Surgical instrument with magnetic clamping force
    9.
    发明授权
    Surgical instrument with magnetic clamping force 有权
    手术器械具有磁力夹紧力

    公开(公告)号:US08628529B2

    公开(公告)日:2014-01-14

    申请号:US12911943

    申请日:2010-10-26

    IPC分类号: A61B18/18

    摘要: A surgical instrument comprising an end effector, the end effector comprising first and second opposing jaw members, wherein at least one of the first and second jaw members are moveable such that the first and second jaw members are transitionable between open and closed positions. The first jaw member may comprise a permanent magnet. The second jaw member may also comprise a magnet (e.g., permanent or soft). The magnetic motive force between the magnets of the first and second jaw members may attract each other to thereby reduce the external force required to transition the first and second jaw members to the closed position. In addition, the magnets may be configured to repeal each other to thereby aid in opening the jaw members.

    摘要翻译: 包括端部执行器的外科器械,所述端部执行器包括第一和第二相对的钳口构件,其中所述第一和第二钳口构件中的至少一个可移动,使得所述第一和第二钳口构件在打开位置和闭合位置之间是可转换的。 第一钳口构件可以包括永磁体。 第二钳口构件还可以包括磁体(例如,永久的或软的)。 第一和第二钳口构件的磁体之间的磁动力可以彼此吸引,从而减小将第一和第二钳口构件转换到关闭位置所需的外力。 此外,磁体可以被配置为相互废除,从而有助于打开钳口构件。

    ELECTROSURGICAL INSTRUMENT EMPLOYING MULTIPLE POSITIVE TEMPERATURE COEFFICIENT ELECTRODES
    10.
    发明申请
    ELECTROSURGICAL INSTRUMENT EMPLOYING MULTIPLE POSITIVE TEMPERATURE COEFFICIENT ELECTRODES 有权
    使用多个积极温度系数电极的电磁仪器

    公开(公告)号:US20110306965A1

    公开(公告)日:2011-12-15

    申请号:US12797288

    申请日:2010-06-09

    IPC分类号: A61B18/14

    摘要: An electrosurgical surgical instrument can comprise a handle and an end effector, wherein the end effector can comprise first and second jaws which can be opened and closed in order to capture tissue therebetween. In various embodiments, the first and second jaws can comprise one or more electrodes configured to apply a voltage across the tissue, wherein one or both of the first and second jaws can include a plurality of electrodes each comprised of a positive temperature coefficient material having a different switching temperature. The electrical resistances of the electrodes can increase significantly once the temperature of the electrodes exceed their switching temperatures and, owing to the increased electrical resistance, the flow of current through the electrodes can be reduced and/or prevented. In various circumstances, the different switching temperatures of the electrodes can allow some of the electrodes to switch off before the other electrodes.

    摘要翻译: 电外科手术器械可以包括手柄和末端执行器,其中末端执行器可以包括可以打开和关闭的第一和第二钳口,以便在其间捕获组织。 在各种实施例中,第一和第二钳口可以包括被配置为在组织上施加电压的一个或多个电极,其中第一和第二钳口中的一个或两个可以包括多个电极,每个电极由正温度系数材料组成, 不同的开关温度。 一旦电极的温度超过其开关温度,电极的电阻可以显着增加,并且由于增加的电阻,可以减少和/或阻止通过电极的电流。 在各种情况下,电极的不同开关温度可允许一些电极在其它电极之前断开。