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    • 50. 发明申请
    • ENDOSCOPIC ROTARY ACCESS NEEDLE
    • 内窥镜旋转接触针
    • US20090287236A1
    • 2009-11-19
    • US12122031
    • 2008-05-16
    • Gregory J. BakosWilliam D. FoxJohn M. MuganDamien J. Ryan
    • Gregory J. BakosWilliam D. FoxJohn M. MuganDamien J. Ryan
    • A61B17/32A61L2/00
    • A61B17/320016A61B1/018A61B1/04A61B17/32002A61B17/32053A61B17/3415A61B2017/00278A61B2017/306A61B2017/320044
    • Various methods and devices are provided for cutting an opening through tissue. In one embodiment, a tissue-penetrating device is provided and includes a flexible elongate needle shaft that has a distal end with a circumferentially extending tissue-cutting edge formed thereon. A proximal end of the elongate needle shaft interfaces with a rotary control member for selectively applying a rotary motion to the elongate needle shaft. When the rotating tissue-cutting edge is brought into contact with target tissue, the tissue-cutting edge cuts an opening through the tissue. The device may have a stylet that has a blunt end that can be adjusted to protrude out of the distal end of the elongate needle shaft out beyond the tissue-cutting edge and is biased inward into the elongate needle shaft when the blunt end is brought into contact with the tissue to expose the tissue-cutting edge to the tissue. The stylet may be used as a guide wire after the hole has been cut through the tissue. An outer sheath may be provided to selectively cover the distal end of the elongate needle shaft and blunt end of the stylet. The outer sheath may have a selectively expandable member thereon that may be used to expand the cut hole
    • 提供各种方法和装置来切割通过组织的开口。 在一个实施例中,提供组织穿透装置,并且包括柔性细长针轴,其具有形成在其上的周向延伸的组织切割刃的远端。 细长针轴的近端与旋转控制构件接合,用于选择性地向细长针轴施加旋转运动。 当旋转的组织切割边缘与目标组织接触时,组织切割边缘切割穿过组织的开口。 该装置可以具有一个具有钝头的探针,其可以被调节以从细长针轴的远端突出超出组织切割边缘,并且当钝端进入时被向内偏压到细长的针轴中 与组织接触以将组织切割边缘暴露于组织。 孔穿过组织后,探针可用作导丝。 可以设置外护套以选择性地覆盖细长针轴的远端和探针的钝端。 外护套可以在其上具有可选择性地可扩张的构件,其可以用于扩大切割孔