Implantable medical device having means for discriminating betwe

Details Implantable medical device having means for discriminating betwe Implantable medical device having means for discriminating betwe

1995-12-05

1997-04-29

Kamm, William E.

Surgery

Truss

Pad

607 5, A61B 5046, A61N 139

Patent

active

056239360

ABSTRACT:
An improved "VF immune" cardiac event detector for an implantable medical device consists of high-frequency and a low-frequency delta converters coupled to an intracardiac signal. The high-frequency delta converter is tuned to be responsive to R-waves and VF waveforms. However, the low-frequency delta converter is tuned to be responsive only to VF waveforms. By monitoring the difference between the outputs of the high-frequency and the low-frequency delta converters, the system can effectively discriminate between "true" R-waves and VF waveforms.

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UK Patent Application No 8526417, Filed Oct. 25, 1985.

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