Minimally invasive wireless blood glucose detection system

Abstract

The invention discloses a novel minimally invasive wireless blood sugar detection system. The blood glucose detection system consists of two parts: a MEMS sensor fabricated on a hydrogel basis and a wireless detector. The MEMS sensor is in contact with the body fluid of the human body through the microporous membrane. The blood sugar change in the human body can cause the volume change of the hydrogel on the other side of the porous membrane, thereby pushing the elastic glass membrane to deform. The deformation of the glass membrane further changes the natural frequency of the integrated micro-resonant circuit. The external wireless detector contains a transmitting coil, which can send out a wireless signal of variable frequency. When the frequency of the wireless signal resonates with the frequency of the micro-resonant circuit, the frequency of the resonant circuit can be read out by recording the phase low point of the detector impedance. Different blood glucose values ​​can make the detector obtain different resonant circuit frequencies, and after calibration, the frequency can be directly converted into blood glucose values. The porous membrane between the microelectromechanical system sensor and the human body can be made to have a diameter of less than 0.5 mm, so that the trauma to the human body is minimal, and the purpose of minimally invasive blood sugar detection is achieved.

Description

technical field [0001] The invention relates to the technical field of minimally invasive blood sugar measurement for human body in medical equipment, in particular, the combination of MEMS sensors and wireless detectors achieves the daily blood sugar measurement of diabetics, which can be used in medical institutions and at home. Background technique [0002] Diabetes is one of the four major diseases that endanger human health. It is a chronic disease caused by the relative or absolute lack of insulin in the human body and the decrease in the sensitivity of target cells to insulin. It is a clinical frequently-occurring disease. [0003] In order to avoid the complications of diabetes, diabetic patients need to measure and control blood sugar concentration frequently. At present, there is no way to completely cure diabetes. There are currently two types of blood glucose detectors that are common in the market: electrochemical method and light emission technology. The electr...

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Problems solved by technology

However, the response speed of this hydrogel is proportional to the volume, and a larger volume will result in a slower response speed.

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