Fastener

Surgery – Instruments – Orthopedic instrumentation

Patent

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Details

606 73, 606104, A61B 1770

Patent

active

060397381

ABSTRACT:
An improved fastener is provided for use in retaining vertebrae in a desired spatial relationship. The fastener has a mounting section with a first external thread to engage a vertebra. The fastener has a retaining section with a second external thread to engage an internal thread on a retaining element, such as a nut. A circular intermediate section interconnects the mounting and retaining sections of the fastener. A plurality of spaced apart recesses are formed in the intermediate section. Each of these recesses has a surface for receiving force to rotate the fastener relative to a vertebra. The circular intermediate section may include an annular end surface which faces toward a retaining section and a cylindrical outer side surface. Each of the recesses has an opening which extends from the annular end surface into the cylindrical side surface.

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