Unipolar and bipolar lead cardiac pacemaker and method for inhibiting anode stimulation
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United States of America Patent
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May 13, 2008
Grant Date -
N/A
app pub date -
Mar 31, 2005
filing date -
Mar 31, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-chamber implantable heart stimulation device is provided, adapted to inhibit anodal stimulation at a bipolar right chamber lead induced by a unipolar left chamber lead. The device includes a control unit adapted to provide to the unipolar left chamber lead a pace pulse having a trailing edge without a sharp cutoff. The control unit may be adapted to supply the pace pulse to the unipolar left chamber lead without a fast recharge period. The control unit may be adapted to supply to the unipolar left chamber lead a pace pulse having a trailing edge with a gradual decay, a ramp, steps, or a non-linear function. The control unit may be adapted to supply a different waveform to the bipolar right chamber lead than the pace pulse for the unipolar left chamber lead. For example, a conventional pacing pulse may be supplied to the bipolar right chamber lead.
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