The authoritative WebMD site has an article Erectile Dysfunction: Vacuum Constriction Devices:

A vacuum constriction device (VCD) is an external pump with a band on it that a man with erectile dysfunction can use to get and maintain an erection.


Studies suggest that about 50%-80% of men are satisfied with the results of VCDs. As with any other method of treatment for erectile dysfunction (ED), satisfaction rates may decrease with time.

The article doesn't cite any study or reference. Is the 50-80% statistic accurate?

  • 2
    Worth noting: "satisfied with results" is not necessarily "results were statistically meaningfully different from placebo" (due to sensitivity of the topic I'll refrain from explaining plausible mechanisms)
    – user5341
    Sep 17, 2015 at 18:20
  • 1
    @user5341, would you like to elaborate on your comment and make it into an answer?
    – Graviton
    Sep 18, 2015 at 2:20


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