04610691 is referenced by 10 patents and cites 7 patents.

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.

Title
Voice prosthesis device
Application Number
6/509963
Publication Number
4610691
Application Date
June 30, 1983
Publication Date
September 9, 1986
Inventor
Jerald B Moon
West Lafayette
IN, US
Bernd Weinberg
West Lafayette
IN, US
William A Depel
Lowell
IN, US
Agent
McDougall Hersh & Scott
Assignee
Bivona Surgical Instruments
IN, US
Purdue Research Foundation
IN, US
IPC
A61F 2/20
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