Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1995-01-27
1997-03-11
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, A61F 232
Patent
active
056096488
ABSTRACT:
A joint socket (2) for a hip joint prosthesis comprises an outer shell (5) adapted for being anchored into a bone seat and an inner shell (6) adapted for receiving a ball of a joint. A threaded plug (10) is threadably coupled within a threaded bore (8) of the outer shell and a projection (22) extends from the polar region of the inner shell into an axial recess (20) of the threaded plug for centering the inner shell relative to the outer shell. The threaded plug seals off the inner volume of the outer shell, thereby preventing contact between rubbed off particles of the interacting inner and outer shells and the bone tissue. In addition, it allows the surgeon to directly observe the bone tissue lying behind the threaded bore of the implanted outer shell.
REFERENCES:
patent: 4211325 (1980-07-01), Wright
patent: 4955325 (1990-09-01), Zarnowski
patent: 5021062 (1991-06-01), Adrey
patent: 5360452 (1994-11-01), Engelhardt
Bider Kurt
Oehy J urg
Schoch Martin
Isabella David
Raffle John T.
Seka J. Georg
Sulzer Medizinaltechnik AG
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