Instrument for locking and unlocking a head of a bone anchor in a polyaxial bone anchoring device

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United States of America Patent

PATENT NO 11771478
SERIAL NO

17359045

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An instrument for locking and unlocking a head of a bone anchor relative to a receiving part of a polyaxial bone anchoring device includes a tube assembly with an inner tube and an outer tube at least partially around the inner tube, and an actuator assembly including an actuating mechanism movable from a first orientation to a second orientation to displace the inner tube and the outer tube relative to one another between a first axial position configured to unlock the bone anchoring device such that the head is pivotable relative to the receiving part, and a second axial position configured to lock the head. The actuator assembly is adjustable between a first configuration where the tube assembly assumes the first axial position when the actuating mechanism is moved, and a second configuration where the tube assembly assumes the second axial position when the actuating mechanism is moved.

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Patent Owner(s)

  • BIEDERMANN TECHNOLOGIES GMBH & CO. KG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Biedermann, Timo Trossingen, DE 119 723
Dold, Kevin Horb am Neckar, DE 7 54
Schünemann, Achim VS-Mühlhausen, DE 23 103

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