Automated insertion of preformed cochlear implant electrodes

Evaluation of curling behaviour and insertion forces on an artificial cochlear model

verfasst von

Thomas S. Rau, Andreas Hussong, Martin Leinung, Thomas Lenarz, Omid Majdani

Abstract

Purpose: As a substantial part of our concept of a minimally invasive cochlear implant (CI) surgery, we developed an automated insertion tool. Studies on an artificial scala tympani model were performed in order to evaluate force application when using the insertion tool. Methods: Contour electrodes were automatically inserted into a transparent cochlea model in Advance Off-Stylet technique. Occurring forces were measured by the use of a load cell and correlated with observed intracochlear movement of the electrode carriers. Results: Mean insertion forces were measured up to 20 mN comparable to previous studies on temporal bones. The most influencing factor is the implant's 2D curling behaviour in comparison to the 3D helical shape of the cochlea. Conclusion: The study confirms the functionality and reliability of the automated insertion tool for insertion of preformed CI. Improved insertion strategies considering patient-specific anatomy become possible.

Organisationseinheit(en)

Institut für Mechatronische Systeme

Externe Organisation(en)

Medizinische Hochschule Hannover (MHH)

Typ

Artikel

Journal

International journal of computer assisted radiology and surgery

Band

5

Seiten

173-181

Anzahl der Seiten

9

ISSN

1861-6410

Publikationsdatum

03.2010

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Chirurgie, Biomedizintechnik, Radiologie, Nuklearmedizin und Bildgebung, Maschinelles Sehen und Mustererkennung, Gesundheitsinformatik, Angewandte Informatik, Computergrafik und computergestütztes Design

Elektronische Version(en)

https://doi.org/10.1007/s11548-009-0299-9 (Zugang: Unbekannt)