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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...
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7606616 |
Calibration of adaptive-rate pacing using intrinsic chronotropic response
Calibration of adaptive-rate pacing by a cardiac rhythm management system using an intrinsic chronotropic response. The cardiac rhythm management system may include an adaptive-rate pacing device....
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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...
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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...
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7548785 |
Collecting and analyzing sensed information as a trend of heart failure progression or regression
An exemplary method includes selecting a cross-correlation frequency having an associated cross-correlation period, detecting and binning a heart rate in a heart rate bin, detecting and binning an...
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7539539 |
Implantable cardiac stimulation device with respiratory modulated therapy delivery
A method of providing cardiac stimulation therapy and a device for providing the therapy. A patient's cardiac activity as well as cyclical respiration is monitored. Cardiac stimulation is provided...
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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...
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7491181 |
Collecting activity and sleep quality information via a medical device
A device, such as an implantable medical device (IMD) or a programming device, determines when a patient is attempting to sleep. When the device determines that the patient is attempting to sleep,...
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7471290 |
Posture detection system
Methods, systems, and apparatus are described for posture detection. Orientations of a body are detected with respect to first and second axes. A movement of the body with respect to a third axis...
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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,...
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7445605 |
Detection of apex motion for monitoring cardiac dysfunction
Systems, devices and methods for detecting and monitoring cardiac dysfunction. The devices include motion sensors for detecting signals representative of the total movement of the heart, and of the...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7319899 |
Sensing techniques for implantable medical devices
The invention is directed to sensing techniques that can be executed by an implantable medical device (IMD). The sensing techniques exploit the fact that useful information can be sensed during the...
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7313440 |
Collecting posture and activity information to evaluate therapy
A medical device, programmer, or other computing device may determine values of one or more activity and, in some embodiments, posture metrics for each therapy parameter set used by the medical...
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7313439 |
Method and apparatus for predicting arrhythmias using diurnal heart rate
A method of predicting an arrhythmia, such as ventricular tachycardia, for example, in a medical device using a quantitative measure in order to allow assessment of patient risk and to enable...
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7299093 |
Method and apparatus for avoidance of phrenic nerve stimulation during cardiac pacing
A cardiac rhythm management device in which an accelerometer is used to detect diaphragmatic or other skeletal muscle contraction associated with the output of a pacing pulse. Upon detection of...
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7295874 |
Intermittent stress augmentation pacing for cardioprotective effect
A device and method for delivering electrical stimulation to the heart in a manner which provides a protective effect against subsequent ischemia is disclosed. The protective effect is produced by...
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7277756 |
Risk of death indicator
A system comprising an implantable medical device (IMD). The IMD comprises a ventricular heart signal sensing circuit to provide a ventricular heart signal, at least one sensor operable to provide...
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7269458 |
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...
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7260431 |
Combined remodeling control therapy and anti-remodeling therapy by implantable cardiac device
A method and device for delivering ventricular resynchronization pacing therapy in conjunction with electrical stimulation of nerves which alter the activity of the autonomic nervous system is...
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7248923 |
Dual-use sensor for rate responsive pacing and heart sound monitoring
An implantable medical device includes a dual-use sensor such as a single accelerometer that senses an acceleration signal. A sensor processing circuit processes the acceleration signal to produce...
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7236825 |
Cardiac activity sensing during pacing in implantable devices
A method and device for sensing cardiac activity that includes a first plurality of electrodes forming a first electrode configuration to sense cardiac activity, a second plurality of electrodes...
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7225023 |
System and method for modulating the pacing rate based on patient activity and position
A system and method are provided for compensating for the drop in blood pressure upon standing. Upon transition from prolonged sitting, lying down, or standing position, the pacemaker abruptly...
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7225022 |
Method of optimizing patient outcome from cardiac resynchronization therapy
A method of data management for optimizing the patient outcome from the provision of cardiac resynchronization therapy (CRT) is described. This method describes a process by which sets of dynamic...
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7215997 |
Dynamic device therapy control for treating post myocardial infarction patients
A cardiac rhythm management system includes an implantable device executing a dynamic pacing algorithm after an myocardial infarction (MI) event. The dynamic pacing algorithm dynamically adjusts...
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7209786 |
Method and apparatus for optimization of cardiac resynchronization therapy using heart sounds
A cardiac rhythm management system provides for assessment of cardiac mechanical dyssynchrony based on heart sound morphology and optimization of pacing parameters based on the effect of pacing on...
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7203541 |
Real-time optimization of right to left ventricular timing sequence in bi-ventricular pacing of heart failure patients
A system and automated method for assessing ventricular synchrony in ambulatory patients is provided including at least one mechanical sensor (e.g., accelerometer, tensiometric sensor, force...
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7181281 |
ICD using MEMS for optimal therapy
An exemplary method includes detecting movement of an in vivo oscillator using one or more in vivo sensors, receiving information from at least one of the one or more sensors, and deciding whether...
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7181268 |
Ischemia detection
Techniques for detection and treatment of myocardial ischemia are described that monitor both the electrical and dynamic mechanical activity of the heart to detect and verify the occurrence of...
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7177684 |
Activity monitor and six-minute walk test for depression and CHF patients
An implantable device that can automatically monitor and record patient activity as sensed by an activity monitor. In certain variations, the activity monitor can include an accelerometer providing...
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7171271 |
System and method for evaluating heart failure using an implantable medical device based on heart rate during patient activity
Techniques are provided for detecting and tracking heart failure based on heart rate, rest rate and activity levels. Briefly, histograms are generated based on rest-rate adjusted heart rate values...
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7155281 |
Complimentary activity sensor network for disease monitoring and therapy modulation in an implantable device
Energy efficient methods and systems for using multi-dimensional activity sensors with implantable cardiac devices are provided. In certain embodiments the output of a passive activity sensor (used...
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7155280 |
Rate-adaptive pacemaker with compensation for long-term variations in average exertion level
A rate-adaptive pacemaker is disclosed in which a sensor-indicated rate is calculated by adding a function of the measured exertion level to a programmed lower rate limit. In the case where the...
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7149584 |
System and method for determining patient posture based on 3-D trajectory using an implantable medical device
Time-varying spatial signals are detected by accelerometers mounted within the patient. The signals, representative of the actual 3-D trajectory of the patient, are compared with information...
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7142921 |
Single axis accelerometer and method therefore
Methods and apparatus are provided for an accelerometer. The apparatus includes first, second, and third substrates. The first substrate includes the first plate of a first capacitor. The second...
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7136705 |
Method and apparatus for monitoring sensor performance during rate-responsive cardiac stimulation
A cardiac stimulation device and method monitor and store discrepancies in sensor indicated rates determined from two or more sensors generating signals related to metabolic demand. One feature...
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7130687 |
Implantable medical device and method for delivering therapy for sleep-disordered breathing
An implantable medical device delivers augmentation therapy to intervene in a pattern of sleep-disordered breathing. Augmentation therapy includes the delivery of electrical stimulation to cardiac...
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7130686 |
Selection of preventative arrhythmia therapy based on patient specific histogram data
Methods and systems for providing cardiac therapy are described. In some embodiments, methods and systems are configured to deliver atrial tachyarrhythmia therapy by confirming that a patient is...
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7123967 |
Implantable neural stimulation device providing activity, rest, and long term closed-loop peripheral vascular disease therapy and method
An implantable neural stimulation device and method treats peripheral vascular disease of a patient. The device includes a pulse generator that provides stimulation pulses and an implantable lead...
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7117036 |
Using activity-based rest disturbance as a metric of sleep apnea
An implantable cardiac device is programmed to monitor short term activity changes that occur while a patient is at rest to produce a sleep disturbance metric that is useful in analyzing and/or...
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7092759 |
Method of optimizing cardiac resynchronization therapy using sensor signals of septal wall motion
The present invention relates to monitoring septal wall motion of the atrial and/or ventricular chambers of a heart for optimizing cardiac pacing intervals based on signals derived from the...
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7092758 |
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...
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7079897 |
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...
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