Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1995-02-21
1996-07-09
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 1362
Patent
active
055340164
ABSTRACT:
A dual chamber pacemaker for providing ventricular pace pulses synchronized with atrial senses or paces, and having specific control for optimizing the AV escape interval and resultant AV delay for purposes of therapy for a patient with hypertrophic obstructive cardiomyopathy (HOCM). The pacemaker has an algorithm for varying the AV escape interval and detecting when the AV delay is lengthened to the point of evoking a fusion beat, thereby providing an accurate indication of a patient's underlying PR interval without significant loss of pacing capture. By monitoring T-wave detection and drop in amplitude of the evoked T-wave, an algorithm is enabled for optimizing the pacemaker AV delay within a range of values just less than the longest value for obtaining pre-excitation by the delivered pace pulse.
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McDonald, Kenneth et al., "Permanent Pacing As Treatment For Hypertrophic Cardiomyopathy," The American Journal Of Cardiology, vol. 68, Jul. 1, 1991, pp. 108-110.
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Parsonnet, et al., "The Development of an Intracardiac Dipolar Catheter Electrode For the Treatment of Complete Heart Block," Surgical Forum.
Getzow Scott M.
Kamm William E.
Vitatron Medical B.V.
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