Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1987-10-06
1988-12-20
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 232
Patent
active
047923377
ABSTRACT:
An acetabulum part for a total hip prosthesis has a metallic anchoring shell (1) whose convex surface facing the pelvic bone essentially has the form of a spherical cap, with a socket insert (2) that can be inserted into the anchoring shell (1) whose external convex form is adjusted to the interior concave form of the anchoring shell (1) in such a way that it can be fixed against rotation without using bone cement in the anchoring shell (1). The internal concave form of the insert (2) allows for friction-free and undisturbed motion of a synthetic femur ball head. The shell (1) has several slits (9) located along the meridians of the spherical cap and has numerous holes (6) between the equatorial line and the pole of the spherical cap for the cement-free primary anchoring in the pelvic bone with anchoring screws (3).
REFERENCES:
patent: 3608096 (1971-06-01), Link
patent: 3840904 (1974-10-01), Tronzo
patent: 3903549 (1975-03-01), Deyerle
patent: 4662891 (1987-05-01), Noiles
patent: 4695282 (1987-09-01), Forte et al.
Schneider, Robert; "Aktuelle Probleme in Chirurgie und Orthop/a/ die", 1982, pp. 30-33.
"The Journalof Bone and Joint Surgery", 68-A, Apr. 1986, p. 91.
"The Journal of Bone and Joint Surgery", 68-B, May 1986, p. ii.
"The Year Book of Orthopedics", Chapter 3, p. 175.
Copy of photographs of model as submitted to the Swiss Patent Office, No. 110826.
Copy of photographs of model as submitted to the Swiss Patent Office, No. 110827.
Apley Richard J.
Farley Walter C.
Isabella David J.
Protek AG
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