Medical collagen plaster biological dressing and preparation method thereof

The invention relates to the technical field of biomedical materials, in particular to medical collagen plaster biological dressing and a preparation method thereof. The medical collagen plaster biological dressing provided by the invention consists of a biological matrix liquid and a medical non-woven fabric, wherein the biological matrix liquid mainly comprises collagen, chondroitin sulfate, chitosan and polylactic acid; the collagen has the effect of promoting wound repair; the chondroitin sulfate serves as a main component of a extracellular matrix, and can promote cell proliferation in the wound healing process and prevent wound adhesion; the chitosan is amino-containing glucan and has the effects of inhibiting bacteria, stopping bleeding and promoting healing; the polylactic acid has the effects of stopping bleeding and preventing adhesion. 本发明涉及生物医学材料技术领域，具体涉及种医用胶原贴生物敷料及其制备方法，本发明的医用胶原贴生物敷料，由生物基质液和医用无纺布组成，其中生物基质液主要由胶原蛋白、硫酸软骨素、壳聚糖和聚乳酸组成，其中胶原蛋白具有促进创面修复的作用，硫酸软骨素作为细胞外基质主要成分，在创面愈合过程中促进细胞的增殖，促进创面愈合，防止创面粘连，壳聚糖