Back to results
US 9,249,055 B2Granted
Prosthetic implant and method for forming a prosthetic implant
AssigneeROLLS-ROYCE plc
InventorsLisa M. Laughner, Paul Anthony Withey, Max Eric Schlienger, Tim Pruitt
Life of this patent
Estimating the term…
Abstract
One embodiment of the present invention is a unique prosthetic implant and method for making a prosthetic implant. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for prosthetic implants. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.
Claims33
A bone-implantable prosthetic device, comprising:
- an interface portion operative to interface the bone-implantable prosthetic device with an other structure;
- and
- a stem coupled to said interface portion, wherein the stem is structured for implantation to a desired depth into a bone tissue, and wherein the stem includes:
- a metallic body having a length corresponding to the desired depth of implantation;
- wherein said metallic body includes a support structure and a hollow pin, fin and/or lattice structure formed as a unitary structure and configured to transfer load between said stem and the bone tissue, wherein said pin, fin and/or lattice structure includes an outer ring shape that is integral with, disposed radially outward of, and fully encircles said support structure such that an offset is provided to create a space between the outer ring shape and the support, said pin, fin and/or lattice structure further including an inner ring shape that is integral with and fully encircles said support structure, the inner ring shape being disposed radially inward of the outer ring shape, and said pin, fin and/or lattice structure further including an intermediate ring shape that is integral with and fully encircles said support structure, the intermediate ring shape being disposed radially inward of the outer ring shape and outward of the inner ring shape.
2 more elements
A prosthetic implant, comprising:
- an interface portion operative to interface with an other structure;
- and
- a stem coupled to said interface portion, wherein the stem is structured for implantation to a desired depth into a bone tissue, and wherein the stem includes:
- a hollow body having a metallic outer ring structure, wherein the hollow body has a length corresponding to a desired depth of implantation, and wherein said outer ring structure fully encircles a central support member said hollow body and includes a first plurality of openings forming a metallic external lattice structure;
- a metallic inner ring structure disposed in said hollow body inward of said outer ring structure, wherein said inner ring structure includes a second plurality of openings forming a metallic internal lattice structure;
- a metallic intermediate ring structure disposed in said hollow body inward of said outer ring structure and outward of said inner ring structure, wherein said intermediate ring structure includes a third plurality of openings forming a metallic intermediate lattice structure;
- and
- the central support member being integral with and disposed within said hollow body radially inward of said outer ring structure such that an offset is provided to create a space between the outer ring structure and the central support member.
5 more elements
A prosthetic implant, comprising:
- an interface portion operative to interface with an other structure;
- and
- a stem coupled to said interface portion, wherein the stem is structured for implantation to a desired depth into a bone tissue, and wherein the stem includes:
- a metallic body having a length corresponding to a desired depth of implantation, wherein said metallic body includes a core member extending at least a portion of said length corresponding to the desired depth of implantation;
- an outer ring structure formed integrally with said core member and having said length corresponding to the desired depth of implantation, wherein said outer ring structure is disposed radially outward of and fully encircles said core member such that a space is created between said outer ring structure and said core;
- and wherein the outer ring structure has a first plurality of openings that form an external lattice structure;
- an inner ring structure formed integrally with said core member and disposed radially inward of said outer ring structure, wherein said inner ring structure includes a second plurality of openings that form an internal lattice structure;
- and an intermediate ring structure formed integrally with said core member disposed radially inward of said outer ring structure and outward of said inner ring structure, wherein said intermediate ring structure includes a third plurality of openings that form an intermediate lattice structure;
- and
- a plurality of metallic protrusions extending outwardly from said body and spaced apart from each other along the length of said body, wherein said protrusions are integrally formed with said body and are operative to engage the bone tissue.
7 more elements
A method of forming a prosthetic implant, comprising:
- freeform fabricating a ceramic mold having an integral core and integral shell, said ceramic mold structured to yield a cast prosthetic implant;
- sintering the ceramic mold;
- supplying a molten alloy to the sintered mold;
- and
- removing the ceramic mold to yield the cast prosthetic implant;
- wherein the cast prosthetic implant comprises:
- an interface portion operative to interface with an other structure;
- and
- a stem coupled to said interface portion, wherein the stem is structured for implantation to a desired depth into a bone tissue, and wherein the stem includes:
- a hollow body having a metallic outer ring structure, wherein the hollow body has a length corresponding to a desired depth of implantation, and wherein said outer ring structure fully encircles a central support member and includes a first plurality of openings forming a metallic external lattice structure;
- a metallic inner ring structure disposed in said hollow body inward of said outer ring structure, wherein said inner ring structure includes a second plurality of openings forming a metallic internal lattice structure;
- a metallic intermediate ring structure disposed in said hollow body inward of said outer ring structure and outward of said inner ring structure, wherein said intermediate ring structure includes a third plurality of openings forming a metallic intermediate lattice structure;
- and
- the central support member being integral with and disposed within said hollow body radially inward of said outer ring structure such that an offset is provided to create a space between the outer ring structure and the central support member.
11 more elements
A method of forming a prosthetic implant, comprising:
- electronically defining a ceramic mold having an integral core and integral shell for casting a prosthetic implant;
- freeform fabricating the ceramic mold using the electronic definition;
- supplying a molten alloy to the ceramic mold;
- solidifying the molten alloy;
- and
- leaching the ceramic mold to yield a cast prosthetic implant;
- wherein the cast prosthetic implant comprises:
- an interface portion operative to interface with an other structure;
- and
- a stem coupled to said interface portion, wherein the stem is structured for implantation to a desired depth into a bone tissue, and wherein the stem includes:
- a hollow body having a metallic outer ring structure, wherein the hollow body has a length corresponding to a desired depth of implantation, and wherein said outer ring structure fully encircles a central support member and includes a first plurality of openings forming a metallic external lattice structure;
- a metallic inner ring structure disposed in said hollow body inward of said outer ring structure, wherein said inner ring structure includes a second plurality of openings forming a metallic internal lattice structure;
- a metallic intermediate ring structure disposed in said hollow body inward of said outer ring structure and outward of said inner ring structure, wherein said intermediate ring structure includes a third plurality of openings forming a metallic intermediate lattice structure;
- and
- the central support member being integral with and disposed within said hollow body radially inward of said outer ring structure such that an offset is provided to create a space between the outer ring structure and the central support member.
12 more elements
Dependencies are inferred from the claim text.