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Cochlear implantation without mastoidectomy: the pericanal electrode insertion technique.
1Department of ENT, Head and Neck Surgery, Inselspital, University of Berne, Berne, Switzerland. rudolf.haeusler@insel.ch
Acta Oto-Laryngologica
|December 18, 2002
Summary
A new minimally invasive cochlear implantation technique using direct electrode insertion through the external auditory canal (EAC) offers a simpler, faster, and safer alternative. This method minimizes facial nerve damage and reduces operating time, potentially replacing traditional approaches.
Area of Science:
- Otolaryngology
- Neurosurgery
- Medical Devices
Background:
- Cochlear implantation is a crucial treatment for severe to profound hearing loss.
- Traditional cochlear implantation often involves a transmastoid approach, which can be lengthy and carries risks.
Purpose of the Study:
- To present and evaluate a novel, minimally invasive cochlear implantation method.
- To assess the safety, efficacy, and advantages of direct electrode insertion through the external auditory canal (EAC).
Main Methods:
- A retroauricular skin incision is made, followed by elevation of the EAC skin and tympanic membrane.
- Cochleostomy is created through the EAC, and a rim is drilled for electrode fixation.
- The implant is placed retroauricularly, and the electrode is inserted through a tunnel into the cochlea.
Main Results:
- The technique was successfully applied in 15 adult and pre-adolescent patients.
- No surgical complications, infections, or electrode extrusions were observed.
- Functional results were comparable to traditional methods, with reduced operating time and minimized risk of facial nerve damage.
Conclusions:
- Pericanal electrode insertion offers a simple, fast, and safe alternative for cochlear implantation.
- This minimally invasive approach may supersede the classical transmastoidal method in adults and older children.