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Cylindrical cochlear electrode array for use in humans
P D van der Puije1, C R Pon, H Robillard
1Department of Electronics, Carleton University, Ottawa, Canada.
The Annals of Otology, Rhinology, and Laryngology
|June 1, 1989
Summary
Researchers fabricated a flexible, multichannel electrode array for human use. This platinum-based device, made using photolithography and rolled into a thin cylinder, shows promising results in ongoing tests.
Area of Science:
- Biomedical Engineering
- Materials Science
Background:
- Developing implantable medical devices requires biocompatible and flexible electrode arrays.
- Existing technologies may face limitations in miniaturization and adaptability for human implantation.
Purpose of the Study:
- To describe the fabrication of a novel flexible multichannel electrode array for human applications.
- To detail the materials and techniques used in creating a miniaturized, implantable electrode.
Main Methods:
- Utilized photolithographic techniques on a polyimide substrate with platinum conductors, pads, and stimulating tips.
- Fabricated a planar film electrode array, subsequently rolled into a 0.50 mm diameter cylinder.
- Encased the rolled electrode in medical-grade silicone rubber, forming ring-shaped stimulation pads.
Main Results:
- Successfully fabricated a flexible multichannel electrode array with a small diameter (0.50 mm).
- The stimulation pads are integrated as rings around the cylindrical electrode.
- Preliminary in vitro and in vivo tests have yielded positive outcomes.
Conclusions:
- The described fabrication method yields a promising flexible multichannel electrode array for human use.
- The device's design and materials are suitable for further investigation in clinical settings.
- Ongoing testing indicates the potential efficacy of this novel electrode array.