IP Library Granted Patent US 10,653,815
Granted Patent B2
US 10,653,815 · App. 15/618,341 · Granted May 19, 2020

Mesh compositions and methods of production

Inventors: Hui Xu (Plainsboro, NJ); Sean Collins (Valley Cottage, NY); Li Ting Huang (Branchburg, NJ); Hua Wan (Princeton, NJ); Yi Chen (Lawrenceville, NJ)
Assignee: LifeCell Corporation
A61L27/24A61L27/3604A61L27/3683A61L27/54A61L27/56A61L2300/404A61L2300/41A61L2430/34
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Quick Facts
Patent No.
US 10,653,815
App. No.
15/618,341
Granted
May 19, 2020
Kind
B2
Abstract

Methods of forming a composition for treatment, compositions for treatment, and methods of treatment with the compositions are provided. The methods can include coating a synthetic material substrate with a biologic material. A portion of the biologic material can be acid-swelled.

Claims (25)

1. A method of producing a surgical material, comprising:

providing a synthetic material substrate;

selecting a collagen-containing tissue matrix;

creating a slurry with the collagen-containing tissue matrix, wherein creating the slurry comprises:

subjecting a portion of the collagen-containing tissue matrix to an acid swelling process to produce an acid-swelled tissue matrix, resulting in (i) the acid-swelled tissue matrix including the portion of the collagen-containing tissue matrix and (ii) a remainder portion of the collagen-containing tissue matrix; and

mixing the acid-swelled tissue matrix with the remainder portion of the collagen-containing tissue matrix to produce a slurry having between 5% and 35% by volume of the acid-swelled tissue matrix; and

embedding the synthetic material substrate in the slurry.

2. The method of claim 1 , wherein the slurry has between 5% and 25% by volume of the acid-swelled tissue matrix.

3. The method of claim 1 , wherein the slurry has between 5% and 10% by volume of the acid-swelled tissue matrix.

4. The method of claim 1 , wherein the acid swelling process comprises suspending the portion of the collagen-containing tissue matrix in acid and incubating the portion of the collagen-containing tissue matrix in the acid until swelling occurs.

5. The method of claim 1 , comprising performing a decellularization process for the collagen-containing tissue matrix.

6. The method of claim 1 , comprising resuspending the slurry in a buffer.

7. The method of claim 1 , comprising incorporating an antimicrobial compound into the surgical material.

8. The method of claim 1 , comprising incorporating an anti-inflammatory compound into the surgical material.

9. The method of claim 1 , wherein the synthetic material substrate comprises at least one of a porous foam, a planar mesh, a monofilament woven material, a multifilament woven material, multi-leveled layers, or multi-directional layers.

10. The method of claim 1 , wherein a tensile strength of the synthetic material substrate is greater than a tensile strength of the collagen-containing tissue matrix.

11. The method of claim 1 , wherein the synthetic material substrate comprises textured surfaces.

12. The method of claim 1 , wherein the collagen-containing tissue matrix comprises an acellular tissue matrix.

13. The method of claim 1 , comprising processing the collagen-containing tissue matrix to produce a group of collagen-containing tissue matrix fragments, at least a portion of the collagen-containing tissue matrix fragments including frayed ends.

14. The method of claim 1 , comprising pouring a portion of the slurry into a mold to cover a bottom of the mold with the slurry, positioning the synthetic material substrate coated with the slurry into the mold on the slurry, pouring the slurry over the synthetic material substrate positioned in the mold to cover the synthetic material substrate, and freeze drying the surgical material to combine the collagen-containing tissue matrix and the synthetic material substrate.

15. The method of claim 1 , comprising freeze drying the synthetic material substrate and at least the portion of the slurry to form the surgical material, wherein freeze drying the synthetic material substrate and at least the portion of the slurry produces a smooth layer or skin on an outer surface of the surgical material.

16. The method of claim 15 , further comprising compressing the portion of the slurry and the synthetic material substrate after freeze drying.

17. The method of claim 1 , wherein embedding the synthetic material substrate in the slurry comprises mechanically forcing, moving or rubbing at least a portion of the slurry into the synthetic material substrate.

18. The method of claim 17 , wherein mechanically forcing, moving or rubbing at least the portion of the slurry into the synthetic material substrate forces the portion of the slurry into openings in an outer surface of the synthetic material substrate.

19. The method of claim 16 , wherein compressing the portion of the slurry and the synthetic material substrate embeds the slurry into the synthetic material substrate.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 3, 2017
From: XU, HUI; COLLINS, SEAN; HUANG, LI TING; WAN, HUA; CHEN, YI
To: LIFECELL CORPORATION
Reel/Frame 042882/0201 →