Moorcroft David M, Stitzel Joel D, Duma Greg G, Duma Stefan M
Virginia Tech, Impact Biomechanics Laboratory, Blacksburg, VA, USA.
Am J Obstet Gynecol. 2003 Aug;189(2):540-4. doi: 10.1067/s0002-9378(03)00519-2.
The goal of this study was to create a computational model of the pregnant occupant of a motor vehicle to predict fetal outcome in crashes.
A finite element uterine model of a 7-month pregnant woman was created and integrated into a multibody human model. Unrestrained, three-point belt, and three-point belt plus airbag tests were simulated at speeds that ranged from 13 to 55 km per hour.
Peak uterine strain, as determined by the model, correlated well with the risk of fetal death, as determined by investigations of car crashes. The strain in the uterine wall exceeded the limits of the tissue in simulations of no restraint at 35 km per hour and three-point belt tests at 45 and 55 km per hour. The safest restraint for the pregnant driver is the combination three-point belt and airbag.
The model is a good first step toward the prediction of the risk of fetal death and verified experimental findings that note the importance of proper restraint use for the pregnant occupant.
本研究的目的是创建一个机动车内孕妇的计算模型，以预测碰撞时的胎儿结局。
创建了一个7个月孕妇的有限元子宫模型，并将其集成到一个多体人体模型中。模拟了速度范围为每小时13至55公里的无约束、三点式安全带以及三点式安全带加安全气囊测试。
该模型确定的子宫峰值应变与车祸调查确定的胎儿死亡风险密切相关。在每小时35公里的无约束模拟以及每小时45和55公里的三点式安全带测试中，子宫壁的应变超过了组织的极限。对怀孕驾驶员最安全的约束方式是三点式安全带和安全气囊的组合。
该模型是朝着预测胎儿死亡风险迈出的良好第一步，并验证了实验结果，即适当使用约束装置对车内孕妇的重要性。
