BLOOD CIRCUIT, ULTRASONIC FLOW METER, AND EXTRACORPOREAL CIRCULATION APPARATUS

• 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; MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; MEDICAL OR VETERINARY SCIENCE; METERING BY VOLUME; PHYSICS; TESTING

To provide a blood circuit and an ultrasonic flow meter capable of highly accurately measuring a flow rate without application of a solvent such as grease, and an extracorporeal circulation apparatus comprising the blood circuit and the ultrasonic flow meter.SOLUTION: An extracorporeal circulation apparatus comprises a blood pump 111a and an ultrasonic flow meter 140A that includes wave transmission/reception devices 141A, 141B for transmitting/receiving an ultrasonic wave and has a wave transmission/reception surface 1413 for the wave transmission/reception devices configured using a plane. A blood circuit 110 used for the extracorporeal circulation apparatus is configured to include: a main tube 110m that mainly constitutes the blood circuit 110; and a measurement tube 110s that has a tube plane part 1101 in contact with the wave transmission/reception surface 1413 and is used for measuring a flow rate, where the wave transmission/reception devices 141A, 141B are attached to the measurement tube 110s.SELECTED DRAWING: Figure 2 【課題】グリース等の溶剤を塗布しなくとも、高精度に流量を測定可能な血液回路、超音波流量計、及び、該血液回路及び該超音波流量計を備える体外循環装置を提供すること。【解決手段】血液ポンプ１１１ａと、超音波を送受する送受波器１４１Ａ、１４１Ｂを有し、送受波器の送受波面１４１３が平面で構成される超音波流量計１４０Ａと、を備える体外循環装置に用いられる血液回路１１０は、血液回路１１０を主に構成する主チューブ１１０ｍと、送受波面１４１３と接触するチューブ平面部１１０１を有し、流量の測定に用いられる測定用チューブ１１０ｓと、を含んで構成され、測定用チューブ１１０ｓに送受波器１４１Ａ、１４１Ｂが取り付けられる。【選択図】図２