Active implantable medical device for the reduction of cardiac a

Details Active implantable medical device for the reduction of cardiac a Active implantable medical device for the reduction of cardiac a

1998-05-14

2000-06-20

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1362

Patent

active

060788364

ABSTRACT:
An active implantable medical device, especially of the cardiac pacemaker, defibrillator and/or cardiovertor type, and method for the reduction of episodes of arrhythmia, and especially of atrial arrhythmias. The device operates by detecting events of spontaneous electrical activity in a cardiac cavity, especially the atrium; delivering a stimulation to the aforementioned cardiac cavity, which stimulation is controlled according to an actual escape interval such that, at each cardiac cycle, a stimulation is delivered to the cavity if no spontaneous event is detected by the end of a time corresponding to the end of the period of escape interval since the last spontaneous event or the last stimulation in the cavity; counting of the number of successive stimulated events; and discriminating between events detected in the cavity of an extrasystole origin or a non-extrasystole origin. Preferably, the escape interval is modifiable at each cardiac cycle in a manner so as to reduce by a first programmable value the actual escape interval after the detection of a event of spontaneous non extrasystole origin, or to increase by the actual escape interval a second value programmable after delivery of a predetermined number of successive stimulations.

REFERENCES:
patent: 3857399 (1974-12-01), Zacouto
patent: 3921642 (1975-11-01), Preston et al.
patent: 4421114 (1983-12-01), Berkovits et al.
patent: 5284491 (1994-02-01), Sutton et al.
patent: 5312451 (1994-05-01), Limousin et al.
patent: 5480413 (1996-01-01), Greenhut et al.

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