"Passy Muir® Tracheostomy & Ventilator Swallowing and Speaking Valve is a simple life-changing medical device used by tracheostomy and ventilator patients. When placed on the hub of the tracheostomy tube or in-line with the ventilator circuit, the Passy Muir® Valve redirects air flow through the vocal folds, mouth and nose enabling voice and improved communication." Also aids in "Voice/Speech Production, Improved swallowing, Secretion management, Oxygenation, Restores positive airway pressure, Weaning, Decannulation, Olfaction, Infection Control, Pediatric Speech/Language Development, Quality of Life." - Passy-Muir.com