Cardiac pacemaker and method for detecting cardiac signals

Details Cardiac pacemaker and method for detecting cardiac signals Cardiac pacemaker and method for detecting cardiac signals

1991-05-06

1993-07-20

Kamm, William E.

Surgery

Truss

Pad

A61N 1362

Patent

active

052284379

ABSTRACT:
An apparatus for detecting an electrical potential in a human body to control the delivery of a therapy. The electrical potential comprises a principal signal and a baseline signal. The apparatus samples the potential through an electrode during a selected interval and stores the value of that potential at the end of the interval. The stored value of the potential will be restored as an initial condition on the electrode at the end of a second interval after delivery of the therapy. In a heart pacemaker, the baseline signal is useful for controlling the output pulses of the pacemaker. The apparatus permits sensing of the baseline signal despite stimulating pulses and charge canceling.

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patent: 4759366 (1986-07-01), Callaghan
patent: 4821724 (1989-04-01), Whigham et al.

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