Medtronic, Inc.

James Vander Heyden

Michael W Heinks

Timothy A Ebeling

Lonny V Cabelka

Yanina Grinberg

Joel R Lauer

Brian W Schousek

Joseph Ippolito

Craig W Dorma

Paul D Baker

Xusheng Zhang

Saul E Greenhut

Troy Edward Jackson

Robert T Sawchuk

Yuanzhen Liu

Alfonso Aranda Hernandez

Jean E Hudson

Irving J Sanchez

Robert W Sawchuk

A medical device is configured to receive cardiac electrical signals and sense ventricular event signals from the cardiac electrical signals. The medical device may start a validation window in response to sensing a ventricular event signal and determine if the ventricular event signal is a valid event signal or an invalid event signal based on processing of a different cardiac electrical signal than the cardiac electrical signal from which the ventricular event signal was sensed.

Medical device and method for cardiac pacing and sensing

An extra-cardiovascular implantable cardioverter defibrillator (ICD) having a high voltage therapy module is configured to control a high voltage charging circuit to charge a capacitor to a pacing voltage amplitude to deliver charge balanced pacing pulses. The capacitor is chargeable to a shock voltage amplitude that is greater than the pacing voltage amplitude. The ICD is configured to enable switching circuitry of the high voltage therapy module to discharge the capacitor to deliver a first pulse having a first polarity and a leading voltage amplitude corresponding to the pacing voltage amplitude for pacing the patient's heart via a pacing electrode vector selected from extra-cardiovascular electrodes. The high voltage therapy module delivers a second pulse after the first pulse. The second pulse has a second polarity opposite the first polarity and balances the electrical charge delivered during the first pulse.

Charge balanced cardiac pacing from high voltage circuitry of an extra-cardiovascular implantable cardioverter defibrillator system

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Maplewood, MN, United States of America

James Vander Heyden