Surgery – Instruments – Orthopedic instrumentation
Patent
1991-10-22
1992-12-15
Brown, Michael A.
Surgery
Instruments
Orthopedic instrumentation
606 91, 606 99, 623 23, A61F 500, A61F 232, A61F 236
Patent
active
051712431
ABSTRACT:
An acetabular cup for use as a prosthetic implant has an insert with a body including a central bore for receiving a positioning rod therein. A key element is formed on the bore and is adapted to align the positioning rod. The insert has a locating element formed on an outer surface of the body and also includes spring elements extending radially outwardly from the body. The acetabular cup has a generally hemispherical shell member coupled to the outer surface of the insert. The shell has an outer surface for engaging the acetabulum and an inner surface having a circumferential groove for receiving the spring elements. The spring elements may be deflected radially inwardly out of engagement with the groove for releasing the insert from the shell. The shell has a plurality of apertures extending from its inner to its outer surface, which apertures are located in an asymmetrical pattern about the shell. The shell includes a recess on its open end for receiving the locating element on the insert to align the insert at a predetermined orientation with respect to the apertures in the shell. The engagement of the insert onto the shell and the engagement of the locating element in the recess aligns the key element on the central bore and, therefore, the positioning rod at a predetermined orientation with respect to the apertures in the shell.
REFERENCES:
patent: 3859992 (1975-01-01), Amstutz
patent: 4135517 (1979-01-01), Reale
patent: 4224698 (1980-09-01), Hopson
patent: 4305394 (1981-12-01), Bertuch
patent: 4475549 (1984-10-01), Oh
patent: 4528980 (1985-07-01), Kenna
patent: 4563778 (1986-01-01), Roche
patent: 4632111 (1986-12-01), Roche
patent: 4678472 (1987-07-01), Noiles
patent: 4801301 (1989-01-01), Noiles
Kashuba Glen A.
Klippel Jon I.
Akers Lawrence C.
Augustin Raymond W.
Brown Michael A.
Pfizer Hospital Products Group Inc.
Richardson Peter C.
LandOfFree
Acetabular cup positioning insert does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acetabular cup positioning insert, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acetabular cup positioning insert will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2089302