A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/56 (2006.01) A61B 17/70 (2006.01)
Patent
CA 2275047
A device to releasably secure an object to a bone is disclosed. The device has a rotation restricting member which, while engaging the bone, prevents rotation of the member. The device also comprises an axial supporting member which axially secures the device to the bone, and preferably comprises a bone screw. While the bone screw and rotation restricting member engage the bone, a fastening mechanism fastens the rotation restricting member to the bone screw. In this way, objects can be releasably secured to the rotation restricting member or the bone screw by means of a clamp to temporarily axially and rotationally secure the objects to the bone. Preferably, the rotation restricting member comprises a sleeve and the fastening mechanism comprises a nut which engages threads on the bone screw. The sleeve comprises serrated teeth which, when biased towards the bone, engage the bone to restrict rotation of the sleeve. Rotation of the nut about the threads on the bone screw axially bias the sleeve towards the bone such that the serrated teeth engage the bone to restrict rotation of the sleeve about the screw and to fasten the sleeve to the bone screw.
Glossop Neil David
Philips Electronics Ltd Philips Electronique Ltee
Riches Mckenzie & Herbert Llp
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