Invention Grant
- Patent Title: Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod
- Patent Title (中): 包括具有可偏转柱和复合脊柱杆的骨锚的薄型脊椎假体
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Application No.: US13098280Application Date: 2011-04-29
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Publication No.: US08372122B2Publication Date: 2013-02-12
- Inventor: Charles J. Winslow , Steven T. Mitchell , John J. Flynn , James F. Zucherman , Ken Y. Hsu , Henry A. Klyce , H. Adam R. Klyce
- Applicant: Charles J. Winslow , Steven T. Mitchell , John J. Flynn , James F. Zucherman , Ken Y. Hsu , Henry A. Klyce , H. Adam R. Klyce
- Applicant Address: US CA Concord
- Assignee: Spartek Medical, Inc.
- Current Assignee: Spartek Medical, Inc.
- Current Assignee Address: US CA Concord
- Agency: Fliesler Meyer LLP
- Priority: WOPCT/US2009066567 20091203; WOPCT/US2010058776 20101202
- Main IPC: A61B17/70
- IPC: A61B17/70
Abstract:
A bone anchor comprising a self-centering ball-joint suitable for use in a spine stabilization prosthesis which supports the spine while providing for the preservation of spinal motion. The bone anchor has a deflectable ball-rod partially received in a socket of a housing formed in the head of the bone anchor. A centering rod received partially in the ball-rod and partially within the housing operates to align the ball-rod with the longitudinal axis of the bone anchor. Deflection of the ball-rod bends the centering rod which in turn applies a restoring force upon the ball-rod. The centering rod includes an inner-superelastic core and an outer polymer sheath.
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