Pacemaker system with automatic event-programmed switching between unipolar and bipolar operation
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United States of America Patent
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Oct 29, 1985
Grant Date -
N/A
app pub date -
Sep 14, 1983
filing date -
Sep 14, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pacemaker system incorporates an implantable pacemaker and a plurality of electrodes, electrodes preferably being on a pacing lead for a single chamber pacemaker, or a pair of such leads for a dual chamber pacemaker. Programmable connection means are provided for connecting the pacemaker output to a selected combination of lead electrodes, the selection being changed during each pacer cycle to optimize the choice of unipolar and bipolar operation for given pacemaker events. In one mode, the system employs bipolar QRS sensing and unipolar pacing and T-wave sensing. In another mode, the system employs bipolar QRS sensing and pacing, and unipolar T-wave sensing.
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