Possible penile therapy for ed

My erectile dysfunction came on slowly and became very noticeable around 2009. I have tried Viagra, Cialis, Edex injections, and pumps. All "fixes" were through the VA. Although I notice slight temporary improvement, nothing corrects the problem.

I am a non-smoker but I do take blood pressure meds every day along with meds for anxiety and a major depressive disorder (clinical depression). 

My wife supports me concerning my ED but I can tell she suppresses disappointment. At 72, I don't experience many pleasures of life. I hope you can help me.