April 2009
Volume 50, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2009
Sugical Motions Assessed by Electomagnetic Sensors During Ocular Surgery
Author Affiliations & Notes
  • J.-L. Bourges
    Jules Stein Eye Institute, Department of Ophthalmology,
    University of California Los Angeles (UCLA), Los Angeles, California
    Hotel-Dieu Hospital, Department of Ophthalmology, Paris Descartes University, Paris, France
  • J. Son
    Center for Advanced Surgical and Interventional Technology (CASIT),
    University of California Los Angeles (UCLA), Los Angeles, California
  • J.-P. Hubschman
    Jules Stein Eye Institute, Department of Ophthalmology,
    Center for Advanced Surgical and Interventional Technology (CASIT),
    University of California Los Angeles (UCLA), Los Angeles, California
  • M. Culjat
    Center for Advanced Surgical and Interventional Technology (CASIT),
    University of California Los Angeles (UCLA), Los Angeles, California
  • B. Allen
    Department of Computer Science,
    University of California Los Angeles (UCLA), Los Angeles, California
  • V. Nistor
    Center for Advanced Surgical and Interventional Technology (CASIT),
    Mechanical and Aerospace Engineering,
    University of California Los Angeles (UCLA), Los Angeles, California
  • S. D. Schwartz
    Jules Stein Eye Institute, Department of Ophthalmology,
    Center for Advanced Surgical and Interventional Technology (CASIT),
    University of California Los Angeles (UCLA), Los Angeles, California
  • Footnotes
    Commercial Relationships  J.-L. Bourges, None; J. Son, None; J.-P. Hubschman, None; M. Culjat, None; B. Allen, None; V. Nistor, None; S.D. Schwartz, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science April 2009, Vol.50, 6094. doi:
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      J.-L. Bourges, J. Son, J.-P. Hubschman, M. Culjat, B. Allen, V. Nistor, S. D. Schwartz; Sugical Motions Assessed by Electomagnetic Sensors During Ocular Surgery. Invest. Ophthalmol. Vis. Sci. 2009;50(13):6094.

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Abstract

Purpose: : Robot-assisted ocular microsurgery could improve precision, save time or prevent complications by task automation, and provide access to ocular surgery in undeserved countries by teleoperation. However, to design robotic devices, the range of motion of surgical instruments needs to be precisely quantified.

Methods: : Electromagnetic positional sensors (Ascension Technology, Burlington, VT) were attached to a phacoemulsification hand piece, a chopper, a vitreous cutter and an endocular light pipe. A referential sensor was sutured to the limbus. We performed successive surgical sequences (repeated 6 times each) mimicking cataract lens sculpture (LS), lens emulsification (PKE), cortex removal (CR), 360° vitrectomy (360), posterior vitreous detachment (PVD) on pig eyes. The X, Y, and Z positions and orientations of the tools were continuously monitored. The time of task completion was also recorded.

Results: : The maximal values of translation and angles at the distal tip of each instruments and for each surgical step, are shown in Table 1.

Conclusions: : To assist current ocular surgery, robotic devices holding instruments should allow for a minimum translation of 3.65cm, 3.14cm, 3.06cm respectively in the X, Y and Z planes and minimal angulations of 115.67° and 105.52° in the X and Y planes.

Keywords: clinical (human) or epidemiologic studies: systems/equipment/techniques • training/teaching cataract surgery • clinical (human) or epidemiologic studies: health care delivery/economics/manpower 
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