A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
326/1.3
A61N 1/365 (2006.01) A61N 1/368 (2006.01)
Patent
CA 1229882
CONSTANT A-A INTERVAL CONTROL FOR DVI AND DDD CARDIAC PACEMAKERS ABSTRACT A physiologic cardiac pacer operable in the DVI or A-V sequential pacing mode or the DDD or fully automatic pacing mode senses for the omission of an R-wave from an implantable cardiac pacer during the A-V interval. If the pacer does not sense a R-wave during the A-V interval the V-A interval is timed out immediately following the A-V interval and an atrial pacing pulse is issued at the end of the V-A interval. In the event, however, that an R-wave is sensed during the A-V interval, a flag is set and then the entire A-V interval is to be timed out, at which time the state of the flag is determined. If an R-wave was priviously issued, a ventricular pacing pulse is not issued to the pacer at the end of the A-V interval, whereas if the flag is not set it is transmitted to the pacer.
456549
Medtronic Inc.
Smart & Biggar
LandOfFree
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