Elevated implant for the reconstruction of meniscus defects or partial meniscus defects

Patent metadata

Field	Value
Publication number	US-9445908-B2
Application number	US-82840710-A
Country	US
Kind code	B2
Filing date	Jul 1, 2010
Priority date	Jul 6, 2009
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

An implant for reconstructing meniscus defects or partial meniscus defects includes an elevated molding with a femoral condylar contact area, a tibial condylar contact area and an articular capsule contact area, in the manner of an artificial meniscus or artificial partial meniscus with a contour of an outer area that is substantially the same as a natural meniscus or partial meniscus, wherein at least one additional elevation is formed on the outer area of the elevated molding.

First claim

The invention claimed is:

1. An implant for reconstructing meniscus defects or partial meniscus defects comprising an elevated molding with a femoral condylar contact area, a tibial condylar contact area and an articular capsule contact area, wherein the elevated molding extends in a transverse slope and at least one additional elevation is formed on an outer area of the elevated molding and wherein the elevated molding and the at least one additional elevation are formed in one piece, and wherein the elevated molding is of an open-pore form only in a region of its articular capsule contact area, wherein the elevated molding has a closed pore form in the femoral condylar contact area and/or tibial condylar contact area.

2. The implant as claimed in claim 1 , having a compound structure comprising the elevated molding and the at least one additional elevation as a composite.

3. The implant as claimed in claim 1 , wherein the elevated molding and the at least one additional elevation are connected to each other along a common boundary surface.

4. The implant as claimed in claim 1 , wherein the at least one additional elevation is formed on the femoral condylar contact area, tibial condylar contact area and/or articular capsule contact area of the elevated molding.

5. The implant as claimed in claim 1 , which is completely resorbable.

6. The implant as claimed in claim 1 , wherein the at least one additional elevation is formed from a different material than the elevated molding.

7. The implant as claimed in claim 1 , wherein the at least one additional elevation is formed from a more quickly resorbable material than the elevated molding.

8. The implant as claimed in claim 1 , wherein the at least one additional elevation has a layered structure formed from materials with different resorption rates.

9. The implant as claimed in claim 8 , wherein layers of the at least one additional elevation form a resorption gradient, the resorption rate of the layers increasing substantially continuously from a side of the at least one additional elevation that is facing elevated molding to an opposite side of the at least one additional elevation.

10. The implant as claimed in claim 1 , wherein the at least one additional elevation is formed from a softer, more elastic material than the elevated molding.

11. The implant as claimed in claim 1 , wherein the at least one additional elevation is an open-pore form.

12. The implant as claimed in claim 1 , wherein the at least one additional elevation contains closed pores.

13. The implant as claimed in claim 1 , wherein the elevated molding and/or the at least one additional elevation have open pores that are at least partially filled with a resorbable and/or viscous material.

14. The implant as claimed in claim 1 , wherein elevated molding and/or the at least one additional elevation is of a disk-shaped, semicircular, sickle-shaped or crescent-shaped form.

15. The implant according to claim 1 , wherein the elevated molding and/or the at least one additional elevation has anchorage elements selected from the group consisting of anchor hooks, anchor flukes, anchor pins, anchor screws, filamentary structures and combinations thereof.

16. The implant as claimed in claim 1 , wherein the elevated molding and/or the at least one additional elevation is formed from a natural polymer or biopolymer and/or synthetic polymer selected from the group comprising proteins, polysaccharides, polyhydroxyalkanoates, polyvinyl alcohol, polyurethanes and combinations thereof.

17. The implant as claimed in claim 1 , wherein the elevated molding and/or the at least one additional elevation is inoculated with autologous body cells, selected from the group consisting of chondrocytes, chondroblasts, synovial cells, fibroblasts, precursor cells thereof, stem cells thereof and combinations thereof.

18. The implant as claimed in claim 1 , wherein the elevated molding and/or the at least one additional elevation has a proportion of a fibrous material.

19. The implant as claimed in claim, having a proportion of the fibrous material of between 2 and 80% by weight based on the overall weight of the implant.

20. A surgical set for reconstructing meniscus defects or partial meniscus defects, comprising at least one implant as claimed in claim 1 .

21. An implant for reconstructing meniscus defects or partial meniscus defects comprising an elevated molding with a femoral condylar contact area, a tibial condylar contact area and an articular capsule contact area, wherein the elevated molding has a wedge-shaped form and at least one additional elevation is formed on an outer area of the elevated molding and wherein the elevated molding and the at least one additional elevation are formed in one piece, and wherein the elevated molding is of an open-pore form only in a region of its articular capsule contact area, wherein the elevated molding has a closed pore form in the femoral condylar contact area and/or tibial condylar contact area.

Assignees

• Jansson Volkmar
• Mueller Peter
• Aesculap Ag

Inventors

• Jansson Volkmar
• Mueller Peter

Classifications

• A61F2002/3092

  having an open-celled or open-pored structure · CPC title

• A61F2002/30014

  differing in elasticity, stiffness or compressibility · CPC title

• A61F2230/0023

  triangular · CPC title

• A61F2/30965

  Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping · CPC title

• A61F2002/30156

  triangular · CPC title