Before invisible-in-canal (IIC) devices were introduced, CIC hearing aids were the smallest custom solutions available. Each CIC hearing aid is designed to fit almost entirely inside the ear canal, making them discreet with only the faceplate and battery drawer visible. An extraction cord is typically added to help with insertion and removal of the device.

Benefits

• Despite their small size, CIC hearing aids deliver more power than expected and suit mild to moderate hearing losses.
• The microphone location inside the canal supports natural acoustics and helps with telephone use and sound localization.
• Many brands now provide CIC hearing aids with Bluetooth functionality and rechargeable options, allowing users to choose wireless or rechargeable features, though this may slightly increase the device size.
• At Tomore, CIC hearing aids can be equipped with BLE functionality for app-based fitting, but they do not support streaming or phone calls.

Limitations

• A single omni-directional microphone makes them less effective in environments with background noise.
• The user’s ear anatomy must be adequate to house the internal components. Not suitable for users with limited vision or dexterity.
• They require more maintenance and can be affected by earwax near the microphone port.
• Their smaller surface area increases the likelihood of feedback or loosening during talking or chewing.
• As with all custom devices, CIC hearing aids may need occasional re-shelling due to changes in the ear canal shape, which requires new ear impressions and is not covered under warranty.