| 摘要 |
A combination cap and stopper for sealing a substance within a syringe whether the needle remains on the syringe or is removed, consisting of a rubber or plastic device having a generally cylindrical portion and a portion having a generally frustoconical shape. The cylindrical portion has a frustoconical axial bore therein with an axially extending groove formed in the frustoconical wall and at the bottom end of the bore a plug-like cylindrical protrusion. The portion of generally frustoconical shape being solid and having a raised target on its base so as to aid in proper insertion of a cannula.
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