An intraoral self-contained artificial larynx

Area of Science:

• Otolaryngology
• Biomedical Engineering
• Speech-Language Pathology

Background:

• Approximately 33-50% of patients undergoing total laryngectomy experience unsatisfactory voice outcomes.
• A significant number of patients remain aphonic or rely on traditional artificial larynx devices for communication.
• Existing artificial larynx solutions may present limitations in terms of usability or sound quality.

Purpose of the Study:

• To introduce a novel, miniaturized artificial larynx system.
• To evaluate the efficacy and user-adaptability of this new device.
• To provide an improved communication aid for post-laryngectomy individuals.

Main Methods:

• Development of a miniaturized artificial larynx integrated with dental prostheses.
• Powering the device with two hearing aid batteries for extended use (over 100 hours).
• Clinical trials involving patients who previously used other artificial larynx devices.

Main Results:

• The artificial larynx achieves a sound pressure level output exceeding 100 dB at the source.
• Users demonstrated rapid adaptation to the new device, with some reporting enhanced freedom of movement.
• The device offers a prolonged operational life from readily available hearing aid batteries.

Conclusions:

• The miniaturized, dental-prosthesis-mounted artificial larynx represents a significant advancement in voice restoration technology.
• This device offers a powerful, long-lasting, and user-friendly communication solution for aphonic patients post-total laryngectomy.
• Further adoption and research can enhance quality of life for individuals affected by laryngeal cancer and surgery.