Well, I can't speak from experience concerning your condition, but vapor is much kinder to the lungs. I couldn't take smoke anymore, but have been vaping away for years now.

For you, I'd recommend the Purple-Days vape (purple-days.com). It's great for medical users. Extremely efficient due to the very small bowl and that also allows you to take measured hits. The vape is almost indestructable and without even a temp control (not needed, believe me), there's nothing to fail. Best buy on the market IMO at $150.