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    • 9. 发明授权
    • Method of producing tapered or pointed cannula
    • 生产锥形或尖头套管的方法
    • US07086266B2
    • 2006-08-08
    • US10912439
    • 2004-08-05
    • Marcelino MunozFrank E. MartinM. Ishaq Haider
    • Marcelino MunozFrank E. MartinM. Ishaq Haider
    • B21D37/16
    • B21C37/18B21C5/00B21G1/006B21G1/08Y10T225/12
    • A method of producing a tubular device is provided. The method comprises providing a tubular stock having an axial passage, heating the tubular stock at a first heating location to form a softened section, the softened section separating a workpiece portion of the tubular stock from a remaining portion of the tubular stock, and drawing the workpiece portion away from the remaining portion to elongate the softened section 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.
    • 提供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坯料,在第一加热位置加热管状坯料以形成软化部分,软化部分将管状坯料的工件部分与管状坯料的剩余部分分开, 工件部分远离其余部分以伸长软化部分并将工件部分与其余部分分开以形成管状装置。 以使得管状装置具有基本上均匀的内径的轴向通道的速度进行拉伸,并且由细长的软化部分形成的管状装置的端部是锥形的。