BLOOD CIRCUIT AND EXTRACORPOREAL CIRCULATION APPARATUS COMPRISING THE BLOOD CIRCUIT

• Main Authors: SAITO TERUHISA, MASAOKA KATSUNORI
• Format: Patent
• Language: English; Japanese
• Published: 25.04.2019
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

To provide: a blood circuit that in the case of measuring a flow rate of the blood circuit using an ultrasonic sensor, allows for more accurate measurement than measurement of a flow rate using a tube having a small diameter; and an extracorporeal circulation apparatus comprising the blood circuit.SOLUTION: A blood circuit 110 used for an extracorporeal circulation apparatus comprises: a pump segment part 1110; an artery side line 111 composed of a first artery side line and a second artery side line; and connection members which includes, on one end side, a large diameter part 115L to which the pump segment can be connected and on the other end side, a small diameter part 115S to which the artery side line can be connected. Either one of a first connection member and a second connection member is a measurement connection member 115M having a constant diameter part 115C between the large diameter part 115L and the small diameter part 115S. Wave transmission/reception devices 141A, 141B of an ultrasonic flow meter 140A are attached to the constant diameter part 115C.SELECTED DRAWING: Figure 2 【課題】超音波センサにより血液回路の流量を測定する場合において、細い径のチューブを用いて流量を測定する場合よりも精度の高い測定が可能な血液回路、及び該血液回路を備える体外循環装置を提供する。【解決手段】体外循環装置に用いられる血液回路１１０は、ポンプセグメント部１１１０と、第１の動脈側ラインと、第２の動脈側ラインとで構成される動脈側ライン１１１と、一端側にポンプセグメント部を接続可能な大径部１１５Ｌと他端側に動脈側ラインを接続可能な小径部１１５Ｓとを有する接続部材と、を備え、第１の接続部材及び第２の接続部材のいずれか一方は、大径部１１５Ｌと小径部１１５Ｓとの間に径一定部１１５Ｃを備える測定用接続部材１１５Ｍであり、径一定部１１５Ｃに超音波流量計１４０Ａの送受波器１４１Ａ、１４１Ｂが取り付けられる。【選択図】図２