Method and apparatus for automatic capture verification...

Details Method and apparatus for automatic capture verification... Method and apparatus for automatic capture verification...

2005-03-08

2005-03-08

Manuel, George (Department: 3762)

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

Reexamination Certificate

active

06865421

ABSTRACT:
A cardiac stimulation device and method automatically confirm capture by detecting the polarity of a post-stimulation signal. A capture detection circuit is subjected to recharge and block overlap signals applied such than an evoked response signal is characterized by a primarily positive polarity and a polarization signal is characterized by a primarily negative polarity. An amplitude detection feature, such as peak amplitude or signal integral, and its polarity are determined from a post-stimulation signal sensed by the capture detection circuit during a capture detection window. Capture is confirmed when the amplitude detection feature has a positive polarity.

REFERENCES:
patent: 5861013 (1999-01-01), Peck et al.
patent: 5871512 (1999-02-01), Hemming et al.
patent: 5954756 (1999-09-01), Hemming et al.

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