Purge solution circulating device for blood pump and auxiliary artificial heart system

摘要

The present invention is a blood pump purge fluid circulation device in which the sliding performance of the sliding device is higher than that of a conventional blood pump. The first sliding surface of the fixed side sliding member and the second sliding surface of the rotating side sliding member are opposed to each other, and each outer peripheral side of the fixed side sliding member and the rotating side sliding member is blood. A sliding device (1) used in contact with the liquid, a purge liquid circulation unit (210) for circulating the purge liquid to the stationary-side sliding member and the rotating-side sliding member, and a configuration for circulating the purge liquid A purge liquid circulation device (200) of a blood pump including a purge liquid circulation path (420), and the purge liquid circulation unit (210) provides a purge liquid circulation pump (212) that gives a moving force to the purge liquid And a flow rate adjustment valve (214) capable of adjusting the flow rate of the purge liquid when returning to the purge liquid storage section through the inner peripheral sides of the fixed side slide member and the rotation side slide member.