公开(公告)号：US5606981A

公开(公告)日：1997-03-04

申请号：US383322

申请日：1995-02-03

申请人： Richelle Tartacower ,  Lex Jansen ,  Joanne Gilbert ,  Rebecca C. Testa

发明人： Richelle Tartacower ,  Lex Jansen ,  Joanne Gilbert ,  Rebecca C. Testa

IPC分类号： A61M25/00 ,  A61M25/01 ,  A61M25/09 ,  A61M25/098 ,  A61B5/00

CPC分类号： A61M25/09 ,  A61M2025/09091 ,  A61M2025/09166 ,  A61M2025/09175

摘要： A guidewire for use with a catheter has varying radiopacity as well as at least one radiopaque marker in its distal end. In one embodiment, the guidewire includes a shaft that supports a distal radiopaque coil and a proximal radiopaque coil. The proximal and distal coils are spaced apart from one another. The non-radiopaque area between the two coils has at least one radiopaque marker band attached to the shaft. The marker bands provide several radiographically visible reference Lengths. A polymer sleeve encases the marker bands and the shaft between the first and second coils providing a uniform outer diameter to the distal region of the guidewire. In another embodiment, the proximal coil may be omitted. In a further embodiment, a radiopaque coil having varying pitch along its length is supported by and attached to a distal region of the core wire. The coil includes highly radiopaque distal and proximal sections, or highly radiopaque distal section and lightly radiopaque window section, and a more moderately radiopaque intermediate section. The intermediate section of the coil may include at least one smaller tightly wound radiographically dark coil section separated from the distal and proximal sections and from one another by loosely wound coil sections. A polymer sleeve is attached to the guidewire and covers a portion of the coil. In a fourth embodiment, the sleeve is attached to the guidewire only at its ends and covers the intermediate window section of the coil.

摘要翻译： 与导管一起使用的导丝线在其远端具有不同的射线不透性以及至少一个不透射线的标记。 在一个实施例中，导丝包括支撑远端不透射线圈和近端不透射线圈的轴。 近端和远端线圈彼此间隔开。 两个线圈之间的非不透射线区域具有连接到轴的至少一个不透射线的标记带。 标记带提供几个X线照片可见的参考长度。 聚合物套筒包围标记带和轴之间的第一和第二线圈之间提供均匀的外径到导丝的远端区域。 在另一个实施例中，可以省略近端线圈。 在另一个实施例中，沿着其长度具有变化间距的不透射线圈由芯线的远侧区域支撑并连接到芯线的远端区域。 线圈包括高度不透射线的远端和近端部分，或高度不透射线的远端部分和轻度不透射线的窗口部分，以及更适度的不透射线的中间部分。 线圈的中间部分可以包括至少一个较小的紧密缠绕的放射线暗的线圈部分，其通过松弛缠绕的线圈部分与远端部分和近侧部分和彼此分离。 聚合物套筒连接到导丝并且覆盖线圈的一部分。 在第四实施例中，套筒仅在其端部附接到导丝线并且覆盖线圈的中间窗口部分。