| Voice Rehabilitation Methods |
1. Tracheoesophageal Speech Details Voice Prosthesis is a device equipped between the trachea and esophagus. The suitability of equipment is decided by the doctors. Voice prosthesis user need to cover the tracheostoma, usually with thumb or index finger to direct the air to the canal of the voice prosthesis. Then the air is directed to the upper part of the esophagus and acted as the source of the simulated vocal chink. Sounds produce with different mouth and tongue combinations. 2. Electrolaryngeal Speech Details  Electrolarynx requires batteries to vibrate the drum of the electrolarynx. Electrolarynx user only needs to put the top part of the electrolarynx in appropriate position, often side of the neck or under the jowl. Voice produces when the button of electrolarynx is pressed on and mouth and tongue properly perform. This voice production method does not need to concern the flow and the amount of the air because the source of the vibration of the drum inside the electrolarynx comes from the batteries. 3. Pneumatic Speech Details Pneumatic speech device is an external assistant speech aid. It has two ends; one side is a rubber tube likes a drinking straw. The tube puts inside the mouth and place between the teeth and the chin. The other end is to cover the tracheostoma, so as to direct the air into the simulated vocal cord inside the pneumatic speech device. Voice produces when the mouth and tongue properly perform. 4. Esophageal Speech DetailsEsophageal speech depends on inhalation or injection of air. Air inhaled or injected from the tracheostoma and ejected through the esophagus to the mouth. The ejection of air vibrates the muscle walls between pharynx and esophagus to produce sounds. Sound produces with the combination of mouth and tongue properly perform. Tools Demo (video) |
