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    • 40. 发明公开
    • Surgical cutting instrument for coring tissue affixed thereto
    • 用于取芯组织的手术切割器械
    • EP0601709A2
    • 1994-06-15
    • EP93308826.2
    • 1993-11-04
    • VANCE PRODUCTS INCORPORATED d/b/a COOK UROLOGICAL INCORPORATED
    • Topel, Howard C.Foster, Thomas L.
    • A61B17/32A61B10/00
    • A61B17/32053A61B10/0266A61B17/320016A61B2017/320024A61B2017/3488
    • A surgical cutting instrument for coring, debulking, and removing a large, tough tissue mass such as a fibroid tumor through a trocar access sheath during a minimally invasive surgical procedure. The instrument includes an outer sheath having a distal cutting end for coring the tissue mass and an inner elongated member having a distal, tissue affixation end such as a helical coil for inserting into and stabilizing the tissue mass during the surgical coring procedure. The cutting instrument further includes an instrument engagement assembly when in an engaged position for urging the outer sheath toward the distal end of the inner elongated member. As a result, tissue affixed to the distal end of the inner elongated member is cored as the outer sheath is urged toward the distal end of the inner member and engages the affixed tissue. The instrument engagement assembly includes sheath and member engagement subassemblies. The sheath engagement subassembly is positioned about the proximal end of the outer sheath and includes a hub with a pivotedly interconnected side arm. The member engagement subassembly positioned along the intermediate portion of the inner member includes multiple start helical threads. The side arm has projections extending laterally therefrom for extension into the passage of the hub and engaging the multiple start helical threads of the inner member.
    • 一种手术切割器械,用于在微创外科手术过程中通过套管针入口套管取芯,切除和移除诸如纤维瘤的大型坚韧组织块。 该器械包括外部护套,该外部护套具有用于取芯组织块的远端切割端和具有远端组织固定端的内部细长构件,例如用于在手术取芯过程期间插入并稳定组织块的螺旋线圈。 当处于接合位置时,切割器械还包括器械接合组件,用于将外护套推向内细长构件的远端。 结果,当外部护套被推向内部构件的远端并且接合固定的组织时,固定到内部细长构件的远端的组织被芯化。 器械接合组件包括护套和构件接合子组件。 护套接合子组件围绕外护套的近端定位并且包括具有枢转地互连的侧臂的轮毂。 沿着内部构件的中间部分定位的构件接合子组件包括多个起始螺旋螺纹。 侧臂具有从其横向延伸的突起,用于延伸到轮毂的通道中并且接合内部构件的多个起始螺旋螺纹。