A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
128/41
A61B 17/58 (2006.01) A61B 17/86 (2006.01) A61F 2/08 (2006.01) F16B 23/00 (2006.01) F16B 33/00 (2006.01) A61B 17/00 (2006.01) A61F 2/28 (2006.01)
Patent
CA 2035649
Express mail No. 311460550W ABSTRACT OF THE DISCLOSURE A fixation screw for securing a bone graft of a tendon section in place in a ligament tunnel is formed from a biocompatible plastic or bioabsorbable material. The tendon section is used to replace a ligament and has a tendon section attached at each end to bone grafts. The fixation screw is tightened between the bone graft and bone surrounding the ligament tunnel to secure the bone graft in place by forcing it against the bone surrounding the ligament tunnel. The material is soft compared to bone so that threads of the fixation screw do not cut into the bone graft or bone surrounding the ligament tunnel when the fixation screw is tightened. The fixation screw is formed to have integral instrumentation. A body is molded or fabricated as one piece from the material and has a threaded end, formed as an interference screw, and a relatively thicker handle portion connected to each other. The handle portion forms the integral instrumentation in that it is grasped to turn the fixation screw to tighten it. The threaded end is inserted between the bone graft and bone surrounding the ligament tunnel. The handle is turned to tighten the threaded end between the bone graft and surrounding bone. After the fixation screw has been tightened, the portion of the fixation screw which extends beyond the surface of the bone at which the ligament tunnel opens is trimmed off, leaving all surfaces flush. 0603A
Mahony Thomas H. III
Smart & Biggar
LandOfFree
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