| 摘要 |
A safety syringe includes a block- combined pedestal unit (20) invaginating in the interior of the syringe barrel (10), the block-combined pedestal unit has a sleeve (21) and a sealed part (22) directly formed on the sleeve (22). The sleeve (22) is made of elastic material, it has external diameter portion formed on the external of the sleeve (21) and may hermetically engage the interior wall of the syringe barrel chamber (111), thus the sealed part (22) is airproofly and elastically invaginated in the syringe barrel (10).
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