| 摘要 |
Apparatus for withdrawing medicine from a vial with a needle penetrable to gasket. The apparatus snap fits on top of the vial. Inner walls of the apparatus chassis are connected at their base to the lower end of a cylindrical hollow adapter, a cylindrical hollow holds the ferrule with a sharp lance at the bottom is slidable within the hollow ferrule from a recessed position to a forward position to penetrate the vial gasket. A lance at the lower end of the ferrule penetrates the gasket only when a syringe, without a needle, is screwed on the adapter end and driving the ferrule lance through the gasket to establish flow communication with the syringe. A cap with a window for determining if the device has been used previously is provided.
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