05331966 is referenced by 887 patents and cites 3 patents.

A method and apparatus for providing an enhanced capability of detecting and gathering electrical cardiac signals via an array of relatively closely spaced subcutaneous electrodes (located on the body of an implanted device) which may be employed with suitable switching circuits, signal processors, and memory to process the electrical cardiac signals between any selected pair or pairs of the electrode array in order to provide a leadless, orientation insensitive means for receiving the electrical signal from the heart. This far-field EGM may be used to provide storage and analysis of arrhythmic events and to provide control signals for the delivery of various therapies including pacing, cardioversion and defibrillation therapies as well as the delivery of antiarrhythmic drugs, and, in the pacing context, to effect capture detection and automatic stimulation threshold adaption, recording of PMT episodes, measurement of refractory periods in order to set timing windows for antitachy pacing therapies, and as a control signal for use in adjusting pacing rate to physiologic demand.

Title
Subcutaneous multi-electrode sensing system, method and pacer
Application Number
681235
Publication Number
5331966
Application Date
December 16, 1993
Publication Date
July 26, 1994
Inventor
George J Klein
London
CA
Rahul Mehra
Stillwater
MN, US
Brian B Lee
Golden Valley
MN, US
Kallok Michael J
New Brighton
MN, US
William J Combs
Eden Prairie
MN, US
Tom D Bennett
Shoreview
MN, US
Agent
Harold R Patton
Reed A Duthler
Assignee
Medtronic
MN, US
IPC
A61B 5/0428
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