Robot-assisted minimally invasive surgery (MIS) has shown tremendous advances over the traditional techniques. To improve dexterity and back-drivability of the existing planar remote center-of-motion (RCM) mechanism, on which an active prismatic joint is required to drive the surgical tool move in–out of the patient's body, a two degrees-of-freedom (DOFs) planar RCM mechanism is proposed by constructing virtual parallelograms in this paper. The mechanism can be considered as a generalized double parallelogram; both of the actuated joints are revolute joints. This feature enhances the intrinsic back-drivability of the mechanism. The mathematical framework is introduced first to prove that the mechanism could execute RCM. Then, the inverse kinematics of the planar mechanism is solved, and the Jacobian matrix is derived in this paper. Further, the singularity and the kinematic performance based on the kinematic equations are investigated, and the workspace of the mechanism is verified. Finally, a prototype was built to test the function of the proposed RCM mechanism. The results show that the mechanism can fulfill the constraint of MIS, and it can be used as the basic element of the active manipulator in an MIS robot.
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December 2016
Research-Article
Kinematic Design of a Generalized Double Parallelogram Based Remote Center-of-Motion Mechanism for Minimally Invasive Surgical Robot
Kang Kong,
Kang Kong
Key Lab for Mechanism Theory
and Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: kkwemss@yahoo.com
and Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: kkwemss@yahoo.com
Search for other works by this author on:
Jianmin Li,
Jianmin Li
Key Lab for Mechanism Theory and Equipment
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: mjli@tju.edu.cn
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: mjli@tju.edu.cn
Search for other works by this author on:
Huaifeng Zhang,
Huaifeng Zhang
Key Lab for Mechanism Theory and Equipment
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: zhanghuaifeng0916@163.com
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: zhanghuaifeng0916@163.com
Search for other works by this author on:
Jinhua Li,
Jinhua Li
Key Lab for Mechanism Theory and Equipment
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: lijinhua@tju.edu.cn
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: lijinhua@tju.edu.cn
Search for other works by this author on:
Shuxin Wang
Shuxin Wang
Key Lab for Mechanism Theory and Equipment
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: shuxinw@tju.edu.cn
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: shuxinw@tju.edu.cn
Search for other works by this author on:
Kang Kong
Key Lab for Mechanism Theory
and Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: kkwemss@yahoo.com
and Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: kkwemss@yahoo.com
Jianmin Li
Key Lab for Mechanism Theory and Equipment
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: mjli@tju.edu.cn
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: mjli@tju.edu.cn
Huaifeng Zhang
Key Lab for Mechanism Theory and Equipment
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: zhanghuaifeng0916@163.com
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: zhanghuaifeng0916@163.com
Jinhua Li
Key Lab for Mechanism Theory and Equipment
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: lijinhua@tju.edu.cn
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: lijinhua@tju.edu.cn
Shuxin Wang
Key Lab for Mechanism Theory and Equipment
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: shuxinw@tju.edu.cn
Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: shuxinw@tju.edu.cn
Manuscript received October 31, 2015; final manuscript received May 11, 2016; published online August 24, 2016. Assoc. Editor: Carl Nelson.
J. Med. Devices. Dec 2016, 10(4): 041006 (8 pages)
Published Online: August 24, 2016
Article history
Received:
October 31, 2015
Revised:
May 11, 2016
Citation
Kong, K., Li, J., Zhang, H., Li, J., and Wang, S. (August 24, 2016). "Kinematic Design of a Generalized Double Parallelogram Based Remote Center-of-Motion Mechanism for Minimally Invasive Surgical Robot." ASME. J. Med. Devices. December 2016; 10(4): 041006. https://doi.org/10.1115/1.4033668
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