血液浄化装置

Japanese Patent JP7228005

B2

In draining liquid in an AV-coupling-type blood circuit, it is determined that the blood circuit is in an AV-coupled state. A blood purification apparatus includes: a blood circuit which has a blood removal side circuit and a blood return side circuit and can form a closed circuit by having a first end portion of the blood removal side circuit and a first end portion of the blood return side circuit connected to each other via a blood purifier and having a second end portion of the blood removal side circuit and a second end portion of the blood return side circuit connected to each other; a blood pump provided at the blood circuit; a flow channel switch unit capable of switching between an open state in which fluid can flow through the first end portions of the blood removal side circuit and the blood return side circuit and a closed state in which the fluid cannot flow therethrough; a pressure detection unit that detects pressure inside the blood circuit; and a control unit that executes a drainage process of draining liquid remaining in the blood circuit to a predetermined drainage destination with the blood circuit forming the closed circuit. The control unit generates a difference in pressure between the blood removal side circuit and the blood return side circuit by rotating the blood pump in the closed state and then determines whether the blood circuit is the closed circuit by switching to the open state and monitoring the difference in pressure from a detection result from the pressure detection unit.

Kazuya Tsuji
Takuya Maeda
Chiaki Teru

JP2021098770A

February 22, 2023

June 14, 2021

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NIKKISO CO.,LTD.

A61M1/36; A61M1/16; A61M60/109; A61M60/37; A61M60/531

JP2007135885A
JP2016165402A
JP2003180823A

Patent Attorney Tani / Abe Patent Office

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