公开(公告)号：US20170319086A1

公开(公告)日：2017-11-09

申请号：US15522642

申请日：2015-10-28

Applicant: NIPRO CORPORATION

Inventor： Toshiaki MASUDA ,  Takeshi YAMAGUCHI

IPC: A61B5/022 ,  A61B5/021 ,  A61B5/026 ,  A61B5/02

CPC classification number: A61B5/02241 ,  A61B5/02007 ,  A61B5/02141 ,  A61B5/026 ,  A61M1/3639 ,  A61M2205/3331

Abstract: A blood circuit having a pressure measurement portion connected to a pressure measurement device includes: a first measurement portion provided downstream of a pumping segment; and a second measurement portion provided upstream of the pumping segment. The first measurement portion includes: a first housing having a tubular shape; and a first flexible membrane having a tubular shape and provided in the first housing. The second measurement portion includes: a second housing having a tubular shape; and a second flexible membrane having a tubular shape and provided in the second housing. A space between the first flexible membrane and the first housing is larger than a space between the second flexible membrane and the second housing in an initial state before permitting the blood to flow.