Effects of Hematocrit of the Sealed Blood on the Leakage Characteristics of Blood Cell Component and Plasma Component in a Mechanical Seal

摘要

The purpose of this study is to find the effects of hematocrit of the sealed blood on the leakage characteristics of blood cell components and plasma components in the mechanical seal which separates blood from cooling water in a rotary blood pump. The hematocrit of the sealed blood was controlled to 0, 20, 40%. Each component leakage was obtained by measuring the increase in the sodium ion concentration and the potassium ion concentration in the cooling water. As a result, it was found that both the component leakages became smaller as the hematocrit was reduced. It was also revealed that the blood cell component leakage with the hematocrit of 20% was suppressed compared to that with the hematocrit of 40%. The effects of the hemolytic properties of the sealed blood on the leakage characteristics were also studied.