04595009 is referenced by 151 patents and cites 6 patents.

An implantable medical device to deliver cardioverting energy to cardiac tissue in synchrony with detected ventricular depolarizations having a low power sensing and control circuitry and high power cardioversion circuitry, sharing a common lead and interface circuitry. The lead possesses a superior vena cava electrode and ring and tip electrodes intended to be placed in the ventricle. A sense amplifier is connected across the ring and tip electrode, and the cardioversion energy is delivered across the superior vena cava electrode and the ventricular electrodes. A circuit for protecting the low voltage sense amplifier circuits from high voltage cardioversion output pulses includes a triac which is electrically shorted across the ring and tip electrodes and the input terminals of the sense amplifier during the delivery of the stimulating pulse.

Title
Protection circuit for implantable cardioverter
Application Number
577631
Publication Number
4595009
Application Date
September 30, 1985
Publication Date
June 17, 1986
Inventor
Robert Leinders
Sittard
NL
Agent
John L Rooney
Robert C Beck
Joseph F Breimayer
Assignee
Medtronic
MN, US
IPC
A61N 1/36
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