Porous material for use as implant, bone replacement and in general as material
First Claim
1. A porous implant body formed by application of a negative pressure resulting in said implant body comprising:
- an outer shell having a continuous surface the entirety of which is penetrated by pores having a predetermined diameter, and further including an inner structure defining a continuously interconnected cavity system made of hollow sphere-shaped cavities, wherein the implant body is configured such that each of the pores of the outer shell is directly connected to one of the cavities of the cavity system and each such connected pore has a diameter smaller than a maximum diameter of the directly connected cavity of the cavity system.
3 Assignments
0 Petitions
Accused Products
Abstract
Implants and methods for producing same are described, the implants featuring an adjustable porous shell, the inside being continuously interconnectingly adjustably porous and which can be sintered net shaped; these implants exhibit a high compression stability and show, when being combined with filler materials with or without active agents, different chemical, physical-mechanical, biomechanical or also pharmacological properties. The essential features of the manufacturing process are described in FIG. (1) and comprise expandable shaping elements, deformable elastic tools, the application of defined negative pressures, temperatures during defined application periods in combination with combined materials, which can be separated from each other physically, chemically or mechanically and removed.
-
Citations
31 Claims
-
1. A porous implant body formed by application of a negative pressure resulting in said implant body comprising:
- an outer shell having a continuous surface the entirety of which is penetrated by pores having a predetermined diameter, and further including an inner structure defining a continuously interconnected cavity system made of hollow sphere-shaped cavities, wherein the implant body is configured such that each of the pores of the outer shell is directly connected to one of the cavities of the cavity system and each such connected pore has a diameter smaller than a maximum diameter of the directly connected cavity of the cavity system.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
18. A porous implant body having an outer shell having a continuous surface penetrated by pores having a predetermined diameter, and further including an inner structure comprising a conglomerate of cavities defined by sphere-shaped shells, said cavities forming a continuously interconnected cavity system made of hollow sphere-shaped cavities, wherein the implant body is configured such that each of the pores of the outer shell is directly connected to one of the cavities of the cavity system and each such connected pore has a diameter smaller than a maximum diameter of the directly connected cavity of the cavity system, manufactured by the process comprising:
-
providing a tool having an inner cavity; placing shaping elements into the inner cavity of the tool; adding a liquid mass to the inner cavity of the tool, wherein the liquid mass encompasses the shaping elements and defines the inner structure and the outer shell; subjecting the inner cavity of the tool to a vacuum; solidifying the mass by cooling; removing the shaping elements; and dehydrating, drying and sintering the mass.
-
-
19. A porous implant body formed by the application of a negative pressure resulting in said implant body comprising:
- an outer shell having a surface the entirety of which is interrupted by pores across the entire surface, and further including an inner structure defining a continuously interconnected cavity system made of hollow sphere-shaped cavities, wherein the implant body is configured such that each of the pores of the outer shell is directly connected to one of the cavities of the cavity system and each such connected pore has a diameter smaller than a maximum diameter of the directly connected cavity of the cavity system.
-
20. A method of producing a porous implant body, the method comprising:
-
providing a tool having an inner cavity; placing shaping elements into the inner cavity of the tool; adding a liquid mass to the inner cavity of the tool, the liquid mass encompasses the shaping elements and defines an inner structure and an outer shell of the porous implant body; subjecting the inner cavity of the tool to a vacuum; solidifying the mass by cooling and thereby solidifying the inner structure and the outer shell of the porous implant body; removing the shaping elements to create an outer shell having a continuous surface the entirety of which is penetrated by pores having a predetermined diameter, and further including an inner structure defining an interconnected conglomerate of sphere-shaped cavities within the inner structure and forming pores that interrupt the continuous surface of the outer shell wherein each of the pores in the outer shell is directly connected to one of the cavities of the cavity system and each such connected pore has a diameter smaller than a maximum diameter of the directly connected cavity of the cavity system; dehydrating the outer shell and the inner structure; drying the outer shell and the inner structure; and sintering the outer shell and the inner structure. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
Specification