应用化学 ›› 1997, Vol. 0 ›› Issue (2): 102-104.

• 研究论文 • 上一篇    下一篇

聚乳酸眼科植入材料的制备及其降解性能

卓仁禧1, 尹超1, 吴颖楠1, 祝磊2, 曾水清2   

  1. 1. 武汉大学化学系, 武汉 430072;
    2. 同济医科大学附属协和医院, 武汉
  • 收稿日期:1996-08-18 修回日期:1997-01-17 出版日期:1997-04-10 发布日期:1997-04-10
  • 基金资助:
    国家自然科学基金

Synthesis and Degradation Behavior of Poly(DL-Lactide)for Ophthalmic Application

Zhuo Renxi1, Yin Chao1, Wu Yinnan1, Zhu Lei2, Zhen Shuiqing2   

  1. 1. Department of Chemistry, Wuhan University, Wuhan 430072;
    2. Xiehe Hospital, Tongji Medical University, Wuhan
  • Received:1996-08-18 Revised:1997-01-17 Published:1997-04-10 Online:1997-04-10

摘要: 乳酸(PLA)是一种有良好生物相容性和生物可降解的高分子材料, 主要应用于医用缝合线[ 1], 骨修复材料[ 2], 药物控制释放材料[ 3], 人工骨[ 4]及人造皮肤[ 5]等.视网膜脱离是严重致盲性的眼病, 通常是通过手术, 在眼巩膜表面植入填充物, 并结合激光、冷冻等医学手段使裂孔愈合. 目前, 这种填充物通常采用硅橡胶或硅胶海绵制成, 由于这两种物质是生物不可降解材料, 常引起不同程度的异物反应, 如果利用聚乳酸的生物可降解性, 把它作为填充材料, 可解决这个问题, 由于聚乳酸具有良好的生物相容性, 在眼部作为控制释放材料的应用已有报道[ 6]

关键词: 聚乳酸, 制备, 生物可降解性, 眼科植入材料

Abstract: The application of poly(DL-lactide)(PLA)as a biodegradable ophthalmic implant has been studied. The PLA was synthesized from DL-lactide by bulk ring opening polymerization initiated by stannous 2-ethylhexanoate. Both the pressure of polymerization system and the mole ratio of monomer to initiator showed a marked influence on the relative molecular weights of PLA. The in vitro and in vivo degradation of PLA has been investigated in 0.2 mol/L Na2HPO4 NaH2PO4 solution in rabbits eyes.

Key words: polylactide, synthesis, biodegradation, ophthalmic implant