A computerized control system for assisted circulation

辅助循环的计算机控制系统

• 批准号: 08457353
• 负责人: IMAI Yasuharu
• 金额: $ 2.88万
• 依托单位: Tokyo Women's Medical College.
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08457353/
• 关键词: Cardiopulmonary bypass; Assisted circulation; Centrifugal pump; Computer control; Microcomputer; Automatic control

A control system for assisted circulation was developed utilizing a microcomputer. The control system, consisting of a microcomputer, a centrifugal pump, a venous tube occluder, and a level sensor for a reservoir, regulates both arterial infusion and venous withdrawal flow throughout assisted circulation. The computer monitors central venous pressure, left atrium pressure, aortic pressure, and the amount of blood in the reservoir and controls the rotational speed of the pump and the degree of opening of the tube occluder with a control interval of one second. The computer keeps the infusion flow rate within a predetermined range and regulates left atrium pressure to a set point in order to maintain aortic pressure. We designed an online screening algorithm to prevent artifacts on pressure measurements from changing the flow rates. The computerized controller was applied on two patients with low output syndrome after the open-heart surgery and regulated the flow rate and left atrium pressure for four days.

本文介绍了一种利用微型计算机的辅助循环控制系统。控制系统由微型计算机、离心泵、静脉管封堵器和储液器液位传感器组成，在整个辅助循环过程中调节动脉输注和静脉回输流量。计算机监测中心静脉压、左心房压、主动脉压和储血器中的血液量，并以1秒的控制间隔控制泵的转速和导管封堵器的打开程度。计算机将输注流速保持在预定范围内，并将左心房压力调节到设定点，以维持主动脉压。我们设计了一种在线筛选算法，以防止压力测量的伪影改变流速。应用该控制器对2例心内直视术后低心排综合征患者进行了连续4天的流量和左房压调节。

项目成果

T.Beppu, K.Seo, Y.Imai, Y.Takanashi, S.Hoshino, J,Ohta, M.Aoki, S.Uchita, S.Suzuki, Y.Tajima, N.Tooyama, F.Fkui: "An automatic controller for a centrifugal blood pump" Attif Organs. Vol.21, No, 7. 630-634 (1997)

T.Beppu、K.Seo、Y.Imai、Y.Takanashi、S.Hoshino、J、Ohta、M.Aoki、S.Uchita、S.Suzuki、Y.Tajima、N.Tooyama、F.Fkui：“An

T, Beppu Y, Fukui Y, Imai: "A clcsed-loop controller for cardiepulymenary by pass using a preparetiond-intergral regulator with a set-point" J Comput Aidcd Surg. 1(3). 69-77 (1995)

T、Beppu Y、Fukui Y、Imai：“使用带有设定点的准备积分调节器的心肺旁路闭环控制器”J Comput Aidcd Surg。

別府俊幸、今井康晴、他: "フレキシブルリサンバ用血液量センサの開発" 人工臓器. 25(4). 826-828 (1996)

Toshiyuki Beppu、Yasuharu Imai 等人：“用于灵活相似的血量传感器的开发”25(4) 826-828 (1996)。

T.Beppu, Y.Fukui, Y.Imai: "A closed-loop controller for cardiopulmonary bypass using a proportional-integral regulator with a set-point adjuster." J Comput Aided Surg. 1(3). 69-77 (1995)

T.Beppu、Y.Fukui、Y.Imai：“使用带有设定点调节器的比例积分调节器的心肺旁路闭环控制器。”

T, Beppu K, Seo Y, Imai et.al.: "An automatic controller for a contrifugal blood pump" 21(7). 630-634 (1997)

T、Beppu K、Seo Y、Imai 等人：“离心血泵的自动控制器”21(7)。