Embedded anti-pollution injector
An anti-pollution syringe, built-in technology, applied in the field of syringes, can solve the problems of insufficient sealing, insufficient contact between the air filter and the groove, etc., to achieve convenient suction or injection of liquid medicine, ensure sealing performance, and filter Effect of effect improvement
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Embodiment 1
[0018] refer to figure 1 and figure 2 As shown, a built-in anti-pollution syringe of the present invention includes a syringe 1, a wing plate 1a arranged at the rear end of the syringe 1, a piston 2 arranged in the syringe 1, and a columnar pusher arranged at the rear end of the piston 2. Rod 3, the guide cover plate 1b arranged at the rear end of the syringe 1, the guide cover plate 1b is formed by the inward extension of the wing plate 1a, the wing plate 1a and the guide cover plate 1b are threadedly connected with the syringe 1, and the columnar push The rod 3 extends to the outside of the syringe 1 through the guide cover 1b, and a groove 4 communicating with the inner cavity of the syringe 1 is provided on the guide cover 1b, and an air filter 5 is arranged in the groove 4, and the air filter 5. Molecular membrane filters commonly used in the prior art can be used. This type of filter can pass through the air to prevent macromolecules such as bacteria and viruses from p...
Embodiment 2
[0020] refer to image 3 and Figure 4 As shown, a built-in anti-pollution syringe of the present invention has basically the same structure as Embodiment 1, except that at least one annular groove 4a is provided on the inner wall of the groove 4 on the side of the air filter 5 , the number of annular grooves 4a in this embodiment is two, and the number of annular grooves 4a can be increased or decreased according to specific conditions; the sealing ring 6 is arranged in the annular grooves 4a. Its use effect is basically the same as embodiment 1.
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