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Respiratory

Subclass of:

600 - Surgery

600300000 - DIAGNOSTIC TESTING

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
600532000 Qualitative or quantitative analysis of breath component 169
600538000 Measuring breath flow or lung capacity 110
600534000 Detecting body movement attending breathing 78
600543000 Breath collection 24
600533000 Measuring respiratory flow impedance or lung elasticity 21
600537000 Thermistor-type transducer generating electric signal in response to breath flow 11
600531000 Measuring metabolic rate by breath test 3
20100036272METABOLIC MEASURE SYSTEM INCLUDING A MULTIPLE FUNCTION AIRWAY ADAPTER02-11-2010
20110270113MEASUREMENT DEVICE AND METHOD FOR ANALYZING A SAMPLE GAS BY INFRARED ABSORPTION SPECTROSCOPY - A measurement device and a method for analyzing a sample gas by infrared absorption spectroscopy are described. The measurement device comprises: a measurement chamber with the sample gas to be analyzed, a laser being arranged in relation to the measurement chamber such that light being emitted from the laser radiates through the measurement chamber, a detection device detecting the light being emitted from the laser and radiated through the measurement chamber, and an evaluation unit evaluating signals generated by the detection device regarding a light absorption occurred in the measurement chamber. Provision is made that the laser is a narrowband emitting laser, the line width of which is smaller or equal to the width of an infrared absorption line to be measured of the sample gas, the laser is designed and arranged such that the laser frequency is varied periodically within a defined spectral range, wherein the laser frequency and its variation are chosen such that at least one infrared absorption line to be measured of the sample gas lies in the defined spectral range, and the detection device is designed and arranged such that it detects the light being emitted from the laser and radiated through the measurement chamber in such a time-resolved manner that the light absorption can be determined frequency-resolved within the defined spectral range, wherein the detection device carries out a single absorption measurement within 1011-03-2011
20130150746METABOLIC ANALYZER - A method for weight and/or fitness management using a metabolic analyzer that measures metabolic data including oxygen and carbon dioxide. The metabolic analyzer includes integrated collection-detection sensors with for high efficiency and collection, high specificity and simultaneous detection of at least two metabolic signatures, including at least oxygen and carbon dioxide, in breath via a porous membrane with high density of sensing binding sites, where the porous membrane includes sensing materials such that the sensing binding sites are specific to the metabolic signatures, and change colors upon interactions with the metabolic signatures. Weight of the subject is measured using a weight measurement device and a recommendation for food intake and/or physical activity is based on at least the readings of the metabolic analyzer and weight of the subject.06-13-2013
600530000 Halitosis detection 1
20080243015Visual Indicating Device for Bad Breath - The invention provides a breath testing device which includes a visual indicating agent which changes color in the presence of an odor associated with bad breath, such as sulfur and ammonia odors. An example of the visual indicating agent is 4,4′-bis(dimethylamino)-benzhydrol (Michler's hydrol or BDMB) and related dyes having a similar chemical structure. The indicating agent is applied to a substrate which is then inserted into a tube or straw, or which covers one end of a straw. When a user with bad breath blows into the tube or straw, the indicating agent will change color. The breath testing devices provide a quick and affordable means for a user to test their breath, and they may be packaged in discreet, pocket-sized dispensers which can be carried in a pocket or purse.10-02-2008
Entries
DocumentTitleDate
20110201955Apparatus and Method for Detecting Lung Sounds Using an Implanted Device - Adventitious lung sounds indicative of lung congestion are detected using an implantable sensor. The sensor is adapted to be positioned adjacent to a pulmonary system and to output signals indicative of lung sounds in response to pulmonary system activity. A controller receives the signals and processes the signals to detect the presence of adventitious lung sounds. A respiratory cycle sensor operating in conjunction with the lung-sound sensor enables classification of an adventitious lung sound according to its time occurrence within the respiratory cycle. Posture sensing in conjunction with lung-sound sensing provides valuable additional information as to the severity of the lung congestion.08-18-2011
20090171231METHOD OF DETERMINING LUNG CONDITION INDICATORS - A method and a microprocessor controlled device for use in medical evaluation of the pulmonary system. The method and device incorporate two different non invasive evaluative techniques. Passive auscultation provides indicators of lung condition. Active auscultation, a different evaluative technique, provides information or indications generally not available or provided from passive auscultation. Combining the information from both techniques greatly improves the ability to provide effective medical treatment.07-02-2009
20080319333Apparatus and Method for Breathing Pattern Determination Using a Non-Contact Microphone - A method is provided for analyzing respiration of a subject (12-25-2008
20130079657SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION FROM A PHOTOPLETHYSMOGRAPH - A signal representing physiological information may include information related to respiration. A patient monitoring system may utilize a wavelet transform to generate a scalogram from the signal. A threshold for the scalogram may be calculated, and scalogram values may be compared to the threshold. One of the scales meeting the threshold may be selected as representing respiration information such as respiration rate. The respiration information may be determined based on the selected scale.03-28-2013
20130079656SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION FROM A PHOTOPLETHYSMOGRAPH - A signal representing physiological information may include information related to respiration. A patient monitoring system may generate a plurality of autocorrelation sequences from the signal and combine the autocorrelation sequences to generate a combined autocorrelation sequence. The combined autocorrelation sequence may be analyzed to identify one or more peaks that may correspond to respiration information. Respiration information such as respiration rate may be determined based on the one or more peaks.03-28-2013
20130041278METHOD FOR DIAGNOSIS OF DISEASES VIA ELECTRONIC STETHOSCOPES - A method for diagnosis of diseases adopted on an electronic stethoscope which includes at least two sound receiving portions, a noise control portion, a processing portion, a data portion and an output portion. The method includes: first, the sound receiving portions receive sound signals issued from a patient's lungs included external noises; next, the sound signals are sent to the noise control portion which eliminates the external noise, and the processing portion to be overlapped and intensified; then characteristic values are retrieved from the sound signals to be compared with disease sound signal data in the data portion; finally the output portion outputs a diseases judgment result. Thus the electronic stethoscope can perform automatic interpretation of diseases to reduce human erroneous diagnostic judgment. Users also can get preliminary understanding of their body conditions when doctors are absent.02-14-2013
20130041277METHOD FOR EXTRACTING THE FEATURE OF AN ABDOMINAL BREATHING AND A SYSTEM USING THE SAME - A method for extracting the feature of an abdominal breathing is disclosed, capable of extracting the feature of an abdominal breathing, without the requirement of a standard model of an abdominal breathing and the execution of a learning process being executed prior to the method for extracting the feature of an abdominal breathing. By means of computing a plurality of intrinsic mode functions corresponding to the abdominal breathing signal received, an Euler angle function and an instantaneous frequency function of each of the plurality of intrinsic mode functions, and comparing the plurality of instantaneous frequency function with a pre-determined zero-point threshold region, the method for extracting the feature of an abdominal breathing defines one of the plurality of instantaneous frequency function as an abdominal breathing feature function, which contains the feature of the abdominal breathing. In this way, the feature of an abdominal breathing is extracted.02-14-2013
20090156950MULTI-PARAMETER BASED DIAGNOSIS OF LUNG DISEASE - A method and apparatus by which deceases are identified uses computer analysis of sound signals that are picked up from various locations on the chest walls of a subject by a modified stethoscope. The modification includes a small microphone in one of the hoses of the stethoscope. Signals from the microphone are input to a computer such as a personal computer or PC for processing. The computer extracts from these signals features which are dominant for particular diseases. A classifier classifies these features, determines if the lungs are diseased, and identifies the disease.06-18-2009
20090124917ADVANCED PATIENT MANAGEMENT WITH ENVIRONMENTAL DATA - Systems, devices and methods for using environmental data to manage health care are disclosed. One aspect is an advanced patient management system. In various embodiments, the system includes at least one implantable medical device (IMD) to acquire at least one IMD parameter indicative of patient wellness, means to acquire at least one environmental parameter from at least one external source, and means to correlate the at least one parameter indicative of patient wellness and the at least one environmental parameter to assist with patient health care decisions. Other aspects and embodiments are provided herein.05-14-2009
20130046197DOCKING STATION FOR PATIENT BEDSIDE MONITORING UNITS - A docking apparatus comprises a processor, a battery charging module, a storage device, and one or more ports, which are configured to couple with patient monitoring units. Each patient monitoring unit is operable to monitor at least one physiological parameter of a patient. The battery charging module charges the patient monitoring units through the ports. The storage device stores data received from the patient monitoring units through the ports. The processor transmits updates to the patient monitoring units through the ports. The ports may comprise sockets that receive plugs from cables of the patient monitoring units. The docking apparatus may comprise a plurality of separate dock housings associated with corresponding patient monitoring units. These dock housings being joined together in a daisy chain. The docking apparatus may also include a plurality of docking recesses in a single housing, with each docking recess being associated with a corresponding patient monitoring unit.02-21-2013
20130090567PHYSIOLOGICAL ACOUSTIC MONITORING SYSTEM - A physiological acoustic monitoring system receives physiological data from an acoustic sensor, down-samples the data to generate raw audio of breathing sounds and compresses the raw audio. The acoustic monitoring system has an acoustic sensor signal responsive to tracheal sounds in a person. An A/D converter is responsive to the sensor signal so as to generate breathing sound data. A decimation filter and mixer down-samples the breathing sound data to raw audio data. A coder/compressor generates compressed audio data from the raw audio data. A decoder/decompressor decodes and decompresses the compressed audio data into decompressed audio data. The decompressed audio data is utilized to generate respiration-related parameters in real-time. The compressed audio data is stored and retrieved so as to generate respiration-related parameters in non-real-time. The real-time and non-real-time parameters are compared to verify matching results across multiple monitors.04-11-2013
20100268105System And Method For Monitoring Breathing - A system for monitoring the breathing status of a patient comprises a first temperature sensor and a second temperature sensor. The first temperature sensor is arranged to measure the temperature of the breathing gas of a patient. The second temperature sensor is arranged to measure an ambient temperature of the patient's surroundings. A controller is included, wherein the controller is programmed to determine a plurality of breathing-gas temperatures over time by way of a first signal received from the first temperature sensor and at least one ambient temperature using a second signal received from the second temperature sensor. The controller is programmed to analyze the plurality of breathing-gas temperatures and the at least one ambient temperature to determine a breathing status of the patient. The present invention may be embodied as a method for monitoring the breathing status of a patient.10-21-2010
20110021941SYSTEMS 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.01-27-2011
20090234241RECORDING MEDIUM, DEVICE, AND METHOD FOR SLEEP APNEA DETECTION - A device for sleep apnea detection, includes an external sound recorder that records external sound in environment, a sound/silence determining unit that determines whether an audible sound or no sound is found in the external sound recorded in the external sound recorder, a breathing pace analyzing unit that analyzes, using information of intervals of the audible sound and no sound found by the sound/silence determining unit and the external sound, a breathing pace indicating a cycle of a breathing estimated interval during which breathing is estimated, and an apnea interval extracting unit that extracts a silent interval within the breathing estimated interval based on the breathing pace analyzed by the breathing pace analyzing unit.09-17-2009
20090234240Respiration as a Trigger for Therapy Optimization - Changes in patient status are assessed based at least in part on respiration parameters. A user can make selections regarding alert criteria options to be used in assessing patient status. Respiration is implantably sensed and respiration data is stored by an implantable device. A respiration parameter, such as respiration rate, is measured from the respiration data. The change in patient status is assessed by comparing the respiration parameter to the configured alert criteria. If the comparison of the respiration parameter and the configured alert criteria indicates a significant change in patient status, an alert signal is generated.09-17-2009
20090012416MONITORING LUNG FLUID STATUS USING THE CARDIAC COMPONENT OF A THORACIC IMPEDANCE-INDICATING SIGNAL - This patent document describes, among other things, systems and methods for monitoring lung fluid status, such as monitoring the presence or absence of pulmonary edema, in a subject using information about the cardiac impedance-indicating component of a measured impedance-indicating signal. In various examples, an amplitude or contribution change over multiple cardiac cycles of the cardiac impedance-indicating component is used to compute and provide a lung status indication. In various examples, a decreasing amplitude or contribution trend of the cardiac impedance-indicating component signifies an increasing amount of fluid in the subject's lungs, as a greater portion of an injected thoracic impedance measurement current formerly traversing the heart is rerouted through the lung due to the less resistance path created by the fluid accumulation therein. In another example, measurements of the impedance-indicating signal, and thus the cardiac impedance-indicating component, are taken at one or a combination of end-inspiration or end-expiration.01-08-2009
20100087748DEVICE AND METHOD FOR SENSING RESPIRATION OF A LIVING BEING - A description is given of a device for sensing respiration of a living being, the device including: an active transmitter configured to generate a magnetic or electromagnetic field; and a sensor arranged on the torso of the living being and configured to provide a signal which depends on the magnetic or electromagnetic field and on a change in the distance, caused by the respiration of the living being, between the active transmitter and the sensor.04-08-2010
20110028857METHOD AND SYSTEM FOR DETERMINING AN INDIVIDUAL'S STATE OF ATTENTION - The present invention relates to a method and a system designed to determine an individual's state of attention from an individual's respiratory signal. The method of the invention comprises a first learning step, wherein the characteristics of an individual's normal state are determined by selecting a respiratory signal fragment that is considered to be normal according to a pre-established criterion, and a second analysis phase, wherein the individual's state of attention is determined from parameters extracted from the respiratory signal on the basis of some pre-defined rules and the individual's normal state previously characterised. The method of the invention is implemented in two embodiments. A first embodiment is based on the identification of pre-defined patterns in the respiratory signal and, in the second embodiment, an index indicative of the variability of the respiratory signal is defined.02-03-2011
20090131809Respiration sensor - The present invention discloses a respiration sensor, which is attached to a testee and comprises a triaxial acceleration sensing unit, a microprocessor, and at least one alarm unit. The triaxial acceleration sensing unit detects the respiration-related movements of a testee and output a detection signal. The microprocessor connects with the triaxial acceleration sensing unit, receives the detection signal and transforms the detection signal into a respiration signal to determine the respiration state of the testee. When the respiration signal is lower than a standard, the microprocessor triggers the alarm unit to give out an alarm to alert the persons nearby.05-21-2009
20110040201Periodic Disordered Breathing Detection - Systems and methods are directed to evaluating breathing disorders, such as periodic disordered breathing. A signal representative of patient respiration is developed, typically patient-internally. An envelope of the signal is provided. Periodicity of the envelope is detected, and presence and severity of periodic disordered breathing is determined based on the periodicity of the envelope.02-17-2011
20130023781IMPEDANCE MEASURING DEVICES AND METHODS FOR EMERGENCY CARDIOVASCULAR CARE - Disclosed is a device, method and computer readable media for determining the adequacy of Cardiopulmonary Resuscitation (CPR). The device comprises an electrical source generator, an electrical signal sensor receiving a signal from the electrical source generator and a microprocessor. The microprocessor determines changes in impedance of the patient based on the signal received from the electrical signal sensor. Software executing on the microprocessor determines at least one of intrathoracic volume, change in intrathoracic volume, rate of compression, depth of compression, respiratory volume, and respiratory rate based on the change of impedance of the patient and outputs a signal indicating the adequacy of ventilation and compressions.01-24-2013
20090062674SPIROMETRY-BASED METHOD FOR CONTINUOUS MONITORING OF WORK OF BREATHING AND MONITORING DEVICE THEREOF - A spirometry-based device for continuous monitoring of work of breathing (WOB) includes a flow sensor and a respiratory mechanics module connected with the flow sensor. The flow sensor may sample an airway gas flow and an airway pressure when a patient is in a state of inspiration. The respiratory mechanics module may calculate an incremental amount of a gas volume that flows to the patient side in a sampling period, calculate a product of the airway pressure and the incremental amount of the gas volume in the sampling period, and accumulate the product into the WOB.03-05-2009
20110288429CONTAMINATION REMOVAL FROM SENSORS PLACED IN AN AIRWAY - A sensor assembly includes a sensing element and an actuator. The sensing element measures a parameter associated with gas in an airway. The actuator actuates the sensing element to prevent contamination build up on the sensing element.11-24-2011
20110301482METHOD AND SYSTEM FOR MEASURING CHANGES IN INSPIRATORY LOAD - A method and system for measuring changes in inspiratory load of a patient's respiratory system during mechanical ventilation. The method and system calculate a first relation between a measured inspiratory airway pressure and a measured electrical activity of respiratory muscle, and a second relation between a measured inspiratory volume and the measured electrical activity. A load index is calculated from the first and second relations. Changes in inspiratory load are determined based on the load index.12-08-2011
20110301481SYSTEM FOR QUANTIFYING THE DISCREPANCY BETWEEN A PATIENT RECEIVING ASSISTED BREATHING AND A CORRESPONDING ASSISTANCE DEVICE - This system is characterized in that includes: 12-08-2011
20110288428FAN ASSEMBLY FOR A REBREATHE SYSTEM - A circulation system for use in a rebreathe system includes a base and a fan assembly coupled to the base. The base includes a motor and a rotatable drive shaft coupled to the motor. The fan assembly includes a housing with an inlet and outlet. The fan assembly further includes a fan coupled to the drive shaft to rotate therewith and is fluidly isolated from the drive shaft.11-24-2011
20100249630SYSTEMS AND METHODS FOR RESPIRATORY RATE MEASUREMENT - A radar-based physiological motion sensor is disclosed. Doppler-shifted signals can be extracted from the signals received by the sensor. The Doppler-shifted signals can be digitized and processed subsequently to extract information related to the cardiopulmonary motion in one or more subjects. The information can include respiratory rates, heart rates, waveforms due to respiratory and cardiac activity, direction of arrival, abnormal or paradoxical breathing, etc. In various embodiments, the extracted information can be displayed on a display.09-30-2010
20110295138Method and system for reliable inspiration-to-expiration ratio extraction from acoustic physiological signal - A method and system for reliably estimating inspiration-to-expiration ratio from an acoustic physiological signal. A background sound level is set to an energy level whereat a predetermined share of data points on an energy envelope is below the energy level, after which respiration phase start and end times are determined at energy crossings above the background sound level, enabling more reliable determination of respiration phases. Moreover, reliably determined respiration phase start and end times, in addition to being used to estimate inspiration-to-expiration ratio, are applied to other purposes, such as estimating respiration period, validating an independently computed respiration period and/or adjusting a sampling window of the acoustic physiological signal, reducing system complexity and conserving computational resources.12-01-2011
20110295139Method and system for reliable respiration parameter estimation from acoustic physiological signal - A method and system that reliably estimates a respiration parameter from an acoustic physiological signal without introducing undue complexity or intense computation. A median filter is applied to an energy envelope of the signal to remove heart sound “sparks” from the envelope and better isolate lung sounds. The median filter is followed by a low-pass filter that removes abrupt changes in the envelope caused by the median filter's nonlinearity. Various peak cross-checks are performed on an autocorrelation result generated from the envelope to confirm the reliability of the signal before an estimate of a respiration parameter is generated from the autocorrelation result.12-01-2011
20090312660Recognition and localisation of pathologic animal and human sounds - A system and method are described for combining the respiratory status (e.g. amount and type of cough) with the localization of organisms having the respiratory status in real time. The organisms are able to suffer from a respiratory complaint, i.e. they have lungs such as mammals especially farm animals and humans. In particular the present invention is advantageous for animals and humans who are exposed to closed confinements such as pens, cages, aircraft, public places where humans are in close proximity to each other.12-17-2009
20100298733Method and System for Heart Failure Status Evaluation Based on a Disordered Breathing Index - An evaluation of heart failure status is provided based on a disordered breathing index. Patient respiration is sensed and a respiration signal is generated. Disordered breathing episodes are detected based on the respiration signal. A disordered breathing index is determined based on the disordered breathing episodes. The disordered breathing index is trended and used to evaluate heart failure status. The disordered breathing index may be combined with additional information and/or may take into account patient activity, posture, sleep stage, or other patient information.11-25-2010
20090062675DETECTION OF THE BEGINNING OF AN APNEA - The beginning of an apnea can be recognized reliably if a series of sample values describing the breathing noise of a patient are processed in block-wise manner, and if a fingerprint with a predetermined number of fingerprint coefficients describing a waveform of the sample values within a block is determined for a number of sample values within the block. Since the number of fingerprint coefficients is smaller than the number of sample values within the block, comparison of the fingerprint coefficients with reference fingerprint coefficients characteristic for the waveform at the beginning of an apnea can be performed efficiently and reliably, in order to detect the beginning of the apnea.03-05-2009
20110263997SYSTEM AND METHOD FOR REMOTELY DIAGNOSING AND MANAGING TREATMENT OF RESTRICTIVE AND OBSTRUCTIVE LUNG DISEASE AND CARDIOPULMONARY DISORDERS - An apparatus, system and method for non-contact monitoring of respiratory functions that is used to identify and treat restrictive and obstructive lung disease or cardiopulmonary disorders including asthma or congestive heart failure in a monitored subject from a remote location. Respiratory waveforms are generated based on non-contact monitoring of physiologic functions. The generated waveforms are analyzed and compared to waveforms to help identify the presence of cardiopulmonary disease. Inspiratory:Expiratory ratios (I:E ratios) are calculated from the generated waveform to assist remote clinicians in their diagnosis and treatment of the monitored subject.10-27-2011
20090062672Method of measuring an acoustic impedance of a respiratory system and diagnosing a respiratory disease or disorder or monitoring treatment of same - The present invention provides a method of measuring an acoustic impedance of a respiratory system. The method comprises selecting a frequency range for an acoustic wave, directing the acoustic wave into the respiratory system and receiving an acoustic wave from the respiratory system. The method also comprises determining the acoustic impedance for a plurality of volumes or volume ranges of the respiratory system. Each volume, or the volumes within each volume range, is larger than RV or FRC and smaller than TLC whereby the determined acoustic impedances are specific for respective volumes or volume ranges. Further, the method includes determining a volume, or volume range, dependency of the acoustic impedance of the respiratory system and charaterising the respiratory system by analysing the dependency of the acoustic impedance on the volume or volume range.03-05-2009
20100087747ACCURATE DETECTION OF SLEEP-DISORDERED BREATHING - A method for detecting sleep-disordered breathing (SDB) includes acquiring a time sequence of a physiological signal from an individual, wherein the time sequence of the physiological signal includes a oscillatory pattern, computing an oscillatory interval signal using the time sequence of the physiological signal, decomposing the oscillatory interval signal into a plurality of ensemble empirical modes, selecting one of the plurality of ensemble empirical modes, calculating at least one of average amplitude or standard deviation of the instantaneous frequency in the selected ensemble empirical mode; and identifying SDB using at least one of the average amplitude or the standard deviation of the instantaneous frequency.04-08-2010
20110184304IMPLANTABLE MEDICAL DEVICE WITH SLEEP APNEA DETECTION CONTROL AND METHOD - A method for use in an implantable medical device comprises the steps of monitoring respiration with an amplifier having a gain, generating a moving apneic threshold based on recent respiration cycles, accumulating differences between amplitudes of respiration cycles and the moving apnea detection threshold and comparing the accumulated differences against an apnea detection threshold to detect the onset of an episode of apnea. The method further comprises measuring respiration levels upon detecting the onset of apnea, confirming the episode of apnea based upon the respiration levels measured upon detecting the onset of apnea; and adjusting one of the gain of the amplifier and the apnea detection threshold so that the time from the detection of onset of apnea to the time of confirmation of the episode of apnea is within a predetermined time range following the detection of the onset of apnea.07-28-2011
20100081954Method, device, and system to control pH in pulmonary tissue of a subject - Methods, systems, and devices are provided which include receiving data or providing data, wherein the data regards a physical condition affecting one or more subjects. The data can inform administration of a pharmaceutical composition in response to the physical condition, wherein the pharmaceutical composition is configured to contact pulmonary tissue to treat a pulmonary disease or condition in the one or more subjects. The data regarding the physical condition may be acquired prior to the subject entering an environment where the physical condition exists.04-01-2010
20100298732Rapid Shallow Breathing Detection for use in Congestive Heart Failure Status Determination - Systems and methods involve use of a medical device comprising sensing circuitry. One or more respiratory parameters are detected using the device. Patient baseline weight is provided, and an output signal indicative of a patient's congestive heart failure status is generated based on a change in the one or more respiratory parameters and a change in the patient's measured weight or predicted weight relative to the patient baseline weight. The respiratory parameters may include one or more of respiration rate, relative tidal volume, an index indicative of rapid shallow breathing by the patient, an index derived by computing a respiration rate and a tidal volume for each patient breath, and an index indicative of dyspnea, for example.11-25-2010
20100137729GAS MONITORING SYSTEM AND SIDESTREAM GAS MEASUREMENT SYSTEM ADAPTED TO COMMUNICATE WITH A MAINSTREAM GAS MEASUREMENT SYSTEM - A method and apparatus for interfacing a plurality of gas measurement systems, including a mainstream and a sidestream gas measurement system, to a host system via an interface unit. The present invention also pertains to a sidestream gas measurement system that output signals emulating the signals output by a mainstream gas measurement system or portion thereof, so that the sidestream gas measurement system can seamlessly communicate with a host system configured to communicate with a mainstream gas measurement system or a portion thereof.06-03-2010
20080255468SYSTEMS AND METHODS FOR NON-INVASIVE PHYSIOLOGICAL MONITORING OF NON-HUMAN ANIMALS - This invention provides monitoring garments for non-invasively monitoring physiological parameters in un-restrained and/or restrained animals, such as monkeys, rabbits, dogs, horses, and the like. The invention also includes methods and systems for collecting and processing monitoring data and methods for recognizing apneas and other respiratory events, periods of restfulness and wakefulness, stereotypical behavior and other indicators of dysphoric states, periods of emesis, and occurrence of barking and coughing.10-16-2008
20110144515SYSTEMS AND METHODS FOR PROVIDING ENVIRONMENT MONITORING - The present invention describes systems and methods for providing portable environment monitoring systems. An exemplary embodiment of the present invention provides a portable environment monitoring system comprising a sensor enabled to sense an airborne analyte. The portable environment monitoring system also includes a microprocessor in communication with the sensor and enabled to process information received from the sensor. Additionally, the portable environment monitoring system includes a memory device in communication with the microprocessor and enabled to store information received from the microprocessor. Furthermore, a user is enabled to ambulate with the portable environment monitoring system.06-16-2011
20110144514Tracheal Tube with Pressure Monitoring Lumen and Method for Using the Same - According to various embodiments, methods and systems for determining pressure in the lungs may employ tracheal pressure measurements. The tracheal pressure measurements may be obtained through a pressure monitoring lumen associated with a tracheal tube. Such systems may include a purging or flushing mechanism to keep the pressure monitoring lumen free of any obstructions. The flushing mechanism may utilize respiratory gases diverted from the airway stream and regulated to flush the lumen at relatively low pressures. The resulting pressure measurements may be used to determine a more accurate estimate of lung pressure, which in turn may be used to control a ventilator and provide breathing assistance to a patient.06-16-2011
20130218039System and Method for Assessing Breathing - A system for recording one or more parameters of a patient, comprising a peri-tracheal microphone, a memory, a controller, a power source, and a housing, is disclosed. The microphone provides a signal indicative of at least quiet breathing of the patient. The memory stores information derived from the signal indicative of at least quiet breathing of the patient. The controller writes the information into the memory. The power source supplies electrical energy to at least one of the microphone, the memory, or the controller. The housing contains one or more of the controller or the memory or the power source, and is coupled to a non-peri-tracheal portion of the patient's body such that the housing moves substantially in concert with said non-peri-tracheal portion of the body. Information stored in the memory may be assessed to characterize the state of the patient, possibly including aspects of breathing while awake or asleep.08-22-2013
20080249427Monitoring device and method - The present invention relates to a method and an apparatus for providing information relating to disturbances and/or disease pattern based on a patient's breathing parameters. Preferably, the apparatus has multiple functionalities and provides information relating to different disturbances and/or disease patterns. In particular, the present invention relates to an apparatus for identifying different indications of a patient, the apparatus comprising a sensor, for sensing signals indicative of a patient's breathing, a processing unit, for processing and/or analyzing the signals, and display means for displaying the outcome of the processing and/or analysis. The corresponding method for identifying different indications of a patient comprises the steps of sensing signals indicative of a patient's breathing, processing and/or analyzing the signals, and displaying the outcome of the processing and/or analysis.10-09-2008
20090264784APPARATUS AND METHOD FOR CREATING MULTIPLE FILTERED OUTPUTS FROM A SINGLE SENSOR - Multiple different output signals for a polysomnograph (PSG) machine, the multiple different output signals including a first output indicative of an upper airway restriction (UAR), a second output indicative of an airway pressure during respiration, and a third output indicative of an airway air temperature during respiration, can be produced using a single sensor input.10-22-2009
20100137730Systems and Methods for Determining Respiration Metrics - Systems, devices and methods provide for acquiring respiration information. A respiration information device includes timer circuitry to time a plurality of shorter time apertures and a plurality of longer time apertures. A respiration sensor, which may be implemented as a transthoracic impedance sensor, is configured to generate a signal indicative of patient respiration. For each aperture of the plurality of shorter time apertures and for each aperture of the plurality of longer time apertures, an estimated characteristic of the respiration is determined. Respiration metrics are developed using one or both of the estimated respiration characteristics of the shorter time apertures and the estimated respiration characteristics of the longer time apertures.06-03-2010
20090137918SYSTEM AND METHOD FOR DIAGNOSIS OF BOVINE DISEASES USING AUSCULTATION ANALYSIS - A system and method are provided for diagnosis of bovine respiratory diseases using auscultation techniques wherein the acoustic characteristics of a recorded spectrogram is compared with existing data enabling a caregiver to make a diagnosis for a diseased animal. Lung sounds are obtained by use of an electronic stethoscope, and the sounds are stored as digital data. Signal conditioning is used to place the data in a desired format and to remove undesirable noise associated with the recorded sounds. An algorithm is applied to data, and lung scores are calculated. The lung scores are then categorized into various levels of perceived pathology/disease within the animal based upon baseline data that categorizes the lung scores. From the lung scores, a caregiver may then associate a diagnosis, prognosis, and a recommended treatment. Analysis software in the present invention generates the lung scores from the recorded sounds, and may also provide the user a visual display of presumptive diagnoses as well as recommended treatments.05-28-2009
20090326402SYSTEMS AND METHODS FOR DETERMINING EFFORT - According to embodiments, methods and systems for determining effort is disclosed. Effort may relate to a measure of strength of at least one repetitive feature in a signal. Effort may also relate to physical effort or work of a process (e.g., respiratory effort) that may affect the signal (e.g., a PPG signal). Effort may be determined through feature analysis of a transformed signal that has been transformed via a continuous wavelet transform. For example, respiratory effort may be determined using a scalogram generated based at least in part on a wavelet transform of a physiological signal and analyzing features of the scalogram.12-31-2009
20090082686System and/or method for initiating a medical task involving motion with a device - A system for controlling a motion device. A motion control system comprises a motion control device, and a first user is associated with the motion control system. An output system is arranged to generate motion signals that may be perceived by the first user. A motion server system comprises a plurality of motion scripts associated with messages to be transmitted to the first user and a motion program web page. A processing system comprises a browser program compatible with the motion program web page. A communications system transfers data between the various systems. A second user controls the server system to form a motion message corresponding to a desired motion signal based on the at least one motion script stored by the server system. The motion control system causes the output system to generate the desired motion signal based on the motion message.03-26-2009
20090292219REAL TIME DETECTION OF UPPER RESPIRATORY SYSTEM CONDITIONS IN HORSES - Devices and methods allow for real time detection of an upper respiratory system condition in a horse. The device comprises a monitor of a size permitting positioning of the monitor in an upper throat region of a horse via a nasal cavity, and a sleeve operable to insert the monitor into and position the monitor within an upper throat region of a horse via a nasal cavity. The device may further include a transmitter operable to wirelessly transmit video signals and optionally sound signals from the monitor to a receiver remote from the horse. The method comprises positioning the monitor in an upper throat region of a horse via a nasal cavity, subjecting the horse to a workout, and obtaining with the monitor visual events and optionally sound events in the upper throat region of the horse during the workout. The method may further comprise transmitting video signals and optionally sound signals from the monitor to a receiver remote from the horse during the workout.11-26-2009
20110230778Methods and devices for continual respiratory monitoring using adaptive windowing - Methods and devices for continual respiratory monitoring of a human subject using adaptive windowing provide continual estimates of the respiration period of the subject by continually buffering and evaluating samples of a respiratory signal in which the subject's breath sounds are embodied, and dynamically adjust the sampling window length based at least in part on the respiration period. Through this adaptive windowing technique, a sampling window length is maintained that is tailored to the subject's breathing habits, does not unduly inhibit real-time respiratory monitoring, and does not place unnecessary burdens on memory and processing resources of the respiratory monitoring device.09-22-2011
20110230777Lightweight wheeze detection methods and systems - Lightweight wheeze detection methods and systems for portable respiratory health monitoring devices conserve computing resources in portable respiratory health monitoring devices by employing lightweight algorithm that calculates a partial STFT image of a respiratory signal that includes all data points necessary for wheeze detection but excludes many data points that are unnecessary for wheeze detection. The methods and systems provide substantial savings in computing resources while still ensuring every wheeze in a respiratory signal is detected.09-22-2011
20090221926Method and Device for Generating of a Signal that Reflects Respiratory Efforts in Patients on Ventilatory Support - A method and device for generating a signal that mirrors changes in the level of effort exerted by respiratory muscles of patients on mechanical ventilatory support comprising: monitoring and storing airway pressure (P09-03-2009
20090209877 AUTOMATED QUALITATIVE MASK FIT TESTER - A hand-held, automated qualitative fit tester (QLFT) for establishing gas mask fit integrity. The automated QLFT may be configured to utilize a pressure source in combination with a cartridge and a nebulizer to generate aerosols having size distributions and concentrations that are substantially the same as OSHA-approved manual units. The QLFT may further include a cartridge that contains the aerosol solution used to test mask integrity. The cartridge may be configured to recapture solution that collects on the interior walls of the nebulizer. The automated QLFT may also be equipped with a microprocessor for executing sequences that are in substantive compliance with 29 CFR 1910.134 and for writing to a data storage device. The automated aspects of the invention can reduce or negate the need for operating personnel to repeatedly and manually actuate a squeeze ball and record results manually, as is required with present OSHA-approved hand-held aerosol generators.08-20-2009
20100262032Systems and Methods for Indicating Aberrant Behavior Detected by an Implanted Medical Device - Various systems and methods provide for intervening where aberrant heart and/or respiratory functionality is detected. For example, some embodiments of the present invention provide a monitor capable of detecting the occurrence of various aberrant events, and in some cases for intervening in the event. In some cases, a pacemaker or some other medical device detects an abnormality, and an information signal indicating the detected abnormality is transmitted from the pacemaker to a bedside monitor or some other monitor associated with the patient. Based on the received information signal, the bedside monitor can deliver an appropriate therapy. Such a therapy can be, but are not limited to, the sounding of an audible alarm to awake the patient, and/or the programming of a medical device implanted in the patient. Further, in some cases, the detected aberrant behavior and/or events surrounding the aberrant behavior can be transmitted from the bedside monitor to a remote monitor. Information can be retrieved from the remote monitor by a clinician and used in real time, or at a later time to diagnose and/or treat the patient.10-14-2010
20110060236Method for Measuring Breath Temperature in Breath Alcohol Testing - In a method for determining ethanol concentration by exhalation tests there is obtained an additional feature in indirect measuring of the temperature of the exhalation air by making an IR measurement at a wave length with a high absorption of water molecules.03-10-2011
20100210962Respiratory signal detection and time domain signal processing method and system - A respiratory signal detection and time domain signal processing method and system classifies respiratory phases and determines respiratory time data useful in respiratory health determinations. The method and system analyze respiratory signals collected at multiple detection points at least one of which ensures that respiratory phases can be properly classified. Moreover, the method and system employ a time domain signal processing approach that facilitates determination of respiratory time data while realizing savings in computing power relative to frequency domain processing approaches.08-19-2010
20100099998Asthma status scoring method and system with confidence ratings - A method and system for assessing the health status of a patient, such as the asthma status of a patient, provides an asthma status score and a confidence rating indicative of the score's reliability using continuous real-time data. In some embodiments, the assessment comprises a multidimensional analysis in which asthma status scores and respective confidence ratings are generated for multiple individual asthma health dimensions as well as a summary asthma health dimension indicative of overall asthma health. In some embodiments, the individual dimensions include an environmental trigger dimension based on sensor-based environmental data, a physiological burden dimension based on sensor-based physiological data, a medication adherence dimension based on patient diary data and a perceived symptom dimension based on patient diary data.04-22-2010
20090112114Method and system for self-monitoring of environment-related respiratory ailments - Methods and systems for continual self-monitoring of respiratory health and components for use therewith. The present methods and systems and their related components improve the standard of core in respiratory health self-monitoring by providing continual and unobtrusive monitoring that accounts for environmental, physiological and patient background information, and is capable of yielding a complex array of respiratory health-preserving responses. In some embodiments, the present methods and systems leverage ubiquitous handheld electronic devices [e.g. cell phones and personal data assistants (PDA)] for respiratory health self-monitoring.04-30-2009
20090036790METHOD DEVICE AND SYSTEM FOR MONITORING LUNG VENTILATION - A method of monitoring lung ventilation of a subject is disclosed. The method comprises recording signals from a plurality of sensing location on the chest of the subject, at least a portion of the signals being indicative of a local motion of the chest at a respective sensing location. The method further comprises operating a data processing system to analyze the signals such as to determine a status of the ventilation, thereby to monitor the lung ventilation of the subject.02-05-2009
20110172551BIDIRECTIONAL PHYSIOLOGICAL INFORMATION DISPLAY - A patient monitor for displaying a physiological signal can include a visual element having a middle portion indicative of a transition in the physiological signal between physiological states. The visual element can also include first and second extremity portions, the first extremity portion extending from the middle portion in a first direction and the second extremity portion extending from the middle portion in a second direction. The visual element can also include an actionable value indicator to specify a value about the middle portion and the first and second extremity portions. The patient monitor can also include a processor configured to cause the value indicator to actuate in both the first and second directions according to changes in the physiological signal.07-14-2011
20100331715SYSTEMS AND METHODS FOR DETECTING EFFORT EVENTS - A method and system for detecting effort events is disclosed. Effort may be determined through feature analysis of the signal as transformed by a continuous wavelet transform, which may be compared against a reference effort measure to trigger an effort event flag that signals the onset and/or severity of an effort event. For example, a respiratory effort measure may be determined based at least in part on a wavelet transform of a photoplethysmograph (PP G) signal and features of the transformed signal. A respiratory reference effort measure may be based at least in part on past values of the respiratory effort measure, and a threshold test may be used to trigger an effort event flag, which may indicate a marked change in respiratory effort exerted by a patient.12-30-2010
20110009761Method and system for real-time profiling respiratory motion with variable-horizon prediction capability - A method of profiling respiratory motion is provided that includes estimating a temporal respiratory pattern, using a warping function to map the temporal respiratory pattern to a corresponding phase value, using a baseline drift function to determine drift in the temporal respiratory pattern, and noise filtering the temporal respiratory pattern, where variations in a respiratory motion are provided. The warping function includes combining an elliptical shape prior for providing iso-phase events in real-time, where the elliptical shape prior is in an augmented state space and Poincare´ sectioned. Parameters of the ellipse are estimated, where a projection of a center of the ellipse onto an observed respiratory position provides a real-time estimation for baseline drift of the respiratory motion.01-13-2011
20110009760Hospital Readmission Alert for Heart Failure Patients - Physiologic data is collected for a heart failure patient during hospitalization and after discharge of the heart failure patient from a hospital, and analyzed for a change in the collected physiologic data. Deterioration of the patient's heart failure status is detected based at least in part on detecting an acute deleterious change in the collected physiologic data indicative of an abnormality in one or more physiologic parameters represented by the physiologic data. A readmission alert is generated in response to the acute deleterious change in the collected physiologic data. The readmission alert indicates that further deterioration in the patient's heart failure status may require readmission of the patient to the hospital.01-13-2011
20110034818METHOD AND SYSTEM FOR QUANTITATION OF RESPIRATORY TRACT SOUNDS - Provided is a system and method for analyzing respiratory tract sounds. Sound transducers are fixed on the skin over the thorax that generates signals indicative of pressure waves at the location of the transducer. Processing of the signals involves performing an event search in the signals and determining event parameters for events detected in the search.02-10-2011
20110130673Apparatus for determining respiratory muscle endurance of a person - Apparatus (06-02-2011
20110245704METHODS AND SYSTEMS FOR ANALYSING RESUSCITATION10-06-2011
20110245703SYSTEM AND METHOD PROVIDING BIOFEEDBACK FOR TREATMENT OF MENOPAUSAL AND PERIMENOPAUSAL SYMPTOMS - An apparatus, system and method for non-contact monitoring of respiratory and/or cardiac functions that is used to provide appropriate biofeedback to a monitored subject in order treat menopausal and perimenopausal symptoms is discussed. Respiratory and/or cardiac waveforms are generated based on monitored physiologic functions. The generated waveforms are analyzed and compared to a target waveform resulting from breathing techniques designed to address menopausal and perimenopausal symptoms. Appropriate biofeedback is generated for the monitored subject based on the analysis of the generated waveform.10-06-2011
20110071415PLEURAL DRAINAGE SYSTEM AND METHOD OF USE - A pleural drainage system having an inflatable membrane and a method of using the system are disclosed. The pleural drainage system includes a pleural drainage catheter system. The pleural drainage catheter system includes an inflatable membrane and a drainage catheter integrally coupled to the inflation membrane, the drainage catheter defining a drainage lumen through which fluid is drawn from the pleural cavity, and an inflation lumen coupled for flow of inflation fluid to and from an interior of the inflatable membrane. The pleural drainage system further includes a suction system coupled to the drainage catheter and a fluid collector coupled to receive fluid from the drainage catheter. The pleural drainage system further includes an inflation system connected to deliver inflation fluid to the interior of the inflatable membrane. The pleural drainage system may be used to monitor an associated airleak in the pleural cavity of a patient.03-24-2011
20090076405Adherent Device for Respiratory Monitoring - A respiratory monitoring system is provided. A measuring system is provided that includes, (i) an adherent device configured to be coupled to a patient, the adherent device including a plurality of sensors that monitor respiratory status, at least one of the sensors configured to monitor the patient's respiration, and (ii) a wireless communication device coupled to the plurality of sensors and configured to transfer patient data directly or indirectly from the plurality of sensors to a remote monitoring system. A remote monitoring system is coupled to the wireless communication device.03-19-2009
20110130674Method and System for Regional Assessment of Lung Physiology - The invention provides a system and method for regional assessment of lung physiology. The system includes a plurality of sound transducers configured to be fixed on a surface of the individual over the thorax. A processor is configured to receive signals generated by the transducers and to determine from the signals a value of a parameter in each of one or more regions of the lungs. The method of the invention includes obtaining signals indicative of pressure waves at locations over the thorax; and determining from the signals a value of a parameter in each of the regions of the lungs.06-02-2011
20110178419TRACHEAL TUBE WITH PRESSURE MONITORING LUMEN AND METHOD FOR USING THE SAME - According to various embodiments, methods and systems for determining pressure in the lungs may employ tracheal pressure measurements. The tracheal pressure measurements may be obtained through a pressure monitoring lumen associated with a tracheal tube. Such systems may include a purging or flushing mechanism to keep the pressure monitoring lumen free of any obstructions. The flushing mechanism may utilize fluids delivered through the pressure monitoring lumen at a predetermined point in the breathing cycle and/or at a predetermined pressure relative to the respiratory gases. The resulting pressure measurements may be used to determine a more accurate estimate of lung pressure, which in turn may be used to control a ventilator and provide breathing assistance to a patient.07-21-2011
20110251509SYSTEMS AND METHODS FOR INHIBITING SECRETION FLOW INTO A FUNCTIONAL ASSESSMENT CATHETER - Devices systems and methods are disclosed for preventing or inhibiting secretions from entering the lumen of a functional assessment catheter for the lungs, or removing collected secretions. The catheter comprises an expandable element, a cover, or an internal component configured to prevent or inhibit secretion flow into the lumen. The catheter alternatively or additionally comprises a distal end configured to facilitate air flow, absorb secretions or repel secretions away from the catheter tip. The catheter alternatively or additionally comprises an internal element such as a coilable wire, or an obturator configured to prevent secretions from being drawn into the lumen, or to actively remove the secretions. The catheter alternatively or additionally comprises an element to dry, aerate or aspirate the lung passageways.10-13-2011
20090062673Electro-Pneumatic Assembly for Use in a Respiratory Measurement System - An electro-pneumatic assembly for use in a respiratory measurement system that includes a housing having a plurality of channels defined therein and a plurality of walls forming a cavity. The housing includes an upper face, a lower face, and a plurality of apertures defined in the lower face of the housing to. A cover is affixed to the upper face of the housing to enclose the cavity thereby forming a chamber, and to enclose the channels thereby forming a plurality of conduits. A control component is operatively coupled to at least one aperture in the plurality of apertures, and a measurement component is operatively coupled to at least one aperture in the plurality of apertures. This assembly provides a simple, robust component for managing the pneumatics of the respiratory measurement system.03-05-2009
20100016749Method and System for the Monitoring of Respiratory Acitivity and for the Treatment of Breathing Disorders Such as Sleep Apnea - A method and system for sensing the vagus nerve in order to monitor respiratory activity, treating breathing disorders, such as, for example, sleep apnea and a generic bio-interfacing platform that may be adapted for either open-loop or closed-loop applications.01-21-2010
20100004552METHOD AND DEVICE FOR THE DETERMINATION OF BREATH FREQUENCY - The present invention provides a method for determining the respiratory rate of a patient comprising the steps of determining at least two time dependent respiratory signals by at least two different methods as well as a determining of a respiratory rate on the basis of the at least two time dependent respiratory signals. In this connection, the resulting respective instantaneous respiratory rates f01-07-2010
20080243014BREATHING SOUND ANALYSIS FOR DETECTION OF SLEEP APNEA/POPNEA EVENTS - Apparatus for use detection of apnea includes a microphone mounted in the ear of the patient for detecting breathing sounds and a second external microphone together with an oximetric sensor. A transmitter at the patient compresses and transmits the signals to a remote location where there is provided a detector module for receiving and analyzing the signals to extract data relating to the breathing. The detector uses the entropy or range of the signal to generate an estimate of air flow while extracting extraneous snoring and heart sounds and to analyze the estimate of air flow using Otsu's threshold to detect periods of apnea and/or hypopnea. A display provides data of the detected apnea/hypopnea episodes and related information for a clinician.10-02-2008
20090118631APPARATUS AND METHOD FOR BREATHING PATTERN DETERMINATION USING A NON-CONTACT MICROPHONE - A method is provided for analyzing respiration of a subject (05-07-2009
20080287820DEVICES AND METHODS FOR ASSESSING MOTOR POINT ELECTROMYOGRAM AS A BIOMARKER - Described herein are methods of detecting the presence or progression of neuromuscular disorders (including ALS) based at least in part on diaphragm EMG signals taken at different points in time from the same implanted electrode(s). Signals may be used to diagnose or to monitor progression of a disorder or to track a treatment. Thus, diaphragm EMG signal may be used as a marker (e.g., a “biomarker”) for the detection or progression of a neurological disorder such as ALS. The characteristics or parameters of diaphragm EMG signals may be used to create an activity index, which may be output or compared and further analyzed. These signals may also be analyzed to show a difference between the left and right sides of the diaphragm.11-20-2008
20080255467METHOD AND SYSTEM FOR DETECTING BREATHING TUBE OCCLUSION - A method for identifying an occlusion in a breathing tube of a ventilator system is disclosed herein. The method includes obtaining data related to a respiratory signal, transferring the data to a processor, and implementing the processor to evaluate the data in a manner adapted to automatically identify the presence of an occlusion in the breathing tube. A corresponding ventilator system is also disclosed.10-16-2008
20110054340INDICATIVE CHEST SEAL - A wound dressing can include an adhesive dressing with a diaphragm vent that allows the passage of gas out of a patient's body but restricts the flow of gas into the body. A sensor device is positioned so as to be able to sample gas passing through the vent and measure one or more gas characteristics, such as temperature, humidity, and/or pressure. If the data from the sensor device exceeds certain parameters suggestive of a pneumothorax, a processing device can activate an alert system, such as an indicator light, audible alarm, and/or wireless signal, to alert the care provider.03-03-2011
20110054339METHOD FOR DETECTING RESPIRATORY CYCLES IN A STETHOSCOPE SIGNAL - In order to distinguish between a breathing phase and a non-breathing phase, it comprises steps consisting, for each stethoscope signal sample, of: —filtering (03-03-2011
20110054338DEVICE, SYSTEM AND METHOD FOR MONITORING HEAT STRESS OF A LIVESTOCK ANIMAL - A method of estimating heat stress of livestock animals. The method comprises capturing a sequence of images each depicting a thorax of a livestock animal during a monitoring period, analyzing the sequence of images to detect a movement frequency of the thorax during the monitoring period, computing a breathing rate of the livestock animal as a function of the movement frequency, and estimating a heat stress status for the livestock animal according to the breathing rate.03-03-2011
20110263998SYSTEM FOR DETECTING RESPIRATORY MUSCLE ACTIVITY OF A PATIENT RECEIVING ASSISTED BREATHING - The invention relates to a system for detecting respiratory muscle activity of a patient (10-27-2011
20100305463AIRWAY BYPASS SITE SELECTION AND TREATMENT PLANNING - This invention relates to systems and methods for site selection and placement of extra-anatomic passages altering gaseous flow in a diseased lung.12-02-2010
20100324437DEVICE AND METHOD FOR ASSESSING PHYSIOLOGICAL PARAMETERS - This invention is directed to a device and a method for assessing a subject. The device has at least one impedance measuring element functionally connected to a programmable element, programmed to analyze an impedance measurement, and to provide an assessment of at least one respiratory parameter of the subject. In another embodiment, the device has at least one small-scale motion measuring element. In another embodiment, the device preferably has a high resolution lens, a camera, and a programmable element, which is programmed to analyze at least one physiological parameter of the subject. The physiological parameter is preferably obtained by measuring differential displacements in the camera's field of view. The method according to the present invention involves recording a physiological parameter, analyzing the parameter to make a prediction, and providing an indication of the prediction to a user.12-23-2010
20100324438Detection of Disordered Breathing - Devices and methods for detecting disordered breathing involve determining that the patient is asleep and sensing one or more signals associated with disordered breathing indicative of sleep-disordered breathing while the patient is asleep. Sleep-disordered breathing is detected using the sensed signals associated with disordered breathing. The sensed signals associated with disordered breathing may also be used to acquire a respiration pattern of one or more respiration cycles. Characteristics of the respiration pattern are determined. The respiration pattern is classified as a disordered breathing episode based on the characteristics of the respiration pattern. One or more processes involved in the detection of disordered breathing are performed using an implantable device.12-23-2010
20110137195Method and Apparatus for Monitoring Respiratory Activity - A method of monitoring respiratory activity includes obtaining a respiration sound signal. The respiration sound signal is processed to identify a frequency component corresponding to respiration, and an amplitude related parameter of the component is measured. If the measured parameter is in an indeterminate region then a temporal domain related parameter of the identified frequency component is measured. An apparatus for monitoring respiratory activity is also disclosed.06-09-2011
20110152706METHOD AND APPARATUS FOR SENSING RESPIRATORY PRESSURE IN AN IMPLANTABLE STIMULATION SYSTEM - A method and system for sensing respiration in the treatment of sleep apnea is disclosed.06-23-2011
20110021940INCENTIVE AUDIO FOR PULMONARY FUNCTION DIAGNOSTICS - A system and method for obtaining measurements of a person's pulmonary diagnostic is described. One embodiment includes a method of providing audible signals related to measurement of pulmonary function, the method comprising receiving a pulmonary input through a receiver, transferring the pulmonary input to a sensor, generating an input signal, using the sensor, based on the pulmonary input, and generating a responsive audible signal through a speaker, wherein the responsive audible signal is based on the input signal. The pulmonary input may comprise, for example, an inhalation, exhalation, gas content reading, or other pulmonary input. The responsive audible signal may comprise a verbal audible signal, a tone, or some combination of both. The responsive audible signal could be for instruction and/or encouragement. The method could further include generating audible instruction signals that are not necessarily related to the pulmonary input.01-27-2011
20090024046Apparatus and method for detection of one lung intubation by monitoring sounds - A method and a device for the acoustic detection of a one lung intubation situation in a human subject are disclosed. According to some embodiments, the disclosed method includes computing an autoregressive moving average (ARMA) or an autoregressive function of electrical signals received from acoustic detectors placed at different locations on the body of the subject. Appropriate locations for acoustic detectors include the back region and the chest region. The disclosed method and apparatus are insensitive to uncancelled, random background noise with a loudness associated with an operating room or intensive care ward. The disclosed device is configurable so that the relative occurrence rate of missed detections or false negatives and false positive alarms can be modified. In one exemplary embodiment, the device is adapted such that at most 9% of identifications are false positive identifications, and at most 2% of identifications are false negative identifications.01-22-2009
20110172552ACOUSTIC SLEEP APNEA MONITOR - The present invention discloses an apparatus and method for monitoring an individual for an irregular respiratory event. The present invention discloses a sleep apnea monitor for monitoring an individual for an apneic event. The monitor includes a microphone for detecting tracheal sounds related to respiration so that irregular lengths of time between such sounds may activate an alert of the medical condition. The method of monitoring an individual for an irregular respiratory event includes attaching the monitor in a nonintrusive manner to a location around the throat area.07-14-2011
20120010518TELEMEDICINE SYSTEM - System for medical interaction with a patient, comprising one or more computing devices configured to: electronically receive medical data via a communication link; determine a beginning of a breathing interval using at least a portion of the medical data; determine an end of the breathing interval using the at least a portion of the medical data; determine a time interval between the beginning of the breathing interval and the end of the breathing interval; and assign a level of importance out of a plurality of levels of importance to the time interval, wherein high levels of importance are assigned to short measured time intervals and successively lower levels of importance are assigned to successively longer measured time intervals.01-12-2012
20120157870NOISE REDUCTION OF BREATHING SIGNALS - The invention relates to a system for and a method of processing breathing signals. A noise reduction operation is performed on a spectral breathing signal (06-21-2012
20120071777Cough Analysis - A computer-implemented method comprises: (A) receiving first acoustic data representing a first cough train of a first human subject, wherein the first cough train comprises at least one first cough of the first human subject; (B) identifying at least one first value of at one first acoustic property of the first acoustic data; and (C) determining, based on the at least one first value of the at least one first acoustic property, whether the first acoustic data indicates that the first human subject has a severe respiratory illness.03-22-2012
20110092839MASK AND METHOD FOR USE IN RESPIRATORY MONITORING AND DIAGNOSTICS - Disclosed herein is a mask to be worn by a subject on its face for use in respiratory monitoring and/or diagnostics. In general, the mask comprises at least one transducer responsive to sound and airflow for generating a data signal representative thereof, and a support structure shaped and configured to rest on the subject's face and thereby delineate a nose and mouth area thereof. The support structure comprises two or more outwardly projecting limbs that, upon positioning the mask, converge into a transducer supporting portion for supporting the at least one transducer at a distance from the area, thereby allowing for monitoring via the at least one transducer of both sound and airflow produced by the subject while breathing. The limbs may, in some examples, have along at least a portion thereof, an inward-facing channel defined therein for channeling toward a given transducer, air flow produced by the subject while breathing. A method is also disclosed for remotely diagnosing a breathing disorder of a subject.04-21-2011
20110066058System and Method for Three-Dimensional Airway Reconstruction, Assessment and Analysis - This invention relates to a system and method for three-dimensional airway reconstruction, assessment and analysis. Specifically, the invention relates to a system and method for acquiring one- and two-dimensional data regarding a cavity, such as an esophagus or an airway, and manipulating that data to reconstruct a three-dimensional geometrical object representing that cavity. Suitable data collection methods include, but are not limited to, non-ionizing, non-invasive protocols including acoustic reflectometry, such as that performed by a DOS®- or Windows®-based pharyngometer or rhinometer. The resulting three-dimensional geometric object of the subject cavity can be used to diagnose cavity morphology/obstruction, aid in management and treatment of the obstruction, evaluate efficacy of management and treatment of the obstruction and also provide information for use in outcome analysis and forensic and medico-legal evaluation of diagnosis and treatment of cavity obstruction/stenosis.03-17-2011
20110066059SYSTEM AND METHOD FOR ANTICIPATING THE ONSET OF AN OBSTRUCTIVE SLEEP APNEA EVENT - Systems and methods for detecting a general breathing event and for anticipating an onset of an obstructive sleep apnea (OSA) event. The method for detecting a general breathing event includes receiving a plurality of signals from at least one microphone. The method also includes determining a one-sided power spectral density from the received signals. The method further includes distinguishing each received signal as either a breath signal or a background noise signal. The method still further includes calculating a breath signature by processing each breath signal.03-17-2011
20100069769WIRELESS PYRO/PIEZO SENSOR BASE STATION - This document discusses, among other things, an apparatus and method for receiving biomedical data of a patient. Biomedical data of the patient can be wirelessly received using a wireless sensor base station including a transceiver to receive the biomedical data from a wireless sleep sensor. A demultiplexer of the wireless sensor base station can separate respiration information from the biomedical data. Examples include providing the biomedical data to a polysomnograph (PSG) machine or a sleep therapy device using an output of the wireless sensor base station.03-18-2010
20110034819DEVICE FOR DETECTING THE OBSERVANCE BY A PATIENT OF AN OXYGEN-THERAPY TREATMENT - The invention relates to a device for implementing a system for detecting the observance by a patient of an oxygen-therapy treatment involving an oxygen supply, and for recording the data of said treatment and transmitting said data. The invention also relates to the use of said device, and to a method for tracking the observance of an oxygen-therapy treatment.02-10-2011
20100094153Respiration monitoring - A respiration sensor comprises a frame that is adapted to extend from a first point of contact on one side of a patient to a second point of contact on an opposing side of the patient, including a force sensor in the first point of contact. The second point of contact can comprise a patient support, which will usually support the patient in a generally horizontal state. The frame is preferably as shown in U.S. Pat. No. 5,681,326 with an arch extending over an area adapted to receive a patient. The first point of contact can include a plate which abuts the patient. The sensor is ideally located between the plate and the remainder of the frame.04-15-2010
20120123286DEVICES FOR DIAGNOSING SLEEP APNEA OR OTHER CONDITIONS AND RELATED SYSTEMS AND METHODS - A system includes a sensor device having a body configured to be inserted into an airway of a patient and one or more sensors mounted in or on the body. The one or more sensors are configured to collect sensor data associated with the airway of the patient. The system also includes a signal analyzer configured to analyze the sensor data. The one or more sensors could include one or more microphones. The signal analyzer could identify volume and/or pitch characteristics of the sensor data, perform pattern recognition to identify one or more patterns using the volume and/or pitch characteristics, and use the one or more patterns to identify a type, a location, and/or a degree of airway obstruction. This could be done, for instance, to determine if the patient suffers from obstructive sleep apnea or other condition that affects his or her airway.05-17-2012
20120136267Apparatus and Method For Visually Determining Whether Respiration is Occurring - What is presented is an apparatus for visually determining whether respiration is occurring comprising a strip of material having a first side and a second side in which the first side has a layer of thermally sensitive material which undergoes a color change when exposed to a temperature variance caused by a subject's respiration. The thermally sensitive material could be a thermochromic liquid crystal compound. The second side could have a layer of adhesive which could be used to adhere the strip of material in the vicinity of the subject's upper lip. The strip of material could also be adhered to a visible surface of a respiratory assistance device with the adhesive.05-31-2012
20110184303Methods and Systems Related to Respiration - Disclosed herein are methods and systems related to respiration. The methods and systems are related to the analysis of a subject's respiration. In some forms the methods and system can use a nonlinear analysis.07-28-2011
20110184302MEDICAL DETECTION DEVICE FOR THE DETECTION OF SLEEP APNEA AND/OR SLEEP HYPOPNEA - A medical detection device for detecting breathing disruptions during sleep includes a fastening arrangement for attaching a detecting arrangement to the human body, having at least one microphone for detecting breathing sounds and a logic arrangement configured to evaluate the breathing sounds.07-28-2011
20100262031Method and system for respiratory phase classification using explicit labeling with label verification - A method and system classify respiratory phases in a single channel acoustic signal as inspiratory and expiratory using explicit labeling with label verification. In the method and system, a subject explicitly indicates through a user input the start of a respiratory cycle (i.e. start of inspiration). The phase indication is applied to provisionally label several consecutive phases of a single channel acoustic signal as inspiratory and expiratory. A provisional phase rule set is then generated based on characteristic differences between the inspiratory and expiratory phases. The phase indication, provisional labeling and provisional rule set generation steps are then repeated. The two generated provisional rule sets are then compared for a match to verify the accuracy of the subject's phase indications and the ability to automatically recover phase in the event of signal loss.10-14-2010
20100174207System and Method for Characterizing Patient Respiration - Patient respiration may be characterized using a marked respiration waveform involving a respiration waveform annotated with symbols, markers or other indicators representing one or more respiration characteristics. A respiration waveform may be acquired by sensing a physiological parameter modulated by respiration. A marked respiration waveform may be generated based on the acquired respiration waveform and one or more detected respiration waveform characteristics and/or respiration-related conditions. One or more components used to generate the marked respiratory waveform may be fully or partially implantable.07-08-2010
20120083707METHOD AND DEVICE FOR THE AUTOMATIC EVALUATION AND ANALYSIS OF A CAPNOGRAM AND COMPUTER PROGRAM FOR IMPLEMENTING THE METHOD AS WELL AS COMPUTER PROGRAM PRODUCT WITH SUCH A COMPUTER PROGRAM - A method implemented, e.g., as software and a device operating according to the method for the automatic evaluation and analysis of a capnogram are provided. Measured values for an expired volume—volume measured values—and measured values for a carbon dioxide concentration—concentration measured values—are recorded for the breathing gas of a test subject. An automatic approximation of at least one part of the curve of the concentration measured values over the volume measured values is performed, by using three mutually adjacent straight lines for the approximation. The area is determined using the third straight line according to Fowler for the determination of the serial dead space Vds.04-05-2012
20120172739MEMBRANE VALVE - The invention relates to a membrane valve, in particular for inhalation devices, comprising a planar membrane made of permanently flexible material, a frame, which has an air opening that is somewhat smaller than the membrane, at least one web, which connects the frame to a retainer that is arranged approximately at the center of the air opening, and a pin, the shaft of which extends through a fastening opening approximately at the center of the membrane and is located in a retaining opening in the retainer, wherein the membrane lies on the frame in the rest state and wherein the pin is spread to form a head, the distance of which to the membrane is small in comparison to the thickness of the membrane or which head lies on the membrane, and the diameter of the shaft near the head is greater than the diameter of the fastening opening,; and the diameter of the shaft at the free end of the shaft is approximately equal to the diameter of the fastening opening.07-05-2012
20100049073Method, System, and Computer Program for Determining if a Subject is Snoring - In one embodiment of the present invention, a method for determining if a subject is snoring is disclosed, including the steps of: determining if the subject is present in a bed; determining if there is snoring; determining if snoring is emitted from the subject; and generating an output signal, wherein the output signal is dependent on if the snoring is emitted from the subject. A computer program arranged to cause a computer to perform the steps of the method is also disclosed. Further, a system for snoring determination is disclosed, comprising a processor, an audio input means providing an audio signal to the processor, and a sensor pad arranged in a bed, the sensor pad providing a sensor pad signal to the processor, wherein the processor comprises devices for determination of presence of a subject from the sensor pad signal; devices for determination of snoring from the audio signal; devices for determination if the subject is emitting the snoring from the sensor pad signal and the audio signal; and an output arranged to provide an output signal according to determinations of the devices for determination of presence, devices for determination of snoring, and devices for determination is the subject is emitting the snoring.02-25-2010
20100298731Monitoring device and method - The present invention relates to a method and an apparatus for providing information relating to disturbances and/or disease pattern based on a patient's breathing parameters. Preferably, the apparatus has multiple functionalities and provides information relating to different disturbances and/or disease patterns. In particular, the present invention relates to an apparatus for identifying different indications of a patient, the apparatus comprising a sensor, for sensing signals indicative of a patient's breathing, a processing unit, for processing and/or analyzing the signals, and display means for displaying the outcome of the processing and/or analysis. The corresponding method for identifying different indications of a patient comprises the steps of sensing signals indicative of a patient's breathing, processing and/or analyzing the signals, and displaying the outcome of the processing and/or analysis.11-25-2010
20100298730METHOD AND APPARATUS FOR MEASURING BREATHING RATE - An example method and apparatus for measuring the breathing rate from the photoplethysmogram signal (PPG) uses auto-regressive modelling of the signal. The PPG signal is windowed in overlapping windows of typically 30 seconds' length, overlapping by 25 seconds, to obtain discrete sections of the signal and each section is low-pass filtered, downsampled and detrended and then AR modelled using an all-pole auto-regressive (AR) model. The AR model allows identification of the dominant frequencies in the signal and the pole corresponding to the breathing rate is identified by considering its magnitude and the breathing rate it represents. Each 30 second window gives a breathing rate estimate and use of successive windows displaced by 5 seconds results in a breathing rate estimate every 5 seconds. The time series of breathing rate estimates can be Kalman filtered to reject measurements which have a large change in magnitude or represent a large change in breathing rate. The measurements may also be fused with measurements from another sensor.11-25-2010
20100004553Device for Eliminating Liquid Condensation in a Mouthpiece - In a device for elimination of liquid condensation in a mouthpiece intended to be used in the analysis of exhalation air a tube shaped body of a heat conducting material is provided with heating means and is circumvented by a mouthpiece preferably for one time use.01-07-2010
20120253215Dual path noise detection and isolation for acoustic ambulatory respiration monitoring system - Dual path noise detection and isolation for an acoustic respiration monitoring system detects noise in an acoustic signal recording lung sounds using two discrete noise detection techniques. A first technique detects portions of the signal that exhibit long-term, moderate amplitude noise by analyzing cumulative energy in the signal. A second technique detects portions of the signal that exhibit short-term, high amplitude noise by analyzing peak energy in the signal. Noisy portions of the signal are isolated using the combined results of the dual path detection. A respiration parameter is estimated using the signal without resort to the noisy portions and information based at least in part on the respiration parameter is outputted.10-04-2012
20120190996SLEEP APNEA SYNDROME TESTING APPARATUS, TEST METHOD FOR SLEEP APNEA SYNDROME AND TANGIBLE RECORDING MEDIUM RECORDING PROGRAM - A sleep apnea syndrome testing apparatus includes: an analyzing unit that analyzes every unit time a sound signal resulting from a subject during sleep; a determining unit that determines whether a unit time of the sound signal includes a breath sound or a characteristic sound produced when a patient with sleep apnea syndrome recovers from an apneic state into a breathing state, and the determining unit that determines that the sleep state of the subject in the unit time is any one of “breathing restored state,” “state with breathing,” and “state without breathing;” a storage unit in which a sleep state of the subject in each unit time is stored; and a detecting unit that detects an apneic state of the subject if a history of the sleep states of the subject indicates at least a transition from the “state without breathing” to the “breathing restored state.”07-26-2012
20130184601APPARATUS AND METHOD FOR DIAGNOSING OBSTRUCTIVE SLEEP APNEA - An embodiment of the invention provides a method of diagnosing obstructive sleep apnea, the method comprising: acquiring a sleep sound signal comprising sounds made by a person during sleep; detecting a plurality of snore sounds in the sleep sound signal; determining a set of mel-frequency cepstral coefficients for each of the snore sounds; determining a characterizing feature for the sleep sound signal responsive to a sum of the variances of the cepstral coefficients; and using the characterizing feature to diagnose obstructive sleep apnea in the person.07-18-2013
20110319783GAS MIXING DEVICE FOR AN AIR-WAY MANAGEMENT SYSTEM - The invention relates to a gas mixing device (12-29-2011
20120101399Respiratory Monitoring System - A system for determining whether a subject is breathing through his nose or mouth and providing feedback to the user. The feedback may take the form of an alarm signal or an instruction to the user. The system advantageously uses an acoustic sensor placed in the user's suprasternal notch.04-26-2012
20120289850MONITORING RESPIRATION WITH A THERMAL IMAGING SYSTEM - What is disclosed is a system and method for monitoring respiration of a subject or subject of interest using a thermal imaging system with single or multiple spectral bands set to a temperature range of a facial region of that person. Temperatures of extremities of the head and face are used to locate facial features in the captured thermal images, i.e., nose and mouth, which are associated with respiration. The RGB signals obtained from the camera are plotted to obtain a respiration pattern. From the respiration pattern, a rate of respiration is obtained. The system includes display and communication interfaces wherein alerts can be activated if the respiration rate falls outside a level of acceptability. The teachings hereof find their uses in an array of devices such as, for example, devices which monitor the respiration of an infant to signal the onset of a respiratory problem or failure.11-15-2012
20120150054RESPIRATORY CONDITION ANALYSIS APPARATUS, RESPIRATORY CONDITION DISPLAY APPARATUS, PROCESSING METHOD THEREIN, AND PROGRAM - A respiratory condition analysis apparatus includes a respiratory signal acquisition section configured to acquire a time-series respiratory signal including respiratory sound of a living body, a respiratory segment identification section configured to identify a respiratory segment that is a time segment including the respiratory sound in the respiratory signal, a feature value generation section configured to generate a predetermined feature value of the respiratory signal for the identified respiratory segment, and a respiratory abnormality degree generation section configured to generate a degree of abnormality of the respiratory sound included in the respiratory signal on the basis of the feature value.06-14-2012
20110144516RELATIVE CONTRIBUTION OF THORACIC MUSCLES TO BREATHING - A method and apparatus for evaluating the relative contribution of the diaphragm versus other thoracic muscles to breathing by obtaining measurements of parameters that correlate with changes in thoracic cavity and intra-abdominal cavity pressures over identical time increments and organizing the measurement data in manner that reveals whether the pressures changes are characteristic of the pattern of contemporaneous pressure changes in those cavities that accompany contraction and/or relaxation of the diaphragm muscles or whether the pressure changes are characteristic of the pattern of contemporaneous pressure changes in those cavities that accompany contraction and/or relaxation of the intercostal muscles.06-16-2011
20130178756BREATH DETECTION DEVICE AND BREATH DETECTION METHOD - Whether a breath sound is contained in a current frame is determined by using a characteristic that a breath sound is small in autocorrelation and large in cross-correlation. Specifically, a harmonic-wave-structure estimating unit finds autocorrelation on the basis of a frequency spectrum of the current frame. A cross-correlation estimating unit finds cross-correlation between the frequency spectrum of the current frame and a frequency spectrum of a previous frame containing a breath sound. A breath detecting unit compares a value of a constant multiple of a value of the autocorrelation with a value of the cross-correlation, and, when the value of the cross-correlation is larger, determines that a breath sound is contained in the current frame.07-11-2013
20080221468Prediction of disordered breathing - An approach for predicting disordered breathing involves detecting one or more conditions associated with disordered breathing. The detected conditions are compared to disordered breathing prediction criteria. A prediction of disordered breathing is performed based on the comparison of the detected conditions to the prediction criteria. At least one of comparing the detected conditions to the prediction criteria and predicting disordered breathing is performed at least in part implantably.09-11-2008
20080221467Method and systms for regional assessment of pulmonary function - A method and system for regional assessment in two or more regions of an individual's lungs. The system includes a plurality of transducers configured to be fixed over the thorax. Each transducer generates a signal P(x09-11-2008
20120253216Respiration analysis using acoustic signal trends - The present invention isolates respiration phases in an acoustic signal using trend analysis. Once respiration phases are isolated, they are used to estimate respiration parameters. An exemplary method comprises receiving an acoustic signal recording body sounds; identifying candidate peaks at maxima of the signal; identifying candidate valleys at minima of the signal; selecting significant peaks from among the candidate peaks using heights of the candidate peaks; selecting significant valleys from among the candidate valleys using heights of the candidate valleys; detecting silent phases in the signal based at least in part on rise rates from the significant valleys; isolating respiration phases in the signal based at least in part on the significant valleys and the silent phases; calculating respiration parameter estimates based at least in part on the respiration phases; and outputting the respiration parameter estimates.10-04-2012
20120253214Multistage method and system for estimating respiration parameters from acoustic signal - A multistage system and method for estimating respiration parameters from an acoustic signal. At a first stage, the method and system detect and isolate portions of the signal that exhibit long-term, moderate amplitude noise by analyzing cumulative energies in the signal, and portions of the signal that exhibit short-term, high amplitude noise by analyzing peak energies in the signal. At a second stage, the method and system filter heart sound from the signal energy envelope by applying an adaptive filter that minimizes the loss of respiration sound. At a third stage, the system and method isolate respiration phases in the signal by identifying trends in the energy envelope. Once respiration phases are isolated, these phases are used to estimate respiration parameters, such as respiration rate and I/E ratio.10-04-2012
20130172767SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION USING PHASE LOCKED LOOP - A patient monitoring system may receive a physiological signal such as a photoplethysmograph (PPG) signal that exhibits frequency and amplitude modulation based on respiration. A phase locked loop may generate a frequency demodulated signal and an amplitude demodulated signal from the PPG signal. An autocorrelation sequence may be generated for each of the frequency demodulated signal and the amplitude demodulated signal. The autocorrelation sequences may be combined and respiration information may be determined based on the combined autocorrelation sequence.07-04-2013
20110224567BIDIRECTIONAL PHYSIOLOGICAL INFORMATION DISPLAY - A patient monitor for displaying a physiological signal can include a visual element having a middle portion indicative of a transition in the physiological signal between physiological states. The visual element can also include first and second extremity portions, the first extremity portion extending from the middle portion in a first direction and the second extremity portion extending from the middle portion in a second direction. The visual element can also include an actionable value indicator to specify a value about the middle portion and the first and second extremity portions. The patient monitor can also include a processor configured to cause the value indicator to actuate in both the first and second directions according to changes in the physiological signal.09-15-2011
20110257549APPARATUS FOR ASSESSING THE STRESS ON THE CIRCULATION OF A PERSON DURING ASSISTED BREATHING BY MEANS OF A RESPIRATOR - The invention relates to an apparatus with sensing means suitable for sensing the inspiratory phase and the expiratory phase of each respiratory cycle of a respirated person from in each case at least one minimum and maximum amplitude of a circulation value within a single respiratory cycle, and with a computing device for calculating a variation of the amplitudes of the circulation value occurring within a said respiratory cycle. It is distinguished by the fact that the computing device is set up to assign each amplitude of the circulation value either to the inspiratory phase or to the expiratory phase and to determine the one extreme amplitude of the circulation value from the amplitudes assigned to the inspiratory phase and the other extreme amplitude of the circulation value from the amplitudes assigned to the expiratory phase, and to ascertain from the amplitude variation between the extreme amplitudes in the two phases of the respiratory cycle whether the haemodynamic stress caused by the assisted breathing is too high.10-20-2011
20130150744SYSTEM AND METHOD FOR DETERMINING ANTIBIOTIC EFFECTIVENESS IN RESPIRATORY DISEASED ANIMALS USING AUSCULATION ANALYSIS - A system and method are provided for diagnosis of animal respiratory diseases using auscultation techniques. Animal lung sounds are recorded and stored as digitized data. Algorithms are applied to the data producing an output indicative of the health of the animal. Another method determines effectiveness of antibiotics administered to animals based upon observed relationships between lung score categories obtained from auscultation. A comparison is made between sample populations of animals that receive different classifications of antibiotics, and this data is compared to lung score categories observed for each of the animals that received the antibiotics. A statistical analysis is conducted to confirm statistical differences in case fatality rates between lung score categories. Insignificant differences in mortality rates across a range of lung score categories indicates the particular antibiotic administered is not effective, whereas a reduced fatality rate associated with lower lung scores indicates a level of antibiotic effectiveness.06-13-2013
20130150745SYSTEM AND METHOD FOR GENERATING A TREND PARAMETER BASED ON RESPIRATION RATE DISTRIBUTION - Systems and methods provide for assessing the heart failure status of a patient and, more particularly, to generating a trend parameter based on a distribution of the patient's respiration rate. Systems and methods provide for detecting, using an implantable device or a patient-external device, patient respiration and computing a respiration rate based on the detected patient respiration. A distribution of the respiration rate is calculated, and a trend parameter based on the respiration rate distribution is generated. The trend parameter is indicative of a patient's heart failure status. An output signal indicative of the patient's heart failure status may be generated based on the trend parameter.06-13-2013
20130158424METHOD AND SYSTEM FOR DETECTING RESPIRATORY INFORMATION - The invention proposes a method of detecting respiratory information of a user. The method comprises a step of instructing the user to perform on a device a movement reflecting his respiratory action; a step of generating by said device, a signal reflecting said movement; and a step of deriving the user's respiratory information from said signal. By using this method, the respiratory information is easily detected without attaching any sensor on the user's chest.06-20-2013
20130197383SYSTEM FOR EXTRACTING RESPIRATORY RATES FROM A PULSE OXIMETER - Accurate AR method for extracting respiratory rates directly from a pulse oximeter and accurate methods of extracting respiratory rates directly from a pulse oximeter under low signal-to-noise ratio (SNR) conditions.08-01-2013
20130204150SYSTEM FOR ELECTROENCEPHALOGRAPHIC DETECTION OF AN INADEQUACY BETWEEN THE STATE OF A PATIENT PLACED UNDER VENTILATORY SUPPORT AND THE SETTING OF THE MACHINE USED FOR THIS SUPPORT, AND USE OF THIS DETECTION TO ADJUST THE SETTING - The invention relates to a system for electroencephalographic detection of an improper adjustment of a ventilator used on a mammal. The system includes an electroencephalograph, capable of measuring, as a function of time, an electroencephalographic signal representative of a breathing process; and an input for receiving a respiratory initiation signal, different from the electroencephalographic signal, capable of indicating a respiratory initiation time. The detection system further includes means for specifying a beta frequency band comprised between 15 and 30 Hz and with a width comprising between 5 and 10 Hz; means for processing the measured electroencephalographic signal, configured for processing the measured electroencephalographic signal as it is being acquired, in the sole specified beta frequency band; and means for identifying, for each breathing cycle, an improper adjustment of the ventilator from the electroencephalographic signals processed in the sole beta frequency band.08-08-2013
20130211274Determining Usability of an Acoustic Signal for Physiological Monitoring Using Frequency Analysis - An acoustic physiological monitoring system and method wherein the usability for physiological monitoring of time segments of an acoustic signal recording body sounds is determined using frequency analysis. A time segment of the acoustic signal is filtered into a target portion in a target frequency band and a non-target portion in a non-target frequency band. Energies of the target portion and the non-target portion are computed. A usability indicator for the time segment is computed using the energies. The usability of the time segment is determined using the usability indicator. A physiological parameter estimate is selectively calculated using the time segment based on the usability of the time segment. Finally, information based on the physiological parameter estimate is outputted.08-15-2013

Patent applications in class Respiratory

Patent applications in all subclasses Respiratory