUSE OPTICAL SENSOR - One or more electromagnetic radiation sources, such as a light emitting diode, may emit electromagnetic waves into a volume of space. When an object enters the volume of space, the electromagnetic waves may reflect off the object and strike one or more position sensitive detectors after passing through an imaging optical system such as glass, plastic lens, or a pinhole located at known distances from the sources. Mixed signal electronics may process detected signals at the position sensitive detectors to calculate position information as well as total reflected light intensity, which may be used in medical and other applications. A transparent barrier may separate the sources and detectors from the objects entering the volume of space and reflecting emitted waves. Methods and devices are provided. | 12-02-2010 |
20100317945 | CUFF FOR DETERMINING A PHYSIOLOGICAL PARAMETER - The invention relates to a cuff ( | 12-16-2010 |
20100317946 | Shock Reduction Using Absolute Calibrated Tissue Oxygen Saturation and Total Hemoglobin Volume Fraction - An implantable medical device for detecting and treating an arrhythmia includes an optical sensor adapted for positioning adjacent to a blood-perfused tissue volume. In one embodiment for controlling arrhythmia therapies delivered by the device, the optical sensor is controlled to emit light in response to detecting an arrhythmia, detect light scattered by the volume of blood perfused tissue including measuring an optical sensor output signal corresponding to the intensity of scattered light for at least four spaced-apart wavelengths, and compute a volume-independent measure of tissue oxygen saturation from the detected light. The hemodynamic status of the arrhythmia is detected in response to the measure of tissue oxygen saturation. | 12-16-2010 |
20100317947 | Tissue Oxygenation Monitoring in Heart Failure - A medical device system and associated method control the delivery of a therapy to a patient. The system includes an activity sensor and detects a change in activity level of the patient. The system further include an optical sensor to sense signal corresponding to tissue light attenuation. The system computes a tissue oxygenation measurement in response to detecting a change in activity level. A parameter controlling delivery of the therapy is adjusted in response to detecting the decreased tissue oxygenation. | 12-16-2010 |
20100324385 | BODY-WORN PULSE OXIMETER - The invention provides a body-worn system that continuously measures pulse oximetry and blood pressure, along with motion, posture, and activity level, from an ambulatory patient. The system features an oximetry probe that comfortably clips to the base of the patient's thumb, thereby freeing up their fingers for conventional activities in a hospital, such as reading and eating. The probe secures to the thumb and measures time-dependent signals corresponding to LEDs operating near 660 and 905 nm. Analog versions of these signals pass through a low-profile cable to a wrist-worn transceiver that encloses a processing unit. Also within the wrist-worn transceiver is an accelerometer, a wireless system that sends information through a network to a remote receiver, e.g. a computer located in a central nursing station. | 12-23-2010 |
20100324386 | BODY-WORN PULSE OXIMETER - The invention provides a body-worn system that continuously measures pulse oximetry and blood pressure, along with motion, posture, and activity level, from an ambulatory patient. The system features an oximetry probe that comfortably clips to the base of the patient's thumb, thereby freeing up their fingers for conventional activities in a hospital, such as reading and eating. The probe secures to the thumb and measures time-dependent signals corresponding to LEDs operating near 660 and 905 nm. Analog versions of these signals pass through a low-profile cable to a wrist-worn transceiver that encloses a processing unit. Also within the wrist-worn transceiver is an accelerometer, a wireless system that sends information through a network to a remote receiver, e.g. a computer located in a central nursing station. | 12-23-2010 |
20100324387 | BODY-WORN PULSE OXIMETER - The invention provides a body-worn system that continuously measures pulse oximetry and blood pressure, along with motion, posture, and activity level, from an ambulatory patient. The system features an oximetry probe that comfortably clips to the base of the patient's thumb, thereby freeing up their fingers for conventional activities in a hospital, such as reading and eating. The probe secures to the thumb and measures time-dependent signals corresponding to LEDs operating near 660 and 905 nm. Analog versions of these signals pass through a low-profile cable to a wrist-worn transceiver that encloses a processing unit. Also within the wrist-worn transceiver is an accelerometer, a wireless system that sends information through a network to a remote receiver, e.g. a computer located in a central nursing station. | 12-23-2010 |
20100324388 | BODY-WORN PULSE OXIMETER - The invention provides a body-worn system that continuously measures pulse oximetry and blood pressure, along with motion, posture, and activity level, from an ambulatory patient. The system features an oximetry probe that comfortably clips to the base of the patient's thumb, thereby freeing up their fingers for conventional activities in a hospital, such as reading and eating. The probe secures to the thumb and measures time-dependent signals corresponding to LEDs operating near 660 and 905 nm. Analog versions of these signals pass through a low-profile cable to a wrist-worn transceiver that encloses a processing unit. Also within the wrist-worn transceiver is an accelerometer, a wireless system that sends information through a network to a remote receiver, e.g. a computer located in a central nursing station. | 12-23-2010 |
20100324389 | BODY-WORN PULSE OXIMETER - The invention provides a body-worn system that continuously measures pulse oximetry and blood pressure, along with motion, posture, and activity level, from an ambulatory patient. The system features an oximetry probe that comfortably clips to the base of the patient's thumb, thereby freeing up their fingers for conventional activities in a hospital, such as reading and eating. The probe secures to the thumb and measures time-dependent signals corresponding to LEDs operating near 660 and 905 nm. Analog versions of these signals pass through a low-profile cable to a wrist-worn transceiver that encloses a processing unit. Also within the wrist-worn transceiver is an accelerometer, a wireless system that sends information through a network to a remote receiver, e.g. a computer located in a central nursing station. | 12-23-2010 |
20100324390 | MEASUREMENT OF OXYGEN SATURATION OF BLOOD HAEMOGLOBIN - The invention provides a chest-based oximeter ( | 12-23-2010 |
20100331640 | USE OF PHOTODETECTOR ARRAY TO IMPROVE EFFICIENCY AND ACCURACY OF AN OPTICAL MEDICAL SENSOR - A system and method for determining physiological parameters of a patient based on light transmitted through the patient. The light may be transmitted via an emitter and received by a detector array that includes a plurality of detector elements. The emitter and the detector may both be located on a flexible substrate. | 12-30-2010 |
20110009722 | Historical Trend Icons For Physiological Parameters - Embodiments relate to systems and methods for displaying graphical icons representing a detected medical condition or a sensor fault. Specifically, embodiments of relate to a monitoring system that includes a sensor configured to obtain a physiologic signal from a patient, and a monitor communicatively coupled to the sensor and configured to receive the signal. In an embodiment, the monitor includes a processor adapted to compute physiological data based on the signal and identify a pattern in the physiological data, wherein the pattern relates to a condition of the patient, the sensor, or the monitor. In an embodiment, the processor also selects a graphical icon indicative of the pattern and provides the selected icon to a display. | 01-13-2011 |
20110009723 | FOREHEAD SENSOR PLACEMENT - Forehead oximetry sensor devices and methods for determining physiological parameters using forehead oximetry sensors. One method includes placing an oximetry sensor on the forehead of a patient, such that the sensor is placed on the lower forehead region, above the eyebrow with the sensor optics placed lateral of the iris and proximal the temple; and operating the pulse oximeter to obtain the physiological parameter. In one aspect, the method also includes providing and placing a headband over the oximetry sensor, or alternately, the sensor is a headband-integrated sensor. The headband has an elastic segment sized to fit around the patient's head. The headband also includes a non-elastic segment that is smaller than and attached with the elastic segment. The non-elastic segment is sized to span a portion of the elastic segment when the elastic segment is stretched. In addition, the non-elastic segment is larger than the portion of the elastic segment it spans when the elastic segment is not stretched. When the headband or the headband-integrated sensor is sufficiently tight, it delivers a pressure in the range higher than the venous pressure and lower than the capillary pressure to the forehead of the patient. | 01-13-2011 |
20110015507 | SYSTEM AND METHOD FOR MEMORY SWITCHING FOR MULTIPLE CONFIGURATION MEDICAL SENSOR - A system is provided that includes a monitor, a multiple configuration sensor having a first configuration and a second configuration, and a sensor connector. The sensor connector includes a first memory device and a second memory device, such that the first memory device is accessible by the monitor in the first sensor configuration and the second memory device is accessible by the monitor in the second sensor configuration. Another system is provided that includes a sensor adaptor having a processing circuit that reads a memory of a multiple configuration sensor and provides a first set of calibration data of a first sensor configuration and a second set of calibration data for a second sensor configuration. | 01-20-2011 |
20110028813 | Systems And Methods For Estimating Values Of A Continuous Wavelet Transform - According to embodiments, techniques for estimating scalogram energy values in a wedge region of a scalogram are disclosed. A pulse oximetry system including a sensor or probe may be used to receive a photoplethysmograph (PPG) signal from a patient or subject. A scalogram, corresponding to the obtained PPG signal, may be determined. In an arrangement, energy values in the wedge region of the scalogram may be estimated by calculating a set of estimation locations in the wedge region and estimating scalogram energy values at each location. In an arrangement, scalogram energy values may be estimated based on an estimation scheme and by combining scalogram values in a vicinity region. In an arrangement, the vicinity region may include energy values in a resolved region of the scalogram and previously estimated energy values in the wedge region of the scalogram. In an arrangement, one or more signal parameters may be determined based on the resolved and estimated values of the scalogram. | 02-03-2011 |
20110028814 | Medical Monitoring Patch Device And Methods - Embodiments described herein may include systems and methods for monitoring physiological parameters of a patient. Specifically, embodiments disclose the use of a generally self-contained pulse oximeter that is small and lightweight, such that it may be comfortably affixed to a patient to provide physiological data pertaining to the patient. Embodiments also provide methods of using and manufacturing a pulse oximetry patch. | 02-03-2011 |
20110034789 | DIGITAL SWITCHING IN MULTI-SITE SENSOR - A system includes a flexible sensor configured to be placed into a first configuration and a second configuration, wherein the sensor is configured to measure a physiological characteristic. The sensor may include a first memory device configured to store a first set of calibration data and a second memory device configured to store a second set of calibration data. The system may further include a monitor coupled to the sensor, wherein the first memory device is accessible by the monitor in the first configuration and the second memory device is accessible by the monitor in the second configuration. | 02-10-2011 |
20110054280 | Finger Type Pulse and Blood Oxygen Measuring Device - The invention discloses a finger type pulse and blood oxygen measuring device, including an upper shell suite and a lower shell suite that are installed with silica gel soft finger pad, and a semi-closed holding cavity shaped by the coordination of the silica gel soft finger pad that installed within the upper shell suite and lower shell suite; herein its feature it is that the foresaid silica gel soft finger pad that installed within the upper shell suite and lower shell suite has optical windows which are corresponding to each other, while the optical window and silica gel soft finger pad become integrated; and a removable power supply module is installed in the lower shell suite. The beneficial effects of the invention is that because of the adoption of the removable type power supply module which is able to load the battery, by the comparison with the current technology, it is easier to assemble and disassemble the battery, and it enforces the anti-damage function of the measuring device; the device also adopts the integrated technology for the mould of the transparent silica gel optical window and the silica gel soft finger pad, which makes the craft simpler, and enhances the consistency of the products, and also increases the comfort of the fingers for placement in measuring. | 03-03-2011 |
20110060201 | Integrated Pulse Oximeter-Pulse Flowmeter - This device uses electrical impedance and signal processing to measure the small change in volume (“Pulse Volume”) of a limb-segment that occurs with each heartbeat. “Pulsatile Flow” is defined as the pulse volume multiplied by the heart rate and is an index of tissue perfusion. This information can be combined with measured blood oxygen saturation to determine how much oxygen is reaching the tissues. The combination of knowing oxygen saturation and tissue perfusion is far more useful than knowing just one or the other of these parameters. | 03-10-2011 |
20110066016 | OPAQUE, ELECTRICALLY NONCONDUCTIVE REGION ON A MEDICAL SENSOR - A medical sensor may be adapted to prevent unwanted light and electrical interference from corrupting physiological measurements. Sensors are provided with features that reduce the amount of outside light or shunted light that impinge the detecting elements of the sensor. The sensor is adapted to reduce crosstalk between electrical signals, increasing the accuracy of measurements. The sensor is also adapted to reduce the effect of outside light or shunted light on pulse oximetry measurements. | 03-17-2011 |
20110071373 | Time-Division Multiplexing In A Multi-Wavelength Photon Density Wave System - Multi-wavelength photon density wave medical systems, methods, and devices are provided. In one embodiment, a multi-wavelength system may include a sensor, a sensor cable, and a patient monitor. The sensor may have an emitter output and a detector input configured to pass a multi-wavelength photon density wave input signal into a patient and receive a resulting multi-wavelength photon density wave output signal. The sensor cable may couple to the sensor using two optical cables for transmitting and receiving the multi-wavelength photon density wave signals. The patient monitor may couple to the sensor cable and generate several time-division multiplexed single-wavelength input signals by modulating one or more light sources at a frequency sufficient to produce resolvable photon density waves. By combining the several time-division multiplexed single-wavelength input signals into one of the optical cables of the sensor cable, the patient monitor may generate the multi-wavelength photon density wave input signal. | 03-24-2011 |
20110071374 | Minimax Filtering For Pulse Oximetry - Methods and systems are provided for filtering a pulse oximetry signal without making assumptions on the noise statistics of the signal. A pulse oximeter may receive an energy signal proportional to an amount of light detected at the sensor. The energy signal may be converted and digitally processed to estimate physiological data. The pulse oximeter may include a processor configured to execute H | 03-24-2011 |
20110071375 | METHOD AND APPARATUS FOR ESTIMATING PHYSIOLOGICAL PARAMETERS USING MODEL-BASED ADAPTIVE FILTERING - A method and apparatus for reducing the effects of noise on a system for measuring physiological parameters, such as, for example, a pulse oximeter. The method and apparatus of the invention take into account the physical limitations on various physiological parameters being monitored when weighting and averaging a series of measurements. Varying weights are assigned different measurements, measurements are rejected, and the averaging period is adjusted according to the reliability of the measurements. Similarly, calculated values derived from analyzing the measurements are also assigned varying weights and averaged over adjustable periods. More specifically, a general class of filters such as, for example, Kalman filters, is employed in processing the measurements and calculated values. The filters use mathematical models which describe how the physiological parameters change in time, and how these parameters relate to measurement in a noisy environment. The filters adaptively modify a set of averaging weights to optimally estimate the physiological parameters. | 03-24-2011 |
20110077483 | SENSOR WITH AN OPTICAL COUPLING MATERIAL TO IMPROVE PLETHYSMOGRAPHIC MEASUREMENTS AND METHOD OF USING THE SAME - According to various embodiments, a medical sensor assembly may include an optical coupling material configured to prevent undesired light from being detected and to enhance the amount of light received at the detector. The optical coupling material may be a gel, liquid, oil, or other non-solid material with appropriate optical properties. | 03-31-2011 |
20110077484 | Systems And Methods For Identifying Non-Corrupted Signal Segments For Use In Determining Physiological Parameters - According to embodiments, non-corrupted signal segments are detected by a data modeling processor implementing an artificial neural network. The neural network may be trained to detect artifact in the signal (e.g., a PPG signal or some wavelet representation of a PPG signal) and gate valid signal segments for use in determining physiological parameters, such as, for example, pulse rate, oxygen saturation, pulse rate, respiration rate, and respiratory effort. When an artifact is detected, previously received known-good signal segments may be buffered and replace the signal segment or segments containing artifact. A regression analysis may also be performed in order to extrapolate new data from previously received known-good signal segments. In this way, more accurate and reliable physiological parameters may be determined. | 03-31-2011 |
20110077485 | Method Of Analyzing Photon Density Waves In A Medical Monitor - A monitoring system that may include an emission feature capable of emitting light into tissue, a modulator capable of modulating the emitter at a modulation frequency generally in a range of about 50 MHz to 3.0 GHz to generate resolvable photon density waves, a detection feature capable of detecting photons of the photon density waves after passage through the tissue and capable of providing a distribution of detected photons over a time period for the photon density waves, and a processor capable of calculating a skewness of the distribution and making determinations relating to a value of a physiologic parameter of the tissue based at least in part on the skewness of the distribution. | 03-31-2011 |
20110077486 | SYSTEMS AND METHODS FOR NORMALIZING A PLETHYSMOGRAPH SIGNAL FOR IMPROVED FEATURE ANALYSIS - The present disclosure relates to systems and methods for analyzing and normalizing signals, such as PPG signals, for use in patent monitoring. The PPG signal may be detected using a continuous non-invasive blood pressure monitoring system and the normalized signals may be used to determine whether a recalibration of the system should be performed. | 03-31-2011 |
20110077487 | Evaluation Kit For Medical Monitoring Module System and Method - An evaluation kit for monitoring, testing, and debugging a medical monitoring module is provided. The kit includes a hardware and software to provide for monitoring of communication between the medical monitoring module and a host or host simulator. The kit may provide for various system configurations having a sensor device, a computer having a protocol analyzer and a host simulator, a medical monitoring module, a software host, a medical monitor, or any combination thereof. | 03-31-2011 |
20110077488 | Evaluation Board For A Medical Monitoring Module System And Method - An evaluation board for a medical monitoring module is provided. The evaluation board includes a socket configured to receive a medical monitoring module and a plurality of connections for connection to a host or host simulator and a second device. The evaluation board may include a non-isolated power supply to provide power to the medical monitoring module. The evaluation board may also provide communication in a protocol between the host or host simulator and the medical monitoring module. | 03-31-2011 |
20110082355 | PHOTOPLETHYSMOGRAPHY DEVICE AND METHOD - A system and method for measuring one or more light-absorption related blood analyte concentration parameters of a mammalian subject, is disclosed. In some embodiments, the system comprises: a) a photoplethysmography (PPG) device configured to effect a PPG measurement by illuminating skin of the subject with at least two distinct wavelengths of light and determining relative absorbance at each of the wavelengths; b) a dynamic light scattering measurement (DLS) device configured to effect a DLS measurement of the subject to rheologically measure a pulse parameter of the subject; and c) electronic circuitry configured to: i) temporally correlating the results of the PPG and DLS measurements; and ii) accordance with the temporal correlation between the PPG and DLS measurements, assessing value(s) of the one or more light-absorption related blood analyte concentration parameter(s). | 04-07-2011 |
20110098545 | METHOD FOR USING PHOTOPLETHYSMOGRAPHY TO OPTIMIZE FLUID REMOVAL DURING RENAL REPLACEMENT THERAPY BY HEMODIALYSIS OR HEMOFILTRATION - Disclosed herein are methods, systems and devices to monitor vascular volume status during renal replacement therapy utilizing at least one oximetry/photoplethysmography sensor. The methods, systems and devices provide an alternative to conventional vascular volume monitoring methods during renal replacement therapy while enabling reliable, non-invasive, and automatic monitoring of vascular volume to avert patient hypotension. The methods, systems and devices may be employed in the context of both inpatient and outpatient dialysis facilities and may also be incorporated into conventional hemodialysis and hemofiltration techniques and equipment. | 04-28-2011 |
20110112387 | SIMULTANEOUS MEASUREMENT OF PULSE AND REGIONAL BLOOD OXYGEN SATURATION - Methods and systems are provided that allow for the simultaneous calculation of pulse and regional blood oxygen saturation. An oximeter system that includes a sensor with a plurality of emitters and detectors may be used to calculate a pulse and/or regional blood oxygen saturation. A plurality of light signals may be emitted from light emitters. A first light signal may be received at a first light detector and a second light signal may be received at a second light detector. A pulse and/or regional blood oxygen saturation value may be calculated based on the received first and/or second light signals. The pulse and regional blood oxygen saturation values may be calculated substantially simultaneously. The calculated pulse and regional blood oxygen saturation values as well as other blood oxygen saturation values may be displayed simultaneously in a preconfigured portion of a display. | 05-12-2011 |
20110118574 | PHYSIOLOGICAL SIGNAL SENSING DEVICE - A physiological signal sensing device for examination of human is provided. The physiological signal sensing device includes a light emitting fiber and a light receiving fiber. The light emitting fiber includes a plurality of light emitting portions, wherein the light emitting fiber provides a plurality of sensing beams, and the sensing beams are respectively emitted through the light emitting portions. The light receiving fiber includes a plurality of light receiving portions. The light receiving fiber corresponds to the light emitting fiber. The sensing beams are emitted through the light emitting portions, reflected or refracted by the human. And then the sensing beams are received by the light receiving portions. | 05-19-2011 |
20110124991 | SYSTEM AND METHOD FOR MITIGATING INTERFERENCE IN PULSE OXIMETRY - A pulse oximetry sensor adapted to emit light from an emitter proximate to a patient's tissue and detect a portion of the emitted light on a detector proximate to the tissue. The pulse oximetry system is adapted to acquire position data for the emitter and for the detector with one or more position indicators. The pulse oximetry system is adapted to process the position data to obtain a change in position of the emitter and the detector; and to process pulse oximetry measurements using the change in position to obtain a motion-corrected pulse oximetry data. | 05-26-2011 |
20110130638 | MEDICAL SENSOR AND TECHNIQUE FOR USING THE SAME - A medical sensor may be adapted to account for factors that cause irregularities in pulse oximetry measurements or other spectrophotemetric measurements. Sensors are provided with surface features that reduce the amount of outside light or shunted light that impinge the detecting elements of the sensor. The sensor is adapted to reduce the effect of outside light or shunted light on pulse oximetry measurements. | 06-02-2011 |
20110144460 | PULSE FREQUENCY MEASURING METHOD AND APPARATUS - A method and an apparatus are provided for measuring a pulse frequency in a bio-signal measurement device. A bio-signal collected by a sensor is applied as an input signal of a notch filter. A filter coefficient of the notch filter is adaptively changed according to a result of tracking the bio-signal in the notch filter and calculating a pulse frequency corresponding to the filter coefficient of the notch filter. | 06-16-2011 |
20110144461 | PULSE FREQUENCY MEASURING METHOD AND APPARATUS - A method and an apparatus are provided for measuring a pulse frequency in a bio-signal measurement device. A bio-signal collected by a sensor is applied as an input signal of a notch filter. A filter coefficient of the notch filter is adaptively changed according to a result of tracking the bio-signal in the notch filter and calculating a pulse frequency corresponding to the filter coefficient of the notch filter. | 06-16-2011 |
20110152650 | ADAPTIVE PUMP CONTROL DURING NON-INVASIVE BLOOD PRESSURE MEASUREMENT - A method of operating a non-invasive blood pressure (NIBP) monitor having a blood pressure cuff. During operation of the NIBP monitor, the blood pressure cuff is initially inflated at a rapid inflation rate. Once the blood pressure cuff reaches a first pressure, the inflation rate of the blood pressure cuff is reduced from the rapid inflation rate to a measurement inflation rate. The blood pressure cuff continues to inflate at the measurement inflation rate while the NIBP monitor receives signals from the patient. Based upon the signals received from the patient, the controller of the NIBP monitor calculates an initial inflation pressure. The blood pressure cuff is inflated to the calculated initial inflation pressure and inflation is terminated. In this manner, signals received from the patient during inflation are used to calculate the initial inflation pressure to reduce the amount of time required to make a blood pressure measurement. | 06-23-2011 |
20110152651 | Device And System That Identifies Cardiovascular Insufficiency - A system and method for identifying volume status of a patient are disclosed. A pulse density signal is recorded from the patient. The pulse density signal is filtered to capture a respiration sampling period and a plurality of cardiac cycles occurring during the respiration sampling period. Mean pulse pressure and peak blood flow velocity for the respiration sampling period are calculated and are used as indices of volume status of the patient. | 06-23-2011 |
20110152652 | SYSTEM AND METHOD FOR PULSE RATE CALCULATION USING A SCHEME FOR ALTERNATE WEIGHTING - Embodiments of the present invention relate to a method for analyzing pulse data. In one embodiment, the method comprises receiving a signal containing data representing a plurality of pulses, the signal generated in response to detecting light scattered from blood perfused tissue. Further, one embodiment includes performing a pulse identification or qualification algorithm on at least a portion of the data, the pulse identification or qualification algorithm comprising at least one constant, and modifying the at least one constant based on results obtained from performing the pulse identification or qualification algorithm, wherein the results indicate that a designated number of rejected pulses has been reached. | 06-23-2011 |
20110218413 | Method and Apparatus for Non-invasive Fetal Oximetry - Method and apparatus to non-invasively measure fetal blood oxygen saturation levels. Optical sensors capable of producing and detecting multiple wavelengths of tissue penetrating light are placed on the surface of the maternal abdomen, and the light beams directed to pass through at least a portion of the uterus containing the fetus. The fetal heart rate is monitored by Doppler ultrasound, and pure maternal optical signal related to maternal arterial blood flow are also measured. The optical sensors collect composite signals containing both maternal and fetal hemoglobin absorption spectral data and modulated by their respective pulsatile blood flows. The composite signals processed in the time domain and frequency domain, the pure maternal pulsatile optical signal used to extract the maternal contribution to the composite signal, and the fetal pulsatile signal is used to lock onto and extract the fetal contribution to the composite signal, and a fetal blood oxygen level deduced. | 09-08-2011 |
20110237913 | METHOD AND APPARATUS FOR DETERMINING AT LEAST ONE EVALUATION PARAMETER OF A BLOOD SAMPLE - The present invention provides a method for determining at least one evaluation parameter of a blood sample, comprising the following steps: providing (S | 09-29-2011 |
20110245640 | Films For Touchscreen Displays Of Medical Device Monitors - According to various embodiments, a medical device monitor includes a touchscreen and a film disposed on an external surface of the touchscreen. The film resists formation of visible fingerprints and resists growth of microorganisms. In various embodiments, one layer or more than one layer of the film may be disposed on the touchscreen. | 10-06-2011 |
20110245641 | Monitor With Multi-Position Base - According to various embodiments, a medical monitoring device includes a monitor component and a base component. The base component has one or more connectors on a facing of the base component. The monitor component is capable of rotating with respect to the base component. In various embodiments, the monitor component may be above the base component. | 10-06-2011 |
20110245642 | ELECTRONIC ENDOSCOPE SYSTEM - An electronic endoscope system includes a light source device, an electronic endoscope for sequentially illuminating a subject tissue containing a blood vessel inside a body cavity with the light, and sequentially outputting image data of wavelength bands of the subject tissue corresponding to the different wavelength bands of received reflected light, a calculator for calculating a blood vessel characteristics amount in a subject tissue from the image data, a calculator for calculating an oxygen saturation level in the blood vessel from the image data, an image producer for producing a reference image of the subject tissue from the image data, an extractor for extracting a region of interest from the reference image, a producer for producing an enhanced image, and a display for displaying the enhanced image. | 10-06-2011 |
20110270058 | Method For Respiration Rate And Blood Pressure Alarm Management - Embodiments of the present disclosure relate to display features that facilitate observation of monitored physiological data. According to certain embodiments, a monitoring system may include a monitor capable of receiving data related to the physiological parameters and storing data related to the parameters. The monitor may include a microprocessor capable of determining a respiration rate baseline from the data and establishing an alarm sensitivity for respiration rate based on the respiration rate baseline. The alarm sensitivity may comprise a first tier, a second tier, and a third tier. Each tier may correspond to a specific respiratory rate range and the alarm sensitivity may be selected based on which specific respiratory rate range encompasses the respiration rate baseline. Further, in certain embodiments a blood pressure baseline may be determined and an alarm sensitivity established based on the blood pressure baseline. | 11-03-2011 |
20110270059 | SIGNAL PROCESSING FOR PULSE OXIMETRY - A signal processing technique for estimating the frequency of a pulsatile signal (including but not limited to pulse oximetry signals) is disclosed. Each of the functions contained within a pre-selected set of functions is compared to the input signal at many different time-shifts, and the function/time-shift combination that best matches the input signal is selected. The frequency of the best-matching function is then used as the best estimate of the frequency of the input signal. Optionally, once a function has been selected, the rising portion of the selected function can be correlated in time to the rising portion of the input signal. Improved results can then be obtained by basing the oxygen saturation level calculations on samples taken from the rising portion of the input signal. | 11-03-2011 |
20110275915 | Arm and wrist cuffs and pulse oximeter clip with conductive material for electrodes on small medical home monitors - This invention is an improvement to medical devices used for home and remote monitoring. The improvements include a coated fabric electrode used for arm and wristbands and for pulse oximeter clips. The electrode is comprised of the hook portion of hook and loop material that is coated with material made from a noble metal such as silver. | 11-10-2011 |
20110282169 | Long Term Active Learning from Large Continually Changing Data Sets - Methods and systems are disclosed for autonomously building a predictive model of outcomes. A most-predictive set of signals S | 11-17-2011 |
20110301443 | ELECTRONIC ENDOSCOPE SYSTEM, PROCESSOR FOR ELECTRONIC ENDOSCOPE, AND TARGET TRACING METHOD - In a tracing mode of an electronic endoscope system, a target designating frame is displayed on a monitor to enable designating a tracing target in an endoscopic image captured from an interior of a body cavity illuminated with a broadband light. After the tracing target is designated, narrowband rays of different wavelength ranges from each other are sequentially projected into the body cavity, to acquire biological information on the designated tracing target from image signals obtained under these narrowband rays. On the basis of the biological information on the tracing target, an area corresponding to the tracing target is detected from endoscopic images newly captured after the designation of the tracing target. | 12-08-2011 |
20110313263 | METHODA AND DEVICES FOR RELIEVING STRESS - Easy to use, cost-effective methods and devices for evaluating and treating stress and thereby disorders caused or exacerbated by stress are provided. More particularly methods and devices for identifying RSA waves during respiration which provide a subject with real-time RSA wave information are provided. These methods and devices also can be used to identify drop points in RSA waves. Such methods and devices provide subjects with the ability to maintain parasympathetic outflow and thereby prevent and/or reduce levels of stress. | 12-22-2011 |
20120016219 | PULSE OXIMETER - The present invention provides a pulse oximeter of the portable type, which is possible to carry around and to use widely regardless of the adult, the infant, the newborn baby, and which can keep the finger still for performing the precise measurement. The pulse oximeter | 01-19-2012 |
20120022349 | DIAGNOSIS OF ACUTE STROKES - A method of evaluating patients suspected of suffering from an acute stroke, the method comprising:
| 01-26-2012 |
20120022350 | SENSOR FUSION AND PROBABILISTIC PARAMETER ESTIMATION METHOD AND APPARATUS - A probabilistic digital signal processor using data from multiple instruments is described. Initial probability distribution functions are input to a dynamic state-space model, which operates on state and/or model probability distribution functions to generate a prior probability distribution function, which is input to a probabilistic updater. The probabilistic updater integrates sensor data from multiple instruments with the prior to generate a posterior probability distribution function passed (1) to a probabilistic sampler, which estimates one or more parameters using the posterior, which is output or re-sampled in an iterative algorithm or (2) iteratively to the dynamic state-space model. For example, the probabilistic processor operates on fused data using a physical model, where the data originates from a mechanical system or a medical meter or instrument, such as an electrocardiogram or pulse oximeter to generate new parameter information and/or enhanced parameter information. | 01-26-2012 |
20120029330 | Cable cross talk suppression - Systems, methods, and devices are provided for suppressing cross-talk noise due to capacitive and/or inductive coupling in a medical sensor signal. For example, an embodiment of a patient monitor may include driving circuitry, an amplifier, and transient current discharge circuitry. When the driving circuitry drives an emitter to emit light into a patient, a detector may detect a portion of the light that passes through the patient, generating a detector signal. Cross-talk between the emitter driving signals and the detector signal may generate interference in the form of a transient current in the detector signal. Before the amplifier receives the detector signal, transient current discharge circuitry may discharge the transient current. | 02-02-2012 |
20120035443 | MEDICAL SENSOR FOR REDUCING MOTION ARTIFACTS AND TECHNIQUE FOR USING THE SAME - A sensor for pulse oximetry or other applications utilizing spectrophotometry may be adapted to reduce motion artifacts by fixing the optical distance between an emitter and detector. A flexible sensor is provided with a stiffening member to hold the emitter and detector of the sensor in a relatively fixed position when applied to a patient. Further, an annular or partially annular sensor is adapted to hold an emitter and detector of the sensor in a relatively fixed position when applied to a patient. A clip-style sensor is provided with a spacer that controls the distance between the emitter and detector. | 02-09-2012 |
20120046532 | FOOT PULSE OXIMETER FOR SCREENING CONGENITAL HEART DISEASE BEFORE NEWBORN DISCHARGE - A method including placing a portion of a foot of a newborn in a device, the device including a light emitter and a corresponding receiver coupled on opposite sides of the device, the device further including a processor for processing data from the light emitter and receiver; and determining a presence of congenital heart disease. An apparatus including a body including a chamber of a size to accommodate a portion of a newborn's foot; at least one light emitter and a corresponding detector coupled on opposite sides of the body, the emitter configured to emit light of a prescribed wavelength into the chamber; and a processor coupled to the body and configured to receive a signal from the at least one detector. | 02-23-2012 |
20120095306 | SENSING GAS BUBBLES IN A LIVING BODY - A method of detecting gas bubbles in a living body, comprising transmitting at least one original electromagnetic signal to a body portion; detecting a signal modulated by a flow of blood in said body portion; and analyzing a perturbation in said signal to determine at least one of an existence and a property of a bubble in said blood flow. | 04-19-2012 |
20120101349 | PULSE OXIMETER - A pulse oximeter includes a housing defined by at least a first housing portion and a second housing portion wherein the second portion includes a passage. A sensor module disposed in the housing and proximate the passage includes at least one light emitting diode and at least one photodetector. A processing module also disposed in the housing and configured to communicate with the sensor module includes at least a processor, a network interface, and a power supply. The pulse oximeter further includes a pad having at least a bottom surface and a pad passage, as well as an adhesive configured to be disposed on at least a portion of the bottom surface of the pad. The housing is configured to releasably engage the pad wherein the housing passage and the pad passage are substantially aligned with one another. | 04-26-2012 |
20120101350 | Personal Health Monitoring Device - The present invention provides a system and method for monitoring personal health of the user. The method includes detecting a plurality of physiological parameters. The plurality of physiological parameters are collected and analyzed. Afterwards, the plurality of analyzed physiological parameters are transferred at pre defined time interval to at least one computing device for monitoring the personal health of the user. | 04-26-2012 |
20120108928 | System and Method for Measurement of Vital Signs of a Human - A method and system for optical measuring one or more vital signs of a human is described. The method includes generating an optical Pulse Width Modulated (PWM) signal modulated in accordance with a predetermined Pulse Width Modulation scheme. The PWM scheme includes one or more Pulse Width Modulations having different modulation frequencies. The method also includes applying the PWM optical signal to a measurement location in a blood perfused body tissue of the human and receiving light originated back from the measurement location. A photo current signal of a time response of the blood perfused body tissue to the PWM optical signal is indicative of the vital signs. The method includes generating a voltage signal from the photo current signal and processing the voltage signal for determining the vital signs. | 05-03-2012 |
20120116193 | System for Adjusting Power Employed by a Medical Device - A system for adjusting power employed by a medical device incorporating light emitting devices and being used for measuring patient medical parameters, includes a plurality of light emitting devices. A power unit is coupled to the light emitting devices and powers the light emitting devices responsive to respective control signals which determine power to be applied to the light emitting devices. A control unit for provides the control signals and is coupled to the power unit. The control signals intermittently turn off at least one of the plurality of light emitting devices in a power save mode in response to a determination that a patient medical parameter value measured by the medical device, using an active light emitting device of the plurality of light emitting devices, is at a safe level. | 05-10-2012 |
20120116194 | METHOD FOR AUTOMATIC SETTING TIME VARYING PARAMETER ALERT AND ALARM LIMITS - When monitoring physiological parameters (e.g., blood pressure, heart rate, etc.) of a patient, a threshold limit ( | 05-10-2012 |
20120130211 | Biological Signal Measuring Apparatus and Biological Signal Measuring Method - A biological signal measuring apparatus includes: a light emitter which emits at least two light beams having different wavelengths to living tissue of a subject; a light receiver which receives the light beams that are emitted from the light emitter, and which converts at least one of the light beams to at least one electric signal that corresponds to a reception light intensity of the at least one of the light beams; a detector which detects temporal variation of the reception light intensity from the electric signal; a selector which selects a pulse oximeter mode in which at least one of an oxygen saturation and a pulse rate is calculated and a capillary refilling time measurement mode in which a capillary refilling time is calculated; and a calculator which, based on the temporal variation of the reception light intensity, performs a calculation in the mode that is selected by the selector. | 05-24-2012 |
20120136226 | Pulse Oximetry For Determining Heart Rate Variability As A Measure Of Susceptibility To Stress - Embodiments of the present disclosure relate to systems and methods for determining a physiologic parameter of a patient. Specifically, embodiments provided herein include methods and systems for determining or predicting the presence and/or severity of stress in a patient based on heart rate variability. The information relating to stress may be used as part of a broader physiological assessment. | 05-31-2012 |
20120136227 | ORGANIC LIGHT EMITTING DIODES AND PHOTODETECTORS - A system and method for determining physiological parameters of a patient based on light transmitted through the patient. The light may be transmitted via a broadband light source and received by a detector. The light may be selectively detected at a detector. Based on material characteristic of the detector, specific wavelengths of light are detected by the detector for use in monitoring the physiological parameters of the patient. | 05-31-2012 |
20120136228 | METHOD OF INFORMING SENSOR MOUNTING TIME PERIOD AND APPARATUS FOR INFORMING SENSOR MOUNTING TIME PERIOD - The sensor mounting time period informing apparatus is provided with the detecting part, the timer part, the discriminating part, and the informing part. The detecting part detects whether or not the sensor is mounted on the living body for measuring biological information. The timer part counts the elapsed time period during which the sensor is continuously mounted on the living body based on the detection results of the detecting part. The discriminating part discriminates whether or not the elapsed time has reached the specified standard time. The informing part issues a notification when the elapsed time has reached the standard time based on the discrimination result of the discriminating part. | 05-31-2012 |
20120143026 | SYSTEM AND METHOD FOR PROBABILITY BASED DETERMINATION OF ESTIMATED OXYGEN SATURATION - Present embodiments include providing an initial estimate of a value representative of a blood flow characteristic at a current timestep, and determining a probability distribution of transition, wherein the probability distribution of transition includes potential values of the blood flow characteristic at the current timestep with associated probabilities of occurrence based solely on the initial estimate. Present embodiments further include obtaining an initial measurement of the blood flow characteristic, and determining a probability distribution of measured values, wherein the probability distribution of measured values includes potential values of the blood flow characteristic at the current timestep with associated probabilities of occurrence based on the initial measurement. Further, present embodiments include combining the probability of distribution of transition with the probability of distribution of measured values to determine a meaningful blood flow characteristic value, and posting the meaningful blood flow characteristic value. | 06-07-2012 |
20120150003 | System Non-invasive Cardiac Output Determination - A system determines cardiac output and stroke volume by using non-invasive oximetric signals, such as SPO2 data and waveform, to determine blood flow quantitatively. A non-invasive system determines cardiac output or stroke volume. The system includes an input processor for receiving signal data representing oxygen content of blood of a patient at a particular anatomical location. A computation processor uses the received signal data in calculating a heart stroke volume of the patient comprising volume of blood transferred through the blood vessel in a heart cycle, in response to, a blood volume derived in response to oxygen content of patient blood and at least one factor representing reduction in blood flow volume from a patient heart to the particular anatomical location. An output processor provides data representing the calculated heart stroke volume to a destination device. | 06-14-2012 |
20120157802 | ELECTROCARDIOGRAPHIC DATA ACQUISITION DEVICE - An ECG data acquisition device ( | 06-21-2012 |
20120172689 | WIRELESS, ULTRASONIC PERSONAL HEALTH MONITORING SYSTEM - A personal monitoring device has a sensor assembly configured to sense physiological signals upon contact with a user's skin. The sensor assembly produces electrical signals representing the sensed physiological signals. A converter assembly, integrated with, and electrically connected to the sensor assembly, converts the electrical signals generated by the sensor assembly to a frequency modulated inaudible ultrasonic sound signal. The ultrasonic signal is demodulated from an aliased signal produced by undersampling. | 07-05-2012 |
20120179011 | OPTICAL SENSORS FOR USE IN VITAL SIGN MONITORING - The invention provides a body-worn system that continuously measures pulse oximetry and blood pressure, along with motion, posture, and activity level, from an ambulatory patient. The system features an oximetry probe that comfortably clips to the base of the patient's thumb, thereby freeing up their fingers for conventional activities in a hospital, such as reading and eating. The probe secures to the thumb and measures time-dependent signals corresponding to LEDs operating near 660 and 905 nm. Analog versions of these signals pass through a low-profile cable to a wrist-worn transceiver that encloses a processing unit. Also within the wrist-worn transceiver is an accelerometer, a wireless system that sends information through a network to a remote receiver, e.g. a computer located in a central nursing station. | 07-12-2012 |
20120179012 | Data Analytics System - The invention includes a system and processes to gather and analyze data to monitor, track, and provide care. The major subsystems of the invention include the Medical Digital Assistant (“MDA”), Server, Monitoring Devices, Dispensing Devices, Server, Dashboard, and Application Software. The invention includes the method for conducting data acquisition, monitoring, analysis, and reporting to diagnose and treat medical conditions such as diagnosing and treating specific medical conditions such as fertility and congestive heart failure. | 07-12-2012 |
20120184831 | SYSTEMS, DEVICES AND METHODS FOR MONITORING HEMODYNAMICS - Systems, devices and methods for monitoring hemodynamics are described. The systems and methods generally involve directing light toward an area of the body and detecting the resulting scattered light. The scattered light is detected and an electrical signal representative of the scattered light intensity is generated from the detected light. The electrical signal is analyzed by measuring temporal fluctuations of such signals to monitor pathological states over time including hemorrhagic shock, hypoxia, and tissue graft vascularization. Such monitoring can have significant benefits to patients. | 07-19-2012 |
20120190948 | MONITORING DEVICE AND METHOD FOR ESTIMATING BLOOD CONSTITUENT CONCENTRATION FOR TISSUES WITH LOW PERFUSION - The present disclosure relates to a method for estimating blood constituent concentration of a user under low perfusion conditions using a spectrophotometry-based monitoring device; the method comprising: measuring a plurality of photoplethysmographic (PPG) signals; measuring a cardio-synchronous (CV) signal; detecting an instantaneous heart rate and determining a heart rate variability from the CV signal; selecting reliable projected PPG signals; estimating a value of said blood constituent concentration from the magnitude of said reliable projected PPG signals. The disclosed method requires diminished computational load compared to conventional methods based on frequency domain approach as FFT or DCT. The disclosure also pertains to a monitoring device for estimating blood constituent concentration in tissue under low perfusion of a user. | 07-26-2012 |
20120190949 | ALARM SYSTEM THAT PROCESSES BOTH MOTION AND VITAL SIGNS USING SPECIFIC HEURISTIC RULES AND THRESHOLDS - The invention provides a body-worn monitor that measures a patient's vital signs (e.g. blood pressure, SpO2, heart rate, respiratory rate, and temperature) while simultaneously characterizing their activity state (e.g. resting, walking, convulsing, falling). The body-worn monitor processes this information to minimize corruption of the vital signs by motion-related artifacts. A software framework generates alarms/alerts based on threshold values that are either preset or determined in real time. The framework additionally includes a series of ‘heuristic’ rules that take the patient's activity state and motion into account, and process the vital signs accordingly. These rules, for example, indicate that a walking patient is likely breathing and has a regular heart rate, even if their motion-corrupted vital signs suggest otherwise. | 07-26-2012 |
20120220843 | SIGNAL PROCESSING APPARATUS - The present invention involves a method and an apparatus for analyzing measured signals, including the determination of a measurement of oxygen saturation and respiration rate in the measured signals during a calculation of a physiological parameter of a monitored patient. Use of this invention is described in particular detail with respect to oximetry-based measurements but extends to other types of measurements. | 08-30-2012 |
20120232365 | CARDIOPULMONARY RESUSCITATION MONITORING APPARATUS - A cardiopulmonary resuscitation monitoring apparatus includes: a light source section configured to cause light, which includes at least infrared light, to be incident on a living body; a light receiving unit configured to receive at least one of transmitted light that is transmitted through the living body and reflected light that is reflected from the living body; a calculating unit, based on DC components of received light intensities of the received light, configured to calculate a ratio of the DC components of the received light intensities of the received light during execution of cardiopulmonary resuscitation; an evaluating unit configured to perform evaluation related to the cardiopulmonary resuscitation based on the ratio calculated by the calculating unit; and an outputting unit configured to perform an output in accordance with a result of the evaluation performed by the evaluating unit. | 09-13-2012 |
20120232366 | ALARM SUSPEND SYSTEM - An alarm suspend system utilizes an alarm trigger responsive to physiological parameters and corresponding limits on those parameters. The parameters are associated with both fast and slow treatment times corresponding to length of time it takes for a person to respond to medical treatment for out-of-limit parameter measurements. Audible and visual alarms respond to the alarm trigger. An alarm silence button is pressed to silence the audible alarm for a predetermined suspend time. The audible alarm is activated after the suspend time has lapsed. Longer suspend times are associated with slow treatment parameters and shorter suspend times are associated with fast treatment parameters. | 09-13-2012 |
20120238846 | VASCULAR OCCLUSION TEST APPARATUS, SYSTEMS, AND METHODS FOR ANALYZING TISSUE OXYGENATION - A vascular occlusion test apparatus, systems, and methods for analyzing tissue oxygen saturation levels in patients are disclosed. A system for analyzing data related to tissue oxygenation in a patient includes a blood pressure device, a tissue oxygen sensor, and a control module in communication with the blood pressure device and tissue oxygen sensor. The control module includes a processor that computes various tissue characteristics associated with tissue oxygenation, including ischemia slope and recovery slope. During a vascular occlusion test, the control module can be configured to control an inflatable cuff based on tissue oxygen measurements obtained from the tissue oxygen sensor. | 09-20-2012 |
20120238847 | PROBE - A probe includes: light emitting and receiving sections; an attachment band including a first surface facing the living tissue and a second surface opposite to the first surface, a part of the first surface in which one of a hook portion and a loop portion is provided, a part of the second surface in which the other is provided, the attachment band to be wrapped around the living tissue to engage the hook and loop portions with each other; and a compressible member attached to the first surface, being in contact with the living tissue when the attachment band is attached to the living tissue, the compressible member which is larger in width than the attachment band and ends of which extend beyond ends of the attachment band. | 09-20-2012 |
20120245442 | CARDIOPULMONARY RESUSCITATION MONITORING APPARATUS - A cardiopulmonary resuscitation monitoring apparatus includes: a detecting unit configured to obtain a detection signal of a timing of chest compression during execution of cardiopulmonary resuscitation; a pulse oximeter configured to detect a change of a blood volume at the timing of the chest compression based on the detection signal, and configured to obtain an oxygen saturation from the change of the blood volume; an evaluating unit configured to perform evaluation related to the cardiopulmonary resuscitation based on the oxygen saturation; and an outputting unit configured to perform an outputting operation in accordance with a result of the evaluation. | 09-27-2012 |
20120253153 | MULTIPLEXED PHOTODETECTOR ARRAY FOR OPTICAL MEDICAL SENSORS - The present disclosure relates generally to medical devices and, more particularly, to optical medical sensors used for sensing physiological characteristics of a patient. In one embodiment, a system includes a physiological sensor having a photodetector array with a plurality of photodetectors configured to receive light from patient tissue. The physiological sensor also includes a multiplexor configured select and output a signal from the photodetector array. The physiological sensor may also include a signal analyzer configured to determine the signal quality for each of the output signals of the photodetector array and select an output signal, based on the signal quality determination, for the calculation of a physiological parameter of the patient. In another embodiment, a system includes a pulse oximetry sensor having a multiplexed array of photodetectors configured to receive light from patient tissue. The system also includes a pulse oximetry monitor having a multiplexor driver to control the multiplexed array of photodetectors as well as a processor configured to control the multiplexor driver and receive the output signals from the array of photodetectors. The processor is also configured to determine the signal quality of each of the output signals from the array of photodetectors, select an output signal based on the signal quality determination, and use the selected signal to calculate a physiological parameter of a patient. | 10-04-2012 |
20120253154 | BIOMETRIC IDENTIFICATION SYSTEM USING PULSE WAVEFORM - A method and system for biometric identity confirmation is based on the pulse wave of a subject. During an initial enrollment mode, pulse wave data for a known subject are used to generate subject characterization data for the known subject. During a subsequent operational mode, pulse wave data for a test subject are analyzed using the subject characterization data to confirm whether the identity of the test subject matches the known subject. The subject characterization data can be a probability density in a phase space in which at least two quasi-periodic variables based on the pulse wave (e.g., blood pressure and volume time-series data) are correlated. | 10-04-2012 |
20120253155 | METHOD AND APPARATUS FOR DEMODULATING SIGNALS IN A PULSE OXIMETRY SYSTEM - A method and an apparatus measure blood oxygenation in a subject. A light source is activated to cause a first emission at a first wavelength and a second emission at a second wavelength. A detector detects a composite signal indicative of an attenuation of the first and second wavelengths by tissue of a patient. The composite signal is demodulated into a first intensity signal and a second intensity signal. Blood oxygenation in the subject is determined from the first and second intensity signals. | 10-04-2012 |
20120253156 | METHOD AND APPARATUS FOR PROCESSING PHOTOPLETHYMOGRAPH SIGNALS - The disclosure relates to the field a method of and apparatus for processing a photoplethysmograph signal to support the analysis of photoplethysmograph signals in clinical scenarios. A derivative of a photoplethysmograph signal acquired over a time period is calculated. The derivative of the acquired photoplethysmograph signal with respect to time is analyzed and displayed in an x-y diagram as a function of the acquired photoplethysmograph signal or vice versa. | 10-04-2012 |
20120259189 | CARDIOVASCULAR INDEX ESTIMATION METHODS - New algorithms to estimate cardiovascular indices by analysis of the arterial blood pressure (ABP) signal. The invention comprises recording and identification of cardiovascular descriptors (including ABP signal, diastolic pressure, systolic pressure, pulse pressure, and end systole), calculation of cardiovascular system parameters, and calculation of aortic blood flow, stroke volume, cardiac output, total peripheral resistance, and characteristic time constant. | 10-11-2012 |
20120259190 | DETECTION OF OXIMETRY SENSOR SITES BASED ON WAVEFORM CHARACTERISTICS - In accordance with an embodiment of the present technique, there is provided methods and systems for detecting the location of a sensor and determining calibration algorithms and/or coefficients for calculation of physiological parameters based on the detected location. An exemplary embodiment includes receiving a signal corresponding to absorption of at least one wavelength of light by a patient's tissue, generating a plethysmographic waveform from the signal, determining an identifying characteristic of the plethysmographic waveform, and determining a location of the sensor based on a comparison of the identifying characteristic with at least one defined criterion. | 10-11-2012 |
20120271130 | METHOD AND APPARATUS FOR DETERMINING AN OXYGEN DESATURATION EVENT - A method and apparatus for determining an index indicative of a subject's response to an oxygen desaturation condition is provided. The method includes the steps of: a) providing a NIRS tissue sensor, a pulse oximetry sensor, and a processor in communication with the NIRS tissue sensor and the pulse oximetry sensor; b) sensing the subject's tissue using the NIRS tissue sensor and producing first signals; c) sensing the subject's tissue using the pulse oximetry sensor and producing second signals; d) processing the first signals to determine a change in tissue oxygen saturation values, processing the second signals to determine a change in arterial oxygen saturation values; and e) determining the index indicative of the subject's response to the oxygen desaturation condition using the change in tissue oxygen saturation values and the change in arterial oxygen saturation values. | 10-25-2012 |
20120271131 | MUCOSAL SENSOR FOR THE ASSESSMENT OF TISSUE AND BLOOD CONSTITUENTS AND TECHNIQUE FOR USING THE SAME - A sensor for physiological constituent detection may be adapted to include a mucoadhesive. A sensor is provided that is appropriate for use on mucosal tissue. The mucoadhesive provides a mechanism for holding the sensor on the mucous membrane in order to measure physiological constituent levels in the tissue and blood. | 10-25-2012 |
20120277558 | Apparatus and Method for Orthogonalizing Signals Detecting Blood Oxygenation and Blood Volume - A filter for detecting changes in skin color. The filter includes a filter material capable of filtering a frequency range and configured to orthogonalize an overall red response and an overall blue response in response to a spectral power distribution of a given light condition. The overall red response is based on a first plurality of spectral responses for a first human perceived chromatic channel used primarily for detecting blood oxygenation in a human. The overall blue response is based on a second plurality of spectral responses for a second human perceived chromatic channel used primarily for detecting blood volume. | 11-01-2012 |
20120277559 | Apparatus for Measuring Blood Parameters - Apparatus for measuring blood parameters such as chromophore, for example haemoglobin, concentration and blood flow detects light scattered from tissue surface ( | 11-01-2012 |
20120277560 | MEDICAL SENSOR FOR REDUCING MOTION ARTIFACTS AND TECHNIQUE FOR USING THE SAME - A sensor may be adapted to reduce motion artifacts by damping the effects of outside forces and sensor motion. A sensor is provided with a motion damping structure adapted to reduce the effect of motion of a sensor emitter and/or detector. Further, a method of damping outside forces and sensor motion is also provided. | 11-01-2012 |
20120277561 | SYSTEM AND METHOD FOR DETECTION OF VENOUS PULSATION - In accordance with an embodiment of the present technique, there is provided methods and systems for detecting the presence of venous pulsation by adjusting the sensitivity of a detection algorithm based on a sensor characteristic and/or notifying a caregiver of the presence of venous pulsation by ceasing display of physiological parameters. An exemplary embodiment includes receiving one or more signals from a sensor, the one or more signals corresponding to absorption of light in a patient's tissue; calculating one or more physiological parameters of the patient based on the one or more signals; displaying the patient's physiological parameters; enabling detection of venous pulsation with variable sensitivity based on a location of the sensor; and suspending or terminating the display of the one or more of the patient's physiological parameters when venous pulsation is detected. | 11-01-2012 |
20120283534 | DUAL MODE TEMPERATURE TRANSDUCER WITH OXYGEN SATURATION SENSOR - Apparatus for detecting intracranial temperature and blood oxygenation includes a transducer having a working surface for placement against a patient's cranium. The transducer forms a microwave antenna having walls defining an aperture having a pair of opposite broader boundaries and a pair of opposite narrower boundaries at the working surface. The antenna is tuned to a frequency which produces a first output signal indicative of heat emanating from the cranium. An oxygen saturation sensor sharing that aperture includes a radiation emitter located at one of narrower boundaries which directs electromagnetic radiation across the aperture to a radiation detector at the other of the narrower boundaries and which produces a corresponding second output signal. A control unit includes a display and a processor for processing the signals to calculate an intracranial temperature and an oxygen saturation value for display by the control unit. | 11-08-2012 |
20120283535 | METHOD AND SYSTEM FOR PULSE MEASUREMENT - A method and system for determining a person's heart pulse rate in noisy environments is provided. The method of determining a person's heart pulse rate includes radiating first and second wavelengths of light towards a tissue, measuring and storing a first and second set of parameter values from the signals reflected back from the first and second wavelengths respectively. The first set of parameter values represents a first signal corresponding to a combination of the heart pulse rate and extraneous noise and the second set of parameter values represents a second signal mainly comprising extraneous noise. The heart pulse rate is obtained by deducting the second set of parameter values from the first set of parameter values. | 11-08-2012 |
20120283536 | Signal Procesing Systems and Methods Using Basis Functions and Wavelet Transforms - According to embodiments, systems and methods are provided that use continuous wavelet transforms and basis functions to provide an optimized system for the determination of physiological information. In an embodiment, the basis functions may be used to refine an area of interest in the signal in frequency or in time, and the continuous wavelet transform may be used to identify a maxima ridge in the scalogram at scales with characteristic frequencies proximal to the frequency or frequencies of interest. In another embodiment, a wavelet transform may be used to identify regions of a signal with the morphology of interest while basis functions may be used to focus on these regions to determine or filter information of interest. In yet another embodiment, basis functions and continuous wavelet transforms may be used concurrently and their results combined to form optimized information or a confidence metric for determined physiological information. | 11-08-2012 |
20120296183 | DEVICE CONFIGURATION FOR SUPPORTING A PATIENT OXYGENATION TEST - A method for performing a patient oxygenation test using one or more computing devices is provided. The patient oxygenation test comprises a plurality of instructions for implementing a workflow for determining an oxygenation status for a patient. An entry or selection is received of one or more physiological parameters for the patient to be monitored during the patient oxygenation test. An entry or selection is received of one or more thresholds for at least one of the physiological parameters to be monitored during the patient oxygenation test. A determination is made as to whether any of the physiological parameters exceed limits set by the one or more thresholds. One or more actions are taken when one or more of the physiological parameters exceed the limits set by the one or more thresholds. A summary and analysis are provided of the test results. | 11-22-2012 |
20120296184 | NONINVASIVE PHYSIOLOGICAL ANALYSIS USING EXCITATION-SENSOR MODULES AND RELATED DEVICES AND METHODS - Methods and apparatus for qualifying and quantifying excitation-dependent physiological information extracted from wearable sensors in the midst of interference from unwanted sources are provided. An organism is interrogated with at least one excitation energy, energy response signals from two or more distinct physiological regions are sensed, and these signals are processed to generate an extracted signal. The extracted signal is compared with a physiological model to qualify and/or quantify a physiological property. Additionally, important physiological information can be qualified and quantified by comparing the excitation wavelength-dependent response, measured via wearable sensors, with a physiological model. | 11-22-2012 |
20120302846 | METHOD AND MEASURING INSTRUMENT FOR MEASURING THE OXYGEN SATURATION IN THE BLOOD - The invention relates inter alia to a method for measuring the oxygen saturation of the blood flowing in a peripheral human or animal body part ( | 11-29-2012 |
20120310060 | METHOD OF ANALYZING PHOTON DENSITY WAVES IN A MEDICAL MONITOR - A monitoring system may include an emission feature capable of emitting light into tissue, a modulator capable of modulating the emitter at a modulation frequency, e.g., in a range of about 10 MHz to 3.0 GHz, to generate resolvable photon density waves, a detection feature capable of detecting photons of the photon density waves after passage through the tissue, and a processor capable of using phase and amplitude differences of the photon density wave signal relative to a reference to determine one or more physiological parameters. The phase and amplitude differences may be much lower frequency that the modulation rate. Accordingly, these differences may be masked by signal artifacts. Provided herein are signal conditioning techniques that may improve the signal to noise ratio of photon density wave signals and yield a more robust phase and amplitude signal. | 12-06-2012 |
20120310061 | NONINVASIVE OXIMETRY OPTICAL SENSOR INCLUDING DISPOSABLE AND REUSABLE ELEMENTS - A pulse oximetry sensor includes reusable and disposable elements. To assemble the sensor, members of the reusable element are mated with assembly mechanisms of the disposable element. The assembled sensor provides independent movement between the reusable and disposable elements. | 12-06-2012 |
20120323095 | METHOD FOR DETECTION OF ABERRANT TISSUE SPECTRA - A method is provided for determining contact of a sensor with a patient's tissue. The method comprises comparing the intensity of detected light at a first wavelength to a threshold, wherein the first wavelength is not used to determine a physiological characteristic of the patient, and determining if the sensor is in contact with the patient's tissue based on the comparison. In addition, a method is provided for determining the amount of light shunting during operation of the sensor. The method comprises comparing the intensity of detected light at a first wavelength to a threshold, wherein the first wavelength is not used to determine a physiological characteristic of the patient, and determining the amount of light shunting based on the comparison. | 12-20-2012 |
20120330117 | Hemodynamic Reserve Monitor and Hemodialysis Control - Tools and techniques for estimating a probability that a patient is bleeding or has sustained intravascular volume loss (e.g., due to hemodialysis or dehydration) and/or to estimate a patient's current hemodynamic reserve index, track the patient's hemodynamic reserve index over time, and/or predict a patient's hemodynamic reserve index in the future. Tools and techniques for estimating and/or predicting a patient's dehydration state. Tools and techniques for controlling a hemodialysis machine based on the patient's estimated and/or predicted hemodynamic reserve index. | 12-27-2012 |
20120330118 | CENTRALIZED HOSPITAL MONITORING SYSTEM FOR AUTOMATICALLY DETECTING UPPER AIRWAY INSTABILITY AND FOR PREVENTING AND ABORTING ADVERSE DRUG REACTIONS - A system and method for the automatic diagnosis of obstructive sleep apnea in a centralized hospital critical care monitoring system for the monitoring of a plurality of patients in at least one of a critical care, step down, and cardiac ward by telemetry. The system includes a central processor having a display, and a plurality of telemetry units for mounting with patients, each of the telemetry units has a plurality of sensors for connection with each patient, the telemetry unit is capable of the transmission of multiple signals derived from the sensors to the central processor, in one preferred embodiment the method comprising steps of programming the system to analyze the signals and to automatically identify the presence and severity of obstructive sleep apnea and to provide an indication of the identification. | 12-27-2012 |
20130006077 | METHOD FOR MEASURING BLOOD FLOW VELOCITY - A method for measuring blood flow velocity comprises: placing a first and second blood vessel signal detectors on a body of a person to be measured in such a manner that the first and second blood vessel signal detectors are located a predetermined distance from each other; amplifying blood signal detected by the first and second blood vessel signal detectors; using the first and second blood vessel signal analyzers to record the blood signal at a predetermined time interval; setting an interval of time from the moment a specific blood vessel signal appears in a record of the first blood vessel signal analyzer to the moment the specific blood vessel signal appears in a record of the second blood vessel signal analyzer to be a predetermined time period; and dividing a value of the predetermined distance by a value of the predetermined time period can get a blood flow velocity. | 01-03-2013 |
20130012792 | SYSTEMS AND METHODS FOR IDENTIFYING PULSE RATES - According to embodiments, techniques for using continuous wavelet transforms and spectral transforms to identify pulse rates from a photoplethysmographic (PPG) signal are disclosed. According to embodiments, candidate pulse rates of the PPG signal may be identified from a wavelet transformed PPG signal and a spectral transformed PPG signal. A pulse rate may be determined from the candidate pulse rates by selecting one of the candidate pulse rates or by combining the candidate pulse rates. According to embodiments, a spectral transform of a PPG signal may be performed to identify a frequency region associated with a pulse rate of the PPG signal. A continuous wavelet transform of the PPG signal at a scale corresponding to the identified frequency region may be performed to determine a pulse rate from the wavelet transformed signal. | 01-10-2013 |
20130018241 | CAPILLARY REFILL TIME DIAGNOSTIC APPARATUS AND METHODS - An apparatus for measuring capillary refill time has a measurement module containing at least two radiation sources and at least one detector configured to detect radiation from each source that interacts with and is received from a measurement region of a patient or subject. One radiation source may be characterized by a wavelength that is absorbed substantially equally by oxyhemoglobin and deoxyhemoglobin. The other radiation source may be substantially unaffected by the presence or absence of blood in the measurement region. The measurement module may be applied against a measurement region of a patient for a first time period, and the released from the measurement region for a second time period, and detected signals processed to quantitatively evaluate capillary refill time. | 01-17-2013 |
20130030267 | MULTI-PURPOSE SENSOR SYSTEM - Embodiments of the present disclosure relate to multi-purpose sensors for monitoring a plurality of physiological parameters. According to certain embodiments, the multi-purpose sensors may include optical elements for determining oxygen saturation and regional saturation. In additional embodiments, such sensor may include multiple electrodes that are configured for bispectral index monitoring. In particular embodiments, portions of the multi-purpose sensors may be removed and discarded when no longer needed. | 01-31-2013 |
20130035571 | MOBILE EMERGENCY RESPONSE SYSTEM - Disclosed embodiments include a the portable medical apparatus that comprises (a) a patient monitor comprising a plurality of wireless biomedical sensors including an electrocardiogram sensor, a non-invasive blood pressure sensor, and a pulse oximetry sensor; and (b) a communications module configured to wirelessly transmit jointly compressed signals. The communication module is configured to transmit signals as a block of coherent data. Additionally, the communication module includes fast-joint coding and decoding, transmission error correction, information exchange between different layers to optimize network throughput, and adapts the Quality of Service (QoS) guarantees for each type of traffic offered. | 02-07-2013 |
20130041240 | Methods and Systems for Discriminating Bands in Scalograms - The present disclosure is directed towards embodiments of systems and methods for discriminating (e.g., masking out) scale bands that are determined to be not of interest from a scalogram derived from a continuous wavelet transform of a signal. Techniques for determining whether a scale band is not of interest include, for example, determining whether a scale band's amplitude is being modulated by one or more other bands in the scalogram. Another technique involves determining whether a scale band is located between two other bands and has energy less than that of its neighboring bands. Another technique involves determining whether a scale band is located at about half the scale of another, more dominant (i.e., higher energy) band. | 02-14-2013 |
20130046158 | INTELLIGENT ALARMS - A patient in intensive care is monitored by connecting the outputs of a plurality of sensors to a computer, where the sensors all relate to one mode of functioning such as heart beating, respiration, infusion of a liquid into the patient, etc. The sensor outputs are delivered to a computer that sounds an alarm, only if all sensors that indicate one function (e.g. heart beating) indicate dangerously low operation of that function. This avoids many false alarms caused by one sensor having a low output such as due to accidental disconnection of a wire. | 02-21-2013 |
20130046159 | OPTICAL SENSOR FOR MEASURING PHYSIOLOGICAL PROPERTIES - The invention provides a physiological probe that comfortably attaches to the base of the patient's thumb, thereby freeing up their fingers for conventional activities in a hospital, such as reading and eating. The probe, which comprises a separate cradle module and sensor module, secures to the thumb and measures time-dependent signals corresponding to LEDs operating near 660 and 905 nm. The cradle module, which contains elements subject to wear, is preferably provided as a disposable unit. | 02-21-2013 |
20130046160 | METHOD OF ANALYZING AND PROCESSING SIGNALS - A physiological measurement system is disclosed which can take a pulse oximetry signal such as a photoplethysmogram from a patient and then analyse the signal to measure physiological parameters including respiration, pulse, oxygen saturation and movement. The system comprises a pulse oximeter which includes a light emitting device and a photodetector attachable to a subject to obtain a pulse oximetry signal; analogue to digital converter means arranged to convert said pulse oximetry signal into a digital pulse oximetry signal; signal processing means suitable to receive said digital pulse oximetry signal and arranged to decompose that signal by wavelet transform means; feature extraction means arranged to derive physiological information from the decomposed signal; an analyser component arranged to collect information from the feature extraction means; and data output means arranged in communication with the analyser component. | 02-21-2013 |
20130046161 | METHOD OF ANALYZING AND PROCESSING SIGNALS - A physiological measurement system is disclosed which can take a pulse oximetry signal such as a photoplethysmogram from a patient and then analyse the signal to measure physiological parameters including respiration, pulse, oxygen saturation and movement. The system comprises a pulse oximeter which includes a light emitting device and a photodetector attachable to a subject to obtain a pulse oximetry signal; analogue to digital converter means arranged to convert said pulse oximetry signal into a digital pulse oximetry signal; signal processing means suitable to receive said digital pulse oximetry signal and arranged to decompose that signal by wavelet transform means; feature extraction means arranged to derive physiological information from the decomposed signal; an analyser component arranged to collect information from the feature extraction means; and data output means arranged in communication with the analyser component. | 02-21-2013 |
20130046162 | SYSTEM AND METHOD FOR HIGH RESOLUTION WIRELESS FULL DISCLOSURE ECG EPISODE MONITORING AND ANALYSIS - High resolution full disclosure ECG data is transferred from a body sensor device to a handheld device via a wireless protocol. The handheld device transfers the full disclosure ECG data via a network to a center for analysis. | 02-21-2013 |
20130053664 | ELIMINATION OF THE EFFECTS OF IRREGULAR CARDIAC CYCLES IN THE DETERMINATION OF CARDIOVASCULAR PARAMETERS - Methods for determining a cardiovascular parameter, e.g., a parameter reflecting fluid or volume responsiveness, using a modified waveform dataset are described. The waveform dataset corresponds to a signal, for example, from an arterial blood pressure, or any signal proportional to, or derived from the arterial pressure signal. These methods involve identifying individual cardiac cycles in the waveform dataset, measuring the waveform characteristics for the individual cycles, then determining if the individual cardiac cycles are regular cardiac cycles or irregular cardiac cycles. Once any irregular cardiac cycles are detected, a respiratory parameter is measured. Next, a modified waveform dataset containing the waveform characteristics of the regular cardiac cycles and the waveform characteristics of the irregular cardiac cycles is created wherein the waveform characteristics of the irregular cardiac cycles are replaced with estimated waveform characteristics. Finally, a cardiovascular parameter is determined using the modified waveform dataset. | 02-28-2013 |
20130060110 | SYSTEM AND METHOD FOR AUTOMATIC DETECTION OF A PLURALITY OF SPO2 TIME SERIES PATTERN TYPES - The disclosed embodiments relate to pulse oximetry. An exemplary pulse oximeter comprises a probe that is adapted to be attached to a body part of a patient to create a signal indicative of an oxygen saturation of blood of the patient, and a processor that is adapted to receive the signal produced by the probe, to calculate an SPO2 value based on the signal, to detect a plurality of pattern types of SPO2 indicative of pathophysiologic events, and to produce an output indicative of a detected one of the plurality of pattern types. | 03-07-2013 |
20130066174 | VENOUS OXYGEN SATURATION SYSTEMS AND METHODS - Methods and systems are discussed for determining venous oxygen saturation by calculating a ratio of ratios from respiration-induced baseline modulations. A calculated venous ratio of ratios may be compared with a look-up table value to estimate venous oxygen saturation. A calculated venous ratio of ratios is compared with an arterial ratio of ratios to determine whether baseline modulations are the result of a subject's respiration or movement. Such a determination is also made by deriving a venous ratio of ratios using a transform technique, such as a continuous wavelet transform. Derived venous and arterial saturation values are used to non-invasively determine a cardiac output of the subject. | 03-14-2013 |
20130066175 | VENOUS OXYGEN SATURATION SYSTEMS AND METHODS - Methods and systems are discussed for determining venous oxygen saturation by calculating a ratio of ratios from respiration-induced baseline modulations. A calculated venous ratio of ratios may be compared with a look-up table value to estimate venous oxygen saturation. A calculated venous ratio of ratios is compared with an arterial ratio of ratios to determine whether baseline modulations are the result of a subject's respiration or movement. Such a determination is also made by deriving a venous ratio of ratios using a transform technique, such as a continuous wavelet transform. Derived venous and arterial saturation values are used to non-invasively determine a cardiac output of the subject. | 03-14-2013 |
20130066176 | VENOUS OXYGEN SATURATION SYSTEMS AND METHODS - Methods and systems are discussed for determining venous oxygen saturation by calculating a ratio of ratios from respiration-induced baseline modulations. A calculated venous ratio of ratios may be compared with a look-up table value to estimate venous oxygen saturation. A calculated venous ratio of ratios is compared with an arterial ratio of ratios to determine whether baseline modulations are the result of a subject's respiration or movement. Such a determination is also made by deriving a venous ratio of ratios using a transform technique, such as a continuous wavelet transform. Derived venous and arterial saturation values are used to non-invasively determine a cardiac output of the subject. | 03-14-2013 |
20130066177 | BIOLOGICAL SIGNAL MEASURING APPARATUS - The calculation amount of the whole can be reduced. A biological signal measuring apparatus includes a biological signal measuring unit which measures a biological signal; and a calculation processing unit which performs calculation processes on the measured biological signal, wherein the calculation processing unit has: a first calculation processing unit which performs calculation processes required for calculating the biological signal, and which is independently controllable; and a second calculation processing unit which performs a specific calculation process, and which is independently controllable, and, when the first calculation processing unit satisfies given conditions, the second calculation processing unit is caused to perform the specific calculation process. | 03-14-2013 |
20130072771 | OPTICAL FINGER MOUSE, ELECTRONIC DEVICE AND PHYSIOLOGICAL CHARACTERISTICS DETECTION DEVICE - There is provided an optical finger mouse including two light sources, an image sensor and a processing unit. The two light sources emit light of different wavelengths to illuminate a finger surface. The image sensor receives reflected light from the finger surface to generate a plurality of image frames. The processing unit detects a displacement and a contact status of the finger surface and a physiological characteristic of a user according to the plurality of image frames. There is further provided an electronic device and a physiological characteristic detection device. | 03-21-2013 |
20130079609 | SHIELDED CABLE FOR MEDICAL SENSOR - Present embodiments include a cable configured to transmit signals between a pulse oximetry sensor and a patient monitor. The cable includes a first set of conductors adapted to connect to an emitter of the pulse oximetry sensor, a second set of conductors adapted to connect to a photodetector of the pulse oximetry sensor, and a conductive jacketing surrounding only the second set of conductors and adapted to shield the second set of conductors from electromagnetic interference (EMI). The conductive jacketing includes a conductive filler disposed within a polymeric matrix. The cable also includes a nonconductive jacketing surrounding the conductive jacketing, the nonconductive jacketing being configured to electrically insulate the conductive jacketing. | 03-28-2013 |
20130079610 | PERFUSION INDEX SMOOTHER - An embodiment of the present disclosure seeks to smooth a perfusion index measurement through use of a baseline perfusion index measurement and/or through the use of multiple PI calculations. The combination of the baseline perfusion index measurement reduces an error between a calculated measurement of PI and actual conditions. | 03-28-2013 |
20130085355 | MONITORING SYSTEM - A system and method for non-invasive monitoring of cardiac activity in a human or animal is disclosed. A radiation source directs radiation through a patient site, and a detector detects radiation after passing through a patient tissue. A processor processes data derived from the detected radiation, determining pulse peaks and troughs and calculating area under a pulse peak to provide a real time cardiac output indicator. The radiation wavelength is on a haemoglobin spectral isosbestic point, not influenced by changes in SpO2 concentration. The processor performs numerical integration of pulse data between troughs, and wherein said integration is performed per pulse. Preferably, the processor monitors trends, thus providing very useful information and reducing need for calibration. | 04-04-2013 |
20130096402 | APPARATUS AND METHOD FOR PREDICTION OF RAPID SYMPTOMATIC BLOOD PRESSURE DECREASE - A monitoring arrangement | 04-18-2013 |
20130096403 | APPARATUS AND METHOD FOR IMPROVING TRAINING THRESHOLD - The present invention generally relates to a non-invasive biosensor device configured to measure physiological parameters of a subject. In one aspect, a method of determining a training threshold of a subject is provided. The method includes the step of detecting an oxygenation parameter of a tissue of the subject using Near InfraRed Spectroscopy (NIRS). The method further includes the step of processing the oxygenation parameter. Additionally, the method includes the step of determining the training threshold of the subject using the result of the processing. In another aspect, a biosensor device for determining a lactate threshold of a subject during exercise is provided. In a further aspect, a biosensor device for measuring parameters of a subject during exercise is provided. | 04-18-2013 |
20130096404 | METHOD AND SYSTEM FOR SLEEP DISTURBANCE ANALYSIS - A system for automatic sleep test analysis, the system comprising: a pulse oximeter for continuously monitoring oxygen saturation values of a patient; a capnograph for continuously monitoring exhaled carbon dioxide (C02) values of the patient; and a computing unit configured to compute a continuous integrated sleep score based on a sequential analysis of the oxygen saturation values and the exhaled C02 values, wherein the continuous integrated sleep score is indicative of the patient's breathing-related sleep quality during at least a portion of the sleep test. | 04-18-2013 |
20130102864 | PORTABLE PULSEOXIMETER FOR A DIRECT AND IMMEDIATE AUTOMATED EVALUATION OF THE CARDIAC RHYTHM (REGULARITY) AND RELATED METHOD - A method and system of patient monitoring, the system performs short term acquisition of the plethysmographic waveform of a patient from a portable blood oxygenation level monitoring device and establishes whether the patient has an episode of Atrial Fibrillation (AF) or has a Normal Sinus Rhythm (NSR) or any other not-specific rhythm irregularity. Such classification is implemented directly in the device, suitable for at home use, and the result of the classification is displayed automatically using a three-state, traffic-light indicator. | 04-25-2013 |
20130109936 | MEDICAL SENSOR AND TECHNIQUE FOR USING THE SAME | 05-02-2013 |
20130109937 | TWO-PART PATCH SENSOR FOR MONITORING VITAL SIGNS | 05-02-2013 |
20130116520 | SINGLE AND MULTI NODE, SEMI-DISPOSABLE WEARABLE MEDICAL ELECTRONIC PATCHES FOR BIO-SIGNAL MONITORING AND ROBUST FEATURE EXTRACTION - A wireless modular, multi-modal, multi-node patch platform is described. The platform preferably comprises low-cost semi-disposable patch design aiming at unobtrusive ambulatory monitoring of multiple physiological parameters. Owing to its modular design it can be interfaced with various low-power RF communication and data storage technologies, while the data fusion of multi-modal and multi-node features facilitates measurement of several bio-signals from multiple on-body locations for robust feature extraction. Exemplary results of the patch platform are presented which illustrate the capability to extract respiration rate from three different independent metrics, which combined together can give a more robust estimate of the actual respiratory rate. | 05-09-2013 |
20130123593 | OXIMETER AMBIENT LIGHT CANCELLATION - A pulse oximeter method and apparatus which provides (1) a notch filter at a distance between a modulation frequency and a common multiple of commonly used power line frequencies (50, 60, 100 and 120) and also (2) a demodulation frequency greater than a highest pulse rate of a person and lower than any harmonic of 50, 60, 100 or 120 Hz, to filter ambient light interference, while choosing an optimum demodulation frequency that avoids interference from the notch filter or from harmonics of the line interference. Also, ambient light for any low frequency interference, such as power line interference, is measured both before and after each of the light emitter wavelengths and the average of the ambient light is then subtracted from the detected signal. | 05-16-2013 |
20130131473 | OPTICAL DISTANCE MEASUREMENT SYSTEM AND OPERATION METHOD THEREOF - There is provided an operation method of an optical distance measurement system including a first mode and a second mode. The first mode is configured to detect a finger distance. The second mode is configured to detect a physiological characteristic, wherein the optical distance measurement system transfers from the first mode to the second mode when the finger distance is within a predetermined range. There is further provided an optical distance measurement system. | 05-23-2013 |
20130131474 | REMOTE CONTROLLER AND DISPLAY SYSTEM - There is provided a remote controller including a plurality of press buttons, an optical finger mouse and a transmission interface. The press buttons are configured to trigger a control signal. The optical finger mouse is configured to detect a physiological characteristic and a displacement. The transmission interface is configured to output the control signal, the physiological characteristic and the displacement to a display device. There is further provided a display system. | 05-23-2013 |
20130131475 | PHOTOPLETHYSMOGRAPHY DEVICE AND METHOD - A system and method for measuring one or more light-absorption related blood analyte concentration parameters of a mammalian subject, is disclosed. In some embodiments, the system comprises: a) a photoplethysmography (PPG) device configured to effect a PPG measurement by illuminating skin of the subject with at least two distinct wavelengths of light and determining relative absorbance at each of the wavelengths; b) a dynamic light scattering measurement (DLS) device configured to effect a DLS measurement of the subject to rheologically measure a pulse parameter of the subject; and c) electronic circuitry configured to: i) temporally correlating the results of the PPG and DLS measurements; and ii) accordance with the temporal correlation between the PPG and DLS measurements, assessing value(s) of the one or more light-absorption related blood analyte concentration parameter(s). | 05-23-2013 |
20130131476 | OXIMETRIC PLETHYSMOGRAPHY - Systems and methods for estimating a plethysmograph waveform are provided. In some aspects, a system includes a detector module configured to receive, from a single channel, an oximeter output signal indicative of light absorption in a patient. The oximeter output signal includes infrared light components and red light components. The system also includes a processing module configured to determine an indicator of a ratio of (i) an indicator of at least one of the infrared light components to (ii) an indicator of at least one of the red light components. The processing module is configured to determine, based on the indicator of the ratio, an indicator of a plethysmograph waveform of the patient. | 05-23-2013 |
20130137946 | MEDICAL DEVICE WITH CONDITIONAL POWER CONSUMPTION - Embodiments of the present disclosure relate to a system and method for reducing power consumption of a medical device based on one or more physiological parameters. For example, the medical device may be operated in a low power mode if a physiological parameter trend is above a certain threshold. In the low power mode, the processing power may be reduced relative to a high power mode. The low power mode may be associated with reduced processing and output rate. | 05-30-2013 |
20130137947 | LED DRIVE CIRCUIT AND METHOD FOR USING SAME - In various embodiments, there is provided an LED drive circuit and a method for using the same. Specifically, the present disclosure is directed to an LED drive circuit for pulse oximeters. In an embodiment, the LED drive circuit includes a current mirror configured to provide drive current to an LED of a sensor. Additionally, the method includes providing current to first and second current mirrors, wherein the first and second current mirrors are configured to control first and second light sources. | 05-30-2013 |
20130137948 | Signal Processing Method, Signal Processing Apparatus, and Pulse Photometer Using the Same - A method of processing first and second signals obtained by measuring a medium, to obtain a pulse wave signal and an artifact signal which are separated, includes: separating vectors of the first and second signals by using a separation matrix into a vector of the pulse wave signal and a vector of the artifact signal, the separation matrix including a norm ratio of a stable zone of the pulse wave signal and a compensated norm ratio of an artifact zone. | 05-30-2013 |
20130144140 | MULTI-MODAL IMAGING OF BLOOD FLOW - The application features methods, devices, and systems for measuring blood flow in a subject. The computer-implemented methods include receiving functional magnetic resonance imaging (fMRI) data that provides information on at least one of volume or oxygenation of blood at one or more locations in a body over a first predetermined length of time. The methods also include receiving near-infrared spectroscopic (NIRS) imaging or measurement data representing at least one of blood concentration or oxygenation at a first portion of the body over a second predetermined length of time. The methods further include deriving, from the fMRI data corresponding to a second portion of the body, a time varying data set representing changes in blood oxygenation or volume or both blood oxygenation and volume at the second portion over the first predetermined length of time and determining, by a computing device, a time delay and a value of a similarity metric corresponding to a part of the spectroscopic imaging data that most closely matches the time varying data set. The time delay represents a difference between a first time in which blood flows from a third portion in the body to the first portion and a second time in which blood flows to the second portion from the third portion. The value of the similarity metric represents an amount of blood at the second portion. An estimate of a characteristic of at least one of blood flow or blood volume in the second portion at a given time is determined based on the time delay and the value of the similarity metric. | 06-06-2013 |
20130150687 | Apparatus and program for evaluating biological function - An apparatus and a program are provided which are capable of simultaneously measuring, evaluating, imaging and displaying the biological function of sites with different biological functions, such as the brain and the muscle, different parts of the brain or different muscle locations, using near-infrared spectroscopy. In an apparatus for evaluating biological function K, physiological indices, including parameters derived from changes in deoxyhemoglobin concentration and changes in oxyhemoglobin concentration, are calculated by a calculating part of a controller. To measure simultaneously, evaluate, image and display the biological functions of sites with different biological function, such as the brain and the muscle, different parts of the brain or different muscle locations, these physiological indices from different sites of the living body are adjusted in such a way that they can be compared with each other by the calculating part and displayed by a display part. | 06-13-2013 |
20130158375 | Alarm Processor for Detection of Adverse Hemodynamic Effects of Cardiac Arrhythmia - The disclosed embodiments relate to an apparatus and method for providing a warning. In one example, an apparatus includes a sensor, which is configured to be coupled to a body of a patient and to output a photoplethysmograph signal, which is indicative of pulse waveforms in the body. The apparatus also includes a processor, which is coupled to process the photoplethysmograph signal so as to identify sequential pulse waveforms in the signal, the processor detecting a cardiac arrhythmia based on identifying a shape feature of the pulse waveform occurring simultaneously with a change in rate or rhythm of the pulse waveforms or an electrocardiographic waveform, and to output a warning responsive to the simultaneous occurrence. | 06-20-2013 |
20130172702 | Method of Assessing Blood Volume Using Photoelectric Plethysmography - A method and system for assessing blood volume within a subject includes generating a cardiovascular waveform representing physiological characteristics of a subject and determining blood volume of the subject by analyzing the cardiovascular waveform. The step of analyzing includes generating a first trace of the per heart-beat maximums of the cardiovascular waveform, which is representative of the systolic pressure upon the cardiovascular signal, generating a second trace of the per heart-beat minimums of the cardiovascular waveform, which is representative of the diastolic pressure upon the cardiovascular signal, and comparing the respective first trace and the second trace to generate an estimate of relative blood volume within the subject. In accordance with an alternate method of analyzing harmonic analysis is applied to the cardiovascular waveform, extracting a frequency signal created by ventilation and applying the extracted frequency signal in determining blood volume of the subject. | 07-04-2013 |
20130178725 | STACKED ADHESIVE OPTICAL SENSOR - An optical sensor having a cover layer, an emitter disposed on a first side of the cover, a detector disposed on the first side of said cover, and a plurality of stacked independent adhesive layers disposed on the same first side of the cover, wherein the top most exposed adhesive layer is attached to a patient's skin. Thus, when the sensor is removed to perform a site check of the tissue location, one of the adhesive layers may also be removed and discarded, exposing a fresh adhesive surface below for re-attachment to a patient's skin. The independent pieces of the adhesive layers can be serially used to extend the useful life of the product. | 07-11-2013 |
20130190581 | AUTOMATED CCHD SCREENING AND DETECTION - Automated critical congenital heart defect (“CCHD”) screening systems and processes are described. A caregiver may be guided to use a single or dual sensor pulse oximeter to obtain pre- and post-ductal blood oxygenation measurements. A delta of the measurements indicates the possible existence or nonexistence of a CCHD. Errors in the measurements are reduced by a configurable measurement confidence threshold based on, for example, a perfusion index. Measurement data may be stored and retrieved from a remote data processing center for repeated screenings. | 07-25-2013 |
20130197328 | SIGNAL PROCESSING APPARATUS AND METHOD - A method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, a transformation is used to evaluate a ratio of the two measured signals in order to find appropriate coefficients. The measured signals are then fed into a signal scrubber which uses the coefficients to remove the unwanted portions. The signal scrubbing is performed in either the time domain or in the frequency domain. The method and apparatus are particularly advantageous to blood oximetry and pulserate measurements. In another embodiment, an estimate of the pulserate is obtained by applying a set of rules to a spectral transform of the scrubbed signal. In another embodiment, an estimate of the pulserate is obtained by transforming the scrubbed signal from a first spectral domain into a second spectral domain. The pulserate is found by identifying the largest spectral peak in the second spectral domain. | 08-01-2013 |
20130197329 | Systems And Methods For Estimating Values Of A Continuous Wavelet Transform - According to embodiments, techniques for estimating scalogram energy values in a wedge region of a scalogram are disclosed. A pulse oximetry system including a sensor or probe may be used to receive a photoplethysmograph (PPG) signal from a patient or subject. A scalogram, corresponding to the obtained PPG signal, may be determined. In an arrangement, energy values in the wedge region of the scalogram may be estimated by calculating a set of estimation locations in the wedge region and estimating scalogram energy values at each location. In an arrangement, scalogram energy values may be estimated based on an estimation scheme and by combining scalogram values in a vicinity region. In an arrangement, the vicinity region may include energy values in a resolved region of the scalogram and previously estimated energy values in the wedge region of the scalogram. In an arrangement, one or more signal parameters may be determined based on the resolved and estimated values of the scalogram. | 08-01-2013 |
20130197330 | PHYSIOLOGICAL MONITOR - A patient monitor has multiple sensors adapted to attach to tissue sites of a living subject. The sensors generate sensor signals that are responsive to at least two wavelengths of optical radiation after attenuation by pulsatile blood within the tissue sites. | 08-01-2013 |
20130204106 | Cloud-Based Monitoring of Medical Devices - A system for monitoring the use of a home-based medical apparatus providing medical therapy to a patient incorporates communication technology to permit communication from the operated component of the medical apparatus via a cellular network to a Cloud storage site. The operated medical apparatus can report any operational function to the Cloud storage site, which can be accessed by appropriate medical professionals or caregivers by contacting the Cloud storage site through a cellular network. If the medical apparatus is properly configured, the medical professional could change certain operational functions of the medical apparatus through the Cloud by communicating with the medical apparatus directly. Alternatively, a medical caregiver can visit the home-based patient to modify the operation of the medical apparatus. By limiting the number of visits needed to maintain proper operation of the medical apparatus, a medical caregiver can provide services to a larger number of patients. | 08-08-2013 |
20130211216 | CAPILLARY REFILL TIME DIAGNOSTIC APPARATUS AND METHODS - An apparatus for measuring capillary refill time has a measurement module containing at least two radiation sources and at least one detector configured to detect radiation from each source that interacts with and is received from a measurement region of a patient or subject. One radiation source may be characterized by a wavelength that is absorbed substantially equally by oxyhemoglobin and deoxyhemoglobin. The other radiation source may be substantially unaffected by the presence or absence of blood in the measurement region. The measurement module may be applied against a measurement region of a patient for a first time period, and the released from the measurement region for a second time period, and detected signals processed to quantitatively evaluate capillary refill time. | 08-15-2013 |
20130217987 | METHOD FOR ENHANCING PULSE OXIMETRY CALCULATIONS IN THE PRESENCE OF CORRELATED ARTIFACTS - Methods and systems for determining a physiological parameter in the presence of correlated artifact are provided. One method includes receiving two waveforms corresponding to two different wavelengths of light from a patient. Each of the two waveforms includes a correlated artifact. The method also includes combining the two waveforms to form a plurality of weighted difference waveforms, wherein the plurality of weighted difference waveforms vary from one another by a value of a multiplier. The method further includes identifying one of the weighted difference waveforms from the plurality of weighted difference waveforms using a characteristic of one or more of the plurality of weighted difference waveforms and determining a characteristic of the correlated artifact based at least in part on the identified weighted difference waveform. | 08-22-2013 |
20130225954 | SYSTEMS AND METHODS FOR RECOVERY FROM MOTOR CONTROL VIA STIMULATION TO A SUBSTITUTED SITE TO AN AFFECTED AREA - A device and methods for treating a subject with dysphagia or other neurological disease, neurological disorder, neurological injury, neurological impairment or neurodegenerative disease that affects voluntary motor control of the hyoid, pharynx, larynx, or oropharyngeal area is disclosed. A device of the invention generally comprises a vibrotactile stimulator for applying at least one stimulus to the outside surface of a subject's neck; a connector for attaching the vibrotactile stimulator to an outside surface of the subject's neck, and a switch control communicatively connected to the vibrotactile stimulator to selectively engage a manual stimulation module and/or automatic stimulation module. Stimulation of an outside surface of the throat area of a subject by a device of the invention stimulates a swallowing reflex in the subject. | 08-29-2013 |
20130231540 | AIRWAY ADAPTOR AND BIOLOGICAL INFORMATION ACQUIRING SYSTEM - An airway adaptor includes: an airway case including a gas passage, the airway case adapted to be attachable to a part of a carbon dioxide sensor configured to detect a concentration of carbon dioxide contained in exhalation, flowing into the gas passage, of the subject, the exhalation; a nasal cannula having a pair of insertion portions inserted into nostrils of the subject to guide exhalation from the nostrils to the gas passage; a mouth guide placed in front of a mouth of the subject to guide exhalation from the mouth to the gas passage; a light-emitting element supported by one of the insertion portions; and a light-receiving element supported by the other of the insertion portions. When the insertion portions are inserted into the nostrils, the light-emitting element and the light-receiving element are opposed to each other across a nasal septum of the subject. | 09-05-2013 |
20130237782 | PULSE OXIMETRY SYSTEM - Systems, methods, and devices for intercommunication between a medical sensor and an electronic patient monitor are provided. For example, one embodiment of a system for communicably coupling a medical sensor to an electronic patient monitor may include a sensor-side communication connector and a monitor-side communication connector. The sensor-side communication connector may be capable of receiving a raw physiological measurement signal from the medical sensor, and the monitor-side communication connector may be capable of providing a digital physiological measurement signal based at least in part on the raw physiological measurement signal to the electronic patient monitor via a data link. | 09-12-2013 |
20130237783 | PULSE OXIMETRY CABLE ASSEMBLY AND SYSTEM - Systems, methods, and devices for intercommunication between a medical sensor and an electronic patient monitor are provided. For example, one embodiment of a system for communicably coupling a medical sensor to an electronic patient monitor may include a sensor-side communication connector and a monitor-side communication connector. The sensor-side communication connector may be capable of receiving a raw physiological measurement signal from the medical sensor, and the monitor-side communication connector may be capable of providing a digital physiological measurement signal based at least in part on the raw physiological measurement signal to the electronic patient monitor via a data link. | 09-12-2013 |
20130245407 | Cervical Immobilization Collar With Arterial Cooling Elements and Method of Using The Same - A method for selective cooling of the brain of a patient includes providing a cervical immobilization collar, the collar including a substantially annular support structure having an extended axial length, an anterior opening, and a securing member capable of substantially covering the anterior opening. The method also includes applying the cervical immobilization collar to the patient, placing a first cooling element within the anterior opening of the substantially annular support structure, and securing the first cooling element within the anterior opening. | 09-19-2013 |
20130245408 | HANDHELD PULSE OXIMETRY SYSTEM - Embodiments disclosed herein may include a medical device and a method for powering a medical device are disclosed. The medical device may be able to operate independent of a plug-in and a wall socket as a power source by way of a manual power source. Additionally, shock resistant components are described which may protect the medical device from damage typically encountered during manually powering and using the pulse oximeter in areas where traditional power sources such as a wall outlet are unavailable. | 09-19-2013 |
20130261414 | HAND-HELD DEVICE HAVING HEALTH MONITORING CAPABILITIES - A method, a computer readable media and a hand-held device, the hand-held device may include a first sensor that is positioned such as to be contacted by a first hand of a user when the user holds the hand-held device; a second sensor that is positioned such as to be contacted by a second hand of the user when the user holds the hand-held device; wherein at least one sensor of the first sensor and the second sensor is a hybrid sensor that comprises an electrode, an illumination element and a light detector; and a health monitoring module arranged to process detections signals from the electrode and from the light detector such as to provide processed signals that are indicative of a state of the user. | 10-03-2013 |
20130261415 | SYSTEM AND METHODS FOR PHYSIOLOGICAL MONITORING - Embodiments of devices, methods, and non-transitory computer readable media for monitoring a subject are presented. The monitoring device includes at least one sensor configured to monitor one or more physiological parameters of a subject and a processing unit operatively coupled to the sensor. The sensor comprises a plurality of radiation sources and detectors disposed on a flexible substrate in a designated physical arrangement. The processing unit is configured to dynamically configure an operational geometry of the sensor by controlling the intensity of one or more of the radiation sources and the gain of one or more of the detectors so as to satisfy at least one quality metric associated with one or more physiological parameters of the subject. | 10-03-2013 |
20130267805 | SYSTEM AND METHOD FOR DETECTING VENTILATORY INSTABILITY - Embodiments described herein may include systems and methods for detecting events that may be associated with sleep apnea. Some embodiments are directed to a system and/or method for automated detection of reduction in airflow events using polysomnograph signals, wherein the reduction in airflow events may relate to sleep apnea. The PSG signals may be limited to four signals, including data from an airflow channel, a blood oxygen saturation channel, a chest movement channel, and an abdomen movement channel. Using information from these channels, some embodiments may automatically identify reduction in airflow events. | 10-10-2013 |
20130274570 | APPARATUS AND METHOD FOR PREDICTION OF RAPID SYMPTOMATIC BLOOD PRESSURE DECREASE - A monitoring arrangement | 10-17-2013 |
20130274571 | HYPERSATURATION INDEX - Embodiments of the present disclosure provide a hypersaturation index for measuring a patient's absorption of oxygen in the blood stream after a patient has reached 100% oxygen saturation. This hypersaturation index provides an indication of the partial pressure of oxygen of a patient. In an embodiment of the present invention, a hypersaturation index is calculated based on the absorption ratio of two different wavelengths of energy at a measuring site. In an embodiment of the invention, a maximum hypersaturation index threshold is determined such that an alarm is triggered when the hypersaturation index reaches or exceeds the threshold. In another embodiment, an alarm is triggered when the hypersaturation index reaches or falls below its starting point when it was first calculated. | 10-17-2013 |
20130281804 | METHODS AND SYSTEMS FOR MONITORING A PATIENT TO REDUCE THE INCIDENCE OF PRESSURE ULCERS - Systems, methods, and apparatus are provided for preventing and treating pressure ulcers in bedfast patients. The invention includes monitoring a bedfast patient using a sensor array disposed between a patient and a support surface, the sensor array adapted to transmit signals indicative of interfacial pressure and blood oxygen saturation levels; and a processor coupled to the sensor array and adapted to receive the signals from the sensor array to determine if an undesirable condition exists. Numerous additional aspects are disclosed. | 10-24-2013 |
20130281805 | METHOD AND SYSTEM FOR DETECTION OF RESPIRATORY VARIATION IN PLETHYSMOGRAPHIC OXIMETRY - A method and system for detection of pulsus paradoxus are provided. In one embodiment, the method includes determining a power spectrum density for a plethysmographic waveform and identifying pulsus paradoxus based on the power spectrum density. The power spectrum density may include a first wave peak indicative of a respiratory rate and a second wave peak indicative of a heart rate. Pulsus paradoxus can be identified by comparing a height of the first wave peak and a height of the second wave peak. | 10-24-2013 |
20130296669 | Wireless, Reusable, Rechargeable Medical Sensors and System for Recharging and Disinfecting the Same - Embodiments described herein may include systems and method for monitoring physiological parameters of a patient. Specifically, embodiments disclose wireless, reusable, rechargeable medical sensors that include an inductive coil coupled to a rechargeable battery. Additionally, embodiments disclose systems and methods for recharging and disinfecting the disclosed medical sensors. | 11-07-2013 |
20130296670 | Wireless, Reusable, Rechargeable Medical Sensors and System for Recharging and Disinfecting the Same - Embodiments described herein may include systems and method for monitoring physiological parameters of a patient. Specifically, embodiments disclose wireless, reusable, rechargeable medical sensors that include an inductive coil coupled to a rechargeable battery. Additionally, embodiments disclose systems and methods for recharging and disinfecting the disclosed medical sensors. | 11-07-2013 |
20130296671 | Method for Using a Pulse Oximetry Signal to Monitor Blood Pressure - A system for continuously monitoring the blood pressure of a patient over an extended time interval requires using a blood pressure measuring unit (e.g. a sphygmomanometer) to calibrate an oximeter. Specifically, the oximeter is used to continuously detect and measure amplitudes for each blood flow pulse of the patient. Periodically, the sphygmomanometer is used to measure blood pressures (systolic and diastolic) in an artery of the patient. Immediately after the measurement cycle is completed, a computer correlates the measured systolic pressure with the pulse amplitude that is detected by the oximeter. Thereafter, the pulse amplitudes that are detected by the oximeter are used as indications of variations in the systolic pressure during the extended time interval that follows. | 11-07-2013 |
20130296672 | NONINVASIVE PHYSIOLOGICAL SENSOR COVER - A sensor cover according to embodiments of the disclosure is capable of being used with a noninvasive physiological sensor, such as a pulse oximetry sensor. Certain embodiments of the sensor cover reduce or eliminate false readings from the sensor when the sensor is not in use, for example, by blocking a light detecting component of a pulse oximeter sensor when the pulse oximeter sensor is active but not in use. In certain embodiment, the sensor cover has a pattern that allows it to be more easily seen on a surface such as a floor. Further, embodiments of the sensor cover prevent contamination of the sensor. Additionally, embodiments of the sensor cover can prevent damage to the sensor. | 11-07-2013 |
20130296673 | OPTICAL MEASUREMENT DEVICE AND A METHOD FOR AN OPTICAL MEASUREMENT - A reflectance-based optical measurement device and a method for a reflectance-based optical measurement are provided. The device comprises an illumination and detection assembly configured to output light to a surface portion of a user for measurement and to detect the output light reflected from said surface portion of the user as a signal; a coupling member configured for coupling in a cableless configuration to a personal mobile processing device; a measurement surface configured to allow access to said measurement surface by the surface portion of the user; wherein said access is provided by the optical device being holderless such that the surface portion of the user is allowed access to said measurement surface from all directions in a single plane; and further wherein said coupling member is arranged to transmit the detected signal to the personal mobile processing device. | 11-07-2013 |
20130296674 | SYSTEMS AND METHODS FOR NORMALIZING A PLETHYSMOGRAPH SIGNAL FOR IMPROVED FEATURE ANALYSIS - The present disclosure relates to systems and methods for analyzing and normalizing signals, such as PPG signals, for use in patent monitoring. The PPG signal may be detected using a continuous non-invasive blood pressure monitoring system and the normalized signals may be used to determine whether a recalibration of the system should be performed. | 11-07-2013 |
20130296675 | METHOD FOR RESPIRATION RATE AND BLOOD PRESSURE ALARM MANAGEMENT - Embodiments of the present disclosure relate to display features that facilitate observation of monitored physiological data. According to certain embodiments, a monitoring system may include a monitor capable of receiving data related to the physiological parameters and storing data related to the parameters. The monitor may include a microprocessor configured to determine a blood pressure baseline from the data and to establish an alarm sensitivity for blood pressure based on the blood pressure baseline. The alarm sensitivity may comprise a first tier, a second tier, a third tier, and a fourth tier, and each tier may correspond to a blood pressure range. The alarm sensitivity may relate to an acceptable percent shift of the blood pressure from the blood pressure baseline, and the acceptable percent shift for at least one of the tiers is different from the acceptable percent shift of another one of the tiers. | 11-07-2013 |
20130324811 | OPTICAL INSTRUMENT WITH AMBIENT LIGHT REMOVAL - Processing circuitry may process a physiological signal such as a light signal attenuated by a subject. The physiological signal may include a desired component and an undesired component. A first filtering operation may be performed to remove at least a portion of the undesired component and a second filtering operation may be performed to reduce an undesired distortion introduced by the first filter. The transfer function of the second filter may be substantially the inverse of the transfer function of the first filter. One or more physiological parameters may be determined based on the filtered physiological signal. | 12-05-2013 |
20130324812 | CARDIAC PULSE COEFFICIENT OF VARIATION AND BREATHING MONITORING SYSTEM AND METHOD FOR EXTRACTING INFORMATION FROM THE CARDIAC PULSE - A system and method to extract and measure awareness and a breathing rate information from the cardiac pulse uses plethysmographic and oximeter sensors. The information finds applications in patient monitoring during surgery, intensive care, sleep therapy, and sleep detection in critical operations of airplanes, trucks, automobiles, trains, and in biofeedback therapy. | 12-05-2013 |
20130324813 | CERTIFICATION APPARATUS AND METHOD FOR A MEDICAL DEVICE COMPUTER - Provided herein are methods and apparatuses for certifying computers for use in conjunction with medical devices. These methods may be used in conjunction with a computer that includes software for operating the medical device. To certify a particular computer, one or more testing algorithms or routines for processing data, e.g., data representative of a typical output generated by use of the medical device on a patient, may be executed and the results may be compared to an expected result. In particular embodiments, the certification process may use data stored on the device itself to determine certification or may use data stored with or bundled with the software for operating the device. | 12-05-2013 |
20130324814 | ESTIMATION OF SYSTEMIC VASCULAR RESISTANCE AND CARDIAC OUTPUT USING ARTERIAL PULSE OXIMETRY WAVEFORMS - The invention relates to a method to estimate sytemic vascular resistance (SVR) and cardiac output (CO) from a pulse oximeter (photoplethysmography, PTG), comprising the steps of generating arterial blood pulse wave forms having first and second peaks, generating a Fast Fourier Transform and calculating the ratio of the height of the second peak (B) to the first peak (A) across the entire measurement using the equation FFTRI to estimate SVR, and the equation CO=(SR/FFTRI)×80 to estimate CO, where SR=S2/S1 and wherein SI and S2 are the areas under the whole PTG wave and the part in diastolic phase, respectively. | 12-05-2013 |
20130331669 | MULTI-SPECTRAL IMAGING SYSTEM AND METHOD FOR REMOTE BIOMETRIC MEASUREMENT OF HUMAN PHYSIOLOGICAL PARAMETERS - Some embodiments relate to a method of collecting light reflected from a subject and analyzing the light to monitor time-varying physiological parameters of the subject. Other embodiments relate to a system including collection optics to receive light reflected from a subject, filters to filter the light around a number of wavelengths, image capture zones to receive filtered light from the filters and to generate data to represent the filtered light and an image and signal processing system to monitor time-varying physiological parameters of the subject indicated by the data. | 12-12-2013 |
20130331670 | CONGENITAL HEART DISEASE MONITOR - A congenital heart disease monitor utilizes a sensor capable of emitting multiple wavelengths of optical radiation into a tissue site and detecting the optical radiation after attenuation by pulsatile blood flowing within the tissue site. A patient monitor is capable of receiving a sensor signal corresponding to the detected optical radiation and calculating at least one physiological parameter in response. The physiological parameter is measured at a baseline site and a comparison site and a difference in these measurements is calculated. A potential congenital heart disease condition in indicated according to the measured physiological parameter at each of the sites or the calculated difference in the measured physiological parameter between the sites or both. | 12-12-2013 |
20130338460 | Wearable Device for Continuous Cardiac Monitoring - A physiological monitor for measuring a pulsatile motion signal (MoCG) that is delayed from, but at the same rate as, the heartbeat of a user. In one embodiment, the system includes a housing configured to be worn on the body of a user; at least one MoCG sensor, within the housing, that measures a pulsatile motion signal (MoCG) that is delayed from, but at the same rate as, the heartbeat of the user; and at least one data processor that calculates, solely based on an output of the at least one MoCG sensor, at least one of (i) heart rate (HR) and activity level for the user, and (ii) respiratory rate (RR), stroke volume (SV), and cardiac output (CO) for the user. In another embodiment, the at least one data processor is within the housing. | 12-19-2013 |
20130338461 | MULTI-WAVELENGTH PHYSIOLOGICAL MONITOR - A physiological monitor for determining blood oxygen saturation of a medical patient includes a sensor, a signal processor and a display. The sensor includes at least three light emitting diodes. Each light emitting diode is adapted to emit light of a different wavelength. The sensor also includes a detector, where the detector is adapted to receive light from the three light emitting diodes after being attenuated by tissue. The detector generates an output signal based at least in part upon the received light. The signal processor determines blood oxygen saturation based at least upon the output signal, and the display provides an indication of the blood oxygen saturation. | 12-19-2013 |
20130345532 | MEDICAL VENTILATOR WITH INTEGRATED OXIMETER DATA - This disclosure describes systems and methods for managing the ventilation of a patient being ventilated by a medical ventilator. The disclosure describes a novel approach of displaying ventilator information integrated with oximeter information. The disclosure further describes a novel approach of alarming based on the integration of ventilator information with oximeter information. | 12-26-2013 |
20140005506 | RESCUE SCENE VIDEO TRANSMISSION | 01-02-2014 |
20140012108 | ANGIOSOME-BASED PERFUSION MONITORING SYSTEM - A compression device includes at least one pressurizable bladder to substantially occlude blood flow into skin capillary beds adjacent to the at least one pressurizable bladder, and a plurality of perfusion sensors. In operation a first-angiosome sensor detects the perfusion parameter of a skin capillary bed in a first angiosome of the limb, and a second-angiosome sensor detects the perfusion parameter of a skin capillary bed in a second angiosome of the limb that is different from the first angiosome. A control circuit maps sensor signals from the first-angiosome sensor to the first angiosome or a first artery of the limb, and maps sensor signals from the second-angiosome sensor to the second angiosome or a second artery of the limb different from the first artery of the limb. For each perfusion sensor, the control circuit determines whether the received sensor signals are indicative of peripheral artery disease. | 01-09-2014 |
20140012109 | CONSISTENT SIGNAL SELECTION BY SIGNAL SEGMENT SELECTION TECHNIQUES - According to embodiments, techniques for selecting a consistent part of a signal, including a photoplethysmograph (PPG) signal, are disclosed. A pulse oximetry system including a sensor or probe may be used to obtain a PPG signal from a subject. Signal peaks may be identified in the PPG signal. Characteristics of the signal peaks, including the amplitude levels of the signal peaks and/or the time-distance between the signal peaks may be used to determine if the PPG signal is consistent. In an embodiment, signal peaks are processed based on a consistency metric, and the processed signal peaks are compared to the consistency metric to determine if the PPG signal is consistent. If the PPG signal is determined to be consistent, the PPG signal may be further analyzed to determine an underlying signal parameter, including, for example, a patient respiration rate. If the PPG signal is determined to be inconsistent, the inconsistent portion of the signal may be removed from the overall signal or otherwise transformed. | 01-09-2014 |
20140012110 | PROCESSING AND DETECTING BASELINE CHANGES IN SIGNALS - Systems and methods for detecting the occurrence of events from a signal are provided. A signal processing system may analyze baseline changes and changes in signal characteristics to detect events from a signal. The system may also detect events by analyzing energy parameters and artifacts in a scalogram of the signal. Further, the system may detect events by analyzing both the signal and its corresponding scalogram. | 01-09-2014 |
20140012111 | IMPLANTABLE SYSTEMS AND METHODS FOR IDENTIFYING A CONTRA-ICTAL CONDITION IN A SUBJECT - Systems and methods of monitoring a subject's neurological condition are provided. In some embodiments, the method includes the steps of analyzing a physiological signal (such as an EEG) from a subject to determine if the subject is in a contra-ictal condition; and if the subject is in a contra-ictal condition, providing an indication (e.g., to the subject and/or to a caregiver) that the subject is in the contra-ictal condition. The systems and methods may utilize a minimally invasive, leadless device to monitor the subject's condition. In some embodiments, if the subject is in a pro-ictal condition, the method includes the step of providing an indication (such as a red light) that the subject is in the pro-ictal condition. | 01-09-2014 |
20140031651 | SYSTEM AND METHOD FOR QUANTITATIVELY ASSESSING DIABETIC CARDIAC AUTONOMIC NEUROPATHY IN TYPE I DIABETIC BIOLOGICAL SUBJECT - The present disclosure provides a method and an apparatus for identifying development of diabetic cardiovascular autonomic neuropathy (DCAN) in a biological subject. In one aspect, the method includes collecting data associated with heart rates of a biological subject, and processing the collected data to extract primary and secondary components of the collected data by performing a principal dynamic mode (PDM) analysis. A significant reduction of the primary or secondary component at a predetermined time period can be indicative of the DCAN development. | 01-30-2014 |
20140031652 | SELECTION OF ENSEMBLE AVERAGING WEIGHTS FOR A PULSE OXIMETER BASED ON SIGNAL QUALTIY METRICS - A pulse oximeter system is presently disclosed. The pulse oximeter system includes a processor and circuitry. The processor and circuitry are configured to receive light waveforms from a sensor, determine at least one signal quality metric for the light waveforms, calculate at least one weight using a continuously variable weighting function based on the at least one signal quality metric, and ensemble average the light waveforms using the at least one calculated weight. | 01-30-2014 |
20140039283 | SYSTEM FOR ANALYZING OXIMETRY DATA - A method and system for the analysis of a patient's oximetry data to detect sleep-disordered breathing is provided. The system employs an algorithm to reliably detect patient arousals and correlate those with accelerated heart rate and oxygen saturation levels in a manner that detects sleep-disordered breathing via the respiratory mask. Initially a timing channel is formed based on a plethsmography signal using an optical finger sensor. Based on the pleth waveform, a respiratory wave form is prepared that represents respiration rate. An arousal mask is applied to the signal based on attenuations in the pleth signal. Once arousals are identified the time required for changes to propagate from the lungs to the blood gas is subtracted from the onset time of the arousal. As a result if the timing agrees with dropping oxygen saturation or falling arterial pH then the arousal is indicated as a chemoreflex related arousal. | 02-06-2014 |
20140039284 | Optical Measuring Device - An accurate measurement can be made of the light absorbance of deep layer tissue such as in a human body or a fruit. The thickness of fat is computed. A first specific distance and a second specific distance corresponding to the computed fat thickness are computed based a predetermined relationship between the fat thickness, the first specific distance, and measurement sensitivity of a surface layer and measurement sensitivity of a deep layer when light is received at a position the first specific distance away from a light emitting means. A third specific distance and a fourth specific distance are computed corresponding to the computed fat thickness based on a predetermined relationship between the fat thickness, the third specific distance and a measurement sensitivity of an intervening layer and a measurement sensitivity of the deep layer when light is received at a position the third specific distance away from the light emitting means. | 02-06-2014 |
20140046153 | MONITORING VOLAEMIC CONDITION IN A HUMAN OR ANIMAL SUBJECT - A method for processing data to monitor volaemic condition in a human or animal subject includes identifying one or more reference values for each of one or more haemodynamic variables; receiving haemodynamic data representing the one or more haemodynamic variables measured from the subject over time; for at least one of the one or more haemodynamic variables, comparing the haemodynamic data with the respective one or more reference values; and identifying the existence of abnormal volaemic condition in the subject when the comparison indicates a deviation from the one or more reference values for at least one of the haemodynamic variables. The method may be combined with a visual display of haemodynamic data in real time, ideally in conjunction with a visual indicator of ideal reference values. | 02-13-2014 |
20140058230 | EAR SENSOR - An ear sensor provides a sensor body having a base, legs extending from the base and an optical housing disposed at ends of the legs opposite the base. An optical assembly is disposed in the housing. The sensor body is flexed so as to position the housing over a concha site. The sensor body is unflexed so as to attach the housing to the concha site and position the optical assembly to illuminate the concha site. The optical assembly is configured to transmit optical radiation into concha site tissue and receive the optical radiation after attenuation by pulsatile blood flow within the tissue. | 02-27-2014 |
20140058231 | SYSTEMS AND METHODS FOR DETECTING PULSES - According to embodiments, systems and methods are provided for detecting pulses in a PPG signal. Local minima and maxima points may be identified in the PPG signal. Each minimum may be paired with an adjacent maximum forming an upstroke segment. Noise may be removed by comparing adjacent segments and ignoring segments that are too long or too large. Notches in the pulse may be identified and ignored by analyzing adjacent segments. Adjacent upstroke segments may be combined as a single upstroke if the lengths of adjacent upstroke segments are about the same, have similar slopes, and the end point of one segment is close to the start point of an adjacent segment. Segments having small temporal or amplitude difference relative to adjacent segments may be disregarded. The remaining segments may represent the pulse upticks. A sliding time window may be used instead to detect pulses in the PPG signal. | 02-27-2014 |
20140066732 | SYSTEM AND METHOD FOR DETERMINING CARDIAC OUTPUT - A system is configured to determine cardiac output of a patient. The system may include a first sub-system configured to detect a first physiological signal, and a second sub-system configured to detect a second physiological signal that differs from the first physiological signal. The first and second sub-systems may be separate and distinct from one another. The system may also include a cardiac output determination module that is configured to determine the cardiac output based, at least in part, on the first and second physiological signals. | 03-06-2014 |
20140073888 | NON-INVASIVE METHOD FOR MONITORING AUTOREGULATION - A system includes a controller that receives a blood pressure signal and an oxygen saturation signal. The blood pressure signal represents a non-invasive measure of blood pressure. The oxygen saturation signal represents a non-invasive measure of oxygen saturation. The controller generates an autoregulation status signal representing a status of cerebral autoregulation. The autoregulation status signal is based, at least in part, on a relationship between the measured blood pressure and the measured oxygen saturation. An exemplary method may include receiving the blood pressure signal and the oxygen saturation signal, defining a relationship between the measured blood pressure and the measured oxygen saturation, determining an autoregulation status based at least in part on the defined relationship, and generating an autoregulation status signal representing the determined autoregulation status. | 03-13-2014 |
20140073889 | SYSTEMS AND METHODS FOR DETERMINING FLUID RESPONSIVENESS - A system is provided including a ventilator detection module, a circulatory detection module, and an analysis module. The ventilator detection module is configured to detect ventilator information representative of a ventilation activity. The circulatory detection module is configured to detect circulatory information representative of the circulation of the patient. The analysis module is configured to obtain a ventilator waveform based at least in part on the ventilator information, obtain a circulatory waveform based at least in part on the circulatory information, combine the ventilator waveform and the circulatory waveform to provide a mixed waveform, and isolate a portion of the mixed waveform to identify a ventilator responsiveness waveform representative of an effect of the ventilator. | 03-13-2014 |
20140073890 | SYSTEMS AND METHODS FOR DETERMINING FLUID RESPONSIVENESS - A system is provided including a respiratory detection module, a circulatory detection module, and an analysis module. The respiratory detection module is configured to detect respiratory information representative of respiration of a patient. The circulatory detection module configured to detect circulatory information representative of circulation of the patient. The analysis module is configured to obtain a respiratory waveform based at least in part on the respiratory information, obtain a circulatory waveform based at least in part on the circulatory information, combine the respiratory waveform and the circulatory waveform to provide a mixed waveform, and isolate a portion of the mixed waveform to identify a respiratory responsiveness waveform representative of an effect of the respiration of the patient on the mixed waveform. | 03-13-2014 |
20140081098 | SENSOR SYSTEM - A sensor system is provided for determining a pulse transit time measurement of a patient. The sensor system includes a carotid sensor device configured to be positioned on a neck of the patient over a carotid artery of the patient. The carotid sensor device is configured to detect a plethysmograph waveform from the carotid artery. The sensor system includes a temporal sensor device that is operatively connected to the carotid sensor device. The temporal sensor device is configured to be positioned on the patient over a temporal artery of the patient. The temporal sensor device is configured to detect a plethysmograph waveform from the temporal artery. | 03-20-2014 |
20140081099 | HAND-HELD VITAL SIGNS MONITOR - The invention features a vital sign monitor that includes: 1) a hardware control component featuring a microprocessor that operates an interactive, icon-driven GUI on an LCD; and, 2) a sensor component that connects to the control component through a shielded coaxial cable. The sensor features: 1) an optical component that generates a first signal; 2) a plurality electrical components (e.g. electrodes) that generate a second signal; and, 3) an acoustic component that generates a third signal. The microprocessor runs compiled computer code that operates: 1) the touch panel LCD; 2) a graphical user interface that includes multiple icons corresponding to different software operations; 3) a file-management system for storing and retrieving vital sign information; and 4) USB and short-range wireless systems for transferring data to and from the device to a PC. | 03-20-2014 |
20140081100 | PHYSIOLOGICAL MONITOR WITH MOBILE COMPUTING DEVICE CONNECTIVITY - Systems and method for monitoring patient physiological data are presented herein. In one embodiment, a physiological sensor and a mobile computing device can be connected via a cable or cables, and a processing board can be connected between the sensor and the mobile computing device to conduct advanced signal processing on the data received from the sensor before the data is transmitted for display on the mobile computing device. | 03-20-2014 |
20140081101 | BLOOD PRESSURE MEASUREMENT APPARATUS - A blood pressure measurement apparatus for measuring blood pressure in a predetermined period includes a blood pressure measuring unit for measuring the blood pressure of a subject, an information acquiring unit for acquiring information that is related to variation in blood pressure and changes in a time-series in the predetermined period, a determining unit for determining whether or not the information acquired by the information acquiring unit satisfies a predetermined condition, and a trigger output unit for, in a case where the determining unit determines that the predetermined condition is satisfied, causing the blood pressure measuring unit to start and execute blood pressure measurement. The predetermined condition is expressed as a function of time that varies and is measured in the predetermined period. | 03-20-2014 |
20140088385 | BODY-WORN PULSE OXIMETER - The invention provides a body-worn system that continuously measures pulse oximetry and blood pressure, along with motion, posture, and activity level, from an ambulatory patient. The system features an oximetry probe that comfortably clips to the base of the patient's thumb, thereby freeing up their fingers for conventional activities in a hospital, such as reading and eating. The probe secures to the thumb and measures time-dependent signals corresponding to LEDs operating near 660 and 905 nm. Analog versions of these signals pass through a low-profile cable to a wrist-worn transceiver that encloses a processing unit. Also within the wrist-worn transceiver is an accelerometer, a wireless system that sends information through a network to a remote receiver, e.g. a computer located in a central nursing station. | 03-27-2014 |
20140088386 | CARDIOVASCULAR RISK EVALUATION APPARATUS - A cardiovascular risk evaluation apparatus includes a hypoxic acquisition unit for acquiring a measurement result that includes a blood oxygen saturation level measured in a hypoxic period in which the blood oxygen saturation level of a subject is lower than a threshold value, and a blood pressure measured when the blood oxygen saturation level was measured; a non-hypoxic acquisition unit for acquiring a measurement result that includes a blood oxygen saturation level measured in a non-hypoxic period of the blood oxygen saturation level of the subject, and a blood pressure measured when the blood oxygen saturation level was measured; and an indicator acquisition unit for acquiring a cardiovascular risk evaluation indicator for the subject based on the relationship between blood oxygen saturation level and blood pressure, which is based on the measurement results acquired by the hypoxic acquisition unit and the non-hypoxic acquisition unit. | 03-27-2014 |
20140094668 | METHOD FOR SPECTROPHOTOMETRIC BLOOD OXYGENATION MONITORING - According to the present invention, a method and apparatus for non-invasively determining the blood oxygen saturation level within a subject's tissue is provided. The method comprises the steps of: a) providing a spectrophotometric sensor operable to transmit light into the subject's tissue, and to sense the light; b) detecting light after passage through the subject's tissue using the sensor, and producing initial signal data from the light sensed; c) calibrating the sensor to that particular subject using the initial signal data, thereby accounting for the specific physical characteristics of the particular subject's tissue being sensed; and d) using the calibrated sensor to determine the blood oxygen parameter value within the subject's tissue. | 04-03-2014 |
20140094669 | NASAL AND ORAL PATIENT INTERFACES - A patient interface for communicating fluids to and/or from a patient's nasal cavity and/or oral cavity is disclosed. In addition, a patient interface for fluid and physiological function monitoring proximate to the patient's nasal cavity and/or oral cavity is disclosed. An apnea monitor and a method for monitoring apnea are also disclosed. | 04-03-2014 |
20140094670 | Methods And Systems For Monitoring Respiration With Photoplethysmography - The present invention relates to novel lip/cheek probes for detection of pulse-based differences in light absorbence across the vascularized tissue of a lip or cheek of a patient. These probes are fabricated to provide signals to estimate arterial oxygen saturation, and/or to obtain other photoplethysmographic data. The present invention also relates to a combined probe/cannula. The present invention also relates to other devices that combine a pulse oximeter probe with a device supplying oxygen or other oxygen-containing gas to a person in need thereof, and to sampling means for exhaled carbon dioxide in combination with the novel lip/cheek probes. In certain embodiments, an additional limitation of a control means to adjust the flow rate of such gas is provided, where such control is directed by the blood oxygen saturation data obtained from the pulse oximeter probe. | 04-03-2014 |
20140107440 | DEVICE AND METHOD FOR MONITORING OF ABSOLUTE OXYGEN SATURATION AND TISSUE HEMOGLOBIN CONCENTRATION - A method and medical device for detecting signals that detects emitted light scattered by a volume of tissue delivered along a first pathway at a plurality of wavelengths to generate corresponding first detected light intensity output signals, detects emitted light scattered by the volume of tissue delivered along a second pathway different from the first pathway at a plurality of wavelengths to generate corresponding second detected light intensity output signals, determines whether a difference between the emitted light detected along the first pathway and the emitted light detected along the second pathway is greater than a predetermined threshold, and alters sensing by the device in response to the determining whether a difference is greater than the predetermined threshold. | 04-17-2014 |
20140114152 | Device and Method for Combined Continuous Non-Invasive Measurement of Blood Pressure and Pulse Oximetry (SPO2) - An apparatus and method for measuring at least two patient parameters is provided. A first cuff includes a first inflatable bladder, a first light emitting device and a first sensor that senses light data for use in calculating at least two patient parameters. A second cuff includes a second inflatable bladder, a second light emitting device and a second sensor that senses light data for use in calculating the at least two patient parameters. A controller is coupled the first and second sensors and when the controller causes the bladder of one of the first and second cuffs to inflate, the sensor of the one of the first and second cuffs sensing first light data used in determining a first of the at least two patient parameters and the sensor of the other of the one of first and second cuffs simultaneously senses second light data used in determining of a second of the at least two patient parameters. | 04-24-2014 |
20140135601 | User replaceable optical subsystem for laser-based photoplethysmography - A replaceable optical subsystem for a laser-based photoplethysmographic monitor. At least one laser light source ( | 05-15-2014 |
20140135602 | Reactance sensing for improved sensor palcement - A sensor assembly which includes a first physiological parameter sensor configured to sense a physiological parameter and a first reactance sensor connected to the first physiological parameter sensor. The first reactance sensor provides a signal corresponding to a position of a tissue relative to the first reactance sensor and corresponding to the first physiological parameter sensor. | 05-15-2014 |
20140135603 | SYSTEMS AND METHODS FOR PATIENT MONITORING - Systems and methods for patient monitoring that include receiving a set first of SpO | 05-15-2014 |
20140135604 | SYSTEM AND METHOD FOR PREDICTING THE VIABILITY OF A BODY TISSUE IN A PATIENT, AND MEASURING DEVICE USED THEREIN - The invention relates to a system for predicting the viability of a body tissue in a patient. The system comprises a computing device, and a first pressure measuring device for measuring local perfusion pressure in the body tissue of the patient. This measuring device is connected to the computing device. A second pressure measuring device is provided for measuring the systemic perfusion pressure of the patient, said second pressure measuring device being connected to the computing device. A feedback indicator is connected to the computing device and is adapted to indicate the viability of the tissue calculated by the computing device on the basis of the measured local and systemic perfusion pressures. The invention also includes a method of predicting the viability of the body tissue and to the first pressure measuring device. | 05-15-2014 |
20140142402 | NONINVASIVE MULTI-PARAMETER PATIENT MONITOR - Embodiments of the present disclosure include a handheld multi-parameter patient monitor capable of determining multiple physiological parameters from the output of a light sensitive detector capable of detecting light attenuated by body tissue. For example, in an embodiment, the monitor is capable of advantageously and accurately displaying one or more of pulse rate, plethysmograph data, perfusion quality, signal confidence, and values of blood constituents in body tissue, including for example, arterial carbon monoxide saturation (“HbCO”), methemoglobin saturation (“HbMet”), total hemoglobin (“Hbt”), arterial oxygen saturation (“SpO | 05-22-2014 |
20140142403 | BIOMETRIC MONITORING DEVICE WITH HEART RATE MEASUREMENT ACTIVATED BY A SINGLE USER-GESTURE - A biometric monitoring device measuring various biometric information is provided that allows the person to take and/or display a heart rate reading by a simple user interaction with the device, e.g., by simply touching a heart rate sensor surface area or moving the device in a defined motion pattern. Some embodiments of this disclosure provide biometric monitoring devices that allow a person to get a quick heart rate reading without removing the device or interrupting their other activities. Some embodiments provide heart rate monitoring with other desirable features such as feedback on data acquisition status. | 05-22-2014 |
20140142404 | SINGLE-CELL LABEL-FREE PHOTOACOUSTIC FLOWOXIGRAPHY IN VIVO - A single-RBC photoacoustic flowoxigraphy (FOG) device is described that delivers laser pulses of two different wavelengths separated by a pulse separation period of about 20 μs. This separation period is sufficiently brief to enable pulses of two different wavelengths to illuminate the same single moving RBC. The acoustic signals elicited by the single RBC in response to the laser pulses of two different wavelengths may be analyzed using pulse oximetry methods similar to those described herein above to simultaneously determine a variety of functional parameters. | 05-22-2014 |
20140148664 | DEVICE AND METHOD FOR ASSESSING REGIONAL BLOOD CIRCULATION - A method and device related to medicine is provided. The device for assessing regional blood circulation comprises an ultrasonic instrument for measuring blood flow and a pulse oximeter with two light-emitting diodes. The acoustic heads of the sensors are shaped and designed taking into account the anatomical characteristics of the area being investigated. When working with a microcirculatory section of tissue, a software unit “Micro” is used. Data are displayed on a screen. The device permits highly accurate monitoring of linear and volumetric blood flow rates, the resistivity index and the pulsatility index, a dopplergram, a plethysmogram and the heart rate. | 05-29-2014 |
20140155713 | Devices, Systems And Methods For Plethysmographic Monitoring At The Nose - The present invention relates to optimized gas supply utilizing photoplethysmography. Flow rate, pressure or amount of gas is adjusted as a function of blood oxygen saturation data, photoplethysmography signals, or both, obtained from the pulse oximeter probe. | 06-05-2014 |
20140155714 | Apparatus and Method for Beneficial Modification of Biorhythmic Activity - Apparatus is provided, including a sensor, adapted to generate a sensor signal indicative of biorhythmic activity of a user of the apparatus, the sensor signal having a first characteristic, indicative of a voluntary action of the user, and a second characteristic, indicative of a benefit-related variable of the user. The apparatus also includes a control unit, adapted to receive the sensor signal, and, responsive to the second characteristics generate an output signal which directs the user to modify a parameter of the voluntary action indicated by the first characteristic. | 06-05-2014 |
20140155715 | WAVELENGTH SWITCHING FOR PULSE OXIMETRY - The present disclosure describes techniques that may provide more accurate estimates of arterial oxygen saturation using pulse oximetry by switching between a wavelength spectrum of at least a first and a second light source so that the arterial oxygen saturation estimates at low (e.g., in the range below 75%), medium (e.g., greater than or equal to 75% and less than or equal to 84%), and high (e.g., greater than 84% range) arterial oxygen saturation values are more accurately calculated. In one embodiment, light emitted from a near 660 nm and a near 900 nm emitter pair may be used when the arterial oxygen saturation range is high. In another embodiment, light emitted from a near 730 nm and a near 900 nm emitter pair may be used when the arterial oxygen saturation range is low. In yet another embodiment, light emitted from both a near 660 nm-900 nm emitter pair and light emitted from a near 730 nm-900 nm emitter pair may be used when the arterial oxygen saturation range is in the middle range. Priming techniques may also be used to reduce or eliminate start up delays of certain oximetry system components. | 06-05-2014 |
20140163343 | APPARATUS, SYSTEM, AND METHOD FOR MONITORING PHYSIOLOGICAL SIGNS - An apparatus, system, and method monitors the motion, breathing, heart rate and sleep state of subjects, e.g., humans, in a convenient, non-invasive/non-contact, and low-cost fashion. More particularly, the motion, breathing, and heart rate signals are obtained through processing applied to a raw signal obtained in a non-contact fashion, typically using a radio-frequency sensor. Periods of sleep disturbed respiration, or central apnea can be detected through analysis of the respiratory signal. The mean heart rate, and derived information, such as the presence of cardiac arrhythmias can be determined from the cardiac signal. Motion estimates can be used to recognize disturbed sleep and periodic limb movements. The sleep state may be determined by applying a classifier model to the resulting streams of respiratory, cardiac and motion data. A means for display of the sleep state, respiratory, cardiac, and movement status may also be provided. | 06-12-2014 |
20140163344 | PERFUSION TREND INDICATOR - A perfusion trend indicator inputs a plethysmograph waveform having pulses corresponding to pulsatile blood flow within a tissue site. Perfusion values are derived corresponding to the pulses. Time windows are defined corresponding to the perfusion values. Representative perfusion values are defined corresponding to the time windows. A perfusion trend is calculated according to differences between representative perfusion values of adjacent ones of the time windows. | 06-12-2014 |
20140171769 | SYSTEMS AND METHODS FOR DISTINGUISHING BETWEEN CENTRAL APNEA AND OBSTRUCTIVE APNEA - A patient monitoring system may acquire a time series of oxygen saturation data based on a physiological signal. A potential apneic event may be detected in the time series of oxygen saturation data in the form of a desaturation followed by a resaturation defined by a fall peak, nadir, and rise peak crossing respective thresholds. The potential apneic event may be qualified using a plurality of metrics derived from a portion of the time series of oxygen saturation data that corresponds to the potential apneic event. The qualified apneic event may be classified as being due to one of central apnea and obstructive apnea based on the output of a classification neural network the inputs to which comprise at least a second plurality of metrics. | 06-19-2014 |
20140171770 | INTRAVENOUS APPARATUS AND METHOD - A method and apparatus for inserting and monitoring the placement of a cannula tip within a peripheral vein of a human body where the cannula includes a sensor located at predetermined location and mounted on the cannula for sensing the biological material of the body to guide the insertion of the cannula tip into the vein and alerts to the withdrawal of the cannula tip from the vein in the body. | 06-19-2014 |
20140180042 | Methods and Systems for Detecting a Sensor Off Condition Using A Reference Ambient Characteristic - A physiological monitoring system may use photonic signals at one or more wavelengths to determine physiological parameters. During monitoring, a physiological sensor may become improperly positioned, which may affect the physiological attenuation of the photonic signals, and accordingly a detected light signal. The detected light signal may include an ambient light component and a signal component corresponding to the one or more wavelengths of light. The physiological monitoring system may determine a reference characteristic based on the ambient light component, and compare the signal component with the ambient light component to determine a sensor-off condition. | 06-26-2014 |
20140180043 | METHODS AND SYSTEMS FOR DETERMINING SIGNAL QUALITY OF A PHYSIOLOGICAL SIGNAL - A physiological monitoring system may use photonic signals at one or more wavelengths to determine physiological parameters. The system may monitor a photoplethysmograph (PPG) signal, which may include a periodic component, and an aperiodic component. An attractor may be generated based on a first segment of the PPG signal and a second segment of the PPG signal shifted in time relative to the first segment by a time delay. The system may analyze points of the attractor that correspond to a curve, analyze the distribution of the attractor about a curve, or both, to determine a signal quality metric indicative of cycle to cycle variation in the PPG signal. | 06-26-2014 |
20140180044 | METHODS AND SYSTEMS FOR DETERMINING SIGNAL QUALITY OF A PHYSIOLOGICAL SIGNAL - A physiological monitoring system may use photonic signals at one or more wavelengths to determine physiological parameters. The system may receive a photoplethysmograph signal, and generated a difference signal based on the photoplethysmograph signal. The system may specify a segment of the photoplethysmograph signal and a segment of the difference signal. The system may associate each value of the segment of the photoplethysmograph signal to a corresponding value of the segment of the difference signal to generate associated value pairs. The system may compare the associated value pairs to a reference characteristic, and determine a signal quality metric based on the comparison. | 06-26-2014 |
20140180045 | LIFESAVING SUPPORT APPARATUS AND LIFESAVING SUPPORT SYSTEM - A lifesaving support apparatus includes: a sensor section which is adapted to be attachable to a patient, and which is configured to acquire information of blood flow of the patient; a determining section which, based on the information of blood flow, is configured to determine whether or not a use of an automatic external defibrillator is necessary; and an outputting section which is configured to notify a rescuer of information which is determined by the determining section. | 06-26-2014 |
20140180046 | METHOD AND SYSTEM FOR MONITORING INTRACRANIAL PRESSURE - Embodiments of the present invention relate to a system and method for monitoring intracranial pressure. Embodiments of the present invention include emitting an electromagnetic wavelength into forehead tissue of a patient and detecting characteristics of the electromagnetic wavelength after the electromagnetic wavelength has been scattered by the tissue. The characteristics may include variations in the electromagnetic wavelength corresponding to a pulse. Further, embodiments of the present invention include analyzing the variations to identify venous pulsations, and determining whether intracranial pressure is elevated in the patient based on a correlation between the venous pulsations and levels of intracranial pressure. | 06-26-2014 |
20140187883 | SYSTEMS AND METHODS FOR ENSEMBLE AVERAGING IN PULSE OXIMETRY - Various methods and systems for ensemble averaging signals in a pulse oximeter are provided. An ensemble averaging method includes receiving an ensemble average signal corresponding to an ensemble average of electromagnetic radiation signals detected from a blood perfused tissue of a patient and receiving a pulse signal corresponding to a pulse detected by the pulse oximeter. The method also includes warping a time axis of the ensemble average signal via dynamic programming, warping a time axis of the pulse signal via dynamic programming, or both to produce a warped ensemble average signal and a warped pulse signal having a substantially uniform width. The method further includes ensemble averaging the warped ensemble average signal and the warped pulse signal to produce an updated ensemble average signal having the substantially uniform width. | 07-03-2014 |
20140187884 | SYSTEMS AND METHODS FOR ENSEMBLE AVERAGING IN PULSE OXIMETRY - Various methods and systems for ensemble averaging signals in a pulse oximeter are provided. An ensemble averaging method includes receiving an ensemble average signal corresponding to an ensemble average of electromagnetic radiation signals detected from a blood perfused tissue of a patient and receiving a pulse signal corresponding to a pulse detected by the pulse oximeter. The method also includes scaling a width of the ensemble average signal, a width of the pulse signal, or both to produce a scaled ensemble average signal and a scaled pulse signal having a substantially uniform width. The method further includes ensemble averaging the scaled ensemble average signal and the scaled pulse signal to produce an updated ensemble average signal having the substantially uniform width. | 07-03-2014 |
20140187885 | Sensor for Measuring Vital Parameters in the Auditory Canal - The invention relates to a sensor for measuring a vital parameter in the auditory canal of a human or of an animal and to a method for determining tissue variables, preferably the oxygen saturation in the blood, particularly for performing pulse oximetry, preferably transmission pulse oximetry, in the auditory canal. The sensor comprises a sensor element support ( | 07-03-2014 |
20140187886 | PULSE OXIMETERS AND SYSTEMS AND METHODS FOR OBTAINING DATA THEREFROM - A tele-health solution promotes patient wellness and reduces healthcare costs while improving patient compliance. To qualify for home oxygen or CPAP machines, a user must monitor their blood oxygen saturation (SpO | 07-03-2014 |
20140194710 | CONTACT LENS WITH INTEGRATED PULSE OXIMETER - Apparatus, systems and methods employing a contact lens having a pulse oximetry sensor to detect information indicative of a blood oxygen content and/or pulse rate of a wearer of the contact lens, are provided. In some aspects, a contact lens includes a substrate that forms at least part of a body of the contact lens and a pulse oximetry sensor located on or within the substrate that detects information associated with at least one of blood oxygen content or a pulse rate of a wearer of the contact lens. The pulse oximetry sensor comprises one or more light emitting diodes that illuminate a blood vessel of at least one of a region of an eye or an eyelid and a detector that receives light reflected from the blood vessel and generates the information. | 07-10-2014 |
20140194711 | PATIENT MONITOR FOR DETERMINING MICROCIRCULATION STATE - As placement of a physiological monitoring sensor is typically at a sensor site located at an extremity of the body, the state of microcirculation, such as whether vessels are blocked or open, can have a significant effect on the readings at the sensor site. It is therefore desirable to provide a patient monitor and/or physiological monitoring sensor capable of distinguishing the microcirculation state of blood vessels. In some embodiments, the patient monitor and/or sensor provide a warning and/or compensates a measurement based on the microcirculation state. In some embodiments, a microcirculation determination process implementable by the patient monitor and/or sensor is used to determine the state of microcirculation of the patient. | 07-10-2014 |
20140200420 | WRIST-MOUNTED PHYSIOLOGICAL MEASUREMENT DEVICE - A sensor interface is configured to receive a sensor signal. A transmitter generates a transmit signal. A receiver receives the signal corresponding to the transmit signal. Further, a monitor interface is configured to communicate a waveform to the monitor so that measurements derived by the monitor from the waveform are generally equivalent to measurements derivable from the sensor signal. | 07-17-2014 |
20140213862 | WAVELET-BASED SYSTEM AND METHOD FOR ANALYZING A PHYSIOLOGICAL SIGNAL - Certain embodiments of the present disclosure provide a system and method for analyzing a physiological signal detected from an individual. The system may include a physiological signal detection module configured to detect the physiological signal of the individual, a wavelet formation module configured to form a wavelet based on the physiological signal, and a wavelet transform module configured to generate a scalogram by transforming the physiological signal with the wavelet based on the physiological signal. | 07-31-2014 |
20140213863 | Low-Complexity Sensor Displacement Tolerant Pulse Oximetry Based Heart Rate Measurement - Methods for heart rate measurement based on pulse oximetry are provided that can tolerate some degree of relative displacement of a photoplethysmograph (PPG) heart rate monitor device. In some methods, artifact compensation based on a reference signal is performed on the PPG signal data to remove artifacts in the signal that may be caused, for example, by changes in ambient light and/or motion of a person wearing the monitor device. The reference signal used for artifact compensation may be generated using an LED of a complementary wavelength to that of the LED used to generate the PPG signal, or by driving an LED at a lower current than the current applied to generate the PPG signal. | 07-31-2014 |
20140221796 | DEVICES AND METHODS FOR TEMPERATURE DETERMINATION - A temperature determination method includes temporarily contacting a forehead of a subject with a first surface of a removable patch, and exposing a second surface of the patch opposite the first surface to ambient conditions. The method also includes sensing a temperature of the first surface of the patch while the first surface is in contact with the forehead at a first location thereon, sensing a temperature of the second surface of the patch, and calculating a sub-skull temperature of the subject based on the sensed temperatures of the first and second surface. | 08-07-2014 |
20140221797 | SYSTEMS, METHODS, COMPONENTS, AND SOFTWARE FOR MONITORING AND NOTIFICATION OF VITAL SIGN CHANGES - A system and method for monitoring and notification of injury wherein an individual wears a monitoring device, the monitoring device tracks biometric data such as blood oxygen levels, heart rate, and acceleration of the individual and sends the data to a base station, the base station analyzes the data to see if bodily changes such as decreased blood oxygen levels or significant changes in heart rate or acceleration has occurred, and the base station determines whether to sound an alarm to indicate death or severe bodily injury. | 08-07-2014 |
20140235977 | NECKLACE-SHAPED PHYSIOLOGICAL MONITOR - The invention provides a neck-worn sensor (referred to herein as the ‘necklace’) that is a single, body-worn system that measures the following parameters from an ambulatory patient: heart rate, pulse rate, pulse oximetry, respiratory rate, temperature, thoracic fluid levels, stroke volume, cardiac output, and a parameter sensitive to blood pressure called pulse transit time. From stroke volume, a first algorithm employing a linear model can estimate the patient's pulse pressure. And from pulse pressure and pulse transit time, a second algorithm, also employing a linear algorithm, can estimate systolic blood pressure and diastolic blood pressure. Thus, the necklace can measure all five vital signs along with hemodynamic parameters. It also includes a motion-detecting accelerometer, from which it can determine motion-related parameters such as posture, degree of motion, activity level, respiratory-induced heaving of the chest, and falls. | 08-21-2014 |
20140235978 | NECKLACE-SHAPED PHYSIOLOGICAL MONITOR - The invention provides a neck-worn sensor (referred to herein as the ‘necklace’) that is a single, body-worn system that measures the following parameters from an ambulatory patient: heart rate, pulse rate, pulse oximetry, respiratory rate, temperature, thoracic fluid levels, stroke volume, cardiac output, and a parameter sensitive to blood pressure called pulse transit time. From stroke volume, a first algorithm employing a linear model can estimate the patient's pulse pressure. And from pulse pressure and pulse transit time, a second algorithm, also employing a linear algorithm, can estimate systolic blood pressure and diastolic blood pressure. Thus, the necklace can measure all five vital signs along with hemodynamic parameters. It also includes a motion-detecting accelerometer, from which it can determine motion-related parameters such as posture, degree of motion, activity level, respiratory-induced heaving of the chest, and falls. | 08-21-2014 |
20140235979 | NECKLACE-SHAPED PHYSIOLOGICAL MONITOR - The invention provides a neck-worn sensor (referred to herein as the ‘necklace’) that is a single, body-worn system that measures the following parameters from an ambulatory patient: heart rate, pulse rate, pulse oximetry, respiratory rate, temperature, thoracic fluid levels, stroke volume, cardiac output, and a parameter sensitive to blood pressure called pulse transit time. From stroke volume, a first algorithm employing a linear model can estimate the patient's pulse pressure. And from pulse pressure and pulse transit time, a second algorithm, also employing a linear algorithm, can estimate systolic blood pressure and diastolic blood pressure. Thus, the necklace can measure all five vital signs along with hemodynamic parameters. It also includes a motion-detecting accelerometer, from which it can determine motion-related parameters such as posture, degree of motion, activity level, respiratory-induced heaving of the chest, and falls. | 08-21-2014 |
20140235980 | HEART RATE AND PULSE MONITORING DEVICE - Methods, devices and systems for obtaining heart rate by obtaining apical and non-apical heart rate datum using first and second heart rate monitoring devices. The apical and non-apical heart rate data are input into a heart rate verification module (HRVM) that includes a number of programming instructions for effecting the invention. An apical heart rate measure and non-apical heart rate measure are calculated in the HRVM, and an acceptable heart rate range is generated using the apical heart rate measure. Whether the non-apical heart rate measure is a reliable measure of a true heart rate is identified by determining whether the non-apical heart rate measure falls within or outside the acceptable heart rate range. A split display screen of the HRVM displays the apical heart rate measure, non-apical heart rate measure, and information identifying whether the non-apical heart rate measure falls within or outside the acceptable heart rate range. | 08-21-2014 |
20140243628 | SYSTEMS AND METHODS FOR DETERMINING PHYSIOLOGICAL INFORMATION BY IDENTIFYING FIDUCIAL POINTS IN A PHYSIOLOGICAL SIGNAL - A patient monitoring system may generate a derivative signal from a physiological signal. The derivative signal may be filtered based on a pulse rate estimate associated with the physiological signal. A plurality of crossing points may be determined for the filtered derivative signal and translated to the derivative signal. A plurality of fiducial points may be determined for the derivative signal based on the plurality of crossing points. The plurality of fiducial points may be utilized to determine physiological information from the physiological signal. | 08-28-2014 |
20140243629 | SYSTEM FOR GENERATING NONINVASIVE RESPIRATORY MONITOR SIGNALS - A system for simulating various clinical conditions which are detectable by a noninvasive respiratory monitor is provided. The simulated clinical conditions may be displayed on a noninvasive respiratory monitor to replicate a variety of disease states to provide training for a clinician. The system may include a pulse oximetry simulation device and/or a CO | 08-28-2014 |
20140243630 | Methods And Devices For Central Photoplethysmographic Monitoring - Provided according to embodiments of the present invention are methods of monitoring individuals that include securing a photoplethysmography probe to at least one of a pre-auricular region and a post-auricular region of the individual and obtaining photoplethysmography signals from the photoplethysmography probe. Photoplethysmography probes and helmets related to such methods are also described herein. | 08-28-2014 |
20140243631 | NOVEL PULSE OXIMETER PROBES AND METHODS FOR USING THE SAME - Provided according to embodiments of the invention are photoplethysmography probes designed for use on a user's nasal alar. Methods of using such photoplethysmography probes are also provided herein. | 08-28-2014 |
20140249393 | Wireless monitoring of patient exercise and lifestyle - A system is provided that uses using telemetry data based on a patient habit information or patient monitoring. One or more patient monitoring devices has a unique patient ID, with personalized patient information. A patient monitoring device includes an application for monitoring exercise activity of a patient. ID circuitry is at the patient monitoring device, which includes ID storage and a communication system that reads and transmits the unique ID from an ID storage. A power source and a pathway system routes signals through the circuitry. A telemetry system is in communication with the patient monitoring device and includes a database of patient ID's which is in communication with the patient monitoring device and analyzes patient information based on the patient ID. The telemetry system receives exercise-related information directly or indirectly from the monitoring device that indicates an amount or type of exercise performed by the patient. | 09-04-2014 |
20140257062 | Automated Assessment of Peripheral Vascular Condition - An automated assessment of a patient's peripheral vascular condition includes using a pulse oximeter to generate at least a perfusion index relative to a limb or digit of the patient. Pressure is applied to the limb or digit, and while increasing or decreasing the pressure, a change in the perfusion index is determined. The change is indicative of a cessation of blood flow or a return of blood flow in the limb or digit. A systolic blood pressure is thereafter determined based on the pressure applied at the time of cessation of blood flow or the return of blood flow in the limb or digit. Using a pulse oximeter to generate a perfusion index may include transmitting light into the limb or digit, detecting light that was transmitted into tissue in the limb or digit, and calculating the perfusion index based on the light transmitted through the tissue. | 09-11-2014 |
20140257063 | METHOD OF PREDICTING ACUTE CARDIOPULMONARY EVENTS AND SURVIVABILITY OF A PATIENT - A method of producing an artificial neural network capable of predicting the survivability of a patient, including: storing in an electronic database patient health data comprising a plurality of sets of data, each set having at least one of a first parameter relating to heart rate variability data and a second parameter relating to vital sign data, each set further having a third parameter relating to patient survivability; providing a network of nodes interconnected to form an artificial neural network, the nodes comprising a plurality of artificial neurons, each artificial neuron having at least one input with an associated weight; and training the artificial neural network using the patient health data such that the associated weight of the at least one input of each artificial neuron is adjusted in response to respective first, second and third parameters of different sets of data from the patient health data. | 09-11-2014 |
20140275882 | Methods and Systems for Determining a Probe-Off Condition in a Medical Device - A physiological monitoring system may use one or more characteristics of an ambient signal to determine a probe-off condition. A physiological sensor may be used to emit one or more wavelengths of light. A light signal may be received that includes an ambient light component and one or more components corresponding to the emitted light. One or more characteristics (e.g., baseline characteristics) of the ambient light component may be determined and compared to one or more thresholds. The system may determine whether the physiological sensor is properly positioned based on the comparison. | 09-18-2014 |
20140275883 | WIRELESS SENSORS - Embodiments of the present disclosure relate to medical systems having a wireless medical sensor with a disposable portion and a reusable portion. According to certain embodiments, the disposable portion may include an emitter configured to emit one or more wavelengths of light. The reusable portion may include a power source, such as a battery, for providing power to the emitter and other various components of the sensor. In certain embodiments, the reusable portion may also include a wireless module for communicating with a patient monitor. | 09-18-2014 |
20140275884 | REUSABLE WIRELESS MEDICAL SENSORS - Embodiments of the present disclosure relate to reusable wireless sensors. According to certain embodiments, the wireless sensor may include a rechargeable battery coupled to an induction coil for recharging the battery. One or more magnets may be disposed within or coupled to the wireless sensor, and the one or more magnets may be arranged to align the induction coil of the wireless sensor with a recharging device to facilitate recharging the battery of the wireless sensor. | 09-18-2014 |
20140275885 | SELF-CONTAINED REGIONAL OXIMETRY - A handheld device includes a contact surface, an optical module, a processor, a display module, and a user operable switch. The optical module is disposed on the contact surface. The optical module has at least one optical emitter and at least one optical detector. The at least one optical detector has a light shield associated with the contact surface. The light shield is configured to exclude ambient light from the contact surface when the contact surface abuts tissue of a patient. The processor is coupled to the optical module and configured to execute instructions for determining a measure of oximetry corresponding to the tissue. The display module is coupled to the processor and is configured to indicate the measure of oximetry. The user operable switch is configured to activate at least one of the processor, the optical module, and the display module. | 09-18-2014 |
20140275886 | SENSOR FUSION AND PROBABILISTIC PARAMETER ESTIMATION METHOD AND APPARATUS - A probabilistic digital signal processor using data from multiple instruments is described. Initial probability distribution functions are input to a dynamic state-space model, which operates on state and/or model probability distribution functions to generate a prior probability distribution function, which is input to a probabilistic updater. The probabilistic updater integrates sensor data from multiple instruments with the prior to generate a posterior probability distribution function passed (1) to a probabilistic sampler, which estimates one or more parameters using the posterior, which is output or re-sampled in an iterative algorithm or (2) iteratively to the dynamic state-space model. For example, the probabilistic processor operates on fused data using a physical model, where the data originates from a mechanical system or a medical meter or instrument, such as an electrocardiogram or pulse oximeter to generate new parameter information and/or enhanced parameter information. | 09-18-2014 |
20140275887 | Systems And Methods For Monitoring Respiratory Depression - Methods and systems are disclosed for analyzing a physiological respiratory signal in order to monitor respiratory depression events. In certain embodiments, respiratory depression is monitored by extracting a respiratory signal from a photoplethysmograph (“PPG”) signal, identifying a morphological characteristic of the respiratory signal, and generating a respiratory condition signal. In certain embodiments, an alarm and therapeutic intervention strategy are triggered upon determination of respiratory depression event. In certain embodiments, a plurality of physiological signals are used to determine a respiratory depression event | 09-18-2014 |
20140275888 | Wearable Wireless Multisensor Health Monitor with Head Photoplethysmograph - Ambulatory monitoring of human health is provided by a multi-component multi-sensor wireless wearable biosignal acquisition system comprising a torso device and a peripheral device communicating wirelessly, and a mobile phone for receiving collected data and uploading it over cellular network or WiFi to a remote computer for multivariate analysis. Biosignals include EKG and PPG, from which a determination of pulse transit time can be made. | 09-18-2014 |
20140275889 | SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION FROM SEGMENTS OF A PHOTOPLETHYSMOGRAPH - A physiological monitoring system may determine respiration information from a PPG signal. The system may analyze the PPG signal with respect to itself by associating values of the PPG signal with values of a time-delayed version of the PPG signal to create pairs of associated values. A subset of associated values may be identified. Respiration metric values may be determined based on the subset of pairs. The respiration metric values may be amplitude values and/or time values corresponding to the subset of pairs. The respiration metric values may be analyzed using autocorrelation, cross-correlation, or other signal processing techniques to determine respiration information such as respiration rate. | 09-18-2014 |
20140275890 | SYSTEMS AND METHODS FOR SENSOR CALIBRATION IN PHOTOPLETHSYMOGRAPHY - Various methods and systems for obtaining calibration coefficients for pulse oximeter sensors are provided. A method includes passing current through a light emitting element in an oximeter sensor and measuring, utilizing a first voltage sensing lead, a first voltage present at an electrical input of the light emitting element. The method also includes measuring, utilizing a second voltage sensing lead, a second voltage present at an electrical output of the light emitting element and determining a forward voltage of the light emitting element based on the first and second voltages. Utilizing the determined forward voltage, a wavelength of light emitted from the light emitting element is calculated. Utilizing the calculated wavelength of the emitted light, at least one calibration coefficient for the oximeter sensor is determined. | 09-18-2014 |
20140288400 | MANUAL AND AUTOMATIC PROBE CALIBRATION - Embodiments of the present disclosure include an optical probe capable of communicating identification information to a patient monitor in addition to signals indicative of intensities of light after attenuation by body tissue. The identification information may indicate operating wavelengths of light sources, indicate a type of probe, such as, for example, that the probe is an adult probe, a pediatric probe, a neonatal probe, a disposable probe, a reusable probe, or the like. The information could also be utilized for security purposes, such as, for example, to ensure that the probe is configured properly for the oximeter, to indicate that the probe is from an authorized supplier, or the like. | 09-25-2014 |
20140296669 | ELECTRONIC HEADWEAR - A headwear assembly is provided that measures physiological changes, e.g., oxygen saturation, pulse, blood pressure, and body temperature of a user during physical exercise, to include athletic activities and other situations. The headwear assembly can provide integrated functionality with an external device such as a smart phone. The headwear assembly can be embodied in various configurations, e.g., stand-alone headband, cap, visor, or a helmet. | 10-02-2014 |
20140296670 | BIOTELEMETRY SYSTEM - The invention provides a biotelemetry system for disposition on the wrist. The device of the invention may be portable, untethered and in some instances, disposable. The features of the wrist biotelemetry system make it effective in stable, chronic or emergency medical settings. | 10-02-2014 |
20140296671 | BIOLOGICAL INFORMATION DETECTOR, BIOLOGICAL INFORMATION MEASURING DEVICE, AND METHOD FOR DESIGNING REFLECTING PART IN BIOLOGICAL INFORMATION DETECTOR - A biological information detector includes a light-emitting part, a reflecting part, a light-receiving part, a protecting part, and a processing part. The reflecting part has a curve shaped reflecting surface that is configured to reflect light emitted by the light-emitting part. The light-receiving part is configured to receive incident light that is emitted by the light-emitting part and reflected at a detection site of a user. The protecting part is configured to protect the light-emitting part, and the protecting part haw a contact surface adapted to contact with the detection site. The processing part is configured to process a light-receiving signal outputted from the light-receiving part. The light-emitting part has a light-emitting surface substantially in parallel to the contact surface, and a distance between the light-emitting surface and the contact surface is within a range of 0.4 mm to 0.9 mm. | 10-02-2014 |
20140323834 | APPARATUS MONITORING SIGNAL IN SITU - For repeatedly measuring signals from a fixed position of a tissue to monitor the blood composition, a subject adaptor is used to secure the subject position and a position fixing device uses a remote sensing tool to detect the subject position. The subject adaptor and the position fixing device are used to guide the moving of the subject relative to a position of last measurement of a first signal analyzer. The signals can be from an aggregate of the designated composition with the other ingredients of the blood. | 10-30-2014 |
20140343382 | Methods And Systems For Using A Thermistor In Probe Identification Circuits In Or Associated With Pulse Oximeter Sensors - Provided according to embodiments of the present invention are pulse oximetry systems that include a pulse oximeter sensor, and a probe identification circuit that includes a thermistor. The probe identification circuit may be part of or associated with the pulse oximeter sensor. | 11-20-2014 |
20140343383 | MEASUREMENT DEVICE, MEASUREMENT METHOD, PROGRAM AND RECORDING MEDIUM - A measurement device according to the present disclosure includes a light source which emits at least one kind of measurement light belonging to a predetermined wavelength band toward a measurement region formed of at least part of a living body, a detection unit in which a plurality of sensors is regularly arranged in a predetermined arrangement and which detects the measurement light emitted from the light source and passing through the living body with the plurality of sensors, and an analysis unit which performs analysis processing of specifying a measurement position for measuring information on pulsation along with activities of the living body from the measurement region based on a temporal change in an amount of light of the detected measurement light by use of a detection result detected by the detection unit. | 11-20-2014 |
20140350365 | MEASUREMENT DEVICE, MEASUREMENT METHOD, PROGRAM AND RECORDING MEDIUM - There is provided a measurement device including a measurement unit configured to have a light source unit configured to emit measurement light having at least one kind of wavelength for measuring a biological component included inside a living body, a detection unit configured to detect the measurement light emitted from the inside of the living body, and a polarization control unit configured to be provided in at least one position between the light source unit and the living body or between the living body and the detection unit and to control a polarization direction of the measurement light, and an analysis unit configured to compute an optical rotation degree based on a change in a polarization state of the measurement light using a measurement result obtained by the measurement unit and to analyze a concentration of the biological component based on the computed optical rotation degree. | 11-27-2014 |
20140371556 | EXERCISE AND COMMUNICATIONS SYSTEM AND ASSOCIATED METHODS - An exercise and communications system includes an interactive device, a remote device, and an external device, wherein the interactive device is configured to gather data relating to a user of the system and transmit the same to the remote device, and the remote device is configured to provide analyze the data and transmit a response to the interactive device, which in turn communicates the response to the user and additionally communication with an external device for retrieval of instructions, programs, and data, inter alia. An exercise and communications system facilitates communication between a plurality of users, each having an interactive device and a remote device. | 12-18-2014 |
20150011851 | HEART RATE AND BLOOD OXYGEN MONITORING SYSTEM - An integrated circuit device includes an insulating body provided with a number of electrically conductive leads and having a surface provided with a red LED aperture, an IR LED aperture and a photodetector aperture. The insulating body also includes an optical isolator optically separating the photodetector aperture from the red LED aperture and the IR LED aperture. A red LED is aligned with the red LED aperture, an IR LED is aligned with the IR LED aperture, and a photodetector is aligned with the photodetector aperture. | 01-08-2015 |
20150018653 | METHODS AND SYSTEMS FOR ALERTING PRACTITIONERS TO PHYSIOLOGICAL CONDITIONS - Embodiments of the present disclosure provide systems and methods for monitoring a patient to produce a signal representing a blood oxygen concentration. The signal may be analyzed to determine the presence of one or more sleep apnea events, and an integral of the signal may be calculated if the signal is outside of a set range or threshold. A practitioner may choose to be informed of the presence of sleep apnea events if the blood oxygen concentration is less then a preset limit, if an upper limit has been reached for an integral representing the severity of the oxygen deprivation over time, or anytime sleep apnea events may be present in the signal. | 01-15-2015 |
20150031971 | METHODS AND SYSTEMS FOR USING AN ESTIMATE SIGNAL TO IMPROVE SIGNAL RESOLUTION IN A PHYSIOLOGICAL MONITOR - A physiological monitoring system may receive a sensor signal from a physiological sensor. The system may generate an estimate of the sensor signal based on, for example, prior received signals. The estimate signal may be subtracted from the sensor signal using a transimpedance amplifier to generate a difference signal. A gain and/or offset may be applied to the difference signal by the amplifier. The amplified difference signal may be digitized and combined with the estimate signal to generate a high resolution digital representation of the sensor signal. Physiological information such as blood oxygen saturation, pulse rate, respiration rate, respiration effort, blood pressure, hemoglobin concentration, any other suitable physiological parameters, or any combination thereof, may be determined using the digitized sensor signal. In some embodiments, the use of the signal estimate and the amplified difference signal in processing physiological parameters may provide high resolution without high power and/or processing requirements. | 01-29-2015 |
20150031972 | Using Chest Velocity to Process Physiological Signals to Remove Chest Compression Artifacts - A method of analyzing a physiological (e.g., an ECG) signal during application of chest compressions. The method includes acquiring a physiological signal during application of chest compressions; acquiring the output of a sensor from which information on the velocity of chest compressions can be determined; and using the information on the velocity to reduce at least one signal artifact in the physiological signal resulting from the chest compressions. | 01-29-2015 |
20150038811 | LIVING BODY OPTICAL MEASUREMENT APPARATUS, LIVING BODY OPTICAL MEASUREMENT METHOD, AND ENGAGEMENT MEMBER FOR MOBILE POSITION SENSOR - A living body optical measurement apparatus of the present invention includes: a light irradiation/measurement unit for irradiating light to an object and measuring the light passed through the object, a signal processing unit for processing measurement data of the light irradiation/measurement unit and creating a living body optical measurement image, and a position measurement unit for measuring positions where light is irradiated to an object and where the passing light is extracted from the object, the light irradiation/measurement unit includes plural optical fibers. The light irradiation/measurement unit includes plural optical fibers, plural optical fiber plugs attached to the plural optical fibers respectively, and a holder fixed detachably at a measurement site of an object and holds the plural optical fiber plugs. The position measurement unit includes a mobile position sensor and an engaging member having a shape detachably engaged with the plural optical fiber plugs attached to the mobile position sensor and held in the holder. | 02-05-2015 |
20150045638 | Fingerstall Oximeter - Disclosed is a fingerstall oximeter comprising an upper housing ( | 02-12-2015 |
20150045639 | BIOLOGICAL INFORMATION DETECTOR, BIOLOGICAL INFORMATION MEASURING DEVICE, AND METHOD FOR DESIGNING REFLECTING PART IN BIOLOGICAL INFORMATION DETECTOR - A biological information detector includes a wristband, a light-emitting part, a reflecting part, a light-receiving part, a protecting part, an acceleration sensor and a processing part. The wristband is adapted to be attached to a body of a user. The light-emitting part is configured to emit green light. The reflecting part is configured to reflect the light emitted by the light-emitting part. The light-receiving part is configured to receive reflected light reflected at a detection site of the body of the user. The protecting part is configured to protect the light-emitting part, the protecting part having a contact surface configured to contact with the detection site. The acceleration sensor is configured to detect acceleration generated by the user. The processing part is configured to process a light reception signal outputted from the light-receiving part. | 02-12-2015 |
20150051463 | Oximetry Signal, Pulse-Pressure Correlator - A system and method are provided for using an oximeter to take blood pressure readings for an extended period of time. Calibration of the oximeter for this purpose requires use of a sphygmomanometer to determine a sequence of blood pressure readings taken for a patient over a sphygmomanometer duty cycle. During the duty cycle, readings for both blood pressure (sphygmomanometer) and blood flow amplitude (oximeter) are taken simultaneously at predetermined time intervals (e.g. patient pulse rate). These readings then determine an operational ratio between the two that can be used to translate pulse magnitude readings of the oximeter for presentation as blood pressure readings. Operationally, variations from the patient's systolic pressure can then be continuously monitored in real time. | 02-19-2015 |
20150057512 | Wearable heart failure monitor patch - The invention is directed to a system for acquiring electrical footprint of the heart, electrocardiogram (EKG or ECG), heart sound, heart rate, nasal airflow and pulse oximetry incorporated into a mobile device accessory. The ECG and heart sound signals are conveniently acquired and transmitted to a server via the mobile device, offering accurate heart failure analysis, and sleep disorder breathing indication. | 02-26-2015 |
20150065827 | SYSTEM AND METHOD FOR EVALUATION OF CIRCULATORY FUNCTION - A system and method for evaluating a circulatory function of an individual includes at least one connection configured to receive signals indicative of functional data relating to at least one functional parameter of the cardiovascular system of the subject and to at least two disparate locations on the subject. A processor is coupled to the at least, one connection and configured to receive the functional data from the at least one connection. The processor is also configured to compare the functional data to identify variations that deviate from an expected delay associated with the disparate locations and provide an assessment of the cardiovascular system function based on the comparison of the functional data. | 03-05-2015 |
20150065828 | METHOD AND APPARATUS FOR CONTINUOUS ASSESSMENT OF A CARDIOVASCULAR PARAMETER USING THE ARTERIAL PULSE PRESSURE PROPAGATION TIME AND WAVEFORM - A method and apparatus for determining a cardiovascular parameter including receiving an input signal corresponding to an arterial blood pressure measurement over an interval that covers at least one cardiac cycle, determining a propagation time of the input signal, determining at least one statistical moment of the input signal, and determining an estimate of the cardiovascular parameter using the propagation time and the at least one statistical moment. | 03-05-2015 |
20150065829 | SYSTEMS AND METHODS FOR RESPIRATION MONITORING - According to embodiments, techniques for determining respiratory parameters are disclosed. More suitable probe locations for determining respiratory parameters, such as respiration rate and respiratory effort, may be identified. The most suitable probe location may be selected for probe placement. A scalogram may be generated from the detected signal at the more suitable location, resulting in an enhanced breathing band for determining respiratory parameters. Flexible probes that allow for a patient's natural movement due to respiration may also be used to enhance the breathing components of the detected signal. From the enhanced signal, more accurate and reliable respiratory parameters may be determined. | 03-05-2015 |
20150073239 | CONTINUOUS CUFFLESS BLOOD PRESSURE MEASUREMENT USING A MOBILE DEVICE - A mobile blood pressure monitor is described that includes an integrated acoustic device, an optical sensor including at least one of a light source or a pulse oximeter device, and control circuitry coupled to the integrated acoustic device and the optical sensor. Additionally, a mobile electronic device configured to measure blood pressure is described that includes a mobile system and a mobile blood pressure monitor as disclosed above. In implementations, a process for measuring blood pressure includes sensing a heart sound with an integrated acoustic device, measuring a blood pulse rate at a peripheral site with an optical sensor, calculating a pulse wave transit time using a sensed heart sound and a measured blood pulse rate, and correlating a blood pressure using the heart sound and the blood pulse rate. | 03-12-2015 |
20150080687 | NON-INVASIVE METHODS FOR DETERMINING CARDIAC OUTPUT - Cardiac output is measured using a non-invasive method comprised of administering hyperbaric of hypoxic gas to the subject then after a time measuring the resultant changes in central or peripheral oxygen saturation times using a pulse oximeter located at a peripheral body site. Preferably the device is portable and is comprised of a gas cartridge, with one or more doses, and a mouth-piece, a microprocessor for performing the analysis, a pulse oximeter probe and a display for reporting the cardiac output. | 03-19-2015 |
20150094550 | DUAL-SPECTRA PULSE OXIMETER SENSORS AND METHODS OF MAKING THE SAME - A dual-spectra pulse oximeter sensor is provided. The dual-spectra pulse oximeter sensor includes a sensor substrate, an array of a plurality of pairs of wavelength sources disposed on the sensor substrate, and a plurality of wavelength conversion devices. Further, each pair of the plurality of pairs of wavelength sources comprises a pair of light emitting diodes. Moreover, one light emitting diode of each pair of light emitting diodes is operatively coupled to a wavelength conversion device of the plurality of wavelength conversion devices. | 04-02-2015 |
20150094551 | CONTINUOUS TRANSDERMAL MONITORING SYSTEM AND METHOD - Various embodiments of methods and systems for continuous transdermal monitoring (“CTM”) are disclosed. One exemplary embodiment of a continuous transdermal monitoring system comprises a sensor package. The sensor package may include a pulse oximetry sensor having a plurality of light detectors arranged as an array. One exemplary method for continuous transdermal monitoring begins by positioning a pulse oximetry sensor system, similar to the system described immediately above, adjacent to a target tissue segment. Then, the method continues by detecting a light reflected by the target tissue segment. Then, the method continues by transmitting a pulse oximetry reading(s), based at least in part on the light reflected by the target tissue segment, of the target tissue segment. Then, the method continues by analyzing the pulse oximetry reading(s). Then, the method continues by assessing the accuracy of the pulse oximetry reading from the first light detector relative to the pulse oximetry reading from the second light detector. | 04-02-2015 |
20150099952 | APPARATUS, SYSTEMS, AND METHODS FOR CARDIOPULMONARY MONITORING - Systems, methods, and computer executable instructions for monitoring a patient's cardiopulmonary status and/or providing feedback-based control regarding the same. Such methods include, and such systems are configured for, determining a cardiopulmonary status based upon measured data, e.g., from a plurality of sensors, comparing the determined cardiopulmonary status with input data, e.g., input data indicating a target cardiopulmonary status, and providing a result signal based upon the comparison. The result signal may include a display signal for displaying an indication of the result of the comparison, an audio alert signal for audibly provided an indication of the result of the comparison, and/or a control signal for controlling an exercise apparatus in accordance with the result of the comparison. | 04-09-2015 |
20150099953 | METHODS AND SYSTEMS FOR TRIGGERING PHYSIOLOGICAL MEASUREMENTS - Methods and systems are presented for triggering physiological measurements in a physiological monitor. Metrics are computed for a received physiological signal (e.g., a PPG signal), or a determined physiological parameter associated with the physiological signal (e.g., blood pressure). A change parameter is determined based on one or more of the metrics, and a variable change threshold is determined. The variable change threshold may be determined over time based on a time measure, a frequency measure, or both. The change parameter is compared to the variable change threshold, and a physiological measurement is triggered based on the comparison. The variable change threshold technique may allow measurements to be taken frequently enough to catch clinically significant changes in a physiological parameter of a subject but not so often as to interfere with the subject's comfort or the function of other medical monitors. | 04-09-2015 |
20150105636 | SYSTEM AND METHOD FOR EMERGENCY RESUSCITATION - According to various embodiments, a regional oximetry sensor may include a light emitting element configured to emit light, a light detector configured to receive the light and generate a signal based on the received light. The regional oximetry sensor, itself or in conjunction with a monitor, may enable communicating adjustments in the administration of CPR to a patient based on one or more characteristics (e.g., pulse amplitude or pulse rate) of the signal generated by the regional oximetry sensor. | 04-16-2015 |
20150105637 | PULSE OXIMETRY-BASED CARDIO-PULMONARY RESUSCITATION (CPR) QUALITY FEEDBACK SYSTEMS AND METHODS - Medical devices, plug-ins, systems, and methods for CPR quality feedback are disclosed. The medical devices can calculate peripheral circulation relevant parameters based on measured signals containing at least partial hemodynamic characteristics. Amplitude and area characteristics included in the peripheral circulation relevant parameters can further be determined for providing feedback and control relating to CPR quality during the compression process. Also, compression interruption during CPR can be evaluated based on a pulse waveform generated from the measured signals. | 04-16-2015 |
20150105638 | Photoplethysmography Device and Method - A system and method for measuring one or more light-absorption related blood analyte concentration parameters of a mammalian subject, is disclosed. In some embodiments, the system comprises: a) a photoplethysmography (PPG) device configured to effect a PPG measurement by illuminating skin of the subject with at least two distinct wavelengths of light and determining relative absorbance at each of the wavelengths; b) a dynamic light scattering measurement (DLS) device configured to effect a DLS measurement of the subject to rheologically measure a pulse parameter of the subject; and c) electronic circuitry configured to: i) temporally correlating the results of the PPG and DLS measurements; and ii) accordance with the temporal correlation between the PPG and DLS measurements, assessing value(s) of the one or more light-absorption related blood analyte concentration parameter(s). | 04-16-2015 |
20150133755 | MULTIPLE WAVELENGTH SENSOR EMITTERS - A physiological sensor has light emitting sources, each activated by addressing at least one row and at least one column of an electrical grid. The light emitting sources are capable of transmitting light of multiple wavelengths and a detector is responsive to the transmitted light after attenuation by body tissue. | 05-14-2015 |
20150133756 | SYSTEMS AND METHODS FOR DETERMINING PHYSIOLOGICAL CHARACTERISTICS OF A PATIENT USING PULSE OXIMETRY - Methods, systems and related apparatus are provided to enable an electronic device to operate an external sensor comprising one or more emitters for emitting electromagnetic radiation of two different wavelengths and a detector for generating a response signal based on received electromagnetic radiation of the two different wavelengths connectable to an audio interface by applying a harmonic driving signal to a first contact and a second contact of the audio interface for driving the emitters of the external sensor, receiving the response signal at a third contact of the audio interface, demodulating and demultiplexing the response signal into a first wavelength response signal and a second wavelength response signal, analyzing the first and second wavelength response signals to determine one or more vital signs, and outputting the determined one or more vital signs. | 05-14-2015 |
20150141781 | SINE SATURATION TRANSFORM - A transform for determining a physiological measurement is disclosed. The transform determines a basis function index from a physiological signal obtained through a physiological sensor. A basis function waveform is generated based on basis function index. The basis function waveform is then used to determine an optimized basis function waveform. The optimized basis function waveform is used to calculate a physiological measurement. | 05-21-2015 |
20150297433 | MEDICAL PROCEDURE TABLE WITH INTEGRAL PORTS AND WIRES FOR ELECTROCARDIOGRAPHY - A medical procedure table has sensor panels with ports on the top and/or sides of the table for the shorter cables to be attached to the patient and then plugged into the ports of the panels of the table. An equipment panel in the support structure (e.g., pedestal) of the table includes ports for connection to monitoring equipment and drivers. Cables in the table top couple the ports of the sensor panel to corresponding ports of the equipment panel, thus completing a circuit for ECG, SPO | 10-22-2015 |
20150305683 | CONTINUOUS TRANSDERMAL MONITORING SYSTEM AND METHOD - Various embodiments of methods and systems for continuous transdermal monitoring (“CTM”) are disclosed. One exemplary method for CTM begins by monitoring an output signal from an accelerometer. The accelerometer output signal may indicate acceleration and deceleration of a body part of a user, such as the user's wrist. Based on the accelerometer output signal, it may be determined that the body part of the user has decelerated to a minimum, e.g., substantially zero. With a determination that the body part has decelerated to the minimum, e.g., substantially zero, or has not accelerated beyond the minimum, e.g., substantially zero, the method may determine a reading from a pulse oximeter associated with the accelerometer. Advantageously, the pulse oximetry reading, or a reading from other sensors associated with the accelerometer, may be optimally accurate as motion artifact may be minimized. The pulse oximetry reading may be recorded for later query and/or rendered for the benefit of the user. | 10-29-2015 |
20150313519 | MOTION ENERGY HARVESTING WITH WIRELESS SENSORS - A system and method for generating power when one or more motion sensitive structures are moved. The system may include one or more sensing components which, acting alone or in combination, are capable of generating data related to one or more physiological parameters. The system may also include wireless communication circuitry capable of wirelessly transmitting the data related to the one or more physiological parameters. Furthermore, at least one of the one or more sensing components or the wireless communication circuitry may be at least partially powered, directly or indirectly, by the one or more motion sensitive structures. | 11-05-2015 |
20150320360 | SELECTION OF FILTER PARAMETERS BASED ON SIGNAL QUALITY - Methods and devices for reducing noise effects in a system for measuring a physiological parameter, including receiving an input signal, obtaining an assessment of the signal quality of the input signal, selecting coefficients for a digital filter using the assessment of signal quality; and filtering the input signal using the digital filter, without comparing the filter's output signal with the input signal. | 11-12-2015 |
20150320363 | DEVICE, SYSTEM AND METHOD FOR EXTRACTING PHYSIOLOGICAL INFORMATION - A device for extracting physiological information indicative of at least one vital sign of a subject from detected electromagnetic radiation transmitted through or reflected from a subject comprises an input interface for receiving a data stream of detection data derived from detected electromagnetic radiation transmitted through or reflected from a skin region of a subject. The detection data comprises wavelength-dependent reflection or transmission information in at least two signal channels representative of respective wavelength portions. A signal mixer dynamically mixes the at least two signal channels into at least one mixed signal. A processor derives physiological information indicative of at least one vital sign from the at least one mixed signal, and a controller controls the signal mixer to limit the relative contributions of the at least two signal channels mixed into at least one mixed signal and/or the rate-of-change at which said relative contributions are allowed to dynamically change. | 11-12-2015 |
20150327809 | BIOLOGICAL INFORMATION MEASURING DEVICE, MEASURING UNIT OF BIOLOGICAL INFORMATION MEASURING DEVICE, FINGER ACCOMMODATING UNIT OF BIOLOGICAL INFORMATION MEASURING DEVICE, AND PULSE OXYMETER - A biological information measuring device includes: a finger accommodating unit to be attached to a finger of a living subject; and a measuring unit that can be connected to the finger accommodating unit, and includes a light emitting unit and a light receiving unit that face each other, with the region in which the finger is to be placed in the finger accommodating unit being interposed between the light emitting unit and the light receiving unit. After formed as components independent of each other, the finger accommodating unit and the measuring unit are connected. The basic electrical components (such as the light emitting unit, the light receiving unit, and an electrical circuit) related to the measuring function of the biological information measuring device are complete in the measuring unit. | 11-19-2015 |
20150335274 | PHYSIOLOGICAL SIGNALS DETECTION DEVICE - A physiological signals detection device has a light source connecting to a control unit, a light detector and a processing unit. The light detector has a pixel sensor array including multiple light sensing elements. The light source emits light through a lens to the human body to generate reflected light. The light detector receives the reflected light to generate a sensing signal. Since the light sensing elements respectively receive different reflected light from different directions, the light sensing elements receiving reflected light from the noise are easily selected and eliminated from calculating the physiology value. Therefore, the calculated physiology value is more accurate. | 11-26-2015 |
20150335283 | Electrocardiogram Watch Clasp - A device measuring an electrical activity of a heart and being wearable on a body part of a user. The device comprises a strap configurable to be fitted over the body part, and having an interior surface contacting the body part when worn by the user, and an exterior surface facing away from the body part. The device also includes a first sensor that is disposed on the interior surface. The first sensor is configurable to be in contact with the body part. The device also includes a clasp having a second sensor that is electrically insulated from the first sensor. The first sensor and the second sensor receive data indicative of an electrocardiogram (ECG) signal of the user when the clasp holding the strap over the body part contacts a different body part of the user. | 11-26-2015 |
20150335293 | SYSTEMS AND TECHNIQUES TO DETERMINE WHETHER A SIGNAL IS ASSOCIATED WITH A PERIODIC BIOLOGIC FUNCTION - A system includes a first light source configured to emit light within a first wavelength light band, and a second light source configured to emit light within a second wavelength light band, where the first wavelength light band and the second wavelength light band are each reflected differently by biologic material (e.g., blood). The system also includes a light sensor configured to detect light within the first wavelength light band and the second wavelength light band and generate a first signal representative of received light intensity within the first wavelength light band and a second signal representative of received light intensity within the second wavelength light band. The system further includes circuitry configured to correlate the first signal and the second signal to determine whether at least one of the first signal or the second signal is associated with a periodic biologic function. | 11-26-2015 |
20150351697 | VARIABLE INDICATION ESTIMATOR - A variable indication estimator which determines an output value representative of a set of input data. For example, the estimator can reduce input data to estimates of a desired signal, select a time, and determine an output value from the estimates and the time. In one embodiment, the time is selected using one or more adjustable signal confidence parameters determine where along the estimates the output value will be computed. By varying the parameters, the characteristics of the output value are variable. For example, when input signal confidence is low, the parameters are adjusted so that the output value is a smoothed representation of the input signal. When input signal confidence is high, the parameters are adjusted so that the output value has a faster and more accurate response to the input signal. | 12-10-2015 |
20150366472 | PATIENT MONITOR FOR MONITORING MICROCIRCULATION - A patient monitor capable of measuring microcirculation at a tissue site includes a light source, a beam splitter, a photodetector and a patient monitor. Light emitted from the light source is split into a reference arm and a sample arm. The light in the sample arm is directed at a tissue site, such as an eyelid. The reflected light from the tissue site is interfered with the light from the reference arm. The photodetector measures the interference of the light from both the sample arm and the reference arm. The patient monitor uses the measurements from the photodetector to calculate the oxygen saturation at the tissue site and monitor the microcirculation at the tissue site. | 12-24-2015 |
20150366511 | METHOD OF ANALYZING AND PROCESSING SIGNALS - According to embodiments, a system for processing a physiological signals is disclosed. The system may comprise a sensor for generating the physiological signal. The system may comprise a processor configured to receive and process the physiological signal in order to improve interpretation and subsequent analysis of the physiological signal. The processor may be configured to generate a wavelet transform based on the physiological signal. The processor may be configured to determine phase values corresponding to the subject's respiration based on the wavelet transform. The processor may be configured to generate a sinusoidal waveform that is representative of the subject's breathing based on the phase values. The system may also comprise a display device configured to display the sinusoidal waveform. | 12-24-2015 |
20160007863 | System for Providing Continuous Systolic Blood Pressure Measurement to Maintain Permissive Hypotension | 01-14-2016 |
20160007929 | BIOMETRIC DETECTION MODULE WITH DENOISING FUNCTION AND BIOMETRIC DETECTION METHOD THEREOF | 01-14-2016 |
20160022147 | METHOD AND DEVICE FOR MONITORING VITAL FUNCTIONS - A method for monitoring vital parameters of a living being, wherein broad-band light is beamed into the tissue of a living being, a spectrum of the beamed-in light is recorded, and absorption is evaluated. At least one first parameter is determined on the basis of the absorption values of a first spectral range, and at least one second parameter is determined on the basis of the absorption values of a second spectral range. The first parameter is compared to the second parameter, and at least one vital parameter is determined with the aid of this comparison. | 01-28-2016 |
20160022181 | MULTISPECTRAL MEDICAL IMAGING DEVICES AND METHODS THEREOF - A multispectral medical imaging device includes illumination devices arranged to illuminate target tissue. The illumination devices emit light of different near-infrared wavelength bands. The device further includes an objective lens, a near-infrared image sensor positioned to capture image frames reflected from the target tissue, and a visible-light image sensor positioned to capture image frames reflected from the target tissue. A processor is configured to modulate near-infrared light output of the plurality of illumination devices to illuminate the target tissue. The processor is further configured to determine reflectance intensities from the image frames captured by the near-infrared image sensor and to generate a dynamic tissue oxygen saturation map of the target tissue using the reflectance intensities. The device further includes an output device connected to the processor for displaying the dynamic tissue oxygen saturation map. | 01-28-2016 |
20160022183 | PULSE OXIMETER SENSOR WITH REVERSIBLE CONNECTOR ASSEMBLY - The invention provides a pulse oximetry sensor for attachment to the lower half of the palm or the ulnar edge of the palm. The sensor may be portable, untethered and in some instances, disposable. The features of the sensor make it effective in stable, chronic or emergency medical settings. | 01-28-2016 |
20160022223 | MULTI-MODAL DEPTH-RESOLVED TISSUE STATUS MONITOR - The properties inside a human tissue as well as how those properties vary over time can include information of great importance to a healthcare provider. In some cases, the tissue of interest may not be easily accessible, as a tissue that is under a cast or beneath a bandage, or may be beneath a layer of skin that makes it difficult to evaluate the tissue visually or in a non-invasive manner. The systems and methods described herein relate to monitoring tissue at a plurality of depths. | 01-28-2016 |
20160029907 | Radial Check Device - A radial check device and methods are provided for accessing ulnar and/or radial flow and producing documentation of such assessment. | 02-04-2016 |
20160029922 | SAMPLING INTERFACES - A tubeless patient interface including a grasping member configured to grasp a patient's nose or tooth; and a miniature CO | 02-04-2016 |
20160029932 | PHYSIOLOGICAL MEASUREMENT COMMUNICATIONS ADAPTER - A sensor interface is configured to receive a sensor signal. A transmitter generates a transmit signal. A receiver receives the signal corresponding to the transmit signal. Further, a monitor interface is configured to communicate a waveform to the monitor so that measurements derived by the monitor from the waveform are generally equivalent to measurements derivable from the sensor signal. | 02-04-2016 |
20160038097 | DETERMINATION OF A HEMODYNAMIC PARAMETER - Embodiments of the disclosure are directed to methods, apparatuses, and computer program products for determining a hemodynamic parameter. An exemplary method comprises: receiving data associated with at least one heart beat; calculating a first standard deviation for at least a portion of the data; interpolating a second standard deviation for at least a second portion of the data; and determining the hemodynamic parameter based on the first standard deviation and the second standard deviation. | 02-11-2016 |
20160051153 | RADIO FREQUENCY IDENTIFICATION (RFID) ENABLED WIRELESS HEART RATE MONITORING SYSTEM - Devices and systems for continuous monitoring of the heart rate of a patient diagnosed with or at risk of heart diseases. Wireless communication technologies such as radio frequency identification (RFID), Bluetooth and WiFi are integrated into a heart rate monitoring device to connect it to a communication device, the patient's database at a healthcare institution and to trigger an automatic call for emergency services through the communication device when emergency medical attention is needed. | 02-25-2016 |
20160058350 | SYSTEM AND METHOD FOR CONTROLLING ONE OR BOTH OF SENSOR FUNCTIONALITY AND DATA ACCESS BASED ON BIOMETRICS DATA - The present disclosure is generally directed to maintaining sensor quality standards and/or preventing improper remanufacture of sensors, such as pulse oximetry sensors. Present embodiments may include a system that includes a biometric measurement device configured to obtain biometric data of a patient and a pulse oximetry sensor configured to obtain physiological data from a patient. The pulse oximetry sensor may include a memory device configured to receive and to store biometric data obtained during an initial reading of the patient by the biometric measurement device. The system may include a processor configured to obtain subsequent biometric data from the biometric device, to compare the subsequent biometric data to the biometric data obtained during the initial reading, and to prevent the pulse oximetry sensor from obtaining physiological data if the subsequent biometric data does not correspond to the biometric data obtained during the initial reading. | 03-03-2016 |
20160058374 | ELECTRONIC APPARATUS AND CONTROL METHOD - According to one embodiment, a wearable electronic apparatus detects movement of a human body wearing the apparatus. The apparatus causes a first number of light emitters to emit light when a magnitude of the detected movement is less than a first value. The first number of light emitters is among a plurality of light emitters which emit light having different wavelengths, in which the light are received by a light receiver to obtain physiological information. The apparatus causes a second number greater than the first number of light emitters among the plurality of light emitters to emit light when the magnitude of the detected movement is greater than or equal to the first value. | 03-03-2016 |
20160058395 | MEASUREMENT SYSTEM AND METHOD FOR MEASURING PARAMETERS IN A BODY TISSUE - A measurement system and method for measuring at least one parameter in a body tissue comprise at least one measurement device to be applied to the body, an optical unit for emitting light waves, wherein at least one wavelength of the light waves lies in the region of the absorption of a body parameter, at least one light guide between the optical unit and the measurement device in order to transmit light waves, and an evaluation unit for evaluating measurement waves. Light waves emitted by the optical unit can be beamed into an optical measurement volume in the body tissue by means of the measurement device, and measurement waves received by the measurement device from the measurement volume can be transmitted from the body tissue to the evaluation unit. The evaluation unit comprises a transformation algorithm, which transforms pulsatility of a body parameter measured in the measurement volume into a parameter of the pressure in the body tissue, wherein the body parameter is measured by determining the absorption of the light waves. | 03-03-2016 |
20160066847 | WEARABLE PHYSIOLOGY MONITOR COMPUTER APPARATUS, SYSTEMS, AND RELATED METHODS - A computer-implemented method of detecting physiological attributes of a wearer of a computerized wearable device having one or more sensors comprises (1) using the information from the one or more sensors to assess the physiology of the wearer; and (2) notifying the wearer of the wearer's physiology. In various embodiments, the method involves using the wearable device to determine the wearer's current posture, balance, alertness, and/or physical state and comparing the current posture, balance, alertness and/or physical state to at least one baseline measurement. For example, the system may measure a baseline posture to determine when the wearer's current posture deviates from the baseline posture, and notify the wearer so that the wearer may improve his or her posture. In other embodiments, the computerized wearable device may detect one or more of the wearer's physiological characteristics (e.g., oxygen levels, pulse rate, pupil size, etc.) and determine the wearer's alertness level. | 03-10-2016 |
20160067499 | PULSE DETECTION USING PATIENT PHYSIOLOGICAL SIGNALS - The presence of a return of spontaneous circulation (ROSC) in a patient is determined by evaluating physiological signals in the patient. In one embodiment, methods and devices device evaluate optical characteristics of light transmitted into a patient to ascertain physiological signals, such as pulsatile changes in general blood volume proximate a light detector module. Using these features, the methods and devices determine whether pulsatile blood flow is present in the patient and also whether the patient has ROSC based on whether the pulsatile blood flow is present. Some examples of the methods and devices indicate that the patient has ROSC if the patient's pulsatile blood flow is detected after defibrillation therapy has been delivered to the patient. Other example methods and devices either prompt a user to deliver additional defibrillation therapy to a patient or automatically deliver additional defibrillation therapy to a patient if the patient does not have ROSC. | 03-10-2016 |
20160073954 | WRISTWATCH INCLUDING AN INTEGRATED PULSE OXIMETER OR OTHER MODULES THAT SENSE PHYSIOLOGICAL DATA - A wristwatch includes a case containing electronic components of the wristwatch. An optoelectronic module including at least one light emitting element and at least one light sensing element is disposed within the case or within a fastener for the wristwatch. The optoelectronic module is operable to obtain physiological data of a person wearing the wristwatch by using the light emitting element and the light sensing element. | 03-17-2016 |
20160089040 | BIOLOGICAL INFORMATION DETECTING DEVICE - A biological information detecting device includes: a pulse wave information measuring unit that measures pulse wave information of a subject; an event determination unit that determines whether or not a syncope event including a sign of syncope and development of syncope has occurred in the subject based on the measured pulse wave information; and a control unit that, when it is determined that the syncope event has occurred, performs at least one of storage processing of the pulse wave information at the time of the occurrence of the syncope event and the syncope event notification processing. | 03-31-2016 |
20160095543 | PULSE OXIMETRY SYSTEM WITH ELECTRICAL DECOUPLING CIRCUITRY - A pulse oximetry system for reducing the risk of electric shock to a medical patient can include physiological sensors, at least one of which has a light emitter that can impinge light on body tissue of a living patient and a detector responsive to the light after attenuation by the body tissue. The detector can generate a signal indicative of a physiological characteristic of the living patient. The pulse oximetry system may also include a splitter cable that can connect the physiological sensors to a physiological monitor. The splitter cable may have a plurality of cable sections each including one or more electrical conductors that can interface with one of the physiological sensors. One or more decoupling circuits may be disposed in the splitter cable, which can be in communication with selected ones of the electrical conductors. The one or more decoupling circuits can electrically decouple the physiological sensors. | 04-07-2016 |
20160095554 | PERIPHERAL PHYSIOLOGY INSPECTION APPARATUS AND PERIPHERAL AUXILIARY APPARATUS OF SMART PHONE - A peripheral physiology inspection apparatus of smart phone is connected with a smart phone having a TRRS socket for performing a physiology inspection. The peripheral physiology inspection apparatus includes: an inspection main body including a first physiology sensing unit; a plurality of signal transmission units; and a TRRS terminal for connecting with the inspection main body via the signal transmission units. The TRRS terminal is corresponding to the TRRS socket for allowing the inspection main body to be electrically connected to the smart phone, thereby enabling the smart phone to analyze and process physiology signals inspected by and delivered from the inspection main body. | 04-07-2016 |
20160100808 | SYSTEM AND METHOD FOR RESPIRATORY SYSTEM ASSESSMENT - A system and method comprise sampling a rate of airflow in a patients lungs during inspiration and/or expiration of the patient and outputting a corresponding airflow signal. Respiratory muscles signals of the patient are simultaneously sampled with the sampling of the airflow and outputted as a corresponding activity signal. The airflow signal and the activity signal are simultaneously displayed wherein a comparison of at least the airflow signal and the activity signal indicates physical properties of a respiratory system of the patient. | 04-14-2016 |
20160106372 | SYSTEM AND METHOD FOR MONITORING AUTOREGULATION - A method for monitoring autoregulation includes, using a processor, receiving a blood pressure signal and an oxygen saturation signal from a patient. The method also includes determining a linear correlation between the blood pressure signal and the oxygen saturation signal and determining a significance value associated with the linear correlation. The method further includes providing a signal indicative of the patient's autoregulation status to an output device based on the linear correlation and the significance value. | 04-21-2016 |
20160113527 | PATIENT MONITOR FOR DETERMINING MICROCIRCULATION STATE - As placement of a physiological monitoring sensor is typically at a sensor site located at an extremity of the body, the state of microcirculation, such as whether vessels are blocked or open, can have a significant effect on the readings at the sensor site. It is therefore desirable to provide a patient monitor and/or physiological monitoring sensor capable of distinguishing the microcirculation state of blood vessels. In some embodiments, the patient monitor and/or sensor provide a warning and/or compensates a measurement based on the microcirculation state. In some embodiments, a microcirculation determination process implementable by the patient monitor and/or sensor is used to determine the state of microcirculation of the patient. | 04-28-2016 |
20160113563 | TESTICULAR TORSION SENSING APPARATUS AND METHOD THEREOF - The present invention provides an apparatus for sensing a status of testicular torsion and a method thereof, and is related to technical fields of measuring human pulse, heart rate, blood pressure, or blood flow, for sensing the status of a test area in a user. The apparatus comprises a sensor configured for projecting a specific wavelength light source to the test area and receiving a reflected light from the test area, for obtaining a pulse information and an oxygen saturation information on the test area; a comparing unit configured for determining a status of blood flow in the test area and a corresponding status of testicular torsion, according to the pulse information and the oxygen saturation information; and a display unit for displaying the testicular torsion status. | 04-28-2016 |
20160120464 | Discrimination of cheyne-stokes breathing patterns by use of oximetry signals - Methods and apparatus provide Cheyne-Stokes respiration (“CSR”) detection based on a blood gas measurements such as oximetry. In some embodiments, a duration, such as a mean duration of contiguous periods of changing saturation or re-saturation occurring in an epoch taken from a processed oximetry signal, is determined. An occurrence of CSR may be detected from a comparison of the duration and a threshold derived to differentiate saturation changes due to CSR respiration and saturation changes due to obstructive sleep apnea. The threshold may be a discriminant function derived as a classifier by an automated training method. The discriminant function may be further implemented to characterize the epoch for CSR based on a frequency analysis of the oximetry data. Distance from the discriminant function may be utilized to generate probability values for the CSR detection. | 05-05-2016 |
20160120484 | PULSE OXIMETERWITH VOICE BROADCAST FUNCTION - A pulse oximeter with a voice broadcast function for voice-broadcasting pulse rate-related information and blood oxygen level-related information is introduced. The pulse oximeter includes a pulse blood oxygen sensor, a signal processing circuit, and a loudspeaker. The pulse blood oxygen sensor senses a user's pulse rate-related information and blood oxygen level-related information and sends a physiological signal carrying the pulse rate-related information and the blood oxygen level-related information. The signal processing circuit is electrically connected to the pulse blood oxygen sensor and adapted to receive and convert the physiological signal into the pulse rate-related information and the blood oxygen level-related information and send the pulse rate-related information and the blood oxygen level-related information. The loudspeaker is electrically connected to the signal processing circuit and adapted to receive and voice-broadcast the pulse rate-related information and the blood oxygen level-related information. | 05-05-2016 |
20160140307 | MEDICAL APPARATUS WITH SELECTIVELY ENABLED FEATURES - A medical system includes a medical apparatus, a computer, a user input device, and at least one feature in communication with and controlled by the computer. The computer is in communication with the user input device, which is configured and arranged to allow a user to purchase the use of the feature. The computer is configured to enable the use of the feature after the user purchases use of the feature. | 05-19-2016 |
20160143566 | Circuitry to Allow Low Current Operation of a Device Capable of Determining a Blood Property - Systems, methods, and devices of the various embodiments provide a device capable of determining a blood property based at least in part on the measurement of the amount of light received by a receiver circuit with a limited current capacity by charging a capacitor with a low voltage power supply and intermittently discharging the capacitor through a light emitting diode. In some embodiments the device may be a pulse oximeter capable of taking blood oxygen readings. In some embodiments the device may be a heart rate monitor to determine a heart rate based on an amount of light passed through tissue. The various embodiments may enable pulse oximeters and/or heart rate monitors to be incorporated into small unobtrusive body patches, while enabling the pulse oximeters to operate from a power output equivalent to that of a small coin cell battery or printed cell battery. | 05-26-2016 |
20160155309 | ADAPTIVE ALARM FOR PHYSIOLOGICAL MONITORING | 06-02-2016 |
20160166153 | OPTICAL COMMUNICATION WITH OPTICAL SENSORS | 06-16-2016 |
20160166157 | Methods And Apparatus For Assessing Vascular Health | 06-16-2016 |
20160183885 | Method and Apparatus for Predicting a Need for a Blood Transfusion - A method is provided for predicting that a patient will require a blood transfusion during a treatment. The method includes obtaining, on a processor, first data that indicates values for one or more parameters of a characteristic of a continuous photoplethysmographic (PPG) waveform collected during the treatment. The method further includes applying, on the processor, coefficients to the values for the one or more parameters. The method further includes determining, on the processor, second data that indicates a prediction that the patient will require the blood transfusion during the treatment based on applying the coefficients to the values for the one or more parameters. An apparatus is also provided for predicting that the patient will require the blood transfusion during the treatment. | 06-30-2016 |
20160192868 | POSITIONING A MEDICAL DEVICE BASED ON OXYGEN SATURATION MEASUREMENTS | 07-07-2016 |
20160192869 | NON-INVASIVE PHYSIOLOGICAL SENSOR COVER | 07-07-2016 |
20160249867 | SYSTEMS, METHODS, COMPONENTS, AND SOFTWARE FOR MONITORING AND NOTIFICATION OF VITAL SIGN CHANGES | 09-01-2016 |
20170231566 | TISSUE INTERFACE | 08-17-2017 |
20180020962 | COMPACT LOW-COST FIBERLESS DIFFUSE SPECKLE CONTRAST FLOW-OXIMETER | 01-25-2018 |