A contactless electromagnetic implantable middle ear device for sensorineural hearing loss

Area of Science:

• Biomedical Engineering
• Neuroscience
• Otolaryngology

Background:

• Sensorineural hearing loss affects millions globally, with limited treatment options for moderate to severe cases.
• Current treatments often involve external devices or invasive surgeries with varying success rates.

Purpose of the Study:

• To develop and test a novel contactless electromagnetic hearing device for potential treatment of sensorineural hearing loss.
• To evaluate the feasibility and efficacy of the device through acute and chronic animal experiments.

Main Methods:

• Development of precision micromechanics and electronics for a contactless electromagnetic hearing device.
• Successful implantation in cats for acute experiments, with ongoing chronic studies in cats and rabbits.
• Utilizing a highly efficient air core coil to vibrate a neodymium-iron-boron magnet attached to the incus.
• Hermetic sealing of implanted components, including hybrid circuits and solid-state electronics, via laser welding.

Main Results:

• The developed system generates sufficient force to vibrate the magnet implanted on the incus.
• Successful acute implantation in feline subjects demonstrated device feasibility.
• Ongoing chronic animal experiments are evaluating long-term component performance and biocompatibility.

Conclusions:

• The contactless electromagnetic hearing device is a viable prototype for addressing sensorineural hearing loss.
• The technology demonstrates potential for treating moderate to severe hearing impairments.
• Further chronic studies are crucial for validating long-term safety and efficacy in animal models.