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Related Experiment Videos

An implantable electromagnetic sound source for speech production

M V Griffiths, J M Fredrickson, D P Bryce

    Archives of Otolaryngology (Chicago, Ill. : 1960)
    |November 1, 1976
    PubMed
    Summary

    Researchers developed an implantable electromagnetic device for speech after laryngectomy. Early canine studies show promising biocompatibility and function, paving the way for human trials in patients unable to achieve esophageal speech.

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    Area of Science:

    • Biomedical Engineering
    • Otolaryngology
    • Speech Science

    Background:

    • Vocal rehabilitation after laryngectomy remains challenging, with existing methods having variable success and complication rates.
    • Current solutions for speech production post-laryngectomy are limited, particularly for patients who cannot develop esophageal speech.

    Purpose of the Study:

    • To develop and evaluate a novel implantable electromagnetic device for speech production in dogs.
    • To assess the biocompatibility, durability, acoustic properties, and efficiency of the electromagnetic speech device.

    Main Methods:

    • Development of a porous coated stainless steel electromagnetic device implanted in the retropharynx of dogs.
    • Energizing the device using an external oscillator for speech production.

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  • Investigating material biocompatibility, device durability, and speech characteristics (noise quality, intensity, efficiency).

    • Main Results:

    • Favorable biocompatibility of the implantable electromagnetic device was observed in canine models.
    • The system demonstrated promising durability, noise quality, intensity, and overall efficiency for speech production.
    • The developed electromagnetic device shows potential as a viable vocal rehabilitation tool.

    Conclusions:

    • The implantable electromagnetic device represents a promising advancement in vocal rehabilitation following laryngectomy.
    • Favorable preclinical findings support the transition to a clinical trial for patients with failed esophageal speech.
    • This technology offers a potential new solution for speech restoration in laryngeal cancer survivors.