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    • 3. 发明授权
    • Dilatation catheter
    • 电动吸尘器
    • US5209729A
    • 1993-05-11
    • US740363
    • 1991-08-05
    • Eugen HofmannSusanne PfenningerWerner Niederhauser
    • Eugen HofmannSusanne PfenningerWerner Niederhauser
    • A61M25/00A61M29/02
    • A61M25/104A61M25/0014
    • The dilatation catheter has a shaft which consists of two separately produced shaft portions. Both portions have a first lumen for a guide wire and a second lumen for a pressure liquid. The two portions overlap at a connection point and are preferably welded to one another at this point. The proximal portion consists of two coaxial tube portions and the distal portion consists of an extruded two-lumen tube piece. The proximal portion is stiffer than the distal portion, which permits an optimal adaptation to a non-straight course of a blood vessel. The dilatation catheter according to the invention is particularly suitable for the treatment of arterial occlusions, which are situated in or downstream of a vessel curve.
    • 膨胀导管具有由两个单独产生的轴部分组成的轴。 两部分具有用于导丝的第一内腔和用于压力液体的第二腔。 这两个部分在连接点处重叠,并且在这一点上优选地彼此焊接。 近端部分由两个同轴管部分组成,远端部分由挤出的两腔管片组成。 近端部分比远端部分更硬,这允许最佳地适应血管的非直线进程。 根据本发明的扩张导管特别适用于治疗位于血管曲线中或下游的动脉闭塞。
    • 7. 发明授权
    • Method for opening constricted regions in the cardiovascular system
    • 打开心血管系统收缩区域的方法
    • US4787388A
    • 1988-11-29
    • US935467
    • 1986-11-26
    • Eugen Hofmann
    • Eugen Hofmann
    • A61M25/00A61B17/00A61F2/958A61M29/02
    • A61M25/1002A61B2017/00783A61M2025/1013A61M2025/1072A61M25/1011
    • A catheter for opening constricted regions in the cardiovascular system includes an expandable dilatation zone comprising three dilatation elements arranged around a support tube. The dilatation elements are of tubular configuration, and each communicates at one end with a passage in the support tube leading to a pressure-suction pump. Constricted regions in the cardiovascular system may be enlarged or opened by introducing the dilatation zone into the affected site in a folded condition and expanding it peripherally therein. Upon expansion of the dilatation elements flow passages are formed between these elements, through which body fluid (for example blood) can pass with little resistance. The supply of body fluid to organs and tissues downstream of the affected site is thereby maintained. Interruption of the dilatation treatment is not required to insure this supply, thus permitting a substantial reduction in the overall duration of the medical procedure. The catheter may be employed, for example, to dilate blood vessels constricted by arteriosclerotic lesions and in valvuloplasty procedures, and may also be employed for treating constrictions in the esophagus.
    • 用于打开心血管系统中收缩区域的导管包括可膨胀扩张区,包括围绕支撑管设置的三个扩张元件。 膨胀元件是管状构造,并且每个在一端与在支撑管中的通道连通,通向压力 - 抽吸泵。 通过在折叠状态下将扩张区引入受影响部位并在其周边扩张,可以扩大或打开心血管系统中的约束区域。 在膨胀元件膨胀时,流体通道形成在这些元件之间,体液(例如血液)可以以很小的阻力通过。 从而维持了对受影响部位下游的器官和组织的体液的供给。 不需要中断扩张治疗以确保这种供应,从而可以显着减少医疗程序的总体持续时间。 导管例如可用于扩张由动脉硬化损伤和瓣膜成形术程序收缩的血管,也可用于治疗食道中的收缩。