Be humble where you can see, and hold the border where you can't see. This design solves the pain point of heavy volume and inconvenient holding of the traditional infusion detector through the affinity shape of the rounded corner stretching body and the ergonomic optimization of the back slope. In terms of function, gyroscope detection is used instead of traditional photoelectric detection, which improves the compatibility of various infusion tube materials. The physical locking after detection is realized through the back clamping mechanism, and the "monitoring" closed loop is upgraded to the double safety mechanism of "monitoring intervention. The overall black and white color matching is supplemented by green finishing, which not only meets the professional seriousness of the medical environment, but also improves the efficiency and safety of human-computer interaction through color guidance.