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US 6,610,097 B2Granted
Prosthetic cup assembly which includes components possessing self-locking taper and associated method
AssigneeDePuy Orthopaedics, Inc.
InventorsJon C. Serbousek, Frank S. Bono, Stacey A. Trick, Duane G. Snyder, James G. Lancaster
Life of this patent
Estimating the term…
Abstract
A prosthetic device, such as an acetabular cup, includes a shell, a liner and a bearing. The bearing may be coupled to the liner so as to form a bearing-liner subassembly. The shell is provided with a female taper complimentary to a male taper on the liner. The liner-bearing subassembly may be secured to the shell by engaging the complimentary tapers.
Claims15
A prosthetic cup assembly, comprising:
- a shell defining a shell cavity, said shell including an inner surface configured with (i) a locking recess defined therein, and (ii) a female taper between said locking recess and said shell cavity;
- and
- a bearing defining a bearing cavity adapted to receive a prosthetic ball therein, said bearing having an outer surface configured with, and (ii) a locking member extending outwardly therefrom, and (ii) a male taper between said locking member and said bearing cavity,
- wherein when said bearing is positioned within said shell cavity, (i) said male taper and said female taper engage each other to provide a first connection between said bearing and said shell, and (ii) said locking member is located within said locking recess to provide a second connection between said bearing and said shell.
1 more element
A prosthetic cup assembly, comprising:
- a shell defining a shell cavity, said shell including an inner surface configured with (i) a first number of anti-rotation recesses defined therein, and (ii) a female taper between said anti-rotation recesses and said shell cavity;
- and
- a bearing defining a bearing cavity adapted to receive a prosthetic ball therein, said bearing having an outer surface configured with, and (ii) a second number of anti-rotation protrusions, and (ii) a male taper between said anti-rotation protrusions and said bearing cavity,
- wherein when said bearing is positioned within said shell cavity, (i) said male taper and said female taper engage each other to provide a first connection between said bearing and said shell, and (ii) said second number of anti-rotation protrusions are positioned within corresponding ones of said first number of anti-rotation recesses to provide a second connection between said bearing and said shell.
1 more element
A prosthetic cup assembly, comprising:
- a shell defining a shell cavity, said shell including an inner surface configured with (i) a first number of anti-rotation recesses defined therein, and (ii) a locking recess disposed between said anti-rotation recesses and said shell cavity and
- a bearing defining a bearing cavity adapted to receive a prosthetic ball therein, said bearing having an outer surface configured with, and (ii) a second number of anti-rotation protrusions, and (ii) a locking member disposed between said anti-rotation protrusions and said bearing cavity,
- wherein when said bearing is positioned within said shell cavity, (i) said locking member is positioned within said locking recess to provide a first connection between said bearing and said shell, and (ii) said second number of anti-rotation protrusions are positioned within corresponding ones of said first number of anti-rotation recesses to provide a second connection between said bearing and said shell.
Dependencies are inferred from the claim text.