| Patent application number | Description | Published |
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| 20090082651 | Selection of ensemble averaging weights for a pulse oximeter based on signal quality metrics - A method and a system for ensemble averaging signals in a pulse oximeter, including receiving first and second electromagnetic radiation signals from a blood perfused tissue portion corresponding to two different wavelengths of light, obtaining an assessment of the signal quality of the electromagnetic signals, selecting weights for an ensemble averager using the assessment of signal quality, and ensemble averaging the electromagnetic signals using the ensemble averager. | 03-26-2009 |
| 20090171167 | System And Method For Monitor Alarm Management - Embodiments disclosed herein may include a method and system for determining patient-specific alarm thresholds for monitoring the patient's physiological parameters. For example, in an embodiment, the patient's age, weight, height, diagnosis, medications and/or other factors may affect his or her normal heart rate, blood oxygen saturation, and/or other physiological parameters. Accordingly, in an embodiment, information specific to or generally applicable to the patient may be supplied to a monitoring system to enable determination of the appropriate maximum and minimum thresholds. In an embodiment, if the patient exceeds one of the personalized thresholds, the monitoring system may alert a caregiver that there is a problem. | 07-02-2009 |
| 20090171173 | SYSTEM AND METHOD FOR REDUCING MOTION ARTIFACTS IN A SENSOR - Embodiments disclosed herein may include a patient sensor which has a low-friction exterior coating. In an embodiment, the exterior surface of the sensor may come into contact with external items, such as, for example, bed linens, clothing, unintended parts of the patient's body, or other people. The low-friction coating disposed on the exterior of the sensor may include a material having a relatively low coefficient of friction with respect to these external items. In an embodiment, the low-friction material may include, for example, a fluoropolymer, a polypropylene, or a polyethylene. Additionally, in an embodiment, an internal surface of the sensor that is in contact with the patient may have a relatively high-friction coating, such as an adhesive. In an embodiment, a stack of adhesive layers may be disposed on the internal surface around one or more light emitting and/or detecting optics. | 07-02-2009 |
| 20090221889 | Pulse Oximeter With Alternate Heart-Rate Determination - A pulse oximeter which determines multiple heart rates, and selects between them based on the metrics of only one of the heart rate calculations. A primary heart rate calculation method is selected, and is used unless its metrics indicate questionable accuracy, in which case an alternative rate calculation is available and is used instead. | 09-03-2009 |
| 20090240126 | Method And System For Classification of Photo-Plethysmographically Detected Respiratory Effort - Embodiments disclosed herein may include systems and methods for determining a patient's respiratory effort and blood oxygen saturation based on data acquired from a pulse oximetry sensor and analyzing the parameters in conjunction with each other. For example, the respiratory effort may be determined based on a photo-plethysmographic waveform generated from light attenuation detected by the sensor, and the blood oxygen saturation may be a pulse-based estimate of arterial blood oxygen saturation determined from the detected attenuation. Analysis of the parameters may enable detection and classification of apnea (e.g., obstructive or central) or another underlying cause for respiratory instability. Furthermore, the measured respiratory effort may be compared to respiratory effort supplied by a ventilator to ensure proper sensor placement before enabling automatic adjustment of ventilator settings. | 09-24-2009 |
| 20090241956 | METHOD FOR CONTROLLING DELIVERY OF BREATHING GAS TO A PATIENT USING MULTIPLE VENTILATION PARAMETERS - The disclosure provides a method for controlling the delivery of a breathing gas to a patient. The method may include regulating the fractional inspired oxygen (FiO | 10-01-2009 |
| 20090241957 | BREATHING ASSISTANCE SYSTEMS WITH LUNG RECRUITMENT MANEUVERS - The disclosure provides a method for controlling the delivery of a breathing gas to a patient including automatic lung recruitment maneuvers. The method may include regulating the FiO | 10-01-2009 |
| 20090241958 | METHOD FOR SELECTING TARGET SETTINGS IN A MEDICAL DEVICE - The disclosure provides a method for controlling the delivery of a breathing gas to a patient. The method may include regulating the delivery of the breathing gas delivered to the patient, determining a value for a first ventilation parameter, comparing the determined value of the first ventilation parameter to a pre-determined target value for the first ventilation parameter, automatically adjusting the breathing gas delivered to the patient in response to the comparison between the determined value of the first ventilation parameter and the pre-determined target value for the first ventilation parameter, and automatically determining a new target value for the first ventilation parameter based at least in part on the determined value of the first ventilation parameter. | 10-01-2009 |
| 20090247848 | Reducing Nuisance Alarms - Embodiments disclosed herein may describe systems and methods for reducing nuisance alarms using probability and/or accuracy of a measured physiological parameter, such as the pulse rate or SpO2 measurement generated by a pulse oximeter. Embodiments may include methods for adjusting a predetermined alarm threshold based on the probability distribution of the estimated pulse rate and/or oxygen saturation of a patient's blood. | 10-01-2009 |
| 20090287070 | Estimation Of A Physiological Parameter Using A Neural Network - A neural network is used to combine one or more estimates of a physiologic parameter with one or more associated signal quality metrics, creating a more accurate estimate of said physiologic parameter, as well as a second estimate of the accuracy of said physiologic parameter estimate. | 11-19-2009 |
| 20090320836 | Method For Regulating Treatment Based On A Medical Device Under Closed-Loop Physiologic Control - Embodiments of the present disclosure are directed to a system and method for automated medical treatment. Specifically, the disclosure is directed to a first controller capable of monitoring a physiological parameter of a patient and supplying the patient with a delivery parameter based at least in part on the physiological parameter to control the physiological parameter. Further, present embodiments include a second controller capable of determining a therapeutic procedure to be performed on the patient based at least in part on analysis of the delivery parameter, and automatically initiating an alert indicative of the therapeutic procedure and/or automatically performing the therapeutic procedure. | 12-31-2009 |
| 20090326348 | METHOD FOR IMPROVED OXYGEN SATURATION ESTIMATION IN THE PRESENCE OF NOISE - The present disclosure relates, according to some embodiments, to devices, systems, and methods for estimating a physiological parameter in the presence of noise. For example, the disclosure relates, in some embodiments, to devices, systems, and methods for assessing (erg., estimating, measuring, calculating) oxygen saturation (SpO | 12-31-2009 |
| 20100081912 | Ultrasound-Optical Doppler Hemometer and Technique for Using the Same - According to embodiments, a sensor assembly and/or systems for ultrasound-optical measurements may provide information related to hemodynamic parameters. An ultrasound beam may be used to generate a Doppler field for optical elements of a sensor assembly. By combining information received from ultrasound and optical elements of the sensor assembly, more accurate values for hemodynamic parameters may be determined. | 04-01-2010 |
| 20100081944 | Systems and Methods for Recalibrating a Non-Invasive Blood Pressure Monitor - Techniques for non-invasive blood pressure monitoring are disclosed. Data corresponding to a patient may be received from a hospital information system. The data may include, for example, drug administration data, medical procedure data, medical equipment data, or a combination thereof. Whether a blood pressure monitoring system needs to be recalibrated may be determined, based at least in part on the received data. If it is determined that the blood pressure monitoring system needs to be recalibrated, the recalibration may be performed and at least one blood pressure measurement of the patient may be computed using the recalibrated blood pressure monitoring system. | 04-01-2010 |
| 20100249549 | Indicating The Accuracy Of A Physiological Parameter - This disclosure describes systems and methods for displaying information that describes the accuracy of estimated values of physiological parameters. As part of the process of estimating a physiological parameter, the data used for the estimation are further analyzed to determine one or more statistical parameters indicative of the accuracy of the estimate. These statistical parameters are then displayed to the caregiver in order to provide the caregiver additional information concerning the estimated value. In the systems and methods described herein, one or more probability analyses are performed on the data used to generate the estimate of the physiological parameter. The analyses may include calculating the accuracy, confidence interval or some other statistical parameter representative of the accuracy of the estimate of the physiological parameter from the variations in the data An indication of the accuracy and/or an indication of the calculated probability may then be displayed to a caregiver or user. | 09-30-2010 |
| 20100292548 | Method And Apparatus For Detecting And Analyzing Variations In A Physiologic Parameter - The present disclosure is generally directed to identifying and/or analyzing high resolution variations in a measured physiologic parameter, such as blood oxygen saturation (SpO | 11-18-2010 |
| 20100332173 | SYSTEMS AND METHODS FOR ASSESSING MEASUREMENTS IN PHYSIOLOGICAL MONITORING DEVICES - Methods and systems are provided for deriving and analyzing shape metrics, including skewness metrics, from physiological signals and their derivatives to determine measurement quality, patient status and operating conditions of a physiological measurement device. Such determinations may be used for any number of functions, including indicating to a patient or care provider that the measurement quality is low or unacceptable, alerting a patient or care provider to a change in patient status, triggering or delaying a recalibration of a monitoring device, and adjusting the operating parameters of a monitoring system. | 12-30-2010 |
| 20110071368 | Medical Device Interface Customization Systems And Methods - Embodiments of the present disclosure relate to customization of user interfaces for medical devices. According to certain embodiments, patient monitors may include a device body designed to interface with interchangeable and removable faceplates. The faceplates may include input devices for controlling the patient monitor. Further, the properties of the input devices, such as the size, shape, labels, type, and location, may vary between faceplates. Further, in certain embodiments, the faceplates may include a memory for storing preferences associated with the user interface. | 03-24-2011 |
| 20110077470 | Patient Monitor Symmetry Control - Embodiments of the present disclosure relate to customization of user interfaces for medical devices. According to certain embodiments, patient monitors may include a symmetry control feature that adjusts the position of touch sensitive inputs shown on a display of the patient monitor. The symmetry control feature may allow a user to move the touch sensitive inputs from one side of the display to another to allow a user to access the touch sensitive inputs without blocking a portion of the display that displays patient physiological data. Further, in certain embodiments, the symmetry control feature may vary the location of one or more touch sensitive inputs based on user identification information received through a communication interface. | 03-31-2011 |
| 20110077485 | Method Of Analyzing Photon Density Waves In A Medical Monitor - A monitoring system that may include an emission feature capable of emitting light into tissue, a modulator capable of modulating the emitter at a modulation frequency generally in a range of about 50 MHz to 3.0 GHz to generate resolvable photon density waves, a detection feature capable of detecting photons of the photon density waves after passage through the tissue and capable of providing a distribution of detected photons over a time period for the photon density waves, and a processor capable of calculating a skewness of the distribution and making determinations relating to a value of a physiologic parameter of the tissue based at least in part on the skewness of the distribution. | 03-31-2011 |
| 20110077547 | Spectroscopic Method And System For Assessing Tissue Temperature - According to various embodiments, a medical system and method for determining tissue temperature may include a spectroscopic sensor. The spectroscopic sensors may be configured to provide information about changes in water absorption profiles at one or more absorption peaks. Such sensors may be incorporated into ablation systems for tissue ablation. Temperature information may be used to determine the scope, volume, and/or depth of the ablation. | 03-31-2011 |
| 20110092785 | Selection of Ensemble Averaging Weights for a Pulse Oximeter Based on Signal Quality Metrics - A pulse oximeter system is presently disclosed. The pulse oximeter system includes a processor and circuitry. The processor and circuitry are configured to receive light waveforms from a sensor, determine at least one signal quality metric for the light waveforms, calculate at least one weight using a continuously variable weighting function based on the at least one signal quality metric, and ensemble average the light waveforms using the at least one calculated weight. | 04-21-2011 |
| 20110118557 | Intelligent User Interface For Medical Monitors - An intelligent learning process for a user interface of a medical monitor is disclosed. The medical monitor may record user statistics and cluster groups based on settings, configurations, and actions captured by the user statistics. The medical monitor may create classes of users based on the groups and then classify users into classes based on the user statistics. The user interface of the monitor may be adapted based on the user's class. In other embodiments, a central station may access user statistics from multiple monitors and adapt a user interface for the monitors based on the statistics. | 05-19-2011 |
| 20110152652 | SYSTEM AND METHOD FOR PULSE RATE CALCULATION USING A SCHEME FOR ALTERNATE WEIGHTING - Embodiments of the present invention relate to a method for analyzing pulse data. In one embodiment, the method comprises receiving a signal containing data representing a plurality of pulses, the signal generated in response to detecting light scattered from blood perfused tissue. Further, one embodiment includes performing a pulse identification or qualification algorithm on at least a portion of the data, the pulse identification or qualification algorithm comprising at least one constant, and modifying the at least one constant based on results obtained from performing the pulse identification or qualification algorithm, wherein the results indicate that a designated number of rejected pulses has been reached. | 06-23-2011 |
