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Journal of Intelligent & Robotic Systems

, Volume 97, Issue 1, pp 17–32 | Cite as

Safety Control Method of Robot-Assisted Cataract Surgery with Virtual Fixture and Virtual Force Feedback

  • Yongfei Yang
  • Zhongliang Jiang
  • Yuanyuan YangEmail author
  • Xiaozhi Qi
  • Ying Hu
  • Jianjun Du
  • Bing Han
  • Guiqin LiuEmail author
Article
  • 124 Downloads

Abstract

Surgery is an effective means of treating cataracts and restoring vision. However, cataract surgery rate (CSR) in developing countries and regions is relatively low due to the lack of experienced high-level surgeons. In this paper, to reduce the reliance of surgery on physician experience and thereby increase CSR, a master-slave robotic system and safety control strategies with a virtual fixture and virtual force feedback are proposed to assist cataract surgery. First, the surgery is divided into four different stages with different robot control modes. Secondly, the virtual constraint area with virtual spring model in the operating stage is established, so that the doctor can distinguish the operation area where the end of the surgical instrument is located by feedback force. Thirdly, safety control algorithm guarantees that the surgical instrument strictly moves around the surgical incision point, which is regarded as a remote centre of motion, so that the cornea outside the incision point is not injured. Finally, the experimental results show that the proposed safety control strategy allows the robotic system to perform the procedure safely.

Keywords

Cataract surgery Master-slave robot Virtual fixture Force feedback Remote centre of motion Safety control 

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Notes

Acknowledgements

This work is financially supported by the National Natural Science Foundation of China (Nos. 61603374, U1713218 and U1713221), the Key Fundamental Research Program of Shenzhen (Nos. JCYJ20160428144135222 and JCYJ20160427184134564), and in part by the Shenzhen Key Laboratory Project (No. ZDSYS201707271637577).

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Yongfei Yang
    • 1
    • 2
  • Zhongliang Jiang
    • 1
  • Yuanyuan Yang
    • 1
    Email author
  • Xiaozhi Qi
    • 1
  • Ying Hu
    • 1
  • Jianjun Du
    • 2
  • Bing Han
    • 3
  • Guiqin Liu
    • 3
    Email author
  1. 1.Shenzhen Key Laboratory of Minimally Invasive Surgical Robotics and System Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina
  2. 2.Harbin Institute of Technology at ShenzhenShenzhenChina
  3. 3.Shenzhen Eye HospitalShenzhenChina

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