Implantable dual chamber heart stimulator

Details Implantable dual chamber heart stimulator Implantable dual chamber heart stimulator

2005-06-28

2005-06-28

Layno, Carl H. (Department: 3762)

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

Reexamination Certificate

active

06912422

ABSTRACT:
The invention relates to an implantable dual chamber heart stimulator comprising a stimulation threshold detector arranged to activate a stimulation threshold search algorithm to perform a stimulation threshold search at predetermined time intervals in order to determine a stimulation threshold of heart tissue. The heart stimulator comprises an AV-interval generator adapted to generate an AV-interval and a controller arranged to temporarily shorten the AV-interval to a threshold search AV-interval when this threshold search is performed. The heart stimulator further comprises AR/PR-interval measure adapted to measure the actual AR/PR conduction time in which this threshold search AV-interval is set by the AV-interval generator and the controller to the measured AR/PR-interval shortened by a predetermined time.

REFERENCES:
patent: 5476487 (1995-12-01), Sholder
patent: 5766229 (1998-06-01), Bornzin
patent: 6047213 (2000-04-01), Sirokman et al.
patent: 6115632 (2000-09-01), Akers et al.
patent: 0 850 662 (1998-01-01), None
patent: WO 95/24944 (1995-09-01), None
patent: WO 96/04956 (1996-02-01), None

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