| 摘要 |
A syringe having a sealed member at one end and in which a hypodermic needle is mounted by a collapsible hub with the rearward end of the needle terminating a short distance in advance of the sealing member means for guiding the collapsible hub and needle for axial movement in the direction for displacement of the needle in the direction for piercing the sealing member, means for retaining the collapsible hub in needle piercing position and means for removing a cover from the needle to expose the needle while in needle piercing position.
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