Tissue integration design for seamless implant fixation
First Claim
Patent Images
1. A musculo-skeletal implant comprising:
- a biologic core material;
a fenestrated shell component comprising at least an outer fenestrated shell connected to an inner fenestrated shell, each of the inner and outer fenestrated shells defining a fenestrated tubular wall of intercrossing members to form a mesh, one wall inside the other and mostly spaced apart from each other to define a mostly open chamber therebetween, the inner tubular wall further defining and located entirely around a hollow bore therein, the fenestrated shell being permanently fixable with a host body tissue by integration of at least one of the inner and outer fenestrated shells therewith;
wherein the fenestrated shell component further comprises interconnecting members extending between an outside of the inner shell and an inside of the outer shell and that are located entirely between ends of the inner and outer shells, the inner and outer shells being interconnected with the interconnecting members;
wherein the tubular walls together define an open first end between the tubular walls;
wherein the biologic core material is located in the open chamber between the inner and outer shells;
wherein the biologic core material is small enough to enter the open chamber through the open first end between the tubular walls and large enough to be contained by the inner and outer fenestrated shells in the open chamber;
wherein each fenestrated tubular wall comprises openings large enough to permit bone material to grow into the open chamber between the walls; and
wherein the fenestrated tubular wall of the outer shell is exposed to permit contact with body tissue.
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Abstract
The present invention relates to orthopaedic implants having a fenestrated hollow shell and a biologic core. These design features provide an improved interface between the implant and the surrounding tissue, aiding fixation, and provide a vehicle for applying new bone healing and enhancing modalities, such as gene therapy, tissue engineering, and growth factors.
57 Citations
42 Claims
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1. A musculo-skeletal implant comprising:
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a biologic core material; a fenestrated shell component comprising at least an outer fenestrated shell connected to an inner fenestrated shell, each of the inner and outer fenestrated shells defining a fenestrated tubular wall of intercrossing members to form a mesh, one wall inside the other and mostly spaced apart from each other to define a mostly open chamber therebetween, the inner tubular wall further defining and located entirely around a hollow bore therein, the fenestrated shell being permanently fixable with a host body tissue by integration of at least one of the inner and outer fenestrated shells therewith; wherein the fenestrated shell component further comprises interconnecting members extending between an outside of the inner shell and an inside of the outer shell and that are located entirely between ends of the inner and outer shells, the inner and outer shells being interconnected with the interconnecting members; wherein the tubular walls together define an open first end between the tubular walls; wherein the biologic core material is located in the open chamber between the inner and outer shells; wherein the biologic core material is small enough to enter the open chamber through the open first end between the tubular walls and large enough to be contained by the inner and outer fenestrated shells in the open chamber; wherein each fenestrated tubular wall comprises openings large enough to permit bone material to grow into the open chamber between the walls; and wherein the fenestrated tubular wall of the outer shell is exposed to permit contact with body tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40)
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39. The musculo-skeletal implant 1, wherein the implant comprises an extracorporeal prosthesis portion.
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41. A musculo-skeletal implant comprising:
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a solid non-fenestrated portion configured to be located outside a bone; a biologic core material; a fenestrated shell component attached to the solid non-fenestrated portion and configured to be at least partly implanted inside the bone, the fenestrated shell component comprising at least an outer fenestrated shell connected to an inner fenestrated shell, each of the inner and outer fenestrated shells defining a fenestrated tubular wall of intercrossing members to form a mesh, one wall inside the other and mostly spaced apart from each other to define a mostly open chamber therebetween, the inner tubular wall further defining and located entirely around a hollow bore therein, the fenestrated shell component being permanently fixable with a host body tissue by integration of at least one of the inner and outer fenestrated shells therewith; wherein the fenestrated shell component further comprises interconnecting members extending between an outside of the inner shell and an inside of the outer shell and that are located entirely between ends of the inner and outer shells, the inner and outer shells being interconnected with the interconnecting members; wherein the tubular walls together define an open first end between the tubular walls; wherein the biologic core material is located in the open chamber between the inner and outer shells; wherein the biologic core material is small enough to enter the open chamber through the open first end between the tubular walls and large enough to be contained by the inner and outer fenestrated shells in the open chamber; wherein each fenestrated tubular wall comprises openings large enough to permit bone material to grow into the open chamber between the walls; and wherein the fenestrated tubular wall of the outer shell is exposed to permit contact with body tissue.
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42. A musculo-skeletal implant comprising:
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a biologic core material; a fenestrated shell component comprising at least an outer fenestrated shell connected to an inner fenestrated shell, each of the inner and outer fenestrated shells defining a fenestrated tubular wail of intererossing members to form a mesh, one wall inside the other and mostly spaced apart from each other to define a mostly open chamber therebetween, the inner tubular wall further defining and located entirely around a hollow bore therein, the fenestrated shell component being permanently fixable with a host body tissue by integration of at least one of the inner and outer fenestrated shells therewith; wherein the fenestrated shell component further comprises interconnecting members extending between an outside of the inner shell and an inside of the outer shell and that are located between ends of the inner and outer shells, the inner and outer shells being interconnected with the interconnecting members, at least one of the interconnecting members being located at an outermost edge of the fenestrated shell component; wherein the tubular walls together define an open first end between the tubular walls; wherein the biologic core material is located in the open chamber between the inner and outer shells; wherein the biologic core material is small enough to enter the open chamber through the open first end between the tubular walls and large enough to be contained by the inner and outer fenestrated shells in the open chamber; wherein each fenestrated tubular wall comprises openings large enough to permit bone material to grow into the open chamber between the walls; and wherein the fenestrated tubular wall of the outer shell is exposed to permit contact with body tissue.
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Specification