Erectile dysfunction is incredibly common, affecting more than 30 million American men. Yet, despite its prevalence, it can still be a difficult issue for men to experience, admit to, or seek treatments for. Men may feel their sex life is over and their manhood is in question. But, with vacuum therapy, nothing can be further from the truth. How does a penis pump help with ED? Penis pumps, or vacuum-assisted therapy devices, can produce firm, satisfying erections that can bring pleasure to both you and your partner. The following describes how to use a penis pump and what you need to know to get started.