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    • 1. 发明授权
    • A DISPENSING APPARATUS
    • 分配装置
    • EP1667801B1
    • 2009-08-19
    • EP04768337.0
    • 2004-09-06
    • Consort Medical Plc
    • WRIGHT, Andrew, David
    • B05B11/00
    • B05B11/307B05B11/3025B05B11/304
    • A hand-held multi-dose dispensing apparatus (10) comprising a metering chamber (20) having an axis (21), an end portion (22) at one axial end of the chamber (20) and a side body portion (23) extending from the axial end portion (22), a piston arrangement (30) movable with a piston stroke along the axis of the metering chamber (20) with a seal portion (34) of the piston arrangement (30) being slidably engageable with an inside surface of a side portion (23) of the metering chamber, an inlet (27) for fluid to enter the metering chamber (20), and an outlet (31, 32) for fluid to be dispensed from the metering chamber (20), wherein the inlet (27) is provided on the side body portion (23) of the metering chamber and, in use, during a first portion of the piston stroke, the inlet (27) is in fluid communication with the metering chamber (20) and during a second portion of the piston stroke, the seal portion (34) of the piston arrangement (30) blocks the inlet (27) preventing fluid from passing from the inlet (27) into the metering chamber (20). This dispensing apparatus (10) reduces variations in the shot weight dispensed, by the metering of the fluid commencing at the point at which the piston enters the second portion of its stroke blocking off the inlet.
    • 一种手持式多剂量分配装置(10),其包括具有轴线(21),腔室(20)的一个轴向端部处的端部(22)和侧体部分(23)的计量腔室(20) (30)的密封部分(34)沿着计量腔室(20)的轴线以活塞冲程可移动的活塞装置(30),所述活塞装置(30)能够与轴向端部分 用于流体进入计量腔室(20)的入口(27)以及用于从计量腔室(20)分配的流体的出口(31,32),所述计量腔室的侧面部分(23) ,其中入口(27)设置在计量腔室的侧面主体部分(23)上,并且在使用中,在活塞行程的第一部分期间,入口(27)与计量腔室(20)流体连通 )并且在活塞冲程的第二部分期间,活塞装置(30)的密封部分(34)阻塞入口(27)以防止流体通过 从入口(27)进入计量室(20)。 该分配装置(10)通过在活塞进入其行程的第二部分的位置开始堵塞入口的开始,通过计量流体来减少喷射重量的分配变化。