公开(公告)号：US20090312786A1

公开(公告)日：2009-12-17

申请号：US12138039

申请日：2008-06-12

申请人： Linda Trask ,  Frank Ferguson ,  Susan Anderson

发明人： Linda Trask ,  Frank Ferguson ,  Susan Anderson

IPC分类号： A61M29/00

CPC分类号： A61M29/00 ,  A61M25/007 ,  A61M25/0606 ,  A61M25/0662 ,  A61M2025/0687

摘要： The present invention relates to a dilator. The dilator includes a shaft, a lumen and a hub. The shaft has at least two stiffness sections with the stiffness sections becoming less rigid as they approach a distal end of the shaft. The varying stiffness sections allow the dilator to track along the guidewire through torturous vasculature so as the dilator is advanced and the stiffness is changed, the stiffer sheath can advance smoothly through a blood vessel. The dilator may also taper at the distal tip to stretch the initial skin puncture hole larger to accommodate the dilator shaft and ease the sheath tip insertion through to the vasculature. Or the shaft may taper from where it extends beyond the sheath distal tip to the distal end so that it can reach further distal in the vasculature. The dilator may also include an atraumatic tip for easier advancement of the dilator. The dilator distal end may also include one or more radiopaque markers and a shaped distal end.

摘要翻译： 本发明涉及一种扩张器。 扩张器包括轴，内腔和轮毂。 轴具有至少两个刚度部分，刚度部分在接近轴的远端时刚性变小。 变化的刚度部分允许扩张器沿着导丝通过弯曲脉管系统跟踪，以便扩张器前进并且刚度改变，较硬的护套可以顺利地通过血管前进。 扩张器还可以在远侧尖端处变细，以使初始皮肤穿刺孔更大以容纳扩张器轴并且容易将鞘尖插入通过脉管系统。 或者轴可以从其延伸超过鞘远侧末端到远端的锥度，使得其可以在脉管系统中进一步远端。 扩张器还可以包括无创伤的尖端，以便于扩张器的前进。 扩张器远端还可以包括一个或多个不透射线的标记和形状的远端。