| 摘要 |
A hypodermic dosage measuring device to be utilized with a hypodermic syringe and a conventional drug vial, the dosage measuring device including a vial holding portion adapted to hold a head of the drug vial non-slidably therein, a syringe holding portion adapted to hold the syringe in a non-slidable position with a needle of the syringe disposed within the drug vial, and a dose adjustment portion, the dose adjustment portion including an elongate plunger holder and gear element, the plunger holder and gear element each including a plurality of teeth thereon such that movement of the gear element results in an elongate track segment of the plunger holder sliding in a longitudinal direction parallel to a length of the syringe. The plunger holder further including a plunger engagement segment extending perpendicularly from a proximal end of the track segment, the plunger engagement section being adapted to engage a plunger of the syringe such that longitudinal movement of the plunger holder results in corresponding longitudinal movement of the plunger of the syringe relative to a dosage holding area of the syringe, the precise dosage measure being indicated by dosage indicating indicia on the dose adjustment portion.
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