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    • 25. 发明申请
    • SHAPE LOCKABLE APPARATUS AND MEHTOD FOR ADVANCING AN INSTRUMENT THROUGH UNSUPPORTED ANATOMY
    • 形状可锁定的装置和手段,用于通过不需要的解剖学来升高仪器
    • WO2003105671A2
    • 2003-12-24
    • PCT/US2003/018891
    • 2003-06-13
    • USGI MEDICAL, INC.
    • EWERS, Richard, C.SAADAT, Vahid
    • A61B
    • A61B1/00154A61B1/00078A61B1/0008A61B1/00082A61B1/00105A61B1/00135A61B1/0052A61B1/0055A61B1/0057A61B1/0058A61B1/008A61B1/31A61B1/32
    • Apparatus and methods are provided for placing and advancing a diagnostic or therapeutic instrument in a hollow body organ of a tortuous or unsupported anatomy, comprising a handle, an overtube disposed within a hydrophilic sheath, and a distal region having an atraumatic tip. The overtube may be removable from the handle, and have a longitudinal axis disposed at an angle relative to the handle. The sheath may be disposable to permit reuse of the overtube. Fail-safe tensioning mechanisms may be provided to selectively stiffen the overtube to reduce distension of the organ caused by advancement of the diagnostic or therapeutic instrument. The fail-safe tensioning mechanisms reduce the risk of reconfiguration of the overtube in the event that the tension system fails, and, in one embodiment, rigidizes the overtube without substantial proximal movement of the distal region. The distal region permits passive steering of the overtube caused by deflection of the diagnostic or therapeutic instrument, while the atraumatic tip prevents the wall of the organ from becoming caught or pinched during manipulation of the diagnostic or therapeutic instrument.
    • 提供了设备和方法,用于将诊断或治疗仪器放置在曲折或无支撑的解剖结构的空心体器官中,包括手柄,设置在亲水护套内的外套管,以及具有无创尖端的远侧区域。 外套管可以从手柄移除,并且具有相对于把手以一定角度设置的纵向轴线。 护套可以是一次性的,以允许外套管的再次使用。 可以提供故障安全的张紧机构以选择性地加固外套管,以减少由诊断或治疗仪器的前进引起的器官的膨胀。 在张力系统失效的情况下,故障安全张紧机构降低了外套管的重新配置的风险,并且在一个实施例中,使外套管刚性化,而远端区域没有实质的近端运动。 远侧区域允许由诊断或治疗仪器的偏转引起的外套管的被动转向,而无创伤尖端防止器官的壁在操纵诊断或治疗仪器期间被卡住或夹住。