用纯纺织品监测外科伤口,测量伤口垫- iii:通过测量伤口渗出来检测出血或血肿排出

H. Pötzschke, K. Zirk
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引用次数: 0

摘要

为了实现纯纺织品的最终通用传感器设计,测量伤口垫,用于监测手术提供的伤口的组织温度,水分释放和拉伸(作为最突出的伤口愈合中断细菌炎症,出血/血肿排放和血肿/血肿形成的指标),本研究的目的是识别和量化系统研究中影响水检测的可能变量。纺织品传感器包括缝在纺织品衬底上的绝缘电线,平行电线形成平面传感器结构,其电容因纺织品中的水(包含在血液或淋巴中)而增加。由于这种结构可以测量所有感兴趣的参数,因此只检查形成双曲线的平行传感器导线。令人惊讶的是,结果是复杂的,既不简单也不一致。标准化加水后电容(测量信号)的变化不是相加的,即与传感器阵列的受水面积无关,而是与传感器导线直径呈负相关,与较小的拼接间距(沿着传感器导线的拼接环)有轻微的相关性。传感器线间距中等时测量信号最大,拼接间距较小时信号明显。毫无例外,与较大的缝合间距相比,较小的缝合间距系统地提高了测量信号。结果表明,电容式纺织品传感器的优化设计不能通过计算来实现,而必须通过经验来实现。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Monitoring of Surgical Wounds with Purely Textile, Measuring Wound Pads—III: Detection of Bleeding or Seroma Discharge by the Measurement of Wound Weeping
To enable stating a final common sensor design of purely textile, measuring wound pads for the monitoring of surgically provided wounds with regard to tissue temperature, moisture release and stretching (as indicators for the most prominent wound healing disruptions bacterial inflammation, bleeding/seroma discharge, and haematoma/seroma formation), the aim of this investigation was to identify and quantify possible variables practically affecting the detection of water in a systematic study. The textile sensors comprise insulated electrical wires stitched onto a textile backing and parallel wires form a plane sensor structure whose electrical capacitance is increased by water (contained in blood or lymph) in the textiles. Only parallel sensor wires forming double meanders were examined because this structure enables all the parameters of interest to be measured. Surprisingly the results are complex, neither simple nor consistent. The change in electrical capacitance (measuring signal) upon the standardized addition of water was not additive, i.e., it was not found to be correlated to the moistened area of the sensor array, but inversely correlated to the diameter of the sensor wire, mildly pronounced in connection with smaller stitching spacing (stitching loops along the sensor wires). The measuring signal reached a maximum with medium sensor wire spacings and pronounced with a smaller stitching spacing. Without exception, the measuring signal was systematically higher in connection with smaller (compared with larger) stitching spacings. The results presented indicate that the optimization of the capacitive textile sensors cannot be calculated but must instead be carried out empirically.
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