Sensor for sensing contents of components to be measured in human tissue fluid, fluid channel unit and method for measuring contents of components to be measured in human tissue fluid

Abstract

The invention provides a sensor for sensing contents of components to be measured in human tissue fluid, which comprises a micro cantilever beam sensing unit. The micro cantilever beam sensing unit comprises a first substrate, a micro cantilever beam which is parallel to the first substrate and one end of the micro cantilever beam is supported on the first substrate, a gold film formed on at least one lateral surface of the micro cantilever beam, a protein layer formed on the gold film and used for adsorbing glucose molecules in the human tissue fluid on the surface of the protein layer, a driving electrode arranged on the first substrate, a micro cantilever beam electrode formed on the position where the first substrate supports the micro cantilever beam and used for combining the driving electrode to drive the micro cantilever beam to resonate along the direction vertical to the first substrate, and a measuring electrode arranged on the first substrate and used for combining the micro cantilever beam electrode to measure the resonance frequency of the micro cantilever beam. The invention also provides a fluid channel unit, a sensor system and a method for measuring the contents of the components to be measured in the human tissue fluid.

Description

technical field [0001] The invention relates to a sensing system for detecting the content of components to be measured in tissue fluid of a human body. More specifically, the present invention relates to a resonant micro-cantilever sensor for detecting the concentration (or content) of a component to be measured such as glucose in human tissue fluid, a fluid channel unit used with this sensor, A detection method for detecting the concentration (or content) of components to be measured such as glucose in human tissue fluid by using the sensor and a fluid channel unit, and a sensor for sensing the content of components to be measured such as glucose in human tissue fluid system. Background technique [0002] Diabetes is a common and frequently-occurring disease among middle-aged and elderly people. With the improvement of people's living standards, the incidence of diabetes is also increasing. The World Health Organization lists it as one of the three most difficult diseases...

AI Technical Summary

Problems solved by technology

[0006] However, since human tissue fluid contains a variety of chemical substances and trace components, how to selectively and accurately detect trace glucose in tissue fluid is the key to minimally invasive detection methods. At the same time, the dynamic and continuous detection of human glucose concentration requires patients to carry minimally invasive detection devices in real time. , so the minimally invasive detection device must be miniaturized

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