Method and apparatus for locating implanted receiver and feedback regulation between subcutaneous and external coils
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 29, 2002
Grant Date -
N/A
app pub date -
Mar 22, 2000
filing date -
Mar 22, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for proximity sensing and feedback regulation between a bodily implanted secondary coil and an external primary coil applied for generating and propagating a well-defined set of excitation signals used for nerve or muscle stimulation. The complete device is a combination of external and implantable or internal components. The internal component contains a relatively small magnet composed of materials that exhibit Giant Magneto-resistor characteristics, passive circuitry and a secondary coil. The external coil contains proximity sensor circuitry that is rigidly connected in a convenient enclosure mounted supercutaneously. Feedback information of the position of the implanted coil is provided to the pulse generation circuit and the parameters are adjusted to compensate for any variation in the position of the internal coil in order to maintain the necessary signal pattern.
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