Bone screw
First Claim
Patent Images
1. A bone pin formed of a biocompatible material comprising:
- a first portion located at a distal end of the pin having a threaded section for insertion into bone;
a second portion located at a proximal end of the pin; and
a third portion located between the first and second portions, wherein the third portion is at least partially coated with an antibacterial agent directly deposited on the biocompatible material free of any intermediate layer, and the antibacterial agent forms a plurality of rings spaced axially along the third portion.
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Accused Products
Abstract
A bone fastener which prevents infection that can be used, for example, to attach an external fixation device to bone. The fastener may be partially coated with an antibacterial agent (such as silver) directly deposited on the biocompatible material to prevent infection. The coating can be applied to the fastener in a number of different ways in a wide variety of patterns.
232 Citations
40 Claims
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1. A bone pin formed of a biocompatible material comprising:
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a first portion located at a distal end of the pin having a threaded section for insertion into bone;
a second portion located at a proximal end of the pin; and
a third portion located between the first and second portions, wherein the third portion is at least partially coated with an antibacterial agent directly deposited on the biocompatible material free of any intermediate layer, and the antibacterial agent forms a plurality of rings spaced axially along the third portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
threadably inserting the first portion of at least one bone pin of claim 1 into a bone; and
applying an electric current to the at least one bone pin to stimulate formation of new bone and increase infection resistance of the antibacterial agent.
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14. The method of claim 13, wherein the electric current is about 0.25 μ
- A.
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15. The method of claim 13, wherein the electric current is between about 5 μ
- A and about 20 μ
A.
- A and about 20 μ
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16. An orthopedic fastener having a longitudinal axis comprising:
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a distal end having threads for anchoring the fastener into bone;
a proximal end having an attachment site for an orthopedic instrument; and
a bactericidal shank having an outer surface for contacting soft tissue, the outer surface of the shank formed from a biocompatible material that is at least partially coated with an antibacterial agent, the antibacterial agent forming a plurality of segments on the biocompatible material for selectively treating the soft tissue, wherein the biocompatible material and the antibacterial agent are adapted to selectively release the antibacterial agent in-vivo and provide infection prophylaxis for the soft tissue. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. An orthopedic fastener having a longitudinal axis comprising:
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a distal end having threads for anchoring the fastener into bone;
a proximal end having an attachment site for an orthopedic instrument; and
a bactericidal shank having an outer surface for contacting soft tissue, the outer surface of the shank formed from a biocompatible material that is at least partially coated with an antibacterial agent, wherein the biocompatible material and the antibacterial agent are adapted to selectively release the antibacterial agent in-vivo and provide infection prophylaxis for the soft tissue and the threads are not coated with the antibacterial agent.
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Specification