Transactions of Japanese Society for Medical and Biological Engineering
Online ISSN : 1881-4379
Print ISSN : 1347-443X
ISSN-L : 1347-443X
Study of the effect of the shape on blood-removal properties of indwelling needles for hemodialysis
TOMOKO OKUShinobu YamauchiYuka MotohashiToshio SatoTetsuzo AgishiNaokya Shimazaki
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2020 Volume Annual58 Issue Proc Pages 610-611

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Abstract

Most recent methods of blood purification therapy prioritize blood purification efficiency. However, it has been reported that a disparity arises between the set blood removal flow rate and the actual flow rate when thinner indwelling needles are used, reducing blood purification efficiency. Therefore, With the aim of developing indwelling needles that can achieve a sufficient blood removal flow rate even with a thin needle, we have used computational fluid dynamics (CFD) to perform theoretical examinations. In the present study, we compared straight type with high flow type indwelling needle, investigated the optimum shape of the flow path. Comparing the actual flow rates, we found that the high flow type had superior blood removal properties, and that the difference between the set flow rate and the actual flow rate was small. Based on the results, we plan to perform further investigations of the optimal shape of indwelling needles.

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© 2020 Japanese Society for Medical and Biological Engineering
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