Orthopaedic screws
First Claim
Patent Images
1. An orthopaedic device comprising:
- a therapeutic agent; and
a screw having a reservoir and a plurality of porous bands in fluid connection with said reservoir and extending from said reservoir to an outside surface of the screw, said plurality of porous bands being separated by at least one non-porous region of the screw, said screw configured to deliver said therapeutic agent from said reservoir through said plurality of porous bands to a surrounding tissue when said screw is implanted in said tissue.
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Abstract
An orthopaedic screw having a plurality of regions, at least one of which may be porous. The orthopaedic screw includes a head, a tip and at least one thread. The porosity of the screw of the present invention can vary within the part or region, including changes in pore shape, size and density. These characteristics can vary along the length of the screw axis and/or radially (from the outer diameter to the axis). The orthopaedic screw may further include at least one solid region formed of any implantable polymer, reinforced polymer or metal.
362 Citations
8 Claims
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1. An orthopaedic device comprising:
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a therapeutic agent; and a screw having a reservoir and a plurality of porous bands in fluid connection with said reservoir and extending from said reservoir to an outside surface of the screw, said plurality of porous bands being separated by at least one non-porous region of the screw, said screw configured to deliver said therapeutic agent from said reservoir through said plurality of porous bands to a surrounding tissue when said screw is implanted in said tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification