Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis
Patent
1990-12-21
1992-04-28
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
A61F 234
Patent
active
051084457
ABSTRACT:
A prosthetic acetabular cup 100 includes a fixation element 102 for introduction into the acetabulum. The fixation element 102 has a concave inner surface with a generally circular base formed in a plane generally perpendicular to the central longitudinal axis. A bearing component 7 is formed from a deformable material and has a concave opening therein for receiving a spherical head of a prosthetic femoral component. The bearing component 7 has an outer surface that nests within the concave inner surface of the fixation element 102. A snap lock mechanism is used to lock the bearing component 7 within the fixation element 102 in the axial direction. Both the fixation element 102 and the bearing component 7 include a plurality of circumferentially spaced recesses 3, 12 located around a common pitch circle adjacent the generally circular base of the fixation element 102. When aligned, the recesses 3, 12 form a combined recess of predetermined shape for receiving a pin 20 which is inserted therein to prevent relative rotation between the bearing component and the fixation element.
REFERENCES:
patent: 4324006 (1982-04-01), Charnley
patent: 4563778 (1986-01-01), Roche et al.
patent: 4566138 (1986-01-01), Lewis et al.
patent: 4676798 (1987-06-01), Noiles
patent: 4695282 (1987-09-01), Forte et al.
patent: 4704127 (1987-11-01), Averill et al.
patent: 4769041 (1988-09-01), Morscher
patent: 4795469 (1989-01-01), Oh
patent: 4919675 (1990-04-01), Dietschi
patent: 4955919 (1990-09-01), Pappas et al.
patent: 4960427 (1990-10-01), Noiles
Akers Lawrence C.
Augustin Raymond W.
Isabella David
Pfizer Hospital Products Group Inc.
Richardson Peter C.
LandOfFree
Prosthetic bearing assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Prosthetic bearing assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prosthetic bearing assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1245226