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    • 2. 发明授权
    • IMPROVEMENTS RELATING TO INJECTION DEVICES
    • 有关注射装置的改进
    • EP0693946B1
    • 2001-05-16
    • EP94910471.5
    • 1994-03-24
    • OWEN MUMFORD LIMITED
    • MARSHALL, JeremyCROSSMAN, David Danvers
    • A61M5/20
    • A61M5/3202A61M5/2033A61M5/3204A61M5/326A61M5/46A61M2005/2013A61M2005/206A61M2005/2073A61M2005/208A61M2210/167
    • An injection device holds a syringe in the form of a capsule (4, 35) having a needle (5, 36) projecting from its forward end and a plunger (15, 34) extending from its rear end. The rear end (3, 53) of the plunger is received in a drive member (8, 32) which, when released, is urged forwards by a coil spring (12; 66, 69), this projecting the needle (5, 36) and then expressing the dose. The drive member (8, 32) is held captive in its rearward primed position by a detent (6, 59) provided by the body (1, 31) of the device. A sleeve (2, 61) covering a substantial part of the body (1, 31) can shift longitudinally of it from an initial rearward position to a forward position in which it either disengages the drive member (8) from the detent (6) or in which a trigger (55) is freed for actuation to release the drive member (32). Initially the drive member (8, 32) and the coil spring (12; 66, 69) are telescoped together, with the spring acting against the rear end (3, 53) of the body (1, 31) and the drive member (8, 32) being held at its forward end.
    • 注射装置保持具有从其前端突出的针(5,36)和从其后端延伸的柱塞(15,34)的胶囊(4,35)形式的注射器。 柱塞的后端(3,53)容纳在驱动构件(8,32)中,该驱动构件在被释放时被螺旋弹簧(12; 66,69)向前推动,这使针(5,36 )然后表达剂量。 驱动构件(8,32)通过由装置的主体(1,31)提供的制动器(6,59)保持在其向后致动位置。 覆盖主体(1,31)的主要部分的套筒(2,61)可以从其初始后向位置纵向移动到向前位置,在该向前位置中,驱动构件(8)与制动器(6)脱离接合, 或其中触发器(55)释放以致动以释放驱动构件(32)。 首先,驱动构件(8,32)和螺旋弹簧(12; 66,69)一起套叠,其中弹簧抵靠主体(1,31)的后端(3,53)和驱动构件 8,32)保持在其前端。