| 摘要 |
A prefilled, readily activated disposable syringe wherein a fluid medicament is sealed in a syringe barrel by means of a puncturable sealing element. The syringe barrel also accommodates a slidable piercing member which includes a piercing tubular member held out of contact with the puncturable sealing element until it is desired to intermix a second fluid material with the first. The slidable piercing member has a removable cap disposed thereon for sterile thumb contact and engagement means between the slidable member and the sealing element so that the slidable piercing member positively engages and pierces through the puncturable sealing element when it is desired to activate the syringe. A stoppered vial containing the second fluid is also pierced by the piercing tubular member and upon movement of the vial toward the punctured sealing element quick and efficient mixing of the two fluid materials is effected as well as administration of the combined materials.
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