Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1992-04-13
1994-05-17
Cohen, Lee S.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 136
Patent
active
053124413
ABSTRACT:
An implantable cardioverter including apparatus for measuring the width of a patient's R-wave in order to determine whether or not to deliver an antitachycardia therapy. The means for measuring the width of the R-wave comprises a digitizing means for converting electrical signals from the ventricle to digital signals and means for analyzing the digitized signals to determine the end points of sensed R-waves. End points are identified in response to the occurrence of a series of sequential digitized signals which differ from proceeding signals by more than a predetermined amount, and the width of the R-wave is defined as the interval between the first such identified end point associated with a detected R-wave and the last such detected end point associated with the same detected R-wave.
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Huberty Kenneth P.
Lisowski John R.
Mader Steven J.
Olson Walter H.
Cohen Lee S.
Duthler Reed A.
Jastrzab Jeffrey R.
Medtronic Inc.
Patton Harold R.
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