Medical miniature fiber grating temperature sensing probe encapsulated with glass

He TIAN; Tian-ting CHEN; Yan BAI; Tao WANG; Zi-yin CHEN

doi:10.3788/OPE.20172512.3105

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Medical miniature fiber grating temperature sensing probe encapsulated with glass

Modern Applied Optics | 更新时间：2020-07-07

- Medical miniature fiber grating temperature sensing probe encapsulated with glass
- Optics and Precision Engineering Vol. 25, Issue 12, Pages: 3105-3110(2017)
- 作者机构：
  
  1.东北林业大学理学院, 黑龙江哈尔滨 150040
  2.东北林业大学机电工程学院, 黑龙江哈尔滨 150040
  3.哈尔滨医科大学附属第一医院综合癌症中心, 黑龙江哈尔滨 150001
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172512.3105
  CLC： TN253;TH773
- Received：28 April 2017，
  
  Accepted：10 August 2017，
  
  Published：25 December 2017
- 稿件说明：
移动端阅览
He TIAN, Tian-ting CHEN, Yan BAI, et al. Medical miniature fiber grating temperature sensing probe encapsulated with glass[J]. Optics and precision engineering, 2017, 25(12): 3105-3110.
DOI：

He TIAN, Tian-ting CHEN, Yan BAI, et al. Medical miniature fiber grating temperature sensing probe encapsulated with glass[J]. Optics and precision engineering, 2017, 25(12): 3105-3110. DOI： 10.3788/OPE.20172512.3105.

摘要

针对体内测温、特别是肿瘤热疗体内温度实时监测对温度传感探头的体积、韧性和抗电磁干扰能力的要求，对医用小型光纤光栅温度传感探头进行了研究。提出了利用玻璃管封装短光纤布拉格光栅来有效避免应力引起的误差以及金属封装对电磁场分布的影响，同时提出用医用聚氨酯套管包裹探头及光纤来有效地保护探头及光纤并使其具备很好的韧性。封装后，探头截面直径为1 mm、长度约为4 mm。实验测量了稳定温度源在不同温度下探头的反射波长响应和温度变化时探头的响应时间，并测量了医用热疗机加热猪肉时肉内部的温度变化过程。结果表明，体温范围内探头反射波长与温度的线性相关系数可达0.999 95，温度传感精度为0.2℃，探头最大响应时间约为4 s，并能实时监测医用热疗机加热猪肉时其内部的温度变化。

Abstract

For body inner temperature measurement

especially for tumor hyperthermia temperature real-time monitoring

temperature sensing probes should have smaller volume

good toughness and resistance to electromagnetic interference ability. This paper focuses on a medical small optical fiber grating temperature sensing probe. The glass tube was used to encapsulate short fiber Bragg gratings to allow the probes to effectively avoid the error caused by stress and to eliminate the influence of metal packages on the distribution of electromagnetic field. Meanwhile

the probe and fiber were wrapped in medical polyurethane sleeve to effectively protect the probe and fiber and make them be good toughness. After packaging

the cross-section diameter and the length of the probe are 1 mm and about 4 mm

respectively. The reflection wavelengths of the probe at different temperatures

the response time of the probe at changed temperature and the internal temperature change process of the pork heated by the medical radiofrequency hyperthermia machine were measured experimentally. The results show that the linear correlation coefficient between the reflection wavelength of the probe and the temperature is 0.999 95 in the body temperature range. The temperature sensing accuracy and the maximum response time of the probe is 0.2℃ and about 4 s

respectively. Moreover

the probe can be used to monitor the internal temperature change of the pork heated by the medical radiofrequency hyperthermia machine in real-time.

关键词

Keywords

references

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