Sticker type sweat sensor with sweat collecting structure

Abstract

The invention provides a sticker type sweat sensor with a sweat collecting structure and relates to a sweat sensor. The invention aims at solving the evaporation and pollution problems of sweat samples of existing sweat sensors. The sticker type sweat sensor consists of a sweat collecting layer and a waterproof protecting film layer, wherein a plurality of microfluid channels communicating with amicro-cavity are radially formed in the periphery of the micro-cavity in the center of the upper surface of the sweat collecting layer, and capillary pores penetrating through the sweat collecting layer are formed in the bottoms of grooves of the microfluid channels; and a detecting electrode is arranged in the center of the micro-cavity, and a selective sense film is arranged on the upper surfaceof a working electrode in the detecting electrode. The sticker type sweat sensor sticks to the surface of skin in use, and the sweat is advantageously collected, conveyed and enriched by virtue of the capillary pores, the microfluid channels and the micro-cavity through a capillary phenomenon, so that the sample amount required by detection is little; and evaporation and pollution of a sweat sample can be effectively avoided by virtue of the waterproof protecting film layer. The sticker type sweat sensor has the advantages of flexibility, instantaneity, wearability and easiness in integrationand non-invasive detection.

Description

technical field [0001] The invention relates to a sweat sensor. Background technique [0002] With the rapid development of the field of flexible smart wearable sensing, home-based medical diagnosis has gradually entered our lives. Many wearable devices such as smart clothing, smart patches, and electronic tattoos are committed to achieving efficient and real-time human health. manage. Compared with physical signals such as heartbeat and breathing, the complex biomolecular information contained in sweat is closely related to human health. At the same time, sweat has become a potential development target of human biochemical sensors because of its advantages such as continuous secretion, non-invasive collection and stable microenvironment. [0003] Generally, the analysis of sweat components is mostly large-scale analysis equipment. Large-scale analysis equipment is not only bulky, but also expensive and cannot be worn. The rise of sweat sensors has made it possible for wea...

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Problems solved by technology

[0004] In order to solve the problem of evaporation and pollution of sweat samples in the existing sweat sensor, the present invention proposes a sticker-type sweat sensor with a sweat collection structure

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