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A Method for Monitoring the Working States of Drainage Tubes Based on the Principle of Capacitance Sensing

机译：一种基于电容传感原理的排水管工作状态监测方法

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The real-time monitoring of the working status of drainage tubes is crucial for successful surgical drainage and for informing clinicians of the drainage conditions of patients at different stages, to enable objective diagnosis and treatment. In this study, a method for monitoring the drainage condition of drainage tubes was proposed. The method was based on the principle of capacitance and was developed by analyzing the major states of drainage tubes in the process of drainage. Meanwhile, the principle of interdigital capacitance monitoring drainage was analyzed, and an interdigital capacitance device for the real-time monitoring of the working status of drainage tubes was designed. Ultimately, an experimental system for drainage simulation was established on the basis of the interdigital capacitance device and method for drainage monitoring. Results showed that the interdigital capacitance device for drainage monitoring can identify unobstructed or blocked drainage tubes effectively in real time. The device has a hydrophobic surface, so its electrodes do not undergo electrolysis and pollution due to adhesion. Hence the proposed capacitance-based method for monitoring the working states of drainage tubes has good application prospects in the postoperative drainage of abdominal and thoracic cavities.
机译：引流管工作状态的实时监控对于成功进行外科引流以及将不同阶段患者的引流情况告知临床医生以实现客观的诊断和治疗至关重要。在这项研究中，提出了一种监测排水管排水状况的方法。该方法基于电容原理，是通过分析排水过程中排水管的主要状态而开发的。同时，分析了叉指电容监测排水的原理，设计了一种用于实时监测引流管工作状态的叉指电容装置。最终，在叉指电容装置和排水监测方法的基础上，建立了排水模拟实验系统。结果表明，用于排水监测的叉指电容装置可以实时有效地识别排水管是否畅通或阻塞。该设备具有疏水性表面，因此其电极不会因粘附而发生电解和污染。因此，提出的基于电容的引流管工作状态监测方法在腹腔和胸腔术后引流中具有良好的应用前景。

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