The present invention provides a purge solution circulating apparatus of the blood pump is obtained by increasing the sealing performance of the sliding device than conventional blood pump.
A state was opposed to the second sliding surface of the first sliding surface and the rotary side sliding member of the stationary sliding member, and the blood of each outer circumferential side of the stationary sliding member and the rotary side sliding member a sliding device used (1) in a state of being contacted, the purge solution circulation unit for circulating the purge solution in the stationary sliding member and the rotary side sliding member (210), configured to circulate the purge solution a has been and purge solution circulation route (420) the purge solution circulating apparatus of the blood pump and a (200), the purge solution circulation unit (2
10) includes a purge solution circulation pump which gives moving force to the purge solution (212), said purge when through each inner circumferential side of the fixed-side sliding member and the rotary side sliding member returns to the purging fluid reservoir and a flow rate adjustment is flow rate control valve of the liquid (214).