NEWLY DEVELOPED BLOOD PUMP AND CONTROL UNIT FOR NEONATAL EXTRACORPOREAL MEMBRANE OXYGENATION

• Published in: Jinko Zoki Vol. 23; no. 1; pp. 328 - 331
• Main Authors: ITO, F., UMEDA, T., SEO, T., TAKAGI, H., SUZUKI, A., ITO, T.
• Format: Journal Article
• Language: Japanese
• Published: JAPANESE SOCIETY FOR ARTIFICIAL ORGANS 1994; 一般社団法人 日本人工臓器学会
• Subjects: automatic control system; ECMO; neonate
• ISSN: 0300-0818; 1883-6097
• DOI: 10.11392/jsao1972.23.328

We developed a new automatically driven blood pump for neonatal extracorporeal membrane oxygenation circuit. Our blood pumps consisted of a pair of sac-typed air driven blood pumps with LED sensors, which are controlled with three types of pumping mode. A-mode: the output was as same as the intake meeting the Starling's law, B-mode: the output was modified by delaying compression of the blood chambers after they filled, and C-mode: the blood pumps kept a constant output by applying positive or negative pressure on the air chambers regardless of the resistence at both the inflow and outflow. These characteristics of each mode were demonstrated on a mock circulation. Our experiment suggests the usefulness combining these modes for neonatal ECMO, and makes all of ECMO course automatically controlled and safely operated starting and maintaining with A-mode and B-mode, and weaning performed with C-mode.