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    • 4. 发明授权
    • Pressure injector apparatus having improved trigger mechanism
    • 具有改进的触发机构的压力注射器装置
    • US3933155A
    • 1976-01-20
    • US543438
    • 1975-01-23
    • Charles Johnston
    • Charles Johnston
    • A61M5/30
    • A61M5/30
    • The present invention relates to a pressure injection mechanism of the type which, when triggered, expresses predetermined dosages of liquid under high pressure from a dosage orifice at speeds enabling the same to penetrate an injection site which may be the skin of a human or an animal, the stalk or other surface of a plant and so forth. The apparatus is characterized by a novel triggering mechanism which assures that the apparatus may be triggered to effect a dosage administering cycle only when the dosage orifice is positioned against the injection site with a predetermined orientation. Furthermore, the triggering device, by preventing triggering unless proper orientation is achieved, enables the provision of a multiple dosage uniit wherein two or more dosages may be simultaneously administered into the same or different injection sites, administration of the dosages by triggering of the mechanism being possible only if both of the injection sites are in proper dosage receiving relationship to the apparatus.
    • 本发明涉及一种压力注射机构,其在被触发时在高压下从剂量孔口表达预定剂量的液体,速度使其能够穿透可能是人或动物皮肤的注射部位 ,植物的茎或其他表面等等。 该装置的特征在于一种新颖的触发机制,其确保仅当剂量孔口以预定取向定位在注射部位时才能触发该装置来实现剂量施用周期。 此外,触发装置通过防止触发,除非实现正确的取向,使得能够提供多剂量单位,其中两个或更多个剂量可以同时施用于相同或不同的注射部位,通过触发机制来施用剂量 只有当两个注射部位处于与装置的适当剂量接收关系时才有可能。