Hogan & Hartson, LLP
Blood pump and ventricular assist device
The blood pump according to the present invention comprises a casing having a blood inlet and a blood outlet, and an impeller for circulating blood by rotating inside the casing, wherein both the casing's and the impeller's surfaces in contact with blood are formed of a biocompatible metal, and onto the surfaces in contact with blood a coating film of a hemocompatible material comprising a phospholipid polymer is formed. According to the present invention, the blood pump effectively suppresses the development of thrombi without activating blood coagulation factors such as thrombocites (blood platelets) in the blood, thanks to a coating film of a hemocompatible material made of a phospholipid polymer being formed onto the surfaces in contact with blood of the casing and the impeller composing the main part of the blood pump.
Sun Medical Technology Research Corporation
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Kenji
Yamazaki