Biomechanical modeling of the rectum for the design of a novel artificial anal sphincter.
Biomechanical modeling of the rectum for the design of a novel artificial anal sphincter.
复制标题
DOI：
10.2345/0899-8205-44.3.257
复制
发表时间：
2010-05-01
影响因子：
--
通讯作者：
Luo, Nianting
中科院分区：
文献类型：
--
作者：
Zan, Peng;Yan, Guozheng;Luo, Nianting
本文讨论了与人类直肠周围新型人工肛门括约肌的选择相关的生物力学问题。该假体由内部的压缩套囊系统和外部的储液套囊系统组成，该系统放置在衰弱的括约肌周围。微型泵在袖带之间转移液体，从而接管括约肌的扩张和压缩功能。然而，人类的直肠并不是一个刚性的管道，由于肠道容易受到损伤，因此在直肠中的运动变得更加复杂。以设计安全可靠的机器为目标，研究了体内猪直肠的生物力学特性并分析了组织缺血。
This paper discusses biomechanical issues that are related to the option of a novel artificial anal sphincter around the human rectum. The prosthesis consists of a compression cuff system inside and a reservoir cuff system outside, which is placed around the debilitated sphincter muscle. The micropump shifts fluid between the cuffs and thus takes over the expansion and compression function of the sphincter muscle. However, the human rectum is not a rigid pipe, and motion in it is further complicated by the fact that the bowel is susceptible to damage. With the goal of engineering a safe and reliable machine, the biomechanical properties of the in-vivo porcine rectum are studied and the tissue ischemia is analyzed.