Transcutaneous energy transmission circuit for implantable medic

Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A61N 1378

Patent

active

056906935

ABSTRACT:
An improved transcutaneous energy transmission device is disclosed for charging rechargeable batteries in an implanted medical device. A current with a sinusoidal waveform is applied to a resonant circuit comprising a primary coil and a capacitor. Current is induced in a secondary coil attached to the implanted medical device. Two solid state switches are used to generate the sinusoidal waveform by alternately switching on and off input voltage to the resonant circuit. The sinusoidal waveform reduces eddy current effects in the implanted device which detrimentally increases the temperature of the implanted device. The present invention charges the batteries using a charging protocol that reduces charging current as the charge level in the battery increases. The controller preferably is constructed as a pulse width modulation device with a variable duty cycle to control the current level applied to the primary coil. An alignment indicator also is provided to insure proper alignment between the energy transmission device and the implanted medical device.

REFERENCES:
patent: 3195540 (1965-07-01), Waller
patent: 3454012 (1969-07-01), Raddi
patent: 3824129 (1974-07-01), Fagan
patent: 3865101 (1975-02-01), Saper et al.
patent: 3867950 (1975-02-01), Fischell
patent: 3888260 (1975-06-01), Fischell
patent: 3942535 (1976-03-01), Schulman
patent: 4014346 (1977-03-01), Brownlee et al.
patent: 4057069 (1977-11-01), Dorffer et al.
patent: 4082097 (1978-04-01), Mann et al.
patent: 4096856 (1978-06-01), Smith et al.
patent: 4096866 (1978-06-01), Fischell
patent: 4134408 (1979-01-01), Brownlee et al.
patent: 4172459 (1979-10-01), Hepp
patent: 4275739 (1981-06-01), Fischell
patent: 4323075 (1982-04-01), Langer
patent: 4409647 (1983-10-01), Terkanian
patent: 4432363 (1984-02-01), Kakegawa
patent: 4548209 (1985-10-01), Wielders et al.
patent: 4572191 (1986-02-01), Mirowski et al.
patent: 4635639 (1987-01-01), Hakala et al.
patent: 4661107 (1987-04-01), Fink
patent: 4665896 (1987-05-01), LaForge et al.
patent: 4787389 (1988-11-01), Tarjan
patent: 4827936 (1989-05-01), Pless et al.
patent: 4903699 (1990-02-01), Baker, Jr. et al.
patent: 5279292 (1994-01-01), Baumann et al.
patent: 5285779 (1994-02-01), Cameron et al.
patent: 5314453 (1994-05-01), Jeutter
patent: 5350413 (1994-09-01), Miller
Sipex Corporation Signal Processing Excellence; Analog Array ASIC Design Manual, Mar. 1991 (Chapter 3).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Transcutaneous energy transmission circuit for implantable medic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transcutaneous energy transmission circuit for implantable medic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transcutaneous energy transmission circuit for implantable medic will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2102897

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.