Biomatrix for soft tissue regeneration using mesenchymal stem cells
First Claim
1. An implant for repair of a tissue defect in an animal in need thereof, said implant comprising:
- a contracted gel matrix formed in a planar mat having a length and a width forming a broad surface and a thickness relatively smaller than said width and length; and
mesenchymal stem cells within said contracted gel matrix, said cells having contracted said gel matrix in tension in a given direction.
2 Assignments
0 Petitions
Accused Products
Abstract
An implant for repair of a tissue defect comprises a plurality of physiologically compatible load-bearing sutures for securing under tension tissue adjacent to the defect to be repaired, the sutures for supporting a tissue reparative cell mass in the defect and a tissue reparative cell mass supported thereby. The sutures have a central portion encapsulated in a cell containing matrix which is contracted under a tensile load by the cells thereof and formed into a mat sheet during the contraction. Spring metal wires hold the sutures in tension during the contraction. The matrix is a collagen gel or other material which the cells contract, the cells comprising human mesenchymal stem cells. The mat sheet is then rolled into a spiral roll with the sutures extending from opposite roll ends to form the desired implant. Different embodiments are disclosed.
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Citations
21 Claims
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1. An implant for repair of a tissue defect in an animal in need thereof, said implant comprising:
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a contracted gel matrix formed in a planar mat having a length and a width forming a broad surface and a thickness relatively smaller than said width and length; and
mesenchymal stem cells within said contracted gel matrix, said cells having contracted said gel matrix in tension in a given direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implant for repair of a tissue defect in an animal in need thereof, said implant comprising:
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a contracted gel matrix formed in a mat sheet;
mesenchymal stem cells (MSCs) within said contracted gel matrix, said cells having contracted said gel matrix in tension in a given direction; and
a plurality of support members extending in the given direction through and embedded within the matrix, each member having opposing free ends extending beyond the contracted matrix. - View Dependent Claims (12, 13, 14)
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15. An implant for repair of a tissue defect in an animal in need thereof, said implant comprising:
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a contracted gel matrix formed as a flat mat; and
a plurality of load bearing support members lying encapsulated in the gel matrix, the support members having opposite end portions extending from the matrix, the support members extending in a given direction; and
mesenchymal stem cells within said contracted gel matrix, said matrix having been contracted by said cells in tension in said given direction. - View Dependent Claims (16, 17)
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18. An implant for repair of a tissue defect in an animal in need thereof, said implant comprising:
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a contracted gel matrix formed as a flat mat and rolled against itself into a spiral;
at least one load bearing support member lying encapsulated in the gel matrix, the support member comprising a discrete support filament having opposite end portions extending from the matrix, the support filament extending in a given direction; and
mesenchymal stem cells within said contracted gel matrix, said matrix having been contracted by said cells in tension in said given direction. - View Dependent Claims (19, 20, 21)
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Specification