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Related Experiment Videos

Artificial larynx prosthesis: comparative clinical evaluation.

J L Henley-Cohn, J N Hausfeld, G Jakubczak

    The Laryngoscope
    |January 1, 1984
    PubMed
    Summary

    This study introduces a new laryngeal prosthesis to improve esophageal speech for laryngectomy patients. Clinical trials show prosthesis choice significantly impacts speech quality, intelligibility, and fluency.

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    Area of Science:

    • Laryngology
    • Speech Pathology
    • Biomedical Engineering

    Background:

    • The Singer-Blom voice prosthesis enabled esophageal speech after laryngectomy but presented challenges.
    • Common issues include prosthesis extrusion, delayed speech initiation, leakage, stoma obstruction, and low voice volume.

    Purpose of the Study:

    • To introduce and evaluate a second-generation laryngeal prosthesis designed to overcome existing clinical problems.
    • To compare the speech performance of the new prosthesis against currently available devices.

    Main Methods:

    • A clinical trial was conducted comparing three different voice prostheses in laryngectomy patients.
    • Speech generated by each device was evaluated, with video recordings used for illustration.
    • Key speech parameters assessed included intelligibility, fluency, volume, and patient preference.

    Main Results:

    • The new prosthesis design minimizes extrusion and offers a one-size-fits-all solution.
    • Significant variations in speech quality were observed, critically dependent on the chosen prosthesis.
    • The second-generation device demonstrated potential for improved speech outcomes.

    Conclusions:

    • Prosthesis selection is a critical factor influencing the success of esophageal speech post-laryngectomy.
    • The improved design of the second-generation laryngeal prosthesis addresses key limitations of earlier devices.
    • Further research and clinical adoption of optimized prostheses can enhance communication for laryngectomy patients.

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