摘要
目的 研制一种对松质骨创面出血有良好止血作用，并具有生物降解性的新型骨止血胶。方法健康日本大耳白兔20只，雌雄不限，体重3．0～4．5kg。分别于两侧髂骨外板以直径5mm的钻头钻成深度为4mm松质骨创面，每侧2个，相距约1．5～2．0cm。左侧2个创面分别使用聚乳酸（polylatic acid，PLA）骨止血胶（A组）、骨蜡（B组）填充止血，右侧1个创面使用PLA骨止血胶（A组）填充止血，另一创面不作任何处理为空白对照组（C组）。分别记录各组1min和10min创面止血情况；术后2、4、8和12周随机抽取动物取材，每次5只，大体及组织学观察各组在骨创面愈合方面的差异。结果①止血作用：A组1min创面出血基本停止，10min创面出血完全停止，止血胶与骨创面黏附牢固，未见脱落。B组1min创面出血完全停止，10min创面均未见出血，骨蜡与创面黏附牢固、无脱落。C组10min创面无1例停止渗血，随观察时间延长出血量增多。②生物降解作用：A组，术后2周创面大小无明显变化；4、8周创面逐渐变浅、缩小，创面内残留止血胶体积逐渐减少；12周，创面内止血胶完全降解、吸收，创面修复完成。B组，创面内骨蜡填充物始终存在，创面无愈合迹象；12周，所有创面无1例骨性愈合，骨蜡无吸收。c组，随时间推移创面逐渐为纤维瘢痕组织所填充、覆盖；12周，创面基本骨性愈合。结论PLA骨止血胶止血迅速、有效，能完全降解、吸收，可作为良好的松质骨创面止血胶，进一步研究可望成为骨蜡替代产品。
Objective To prepare a self-made compound, hemostatic jelly with polylactic acid（PLA）, which has the hemostatic and absorbable effect on injured cancellous bone. Methods Two bone defects of S mm in diameter and 4 mm in depth were subjected on 20 health rabbits by drilling through their either outside plate of the iliac, and were filled with hemostatic jelly（group A）, bone wax（group B） and blank（group C） respectively. Hemostasis were observed and recorded after 1 and 10 minutes. Five specimens were harvested at 2, 4, 8 and 12 weeks postoperatively for histological observation. Results （D Hemostatic effect.. Bleeding of injured spongy bone stopped within 10 minutes after the treatment of hemostatic jelly and bone wax, but bleeding of balnk did not stop. Hemostatic jelly and bone wax adhered to bone defects firmly within 10 minutes was after the treatment. ② Absorbable effect ;Hemostatic jelly and bone defects have not changed visibly in the first 2 weeks. With histological observation 4 to 8 weeks after the operation, hemastatic jelly was absorbed gradually and replaced by osteogenous tissue. It was absorbed completely after 8 to 12 weeks. Bone wax was not absorbed after 12 weeks, no new bone tissue was observed at bone wax area. The blank was replaced by connective tissue and osteogenous tissue partially after 12 weeks. Conclusion The compound hemostatic jelly manifests both hemostatic and absorbable effects on injured cancellous bone and may substitute for bone wax in clinical application.
出处
《中国修复重建外科杂志》
CAS
CSCD
北大核心
2006年第5期511-514,共4页
Chinese Journal of Reparative and Reconstructive Surgery
关键词
聚乳酸
可吸收
止血
骨蜡
Polylactic acid Absorption Hemostasis Bone wax
