摘要
目的研究医用水刀切割软组织的力学性能,验证医用水刀具有软组织选择性切割的良好特性。方法测定猪肝脏实质和不同尺寸动静脉血管的拉伸力学性能,对猪以及Wistar大鼠肝脏实质进行切割,血管分离,进行大鼠肝脏病理切片,HE染色,最后对实验现象进行研究分析。结果右叶猪肝脏医用水刀切割实验,压力设定为3 MPa时保留最细血管的直径为0.8 mm。大鼠肝脏手术刀与医用水刀对比切割的病理切片表明医用水刀对组织的损伤较小。结论医用水刀对不同特性的软组织具有选择性切割的良好特性,能有效避免现有手术刀的"一刀切"现象。
Objective To study mechanical properties of the medical waterjet scalpel when cutting parenchyma such as liver and verify its tissueselective cutting characteristic. Methods The tension mechanical properties of porcine liver parenchyma and its vessels with different sizes were determined. Porcine and Wistar rat liver tissues were cut with arteriovenous vessels well reserved, and pathological section of the rats were analyzed by HE stai ning to explain the experimental phenomena. Results When the working pressure was set at 3 MPa, the incising and separating on the right lobe of porcine liver by medical waterjet scalpel in this experiment were done with minimal vessels of 0.8 mm in diameter left. Pathological sections from ordinary scalpel and medical waterjet scalpel showed that the medical waterjet scalpel caused smaller tissue damage. Conclusions The medical wa terjet scalpel could cut heterogeneity soft tissue with highlyselective characteristics, which may effectively avoid the existing ＂one size fits all＂ phenomenon caused by ordinary scalpel.
出处
《医用生物力学》
EI
CAS
CSCD
北大核心
2013年第1期85-90,共6页
Journal of Medical Biomechanics
基金
天津科技支撑计划重点项目(11ZCKFSY01900)
关键词
医用水刀
软组织
力学性能
肝脏
血管
Medical water-jet scalpel Soft tissue Mechanical properties Liver
Blood vessels
