| 摘要 |
<p>Disclosed is a spring-loaded self-destructing syringe, comprising a syringe cylinder (21) connected to a needle seat (13), and a syringe needle (11) connected to a self-destructing part (12), wherein the self-destructing part (12) connected to the syringe needle (11) is placed on the needle seat (13); a rubber stopper (302) and a hollow push cylinder (301) are provided in the syringe cylinder (21); a spring seat (304) in which a spring (306) nests and a stop protrusion (307) are provided in the push cylinder (301); the lower end of the self-destructing part (14) is provided with an agraffe (15); the upper end of the spring seat (304) is provided with a slot (305) able to be clasped by the agraffe (15); a wedged cylinder (314) nests between the push cylinder (301) and the spring seat (304); the top of the wedged cylinder (314) is nested in the rubber stopper (302); and in the depressed state, one end of the spring (306) pushes back against the bottom of the wedged cylinder (314). The syringe structure is simple, ingenious and very reliable; after the task of injection is complete, the syringe needle (11) can be smoothly drawn into the push cylinder (301).</p> |
