Patent ID: 8241340

Claim:
A bone anchor system for anchoring a support member to a bone having a cavity formed therein, the system comprising: a body having a proximal end portion, a distal end portion and a longitudinal axis extending therebetween; a deformable member attached to the distal end portion of the body, the deformable member being deformable upon expansion from an unexpanded configuration to an expanded configuration in which the deformable member is spaced apart from the distal end portion of the body, the deformable member expanding in a radial direction; a sleeve for attaching the deformable member to the body, the sleeve configured such that when the deformable member is placed over the body, the sleeve slides over and frictionally engages the deformable member, thereby retaining the deformable member between the body and the sleeve; and a head region at the proximal end portion of the body, the head region having a support engagement channel extending through the head in a direction transverse to the longitudinal axis, the support engagement channel configured to receive a support member.