Endoprosthetic component

Patent metadata

Field	Value
Publication number	US-10130734-B2
Application number	US-201314648009-A
Country	US
Kind code	B2
Filing date	Nov 25, 2013
Priority date	Nov 26, 2012
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

An endoprosthetic component which is set up in the implanted state to penetrate in a controlled manner into adjoining bone material.

First claim

It is claimed:

1. An endoprosthetic component comprising:
a first outer region; and
a second inner region;
wherein the material of the first outer region has a greater 4-point bending strength than the material of the second inner region,
wherein the second inner region has pores with pore sizes between 100 and 1000 μm; and
wherein top and bottom surfaces of the first outer region extend beyond respective end surfaces of the second inner region.

2. The endoprosthetic component according to claim 1 , wherein the first outer region is designed in such a way as to penetrate so deeply into the adjacent bone material that at least a portion of the surface of the second inner region is in contact with the bone material so that a force transmission between the bone material and the surface of the second inner region occurs.

3. The endoprosthetic component according to claim 1 , wherein the first outer region is movably connected to the second region.

4. The endoprosthetic component according to claim 1 , wherein the first outer region is substantially non-porous.

5. The endoprosthetic component according to claim 1 , wherein the second inner region is porous, wherein the porosity preferably lies between 75 and 85 vol.-%.

6. The endoprosthetic component according to claim 1 , wherein the second inner region has pores with a pore size of 1000 μm.

7. The endoprosthetic component according to claim 1 , wherein the second inner region has pores with a pore size of 100 μm.

8. The endoprosthetic component according to claim 1 , wherein both the first outer region and the second inner region comprises a ceramic.

9. The endoprosthetic component according to claim 1 , wherein the at least one of the first outer region and the second inner region further comprises a bioactive substance.

10. The endoprosthetic component according to claim 9 , wherein the bioactive substances are admixed with material from which at least one of the first outer region and the second inner region is manufactured, or wherein the bioactive substance is contained in the material in layers or sections.

11. The endoprosthetic component according to claim 9 , wherein at least one of the first outer region and the second inner region is coated at least in at least a section thereof with the bioactive substance.

12. The endoprosthetic component according to claim 9 , wherein the bioactive substances are disposed in the pores of the second inner region.

13. The endoprosthetic component according to claim 9 , wherein the bioactive substance comprises at least one member selected from the group consisting of hydroxyapatite, tricalcium phosphate and bioglass.

14. The endoprosthetic component according to claim 1 , wherein the component is a vertebral column implant.

15. The endoprosthetic component according to claim 4 , wherein the first outer region has a porosity of less than 5 vol.-%.

16. The endoprosthetic component according to claim 1 , wherein the second inner region has pores with pore sizes between 400 and 600 μm.

17. The endoprosthetic component according to claim 1 , wherein the oxide ceramic is zirconium oxide.

18. The endoprosthetic component according to claim 1 , wherein the oxide ceramic comprises aluminum oxide.

19. The endoprosthetic component according to claim 1 , wherein the oxide ceramic comprises at least one member selected from the group consisting of aluminum oxide and zirconium oxide.

20. The endoprosthetic component according to claim 1 , wherein at least one of the first outer region and the second region comprises zirconium oxide.

21. The endoprosthetic component according to claim 1 , wherein at least one of the first outer region and the second inner region comprises a ceramic selected from the group consisting of a ZTA ceramic, a tetragonally stabilized zirconium oxide, a partially stabilized zirconium oxide and a ZTA ceramic.

22. The endoprosthetic component according to claim 1 , wherein at least one of the first outer region and the second inner region comprises a ceramic selected from the group consisting of an yttrium stabilized zirconium oxide, a cerium stabilized zirconium oxide and a gadolinium-stabilized zirconium oxide.

23. The endoprosthetic component according to claim 9 , wherein the bioactive substance comprises a bioglass.

24. The endoprosthetic component according to claim 23 , wherein the bioglass comprises at least one member selected from the group consisting of SiO 2 , CaO, Na 2 O and P 2 O 5 .

25. The endoprosthetic component according to claim 23 , wherein the point bending strength is 500-2000 Mpa.

Assignees

• Ceram Gmbh

Inventors

• Kelnberger Alfons
• Wecker Heinrich
• Ziermann Frank
• Juszczyk Mateusz

Classifications

• A61F2002/30028

  differing in tissue ingrowth capacity, e.g. made from both ingrowth-promoting and ingrowth-preventing parts · CPC title

• A61F2310/00023

  Titanium or titanium-based alloys, e.g. Ti-Ni alloys · CPC title

• A61F2002/3084

  Nanostructures · CPC title

• A61L27/54

  Biologically active materials, e.g. therapeutic substances {(A61L27/227 takes precedence)} · CPC title

• A61F2002/3092

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