| 摘要 |
This invention discloses a syringe protective structure comprising a barrel (1) having a barrel base with an external diameter smaller than the external diameter of a barrel base; an opening with a size smaller than a barrel chamber at the front end of the barrel, a relay base (2) having an external diameter smaller than a base tube and being integrally extended to a tube rim with a larger external diameter and a smaller thickness; a front base pillar and a rear base pillar being disposed at the center and a base stair being formed between the base tube and the base rim; a bracket base (3) having a size corresponding to a base ring of the barrel base with a plurality of hooks bent (31) such that the relay base is disposed proximate to the opening of a barrel chamber, such that the liquid medication injection tube of the liquid medication cylinder is embedded into the rear base pillar hole, and the needle base is coupled to the front pillar base to define a liquid medication passage. After the injection is completed and withdrawn, the relay base together with the needle base are pulled. Therefore, the base rim is dropped under the hooks and the base stair is latched by the hooks into a fixed position.
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