摘要
目的探讨一种X线下可显影新型高分子尿道支架在尿道狭窄治疗中的作用。方法在高分子材料聚乳酸(PLA)中掺入硫酸钡(BaSO4)制成螺旋形尿道支架。结果这种高分子尿道支架可在X线下清晰显影,并且在支架长期植入过程中持续保持相同程度的显影效果。支架植入过程中,无炎症反应。支架弹性和力学强度无改变。结论由于高分子尿道支架的可显影性,便于进行术后检查,判断支架的位置、支架降解破碎的程度。同时不改变聚乳酸支架良好的生物相容性和力学性能。
Objective To investigate the display effect under X-ray of a new polymer urethral stent used in treatment of urethral stricture. Methods The spiral urethral stent is made of Poly （l-lactide） （PLLA）, adding barium sulphate （BaSO4） to certain content. Results The polymer urethral stent can be displayed precisely under X-ray. During the treatment, there were not any inflammations found. The mechanical properties of the stent are the same as those of the PLLA stent without BaSO4. Conclusion Because of the developable characteristic of the urethral stent, it is convenient to check the position and degradation degree of the stent after surgery. And the stent still has good biocompatible and mechanical properties.
出处
《中国医学影像技术》
CSCD
北大核心
2007年第1期144-146,共3页
Chinese Journal of Medical Imaging Technology
基金
北京市教委产业化资助项目(20051005)。
关键词
尿道狭窄
X线
支架
Urethral stricture
X-ray
Stent
