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Paper FrA11.5

Sun, Zhenglong (Nanyang Technological University), Balicki, Marcin (the Johns Hopkins University), Kang, Jin (the Johns Hopkins University), Handa, James (Johns Hopkins Medical Institute), Taylor, Russell H. (The Johns Hopkins University), Iordachita, Iulian (Johns Hopkins University)

Development and Preliminary Data of Novel Integrated Optical Micro-Force Sensing Tools for Retinal Microsurgery

Scheduled for presentation during the Regular Sessions "Biologically-Inspired Robots - I" (FrA11), Friday, May 15, 2009, 09:50−10:10, Room: 503

2009 IEEE International Conference on Robotics and Automation, May 12 - 17, 2009, Kobe, Japan

This information is tentative and subject to change. Compiled on January 21, 2022

Keywords Force and Tactile Sensing, Biologically-Inspired Robots, Haptics and Haptic Interfaces

Abstract

This paper reports the development of novel micro-force sensing tools for retinal microsurgery. Retinal microsurgery requires extremely delicate manipulation of retinal tissue, and tool-to-tissue interaction forces are frequently below human perceptual thresholds. Further, the interaction between the tool shaft and sclera makes accurate sensing of forces exerted on the retina very difficult with previously developed force sensing schemes, in which the sensor is located outside the eye. In the work reported here, we incorporate 160 μm Fiber Bragg Grating (FBG) strain sensors into the tool shaft to sense forces distal to the sclera. The sensor is applicable both with robotically manipulated and freehand tools. Preliminary results with a 1 degree-of-freedom (DOF) sensor have demonstrated 0.25 mN resolution, and work is underway to develop 2 and 3 DOF tools. The design and analysis of the force sensing tool is presented with preliminary testing data and some initial experiments using the tool with both freehand and robotic manipulation.

 

 

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