Orthopedic implants, particularly bone screws, and methods for producing same
First Claim
Patent Images
1. An orthopedic implant having a bone-penetrating portion:
- a. formed primarily of a biodegradable material,b. having a surface coating thereon, the surface coating including microcapsules containing at least one of;
(1) a lubricant, and(2) a bioactive substance configured to promote bone growth,wherein the microcapsules are configured to rupture as the bone-penetrating portion penetrates bone.
1 Assignment
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Accused Products
Abstract
An orthopedic implant, such as a bone screw with a self-tapping thread, is formed of a biodegradable material such as a magnesium alloy. A bioactive surface coating is provided on the implant, such as at the threading. The coating contains micro-abrasives which assist with screw/implant penetration, and/or contains microcapsules containing lubricant, wherein the microcapsules rupture from pressure and frictional heat as the implant penetrates bone.
3 Citations
20 Claims
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1. An orthopedic implant having a bone-penetrating portion:
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a. formed primarily of a biodegradable material, b. having a surface coating thereon, the surface coating including microcapsules containing at least one of; (1) a lubricant, and (2) a bioactive substance configured to promote bone growth, wherein the microcapsules are configured to rupture as the bone-penetrating portion penetrates bone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An orthopedic implant having a bone-penetrating portion:
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a. formed primarily of a magnesium alloy, b. defining a screw having a self-tapping thread defined thereon, wherein at least a portion of surface of the thread bears microcapsules containing at least one of; (1) a lubricant, and (2) a bioactive substance configured to promote bone growth, wherein the microcapsules are configured to rupture as the bone-penetrating portion penetrates bone. - View Dependent Claims (17, 18, 19, 20)
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Specification