Biosensor

Abstract

The invention discloses a biosensor. The biosensor includes a sensor body, wherein the sensor body includes a plurality of physical surfaces, each physical surface is provided with at least one functional electrode, and the physical surface further includes a non-sensing area; and the non-sensing area of at least one of the physical surface is further provided with the other functional electrode,each of the functional electrodes is provided with a corresponding signal conducting area, and each of the functional electrodes is connected with the corresponding signal conducting area. According to the biosensor, since the multiple functional electrodes are distributed on the multiple physical surfaces of the sensor, the length of the sensor can be shortened effectively through the design on the premise of the same sensing area of the sensor; and when the biosensor is compared with a sensor with electrodes which are arranged on one side of the sensor, the length can be shortened by 50% through the design under ideal conditions, and meanwhile the test precision of the sensor can be improved further, so that the problem of contradiction between the test precision and wearing experience of an existing sensor is solved.

Description

technical field [0001] The invention relates to a biosensor, in particular to a biosensor with a multi-electrode structure. Background technique [0002] Biosensors are sensors used to detect corresponding organic or inorganic molecules in body fluids. Biosensors selectively recognize biomolecules, and then the biomolecules and sensors are converted into corresponding current or voltage signals. The concentration and conversion of the substance The strength of the signal has a corresponding mathematical relationship, and the mathematical relationship of strong correlation can be established by mathematical methods, and then the concentration of the substance can be calculated through the size of the signal. [0003] Biosensors are mainly used to detect the physiological indicators of the human body. According to the different physiological indicators detected, the sensors are mainly current-sensing and voltage-sensing. No matter what kind of sensor, its functional compositio...

AI Technical Summary

Problems solved by technology

[0005] Due to the limitation of the chemical induction coating, the existing biosensors can only be processed into single-sided electrodes. The consequence of this is that when the electrodes are working, in order to meet the requirements of the electrode induction signal, the effective sensing area of ​​the sensor needs to reach a certain value.

However, considering the wearing experience of bio-sensing, the smaller the area, the better the wearing experience, so there is a conflict between wearing experience and detection accuracy

Most of the existing sensors are looking for a balance between detection accuracy and wearing experience. There is no way to achieve a good experience or even a senseless wearing while having high-precision sensing capabilities.

On the other hand, the larger the number of sensor electrodes, the larger the size of the sensor will be, and the longer the sensor will bring certain difficulties to the sensor implantation.

[0006] At present, glucose biosensors are widely used in clinical practice. Glucose testing is usually divided into two types: in vitro and in vivo. Among them, the common blood glucose test strips are used for in vitro testing. Currently, several manufacturers have different solutions for in vivo testing, but without exception. Both need to implant the sensor under the skin or in the interstitial fluid layer

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