J0203-1-1 拍動流下での遠心型補助人工心臓内部流れの実験的検討 : 抗血栓性評価を行うための壁面せん断応力の計測(医療診断のためのマルチスケール血流動態計測と解析(1))

概要

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Flow in a centrifugal pump Ventricular Assist Device (VAD) under the pulsatile flow condition was visualized to investigate the effect of pulsatile on the flow conditions. In this paper, we measured the flow distribution with Laser Doppler Velocimeter (LDV) between the impeller and the pump casing, which is supposed to affect the blood-cell destruction in the device. The VAD rotating speed was 2100rpm and the flow rate through the VAD varied from 0 to 13L/min (mean 5.3L/min). The flow velocity decreased in the high flow rates, and increased in the low flow rates. Under the steady flow of 4L/min, the wall shear stress (WSS) was 10Pa, on the other hand, under the pulsatile flow, the WSS varied in the range of 3-10Pa, and was 7Pa on an average.
社団法人日本機械学会の論文
2009-09-12