The invention discloses a double-layer membranous
tissue repair material and a preparation method thereof, wherein, a
cell-free membranous biological derivative material is used as a
surface layer, and a
fibroblast is compounded in the interior of a biological support material to form a substrate, and then the
surface layer and the substrate are combined in a chimeric way to form the double-layer membranous
tissue repair material; a compact
surface layer structure can effectively reduce the loss of water, electrolytes and
protein from surface of wound, avoid the invading and the
reproduction of
bacteria to the impaired surface of wound as well as prevent the infection of the surface of wound, thus being beneficial to epitheliosis and epithelial growth; the substrate can directly repair the surface of wound, promote the ingrowth of cells around the surface of wound and the
angiogenesis, induce the differentiation from stem cells to
skin cells and quicken
wound healing; compared with the existing products, the
tissue repair material has the advantages of being capable of promoting the regeneration of
skin, improving the elasticity, the flexibility and the
mechanical abrasion resistance of
skin after the surface of wound is healed, reducing
hyperplasia of
scar tissues, controlling the
contracture, having excellent
biocompatibility, increasing the success rate of transplant and improving the quality of healing; the invention has wide
material resources and simple production method; the double-layer membranous tissue
repair material prepared is applicable to the
clinical treatment of skin defect caused by
inflammation, ulcer, thermal burns, iatrogenicity and the like.