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    • 2. 发明申请
    • Balloon catheter with stiffening wire transition
    • 气球导管与加强丝过渡
    • US20070288053A1
    • 2007-12-13
    • US11787624
    • 2007-04-17
    • Thomas Trotta
    • Thomas Trotta
    • A61M29/02
    • A61M25/104A61M25/0043A61M25/0054A61M2025/0059A61M2025/0063A61M2025/0183
    • A balloon dilatation catheter has a relatively stiff and strong proximal cannula made of a material such as for example metal hypotubing. The distal end of the catheter includes an inflatable medical device or balloon, an inflation lumen and a guidewire lumen. A transition assembly is positioned between the proximal cannula and the distal end section. This transition assembly has a stiffening member within a transition tube, and provides for a flexible transition between the two components of diverse stiffness, namely the proximal cannula and the flexible distal end portion. A proximal end of the stiffening member may float within a distal end of the proximal cannula, but the stiffening member distal end is affixed to the shaft. The dilatation catheter may have a rapid exchange configuration, and is generally used in conjunction with a guiding catheter. During a procedure when the catheters are within the vascular system, the transition section of the dilatation catheter readily follows curved portions of the inserted guiding catheter.
    • 球囊扩张导管具有由诸如金属加压的材料制成的相对刚硬且强的近端插管。 导管的远端包括可膨胀的医疗装置或气囊,充气腔和导丝腔。 过渡组件定位在近端插管和远端部分之间。 该过渡组件在过渡管内具有加强构件,并且提供了具有不同刚度的两个部件之间的柔性过渡,即近侧插管和柔性远端部分。 加强构件的近端可以在近侧插管的远端内浮动,但是加强构件的远端固定在轴上。 扩张导管可具有快速的交换构型,并且通常与引导导管结合使用。 在导管位于血管系统内的过程中,扩张导管的过渡部分容易地沿着插入的引导导管的弯曲部分。
    • 7. 发明授权
    • Catheter with multiple flexibilities along the shaft
    • 导管具有沿轴的多种灵活性
    • US5342386A
    • 1994-08-30
    • US967520
    • 1992-10-26
    • Thomas Trotta
    • Thomas Trotta
    • A61L29/04A61M25/00A61M29/02
    • A61M25/1036A61L29/049A61M25/0054A61M25/104
    • Catheters are provided which have multiple flexibilities along their shafts as well as high pressure capabilities throughout the length of the catheter. Included is a catheter body having a relatively high stiffness which is particularly well-suited for maximum pushability through a body cavity or vessel. Secured to the distal end portion of this catheter body is a thin-walled, flexible tube which exhibits low stiffness to thereby impart maximum flexibility to the distal or tip portion of the catheter. A medical device balloon or other distal end member such as an atraumatic tip is secured to the distal end portion of the connecting tube. In the preferred arrangement, the thin-walled, flexible tube had been constructed by proceeding with radial expansion method in order to impart characteristics of excellent flexibility and high burst strength to the thin-walled flexible tube and thus to the assembled catheter.
    • 提供导管,其沿其轴具有多个灵活性以及在导管的整个长度上的高压能力。 包括具有相对高的刚度的导管体,其特别适合通过体腔或容器的最大推动性。 固定到该导管主体的远端部分的是薄壁的柔性管,其呈现低刚度,从而赋予导管的远端或尖端部分最大的柔性。 医疗装置气囊或其它远端构件,例如无创伤尖端固定到连接管的远端部分。 在优选的布置中,通过进行径向膨胀法来构造薄壁柔性管,以便赋予薄壁挠性管以及组装的导管优异的柔韧性和高爆裂强度的特性。