Interference screw and cannulated sheath for endosteal fixation

Details Interference screw and cannulated sheath for endosteal fixation Interference screw and cannulated sheath for endosteal fixation

1992-02-19

1993-05-18

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 73, 606 96, A61B 1758

Patent

active

052116476

ABSTRACT:
An interference screw and a cannulated sheath for fixating ligaments. A graft, attached between previously cut bone blocks, is placed under tension in a graft tunnel. The sheath has a cutout at one end such that during screw insertion, the graft is covered by the sheath and protected from the threads of the screw, while the bone to which the graft is being fixed is exposed to the threads of the screw. The screw is driven between the bone to which the graft is being fixed and a corresponding one of the bone blocks. The screw may be cannulated for insertion over a pre-positioned guide pin.

REFERENCES:
patent: 4259072 (1981-03-01), Hirabayashi
patent: 4450834 (1984-05-01), Fischer
patent: 4450835 (1984-05-01), Ashis
patent: 4716893 (1988-01-01), Fischer
patent: 4870957 (1989-10-01), Goble
patent: 4927421 (1990-05-01), Goble
patent: 4950270 (1990-08-01), Bowman
patent: 4961421 (1990-10-01), Muller

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