Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Larynx – trachea – tracheobronchial prosthesis or combination...
Patent
1993-11-05
1996-04-16
Brittingham, Debra S.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Larynx, trachea, tracheobronchial prosthesis or combination...
623 11, A61F 220
Patent
active
055078095
ABSTRACT:
A voice prosthesis includes a cylindrical body for placement in an opening formed in the tracheoesophageal wall. The body has a first end lying on the esophageal side of the tracheoesophageal wall when the prosthesis is placed in the opening and a second end lying on the tracheal side of the tracheoesophageal wall. The body provides a passageway for airflow from its second end to its first end to provide alaryngeal speech-producing airflow from the esophagus. A first backflow-preventing valve controls the passageway to prevent the flow of fluids from the esophagus through the passageway to the trachea. A second backflow preventing valve is provided in series with the first backflow-preventing valve to prevent flow of fluids from the esophagus through the passageway to the trachea in the event of incompetence of the first backflow-preventing valve in the open or partially open orientation.
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Brittingham Debra S.
Hansa Medical Products, Inc.
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