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US 10,646,346 B2Granted
Prosthetic implant support structure
AssigneeZimmer, Inc.
InventorsArlen D. Hanssen, David Lewallen
Life of this patent
Estimating the term…
Abstract
A prosthetic system that includes a prosthetic implant and a support structure secured to an inner surface of a cavity of a bone is disclosed. The support structure defines a channel that extends through the length of the support structure. The prosthetic implant is received in the channel, and a portion of the prosthetic implant is secured to an inner surface of the support structure by an adhesive. The support structure may comprise a pair of partially hemispherical components arranged in spaced apart relationship thereby defining the channel between the pair of components.
Claims47
A prosthetic system implantable in a cavity in an end of a bone, the prosthetic system comprising:
- a prosthetic implant including a stem component;
- a hollow sleeve for occupying an area in a cavity in an end of a bone, the hollow sleeve securable to an inner surface of the cavity, said hollow sleeve including an axial channel that extends through the length of the hollow sleeve for accommodating said stem component, wherein said hollow sleeve is formed separately from said stem component for subsequent connection to said stem component, said hollow sleeve capable of being positioned, by itself, in the cavity in the end of the bone and capable of being impacted and wedged, by itself, into the cavity in the end of the bone for obtaining a press fit of the hollow sleeve in the cavity prior to connecting the hollow sleeve to the stem component, wherein said hollow sleeve consists essentially of a porous metal material that is a bone ingrowth-receptive material with a porous structure for encouraging bone ingrowth and attachment throughout the hollow sleeve for restoring lost bone stock in the cavity in the end of the bone in the area occupied by the hollow sleeve when the hollow sleeve is implanted in the cavity in the end of the bone;
- and
- an adhesive deliverable to said axial channel for interdigitation into said porous structure for securing said stem component in said channel.
1 more element
An orthopedic device implantable in a cavity in an end of a bone, the orthopedic device comprising:
- a hollow sleeve for occupying an area in a cavity in an end of a bone, the hollow sleeve including an exterior surface securable to an inner surface of the cavity and an interior surface situated along an axial channel that extends through the length of the hollow sleeve for accommodating a stem component of a prosthetic implant, said hollow sleeve consisting essentially of a porous metal material that is a bone ingrowth-receptive material with a porous structure for encouraging bone ingrowth and attachment throughout the hollow sleeve for restoring lost bone stock in the cavity in the end of the bone in the area occupied by the hollow sleeve when the hollow sleeve is implanted in the cavity in the end of the bone, wherein the hollow sleeve is capable of being positioned, by itself, in the cavity in the end of the bone, and wherein the hollow sleeve, despite consisting essentially of said porous metal material, is capable of being impacted and wedged, by itself, into the cavity in the end of the bone for obtaining a press fit of the hollow sleeve in the cavity, with said bone ingrowth-receptive material providing both said exterior surface and said interior surface of said hollow sleeve.
An orthopedic device implantable in a cavity in an end of a bone, the orthopedic device comprising:
- a hollow sleeve for occupying an area in a cavity in an end of a bone, the hollow sleeve securable to an inner surface of the cavity, wherein said hollow sleeve consists essentially of a porous metal material that is a bone ingrowth-receptive material with a porous structure for encouraging bone ingrowth and attachment throughout the porous structure for restoring lost bone stock in the cavity in the end of the bone in the area occupied by the hollow sleeve when the hollow sleeve is implanted in the cavity in the end of the bone, said hollow sleeve including an exterior surface and an interior surface with said porous structure extending between said exterior surface and said interior surface, said interior surface situated along an axial channel that extends through the length of the hollow sleeve for accommodating a stem component of a prosthetic implant, wherein the hollow sleeve is capable of being positioned, by itself, in the cavity in the end of the bone, and wherein the hollow sleeve, despite consisting essentially of said porous metal material, is capable of being impacted and wedged, by itself, into the cavity in the end of the bone for obtaining a press fit of the hollow sleeve in the cavity.
An orthopedic device implantable in a cavity in an end of a bone, the orthopedic device comprising:
- a hollow sleeve for occupying an area in a cavity in an end of a bone, the hollow sleeve securable to an inner surface of the cavity, the hollow sleeve including an interior surface situated along an axial channel that extends through the length of the hollow sleeve for accommodating a stem component of a prosthetic implant, said hollow sleeve consisting essentially of a porous metal material that is a bone ingrowth-receptive material with a porous structure for encouraging bone ingrowth and attachment throughout the hollow sleeve for restoring lost bone stock in the cavity in the end of the bone in the area occupied by the hollow sleeve when the hollow sleeve is implanted in the cavity in the end of the bone, wherein the hollow sleeve is capable of being positioned, by itself, in the cavity in the end of the bone, wherein the hollow sleeve has an external geometry, and wherein the hollow sleeve, despite consisting essentially of said porous metal material, is capable of being impacted and wedged, by itself, into the cavity in the end of the bone for obtaining a press fit of the external geometry within the bone.
Dependencies are inferred from the claim text.