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| Number | Title | Issue Date |
| 8185201 | Apparatus and methods for calculating caloric expenditure using posture Systems and methods for estimating caloric expenditure. The systems can include a physiological sensor to measure a patient's physical activity, and a posture sensor to measure the patient's posture. An estimated caloric expenditure can be calculated based on data f... | 05/22/2012 |
| 8165676 | Optical sensor and method for detecting a patient condition An implantable medical device for monitoring tissue perfusion that includes a light source emitting light having a light wavelength corresponding to a blue to ultraviolet light spectrum and a light detector receiving light emitted by the light source and scattered b... | 04/24/2012 |
| 8160703 | Apparatus, software, and methods for cardiac pulse detection using a piezoelectric sensor Signal data obtained from a piezoelectric sensor placed on a patient's body is used to detect the presence of a cardiac pulse. The piezoelectric sensor has a transducing element adapted to sense movement due to a cardiac pulse and produce piezoelectric signal data i... | 04/17/2012 |
| 8145307 | Method and apparatus for enhancing treatable arrhythmia detection specificity by using accumulated patient activity A method and apparatus for detecting a cardiac event in a medical device determine an activity level count from an activity sensor signal for each of a number of time segments, store an activity level count for each of the time segments in a histogram, and accumulat... | 03/27/2012 |
| 8116869 | Cardiopulmonary functional status assessment via metabolic response detection by implantable cardiac device An implantable cardiac device is configured and programmed to assess a patient's cardiopulmonary function by evaluating the patient's minute ventilation response. Such evaluation may be performed by computing a minute ventilation response slope, defined as the ratio... | 02/14/2012 |
| RE42836 | Method for assessing cardiac functional status A method for assessing cardiac function suitable for incorporation into an implantable cardiac rhythm management device. By measuring daily exertion levels in accordance with the invention, an assessment of cardiac function can be made that has been found to correla... | 10/11/2011 |
| 8019418 | Self-calibrating rate-adaptive pacemaker A system and method for automatically adjusting the operating parameters of a rate-adaptive cardiac pacemaker. In accordance with the method, maximum exertion levels attained by the patient are measured at periodic intervals and stored. The stored maximum exertion l... | 09/13/2011 |
| 7920919 | Morphology based motion detection for sensors sensitive to motion induced noise Provided herein are implantable systems, and methods for use therewith, for estimating a level of noise in a signal produced by an implantable sensor that is sensitive to motion induced noise. Sample data is obtained that is representative of a signal produced by th... | 04/05/2011 |
| 7894901 | Apparatus and method for assessing cardiac therapy A patient's response to therapy such as CRT is assessed by cross correlation of a patient's evoked response and physical activity surrogates. Based on the cross correlation, a determination may be made as to whether or how much the therapy is helping the patient's p... | 02/22/2011 |
| 7869877 | Cardiopulmonary functional status assessment via heart rate response detection by implantable cardiac device An implantable cardiac device is configured and programmed to assess a patient's cardiopulmonary function by evaluating the patient's heart rate response. Such evaluation may be performed by computing a heart rate response slope, defined as the ratio of an increment... | 01/11/2011 |
| 7848811 | Posture sensor A system and method determines the posture of a body. The system is first calibrated by attaching it to, or implanted it into, a body, placing the body in particular postures, and generating spectral signatures for each of those postures. Thereafter, the system gene... | 12/07/2010 |
| 7844336 | Implantable medical device configured as a pedometer This document discusses, among other things, a system including an implantable medical device. The implantable medical device includes a control circuit and a motion sensing device. The motion sensing device is coupled to the control circuit, and the motion sensing ... | 11/30/2010 |
| 7792581 | Method and apparatus for treating diastolic heart failure Methods and systems for treating patients with diastolic heart failure (DHF) are disclosed which include slowing a patient's heart rate below its intrinsic rate, and controlling the rate using cardiac pacing therapy to improve LV filling and cardiac output. In certa... | 09/07/2010 |
| 7792583 | Collecting posture information to evaluate therapy A medical device delivers a therapy to a patient. Posture events are identified, e.g., a posture of the patient is periodically determined and/or posture transitions by the patient are identified, and each determined posture event is associated with a current therap... | 09/07/2010 |
| 7792582 | Active implantable medical devices, notably for pacing, resynchronization, defibrillation and/or cardioversion, having improved diagnosis of the patient's clinical status An active implantable medical device, preferably a device for pacing, resynchronization, defibrillation and/or cardioversion of a patient, that includes functionality that assists in the diagnosis of the patient's clinical status. This devices comprises circuits ( | 09/07/2010 |
| 7761159 | Cardiac rhythm pacing rate selection for automatic capture threshold testing Cardiac devices and methods that select pacing rates for automatic threshold tests based on a patient's hemodynamic need. A sensor-indicated pacing rate corresponding to a patient's hemodynamic need is determined. A test pacing rate is selected from either the senso... | 07/20/2010 |
| 7756579 | Implantable sensor A sensor which can be implanted in a body part to collect data relating to the body part, the sensor includes a jacket which has a side wall which can be deformed inwardly, and first and second ends. A sensor part is contained within the jacket, and fastened to the ... | 07/13/2010 |
| 7725187 | Motion detection for sensors sensitive to motion induced noise Provided herein are implantable systems, and methods for use therewith, for estimating a level of noise in a signal produced by an implantable sensor that is sensitive to motion induced noise. Sample data is obtained that is representative of a window of a signal pr... | 05/25/2010 |
| 7672725 | Method and apparatus for using heart rate variability as a safety check in electrical therapies A cardiac rhythm management system modulates the delivery of pacing and/or autonomic neurostimulation pulses based on heart rate variability (HRV). An HRV parameter being a measure of the HRV is produced to indicate a patient's cardiac condition, based on which the ... | 03/02/2010 |
| 7630766 | Exercise responsive pacemaker tuning method using Doppler blood flow measurements to adjust pacing for optimized flow A method of tuning a cardiac prosthetic pacing device includes (a) monitoring the flow output from the heart, and (b) adjusting the timing of pacing events by the cardiac prosthetic pacing device so as to optimise the flow from the heart under operational conditions... | 12/08/2009 |
| 7610089 | Implantable strain sensor for medical diagnostics Embodiments include strain sensor devices for detecting movement, morphological changes or other physical parameters within a patient's body tissue. Some embodiments are directed specifically to measuring parameters within a patient's heart and may also be configure... | 10/27/2009 |
| 7599741 | Systems and methods for improving heart rate kinetics in heart failure patients Adaptive rate pacing for improving heart rate kinetics in heart failure patients involves determining onset and sustaining of patient activity. The patient's heart rate response to the sustained activity is evaluated during a time window defined between onset of the... | 10/06/2009 |
| 7567839 | Self-calibrating rate-adaptive pacemaker A system and method for automatically adjusting the operating parameters of a rate-adaptive cardiac pacemaker. In accordance with the method, maximum exertion levels attained by the patient are measured at periodic intervals and stored. The stored maximum exertion l... | 07/28/2009 |
| 7493163 | Rate-adaptive therapy with sensor cross-checking A method and system for automatically adjusting the operating parameters of a rate-adaptive cardiac pacemaker in which maximum exertion levels attained by the patient are measured at periodic intervals and stored in order to compute or update a maximum exercise capa... | 02/17/2009 |
| 7447545 | Collecting posture information to evaluate therapy A medical device delivers a therapy to a patient. Posture events are identified, e.g., a posture of the patient is periodically determined and/or posture transitions by the patient are identified, and each determined posture event is associated with a current therap... | 11/04/2008 |
| 7433735 | Motion sensor A motion sensor, and an implantable cardiac stimulator incorporating such a motion sensor, has a fluid-type housing containing a fluid that includes at least one type of anisotropic molecules, the anisotropic molecules exhibiting an anisotropic property having a sta... | 10/07/2008 |
| 7409241 | Monitoring the sympathico-vagal activity by analysis of endocardiac acceleration in an active implantable medical device An active implantable medical device having a function for monitoring the sympathico-vagal activity by an analysis of endocardiac acceleration. The device collects at least one physiological parameter of the patient, analyzes that collected parameter and delivers at... | 08/05/2008 |
| 7404799 | System and method for detection of respiration patterns via integration of intracardiac electrogram signals Techniques are provided for tracking patient respiration based upon intracardiac electrogram signals or other electrical cardiac signals. Briefly, respiration patterns are detected by integrating cardiac electrical signals corresponding to individual paced cardiac c... | 07/29/2008 |
| 7392084 | Demand-based cardiac function therapy A method and device for delivering cardiac function therapy on a demand basis. An implantable device for delivering cardiac function therapy is programmed to suspend such therapy at periodic intervals or upon command from an external programmer. Measurements related... | 06/24/2008 |
| 7389143 | Cardiopulmonary functional status assessment via metabolic response detection by implantable cardiac device An implantable cardiac device is configured and programmed to assess a patient's cardiopulmonary function by evaluating the patient's minute ventilation response. Such evaluation may be performed by computing a minute ventilation response slope, defined as the ratio... | 06/17/2008 |
| 7371220 | System and method for real-time apnea/hypopnea detection using an implantable medical system Techniques are provided for detecting the onset of an episode of apnea/hypopnea substantially in real-time. A moving threshold is generated based on recent respiration cycles and differences are accumulated between amplitudes of new respiration cycles and the moving... | 05/13/2008 |
| 7366569 | Non-invasive method and apparatus for cardiac pacemaker pacing parameter optimization and monitoring of cardiac dysfunction A plethysmogram signal is sensed from a patient and provided to a programmer device for monitoring the condition of the patient and for optimizing pacing parameters of a cardiac device implanted in the patient. The programmer device analyzes the plethysmogram signal... | 04/29/2008 |
| 7361146 | System and method for detecting abnormal respiration via respiratory parameters derived from intracardiac electrogram signals Techniques are provided for tracking patient respiration based upon intracardiac electrogram (IEGM) signals or other electrical cardiac signals. Briefly, respiration patterns are detected based upon cycle-to-cycle changes in morphological features associated with in... | 04/22/2008 |
| 7363078 | Intracardiac polarization signal stabilization Polarization signals, which represent voltages measured at a pacemaker electrode, are not constant and may drift. Polarization signal drift, which often precedes undesirable pace polarization artifacts, is more significant when the pacemaker is inhibited from provid... | 04/22/2008 |
| 7359839 | Data processing apparatus and scheme for signal measurement A measure system for signal measurement is introduced. The measure system simplifies the effort for a signal measurement in many applications. The application for a signal measurement is, for example, computation of a signal average value. The measure system include... | 04/15/2008 |
| 7347826 | Packaging sensors for long term implant According to this technique of packaging a sensor device implantable in a living body so as to provide protection of the sensor device and to the living body itself, an electrical conductor of the sensor device is sealed in an insulating substrate extending between ... | 03/25/2008 |
| 7346394 | Cardiac stimulation at high ventricular wall stress areas An apparatus and method for reversing ventricular remodeling with electro-stimulatory therapy. A ventricle is paced by delivering one or more stimulatory pulses in a manner such that a stressed region of the myocardium is pre-excited relative to other regions in ord... | 03/18/2008 |
| 7336999 | Means to check the validity of heart failure surrogate parameters from evoked response using 3-D accelerometer queue In one implementation, a method is provided for detecting heart failure which includes retrieving a three-dimensional posture template corresponding to a normal evoked response. The method further includes capturing an intracardiac electrogram of an evoked response ... | 02/26/2008 |
| 7336997 | Heart treatment equipment and heart treatment method Heart treatment equipment and a heart treatment method directed to prevention of a fatal arrhythmia by detecting a physical exercise or a mental stress by using a sensor and thereafter controlling the vagus nerve stimulation, wherein sensor means for detecting vario... | 02/26/2008 |
| 7333854 | Orthostatic cardiac output response pacer for heart failure patients and diabetic patients An exemplary method includes detecting a change in position, measuring cardiac output after the detecting a change in position and, based at least in part on the measuring cardiac output, deciding whether to increase a cardiac pacing rate. An exemplary method may re... | 02/19/2008 |
