Cone Beam and Micro-Computed Tomography Validation of Manual Array Insertion for Minimally Invasive Cochlear Implantation

Wimmer, Wilhelm; Bell, Brett; Huth, Markus; Weisstanner, Christian; Gerber, Nicolas; Kompis, Martin; Weber, Stefan; Caversaccio, Marco (2014). Cone Beam and Micro-Computed Tomography Validation of Manual Array Insertion for Minimally Invasive Cochlear Implantation. Audiology & Neurotology, 19(1), pp. 22-30. Karger 10.1159/000356165

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Delivering cochlear implants through a minimally invasive tunnel (1.8 mm in diameter) from the mastoid surface to the inner ear is referred to as direct cochlear access (DCA). Based on cone beam as well as micro-computed tomography imaging, this in vitro study evaluates the feasibility and efficacy of manual cochlear electrode array insertions via DCA. Free-fitting electrode arrays were inserted in 8 temporal bone specimens with previously drilled DCA tunnels. The insertion depth angle, procedural time, tunnel alignment as well as the inserted scala and intracochlear trauma were assessed. Seven of the 8 insertions were full insertions, with insertion depth angles higher than 520°. Three cases of atraumatic scala tympani insertion, 3 cases of probable basilar membrane rupture and 1 case of dislocation into the scala vestibuli were observed (1 specimen was damaged during extraction). Manual electrode array insertion following a DCA procedure seems to be feasible and safe and is a further step toward clinical application of image-guided otological microsurgery.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ear, Nose and Throat Disorders (ENT)
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Image Guided Therapy > ARTORG Center - Artificial Hearing Research
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Image Guided Therapy
04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Institute of Diagnostic and Interventional Neuroradiology

UniBE Contributor:

Wimmer, Wilhelm; Bell, Brett; Huth, Markus; Weisstanner, Christian; Gerber, Nicolas; Kompis, Martin; Weber, Stefan and Caversaccio, Marco

Subjects:

600 Technology > 610 Medicine & health
500 Science > 570 Life sciences; biology

ISSN:

1420-3030

Publisher:

Karger

Language:

English

Submitter:

Wilhelm Wimmer

Date Deposited:

17 Jan 2014 10:47

Last Modified:

23 Jan 2019 12:34

Publisher DOI:

10.1159/000356165

PubMed ID:

24280962

Uncontrolled Keywords:

Robotic surgery, Direct cochlear access, Round window insertion, Intracochlear trauma, Thiel fixation, Free-fitting electrode arrays

BORIS DOI:

10.7892/boris.39901

URI:

https://boris.unibe.ch/id/eprint/39901

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