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Several passive joints are usually needed in surgical robots to decrease the difficulty in doctors' operating, which can be manually rotated without motor pushing. When stopped at a specified position, passive joints should be locked until operation ends, and keep bearing torques. This paper is aimed to design a locking method used in minimally invasive surgical robot. Firstly choose the locking type...
The design and evaluation of a new compliant microgripper is reported in this paper on the basis of a dissymmetric mechanism. This structure has two parallelogram mechanisms which enable the generation of purely translational motion of the gripper tips. It is desirable for micromanipulation and microassembly tasks. Unlike the traditional pure-translation grippers, the presented one has a simple architecture...
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