Electrode Designs for Protection of the Delicate Cochlear Structures

Area of Science:

• Otorhinolaryngology
• Biomedical Engineering
• Neuroscience

Background:

• Cochlear implant electrode design aims to balance audibility across frequencies with minimizing inner ear damage.
• Advanced Bionics has developed new electrode arrays to meet these design goals.

Purpose of the Study:

• To introduce and describe the design features of the HiFocus™ Mid-Scala and HiFocus SlimJ electrode arrays.
• To highlight the common design goals and surgical considerations for these new arrays.

Main Methods:

• Description of the HiFocus™ Mid-Scala (pre-curved) and HiFocus SlimJ (straight) electrode arrays.
• Discussion of design principles focused on frequency access and trauma prevention.
• Consideration of surgical factors influencing array selection and insertion.

Main Results:

• Both arrays are designed for effective access to the necessary frequency range.
• Features are incorporated to minimize intracochlear trauma during insertion.
• Arrays offer ease of handling and suitability for round window or cochleostomy insertion.
• Controlled insertion speed is a key feature for both electrode types.

Conclusions:

• The HiFocus™ Mid-Scala and HiFocus SlimJ arrays provide surgeons with options for cochlear implantation.
• These electrodes are engineered to optimize audibility while preserving cochlear integrity.
• Surgical flexibility is enhanced through the availability of different array configurations.