Surgery – Truss – Pad
Patent
1975-09-25
1977-10-11
Kamm, William E.
Surgery
Truss
Pad
A61N 136
Patent
active
040529916
ABSTRACT:
Device and method for stimulating the heart. The device comprises means for producing stimulating pulses at regular intervals and means responsive to spontaneous heart signals for controlling the transmission of said pulses to the heart in dependence upon the timing and magnitude of the spontaneous heart signals and/or the average intramyocardial pressure. The method comprises producing stimulating pulses at regular intervals and controlling the transmission of stimulating pulses, in response to spontaneous heart signals, in dependence on the timing and magnitude of the spontaneous heart signals. In the absence of spontaneous heart signals, stimulating pulses are produced at predetermined intervals. When spontaneous heart signals occur, an adjustable waiting period is introduced in which to allow a second spontaneous signal instead of a stimulating pulse. The duration of the waiting period is varied as a function of the interval of time which separates two consecutive spontaneous detected signals (i.e., not separated by any artificially induced heart signal).
REFERENCES:
patent: 3352300 (1967-11-01), Rose
patent: 3460542 (1969-08-01), Gemmer
patent: 3524442 (1970-08-01), Horth
patent: 3593705 (1971-07-01), Thomas et al.
patent: 3672353 (1972-06-01), Crovella et al.
patent: 3716059 (1973-02-01), Welborn
patent: 3870050 (1975-03-01), Greatbatch
patent: 3952731 (1976-04-01), Worstencroft
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