Surgery – Instruments – Orthopedic instrumentation
Patent
1997-02-21
1998-09-22
Tucker, Guy V.
Surgery
Instruments
Orthopedic instrumentation
606 88, 606 96, A61B 1756
Patent
active
058108297
ABSTRACT:
A posterior stabilized/constrained reamer guide is provided that enables a surgeon to prepare a patient s distal femur to receive either a posterior stabilized or a constrained type femoral component. The instrument guide has an opening the largest anterior to posterior housing size. For example, a constrained housing has a longer anterior to posterior dimension than a posterior stabilized housing. The apparatus of the present invention provides an improved reamer guide that addresses differences in housing sizes and necessary bone removal. The apparatus provides a housing guide that accepts either a posterior stabilized collet or a constrained collet. Each of the collets accepts a rotary reamer or a box chisel. During surgery, the reamer is first used to form a cylindrically-shaped or oval shaped cut. The box chisel then removes additional bone to create a rectangular or squared opening. This insures that only the necessary bone is removed for each housing depending upon the one selected by the surgeon.
REFERENCES:
patent: 5423827 (1995-06-01), Mumme et al.
patent: 5454816 (1995-10-01), Ashby
patent: 5514140 (1996-05-01), Lackey
patent: 5593411 (1997-01-01), Stalcup et al.
patent: 5658292 (1997-08-01), Axelson, Jr. et al.
Elliott Scott
Lackey Jennifer J.
Tammi Steve M.
Tokish, Jr. Leonard J.
Smith & Nephew Inc.
Tucker Guy V.
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