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    • 34. 发明申请
    • SWITCH FOR ULTRASONIC SURGICAL TOOL
    • 超声波手术刀开关
    • WO2008152378A3
    • 2009-02-05
    • PCT/GB2008001994
    • 2008-06-11
    • SRA DEV LTDYOUNG MICHAEL JOHN RADLEYYOUNG STEPHEN MICHAEL RADLEY
    • YOUNG MICHAEL JOHN RADLEYYOUNG STEPHEN MICHAEL RADLEY
    • A61B17/32A61B18/00H01H9/06
    • A61B17/320068A61B2017/00367H01H9/06H01H2009/0083
    • A switch unit (40) is mountable to a distal end of a handpiece of an electrically-activatable surgical tool, such as an ultrasonically-vibratable surgical tool. The switch unit (40) has a generally bullet-shaped outer form with an axial bore (42) through which a waveguide of the tool extends. A resiliently deformable band (1) extends around the switch unit (40) above a polygonal-section contact zone (2), such that fingertip pressure on the band (1) may locally depress the band (1) towards a flat area (12) of the contact zone (2). Switch contacts (11) are mounted to an inner surface of the band (1) opposite a plated circuit (10) located on each flat area (12) so as to form a plurality of switches. A switch to activate the tool is thus easily accessible to a user's fingertip in any orientation of the handpiece in the user's hand. The switch contacts (11) may each comprise a body having an electrical resistance dependent on a pressure exerted thereon. A magnitude of a response from the tool may thus be controlled by the pressure exerted by the user's fingertip.
    • 开关单元(40)可安装到可激活的外科手术工具(例如超声波可振动的外科手术工具)的手持件的远端。 开关单元(40)具有通常具有子弹形的外部形式,其具有轴向孔(42),工具的波导通过所述轴向孔延伸。 可弹性变形的带(1)围绕开关单元(40)围绕多边形截面接触区域(2)延伸,使得带(1)上的指尖压力可以朝向平坦区域(12)局部地将带(1) )接触区域(2)。 开关触点(11)安装到位于每个平坦区域(12)上的电镀电路(10)相对的带(1)的内表面上,以形成多个开关。 因此,用户的手中的手持件的任何方向,用户的指尖可以容易地访问激活该工具的开关。 开关触点(11)可以各自包括具有取决于施加在其上的压力的电阻的主体。 因此,来自工具的响应的大小可以由用户的指尖施加的压力来控制。