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Related Experiment Videos

Experiments in surgical voice restoration using valve prostheses.

P Karschay, F Schön, J Windrich

    Acta Oto-Laryngologica
    |March 1, 1986
    PubMed
    Summary

    Effortless tracheopharyngeal speech in laryngectomees depends on prosthesis design and tissue contact. Optimizing prosthesis diameter and slit length, alongside minimizing tissue obstruction, is key for improved voice quality.

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    Area of Science:

    • Speech Pathology
    • Biomedical Engineering
    • Otolaryngology

    Background:

    • Tracheoesophageal speech (TES) is a method for voice restoration after laryngectomy.
    • The quality of TES can vary significantly among individuals.

    Purpose of the Study:

    • To identify factors influencing airflow resistance in tracheoesophageal prostheses.
    • To assess the impact of prosthesis design and tissue interaction on voice quality.

    Main Methods:

    • Analysis of airflow resistance in various tracheoesophageal voice prostheses.
    • Evaluation of 132 laryngectomees' speech quality.
    • Identification of key prosthesis parameters affecting flow resistance.

    Main Results:

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  • Prosthesis diameter and slit length are critical determinants of flow resistance.
  • Different valve prostheses exhibit significant variations in flow resistance.
  • Contact between the prosthesis and surrounding tissues substantially impacts voice quality.

    • Conclusions:

    • Low-flow resistance in a voice prosthesis is essential but not solely sufficient for easy phonation.
    • Minimizing tissue contact with the pharyngeal end of the prosthesis is crucial for optimal voice quality.
    • Surgical techniques to create a low-resistance vibratile upper airway are important for voice restoration.