810 消化管内における医用機器挿入特性の測定(OS-3 バイオ・マイクロ精密機器のトライボロジー)

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This paper describes a new low invasive method to drive a medical device with a spiral-ribbed impeller, which converts rotation to axial motion hydro dynamically using mucus. We measured the thrust force and total friction during the propulsion of the device as the differences of the curvature of an organic tube. As a result, both the total friction and the thrust force increased as the reduction of radius of the curvature. However, the thrust force was larger than the total friction. The reason for this, we think, was the reduction of the thickness of the fluid film between an organic wall and a spiral-ribbed impeller. In addition, the thrust force increased largely in increasing the rotation velocity of the ribbed impeller.
社団法人日本機械学会の論文
2000-03-16