Closed-type blood reservoir and extracorporeal blood circulation apparatus having a bubble removal means.

摘要

A closed-type blood reservoir comprising:an outer shell in which a blood storage chamber shell (11a) and a volume adjustment chamber shell (11b) each including a curved, outwardly convex portion are joined together and form a space therewithin;a flexible septum (3) that is interposed between the blood storage chamber shell (11a) and the volume adjustment chamber shell (11b), and that divides the space into a blood storage chamber (1) for storing blood and a volume adjustment chamber (2) for storing volume adjustment liquid;a blood inlet port (4) , a blood outlet port (5), and a blood storage chamber air discharge port (9), that are provided in the blood storage chamber shell (11a); anda volume adjustment liquid port (8) for injecting and ejecting the volume adjustment liquid (2) and a volume adjustment chamber air discharge port (10) that are provided in the volume adjustment chamber shell (11b);wherein part of the inner circumferential portion region of the septum (3) along the outer circumferential edge of the blood storage chamber shell (11a) forms a flat portion that is substantially flat, and the inner region of the septum (3) that is located inside the flat portion is molded such that it can project as a curved surface toward the blood storage chamber shell (11a) or the volume adjustment chamber shell (11b).