Disposable self-destructed syringe
A syringe and self-destruction technology, which is applied in the field of single-use self-destruction syringes, can solve the problems of inability to exhaust air and inconvenient operation by medical staff, and achieve the effects of reducing residual amount and being reliable and convenient to use.
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[0017] Below in conjunction with accompanying drawing and embodiment the present invention is further described:
[0018] Referring to the accompanying drawings, the present invention includes a needle point 1, a cylinder body 2, a core rod 3, a non-return member 7 and a sealing plug 10, and the core rod 3 is provided with a ratchet groove 4, a return limiting step 5, and a mounting hole 6 and the repeated movement part 11 (respectively see Fig. 1, Fig. 2, Fig. 3), the non-return member 7 is provided with non-return stabs 8 and ratchets 9, and the non-return member 7 enters the return-limiting step 5 through the installation hole 6 during assembly, There are ratchets 9 against the back-limiting step 5, and then the sealing plug 10 is pushed into the bottom of the cylindrical body 2. (see accompanying drawing 1, figure 2).
[0019] When in use, the core rod 3 is drawn back to extract part of the liquid medicine, but the non-return member 7 cannot enter the ratchet groove 4, an...
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