[Development of a balloon sensor device for force-electrical coupling measurement of esophagus].

Q4 Medicine
Peng Ran, Ying Zhong, Yingbing Lai, Lei Liu, Yanhang Zhu, Huantao Zhu
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引用次数: 0

Abstract

To address the challenges of capturing micro-strains in detecting esophageal motility disorders and the limitations of existing high-resolution manometry and functional intraluminal imaging probes in directly measuring esophageal tissue electrical impedance, this study proposes a novel flexible balloon sensor structure that integrates a piezoelectric film assembly with a distributed impedance electrode array. Using the electrical analysis module in the finite element analysis (FEA) software, simulations of the forward problem for esophageal impedance detection were conducted to optimize the excitation source parameters, and a physical prototype was fabricated. Under a relative excitation mode with a voltage sensitivity of 2.059%, the voltage output characteristics of the impedance electrode array were analyzed during linear changes in the balloon filling volume. Based on the performance variation of the piezoelectric film assembly, 80% was selected as the optimal filling volume. Force-electric coupling tests were conducted on the balloon sensor using a pressure testing platform, revealing that both the piezoelectric film assembly inside the balloon and the impedance electrodes outside the balloon exhibited significant load differentiation characteristics as the force application point shifted. In summary, this balloon sensor facilitates the localization of force application while simultaneously analyzing esophageal tissue properties, offering a novel diagnostic approach and objective tool for esophageal disease detection.

[用于食道力电耦合测量的球囊传感器装置的研制]。
为了解决在检测食管运动障碍时捕捉微应变的挑战,以及现有高分辨率测压仪和功能性腔内成像探针在直接测量食管组织电阻抗方面的局限性,本研究提出了一种新型柔性球囊传感器结构,该结构将压电薄膜组件与分布式阻抗电极阵列集成在一起。利用有限元分析软件中的电分析模块,对食道阻抗检测的正演问题进行仿真,优化激励源参数,并制作物理样机。在电压灵敏度为2.059%的相对激励模式下,分析了气球填充体积线性变化时阻抗电极阵列的电压输出特性。根据压电薄膜组件的性能变化,选择80%的填充体积为最优填充体积。利用压力测试平台对气球传感器进行了力电耦合测试,结果表明,随着施力点的移动,气球内部的压电薄膜组件和气球外部的阻抗电极都表现出明显的负载分化特性。综上所述,该球囊传感器在分析食管组织特性的同时,方便了力施加的定位,为食管疾病检测提供了一种新的诊断方法和客观工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
生物医学工程学杂志
生物医学工程学杂志 Medicine-Medicine (all)
CiteScore
0.80
自引率
0.00%
发文量
4868
期刊介绍:
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