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    • 3. 发明授权
    • Surgical tool with mechanical advantage
    • 外科手术具有机械优势
    • US06206903B1
    • 2001-03-27
    • US09415783
    • 1999-10-08
    • Andris D. Ramans
    • Andris D. Ramans
    • A61B1728
    • A61B17/29A61B34/30A61B34/70A61B34/71A61B2017/2929A61B2017/2939
    • A robotic surgical tool includes an end effector having a pair of fingers and incorporating a mechanical advantage. In specific embodiments, a pulley and cable mechanism is used to actuate the end effector by applying cable tension. The coupling between the pulleys and the fingers of the end effector takes advantage of changes in moment arms for force transfer to avoid or minimize force reduction between the applied cable tension and the resultant force at or near the distal tip of each finger. In some embodiments, the coupling of the pulleys and fingers results in a force gain, a moment gain, or both.
    • 机器人手术工具包括具有一对手指并结合机械优点的末端执行器。 在具体实施例中,滑轮和缆索机构用于通过施加电缆张力致动末端执行器。 皮带轮和末端执行器的手指之间的联接利用力矩传递的力矩臂的变化,以避免或最小化施加的电缆张力与在每个手指的远侧末端附近的合力之间的力减小。 在一些实施例中,滑轮和手指的联接导致力增益,力矩增益或两者。