Surgery – Diagnostic testing – Cardiovascular
Patent
1998-05-07
1999-09-28
Kamm, William E.
Surgery
Diagnostic testing
Cardiovascular
600509, 600517, 607 9, A61B 50402, A61B 50456, A61B 50452
Patent
active
059578572
ABSTRACT:
An automatic sensing system for an implantable cardiac rhythm management device comprises a variable gain amplifier and associated filters where the gain of the amplifier is adjusted as a function of the peak amplitude of a cardiac depolarization signal (either a P-wave or an R-wave) and especially the relationship of the peak value to a maximum value dictated by the circuit's power supply rail. The trip point comparator has its trip point adjusted as a function of the difference between the detected peak value of the signal of interest and the peak value of noise not eliminated by the filtering employed.
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Cardiac Pacemakers Inc.
Kamm William E.
Layno Carl H.
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