乳幼児点滴時の血栓形成機構解明のための静脈採血手技モデルを用いた穿刺時の力計測による点滴針の血管壁刺激推定とその応力解析

抄録

This paper describes Evaluation of stimulus on the venous stimulus induced PIVC by force measurement during penetration to the model of during penetration using a training model of vein blood sampling to elucidate the thrombosis formation mechanism during infusion of infants and stress analysis on it. As for the force measurement during penetration, CCD movie camera and spring scale were used by image processing. It was found that the maximum penetration force is increasing with penetration angle, and the duration time for penetration is also increasing due to the increment of the angle. As for the contact shear stress analysis on the vein wall, Ansys Mechanical was used to obtain the maximum stress. It was found that the maximum shear stress is approximately 100kPa when the force to move the PIVC is 2N. It is concluded that there is a risk of thrombus formation as the level of the shear stress is several kPa due to the prediction of the shear stress by FEM analysis.