公开(公告)号：US5584842A

公开(公告)日：1996-12-17

申请号：US253929

申请日：1994-06-30

申请人： Thomas J. Fogarty ,  Thomas A. Howell ,  Jan R. Wicherski ,  Stephen A. Sosnowski

发明人： Thomas J. Fogarty ,  Thomas A. Howell ,  Jan R. Wicherski ,  Stephen A. Sosnowski

IPC分类号： A61B17/22 ,  A61B17/32 ,  A61B17/34 ,  A61D1/02

CPC分类号： A61B17/32075 ,  A61B17/320725 ,  A61B2017/22097

摘要： A valvulotome for disrupting vein valves in in-situ procedures, and for distrupting the vein valves in vein segments to be used in CABG procedures. The valvulotome includes an elongate blade mounting member and a thin, scythe-shaped cutting blade. The cutting blade is mounted relative to the blade mounting member such that the plane defined by the blade lies on the axis defined by the blade mounting member. The cutting blade has a fixed end, a free end, a cutting edge and a blunt back edge. The fixed end is fixedly attached to a distal portion of the blade mounting member. The sharpened edge faces towards the blade mounting member, which protects the vein from the sharpened edge. The sharpened edge arcs outwards and proximally from the distal portion of the blade mounting member, and terminates in a proximal portion, spaced from the blade mounting member. The blunt back edge is opposite the sharpened edge, facing the vein. The free end is opposite the fixed end and connects the blunt back edge to the proximal portion of the sharpened edge. The free end including a blunt proximal-facing portion that forms a continuation of the blunt back edge.

摘要翻译： 用于在现场手术中破坏静脉瓣的瓣膜切开术，以及用于扰乱CABG手术中使用的静脉节段中的静脉瓣。 瓣膜切开机包括细长的刀片安装构件和薄的Scythe形切割刀片。 切割刀片相对于刀片安装部件安装，使得由刀片限定的平面位于由刀片安装部件限定的轴线上。 切割刀片具有固定端，自由端，切削刃和钝的后缘。 固定端固定地附接到刀片安装构件的远端部分。 锋利的边缘面向刀片安装构件，其保护静脉免受锋利的边缘的影响。 锋利的边缘从叶片安装构件的远侧部分向外和近侧弧形，并且终止于与叶片安装构件间隔开的近端部分。 钝的后缘与锋利的边缘相对，面向静脉。 自由端与固定端相对，并将钝后缘连接到锐化边缘的近端部分。 自由端包括形成钝后缘的延续的钝的近端部分。