Composite with porous swelling copolymer for bone fixation
AssigneeDrexel University
InventorsSorin Siegler, Giuseppe R. Palmese
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Abstract
The present invention relates to an implantable device that may be used for bone fixation comprising a combination of a solid swelling copolymer and a porous swelling copolymer. The present invention also relates embodiments where the implantable device is a suture anchor, and to osteochondral defect repair systems comprising the implantable device. The anchor may be configured for anchoring a repair system to bone; and a joint interface component can be affixed to the anchoring component and may be provided with a smooth surface adapted for articulation of natural cartilage of opposing bone along said surface.
Claims28
1-27. (canceled)
An implantable bone anchor comprising:
- a first portion for immediate fixation of the bone anchor to a bone upon implantation of the bone anchor, and
- a second portion including a swelling material that expands to provide long-term fixation to the bone.
A bone anchor comprising:
- a tip;
- an anchoring element including:
- a distal portion configured for connection to the tip,
- a proximal portion including two suture tunnels therein which are adapted for receiving a suture, and
- a central portion between the distal and proximal portions including an additional suture tunnel adapted for receiving the suture.
A method of preparing an implantable bone fixation device comprising steps of:
- forming a sacrificial template comprising one or more water soluble crystals,
- introducing a liquid copolymer into the sacrificial template,
- curing the sacrificial template comprising the liquid copolymer to form a polymer crystal composite, and
- washing the polymer crystal composite with water to remove the one or more of the water soluble crystals from the polymer crystal composite to form the bone fixation device.
Dependencies are inferred from the claim text.