Force sensing micro-forceps with integrated fiber Bragg grating for vitreoretinal surgery

Xingchi He, Marcin A. Balicki, Jin U. Kang, Peter L. Gehlbach, James T. Handa, Russell H. Taylor, Iulian I. Iordachitaa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Vitreoretinal surgery is a technically demanding ophthalmologic discipline. One of the main technical challenges in vitreoretinal surgery is the lack of force sensing since the surgical maneuvers fall below the human sensory threshold. Previously, a 2-degree-of-freedom (DOF) force sensing instrument with a surgical pick was developed and tested. However, a more commonly used instrument for vitreoretinal surgery is the forceps, with which a surgeon can easily grasp and delaminate the scar tissue. We have designed, fabricated and calibrated a novel 20-gauge (Ga) microsurgical instrument with a 2-DOF force sensing forceps. Three fiber Bragg grating (FBG) sensors are integrated into the customized Alcon™ forceps tip. The redundant sensor configuration provides good compensation for temperature-related drift. The calibration data show that the tool can provide a force resolution of 0.25 mN. In order to test the functionality and performance, the forceps was evaluated in inner shell membrane peeling experiments with chicken embryos as well as in in-vivo rabbit experiments. The instrument has demonstrated the capability of being applied in the clinical environment, with consistent force measurements. The force exerted in inner shell membrane peeling is from 6.07 to 34.65 mN. The development of the 2-DOF force sensing micro-forceps has shown that the fabrication process is feasible and reliable, and it can be used to develop a future 3-DOF force sensing tool.

Original languageEnglish (US)
Title of host publicationOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII
DOIs
StatePublished - Jun 13 2012
EventOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII - San Francisco, CA, United States
Duration: Jan 21 2012Jan 22 2012

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8218
ISSN (Print)1605-7422

Other

OtherOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII
CountryUnited States
CitySan Francisco, CA
Period1/21/121/22/12

Keywords

  • Fiber Bragg grating
  • Force sensing
  • Membrane peeling
  • Micro-forceps
  • Microsurgery
  • Smart instruments
  • Vitreoretinal surgery

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging

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  • Cite this

    He, X., Balicki, M. A., Kang, J. U., Gehlbach, P. L., Handa, J. T., Taylor, R. H., & Iordachitaa, I. I. (2012). Force sensing micro-forceps with integrated fiber Bragg grating for vitreoretinal surgery. In Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII [82180W] (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 8218). https://doi.org/10.1117/12.909602