Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Larynx – trachea – tracheobronchial prosthesis or combination...
Patent
1983-06-30
1986-09-09
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Larynx, trachea, tracheobronchial prosthesis or combination...
A61F 220
Patent
active
046106910
ABSTRACT:
Voice prosthesis devices of known type to be inserted into a surgical fistula communicating between the trachea and esophagus of a laryngectomized patient have included a one-way valve that permits channeling air from the trachea into the esophagus of the wearer while preventing flow of esophageal material into the trachea. Heretofore, the one-way valves in certain of such prosthesis devices were in the form of a flap-type check valve having a membrane-like flap or disc anchored at a segment of the margin to the interior or intraluminal surface of a tubular housing. The present invention provides an improvement in such voice prosthesis devices in the form of a novel way of anchoring the membrane-like flaps or discs to the tubular housings whereby when the prosthesis devices are manufactured in commercial quantities the method of attachment provides a uniform resistance to airflow for each prosthesis formed of corresponding production components. The pre-determined and uniform resistance to airflow offered by the one-way valves of the present invention is consistently equal to, less than, or greater than the resistance offered by the normal larynx to suit the individual need of the patient.
REFERENCES:
patent: 155667 (1874-10-01), Painter
patent: 249557 (1881-11-01), Trueseale
patent: 2378613 (1941-12-01), Young et al.
patent: 3628565 (1971-12-01), McWethy
patent: 3957046 (1976-05-01), Harris
patent: 4137117 (1979-01-01), Jones
patent: 4435853 (1984-03-01), Blum et al.
Depel William A.
Moon Jerald B.
Weinberg Bernd
Apley Richard J.
Bivona Surgical Instruments, Inc.
Prizant James
Purdue Research Foundation
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