SIU Division of Urology 
Phone: 217-545-8000
Fax: 217-545-7305 
Email: urology@siumed.edu  
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Vacuum Constriction Device (VCD/VED)

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.

Vacuum Erection Devices

The vacuum erection device is great by itself or used in conjunction with oral medications. The pump draws blood down into the penis resulting in an erection. When a constrictive band is applied, the erection may be used for sexual intercourse. The pump may also be used for penile rehabilitation before and after prostate surgery. Preoperative use of the pump increases blood flow to the area. Increased blood flow may assist in the healing process, decreasing length of healing time. Use postoperatively decreases scar tissue formation. With prostate surgery, scar tissue may form resulting in “shrinkage” of the penile shaft. As this is an unwanted side effect of surgery, exercising the penis with the vacuum device may reduce the amount of scar tissue formed, preventing “shrinkage”.