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首页> 外文期刊>Journal of Biomechanics >Mechanical properties of the human gastrointestinal tract.
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Mechanical properties of the human gastrointestinal tract.

机译：人体胃肠道的机械性能。

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The tensile properties of the human esophagus, stomach, small and large bowel were examined on an Instron 1221 tensiometer. The values of maximal stress and destructive strain were the following: for esophagus-1.2MPa and 140%, respectively, for stomach axial specimens-0.7MPa and 190%, for stomach transversal specimens-0.5MPa and 190%, for small bowel transversal specimens-0.9MPa and 140% and for large bowel transversal specimens-0.9MPa and 180%. Tests conducted on small and large bowel axial specimens permitted examination of the intestinal wall as a multi-layered structure. The mechanical properties of tested bowels in axial and transversal directions were qualitatively different. The submucosa and muscular layers condition the mechanical strength of bowel wall, while the serosa and mucosa showed no significant strength. Reproducible results were generated for cadaveric and surgically removed stomach and small intestine, which showed their mechanical properties similar under certain storage conditions. The data received could be used for monitoring of the mechanical properties of bowel wall layers under different conditions and for checking of bowel distension sequences.
机译：在Instron 1221张力计上检查人食道，胃，大小肠的拉伸特性。最大应力和破坏应变的值如下：食道-1.2MPa和140％，胃轴向标本-0.7MPa和190％，胃横切样本-0.5MPa和190％，小肠横切样本-0.9MPa和140％，大肠横切样本-0.9MPa和180％。在大小肠轴向样本上进行的测试允许检查肠壁为多层结构。被测肠在轴向和横向的力学性质在质量上是不同的。粘膜下层和肌肉层调节肠壁的机械强度，而浆膜和粘膜无明显强度。对于尸体和手术切除的胃和小肠，产生了可重复的结果，在某些存储条件下，其机械性能相似。接收到的数据可用于监测不同条件下肠壁层的机械性能，并用于检查肠扩张顺序。

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