基于光纤布拉格光栅的具有温度补偿功能的新型心脏消融导管远端接触力感应。
A Novel Catheter Distal Contact Force Sensing for Cardiac Ablation Based on Fiber Bragg Grating with Temperature Compensation.
机构信息
School of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China.
Opto-Electronic Engineering and Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
出版信息
Sensors (Basel). 2023 Mar 6;23(5):2866. doi: 10.3390/s23052866.
OBJECTIVE
To accurately achieve distal contact force, a novel temperature-compensated sensor is developed and integrated into an atrial fibrillation (AF) ablation catheter.
METHODS
A dual elastomer-based dual FBGs structure is used to differentiate the strain on the two FBGs to achieve temperature compensation, and the design is optimized and validated by finite element simulation.
RESULTS
The designed sensor has a sensitivity of 90.5 pm/N, resolution of 0.01 N, and root-mean-square error (RMSE) of 0.02 N and 0.04 N for dynamic force loading and temperature compensation, respectively, and can stably measure distal contact forces with temperature disturbances.
CONCLUSION
Due to the advantages, i.e., simple structure, easy assembly, low cost, and good robustness, the proposed sensor is suitable for industrial mass production.
目的
为了精确实现远端接触力，我们研发并整合了一种新型的温度补偿传感器到房颤消融导管中。
方法
采用双弹性体双光纤布拉格光栅（FBG）结构来区分两个 FBG 上的应变，以实现温度补偿，通过有限元仿真对设计进行了优化和验证。
结果
设计的传感器具有 90.5 pm/N 的灵敏度、0.01 N 的分辨率，在动态力加载和温度补偿时的均方根误差（RMSE）分别为 0.02 N 和 0.04 N，并且可以在存在温度干扰的情况下稳定测量远端接触力。
结论
由于该传感器具有结构简单、组装容易、成本低、鲁棒性好等优点，因此非常适合工业批量生产。
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