Surgery – Instruments – Orthopedic instrumentation
Patent
1996-02-20
1997-12-02
Buiz, Michael
Surgery
Instruments
Orthopedic instrumentation
606 87, 606 82, 606 88, 606 96, A61B 1715
Patent
active
056930569
ABSTRACT:
A surgical instrument for shaping a patient's bone tissue at the joint to receive an implant includes a cutting block body that is sized and shaped to fit a patient's long bone at the joint during joint replacement surgery. The block is attachable to the patient's bone tissue at the joint area. A flat cutting guide surface on the block body is provided for guiding a surgeon's saw blade when the surgeon cuts bone tissue at the joint. A saw capture removably attaches to the block body at or near the flat cutting guide surface. The saw capture also provides a flat cutting guide surface thereon that is positioned generally parallel to the cutting guide surface on the block body during use, a gap being formed therebetween. Wedge locking connections are provided for affixing the saw capture to the block body at the flat cutting guide surface. The connection includes first and second interlocking connecting portions that are respectively on the block body and saw capture. The saw capture is gradually wedged against the block body upon assembly of the block body and the saw capture so that the flat cutting guide surface of the saw capture and the flat cutting guide surface of the block body gradually approach one another upon such assembly.
REFERENCES:
patent: 4474177 (1984-10-01), Whiteside
patent: 4487203 (1984-12-01), Androphy
patent: 4703751 (1987-11-01), Pohl
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Smith & Nephew Genesis.TM. Total Knee System Catalog.
Carls Thomas A.
Tammi Steven M.
Buiz Michael
Shai Daphna
Smith & Nephew Inc.
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