Pacemaker with adaptive sensing means for use with unipolar or b

Details Pacemaker with adaptive sensing means for use with unipolar or b Pacemaker with adaptive sensing means for use with unipolar or b

1984-06-29

1985-08-06

Kamm, William E.

Surgery

Truss

Pad

128902, A61N 136

Patent

active

045329311

ABSTRACT:
A sensing circuit for a cardiac stimulator which can adapt to the use therewith of either bipolar leads or unipolar leads without the need for telemetric programming of a switch internal to the implanted pacemaker. If a unipolar lead is plugged into the terminal receptacle of the pacer at the time of implant, the pacer will sense R-wave activity and other artifacts between a distal tip electrode and the metal body of the pacemaker, but if a bipolar lead is plugged into that same receptacle at the time of implant, the pacer will sense such artifacts between a tip electrode and a ring electrode spaced a predetermined short distance proximally of the tip electrode along the surface of the lead body.

REFERENCES:
patent: 3345990 (1967-10-01), Berkovits
patent: 3735766 (1973-05-01), Bowers et al.
patent: 4289134 (1981-09-01), Bernstein
patent: 4301805 (1981-11-01), Peers-Trevarton et al.
patent: 4402322 (1983-09-01), Duggan

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