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US 6,663,634 B2Granted
Bone screw
AssigneeSynthes USA, LLC
InventorsMichael Ahrens, Urs Schlegel, Silvia Beer
Life of this patent
Estimating the term…
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.
Claims40
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.
2 more elements
An orthopedic fastener having a longitudinal axis comprising:
- 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.
2 more elements
An orthopedic fastener having a longitudinal axis comprising:
- 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.
2 more elements
Dependencies are inferred from the claim text.