Automatic whip-back needle safety self-breaking syringe
An automatic retraction and syringe technology, applied in the field of medical and sanitary products, can solve the problems of troublesome operation, high production cost, difficult production, etc., and achieve the effects of convenient operation, reduced production difficulty, and reduced material cost
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[0032] see Figure 1 to Figure 10 , is the first embodiment of the present invention, a self-retracting needle safety self-destruct syringe, which includes a syringe 1, a push rod barrel 2, a push rod sealing ring 3, a connecting seat 4, a connecting rod with a hook 5. A resilient rubber band 6, a needle seat 7, a needle seat sealing ring 8, and an injection needle 9.
[0033] The syringe 1 includes a hollow body 12 and a nozzle 16 at the bottom of the body 12 .
[0034] A hook groove 122 is defined on a top inner wall of the cylinder body 12 .
[0035] An annular bottom wall 124 extends inwardly from the bottom opening of the cylinder body 12 .
[0036] The nozzle 16 extends downward from the bottom wall 124 of the cylinder 12 .
[0037] The push rod cylinder 2 includes a rod body 22 inserted in the cylinder body 12 , and a fixing portion 24 disposed at the bottom end of the rod body 22 . The interior of the rod body 22 is hollow to form a movement cavity 222 .
[0038]T...
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