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12 条记录 (耗时 0.033 秒)

    Catheter system for controlled removal by radiant energy of biological obstructions
    1.
    发明授权
    Catheter system for controlled removal by radiant energy of biological obstructions 失效
    导管系统，用于通过生物障碍物的辐射能控制去除

    公开(公告)号：US4817601A

    公开(公告)日：1989-04-04

    申请号：US47430

    申请日：1987-05-06

    申请人： Laurence A. Roth ,  Stephen J. Herman ,  Carl R. Turnquist ,  Edward L. Sinofsky ,  Jacob Y. Wong

    发明人： Laurence A. Roth ,  Stephen J. Herman ,  Carl R. Turnquist ,  Edward L. Sinofsky ,  Jacob Y. Wong

    IPC分类号： A61B18/24 ,  A61B19/00 ,  G02B6/42 ,  A61B17/36

    CPC分类号： A61B18/245 ,  G02B6/4296 ,  A61B90/39

    摘要： A catheter for delivering radiant energy, such as a laser beam, is used in a technique to controllably apply the radiant energy in a patient's body, such as in a blood vessel. The radiant energy is applied in a manner which erodes biological material and may be used to drill through vascular obstructions. The catheter emits the radiant energy from its distal end in a pattern which defines a relatively small working region in which the energy density level is sufficiently high to remove the biological material. The energy distribution is substantially uniform across the beam. Distally beyond the working region, the energy density of the beam decays sharply so that biological material beyond the working region is not removed.

    摘要翻译： 用于传递辐射能的导管（例如激光束）用于可控制地将辐射能施加在患者身体（例如血管）中的技术中。 辐射能以侵蚀生物材料的方式施加，并可用于穿过血管障碍物。 导管从其远端以限定相对小的工作区域的图案发射辐射能，其中能量密度水平足够高以去除生物材料。 能量分布在横梁上基本均匀。 远离工作区域，光束的能量密度急剧衰减，使得超出工作区域的生物材料不被去除。

    Wire guided laser catheter
    2.
    发明授权
    Wire guided laser catheter 失效
    导线激光导管

    公开(公告)号：US4850351A

    公开(公告)日：1989-07-25

    申请号：US934629

    申请日：1986-11-25

    申请人： Stephen J. Herman ,  Laurence A. Roth ,  Edward L. Sinofsky ,  Douglas W. Dickinson, Jr.

    发明人： Stephen J. Herman ,  Laurence A. Roth ,  Edward L. Sinofsky ,  Douglas W. Dickinson, Jr.

    IPC分类号： A61B18/20 ,  A61B18/22 ,  A61B18/24 ,  A61B19/00

    CPC分类号： A61B18/245 ,  A61B2018/2238 ,  A61B2090/3933 ,  Y10T74/20444 ,  Y10T74/20456

    摘要： A catheter having optical fibers for delivering laser energy to a blood vessel to remove obstructions in the blood vessel is adapted to be guided controllably and selectively by a guide wire to the site to be treated. The catheter includes a central lumen which is open at the distal end of the catheter and which receives the guide wire so that the catheter may be advanced over the guide wire. A relatively few number of optical fibers are contained within and extend longitudinally of the catheter wall. The distal tip of the catheter is provided with a cylindrical optically transparent end cap and means are provided to securely mount the distal ends of the optical fibers with respect to the end cap so that the light emitted from the ends of the fibers passes through the cylindrical wall of the end cap and is emitted at the distal emissions face of the end cap. The catheter embodies a special construction of an inner catheter core and a surrounding sheath which provides for a high degree of flexibility to enable the catheter to be passed through tortuous passages in a patient's vasculature. The inner core is formed from a plurality of articulated segments and is surrounded by a thin flexible sheath. Longitudinal flutes formed along the articulated segments of the core receive and retain the optical fibers in a manner which permits the fibers, sheath and core to shift longitudinally with respect to each other to provide a very high degree of flexibility for the composition catheter.

    摘要翻译： 具有用于将激光能量传送到血管以去除血管中的障碍物的光纤的导管适于通过导丝被可控地和选择性地引导到待治疗部位。 该导管包括中心腔，其在导管的远端处是开口的，并且其接收导丝，使得导管可以在导丝上前进。 相对较少数量的光纤被容纳在导管壁的内部并且在导管壁的纵向延伸。 导管的远端设置有圆柱形光学透明端盖，并且提供装置以相对于端盖牢固地安装光纤的远端，使得从纤维的端部发射的光穿过圆柱形 端盖的壁并在端盖的远端排放面处发射。 导管体现了内导管芯和周围护套的特殊构造，其提供高度的柔性以使导管能够通过患者脉管系统中的曲折通道。 内芯由多个铰接段形成并被薄的柔性护套包围。 沿着芯的铰接段形成的纵向凹槽以允许纤维，护套和芯相对于彼此纵向移动的方式接收和保持光纤，以为组合物导管提供非常高的柔性。