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一种便携型电磁感应式凝血测试传感器

2019-10-21李晓王春伟于源华

科技风 2019年5期

李晓 王春伟 于源华

摘 要: 近年来,随着心血管疾病增多,需要对患者测凝血状况。为了减轻复杂程序给医疗保健者带来的负担并实现对患者的病情进行连续动态、定性和定量的观察,本文设计了一种基于电磁感应式凝血测试便携式传感器。根据法拉第电磁感应定律和诺曼公式,设计电磁感应线圈,利用电磁感应法驱动血液中的机械探头进行周期性振动。通过与市面上存在传感器的进行相关性对比,其相关性达到了0.996,表明传感器可以满足临床上精度的要求,具有相对稳定的工作特性,达到了传感器结构设计的目的,具有结构简单,成本低,高灵敏、抗疲劳等优点,具有巨大经济效益与市场竞争力。

关键词: 电磁感应;传感器;电磁感应线圈

Abstract: In recent years,with the increase of cardiovascular diseases,it is necessary to measure coagulation status in patients.In order to reduce the burden of complex procedures on health care providers and achieve continuous dynamic,qualitative and quantitative observation of the patient's condition,this article designed a portable sensor based on electromagnetic induction coagulation test.According to Faraday's law of electromagnetic induction and Norman's formula,an electromagnetic induction coil is designed and a mechanical probe in blood is driven by electromagnetic induction method to perform periodic vibration.By correlating with the presence of sensors on the market,the correlation reached 0.996,indicating that the sensor can meet the requirements of clinical precision,has relatively stable working characteristics,has achieved the purpose of sensor structural design,has a simple structure,and has a low cost.,High sensitivity,anti-fatigue and other advantages,with huge economic benefits and market competitiveness.

Key words: Electromagnetic induction;sensor;Electromagnetic induction coil

凝血檢测是临床非常重要的检验项目。近年来,随着心机梗死、冠心病、脑血栓等心血管疾病增多,需要对患者测凝血状况。一般情况下,患者需要定期到医院或中心实验室进行凝血试验。这样的程序给医疗保健提供者带来了很大的负担,并且增加了测试的返回时间和成本。此外,在ICU病房,必须对患者的病情进行连续动态、定性和定量的观察,全方位观测凝血过程,为临床合理用药提供参考。为了缓解这些问题,临床上急需一种新型的快速、直观、全面的凝血检测技术。目前,临床用于体外凝血检测的方法主要以光学法[1]和粘度法为主,由于光学法易受外界环境因素的干扰,所以检测反应体系粘度变化成为体外凝血检测与血液疾病诊断的发展趋势。……

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