Rate-responsive pacemaker having selectable response to arm move

Details Rate-responsive pacemaker having selectable response to arm move Rate-responsive pacemaker having selectable response to arm move

1993-01-29

1995-01-24

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

607 17, A61N 1368

Patent

active

053839110

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.

REFERENCES:
patent: 5003976 (1991-04-01), Alt
patent: 5063927 (1991-11-01), Webb et al.
patent: 5137019 (1992-08-01), Pederson et al.

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