To use vacuum therapy, a man begins by applying a jelly on the base of the penis that helps to create an airtight seal. Then he attaches the cylinder to the penis and activates the vacuum pump which forces blood into the penis, giving him an erection. Vacuum therapy is only used by a man who is ready for sex.
According to Cornell University, the vacuum device is an effective way to treat erectile dysfunction and can be used by men with no long-term effects. The FDA has approved it for regular use, but some men suffer side effects such as bruising and penile pain when the device is improperly used or used too frequently.