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Amazon.com: Tracheostomy Speaking Valves | Passy-Muir PMV 2001 (Purple) Low Profile - Lower Resistance Tracheostomy & Ventilator Swallowing and Speaking Valve : Health & Household
Omar Bani Mustafa on LinkedIn: What is a Passy Muir Speaking Valve? Invented by a patient named David…
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Amazon.com: Tracheostomy Speaking Valves | Passy-Muir PMV 2001 (Purple) Low Profile - Lower Resistance Tracheostomy & Ventilator Swallowing and Speaking Valve : Health & Household
![Airflow pathway during breathing when valve is attached to external... | Download Scientific Diagram Airflow pathway during breathing when valve is attached to external... | Download Scientific Diagram](https://www.researchgate.net/publication/258039708/figure/fig1/AS:601641527042070@1520453926986/Airflow-pathway-during-breathing-when-valve-is-attached-to-external-opening-of.png)