Qingsheng Zhu, Julio C Spinelli, Gerrard M Carlson: Accelerometer-based heart sound detection for autocapture. Cardiac Pacemakers, C G Mersereau, Nikolai & Mersereau P A, November 18, 2003: US06650940 (122 worldwide citation)

An implantable cardiac rhythm management device capable of automatically detecting intrinsic and evoked response of a patient's heart. The device operates in an automatic capture verification mode, wherein a global accelerometer signal is utilized to identify heart sounds (S

Ivan Bourgeois: Method and apparatus for treating irregular gastric rhythms. Medtronic, Thomas F Woods, Michael J Jaro, Harold Patton, April 10, 2001: US06216039 (122 worldwide citation)

A method and apparatus for treating gastric arrhythmia. The apparatus features an implantabler pulse generator which may be coupled to the gastric system through one or more medical electrical leads. In the preferred embodiment the leads couple to the circular muscle layer of the stomach. The appara ...

Robert W Stadler, William J Combs, David Lipson: Implantable medical device employing sonomicrometer output signals for detection and measurement of cardiac mechanical function. Medtronic, Michael C Soldner, Girma Wolde Michael, September 21, 2004: US06795732 (121 worldwide citation)

Implantable medical devices (IMDs) for detection and measurement of cardiac mechanical and electrical function employ a system and method for determining mechanical heart function and measuring mechanical heart performance of upper and lower and left and right heart chambers without intruding into a ...

Joseph J Florio, Euljoon Park, Kerry Bradley, Gene A Bornzin: System and method for automatically verifying capture during multi-chamber stimulation. Pacesetter, January 28, 2003: US06512953 (121 worldwide citation)

A system and corresponding method are provided to reliably detect capture during multi-chamber stimulation, and to further monitor the progression of congestive heart failure. The system provides a method by which intracardiac electrogram (IEGM) characteristics representing single-chamber capture an ...

Euljoon Park, Gene A Bornzin, Junyu Mai: System and method for modulating the pacing rate based on patient activity and position. Pacesetter, February 26, 2002: US06351672 (119 worldwide citation)

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 increasing its pacing rate upon postural transition. The pacing rate is abruptly increased to about 80-100 ...

David J Ternes: Method of operating implantable medical devices to prolong battery life. Cardiac Pacemakers, Nikolai & Mersereau P A, Thomas J Nikolai, March 21, 2006: US07016730 (118 worldwide citation)

A method of conserving power and extending the life of a battery in an implantable rate-responsive cardiac rhythm management device. In accordance with the preferred embodiment, a first physiologic sensor is used to enable a power consuming feature only when the first sensor produces an output falli ...

Gianni Plicchi, Bruno Garberoglio, Guido Gaggini, Emanuela Marcelli: Heart stimulation device with electrotonic inhibition. Sorin Biomedica Cardio S p A, Popovich & Wiles P A, December 10, 2002: US06493585 (118 worldwide citation)

Electrodes can generate electrical stimulation pulses at least one first intensity level and at least one second intensity level. The first and second intensity levels are above and below a given stimulation threshold, respectively. The synchronous or asynchronous delivery of second-level pulses ena ...

Scott C Meyerson, William J Linder, Keith R Maile: Acceleration-sensitive cardiac pacemaker and method of operation. Cardiac Pacemakers, Haugen and Nikolai, January 19, 1993: US05179947 (118 worldwide citation)

An accelerometer based rate adaptive pacemaker generating an acceleration output signal corresponding to sensed acceleration of a patient's body. Apparatus for providing a sensor determined interval is coupled to the acceleration sensor and the sensor determined interval is proportional to the accel ...

Robert J Nehls, Todd J Sheldon: Method of optimizing cardiac resynchronization therapy using sensor signals of septal wall motion. Medtronic, Girma Wolde Michael, Paul H McDowall, August 15, 2006: US07092759 (116 worldwide citation)

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 monitored wall motion. At least one lead of medical device is equipped with a motion sensor adapted to couple ...

Mark Schwartz, Joseph M Bocek, Jaeho Kim: Cardiac rhythm management systems and methods using multiple morphology templates for discriminating between rhythms. Cardiac Pacemakers, Schwegman Lundberg Woessner & Kluth P A, April 18, 2006: US07031764 (114 worldwide citation)

Multiple morphology templates for discliminating between rhythms have been used, such as supraventricular tachyarrhythmias (SVTs) and ventricular tachyarrhythmias (VTs), for delivering a countershock in response to a VT episode, but withholding delivery of such a countershock in response to an SVT e ...