Is it safe? Brown A. The tube is placed over your penis, and then the pump is used to suck out the air inside the tube.
Related Erectile dysfunction: Endocrine Practice. How much physical activity is needed to maintain erectile function? Silva AB, et al.
Because the needle used is very fine, pain from the injection site is usually minor. It creates a video image to let your doctor see if you have blood flow problems. Mayo Clinic, Rochester, Minn.