Automatic stimulus artifact reduction for accurate analysis of t

Details Automatic stimulus artifact reduction for accurate analysis of t Automatic stimulus artifact reduction for accurate analysis of t

1990-10-26

1992-12-22

Howell, Kyle L.

Surgery

Truss

Pad

A61N 1362

Patent

active

051726904

ABSTRACT:
An apparatus adapted to be implanted in a patient for electrically stimulating the heart and analyzing the heart's stimulated response, and a method of operating the apparatus, are disclosed. The apparatus operates to reduce the stimulation polarization artifact that normally accompanies such stimulation, allowing accurate measurement of stimulated cardiac potentials. The apparatus is useful in such devices as cardiac pacemakers, tachycardia reversion devices, and defibrillators. Optimizing features are provided to allow the apparatus to function properly in noisy environments and with suboptimal leads. In addition, provision is included to make the apparatus capable of performing self-diagnosis for determining when accurate sensing is not possible.

REFERENCES:
patent: 4692719 (1987-09-01), Whigham
patent: 4821724 (1989-04-01), Whigham et al.

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