Outer shell for an at least two-shell joint socket of a hip join

Details Outer shell for an at least two-shell joint socket of a hip join Outer shell for an at least two-shell joint socket of a hip join

1995-01-13

1997-07-08

Isabella, David

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 18, A61F 232

Patent

active

056456069

ABSTRACT:
The outer shell (5) comprises a plurality of through-holes (12) which are provided for the receipt of fastening elements (14) for the fastening of the outer shell (5) in a bone seat (4) and which are each provided with an inner counter-sink (25). The through-holes (12) which are free of fastening elements (14) are each provided with a sealing plug (15) which is insertable from the inside outwards and designed with a sealing surface supportable in and extending around the counter-sink (25). The sealing plug (15) comprises a number of spiral springs (18) which are insertable into the relevant through-hole (12) and form a snap connection with the wall of the through-hole (12), as well as a hat-like central projection (17) disposed separated from the spiral springs (18) which is provided with an inwardly open blind bore (17a) for the receipt of a placement tool (20) screwable into it. A reliable sealing off of the through-holes (12) is thus achieved and escape into the bone seat 4 of any rubbed-off particles produced within the outer shell 5 is prevented.

REFERENCES:
patent: 4388921 (1983-06-01), Sutter et al.
patent: 4484570 (1984-11-01), Sutter et al.
patent: 4653487 (1987-03-01), Maale
patent: 4955325 (1990-09-01), Zarnowski
patent: 5074879 (1991-12-01), Pappas et al.
patent: 5246459 (1993-09-01), Elias
patent: 5330535 (1994-07-01), Moser et al.

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