Antiluxation hip prosthesis

Details Antiluxation hip prosthesis Antiluxation hip prosthesis

1999-05-10

2000-07-25

Smith, Jeffrey A.

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

Implantable prosthesis

Bone

623 2224, 623 2229, 623 2217, A61F 234

Patent

active

060932082

ABSTRACT:
An antiluxation hip prosthesis (1) has: a hollow ring nut (2) which can be secured to the pelvis and delimits a receiving seat (2a); a cotyloid cavity or acetabular insert (3) which can be accommodated in the receiving seat and delimits a substantially hemispherical seat (3a); a spherical head (4) of an artificial femur which can be located in the seat of the cotyloid cavity; and a flange (5) which can be inserted onto the artificial femur to abut against the spherical head and rigidity coupled to the cotyloid cavity to keep the spherical head permanently in the seat so that it is free to perform articulated movements. The flange has a central hole with a concave radiused surface (21) which in use engages the spherical head. The flange is screwable about a cylindrical portion of the cotyloid cavity to mutually couple the flange to the cotyloid cavity. Alternatively, the flange and, cotyloid cavity are mutually coupled by a bayonet coupling.

REFERENCES:
patent: 3818512 (1974-06-01), Shersher
patent: 4795471 (1989-01-01), Oh
patent: 4798610 (1989-01-01), Averill et al.
patent: 5019105 (1991-05-01), Wiley
patent: 5062853 (1991-11-01), Forte
patent: 5092898 (1992-03-01), Bekki et al.
patent: 5263988 (1993-11-01), Huebner
patent: 5314491 (1994-05-01), Thongpreda et al.
patent: 5458649 (1995-10-01), Spotorno et al.
patent: 5755807 (1998-05-01), Anstaett et al.

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