Fixative device
AssigneeIso Tis N.V.
InventorsJeroen Mattijs Bezemer, Joost Robert De Wijn, Jan Nieuwenhuis, Paul Carel Hubertus De Joode, Clements Antoni Van Blitterswijk
Life of this patent
Estimating the term…
Abstract
The invention relates to a fixative device for bone tissue, which device comprises a copolymer of a polyalkylene glycol and an aromatic polyester.
Claims16
A fixative device for bone tissue, which device comprises a copolymer of a polyalkylene glycol terephtalate and an aromatic polyester.
A device according to any of the preceding claims, wherein the polyester is chosen from the group of poly(ethyleneterephtalate), poly(propyleneterephtalate), and poly(butyleneterephtalate).
A device according to any of the preceding claims, wherein the copolymer is a polyethylene glycol terephtalate/poly(butyleneterephtalate) copolymer.
A device according to any of the preceding claims, wherein the copolymer comprises 20-90 wt. %, preferably 40-70 wt. %, of the polyalkylene glycol terephtalate.
A device according to any of the preceding claims, wherein the polyalkylene glycol terephtalate has a weight average molecular weight of from 150 to 4000, preferably from 200 to 1500.
A device according to any of the preceding claims, further comprising a material that facilitates bone ingrowth.
A fixative device according to any of the preceding claims, comprising at least one swelling body including said copolymer.
A device according to any of the preceding claims, being a bone screw, a suture anchor, an ACL plug, a tapered or non-tapered pin, or a staple.
A device according to any of the preceding claims, comprising an elongate body portion extending along a central axis, the elongate body portion being on an outer surface thereof provided with screw thread, the pitch of the screw thread extending in axial direction.
The use of a swellable copolymer of a polyalkylene glycol terephtalate and an aromatic polyester for fixing a device to bone tissue.
A method of fixating a ligament to a bone, comprising:
- drilling a hole through the bone and axially feeding the ligament through the hole, such that free ends of the ligament extend from an end of the hole,
- axially inserting an elongate fixative device into the hole to press the ligament device into engagement with the wall of the hole;
- and
- tying the free ligament ends in a knot around a mantle surface of the fixative device.
Dependencies are inferred from the claim text.