持続性食道盲端ンゲータの研究 : I.基礎的研究及び空気圧ンゲータの開発

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Fundamental studies and clinical application of the continuous esophageal pouch elongator were performed. In the fundamental studies, the streching test of canine esophagus revealed that the force load necessary for tearing off the esophageal specimen was 4-8 kgf. The force load in theclinical application up to 200 gf was taken to be within the safty range. In this streching test, the esophagus of puppy was proven to be more easily elongated than that of adult dog. According to these measurements, a fundamentat mathematical model of esophageal viscoelasticity was calculated to be F(t)=F/K(1-e-Kt/r_1)+Ft/r_2. This is an addition of elasticity and viscosity function. A newly deviced elongator worked under direct measurement and display of the loaded force and esophageal elongation. The elongator was also devised to protect the pharyngoesophageal area from harm. The elongating part was consisted of bellows artificial artery which could dilate and deflate according to a given air pressure. This part was fixed to the mouth piece plate of the individually made helmet. Control part was regulated by a microcomputer, which worked under the input regulating data, present interval of pressure load and alarm circuit for preventing dangerous overload in reference to mathematical model. This apparatus was successfully applied to a patient with Gross A type esophageal atresia, with apart distance of 6 vertebral bodies between the pouches, in the course of 11 months. Direct anastomosis aided by an additional procedure of Livaditis myotomy was achieved without troubles.
日本小児外科学会の論文
1986-06-20

持続性食道盲端ンゲータの研究 : I.基礎的研究及び空気圧ンゲータの開発

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持続性食道盲端***ンゲータの研究 : I.基礎的研究及び空気圧***ンゲータの開発

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持続性食道盲端ンゲータの研究 : I.基礎的研究及び空気圧ンゲータの開発