Medical Design
The Spiral

The Spiral is a medical instrument that is designed for cochlear implant surgery to aid in threading an electrode through the round window into the cochlear.

It is designed to guide the electrode to decrease the risk of damaging the electrode during this critical stage of the surgery as well as reducing the time spent for the doctor at this stage of the surgery.

It's simplicity allows you to stiffen the electrode as you guide across it's length. The spiraled end allows you to grip the electrode without crushing it to prevent damage.

What is a cochlear implant?

It is a small complex electronic device that can help to provide a sense of sound to a person who is profoundly deaf or severely hard of hearing.
Cochlear implants bypass damaged portions of the ear and directly stimulate the auditory nerve.
Signals generated by the implant are sent by way of the auditory nerve directly to the brain, which recognise the signals as sound.

Cochlear Implant
Cochlear Implant

Electrode

31mm-12 Pairs of Electrodes ranging from low frequencies located at the top (apex) of the cochlea to the mid frequencies and down to the high frequencies at the base of the cochlea.
These electrodes electrically stimulate auditory nerve endings to create sound sensations.

What are the biocompatible materials that can be used?

Biocompatible materials that can be used are Silicon, Ceramics, Titanium and Platinum.
Platinum is used as the electrode contact. For the Teflon-coated wires between the receiver/stimulator and the electrode contacts, platinum/iridium 90/10 is used.

Most critical part of the surgery.
Getting the electrode into a 5mm round window.
Tip of the electrode has a risk of being damaged.
Electrode
Medical Design
Medical Design
Medical Design
Medical Design