Implantable cardiac device with dual clock control of microproce

Details Implantable cardiac device with dual clock control of microproce Implantable cardiac device with dual clock control of microproce

1989-07-07

1991-06-11

Kamm, William E.

Surgery

Truss

Pad

A61N 1362

Patent

active

050223950

ABSTRACT:
A microprocessor based implantable cardiac treatment device having first and second clocks. The first clock is a continuously running external clock of a relatively low frequency for controlling low power, uncomplicated operations of the device. The second clock runs at a much higher frequency for controlling the complex, high power operations of the microprocessor. Clock control circuitry is provided for activating the second clock only when it is determined that high power calculations are to be made by the microprocessor.

REFERENCES:
patent: 4390020 (1983-06-01), Herpers
patent: 4390022 (1983-06-01), Calfee et al.
patent: 4404972 (1983-09-01), Gordon et al.
patent: 4407288 (1983-10-01), Langer et al.
patent: 4424812 (1984-01-01), Lesnik
patent: 4561442 (1985-12-01), Vollmann et al.
patent: 4625730 (1986-12-01), Fountain et al.

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