Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1994-11-18
1996-07-09
Willse, David H.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, 606 69, A61F 228, A61B 1786
Patent
active
055340270
ABSTRACT:
An orthopaedic implant assembly 1 including a securing member or screw 10 and sealing washer 20 assembled thereto. The assembly 1 further includes a base member 30 with a hole 31 therein for receiving the screw 10 and washer 20. The screw 10 includes an enlarged head 11 with an arcuate undersurface 14 with a groove surrounding head 11 for receiving the sealing washer 20 therein. The screw hole 31 includes a complementary arcuate surface to enable screw 10 to be inserted in a selectively variable angled orientation with respect to the screw hole 31 while the washer 20 provides a seal between the head 11 of screw 10 and the base member 30. The assembly 1 may further include an additional member 40 over the hole 31 and screw 10 and washer 20, such that this layer 40 generates wear debris. The sealing washer 20 provides a barrier to the advancement of the wear debris or particulate matter beyond the sealing washer 20.
REFERENCES:
patent: 1179136 (1916-04-01), Ollis
patent: 1868084 (1932-07-01), Wheelwright
patent: 2007179 (1935-07-01), Bullis
patent: 3329454 (1967-07-01), Melton et al.
patent: 3342513 (1967-09-01), Melton et al.
patent: 3441300 (1969-04-01), Ho
patent: 3882752 (1975-05-01), Gutshall
patent: 4235147 (1980-11-01), Weidner
patent: 4310273 (1982-01-01), Kirrish
patent: 4511276 (1985-04-01), Doult
patent: 4577450 (1986-03-01), Large
patent: 4705520 (1987-11-01), Ahrens
patent: 4794918 (1989-01-01), Wolter
patent: 4875474 (1989-10-01), Border
patent: 5040982 (1991-08-01), Stefan-Dogar
patent: 5125839 (1992-06-01), Ingber et al.
patent: 5127914 (1992-07-01), Calderale et al.
patent: 5163960 (1992-11-01), Bonutti
patent: 5209751 (1993-05-01), Farris et al.
patent: 5217498 (1993-06-01), Henssge et al.
patent: 5269784 (1993-12-01), Mast
Zimmer, Inc. brochure--"Acetabular Implant Systems" -- 1985, 1988.
Zimmer, Inc. brochure -- "MG II Total Knee System" -- 1992.
Zimmer, Inc. brochure -- "Versa-FX Femoral Fixation System" -- 1991.
Geringer Margaret L.
Willse David H.
Zimmer Inc.
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