Implantable demand pacemaker and monitor

Details Implantable demand pacemaker and monitor Implantable demand pacemaker and monitor

1977-10-17

1980-02-12

Kamm, William E.

Surgery

Truss

Pad

128419PT, A61N 136

Patent

active

041878540

ABSTRACT:
Cardiac monitoring and pacing apparatus comprising a first external unit for transmitting electromagnetic energy within the patient's body to be received by a second, surgically implanted unit within the patient's body and adapted to be solely powered by the transmitted electromagnetic energy. The first external unit transmits electromagnetic energy within the patient's body which is sensed and used to power the implanted unit, which stimulates, via pacing electrodes, the patient's heart. The internal unit also includes a monitoring circuit connected to the same pacing electrodes coupled to the patient's heart, for providing atrial and ventrical signals to be pulse-width modulated for transmission to the external unit. The external unit decodes the transmitted signals to provide diagnostic quality signals indicative of the patient's EKG.

REFERENCES:
patent: Re28003 (1974-05-01), Gobeli
patent: 3057356 (1962-10-01), Greatbatch
patent: 3648707 (1972-03-01), Greatbatch
patent: 3667477 (1972-06-01), Susset et al.
patent: 3747604 (1973-07-01), Berkovits
patent: 3898984 (1975-08-01), Mandel et al.
patent: 3903897 (1975-09-01), Woollons et al.
patent: 3911929 (1975-10-01), Gobeli
patent: 3927677 (1975-12-01), Gobeli et al.
patent: 3999556 (1976-12-01), Alferness
patent: 3999557 (1976-12-01), Citron et al.
Holcomb et al., "Medical and Biological Engineering", vol. 7, No. 5, Sep. 1969, pp. 493-499.
Holcomb et al., "21 st ACEMB", Houston, Texas, Nov. 18-21, 1968, p. 22a1.

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