Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1997-03-03
1998-06-16
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 30, 607 32, A61N 108
Patent
active
057662320
ABSTRACT:
A method and apparatus for programming implantable medical devices employing RF telemetry, and more particularly, altering the RF telemetry antenna Q to accommodate telemetry with implantable medical devices having differing RF telemetry receiving characteristics is disclosed. The RF head telemetry antenna comprises an LC tank circuit including an RF head telemetry coil and a tuning capacitor and has a predetermined antenna Q. The RF head telemetry antenna is adapted to be driven into oscillation by applied oscillating energy and to continue to oscillate in a series of declining amplitude oscillations after the oscillating energy is no longer applied as residually stored oscillating energy is dissipated therethrough. A transmit telemetry pulse is generated for establishing a pulse width of the telemetry RF pulse. Upon the termination of the telemetry transmit pulse antenna Q is reduced from the predetermined antenna Q, and the declining amplitude oscillations are thereby attenuated. The reduction of the antenna Q is effected by a grounding a sense coil located in the programmer RF head that is employed to sense the RF pulse and regulate the amplitude thereof during the transmit telemetry pulse at the termination of the transmit telemetry pulse.
REFERENCES:
patent: 4006086 (1977-02-01), Tsunoi
patent: 4124031 (1978-11-01), Mensink et al.
patent: 4304237 (1981-12-01), Mensink
patent: 4550370 (1985-10-01), Baker
patent: 4556063 (1985-12-01), Thompson et al.
patent: 4571589 (1986-02-01), Slocum et al.
patent: 5117825 (1992-06-01), Grevious
patent: 5127404 (1992-07-01), Wyborny et al.
patent: 5168871 (1992-12-01), Grevious
patent: 5292243 (1994-03-01), Blanchette et al.
patent: 5342315 (1994-08-01), Rowe et al.
patent: 5354319 (1994-10-01), Wyborny et al.
patent: 5562714 (1996-10-01), Grevious
Graves Kenneth L.
Grevious John J.
Sandberg Mark W.
van Leeuwen Anne J. C. J.
Kamm William E.
Medtronic Inc.
Patton Harold R.
Schaetzle Kennedy J.
Woods Thomas F.
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