Soft tissue fastener device
First Claim
1. An expandable fastener device for attaching soft body tissue to bone, said fastener device having an annular body, head means for affixing said soft body tissue to the bone made from a bioabsorbable polymer material being attached to the top of said annular body for contacting the soft body tissue, a shaft extending through said head means and said annular body, said shaft having a drill point below said annular body for extending through the soft tissue and drilling in bone for placing the soft body tissue against the bone, said annular body being expandable radially into the bone when compressed for fixing said annular body in place and said drill point and said shaft, drill point and said annular body being made from a surgical metallic material, said head having internal threads formed in a recess formed therein and said annular body having external threads complementing said internal threads and being in threadable engagement therewith.
1 Assignment
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Accused Products
Abstract
An expandable fastener device for attaching tissue to bone and a surgical operating technique for using it. The fastener device includes a shaft which will pierce tissue and when rotated, will drill a hole in bone with a drill point to receive the fastener in bone. The device can be drilled in place and fixed in place by actuation of the device itself. The anchor porion of the fastener device remaining in the body when the shaft is sheared and removed, is made from a a bioabsorbable polymer material and an implantable grade titanium material or alloy thereof. The portion of the fastener that captures the body soft tissue (tendon or ligaments) is biodegradable and the portion anchored to the bone is the titanium material. Another embodiment constructs the component that captures the body soft tissue into a pedal-like integral disk where each pedal flexes to conform to the shape of the bone surface adjacent thereto.
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Citations
15 Claims
- 1. An expandable fastener device for attaching soft body tissue to bone, said fastener device having an annular body, head means for affixing said soft body tissue to the bone made from a bioabsorbable polymer material being attached to the top of said annular body for contacting the soft body tissue, a shaft extending through said head means and said annular body, said shaft having a drill point below said annular body for extending through the soft tissue and drilling in bone for placing the soft body tissue against the bone, said annular body being expandable radially into the bone when compressed for fixing said annular body in place and said drill point and said shaft, drill point and said annular body being made from a surgical metallic material, said head having internal threads formed in a recess formed therein and said annular body having external threads complementing said internal threads and being in threadable engagement therewith.
Specification