What is a vacuum constriction device?
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.
The VCD consists of an acrylic cylinder with a pump that may be attached directly to the end of the penis. A constriction ring or band is placed on the cylinder at the other end, which is applied to the body. The cylinder and pump are used to create a vacuum to help the penis become erect. The band or constriction ring is used to help maintain the erection.
From: Erectile Dysfunction: Vacuum Constriction Devices WebMD Medical Reference
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