复合式氧传感器的研制及腧穴氧分压测定研究

Complex Oxygen Transducer and Experimental Research for Oxygen Partial Pressure on Acupoint

关键词:  复合式  传感器  针型  氧分压  腧穴

Key words:  Complex transducer  needle-type  partial pressure of oxygen  acupoint

摘要:

[目的]研制可用于在体测定氧分压的针型传感器。[方法]以惰性金属为敏感膜制作指示电极,将指示电极和参比电极组装在一个注射针内复合成微型针式传感器,为全固态,针尖小到0.35mm,其灵敏度为0.1kPa,线性范围0.1～20kPa,研制了四通道氧分压测试仪,其极化电压可以在-0.4～-0.9V范围调节,测量范围为0～20kPa,精度为0.01kPa。[结果]经离体与在体测试证明,复合式氧传感器可以实现连续在体、动态实时监测活体组织深部的氧分压,及时准确反映活体氧分压的动态变化。[结论]复合式氧传感器可以在体连续、实时监测活体组织深部的氧分压。

Abstract:

[Objective] To work out a transducer of needle-type for the measurement of the oxygen partial pressure in vivo.[Methods] The indicatingr electrode was made with the inert metal as the sensitive membrane. It was installed in a syringe needle with a reference electrode together to establish a complex needle-type transducer. It was in solid state with the diameter of needle tip of 0.35 mm,sensitivity 0.1 kPa,and linearity range 0.1～20 kPa. The detector of oxygen partial pressure with four channels was then manufactured with the polarization voltage -0.4～-0.9 v,measurement range 0～20 kPa,sensitivity 0.01 kPa.[Results] The experiment in vitro and in vivo demonstrated that the transducer could measure the oxygen partial pressure of tissue in vivo continually and dynamically and show the changes accurately on time.[Conclusion] The complex oxygen transducer can monitor the oxygen partial pressure of tissue in vivo continually.