Invention Grant
US07828828B2 Intervertebral joint 有权
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Intervertebral joint
Abstract:
An intervertebral joint with one embodiment comprising a socket screw, a ball screw, and two support screws. The socket screw and ball screw form a socket joint between two vertebral members. A first support screw braces the socket screw. A second support screw braces the ball screw.
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