Cochlear implants are electronic devices that provide a sense of sound to individuals with severe to profound hearing loss. Unlike traditional hearing aids that amplify sound, cochlear implants directly stimulate the auditory nerve, allowing the brain to interpret electrical signals as sound. A common question among users and their families concerns the interaction of these devices with water. Understanding how cochlear implants handle water exposure is important for their longevity and functionality.
External Components and Water Exposure
The external sound processor is the part of a cochlear implant system most susceptible to water damage. These processors are generally not waterproof and require specific protection for water activities. Many models offer varying degrees of water resistance, rather than being fully waterproof. Water-resistant devices can withstand some moisture, such as light rain or sweat, but are not designed for prolonged submersion.
Manufacturers often categorize water protection levels using an Ingress Protection (IP) code. The first digit indicates dust protection, while the second refers to liquid ingress. An IP57 rating means the device is protected against temporary immersion in water, while IP68 signifies protection against continuous submersion under specific conditions. Users should consult their specific device’s rating, as water damage can be costly to repair and may leave an individual without hearing until fixed.
Internal Components and Water Safety
The internal component of a cochlear implant is surgically placed under the skin and is designed to be fully waterproof. Once the surgical site has healed, this implanted part is not affected by water exposure. This means the part beneath the skin is robust and durable against water.
Managing Water Activities
Individuals with cochlear implants can participate in water-related activities by taking appropriate precautions. The simplest approach involves removing the external sound processor before entering the water, ensuring the device remains dry and protected. For those who wish to hear while in or around water, manufacturer-approved accessories are available.
Specialized waterproof cases or sleeves are designed to encase the external sound processor, creating a watertight seal. These accessories allow for submersion in various types of water, up to certain depths and durations. Some modern sound processors, when used with these accessories, achieve an IP68 rating, enabling users to hear during activities like swimming. It is important to use rechargeable batteries with these waterproof accessories, as standard zinc-air batteries may not function in water.
Accidental Water Exposure and Care
If an external cochlear implant processor accidentally gets wet without proper protection, immediate action can help minimize damage. The first step is to turn off the device and remove the batteries. The processor should then be thoroughly dried using a soft cloth.
Placing the device in a drying kit or dehumidifier overnight is recommended to remove any residual moisture. It is important to avoid using heat sources, as this can cause further damage to the electronics. If the device does not function properly after thorough drying, contacting the manufacturer or an audiologist is advised.