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    Process of making a catheter
    10.
    发明授权
    Process of making a catheter 有权
    制作导管的过程

    公开(公告)号：US06740277B2

    公开(公告)日：2004-05-25

    申请号：US10131365

    申请日：2002-04-24

    申请人： Glade Harold Howell ,  Cynthia Anne Castro

    发明人： Glade Harold Howell ,  Cynthia Anne Castro

    IPC分类号： B29C4720

    CPC分类号： A61M25/001 ,  A61M25/0023 ,  A61M25/0068 ,  A61M25/0606 ,  B29C47/00 ,  B29C47/0023 ,  B29C47/003 ,  B29C47/0033

    摘要： An over-the-needle catheter assembly includes a tube made of a flexible, biocompatible material. The tube has a proximal portion, a distal portion and a catheter tip positioned on the distal portion remote from the proximal portion. A lumen extends through the tube, substantially co-axially with the tube, from the proximal portion, through the distal portion and through to the catheter tip. The lumen cross-section at the proximal portion is larger than the cross-section at the distal portion. A shoulder is disposed in the lumen between the distal portion and the proximate portion. A catheter land, having a predetermined length, is defined as the portion of the lumen disposed in the distal portion of the tube between the shoulder and the distal end. A needle is disposed in the lumen and has a substantially circular cross-section. A discontinuity is located on the needle at a predetermined position with respect to the needle tip. The distance between the distal edge of the discontinuity and the needle tip is substantially equal to the length of the catheter land. The discontinuity is sized such that it fits within the lumen at the proximal portion but does not fit within the lumen at the distal portion.

    摘要翻译： 针管导管组件包括由柔性生物相容性材料制成的管。 管具有近端部分，远侧部分和位于远离近端部分的远侧部分上的导管末端。 内腔从近端部分延伸通过管，与管基本上同轴地延伸穿过远端部分并且穿过导管尖端。 近端部分的管腔横截面大于远侧部分处的横截面。 肩部设置在远端部分和近侧部分之间的内腔中。 具有预定长度的导管平台被定义为设置在肩部和远端之间的管的远端部分中的内腔的部分。 针位于内腔中并具有大致圆形的横截面。 在相对于针尖的预定位置上的针上存在不连续性。 不连续的远侧边缘与针尖之间的距离基本上等于导管平台的长度。 不连续尺寸使得其适配在近端部分的内腔中但不配合在远端部分的内腔内。