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首页> 外文会议>European workshop on optical fibre sensors >Highly sensitive contact pressure measurements using FBG patch in endotracheal tube cuff
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Highly sensitive contact pressure measurements using FBG patch in endotracheal tube cuff

机译：使用气管插管袖套中的FBG贴片进行高度灵敏的接触压力测量

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A method for measuring the contact pressure between an endotracheal tube cuff and the trachea was designed and developed by using a fibre Bragg grating (FBG) based optical fibre sensor. The FBG sensor is encased in an epoxy based UV-cured cuboid patch and transduces the transversely loaded pressure into an axial strain that induces wavelength shift of the Bragg reflection. The polymer patch was created by using a PTFE based mould and increases tensile strength and sensitivity of the bare fibre FBG to pressure to 2.10×10-2 nm/kPa. The characteristics of the FBG patch allow for continuous measurement of contact pressure. The measurement of contact pressure was demonstrated by the use of a 3D printed model of a human trachea. The influence of temperature on the measurements is reduced significantly by the use of a second FBG sensor patch that is not in contact with the trachea. Intracuff pressure measurements performed using a commercial manometer agreed well with the FBG contact pressure measurements.
机译：通过使用基于光纤布拉格光栅（FBG）的光纤传感器，设计和开发了一种用于测量气管内导管套囊与气管之间接触压力的方法。 FBG传感器被封装在基于环氧树脂的紫外线固化的长方体贴片中，并将横向加载的压力转换为轴向应变，从而引起布拉格反射的波长偏移。通过使用基于PTFE的模具制作聚合物贴片，并将裸纤维FBG的拉伸强度和敏感度提高到2.10×10-2 nm / kPa。 FBG贴片的特性允许连续测量接触压力。接触压力的测量通过使用人类气管的3D打印模型进行了演示。通过使用不与气管不接触的第二个FBG传感器贴片，可以大大降低温度对测量的影响。使用商用压力计进行的袖带内压力测量与FBG接触压力测量非常吻合。

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