Surgery – Truss – Pad
Patent
1975-07-11
1976-12-28
Michell, Robert W.
Surgery
Truss
Pad
128422, A61N 136
Patent
active
039995577
ABSTRACT:
A demand pacemaker having different standby and pacing rates and circuitry for selectively rendering the standby and pacing rates substantially identical. First and second capacitors control the standby and pacing rates, respectively, one capacitor being responsive to either a natural heartbeat or a pacemaker output pulse to alter the rate established by the other. In a preferred embodiment, the second capacitor is charged during a pacemaker output pulse and discharges through the first capacitor to decrease its charging time, the charging time of the first capacitor controlling the pacemaker output pulse frequency. Circuitry responsive to externally generated signals causes the second capacitor to charge during both a natural heartbeat or a pacemaker output pulse to render the pacemaker standby and pacing rates substantially identical. In this manner, the pacemaker of the present invention may be employed to monitor heart activity at a first, or standby, rate while providing a pacing function at a second, higher rate, on demand, until such time as the necessity for the pacing function is established with the standby rate then being modified to conform to the pacing rate.
REFERENCES:
patent: R28003 (1974-05-01), Gobeli
patent: 3717153 (1973-02-01), Bowers
patent: 3805796 (1974-04-01), Terry et al.
patent: 3807410 (1974-04-01), Wall et al.
Adams John M.
Citron Paul
Cohen Lee S.
Medtronic Inc.
Michell Robert W.
Schwartz Lew
Sivertson Wayne A.
LandOfFree
Prophylactic pacemaker does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Prophylactic pacemaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prophylactic pacemaker will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-143531