| 摘要 |
<p>An internal fixation device for securing bone fragments. The internal fixation device includes an elongate tubular sleeve (1) for insertion into the medullary canal of the bone fragments to be secured, an elongated shaft (2) movable within the sleeve, and at least two anchoring elements (31,32,33,34). Each anchoring element, (31,32,33,34) having an inner end coupled (31a,32a,33a,34a) to the shaft (2) and an outer end aligned with a slot (11,12,13,14) in the sleeve (1) and displaceable radially outward therethough to engage a bone fragment upon the movement of the shaft (2) within the sleeve (1): The inner ends of the anchoring elements coupled to the shaft (31a,32a,33a,34a) are oriented such that the outward displacement of one anchoring element (31,33) anchors the engaged bone fragment against movement in one longitudinal direction and the outward displacement of the other anchoring element (32,34) anchors the engaged bone fragment against movement in the opposite longitudinal direction.</p> |
