| 摘要 |
The bone marrow pin has at least one transverse hole (2) next to the fixture-head (1). A penetration point (3) has radially retractable anchoring-elements collected into a claw consisting of curved wires (6). When not retracted, the wires are elastically deformed inside the bone-marrow pin, from which they spring radially outwards when the claw is axially set, and assume their original curved shape. The inside of the pin has lengthwise guide grooves (7) each possessing a radial through-hole (8) for guiding the points (9) of the deformed wires to their radial outlet. |
