Patent ID: 7118572
Filing Date: 2006-10-10
Classification: A61B

Abstract:
1. A compression screw assembly for delivery of an ortho-biological material to a fracture site comprising a lag screw, a side plate, an elongated adapter, and a compression screw, said lag screw having an elongated body with a leading end, a distal end, and a longitudinal bore, external threads on said leading end for engaging a bone proximal to a fracture site, said leading end of said lag screw having at least one tang exit hole, a tang body movably disposed in said longitudinal bore and having at least one tang leg mounted to a first end, said tang leg adapted to translate through said at least one tang exit hole upon movement of said tang body, and a second end of said tang body having internal screw threads adapted to seal said tang body, said distal end of said lag screw adapted to extend distally of said fracture site, a first connector on said distal end, at least one discharge hole in said elongated body between said external threads and said distal end, said side plate having a body with a distal surface and a proximal surface, an aperture in said plate sized to accommodated said distal end of said lag screw whereby said side plate is adapted to slide along said elongated body and exerts compressive force between an enlarged head and said external threads, said adapter being of a size to telescope within said through bore of said elongated body, said elongated adapter having a bore extending from one end and terminating in a fluid exit port near the other end, said other end beyond said fluid exit port having external screw threads adapted to engage said internal screw threads in said tang body, said one end adapted to be connected with a syringe and said fluid exit port adapted to register with said discharge hole in said elongated body whereby ortho-biological material may be delivered to a fracture site, said compression screw having said enlarged head on one end and a second connector on the other end, said second connector on said compression screw adapted to mate with said first connector whereby said compression screw exerts a compressive force between said enlarged head and said external threads reducing the fracture.