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1. 发明授权

US5788673A Drug infusion system 失效
标题翻译：药物输液系统
公开(公告)号：US5788673A
公开(公告)日：1998-08-04
申请号：US461857
申请日：1995-06-05
申请人： Larry Lee Young , Richard Rabenau , Stephen Perry Lisak , Rowland William Kanner
发明人： Larry Lee Young , Richard Rabenau , Stephen Perry Lisak , Rowland William Kanner
IPC分类号： A61M5/145 , A61M37/00
CPC分类号： A61M5/14526 , A61M5/1454 , A61M2005/14513 , A61M5/1456
摘要： A novel fluid infusion system utilizing a fluid pump device and a syringe is used in an intravenous or infusion application of a liquid product, such as a medication, to a patient. The pump device includes a housing that has a compartment for reception of at least a portion of the plunger of the syringe. A drive component is disposed in the compartment and is relatively movable with respect to the housing for engaging and producing movement of the plunger. A fluid medium is contained within the housing and a relatively movable piston is in operative communication with the fluid medium and a biasing structure is provided for biasing the piston in a first direction to impart a force on the fluid medium. A metering orifice is in communication with the fluid medium and through which the medium can pass upon movement of the piston in the first direction to restrict and control the flow of the medium. Valve structure for the fluid medium permits the rapid return movement of the piston in a second direction opposite the first direction. The piston is operatively associated with the drive component, such that the movement of the piston in the first direction is transferred to the drive component with the metering orifice in effect controlling the rate of movement of the piston and the drive component and correspondingly the movement of the plunger thereby controlling the rate of expulsion of the liquid product from the syringe.
摘要翻译：使用流体泵装置和注射器的新型流体输注系统用于向患者静脉内或输注液体产品（例如药物）的应用中。泵装置包括具有用于接收注射器的柱塞的至少一部分的隔室的壳体。驱动部件设置在隔室中并且可相对于壳体相对移动以接合和产生柱塞的运动。流体介质容纳在壳体内，并且相对可移动的活塞与流体介质操作连通，并且提供偏压结构用于沿第一方向偏压活塞以在流体介质上施加力。计量孔口与流体介质连通，介质在活塞沿第一方向移动时能通过该流体介质，以限制和控制介质的流动。用于流体介质的阀结构允许活塞在与第一方向相反的第二方向上快速返回运动。活塞与驱动部件可操作地相关联，使得活塞沿第一方向的移动被传递到驱动部件，而计量孔口实际上控制活塞和驱动部件的移动速度，从而控制液体产物从注射器排出的速度。

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