Composite and its use

• US 9,144,630 B2
• Filed: 01/29/2010
• Issued: 09/29/2015
• Est. Priority Date: 01/30/2009
• Status: Active Grant

• Current Assignee: Skulle Implants Oy
• Original Assignee: Skulle Implants Oy
• Inventors: Vallittu, Pekka, Aitasalo, Kalle, Peltola, Matti, Lassila, Lippo, Tuusa, Sari
• Primary Examiner(s): Snow, Bruce E
• Assistant Examiner(s): HOBAN, MELISSA A
• Application Number:
  US13/147,085
• Publication Number:
  US 20120089237A1
• Time in Patent Office: 2,069 Days
• Field of Search: 623/17.18, 623/17.19
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2803 for mandibular reconstruction temporo-mandibular joints A61F2/3099; bone plates for the jaw A61B17/8071
• CPC Class Codes: A61F 2/2875 Skull or cranium A61F2/2803 and A61F2/3099 take precedence
• CPC Class Codes: A61F 2/3094 Designing or manufacturing processes
• CPC Class Codes: A61F 2/30965 Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
• CPC Class Codes: A61F 2002/30011 differing in porosity
• CPC Class Codes: A61F 2002/30032 differing in absorbability or resorbability, i.e. in absorption or resorption time
• CPC Class Codes: A61F 2002/3092 having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/30971 Laminates, i.e. layered products
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: A61F 2250/0023 differing in porosity
• CPC Class Codes: A61F 2250/003 differing in adsorbability or resorbability, i.e. in adsorption or resorption time
• CPC Class Codes: A61L 27/446 with other specific inorganic fillers other than those covered by A61L27/443 or A61L27/46
• CPC Class Codes: A61L 27/48 with macromolecular fillers
• CPC Class Codes: A61L 27/50 Materials characterised by their function or physical properties , e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
• CPC Class Codes: A61L 27/56 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 31/128 containing other specific inorganic fillers not covered by A61L31/126 or A61L31/127
• CPC Class Codes: A61L 31/129 containing macromolecular fillers
• CPC Class Codes: A61L 31/146 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 31/18 Materials at least partially X-ray or laser opaque
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree

Abstract

The present invention relates to a composite comprising a structural part, a porous part, and at least two interconnecting parts arranged at a distance from each other and extending from the structural part to the porous part, thus connecting them to each other. The implant is characterized in that each interconnecting part is in the form of a band having a length, a width and a height, the width and the height both being independently at most 20% of the length of the band, and in that at least one of the interconnecting parts is at least partially embedded into the structural and porous parts.

Claims

1. A composite comprising

a structural part,

a porous part,

wherein said structural part and said porous part both comprise fibres and a matrix, such that an amount of fibres per volume of the structural part is larger than an amount of fibres per volume of the porous part, and

at least two reinforcing parts arranged at a distance from each other, said at least two reinforcing parts separate from and unconnected to one another, said at least two reinforcing parts extending from the structural part to the porous part, thus connecting said structural part to said porous part,

wherein

each reinforcing part is in the form of a band having a length, a width and a height, the width and the height both being independently at most 20% of the length of the band,

at least one of the reinforcing parts is partially embedded into the structural and porous parts, and

wherein the reinforcing parts each comprise a polymeric matrix.

2. A composite according to claim 1, wherein the width and the height of each reinforcing part is at most 15% of its length.

3. A composite according to claim 1, wherein the fibres of the structural part are in the form of a woven fabric or a unidirectional fibre roving.

4. A composite according to claim 1, wherein the fibres of the porous part are in the form that is selected from the group consisting of chopped, randomly oriented fibres, woven fabric and a three-dimensional fibre fabric.

5. A composite according to claim 1, wherein the reinforcing parts further comprise fillers.

6. A composite according to claim 1, further comprising modifier particles.

7. A composite according to claim 6, wherein the modifier particles improve the osteoconductivity of the composite.

8. A composite according to claim 6, wherein the modifier particles are selected from the group consisting of bioactive ceramics, bioactive glass, silica gel, titanium gel, silica xerogel, silica aerogel, natrium silica glass, titanium gels, bioactive glass ionomer, hydroxyapatite, Ca/P-doped silica gel and mixtures thereof.

9. A composite according to claim 1, wherein the structural part, the porous part and the reinforcing parts each comprise a matrix material, and wherein the matrix materials of the structural part, the porous part and the reinforcing parts consist of same components in different amounts.

10. A composite according to claim 1, further comprising finished dental implants arranged on the reinforcing parts.

12. An implant comprising a composite according to claim 1.

13. An implant according to claim 12, further comprising stem cells.

11. A composite comprising

a structural part,

a porous part,

wherein said structural part and said porous part both comprise fibres and a matrix, such that an amount of matrix per volume of the structural part is larger than an amount of matrix per volume of the porous part, and

at least two reinforcing parts arranged at a distance from each other, said at least two reinforcing parts separate from and unconnected to one another, said at least two reinforcing parts extending from the structural part to the porous part, thus connecting said structural part to said porous part,

wherein

each reinforcing part is in the form of a band having a length, a width and a height, the width and the height both being independently at most 20% of the length of the band,

at least one of the reinforcing parts is partially embedded into the structural and porous parts, and

wherein the reinforcing parts each comprise a polymeric matrix.