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1. 发明授权

US3976068A Drug dispenser for use with intravenous feeding pump 失效
标题翻译：药物分配器用于静脉输液泵
公开(公告)号：US3976068A
公开(公告)日：1976-08-24
申请号：US538372
申请日：1975-01-03
申请人： Ingemar H. Lundquist
发明人： Ingemar H. Lundquist
IPC分类号： A61M5/14
CPC分类号： A61M5/1409
摘要： This invention relates to a drug dispensing capsule in which the drug may be first mixed with a predetermined quantity of parenteral fluid (the solution to be administered to the patient). It is adapted to be used at the discharge end of an intravenous feeding pump and will automatically switch over to the parenteral fluid as soon as the drug dosage has been dispensed. The device comprises a cylindrical chamber somewhat of the nature of an enlarged hypodermic syringe. It has an inlet at one end and an outlet at the other. A piston-like fluid separator is slidably mounted on the interior of said cylindrical chamber. The drug mixture to be administered is placed in the chamber between the piston and the discharge end of the chamber. The capsule is placed in the pumping system at the discharge end of the pump, the outlet from the device being connected to the tube to the needle inserted in the blood vessel of a patient. When the pump is operated, it pushes the piston axially in the cylinder thereby forcing the drug dosage out of the outlet end of the chamber and into the patient. When the piston reaches the end of the cylinder, the seal between the piston and the wall of the chamber is automatically broken, as by means of ridges projecting inwardly from the wall of the chamber, or by cavities formed in the wall thereof. Means is provided for exhausting air from the chamber, both when the parenteral fluid is introduced into the chamber and when a capsule with its premeasured dosage is placed in the system.
摘要翻译：本发明涉及一种药物分配胶囊，其中药物可以首先与预定量的胃肠外液体（待给予患者的溶液）混合。它适用于静脉输液泵的排出端，并且一旦药物剂量分配就会自动切换到胃肠外液体。该装置包括一些具有扩大的皮下注射器性质的圆柱形腔室。它的一端有一个入口，另一端有一个出口。活塞式流体分离器可滑动地安装在所述圆柱形室的内部。将要施用的药物混合物置于活塞和腔室的排出端之间的室中。将胶囊放置在泵的排出端处的泵送系统中，从装置的出口连接到插入患者血管中的针管。当泵被操作时，其将活塞在气缸中轴向推动，从而迫使药物剂量离开腔室的出口端并进入患者体内。当活塞到达气缸的端部时，活塞与腔室壁之间的密封将自动地破裂，如通过从腔室的壁向内突出的脊部或通过其壁壁形成的空腔而被破坏的。当肠胃外流体被引入腔室中时以及当具有其测量剂量的胶囊被放置在系统中时，提供用于从腔室排出空气的装置。

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