Patent ID: 8702768
Filing Date: 2014-04-22
Classification: A61B

Abstract:
1. A system for maintaining a compressive load in a fracture between a first bone fragment and a second bone fragment, said system comprising a sleeve, a shaft, and a compression device, wherein said shaft, said sleeve, and said compression device are assembled prior to insertion into said first bone or said second bone fragments, wherein said shaft is reciprocally received within said sleeve, wherein a proximal end of said shaft remains between a distal end of said sleeve and a proximal end of said sleeve, wherein said compression device is located within said sleeve, and said compression device is engaged between a proximal end of said shaft and a proximal end of said sleeve, wherein said sleeve is retained within said first bone fragment, wherein said shaft is retained within said second bone fragment such that said sleeve and said shaft are configured to gradually collapse along with a collapse of said fracture; wherein said system is cannulated along its entire length; wherein said proximal end of said sleeve comprises a recessed region comprising a ledge; wherein said compression device comprises a helical coil having one end abutting said ledge and a second end fixedly attached to said proximal end of said shaft; wherein said shaft and said sleeve rotate together by means of mating longitudinally extending flat surfaces on each of said sleeve and said shaft.