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    • 11. 发明申请
    • Flexible tip medical instrument
    • 柔性尖端医疗器械
    • US20050113714A1
    • 2005-05-26
    • US11024182
    • 2004-12-28
    • Joseph MarkMichael Miller
    • Joseph MarkMichael Miller
    • A61B10/02A61B10/00A61B10/04
    • A61B10/0275A61B2010/0208A61B2010/045
    • A biopsy device includes a flexible distal portion for obtaining a biopsy sample from a biopsy site. The device includes a coring cannula with a wall defined between a proximal end and a distal end and defining a lumen therebetween. The wall of the cannula defines a coring relief notch adjacent the distal end has a length along a longitudinal axis of the cannula longer than a diameter of the coring cannula. A wire is slidably disposable within the lumen of the coring cannula and has a proximal end and a distal end and defines a sampling cavity adjacent the distal end. A wire relief notch is positioned adjacent the sampling cavity. The wire relief notch has a length along a longitudinal axis of the wire longer than a width of the wire relief notch. A firing mechanism is engaged to the proximal ends of the coring cannula and the wire and the firing mechanism is operable to move the coring cannula relative to the wire from a second position to a first position to trap tissue from the biopsy site in the sampling cavity. The wire is slidable relative to the coring cannula between the first position retracted within the lumen so that the coring cannula covers the sampling cavity and a second position wherein the distal end of the wire is extended away from the coring cannula to expose the cavity to tissue in the biopsy site.
    • 活检装置包括用于从活检部位获得活检样本的柔性远端部分。 该装置包括取芯插管,其具有限定在近端和远端之间并在其间限定内腔的壁。 套管的壁限定邻近远端的取心凹口具有比套管的直径更长的套管的纵向轴线的长度。 电线在取芯插管的内腔内是可滑动地一次性的,并且具有近端和远端,并限定与远端相邻的取样腔。 线取出槽位于采样腔附近。 线切口具有沿着导线的纵向轴线的长度比导线释放槽口的宽度长。 击发机构接合到取心插管和线的近端,并且击发机构可操作以将取芯插管相对于线从第二位置移动到第一位置,以将组织从采样腔中的活检部位捕获 。 导线相对于取芯套管在第一位置缩回内腔之间可滑动,使得取芯套管覆盖采样腔,而第二位置,其中导线的远端从取心套管延伸以将空腔暴露于组织 在活检部位。