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Acta Otolaryngol. 2012 Apr;132(4):355-60. doi: 10.3109/00016489.2011.642813. Epub 2012 Mar 4.

A self-developed and constructed robot for minimally invasive cochlear implantation.

Author information

1
ARTORG Center, University of Bern, Switzerland.

Abstract

CONCLUSION:

A robot built specifically for stereotactic cochlear implantation provides equal or better accuracy levels together with a better integration into a clinical environment, when compared with existing approaches based on industrial robots.

OBJECTIVES:

To evaluate the technical accuracy of a robotic system developed specifically for lateral skull base surgery in an experimental set-up reflecting the intended clinical application. The invasiveness of cochlear electrode implantation procedures may be reduced by replacing the traditional mastoidectomy with a small tunnel slightly larger in diameter than the electrode itself.

METHODS:

The end-to-end accuracy of the robot system and associated image-guided procedure was evaluated on 15 temporal bones of whole head cadaver specimens. The main components of the procedure were as follows: reference screw placement, cone beam CT scan, computer-aided planning, pair-point matching of the surgical plan, robotic drilling of the direct access tunnel, and postoperative cone beam CT scan for accuracy assessment.

RESULTS:

The mean accuracy at the target point (round window) was 0.56 ± 0.41 mm with an angular misalignment of 0.88 ± 0.40°. The procedural time for the registration process through the completion of the drilling procedure was 25 ± 11 min. The robot was fully operational in a clinical environment.

PMID:
22385333
DOI:
10.3109/00016489.2011.642813
[Indexed for MEDLINE]
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