Circuit for determining the parameter control states of an impla

Details Circuit for determining the parameter control states of an impla Circuit for determining the parameter control states of an impla

1977-07-05

1980-02-26

Kamm, William E.

Surgery

Truss

Pad

A61N 100

Patent

active

041900553

ABSTRACT:
A circuit for indicating at a remote location the control states of a fully implantable heart pacer includes a parallel to serial converter which receives the control states from a register which controls the parameters of the associated pacer. When the pacer is switched to an asynchronous or to a magnetic mode, the data is shifted through the parallel to serial converter. A delay is added between pulses when a particular logic state appears, and no delay is added if the complement of that logic state appears. The parameters can therefore be determined externally by observing the successive periods between stimulation pulses in the asynchronous or magnetic mode of the pacer.

REFERENCES:
patent: 3805796 (1974-04-01), Terry, Jr. et al.
patent: 3833005 (1974-09-01), Wingrove
patent: 3841336 (1974-10-01), Daynard
patent: 3945387 (1976-03-01), Adams
patent: 4049004 (1977-09-01), Walters

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