Clinical studies have proven that vacuum erection devices can give instantly harder erections, cause temporary flaccid enlargement and can increase permanent penis augmentation. According to the American Urological Association, these devices may also be useful in cases where such PDE5 drugs as Viagra have failed to work! (Sorry for the US stats, cant seem to find good Canadian data) . Doctors view the penis pump as a safe, effectual and cost effective treatment for erectile dysfunction and state that the prolonged use of these devices may enhance the size of the penis permanently. Other advantages of using a pump may include delayed ejaculation, improvement of sexual appetite, boosting of testosterone, the maintenance of longer and harder erections and the supporting of penile tissue after prostate surgery. Bulb Pump