A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
A61L 27/00 (2006.01) A61L 15/64 (2006.01) A61L 27/44 (2006.01) A61F 2/00 (2006.01) A61F 2/02 (2006.01)
Patent
CA 2132368
11 ABSTRACT WOUND IMPLANT MATERIALS Wound implant materials are described comprising a plurality of bioabsorbable microspheres bound together by a bioabsorbable matrix, such as in a freeze-dried collagen matrix. The microspheres preferably comprise over 30% of the volume of the material, and preferably have diameters of 10 µm to 1500 µm. The microspheres and/or the matrix preferably comprise a polylactic/polyglycolic copolymer, collagen, cross-linked collagen, hyaluronic acid, cross- linked hyaluronic acid, an alginate or a cellulose derivative. The resulting implants are stronger and more slowly resorbed than conventional collagen sponge implants. Better control over the porosity of the implant is achieved.
Arnold Peter Stuart
Johnson & Johnson Medical Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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