Method of making a dynamic tension bone screw

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United States of America Patent

PATENT NO 4947502
SERIAL NO

07495352

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A dynamic bone fixation screw for rejoining fracture fragments of a bone to their approximate original mutual dispostion. It includes a threaded distal end member for threaded engagment with one of the bone fragments and a head member at a proximal end for engagement with another of the bone fragments. A spring member integral with and extending between the distal end member and the head member enables a predetermined torque to be initially imparted to the bone. When stress relaxation in the bone occurs, the spring member relaxes accordingly while continuing to draw the bone fragments together. The bone screw is fabricated in a unique manner.

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Patent Owner(s)

Patent OwnerAddress
DE PUY INC700 ORTHOPAEDIC DRIVE WARSAW IN 46581-0988

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Engelhardt, John A Warsaw, IN 17 2348

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