Blood pump

Abstract

A blood pump (10), comprising: a cannula assembly (100) having an infusion cavity (130); an impeller (200) rotatably provided in the infusion cavity (130), the impeller (200) having an accommodating cavity (234) and a communication hole (232) formed thereon, the communication hole (232) being in communication with the infusion cavity (130) and the accommodating cavity (234); a rotating shaft (300) fixedly connected to the impeller (200), one end of the rotating shaft being provided with a protruding head (320) arranged in the accommodating cavity (234); and a base (400) connected to the cannula assembly (100). The base (400) comprises a support shaft (420), an end face (421) of the support shaft (420) forming a concave cavity (421a) cooperating with the protruding head (320). A flow-through gap (240) is formed between the impeller (200) and the base (400), the flow-through gap (240) being in communication with the accommodating cavity (234).

Dependencies are inferred from the claim text.