Saint Louis University

Intramedullary nail device and method for repairing long bone

Intramedullary nail device and method for repairing long bone


Medical device

John Gary Bledsoe, Berton Roy Moed, Sridhar Condoor, Kevin Anthony Shields, Timothy Patrick Alford, Robert J. Miller, IV

This invention describes an intramedullary nail that is useful in the repair of long bone fractures, wherein the nail has a flexible state, which allows for the insertion of the nail through any number of incisions that may be off center of the intramedullary canal, and a rigid state, which allows the nail to provide adequate support to mend the long bone. Several embodiments of an intramedullary nail are described, including a nail comprising a shape memory nickel-titanium alloy, which has an austenite start temperature of about 15 degree C. and an austenite finish temperature of about 35 degree C., and a nail comprising loosely fitting multiple links that can be tightened to provide rigidity when properly set in the intramedullary canal.

US patent pending

Stephanie Kimzey

Higher purpose. Greater good.
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