Patent ID: 6689135
Filing Date: 2004-02-10
Classification: A61B

Abstract:
An expandable bone fastener for fixation within a hole drilled in a bone comprising:(a) an outer tubular body having an expanded proximal end, a distal end, an elongate body portion therebetween and an axial bore, the body portion having an outer surface with a plurality of longitudinal slots therein; and (b) an expansion pin comprising an elongate core having a proximal end and a distal end, and an elongate body portion having a proximal end attached to said distal end of said core at a frangible joint, and a distal end, said body portion having an outer surface with a barbed portion comprising at least two elastically deformable barbs disposed in circumferentially spaced relationship with respect to an adjacent barb, extending outwardly from said outer surface; wherein when said barbed portion of said expansion pin is disposed within said axial bore of said outer tubular member, said barbs project into said slots of said outer tubular member.