Patent ID: 6203543
Filing Date: 2001-03-20
Classification: A61B,Y10S

Abstract:
A device for releasably securing an object to a bone, said device comprising:a rotation restricting member having an engaging element which engages the bone to restrict rotation of the member;a fastening mechanism for fastening the rotation restricting member to a bone screw engaging the bone, said fastening mechanism comprising a retainer fixed to the bone screw, said retainer having a stop which engages the rotation restricting member such that insertion of the bone screw to a predetermined depth in the bone biases the engaging element to engage the bone, thereby restricting rotation of the rotation restricting member;a clamp for releasably securing the object to the rotation restricting member or the bone screw;wherein after the fastening mechanism has fastened the rotation restricting member to the bone screw, the rotation restricting element is biased towards the bone such that the engaging element engages the bone to restrict rotation of the member; andwherein releasably securing the object to the clamp axially and rotationally secures the object to the bone.