Patent ID: 7867264
Filing Date: 2011-01-11
Classification: A61B,A61F

Abstract:
1. Apparatus for attaching tissue to bone comprising: an expandable body defining a bore and configured to expand into bone, said expandable body comprising a distal tip member and a proximal main member, said distal tip member being of harder material than said proximal main member, said distal tip member having a threaded recess in a proximal surface thereof and said proximal main member having a distally extending threaded projection threadedly interengageable with the distal tip member recess; an expander pin comprising a shaft sized to be received in the bore of said expandable body and to expand said expandable body laterally when said expander pin is driven into said expandable body while said proximal main member and distal tip member are threadedly engaged; and an insertion shaft slidingly disposed in said bore of said expandable body and in a bore of said expander pin, the insertion shaft being releasably secured to the expandable body and extending distally beyond the expandable body; wherein, when said expander pin is driven into said expandable body, said expandable body is configured to attach to the bone.