公开(公告)号：WO1995024237A2

公开(公告)日：1995-09-14

申请号：PCT/US1995003076

申请日：1995-03-09

Applicant: C.R. BARD, INC.

Inventor： C.R. BARD, INC. ,  TARTACOWER, Richelle ,  JANSEN, Lex ,  GILBERT, Joanne ,  TESTA, Rebecca, C.

IPC: A61M25/01

CPC classification number: A61M25/09 ,  A61M2025/09091 ,  A61M2025/09166 ,  A61M2025/09175

Abstract: 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 having a distal radiopaque coil supported by and attached to a distal portion of the shaft and a proximal radiopaque coil supported by and attached to an intermediate portion of the shaft. The proximal and distal coils are spaced apart from one another. The distal coil may be more radiopaque than or equally radiopaque to the proximal coil such that when viewed under fluoroscopy, the highly radiopaque coil will define a dark image whereas the more proximal radiopaque coil will define a moderately radiopaque image or both will define a dark image. The area between the two coils will appear white. Between the coils, at least one radiopaque marker band is attached to the shaft. The marker bands provide several reference lengths for a physician. 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 of the first embodiment is absent and the polymer sleeve extends proximally of the radiopaque marker bands. 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.

Abstract translation: 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，所述导丝包括具有由所述轴的远端部分支撑并连接到所述轴的远侧部分的远侧不透射线圈的轴和由所述轴的中间部分支撑并附接到所述轴的中间部分的近侧不透射线圈。 近端和远端线圈彼此间隔开。 远端线圈可能比近端线圈更不透射或相当不透射线，使得当在透视下观察时，高度不透射线的线圈将限定暗图像，而更近端的不透射线圈将限定适度不透射线的图像，或两者将限定暗图像 。 两个线圈之间的区域将显示为白色。 在线圈之间，至少一个不透射线的标记带附接到轴上。 标记带为医师提供几个参考长度。 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，第一实施例的近端线圈不存在，并且聚合物套筒向不透射线标记带的近侧延伸。 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。

公开(公告)号：EP0749334A1

公开(公告)日：1996-12-27

申请号：EP95914010.0

申请日：1995-03-09

Applicant: C.R. BARD, INC.

Inventor： TARTACOWER, Richelle ,  JANSEN, Lex ,  GILBERT, Joanne ,  TESTA, Rebecca, C.

IPC: A61M25

CPC classification number: A61M25/09 ,  A61M2025/09091 ,  A61M2025/09166 ,  A61M2025/09175

Abstract: 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 having a distal radiopaque coil supported by and attached to a distal portion of the shaft and a proximal radiopaque coil supported by and attached to an intermediate portion of the shaft. The proximal and distal coils are spaced apart from one another. The distal coil may be more radiopaque than or equally radiopaque to the proximal coil such that when viewed under fluoroscopy, the highly radiopaque coil will define a dark image whereas the more proximal radiopaque coil will define a moderately radiopaque image or both will define a dark image. The area between the two coils will appear white. Between the coils, at least one radiopaque marker band is attached to the shaft. The marker bands provide several reference lengths for a physician. 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 of the first embodiment is absent and the polymer sleeve extends proximally of the radiopaque marker bands. 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.