中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (30): 5686-5689.doi: 10.3969/j.issn.1673-8225.2010.30.043

• 数字化骨科 digital orthopedics • 上一篇    下一篇

体外循环液位及压力变化报警装置的设计与临床应用价值

李景文1，龙  村1，楼  松1，魏西广2   

  1. 1中国医学科学院阜外心血管病医院体外循环科，北京市  100037；2北京恒中科技有限公司，北京市  100075
  • 出版日期:2010-07-23 发布日期:2010-07-23
  • 作者简介:李景文★，男，1967年生，吉林省镇赉市人，汉族，2001年白求恩医科大学毕业，硕士，副主任医师，副教授，主要从事体外循环灌注工作和血液保护、脑保护、心肌保护及仪器设备的设计等方面的研究。

Design and clinical application of HZ-01-A level detector and pressure monitor

Li Jing-wen1, Long Cun1, Lou Song1, Wei Xi-guang2   

  1. 1 Department of Cardiopulmonary Bypass, Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing   100037, China; 2 Hengzhong Technology Co., Ltd., Beijing   100075, China
  • Online:2010-07-23 Published:2010-07-23
  • About author:Li Jing-wen★, Master, Associate chief physician, Associate professor, Department of Cardiopulmonary Bypass, Cardiovascular Institute and FuWai Hospital, Chinese Academy of Medical Sciences, Beijing 100037, China lijingwen118@yahoo.com.cn

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摘要：

背景：加强体外循环期间的监测可以减少体外循环相关的死亡率。液位、压力监测是体外循环的重要检测项目，是患者的生命线，对体外循环中液位、压力的监测是必不可少的。
目的：设计液位、压力报警器并探讨其可行性及临床应用价值。
方法：液位、压力报警器由压力传感器、光电发射器、光电探测器、控制核心及液晶显示模块等部分组成。利用光线的折射及反射原理，光线在两种不同介质的分界面将会产生反射或折射现象。压力的大小变化通过压力传感器转换成相应的电信号的强弱变化。根据上述两种原理，设计液位、压力报警器。以30例年龄1~75岁，需体外循环下行心脏手术患者为对象，观察体外循环中不同灌注流量时体外循环管道内压力的变化及低于设定液面时液位是否报警。
结果与结论：体外循环管道内泵压随流量增加而增加，HZ-01-A型液位、压力变化报警器及机械压力表测得的压力都随流量增加而增加，具有近乎一致的相关关系，HZ-01-A型液位、压力变化报警器及机械压力表测得数值无统计学差异。当体外循环管道内压力变化超过设定压力及储血器内液面低于设定液面时，HZ-01-A型液位、压力变化报警器可以声光报警。HZ-01-A型液位、压力变化报警器在体外循环中可以安全、准确地监测泵压的变化及液面位置，提高体外循环的安全性。

关键词: 体外循环意外, 压力监测, 液位监测, 数字化医学

Abstract:

BACKGROUND: Mortality related to cardiopulmonary bypass can be lowered by intra-operative monitoring system. Monitoring liquid level and pressure is extremely indispensable for examination of cardiopulmonary bypass (CPB).
OBJECTIVE: To design a CPB safety system including an arterial line pressure monitor and low-level sensor, and to evaluate its safety and effects in clinical settings.
METHODS: The safety system was composed of pressure transducer, photoelectric transmitter, photoelectric detector, core controller, and liquid crystal display. The principles of reflection and refraction were applied to the design of level sensor. The pressure measurements were converted into electronic signals and processed. According to two principles above-mentioned, fluid level detector and pressure monitor were designed. Thirty patients with the age of 1-75 years receiving cardiac surgery with cardiopulmonary bypass were enrolled. The arterial line pressure at different pump flows was measured and the alarm function of the level sensor was also validated.
RESULTS AND CONCLUSION: Cardiopulmonary bypass arterial line pressure increased with the pump flow. Arterial line pressure detected by HZ-01-A safety system also increased with the pump flow increasing, which was highly related to the pump pressure. HZ-01-A safety system could alarm when the arterial line pressure and reservoir level exceeded the pre-determined thresholds. HZ-01-A safety system could be safely and effectively applied to clinical cardiopulmonary bypass and improve bypass safety by accurately detecting the pressure and reservoir level.

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