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    • 20. 发明申请
    • IMPROVED HYPODERMIC NEEDLE AND FLUID INJECTION DEVICE
    • 改进的氢氟酸针和流体注射装置
    • WO2002058768A1
    • 2002-08-01
    • PCT/GB2002/000048
    • 2002-01-04
    • UNIVERSITY OF DUNDEECUSCHIERI, AlfredFRANK, Timothy, GrahamXU, Wei
    • CUSCHIERI, AlfredFRANK, Timothy, GrahamXU, Wei
    • A61M5/32
    • A61M25/0084A61M2025/0086
    • The invention relates to an improved hypodermic needle and to a fluid injection device. In one embodiment, a hypodermic needle (10) is disclosed, and a fluid injection device comprises the hypodermic needle (10) and driving means coupled to the needle (10). The hypodermic needle (10) itself comprises a first, hollow needle 12) adapted to have movably secured therein at least one further, hollow needle (14), the at least one further needle (14) and part of the hypodermic needle (10) being movable relative to one another between a stressed position of the at least one furtheer needle (14) is substantially parallel to the first needle (12), and an unstressed position of the at least one further needle (14), in which the free end of the at least one further needle (14) lies beyond the axial and/or radial terminus of the first needle (12). The driving means serves for driving fluid from the at least one further hollow needle (14) at a substantially constant fluid flow rate.
    • 本发明涉及改进的皮下注射针和流体注射装置。 在一个实施例中,公开了皮下注射针(10),并且流体注射装置包括皮下注射针(10)和联接到针(10)的驱动装置。 皮下注射针(10)本身包括适于具有可移动地固定在其中的至少一个另外的中空针(14)的第一中空针12,所述至少一个另外的针(14)和所述皮下注射针(10)的一部分, 在所述至少一个毛皮针(14)的受应力位置基本上平行于所述第一针(12)和所述至少一个另外的针(14)的无应力位置之间相对于彼此可移动,其中所述自由 至少一个另外的针(14)的端部位于第一针(12)的轴向和/或径向末端之外。 驱动装置用于以基本恒定的流体流速从至少一个另外的空心针(14)驱动流体。