I have one! I did a trial on it in January after I had pneumonia. I only use it at night. (I do 30 minutes of vest in the am and then in the pm 15 minutes of vest followed by 15 minutes of the Electro Flo). I LOVE it! I have no idea about pneumonothorax, but you could avoid that area if you are worried.
Two things I have noticed:
- If I decide to skip it and just do 30 minutes of the vest at night, I am coughing more the next day.
- When I had pneumonia, I had the characteristic rusty colored sputum. I would sit for 15 minutes on the vest and not cough up a thing, or else cough up normal colored sputum. With the percussor, the rusty stuff from my bases was coming up because I was able to focus on that area. The company is great to work with. I would talk to your doctor about the safety and then ask for a 30 day trial.