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Special Section Technical Briefs

Design and Thermal Testing of an Automatic Drill Guide for Less Invasive Cochlear Implantation1

[+] Author and Article Information
Neal P. Dillon, Jason E. Mitchell, Robert J. Webster, III

Department of Mechanical Engineering,
Vanderbilt University,
Nashville, TN 37235

M. Geraldine Zuniga, Robert F. Labadie

Department of Otolaryngology,
Vanderbilt University Medical Center,
Nashville, TN 37235

DOI: 10.1115/1.4033223Manuscript received March 1, 2016; final manuscript received March 17, 2016; published online May 12, 2016. Editor: William Durfee.

J. Med. Devices 10(2), 020923 (May 12, 2016) (2 pages) Paper No: MED-16-1163; doi: 10.1115/1.4033223 History: Received March 01, 2016; Revised March 17, 2016

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Figures

Grahic Jump Location
Fig. 1

(a) Less invasive CI surgical system consisting of a microtable and drill guide attached to the patient’s skull and (b) CT scan showing two-stage drill path to cochlea passing close to facial nerve

Grahic Jump Location
Fig. 4

Mean temperature on plane at a distance of 0.5 mm (average distance of facial nerve) from edge of drill path at middle ear throughout the drilling procedure. The solid and dashed lines represent the first and second trial for the parameter set, respectively.

Grahic Jump Location
Fig. 3

Experimental setup for evaluating the temperature rise near the facial nerve during minimally invasive CI surgery, and image of heat distribution as the drill enters the middle ear for one trial

Grahic Jump Location
Fig. 2

The automatic drill guide mounts to the microtable and is programmed to drill from lateral skull surface to the cochlea

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