Osteosynthetic shape memory material intramedullary bone stent and method for treating a bone fracture using the same

摘要

A method for providing stabilization and compression of a bone fracture, the method comprising: providing an intramedullary prosthesis sized for insertion into the intramedullary canal of a bone and having a distal end, a proximal end and a porous structure therebetween, wherein (i) in a first state, the prosthesis is longitudinally expanded and radially contracted, and (ii) in a second state, the prosthesis is longitudinally contracted and radially expanded, conforms to the shape of the adjacent bone and exerts forces on the adjacent bone; and positioning the intramedullary prosthesis within the intramedullary canal of a bone so that the intramedullary prosthesis spans the bone fracture, whereby to provide stabilization and compression of the bone fracture.

主权项

1. A method for providing stabilization and compression of a bone fracture, the method comprising:
providing an intramedullary prosthesis sized for insertion into the intramedullary canal of a bone, the intramedullary prosthesis consisting of a metallic mesh structure having a round cannulated mesh body terminating in a distal end and a proximal end, and at least two barbs projecting from the round cannulated mesh body; positioning the intramedullary prosthesis within the intramedullary canal of the bone so that the round cannulated mesh body spans the bone fracture, with at least one of the at least two barbs being disposed on one side of the bone fracture and at least one of the at least two barbs being disposed on the other side of the bone fracture; and radially expanding and longitudinally contracting the round cannulated mesh body so that the at least two barbs grip the side wall of the intramedullary canal on either side of the bone fracture and pull the bone segments on either side of the bone fracture together, whereby to provide stabilization and compression of the bone fracture.