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    • 3. 发明公开
    • METHOD OF PRODUCING TAPERED OR POINTED CANNULA
    • 生产锥形或点状套筒的方法
    • EP1773519A1
    • 2007-04-18
    • EP05778774.9
    • 2005-08-02
    • Becton, Dickinson and Company
    • MUNOZ, MarcelinoMARTIN, Frank, E.HAIDER, Ishaq, M.
    • B21C5/00B21C37/18B23K11/00B23D31/00B23D21/00
    • B21C37/18B21C5/00B21G1/006B21G1/08Y10T225/12
    • A method of producing a tubular device is provided. The method comprises providing a tubular stock (24) having an axial passage, heating the tubular stock (24) at a first heating location to form a softened section (38), the softened section (38) separating a workpiece portion of the tubular stock from a remaining portion of the tubular stock (24), and drawing the workpiece portion away from the remaining portion to elongate the softened section (38, 40) and separate the workpiece portion from the remaining portion to form the tubular device. The drawing is performed at a rate such that the tubular device has an axial passage having a substantially uniform inside diameter, and an end of the tubular device formed from the elongated softened section is tapered (52).
    • 提供了一种制造管状装置的方法。 该方法包括提供具有轴向通道的管状储备件(24),在第一加热位置加热管状储备件(24)以形成软化部分(38),软化部分(38)将管状储备件的工件部分 从所述管状坯料(24)的剩余部分移除,并且将所述工件部分拉离所述剩余部分以使所述软化部分(38,40)伸长并且将所述工件部分与剩余部分分离以形成所述管状装置。 该拉拔以这样的速率进行,即管状装置具有轴向通道,该轴向通道具有基本均匀的内径,并且由细长的软化部分形成的管状装置的端部是锥形的(52)。