| 摘要 |
<p>A disposble rectractable-needle syringe comprises a cylindric body including a first end for engaging therein a piston element and a second end having an attachmen for a needle assembly. The piston element comprises latching means for latching the needle assembly and allowing the needle to be introduced into the cylindric body upon ending the injection operation, by operating the piston element. The latching means comprise one end of the gasket applied to the piston, designed for receiving hook means included in the needle assembly.</p> |
