摘要
本文采用自由落体式撞击载荷对17只狗下腹部撞击致伤,动态实时测量了动物各主干血管内血流的压力变化过程:并通过高速摄影和高速X线摄影技术同步记录和分析了狗腹腔的压缩变形过程和肝实质局部的变形位移,对腹部撞击伤时肝脏损伤的生物力学效应作了一定的分析和讨论.
We observed the compression process of dog's abdomen by high-speed cinematography, measured the change of the blood梖luid pressures in thoracaorta, abdominoaorta, inferior vena cava and hep-atoportal vein, and computed the deformation of liver by high -speed flash radiography and image processing during the impact on the dog's abdomen. The experimental results showed that the rapid inward displacement of the abdomen wall is the primary response of abdomen to the impact and the principal factor responsible for the transfer of energy into the body, and causes blood ?fluid pressures in the vascular system to increase sharply. The blood -fluid pressure in hepatoportal vein is three times as high as that out hepatoportal vein; therefore, blood can rush to the liver. Moreover, it is evident that liver injury is mainly an indirect result of the impact on abdomen. A brief discussion on the biomechanical mechanism of liver injury is presented.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
1994年第1期9-13,共5页
Journal of Biomedical Engineering
基金
全军"八五"重点攻关课题分题
关键词
击伤
生物力学
肝损伤
Impact injury Biomehanics Liver injury
