FAQ's - Using a cochlear implant

1. Do I have to limit my sports activity? What about scuba diving and swimming?
2. How long do the batteries in the processors last?
3. What type of batteries do the processors take?
4. What is a 'Microlink'?
5. Are MRI scans safe with a cochlear implant?
6. Can I have an x-ray at the dentist?
7. Do I need to avoid magnetic toys or magnetic underlays?

Using a cochlear implant

1. Do I have to limit my sports activity? What about Scuba diving and swimming?
   No. For swimming you will need to remove the external component when you swim, much like you would have to remove a hearing aid. The internal part of the cochlear implant is not affected by water. For contact sports you should wear a helmet to protect your equipment. Boxing and other aggressive sports are discouraged. For Scuba divers, the internal implant is validated to withstand pressure at a depth of 25 meters (82 feet) underwater. However, it is recommended that you check with your surgeon or clinician before participating in a dive. There may be other medical conditions that you will need to consider.
2. How long do the batteries in the processors last?
   Batteries for the behind-the-ear model of sound processor typically last several days, whilst the rechargeable batteries used in the bodyworn processor normally last for one day. Generally if you are in noisy environments your sound processor works harder and therefore requires more battery power.
3. What type of batteries do the processors take?
   Behind-the-ear processors use small high-powered, zinc-air style batteries similar to those used in hearing aids, whilst bodyworn processors normally use rechargeable or standard AA or AAA batteries (depending on the model). Your Cochlear™ implant team will be able to suggest the best battery type for your processor.
4. What is a 'Microlink'?
   A 'Microlink' is a miniaturised Radio Aid (FM) system for hearing aid and cochlear implant users. The Microlink state-of-the-art receiver attaches directly to the sound processor, enhancing speech understanding, particularly in difficult hearing situations. This tiny receiver is compatible with Phonak's range of transmitters as well as those produced by other manufacturers. For more information refer to Phonak's website. Children wishing to take advantage of Mircolink technology may get funding via local education services, whilst adults can seek funding through a variety of different charitable and professional bodies.
5. Are MRI scans safe with a cochlear implant?
   The magnetic field in MRI scanners exerts force on any magnetic materials in the vicinity. This can be an issue for people with some cochlear implants, particularly those with a fixed magnet.
   If you have one of the Nucleus® 24 range of cochlear implants you can have and MRI scan;
   
   • up to 1.5 tesla leaving the magnet in place during the scan.⁴
   • over 1.5 tesla and up to 3.0 tesla by temporarily removing the magnet in a simple, outpatient procedure.

Cochlear is the only manufacturer that can offer you this exceptional level of MRI safety. Over 0.2 T and up to 1.5 T, a head bandage is applied. Refer to the warnings and precautions leaflet.

6. Can I have an x-ray at the dentist?
   Yes, cochlear implant recipients can have x-rays at the dentists.
7. Do I need to avoid magnetic toys or magnetic underlays?
   You can safely use these items as they have low magnetic strength.