Rate-responsive pacemaker with circuitry for processing multiple

Details Rate-responsive pacemaker with circuitry for processing multiple Rate-responsive pacemaker with circuitry for processing multiple

1990-04-16

1992-04-07

Kamm, William E.

Surgery

Truss

Pad

A61N 1368

Patent

active

051018241

ABSTRACT:
An implantable rate-responsive pacemaker is disclosed wherein two or more sensors indicative of physiological demand are utilized in a fashion designed to realize the advantages of both sensors in a circuit producing a rate command signal which is used to operate the pacemaker at an optimum pacing rate which will closely match physiological need of the patient. A rate matrix is used to produce a specific selected rate which is unique to the particular combination of sensor inputs which are being measured at the particular time. In the preferred embodiment, a plurality of rate matrices are provided, with the appropriate rate matrix to be used being selected by a switch matrix which monitors the logic-processed and time-processed signals from the sensors, the outputs of the processing circuitry being used to select a cell in the switch matrix which corresponds to the exact set of conditions currently being encountered by the sensors.

REFERENCES:
patent: 4867161 (1989-09-01), Schaldach
patent: 4873980 (1989-10-01), Schaldach
patent: 4895151 (1990-01-01), Grevis et al.

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