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  • Title: Aerodynamic characteristics of the Provox low-resistance indwelling voice prosthesis.
    Author: Hilgers FJ, Cornelissen MW, Balm AJ.
    Journal: Eur Arch Otorhinolaryngol; 1993; 250(7):375-8. PubMed ID: 8286099.
    Abstract:
    The use of various prostheses for voice rehabilitation after total laryngectomy has become widely accepted in recent years. Two different types of prostheses can be distinguished: non-indwelling devices, which can be removed and replaced by the patient, and indwelling voice prostheses, which have to be removed and replaced by a physician. In this report we describe the in vitro measurement of the airflow dynamics of the recently developed Provox low-resistance, indwelling voice prosthesis. Airflows used in these experiments varied from 0.05 to 0.4 ls-1. With increasing flows, the trans-device air pressure against airflow rates increased from 0.28 kPa to 1.36 kPa, while the mean airflow resistance decreased from 5.6 to 3.4 kPa l-1 s-1. From these data and by comparison with data for other prostheses, the Provox voice prosthesis shows favorable airflow characteristics.
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