[1]周围,丁祖泉,童晓文.女性压力性尿失禁尿道下吊带术后尿道壁的力学分析[J].第三军医大学学报,2009,31(19):1843-1846.
 ZHOU Wei,DING Zu-quan,TONG Xiao-wen.Mechanical analyses on urethra wall after suburethral slings for female pig stress urinary incontinence[J].J Third Mil Med Univ,2009,31(19):1843-1846.
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《第三军医大学学报》[ISSN:1000-5404/CN:51-1095/R]

卷:
31卷
期数:
2009年第19期
页码:
1843-1846
栏目:
专题报道
出版日期:
2009-10-15

文章信息/Info

Title:
Mechanical analyses on urethra wall after suburethral slings for female pig stress urinary incontinence
作者:
周围丁祖泉童晓文
同济大学:附属同济医院妇产科,生命科学与技术学院
Author(s):
ZHOU Wei DING Zu-quan TONG Xiao-wen
Department of Obstetrics and Gynecology, Tongji Hospital, Tongji University, Shanghai 200065; School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
关键词:
尿失禁压力性尿道尿道下吊带手术生物力学
Keywords:
stress urinary incontinence urethra suburethral slings biomechanics
分类号:
R318.01;R334.2;R694.54
文献标志码:
A
摘要:
目的   测量雌性尿道壁和聚丙烯网片的力学特性,分析尿道下吊带手术治疗女性压力性尿失禁的力学机制。   方法   对49例雌性猪尿道壁组织条和27例聚丙烯网片试件进行单轴拉伸试验测量力学特性。   结果   雌性猪尿道壁的应力应变曲线呈抛物线,弹性模量与应力的平方根、应变均成正比,由极限应力和极限应变计算最大值弹性模量分别为:0.806 MPa和0.818 MPa;聚丙烯网片的弹性模量为(6.977±1.095)MPa。聚丙烯网片的极限应力显著高于尿道壁组织而极限应变显著低于后者(P<0.01)。计算聚丙烯网片尿道下植入术可降低压力性尿失禁(stress urinary incontinence, SUI)患者尿道壁的变形量为术前的1/3。   结论   聚丙烯网片特殊的力学性能,在施行尿道下吊带术后,可增强对尿道的支持,改善腹压增加时尿道的控尿能力。
Abstract:
Objective   To analyze the mechanical mechanism of suburethral slings by measuring the mechanical properties of female pig urethra wall and polypropylene mesh.    Methods   The uniaxial tension tests of 49 female pig urethra wall strips and 27 polypropylene mesh samples were performed to test the mechanical properties.    Results   The stress and strain of urethra wall displayed a parabola shape and its elastic modulus was proportional to the square root of stress as well as the strain. The maximum calculated elastic moduli of the urethra wall were 0.806 MPa and 0.818 MPa correspondingly calculated with stress and strain. The elastic modulus of polypropylene mesh was (6.977±1.095) MPa. The ultimate stress of polypropylene mesh was significantly higher than that of the urethra wall, and the ultimate strain of polypropylene mesh was significantly lesser than that of the urethra wall. The calculation results suggested that the suburethral slings treatment of poly-propylene mesh decreased the deformation to 1/3 of the untreated stress urinary incontinence.    Conclusion   Polypropylene mesh has special mechanical properties that suit suburethral slings and enhance the support to the urethra, and improve the continence.

参考文献/References:

周围,丁祖泉,童晓文. 女性压力性尿失禁尿道下吊带术后尿道壁的力学分析[J]. 第三军医大学学报,2009,31(19):1843-1846.

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更新日期/Last Update: 2009-09-29