Modular hip prosthesis
AssigneeDePuy Inc.
InventorsRichard Bolesky, Todd S. Smith
Life of this patent
Estimating the term…
Abstract
A modular hip prosthesis for the replacement of a portion of the femur is provided. The prosthesis is assembled from a kit that includes a stem member having an upper portion and a lower portion, with the lower portion sized to be received in the femur. The kit also includes a body member that is sized to replace a portion of the femur and is configured to be received over the upper portion of a stem member. The kit also includes a head member that is sized to replace the head of the femur. A neck member is provided to attach the head member to the body member to form an assembled prosthesis.
Claims23
A kit for the assembly of a modular bone joint prosthesis for the replacement of a head, neck, and adjacent portions of a bone, the kit comprising
- at least two stems, with each stem sized for insertion into a cavity of the bone,
- at least two bodies, with each body sized to replace a portion of the bone, and with each body configured to be joined in fixed attachment to one of the at least two stems,
- at least two head members, with each head member sized to replace a head portion of the bone, and
- means for fixedly attaching one of the at least two head members to one of the at least two bodies.
A kit for assembly of a hip prosthesis for replacement of a head, neck, and adjacent portions of a femur resected in a plane, the kit comprising:
- at least two stem members having an upper portion and a lower portion, the lower portion sized to be received in a shaft of the femur,
- at least two body members sized to replace a portion of the femur and each body member configured so that any one of the at least two body members is receivable over said upper portion of any one of the at least two stem members and said body member having an upper surface defining a plane generally coincident with said resection plane, and
- at least two head members sized to replace the head of the femur and including means to attach any one of the at least two said head members to any one of said at least two body members adjacent said plane.
An implant system for replacing a portion of a femur, said femur having a neck and having a longitudinal cavity defining a first axis, the system comprising a plurality of components with each component being provided in various sizes and shapes, said components including at least two body members, each body member being formed to include a longitudinal bore that is generally aligned with said first axis and an upwardly and inwardly facing surface, at least two elongated stem members, each stem member having an upper portion and a lower portion, said lower portion configured to be received in said femur cavity and said upper portion configured to be received and secured in the bore of any one of the said at least two body members, and at least two head members, each head member being sized to replace a head of the femur, each head member being mounted on any one of said at least two bodies by a neck extending from said upwardly and inwardly facing surface, at least one of said at least two bodies having a porous metal surface for promoting bone ingrowth to assist in stabilizing said body in said femur, and further comprising fastening means for securing any one of said stem upper portions in any one of said body members bore.
Dependencies are inferred from the claim text.