Reusable infusion sensing device with light shielding function

The reusable infusion sensing device with the light shielding function comprises a bag body and further comprises a light shielding mechanism retaining ring, a light shielding mechanism is installed on the outer side wall of the bag body, and the light shielding mechanism is composed of a light shielding film, an outer thread pipe, an inner thread sleeve, an elastic light shielding sleeve bag, a vertical groove A and a vertical groove B in a combined mode. A shading film adheres to the outer side wall of the bag body, an external thread pipe adheres to the outer side wall of the bag body, the outer side wall of the external thread pipe is in threaded connection with an internal thread sleeve, an elastic shading sleeve bag adheres to the outer side wall of the internal thread sleeve, and a vertical groove A is formed in the outer side wall of the elastic shading sleeve bag. And a vertical groove B is formed in the outer side wall of the elastic shading sleeve bag. Through the shading mechanism and the alarm me