Vacuum erection devices for Peyronie's disease: what does the science show?

The treatment is known as vacuum erection device (VED) therapy, or vacuum pump therapy. Devices (such as the SomaCorrect or Osbon ErecAid) consist of a clear plastic cylinder placed over the penis, connected to a manual or battery-operated pump.

Peyronie's disease involves a buildup of hard scar tissue in the tunica albuginea—the elastic, protective casing inside the penis that fills with blood to create an erection.

The VED pump draws air out of the cylinder, creating negative pressure (a vacuum) that gently pulls blood into the penis. This creates an erection and applies a consistent physical stretch to the restrictive scar tissue. This mechanical force helps to soften the plaque, remodel the collagen, and physically stretch and straighten the penis.

Yes, clinical studies indicate that vacuum therapy can successfully improve or stabilise penile curvature. Systematic reviews and cohort studies show that men who opt for VED therapy see far better curvature resolution compared to those who have no treatment at all, who often see their curvature worsen or remain the same.

In one clinical study, men using a vacuum device experienced a reduction in curvature of between 5 and 25 degrees. Another cohort study tracking men opting for non-invasive management showed an average curvature improvement of 23 degrees. These improvements are generally achieved with a protocol of using the device for 10 minutes, twice a day, over a 12-week period.

Because it takes time to physically remodel the rigid scar tissue, you will not see changes overnight. Consistent daily use is required, and measurable improvements in penile length, curvature reduction, and pain relief are typically evaluated after 12 weeks of therapy.

While vacuum therapy can effectively stabilise or improve the condition, Peyronie's disease is a complex connective tissue disorder. Some men find long-term satisfaction and manage to avoid surgery entirely, while others may eventually need further intervention if the curve does not improve adequately to allow for comfortable intercourse.

Because this is an at-home, ongoing physical therapy, "retreatment" usually takes the form of escalating to surgery if the device alone is insufficient. It is not a guaranteed cure for everyone; in one study of 31 men, 51% (16 men) were satisfied with the VED outcome and avoided further procedures, while the remaining 49% (15 men) ultimately elected to undergo surgical correction.

Vacuum therapy is widely considered safe for all stages of Peyronie's disease. Systematic reviews, retrospective analyses, and clinical trials consistently report no major complications or adverse effects associated with its proper use.

Vacuum devices are an established treatment for erectile dysfunction, and they offer the same benefits here. Research shows that VED therapy improves scores on standard erectile function questionnaires, reduces pain, and helps recover stretched penile length (with one study showing a median total length increase of 1.5 cm).

• Surgery: Surgery is the most definitive way to correct severe curvature, but it is invasive and frequently results in a permanent loss of penile length. VED therapy is non-invasive and can actually increase length, but the curve correction is less absolute. Notably, using a VED for three months before and one month after surgery significantly improves surgical outcomes and patient satisfaction by preserving length and preventing recurrent deformities.
• Injections: When VED therapy is combined with plaque-dissolving injections (like collagenase clostridium histolyticum) and daily medications (like tadalafil), patients experience significant synergistic improvements. A 2025 study showed that this multimodal approach improved baseline curvature by over 21% while significantly boosting erectile function.

A vacuum device suits a man who wants to try something non-invasive and inexpensive before committing to injections or surgery. It is also used around straightening surgery, where a device worn for three months beforehand and one month afterwards improved the surgical result and helped preserve length. As with traction, it asks for daily use over months, and that is where most men stop.

The evidence supporting VED therapy is moderate to strong. It is backed by systematic reviews, retrospective cohort studies, and randomised controlled trials evaluating its use as a standalone stretching therapy, a surgical adjunct, and a combination therapy. The trials are small, and more are needed before the size of the benefit — and how it compares with mechanical traction — is settled.

A vacuum device is safe, inexpensive and worth trying early. The honest limits are that the curvature evidence is cohort work rather than large randomised trials — reported gains run anywhere from 5 to 25 degrees — and that length preservation is the more dependable of its claims. Twenty minutes a day for several months is the price, and in one series of 31 men only about half were satisfied enough to avoid going on to a procedure.