一种适用于骨肿瘤热疗的光纤光栅测温传感器

为解决骨肿瘤微波热疗时传统电子传感器在微波场环境中无法工作、探针刺入骨膜部位时易折断以及使用寿命短的问题，本文采用光纤光栅测温原理设计了一种测温传感器，该传感系统包括测温探针和光纤光栅多点温度监测仪，采用特殊的一体化结构设计及封装工艺，使探针具有0.5 mm壁厚，提高了传感器整体尤其是探针的机械强度，确保了传感器整体密封性能；采用不锈钢材质加工制作，延长了传感器的使用寿命。实验结果表明，传感器的精度为±0.3 ℃，测温响应时间为5 s。临床应用测试结果表明，该系统分辨率达到0.01 ℃，精度、可靠性高而且抗电磁干扰。

A fiber Bragg grating temperature sensor applicable for bone tumor hyperthermia treatment

We devise an optical fiber grating based temperature sensor for such issues as traditional electronic sensor failing to work in microwave field in bone tumor microwave hyperthermia, a probe apt to fracture when stuck into periosteum and to short life time. It includes a temperature sensing probe and a fiber grating multi point temperature detector. Its special integration structure design and packaging technology and 0.5 mm wall thick probe improve its mechanical strength, especially for its probe. This guarantees its whole sealing performance.Stainless steel material extends its life time.Experimental results show that it has detection accuracy of±0.3 ℃ and temperature response time of 5 s.Clinical application demonstrates that it has high resolution of 0.01 ℃,high accuracy and reliability and strong electromagnetic interference suppression capability.