Assertion: voice prosthesis | /r/HasAspect | a one-way valve
Facets:
value: near the esophageal flange
type: LOCATION
Source sentences:
text: A voice prosthesis has a one-way valve near the esophageal flange that enables pulmonary air to pass into the esophagus and pharynx for sound production and prevents content from the food pipe, such as liquids or saliva, from entering the trachea.