ブタ大腸の破断強度の研究

概要

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The colonoscope is widely employed for cure of a large intestinal disease. However, the medical accidents such as large intestines perforation by an immature doctor is still increase, because insertion operation of the colonoscope is highly skillful. To solve this problem, We think that development of a training device is effective. We aim to verify whether the porcine large intestines are able to become substitute as the human large intestines. The tensile experiment and the punch experiment were conducted on 243 samples of 14 pigs. The tensile experiment showed that stress at break was 0.20±0.08MPa, and strain at break was 0.51±0.24, and Young's modulus was 0.42±0.22MPa, and the poisson ratio was 0.71±0.22. Imitative endoscope extended the porcine large intestines forward perpendicular direction from the surface. The results showed the porcine large intestines were perforated by 11.9±2.8N. All results showed that porcine large intestines were able to become substitute of human large intestines.
2009-08-25