Automatic threshold sensitivity adjustment for cardiac rhythm ma

Details Automatic threshold sensitivity adjustment for cardiac rhythm ma Automatic threshold sensitivity adjustment for cardiac rhythm ma

1998-06-15

2000-02-22

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1362

Patent

active

060290862

ABSTRACT:
An implantable cardiac rhythm management device includes a controller adapted to receive digitized electrocardiogram signals from leads placed on or in the heart. The device also incorporates an autosense algorithm which automatically adjusts the sensing threshold dependent upon an average or maximum amplitude of noise detected during a period following a sensed cardiac depolarization. The sensing threshold is automatically set on a beat-to-beat basis at a level such that the signal to noise ratio exceeds a preset value.

REFERENCES:
patent: 4779617 (1988-10-01), Whigham
patent: 5365932 (1994-11-01), Greenhut
patent: 5564430 (1996-10-01), Jacobson et al.
patent: 5755738 (1998-05-01), Kim et al.

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