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1. 发明授权

US5144959A Catheter guidewire with varying radiopacity 失效
标题翻译：导尿管导丝具有不同的射线不透性
公开(公告)号：US5144959A
公开(公告)日：1992-09-08
申请号：US394075
申请日：1989-08-15
申请人： Richard A. Gambale , James F. Crittenden , L. Venkata Raman
发明人： Richard A. Gambale , James F. Crittenden , L. Venkata Raman
IPC分类号： A61M25/01 , A61M25/00
CPC分类号： A61M25/09 , A61M2025/09166 , A61M2025/09175
摘要： A guidewire for use with a catheter has varying radiopacity in its distal end. In one embodiment the guidewire includes a shaft having an outer helical coil attached to the distal region of the shaft, the coil extending distally beyond the distal end of the shaft and terminating in a tip weld. A smaller diameter inner helical coil is disposed within the outer coil and is attached at its proximal end to the distal end of the shaft and at its distal end to the tip weld. The inner coil is formed from a highly radiopaque material. The portion of the shaft contained within the outer coil is plated thinly with a highly radiopaque material. When viewed under fluoroscopy, the highly radiopaque coil will define a dark image whereas the more proximal plated portion of the shaft will define a moderately radiopaque image. In other embodiments, the coil at the distal end of the catheter is variously electroplated to provide regions of high radiopacity, moderate radiopacity and relatively no radiopacity.
摘要翻译：用于导管的导线在其远端具有变化的不透射线性。在一个实施例中，导丝包括具有附接到轴的远侧区域的外螺旋线圈的轴，线圈向远侧延伸超过轴的远端并且终止于尖端焊缝。较小直径的内螺旋线圈设置在外线圈内，并且其近端附接到轴的远端，并且在其远端附接到尖端焊缝。内线圈由高度不透射线的材料形成。包含在外部线圈内的轴的部分用高度不透射线的材料薄薄地电镀。当在透视下观察时，高度不透射线的线圈将限定暗图像，而轴的较近侧的电镀部分将限定适度不透射线的图像。在其他实施例中，导管远端处的线圈被不同地电镀以提供高放射不透性，适度的放射不透性和相对不具有无辐射不透性的区域。

2. 发明授权

US5368049A Superelastic formable guidewire with malleable cladding 失效
标题翻译：具有可延展包层的超弹性可成形导丝
公开(公告)号：US5368049A
公开(公告)日：1994-11-29
申请号：US138554
申请日：1993-10-15
申请人： L. Venkata Raman , Stephen M. Salmon
发明人： L. Venkata Raman , Stephen M. Salmon
IPC分类号： A61M25/01 , A61B5/00 , A61M20060101 , A61M25/09
CPC分类号： A61M25/09 , A61M2025/09083 , A61M2025/09175 , A61M2205/0266
摘要： A guidewire is provided having a malleable segment extending beyond a superelastic tip portion of the guidewire. Such a configuration provides a guidewire which is resistant to kinking and plastic deformation in the superelastic portion, but which has a distal segment which can be shaped by a physician immediately prior to use in a surgical procedure. The malleable segment can be attached to the distal end of the superelastic tip portion, or alternatively, can result from a malleable coating on a portion of the superelastic tip, wherein the coating is thick enough to allow the coated portion of the tip to be formed into a desired shape. The malleable segment can be radiopaque to ease fluoroscopic visualization of the guidewire. In addition, the entire guidewire located proximally to the malleable segment can be fabricated from a superelastic alloy to provide resistance to kinking and plastic deformation along virtually the entire length of the guidewire.
摘要翻译：提供导丝，其具有延伸超过导丝的超弹性末端部分的延展部分。这种构造提供了一种能够在超弹性部分中抵抗扭结和塑性变形的导丝，但是其具有可以在外科手术中使用之前立即由医师形成的远端部分。可延展部分可以附接到超弹性末端部分的远端，或者可以由超弹性末端的一部分上的可延展涂层产生，其中涂层足够厚以允许尖端的涂覆部分形成成为所需的形状。可延展部分可以是不透射线的，以便于导丝的透视可视化。此外，位于可延展部分的近侧的整个导丝线可以由超弹性合金制成，以提供几乎在导丝的整个长度上的扭结和塑性变形的阻力。

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