Rate-responsive pacemaker having selectable response to arm movement and pedal impacts
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United States of America Patent
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Jan 24, 1995
Grant Date -
N/A
app pub date -
Jan 29, 1993
filing date -
Jan 29, 1993
priority date (Note) -
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Abstract
A rate-responsive pacemaker (10) generates stimulation pulses on demand at a rate determined by a sensor indicated rate (SIR) signal. The pacemaker includes, in a preferred embodiment, an activity sensor (26) that generates a raw sensor signal (27) as a function of sensed body motion. The raw sensor signal is processed by two parallel signal processing channels with each channel emphasizing a different aspect of the raw sensor signal. A first sensor processing channel (28) produces a first processed sensor signal (S.sub.A) that is more sensitive to arm motion than to pedal impacts. A second sensor processing channel (30) produces a second processed sensor signal (S.sub.B) that is more sensitive to pedal impacts than to arm motion. The first and second processed sensor signals are each weighted by a programmable amount, and are then combined to form the SIR signal.
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Family
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