兔盆底组织力学特性的实验研究

Experimental Study on the Biomechanical Characteristics of Pelvic Floor for Rabbits

目的研究分娩与未分娩兔盆底组织的生物力学特性。方法以14只新西兰雌性大白兔盆底组织为拉伸试样,分娩与未分娩分组对照,用WDW4100微机控制电子万能实验机进行拉伸实验,测定其应力应变关系,蠕变和应力松弛特性。结果得到了闭孔内肌和孖肌肌腱的极限强度、最大刚度、应力应变关系和粘弹性特征。结论分娩与未分娩兔盆底组织生物力学特性存在明显的差异,这对临床上研究人类盆底组织有一定的参考价值,有助于妇产泌尿科学的发展。

Objective To study the biomechanical properties of pelvic floor tissue for the rabbit and compare them to look at differences and similarities between the delivery and the un-delivery group. Methods 16 New Zealand female big white rabbits were divided into delivery group and un-delivery group. Specimem of the pelvic floor were tested in tension experiment to determine its stress-strain relationship, the creep and the stress relaxation test. The instrument used is WDW4100 almighty test machine by PC controlling. Results The ultimate strength and the maximum stiffness were obtained for the obtttrator internus and the Ziji tendon, as well as the stress-strain relationship and the viscoelasticity. Conclusions The biomechanical properties of the pelvic floor for the delivery group and the un-delivery group are obvious difference. It may be helpful to the clinical study for the human pelvic floor and the development of obstetrics , gynecology and urology..