关键词: 电磁血泵;心脏辅助装置;体外循环

    摘 要:目的 测试电磁血泵的流体力学特性，为其进一步完善、进行动物实验及临床应用提供实验依据. 方法 改变血泵工作的不同前、后负荷，通过电磁流量计、生理记录仪、万用表等测试血泵工作电压及工作频率与流量的关系及血泵工作产生压力与流量关系等指标. 结果 体外模拟实验研究结果显示在前、后负荷固定条件下，血泵可产生1.1～7L·min-1 流量;血泵流量与工作电压、频率(r=0.99，P<0.05)及入口压力呈正相关(r=0.99，P<0.05)，与出口压力呈负相关(r=0.99，P<0.05)，血泵输出压力与流量呈正相关(r=0.99，P<0.05). 结论 我们自行设计、加工的小型推板式电磁血泵，经体外模拟实验测试表明其原理可行，性能良好，能满足临床生理所需流量、压力要求，调节方便，可实现一次性使用.

    Development and mock experiments of a small push┐ing┐plate blood pump

    YANG Jian YI Ding-Hua LIU Wei-Yong HE Jian-Guo GONG Xiao-Bo ZHONG Guo-Hui YI Ping-Hu

    1 Center of Cardiovascular Surgery，

    2 Department of Ultrasonography，Xijing Hospital，Fourth Military Medical University，Xi'an710033，China，

    3 Environmental and Chemical Engineering School，Xi'an Jiaotong University，Xi'an710049，China

    Keywords:electromagnetic blood pump;heart-assist devices;cardiopulmonary hypass

    Abstract:AIM To test the hydrodynamic characteristics of the blood pump driven by electromagnetic power so as to make preparations for its further improvements，animal ex-periments and clinical use.METHODS Small pushing-plate blood pump driven by electromagnetic power that was de-signed and made.Using electromagnetic flowmeter and phys-iological recording machine ......