Interlocking IM nails with outer screw

Abstract

This invention is a mechanism and design that uses headless screws that interlock with the Intramedullary Nail. Canulated outer screws engage the threads of the headless screws and further locks into the Intramedullary Nail. A sleeve on the outer end of the headless screw will aid in centering of the IM Nail. This process may be repeated contra laterally for optimal fixation and centering of the IM Nail when allowed by the anatomy. This mechanism ensures no play in the screw-nail interface which is inherent in current interlocking designs.

1 . A mechanism to secure Intramedullary Nails by using headless screws to interlock with the Intramedullary Nail with a canulated outer screw that engages the headless screw's threads and further locks onto the Intramedullary Nail. This process may be repeated contra laterally. This mechanism immobilizes the Intramedullary Nail to maintain fracture reduction and aids in centering of the IM Nail.