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| 20080269813 | METHOD AND APPARATUS FOR SUBCUTANEOUS ECG VECTOR ACCEPTABILITY AND SELECTION - An implantable medical device system and associated method select subcutaneous sensing electrodes for use in monitoring the heart rhythm. A subset of multiple sensing vectors is selected from a number of electrodes positioned at a first subcutaneous location and one electrode positioned at a second subcutaneous location. The subset of sensing vectors includes one vector that includes the electrode positioned at the second location. A signal quality parameter corresponding to each of the sensing vectors of the subset is determined. | 10-30-2008 |
| 20100076322 | METHOD AND APPARATUS FOR DETERMINING A RESPIRATION PARAMETER IN A MEDICAL DEVICE - A method of determining a respiration parameter in a medical device in which pressure signals are sensed to generate corresponding sample points, and a breath detection threshold is continuously adjusted in response to the generated sample points to generate a current adjusted breath detection threshold. A current generated sample point is compared to the current adjusted breath detection threshold, and the continuous adjusting of the breath detection threshold is suspended and the breath detection threshold is equal to the most current adjusted breath detection threshold generated prior to the suspending in response to the comparing. A next sample point, generated subsequent to the suspending, is compared to the set breath detection threshold, and the respiration parameter is determined in response to the comparing of a next sample point to the set breath detection threshold. | 03-25-2010 |
| 20100076323 | METHOD AND APPARATUS FOR DETERMINING A RESPIRATION PARAMETER IN A MEDICAL DEVICE - An apparatus for determining a respiration parameter in a medical device in which a pressure sensor senses pressure signals, and a signal processor, coupled to the pressure sensor, receives the sensed pressure signals and generates corresponding sample points. A microprocessor continuously adjusts a breath detection threshold in response to the generated sample points to generate a current adjusted breath detection threshold, compares a current generated sample point to the current adjusted breath detection threshold, suspends the continuous adjusting of the breath detection threshold and sets the breath detection threshold equal to the most current adjusted breath detection threshold generated prior to the suspending, and determines the respiration parameter in response to a comparing of a next generated sample point to the set breath detection threshold | 03-25-2010 |
| 20100076324 | METHOD AND APPARATUS FOR DETECTING RESPIRATORY EFFORT IN A MEDICAL DEVICE - A medical device for determining a respiratory effort having a pressure sensor to sense pressure signals, a housing having system components positioned therein, and a microprocessor positioned within the housing, wherein the microprocessor detects an inspiration and an expiration in response to the pressure signals, detects a breath in response to the detected inspiration and the detected expiration, and determines the respiratory effort in response to the detected breath. | 03-25-2010 |
| 20100076325 | METHOD AND APPARATUS FOR DETERMINING RESPIRATORY EFFORT IN A MEDICAL DEVICE - A method of determining respiratory effort in a medical device in which pressure signals are sensed to generate corresponding sample points, an inspiration and an expiration are detected in response to the sensed pressure signals, a breath is detected in response to the detected inspiration and the detected expiration, and the respiratory effort is determined in response to the detected breath. | 03-25-2010 |
| 20100076514 | FILTERING OF A PHYSIOLOGIC SIGNAL IN A MEDICAL DEVICE - A system and method for filtering a pressure signal in a medical device in which a sensor terminal senses the pressure signal, an electrode terminal receives cardiac electrical signals, a signal filtering system filters the sensed pressure signal in response to a determined heart rate to generate a heart-rate dependent frequency response, and a microprocessor derives a respiration signal in response to the heart rate dependent frequency response, and determines metrics of hemodynamic function in response to the derived respiration signal. | 03-25-2010 |
| 20110105927 | DETECTION OF WAVEFORM ARTIFACT - An implantable medical device system including a physiological sensor detects signal artifact in a signal waveform acquired by the sensor. Features of individual waveforms in the sensor signal are extracted. Sample waveforms are classified by expert observation into at least two classes including an artifact class. A distribution range for each of the extracted features from the sample waveforms is determined for each of the classes. Waveform classification criteria are established in response to the determined distribution ranges. | 05-05-2011 |
| 20110152698 | METHOD AND APPARATUS FOR BLOOD PRESSURE WAVEFORM BASELINE ESTIMATION AND REMOVAL - An implantable medical device system including an implantable blood pressure sensor extracts a baseline signal from the sensed blood pressure signal and subtracts the extracted baseline signal from the sensed blood pressure signal to obtain a corrected pressure monitoring signal. The corrected pressure signal is monitored to detect a cardiac-related condition. | 06-23-2011 |
| 20110160787 | OPTIMIZATION OF AV DELAY USING VENTRICULAR PRESSURE SIGNAL - An implantable medical device system including an intraventricular pressure sensor controls an atrioventricular (AV) delay based on the intraventricular pressure signal. An atrial kick pressure waveform corresponding to active contraction of an atrial chamber is detected from the intraventricular pressure signal. In one embodiment, a time interval corresponding to the atrial kick pressure waveform is measured. An AV delay is set in response to the measured time interval. | 06-30-2011 |
| 20110270109 | METHOD AND APPARATUS FOR DETECTING AND DISCRIMINATING TACHYCARDIA - A medical device and associated method obtaining cardiac event intervals corresponding to a tachycardia interval. Evidence of a rhythm breaking point is obtained in response to sensing a cardiac event having a morphology corresponding to a supraventricular beat. A non-treatable rhythm is detected in response to the plurality of cardiac event intervals and the evidence of the rhythm breaking point. | 11-03-2011 |
| 20120029364 | MEASUREMENT OF CARDIAC CYCLE LENGTH AND PRESSURE METRICS FROM PULMONARY ARTERIAL PRESSURE - Various techniques for measuring cardiac cycle length and pressure metrics based on pulmonary artery pressures are described. One example method described includes identifying a point within a derivative signal of a cardiovascular pressure signal without reference to electrical activity of a heart, initiating a time window from the identified point in the derivative signal, identifying a point within the cardiovascular signal within the time window, and determining at least one of a systolic pressure or diastolic pressure based on the identified point. | 02-02-2012 |
| 20120029365 | MEASUREMENT OF CARDIAC CYCLE LENGTH AND PRESSURE METRICS FROM PULMONARY ARTERIAL PRESSURE - Various techniques for measuring cardiac cycle length and pressure metrics based on pulmonary artery pressures are described. One example method described includes identifying a point within a derivative signal of a cardiovascular pressure signal without reference to electrical activity of a heart, initiating a time window from the identified point in the derivative signal, identifying a point within the cardiovascular signal within the time window, and determining at least one of a systolic pressure or diastolic pressure based on the identified point. | 02-02-2012 |
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| 20110302020 | SYSTEM AND METHOD FOR NETWORKED LOYALTY PROGRAM - The present invention provides a system for implementing a loyalty program on a network-wide level. The system associates UPC and SKU data on a network level to reward consumers and/or to analyze the data for a variety of business purposes, such as market segmentation analyses and/or analyses relating to consumer spending behaviors or patterns, for example. In accordance with one aspect of the invention, the network may comprise any number of participants, including consumers (such primary and supplementary members of an aggregate consumer account), retailers (and any of their employees), manufacturers, third-party providers, and the like. In accordance with one aspect, the system enables participation by supplementary members who are associated with a primary member and, in this manner, facilitates the tracking of supplementary member purchasing behavior, reward points earning behavior, and reward points redemption behavior. In accordance with another aspect, the system permits instant enrollment of consumers at a retailer point-of-sale using information that the retailer has previously gathered from the consumer. In accordance with another aspect, the system facilitates the compilation of a purchaser profile, which may be used for a variety of purposes, including various types of marketing analyses. | 12-08-2011 |
