Implantable orthopedic prosthesis having keyed taper connector
AssigneeSulzer Orthopedics Inc.
InventorsJames W. Burrows, Erin M. Johnson
Life of this patent
Estimating the term…
Abstract
A set of modular components from among which an implantable orthopedic hip prosthesis can be assembled. First and second implantable orthopedic femoral hip stem prosthesis each have a neck, the neck having a male conical taper surface. An implantable orthopedic femoral head prosthesis has a female conical taper surface. The respective male and female conical taper surfaces are sized and configured for mutual taper-locked interconnection if engaged, but at least one of the first and second implantable orthopedic femoral hip stem prosthesis is keyed in combination with the implantable orthopedic femoral head prosthesis to prevent engagement of the respective male conical taper surface with the female conical taper surface.
Claims21
A set of modular components from among which an implantable two-piece orthopedic hip prosthesis can be assembled, comprising:
- a first implantable orthopedic femoral hip stem prosthesis having a neck, said neck having a male conical taper surface;
- a second implantable orthopedic femoral hip stem prosthesis having a neck, said neck having a male conical taper surface;
- and
- an implantable orthopedic femoral head prosthesis connectable directly onto at least one of the first and second implantable orthopedic femoral hip stem prostheses and having an opening with a key located inside said opening, said opening having a female conical taper surface;
- said respective male and female conical taper surfaces being sized and configured for mutual taper-locked interconnection if engaged to form said two-piece orthopedic hip prosthesis;
- at least one of said first and second implantable orthopedic femoral hip stem prostheses being keyed in combination with said key in said opening to prevent engagement of the respective male conical taper surface with the female conical taper surface.
A set of modular components from among which an implantable two-piece orthopedic hip prosthesis can be assembled, comprising:
- a first implantable orthopedic femoral hip stem prosthesis having a neck, said neck having a male conical taper surface;
- a second implantable orthopedic femoral hip stem prosthesis having a neck, said neck having a male conical taper surface;
- a first implantable orthopedic femoral head prosthesis and a second implantable orthopedic femoral head prosthesis, each femoral head prosthesis connectable directly onto at least one of the first and second implantable orthopedic femoral hip stem prostheses and having an opening with a key located inside said opening, said opening having a female conical taper surface;
- said respective male and female conical taper surfaces being sized and configured for mutual taper-locked interconnection if engaged to form said two-piece orthopedic hip prosthesis;
- at least one of said first and second implantable orthopedic femoral hip stem prostheses being keyed in combination with said key in said opening of said first and second implantable orthopedic femoral head prosthesis to prevent engagement of the respective male conical taper surface with at least one but not all of the female conical taper surfaces.
A set of modular components from among which an implantable two-piece orthopedic hip prosthesis can be assembled, comprising:
- a first implantable orthopedic femoral hip stem prosthesis having a neck, said neck having a male conical taper surface;
- a second implantable orthopedic femoral hip stem prosthesis having a neck, said neck having a male conical taper surface;
- a first implantable orthopedic femoral head prosthesis and a second implantable orthopedic femoral head prosthesis, each femoral head prosthesis connectable directly onto at least one of the first and second implantable orthopedic femoral hip stem prostheses and having an opening with a key located inside said opening, said opening having a female conical taper surface;
- said respective male and female conical taper surfaces being sized and configured for mutual taper-locked interconnection if engaged to form said two-piece orthopedic hip prosthesis;
- at least one of said keys in said opening of said first and second implantable orthopedic femoral head prosthesis being keyed in combination with said first and second implantable orthopedic femoral stem prosthesis to prevent engagement of the respective female conical taper surface with at least one but not all of the male conical taper surfaces.
Dependencies are inferred from the claim text.