A system for the treatment of erectile dysfunction includes a pubic pad devised to be worn upon the pubis of a user in conjunction with an inflatable constriction member. The pubic pad creates a mated, airtight seal with the mouth of a vacuum tube. The inflatable constriction member may be inflated via an air tube accommodated within a transverse duct in the pad. Inflation of the constriction member is therefore enabled while the vacuum is instated and after tumesecnce is induced, to sustain maximum engorgement before the vacuum is released. Once the ring is inflated, the vacuum may to be released, the pad removed, leaving the constriction ring in place upon the erect penis to sustain the erection during intercourse.