模拟直升机垂直向碰撞伤的初步研究

发布时间：2018-02-13 09:54

  本文关键词： 直升机 事故伤 垂直向 减速度 创伤/损伤　出处：《第三军医大学学报》2017年11期 　论文类型：期刊论文

【摘要】：目的在生物碰撞实验平台基础上,用成体香猪开展头盆向碰撞减速实验,研究直升机坠落事故(垂直向碰撞)的损伤特点。方法成年从江香猪18只,根据速度差变化简单随机抽样分为2组(n=9);猪以"仰卧位"固定,进行头盆向刚性碰撞模拟直升机垂直坠落,碰撞速度分别设置为Ⅰ组:8 m/s,Ⅱ组11 m/s;观察碰撞后即刻至伤后6 h两组的存活情况、形态学改变、血气指标的变化,进行损伤组织的影像学观察,分析简明损伤评分(AIS)、损伤严重程度评分(ISS)的情况。结果Ⅰ组速度差(8.21±0.13)m/s,Ⅱ组速度差(10.69±0.41)m/s,垂直向减速度载荷分别为127.85 g和164.35 g,动物中枢神经系统、脊柱和胸腹重要脏器均出现损伤,ISS评分分别为(26.67±5.02)分和(52.71±6.13)分(P0.05),动物总体伤情达到重伤和危重伤。结论成功制作直升机垂直碰撞的重伤与危重伤动物模型,初步明确脾破裂、肺挫伤为其胸腹部损伤的特点。
[Abstract]:Objective to study the damage characteristics of helicopter crash accident (vertical impact) by using adult Xiang pig's head-basin impact deceleration test on the basis of biological collision experiment platform. Methods 18 adult Congjiang Xiang pigs were used to study the damage characteristics of helicopter crash accident (vertical impact). According to the variation of velocity difference, a simple random sampling was divided into two groups. The pig was fixed in "supine position" to simulate the vertical fall of helicopter in the head-basin direction of rigid collision. The impact velocities were set to 1: 8 m / s in group 鈪，

本文编号：1507883