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US 9,848,978 B2Granted
Method of performing anterior cruciate ligament reconstruction using biodegradable interference screw
AssigneeDePuy Mitek, LLC
InventorsLisa M. Donnelly, Yufu Li, Joan M. Sullivan, Gregory R. Whittaker, J. Jenny Yuan
Life of this patent
Estimating the term…
Abstract
A method of replacing an ACL with a graft. The method provides for the drilling bone tunnels in a femur and a tibia. A replacement graft is provided having first and second ends. A biodegradable composite screw is provided. The screw is made from a biodegradable polymer and a bioceramic or a bioglass. At least one end of the graft is secured in a bone tunnel using the biodegradable composite screw.
Claims20
A method of manufacturing, comprising:
- introducing a dry bioceramic and a dry biodegradable polymer including poly(lactic acid) and poly(glycolic acid) into an extruder;
- blending the dry biodegradable polymer and the dry bioceramic in the extruder to form a composite;
- and
- molding the composite to form a surgical screw having a thread on an exterior surface thereof.
1 more element
A surgical method, comprising:
- introducing a graft into a bone;
- and
- after introducing the graft, inserting a screw into the bone such that an exterior surface feature of the screw penetrates into the bone, thereby securing the graft in a fixed position between the screw and the bone, the screw comprising poly(lactic acid), poly(glycolic acid), and a bioceramic.
A surgical method, comprising:
- forming a bone tunnel in bone;
- securing a graft to the bone within the bone tunnel;
- and
- rotating a screw into the bone tunnel such that the graft is pinned between the screw and a wall of the bone tunnel, the screw comprising poly(lactic acid), poly(glycolic acid), and a bioceramic.
1 more element
Dependencies are inferred from the claim text.