Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1995-03-29
1996-08-27
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 1362
Patent
active
055496482
ABSTRACT:
A dual chamber pacemaker system and method are provided for placing the pacemaker in an asynchronous mode when retrograde conduction is present, having the capability of detecting the onset of retrograde conduction and also monitoring on a cycle-by-cycle basis to determine the end of retrograde conduction. The detection of end of retrograde conduction is accomplished by two operative algorithms, i.e., a first algorithm which is executed at the time of any atrial sense and a second algorithm which is executed at the time of each ventricular event. Following an atrial sense, the pacemaker checks to see whether the just concluded VA interval conforms to predetermined RC interval criteria, and if not, immediately switches the pacemaker out of the RC mode and into a synchronous tracking mode. Following each ventricular event while the pacemaker is in the RC mode, the pacemaker monitors a predetermined class of special events and determines end of RC upon detection of a pattern of such special events. In a specific embodiment, if there are n (e.g.,3) consecutive cycles wherein the VA interval differs from the VA interval of the previous cycle by more than a predetermined amount, this is determined to establish a pattern indicative of end of RC; upon detection of this pattern, the pacemaker immediately switches to a synchronous tracking mode of pacing.
REFERENCES:
patent: 4452248 (1984-06-01), Keller, Jr.
patent: 4467807 (1984-08-01), Bornzin
patent: 4515161 (1985-05-01), Wittkampf et al.
patent: 4527568 (1985-07-01), Rickards
patent: 4539991 (1985-09-01), Boute et al.
patent: 4543963 (1985-10-01), Gessman
patent: 4554920 (1985-11-01), Baker, Jr. et al.
patent: 4554921 (1985-11-01), Boute et al.
patent: 4686989 (1987-08-01), Smyth et al.
patent: 4917115 (1990-04-01), Flammang et al.
patent: 4920965 (1990-05-01), Funke et al.
patent: 4951667 (1990-08-01), Markowitz
patent: 5065759 (1991-11-01), Begemann et al.
patent: 5193550 (1993-03-01), Duffin
patent: 5228438 (1993-07-01), Buchanan
patent: 5231985 (1993-08-01), Sutton et al.
patent: 5247929 (1993-09-01), Stoop et al.
patent: 5253644 (1993-10-01), Elmvist
patent: 5312450 (1994-05-01), Markowitz
Getzow Scott M.
Kamm William E.
Vitatron Medical B.V.
LandOfFree
Pacemaker system and method with improved detection of end of re does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pacemaker system and method with improved detection of end of re, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pacemaker system and method with improved detection of end of re will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1053190