| 摘要 |
The invention concerns an implantable mechanical device with adjustable geometry comprising, aligned and attached, an input components ( 1 ) having a first cylinder ( 11 ), an output component ( 2 ) having two second ( 21 ) and third ( 22 ) opposite cylinders, a reference component ( 3 ) integral in rotation with part of the organism and having a fourth cylinder ( 31 ). A friction spring ( 7 ) mounted astride on the first ( 11 ) and second cylinders ( 21 ) and a second friction spring ( 8 ), wound in an opposite direction of the spring ( 7 ) mounted astride on the third ( 22 ) and fourth ( 31 ) cylinders transform the reciprocating rotation applied to the input component ( 1 ) from outside the organism through means ( 931 ) into a rotation in a direction of the output component ( 2 ) which is helically connected ( 51, 52 ) to the driven component ( 4 ) integral with part of the organism by means ( 911 ), which is thereby translated. The device enables in particular manufacture of elongation nails and spiral rods.
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