Surgery – Instruments – Orthopedic instrumentation
Patent
1996-06-04
1998-05-26
Buiz, Michael
Surgery
Instruments
Orthopedic instrumentation
606 88, 606170, 606180, A61B 1716
Patent
active
057557187
ABSTRACT:
Apparatus for removing bone from a femoral notch, or the like, which includes a guidewire and a router assembly. The router assembly comprises a cutting head fixed to a shaft rotatably disposed in a hole through a body portion of a shield assembly. A hood portion of the shield assembly extends from the body portion of the shield assembly and covers a first portion of the cutting head while leaving exposed a second portion of the cutting head. The guidewire extends through a hole in the shaft, a hole in the cutting head, and a hole in the shield assembly hood portion, such that the router assembly is movable along the guidewire. The shaft is rotatable in the shield assembly body portion such that the second portion of the cutting head is engageable with the bone and operative to remove portions of the bone. The guidewire is installed in the knee so that it extends along the length to be occupied by a graft ligament. The guidewire and router assembly are flexible so that the bone-trimming operation may be conducted dynamically as the knee is moved through a range of natural motions.
REFERENCES:
patent: 2429356 (1947-10-01), Hicks
patent: 5383884 (1995-01-01), Summers
patent: 5562669 (1996-10-01), McGuire
patent: 5593416 (1997-01-01), Donahue
Buiz Michael
Reip David O.
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