*Prosthitic devices for swalloing*
voice prosthesis( plural prostheses) is an artificial device, generally made of silicone that's used in confluence with voice remedy to help laryngectomized cases to speak. During a total laryngectomy, the entire voice box( larynx) is removed and the windpipe( trachea) and food pipe( esophagus) are separated from each other. During this operation an opening between the food pipe and the windpipe can be created . This opening can also be created at a after time( secondary perforation). This opening is called a tracheo- esophageal perforation( TE perforation). The voice prosthesis is placed in this opening. also, it becomes possible to speak by clogging the stoma and blowing the air from the lungs through the inside of the voice prosthesis and through the throat, creating a voice sound, which is called tracheo- esophageal speech. The aft end of the prosthesis sits at the food pipe. To avoid food, drinks, or slaver from coming through the prosthesis and into the lungs, the prosthesis has a small delirium at the reverse. There are two ways of fitting the voice prosthesis through the mouth and throat( retrograde manner) with the help of a companion line, or directly through the tracheostoma manner. currently, utmost voice prosthesis are placed anterograde, through the stoma.
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