Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1998-02-09
1999-11-30
Getzow, Scott M.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 102
Patent
active
059958740
ABSTRACT:
In the design of transcutaneous energy transfer devices variation in spacing between the coils results in energy transfer efficiency changes. These changes may have other causes. It is proposed to use an autotuning circuit and a voltage control circuit in cooperation with feedback from the internal coil in order to better maintain energy transfer levels as desirable. The feedback is typically provided via IR communication; however, when skin is highly pigmented, IR communication is inefficient. A method and system for using RF signals to accomplish the communication is disclosed.
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N. de N. Donaldson, "Use of feedback with voltage regulators for implants powered by coupled coils," Medical & Biological Engineering & Computing, Vol. 23, May 1985, p. 291.
Dew Engineering and Development Limited
Getzow Scott M.
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