Composite material
First Claim
1. A composite material, made by a process comprising providing bacterial cellulose which includes a plurality of pores, immersing said bacterial cellulose in a solution containing a calcium source, and immersing said bacterial cellulose in a separate solution containing a source of phosphate, thereby forming said composite material which consists essentially of bacterial cellulose and calcium deficient hydroxyapatite, said calcium deficient hydroxyapatite being in the form of crystals disposed in said plurality of pores.
3 Assignments
0 Petitions
Accused Products
Abstract
A composite biocompatible hydrogel material includes a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young'"'"'s modulus of at least 10 GPa. A calcium comprising salt is disposed in at least some of the pores. The porous polymer matrix can comprise cellulose, including bacterial cellulose. The composite can be used as a bone graft material. A method of tissue repair within the body of animals includes the steps of providing a composite biocompatible hydrogel material including a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young'"'"'s modulus of at least 10 GPa, and inserting the hydrogel material into cartilage or bone tissue of an animal, wherein the hydrogel material supports cell colonization in vitro for autologous cell seeding.
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Citations
9 Claims
- 1. A composite material, made by a process comprising providing bacterial cellulose which includes a plurality of pores, immersing said bacterial cellulose in a solution containing a calcium source, and immersing said bacterial cellulose in a separate solution containing a source of phosphate, thereby forming said composite material which consists essentially of bacterial cellulose and calcium deficient hydroxyapatite, said calcium deficient hydroxyapatite being in the form of crystals disposed in said plurality of pores.
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2. A composite material, made by a process comprising providing bacterial cellulose which includes a plurality of pores, immersing said bacterial cellulose in a solution containing a calcium source, and immersing said bacterial cellulose in a separate solution containing a source of phosphate, thereby forming said composite material which consists essentially of bacterial cellulose, calcium deficient hydroxyapatite, and at least one of bone morphogenetic proteins (BMP'"'"'s) or chondrocytes, said calcium deficient hydroxyapatite being in the form of crystals disposed in said plurality of pores.
Specification