Medical field detector and telemetry unit for implants

Details Medical field detector and telemetry unit for implants Medical field detector and telemetry unit for implants

1995-02-21

1996-08-13

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 137

Patent

active

055451870

ABSTRACT:
A combined telemetry and magnetic field detector unit for use in a medical implant includes control logic, a magnetic field indicator, a telemetry circuit containing a number of switches, and a coil unit. The control logic is arranged to operate the switches such that switching between the telemetry function and the magnetic field detection function of the combined unit is achieved so the coil unit is utilized for transmission of telemetry signals to and from a programmer as well as for magnetic field detection. For magnetic field detection, the coil unit, which consists of multiple parts, is connected by the control logic such that the parts respectively form a primary side and a secondary side of a pulse transformer, with the magnetic field indicator connected by the control logic to the pulse transformer's secondary side.

REFERENCES:
patent: 4124031 (1978-11-01), Mensink et al.
patent: 4203447 (1980-05-01), Keller, Jr. et al.
patent: 4301804 (1981-11-01), Thompson et al.
patent: 4453162 (1984-06-01), Money et al.
patent: 4541431 (1985-09-01), Ibrahim et al.
patent: 4586508 (1986-05-01), Botina et al.
patent: 4944299 (1990-07-01), Silvian
"Elektrisk Matteknik, Analoga instrument och matmetoder," part 2, L. Grahm, Elektrisk matteknik, Lund, Sweden, pp. 543-545.

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