Transcutaneous energy transfer device
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United States of America Patent
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-
May 26, 1998
Grant Date -
N/A
app pub date -
Jul 24, 1996
filing date -
Jul 24, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
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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