Surgery – Truss – Pad
Patent
1982-05-10
1984-04-10
Cohen, Lee S.
Surgery
Truss
Pad
128419PG, 128903, A61N 136
Patent
active
044414986
ABSTRACT:
An implantable programmable pulse generator provides electrical stimulation signals to the heart of a patient. The operating parameters of the pulse generator, such as stimulation rate, refractory period duration, and operating mode are programmable by a physician after the pulse generator has been implanted surgically in the patient. An external programmer device includes a transmitter of coded radio frequency (RF) signals. The pulse generator includes a receiver antenna for receiving the coded RF signals. The receiver antenna includes a first wire-wound, air core, planar coil antenna carried on a flexible insulating substrate adjacent an inner wall of a first major side surface of the pulse generator housing and a second wire-wound, air core, planar coil antenna carried on the flexible insulating substrate adjacent an inner wall of a second major side surface of the pulse generator housing. The planar coils are series additive connected to the programmable pulse generator circuit so that the RF signals will be received regardless of the orientation of the pulse generator when it is implanted in the patient. The planar receiver coil antenna provides reliable reception of the RF signal even when the transmitter coil of the programmer is slightly misaligned or tilted with respect to the receiver coil antenna. In addition, the antenna provides a shallow Q factor so that individual high tolerance tuning of the receiver circuits of the pulse generator is not required.
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Radio-Frequency Pacemaker w/ Receiver Coil Implanted on Heart, Camilli et al.--Annals of NY Acad. of Science.
Portable Mini Transistorized R-F Coupled Cardiac Pacemaker, Hilkman et al.--IRE Trans. on Bio-Med Elec.
Cardio-Pace Medical, Inc.
Cohen Lee S.
Falk Steven
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