Implantable bone lengthening apparatus
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United States of America Patent
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May 6, 1997
Grant Date -
N/A
app pub date -
Nov 27, 1995
filing date -
Nov 27, 1995
priority date (Note) -
Expired
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Abstract
An implantable bone lengthening apparatus may utilize an entirely self-contained lengthening mechanism which includes a shape memory material-powered hydraulic pump, a shape memory material-powered ratchet mechanism, a permeable head piston mechanism, and a bellows extension mechanism. The bone lengthening nails are more compact, simpler, eliminate unnecessary shifting or torsional movement, and maintain alignment of the bone during its natural healing process.
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