| 女性压力性尿失禁尿道下吊带术后尿道壁的力学分析 |
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| 引用本文： | 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) |
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| 作者姓名： | 周围 丁祖泉 童晓文 |
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| 作者单位： | 1. 同济大学附属同济医院妇产科,上海,200065
2. 同济大学生命科学与技术学院,上海,200092 |
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| 摘 要： | 目的 测最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最为(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)患者尿道壁的变形最为术前的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.
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| 关 键 词： | 尿失禁 压力性 尿道 尿道下吊带手术 生物力学 |
Mechanical analyses on urethra wall after suburethral slings for female pig stress urinary incontinence |
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| ZHOU Wei,DING Zu-quan,TONG Xiao-wen. Mechanical analyses on urethra wall after suburethral slings for female pig stress urinary incontinence[J]. Acta Academiae Medicinae Militaris Tertiae, 2009, 31(19) |
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| Authors: | ZHOU Wei DING Zu-quan TONG Xiao-wen |
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| Affiliation: | ZHOU Wei1,DING Zu-quan2,TONG Xiao-wen1(1Department of Obstetrics and Gynecology,Tongji Hospital,Tongji University,Shanghai 200065,2School of Life Sciences and Technology,Shanghai 200092,China) |
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| 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 modu... |
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| Keywords: | stress urinary incontinence urethra suburethral slings biomechanics |
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