Medtronic, Inc.

Irving J Sanchez

Xusheng Zhang

Saul E Greenhut

Jian L Cao

Troy Edward Jackson

Paul R Solheim

Gerald P Arne

Michael W Heinks

Timothy A Ebeling

Yuanzhen Liu

Alfonso Aranda Hernandez

James A Vander Heyden

An implantable medical device system capable of sensing cardiac electrical signals includes a sensing circuit, a therapy delivery circuit and a control circuit. The sensing circuit is configured to receive a cardiac electrical signal and sense a cardiac event in response to the signal crossing a cardiac event sensing threshold. The therapy delivery circuit is configured to deliver an electrical stimulation therapy to a patient's heart via the electrodes coupled to the implantable medical device. The control circuit is configured to control the sensing circuit to set a starting value of the cardiac event sensing threshold and hold the starting value constant for a sense delay interval. The control circuit is further configured to detect an arrhythmia based on cardiac events sensed by the sensing circuit and control the therapy delivery circuit to deliver the electrical stimulation therapy in response to detecting the arrhythmia.

Multi-threshold sensing of cardiac electrical signals in an extracardiovascular implantable cardioverter defibrillator

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Blaine, MN, United States of America

Irving J Sanchez