Liu G
Zhonghua Yi Xue Za Zhi. 1991 May;71(5):266-8, 20.
Under uniaxial loading, the mechanical properties of fifteen canine tracheas were tested by CSS-2100 electronic universal testing machine, (produced by Changchun Institute of Testing Machines), which was equipped with X-Y recorder, deformation testing gauge and Super Computer, etc. Tracheas of 22 healthy adult dogs were divided into 3 groups. The 1st group contained normal tracheas, the 2nd group contained tracheas medially cut and the tension test. These features from one-dimension tensile anastomosed end-to-end with 0.2 mm silk sutures. The 3rd group contained those anastomosed with 0.3 mm silk sutures. The results showed that in the 1st group although there was a nonlinear stress-strain relationship, the linear segment was not clear. The stress produced by the suture formed the incisive force because of small section area and stress concentration. The thickness of the membrane paries of the canine trachea was greater than that of the annular ligament, but smaller than that of the cartilage ring. The length of the membrane paries was smaller than that of the cartilage ring. Consequently, an uneven stress distribution was seen. The results of this experiment might serve as a basis for further research on the biomechanical implications of human trachea reconstruction.
在单轴加载下，使用CSS - 2100电子万能试验机（由长春试验机研究所生产）对15个犬气管的力学性能进行测试，该试验机配备了X - Y记录仪、变形测试仪和超级计算机等。将22只健康成年犬的气管分为3组。第1组包含正常气管，第2组包含内侧切开并进行张力测试的气管，这些气管用0.2毫米丝线端端吻合进行一维拉伸。第3组包含用0.3毫米丝线吻合的气管。结果表明，第1组中虽然存在非线性应力 - 应变关系，但线性段不明显。由于缝合线截面积小且应力集中，缝合线产生的应力形成了切割力。犬气管膜壁的厚度大于环状韧带，但小于软骨环。膜壁的长度小于软骨环。因此，观察到应力分布不均匀。本实验结果可为进一步研究人类气管重建的生物力学意义提供依据。
