Experts widely agree that penis pumps are effective in facilitating prolonged erections. Research highlights that individuals dealing with ED can achieve successful erections approximately 90% of the time using penis pumps. Furthermore, a significant 77% of those with ED and their partners express satisfaction with the benefits derived from these devices. The effects of using a penis pump can last for up to 30 minutes. 

Vacuum Erection Devices (VEDs) offer a non-surgical and injection-free method that effectively induces erections in many men, according to a board-certified urologist specializing in men's sexual health.

Studies also suggest that penis pumps contribute to maintaining penis size and function, and may help reduce shrinkage following prostate cancer surgery.

However, it's important to note that using a penis pump does not address the underlying causes of erectile dysfunction, as emphasized by a urologist specializing in penile implants.