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发明公开
CN101768345A 一种聚乳酸降解膜 无效 - 撤回

一种聚乳酸降解膜
摘要：
本发明涉及一种降解时间可控的聚乳酸降解膜，属于医疗器械技术领域，以重量百分比计：含有1％～35％的增塑剂和65％～99％的聚乳酸、聚乳酸-乙醇酸共聚物、聚乙醇酸-ε-己内酯共聚物、聚乳酸-ε-己内酯共聚物或聚乳酸-乙醇酸-ε-己内酯共聚物；所述增塑剂为柠檬酸酯醚、葡萄糖单酯醚、脂肪酸酯醚、聚乙二醇400～2000、低分子量聚乳酸、丙三醇、三醋酸甘油酯和乙二醇丁醚醋酸酯中的一种以上。本发明所制得的聚乳酸降解膜强度好，降解时间可控，可以用于人体，例如：外科手术防粘连膜、消化道支架、胆道支架、前列腺支架、血管内支架、子宫内支架及医疗器械配件，可根据临床需要，制备所需的可控聚乳酸降解膜。
摘要（英）：

The invention relates to a polylactic acid degradable film with controllable degradable time, belonging to the technical field of medical appliances. The polylactic acid degradable film comprises the following components in percentage by weight: 1%-35% of plasticizer and 65%-99% of polylactic acid, polylactic acid-glycollic acid copolymer, polyglycollic acid-epsilon-caprolactone copolymer, polylactic acid-epsilon-caprolactone copolymer or polylactic acid-glycollic acid-epsilon-caprolactone copolymer, wherein the plasticizer is more than one of citrate ether, glucose monoester ether, fatty acid ester ether, polyethylene glycol 400-2,000, low-molecular weight polylactic acid, glycerol, glycerol triacetate and ethylene glycol monobutyl ether acetate. The manufactured polylactic acid degradable film of the invention has good strength and controllable degradable time, can be used for a human body, such as an anti-adhesion film in a surgical operation, a digestive stent, a biliary stent, a prostate stent, an endovascular stent, an intrauterine stent and a medical appliance fitting, and can be used for preparing the required controllable polylactic acid degradable film according to the clinical requirements.

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