Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1997-04-14
1998-06-16
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 16, A61N 1362
Patent
active
057662290
ABSTRACT:
An implantable pacemaker effectuates a capture verification method that minimizes the expenditure of battery current. A capture verification test is performed only occasionally, on a sampled basis, following delivery of a stimulation pulse. If capture is not verified, a loss of capture response mode is invoked that searches for an appropriate capture threshold, and when found, sets the stimulation energy at a level that is a prescribed safety factor above the capture threshold. All testing for capture is performed only after the heart rhythm has been measured, a short test pacing interval is selected that will be likely to overdrive the native rhythm, and the test pacing pulse delivered is delivered at the shortened interval so that the likelihood of fusion will be minimal.
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Kamm William E.
Pacesetter Inc.
Schaetzle Kennedy J.
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