Bone growth stimulator
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United States of America Patent
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-
Jun 8, 1982
Grant Date -
N/A
app pub date -
Jul 20, 1979
filing date -
Jul 20, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is disclosed an improved implantable bone growth stimulator having a titanium, bullet-shaped case and pre-stretched helical electrode leads. The leads are sheathed, and the circuitry in the case is potted in silicone elastomer. The shape of the case lends itself to long-bone applications. The potting material is ideal for preventing ionic contamination of the circuit, while the metal case offers the requisite mechanical strength. The shape of the case facilitates removal during an explant procedure, and the pre-stretching of the leads prevents tissue damage at this time. The electrical circuit is a stacked assembly of components without a circuit board, which gives rise to the desired bullet shape of the case.
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