Apparatus for the regeneration of human tissue

• US 20050154458A1
• Filed: 09/20/2004
• Published: 07/14/2005
• Est. Priority Date: 09/22/2003
• Status: Abandoned Application

• Current Assignee: Matthias Steinwachs
• Original Assignee: Howmedica International S. De R.L. (Stryker Corporation)
• Inventors: Steinwachs, Matthias
• Application Number:
  US10/945,207
• Publication Number:
  US 20050154458A1
• Time in Patent Office: Days
• US Class Current: 623/11.110
• CPC Class Codes: A61K 2035/124 the cells being hematopoietic, bone marrow derived or blood cells
• CPC Class Codes: A61L 27/3834 Cells able to produce different cell types, e.g. hematopoietic stem cells, mesenchymal stem cells, marrow stromal cells, embryonic stem cells
• CPC Class Codes: A61L 27/3843 Connective tissue

Abstract

An apparatus for use in the regeneration of structured human tissue has a pair of opposed surfaces comprising a bio material or a synthetic polymer material. Each surface carries an active bio layer which can interact with stem cells from bone marrow. The opposed surfaces can be moved from an open position where they are spaced apart to a closed position in which they are closer together to form a multi-layer or sandwich construction.

Claims

1. An apparatus for use in the regeneration of structured human tissue comprising a pair of opposed surfaces of bio material or a synthetic polymer material, each surface carrying an active bio layer which can interact with stem cells from bone marrow, and which can be moved from an open position where the opposed surfaces are spaced apart to a closed position in which the opposed surfaces are closer together to form a multi-layer or sandwich construction.

2. The apparatus as set forth in claim 1 wherein said opposed surfaces are provided on a folded sheet.

3. The apparatus as set forth in claim 1 wherein said opposed surfaces are provided on the inner surfaces of a tube.

4. The apparatus as set forth in claim 1 further comprising means for holding the surfaces in the closed position.

5. The apparatus as set forth in claim 1 further comprising means for holding the surfaces in position on a bone, or other human organ.

6. The apparatus as set forth in claim 5 wherein the human organ is a meniscus, disc, tendon or ligament.

7. The apparatus as set forth in claim 1 wherein the bio material is of Collagen I type and the active bio layer is Hyaluronic acid.

8. The apparatus as set forth in claim 1 wherein the bio material is a combination of a natural and synthetic polymer with an active bio layer.

9. The apparatus as set forth in claim 1 wherein the synthetic polymer material is selected from the group consisting of polyvinyl alcohol, acetate hydrogel, polycaprolactone, polyurethane, alpha and beta hydroxy acids or esters and combinations thereof, or other suitable porous or biodegradable polymers that can be fabricated in the form of a scaffold or matrix to support the active bio layer.

10. A method for forming a tissue scaffold comprising:

providing a generally flat sheet of biocompatible material;

applying a material containing hyaluronic acid to the sheet;

applying stem cells to the hyaluronic acid coated sheet;

folding the coated sheet to form a closed structure;

holding the closed structure in the closed position by using of tying elements; and

attaching the closed sheet to tissue.

11. The method as set forth in claim 10 wherein the sheet is made from type I Collagen.

12. The method as set forth in claim 11 wherein the sheet is made of a member selected from the group consisting of polyvinyl alcohol, acetate hydrogel, polycaprolactone, polyurethane, alpha and beta hydroxy acids or esters and combinations thereof, or other suitable porous or biodegradable polymers that can be fabricated in the form of a scaffold or matrix to support the hyaluronic acid.