Surgery – Instruments – Orthopedic instrumentation
Patent
1993-02-18
1995-02-21
Hafer, Robert A.
Surgery
Instruments
Orthopedic instrumentation
606 73, 606 96, 606103, A61B 1758
Patent
active
053911717
ABSTRACT:
A pin-locked cannulated screwdriver assembly and method for the endosteal fixation of a graft by screw insertion by drilling a graft tunnel through adjacent bone masses and extending a graft attached between bone blocks under tension in the graft tunnel. A guide pin is secured within a cannulated screwdriver. The guide pin includes a mark for indicating the depth of insertion of an end of the pin. Using the screwdriver, the guide pin can be positioned between one of the cut bone blocks and one of the adjacent bone masses. The cannulated screwdriver is removed from the guide pin, with the guide pin remaining positioned between the one bone block and bone mass. A cannulated interference screw is positioned on the distal end of the screwdriver and the screwdriver and screw are slid over the positioned guide pin. The position of the cannulated screwdriver over the guide pin is then locked. Alternatively, the screwdriver can be locked over the guide pin initially, with the position of the guide pin adjusted so that end of the pin including the marking extends from the screwdriver. The cannulated interference screw is then positioned at the distal end of the screwdriver, and the entire assembly is inserted between the bone block and bone mass.
REFERENCES:
patent: 3351054 (1965-02-01), Florek
patent: 4877020 (1989-10-01), Vich
patent: 4927421 (1990-05-01), Goble
patent: 5049151 (1991-09-01), Durham
patent: 5139499 (1992-08-01), Small
patent: 5139520 (1992-08-01), Rosenberg
patent: 5152765 (1992-10-01), Ross
Arthrex Inc.
Hafer Robert A.
Kenealy David J.
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