Medical & Dental

Blamey Saunders introduces 3D designed world first hearing aid

A “world first” modular, self-fittable hearing aid has been developed by Blamey Saunders Hears. The Australian hearing company headquartered in Victoria made the medtech breakthrough using 3D printing to deliver multiple design iterations.

Named the Facett, Blamey Saunders’ latest hearing aid has been designed with “human-centred design principles in focus,” and comes with the added functionality of smartphone control.

The Facett hearing aid. Photo via Blamey Saunders Hears.
The Facett hearing aid, featuring battery module (left) and core module (right). Photo via Blamey Saunders Hears.

Challenging social stigma

The Facett hearing aid was made in partnership with Extel Technologies, and Melbourne based RMIT University and Swinburne University. Together, the teams took it upon themselves to diminish social stigma associated with hearing loss.

Leah Heiss, a PhD researcher at Blamey Saunders, explains it was important “to understand, through empathy, the shame and embarrassment people feel when they have to deal with these medical apparatuses” when creating the design.

Leah Heiss holds the Facett. Photo via Blamey Saunders Hears.
Leah Heiss holds the Facett. Photo via Blamey Saunders Hears.

Redesigned for digital day to day use

Magnetic connectors on the aid allow the battery module to be swapped out in seconds, without the user having to remove the “core” module from their ears. This allows users to carry multiple batteries with them and avoids the often convoluted battery replacement procedures featured in other hearing aids.

Integration with an accompanying smartphone app improves the device’s usability. With this added feature, users can customise their hearing experience to isolate speech and reduce background noise, whilst a proprietary sound processor actively analyses the environment to make hearing as comfortable as possible.

In total, 130 prototypes of the Facett were made before reaching a final design, a process that would have taken much longer without the use of 3D printing.

Swinburne PhD candidate Jonathon Miegel adds, “The design and prototyping process was carried out in rapid iterations using a combination of computer-aided design software and various types of 3D printing.”

All 130 prototypes of the Facett are on display at the Melbourne Museum. Photo via Blamey Saunders.
All 130 prototypes of the Facett are on display at the Melbourne Museum. Photo via Blamey Saunders.

A history of medical aid

Due to the size and necessary customization aspect, hearing aids is one of the first truly profitable areas of 3D printing in medicine. Sonova introduced 3D printed hearing aids in 2001/2002, and has since updated these models with a 3D printed titanium device.

On a charitable basis, the Holy Land Institute for the Deaf and the volunteer organization 3DP4ME are also seeking to bring 3D printed hearing aids to disadvantaged populations in the Middle East, and researchers at the University of Maryland School of Medicine are working on using 3D printed prosthetic struts to restore hearing to those with damaged ossicles.

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Featured image shows the Facett hearing aid. Photo via Blamey Saunders Hears.

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