515 MERAモノピポット遠心ポンプの耐久性と血液適合性(OS5-(3)オーガナイズドセッション《ライフサポートにおける工学技術》)

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Durability and hemocompatibility of MERA monopivot centrifugal pump A durability test and in vitro anti-thrombogenic tests were conducted for a MERA monopivot centrifugal pump made of polycarbonate newly developed for circulatory assist and open heart surgery. The 50 mm impeller is composed of 4 straight paths. A durability test has been conducted for 4 weeks at 300mmHg-4L/min with a closed circuit filled with 37'C saline. In vitro anti-thrombogenic tests were conducted at 200mmHg-4L/min with a closed circuit filled with 37'C bovine blood together with sodium citrate and calcium chloride to keep ACT at 200sfor two hours. As a result, the wear rate was 1.1 μm/day in average. The thrombus found in the female pivot was successfully removed by redesign. It was verified that the MERA monopivot centrifugal pump has sufficient durability and hemocompatibility.
2010-08-27