Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1991-07-22
1994-09-27
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
600 16, 336115, A61N 102
Patent
active
053504135
ABSTRACT:
An improved transcutaneous energy transfer (TET) device comprises a primary winding for placement on or near a skin surface, and a secondary winding for implantation under said skin surface. A field effect transistor (FET) is arranged to switch said primary coil across an external DC power supply. A tuning capacitor is linked to said primary coil whereby said primary coil, when said FET is turned off, will resonate at its natural frequency thereby compensating for drift in component values and reducing power transfer sensitivity to component drift. In an alternative aspect of the invention, a bidirectional communications link is provided for the transfer of data across a boundary layer by infrared signals. A plurality of transmitters are arranged in a circular pattern on one side of the boundary layer, whereas a receiver is positioned within the circular pattern along the opposite side of the boundary layer.
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Kamm William E.
The University of Ottawa
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