What is a penis pump

A penis pump is a cylinder that is fitted over the penis, with a manual or motorized pump to create suction. As the apparatus creates a vacuum around the penis, blood is drawn into the penis, helping it to become engorged. As vacuum increases, the difference between the inner blood-preasure and the pump preasure increases as well; excessive pressure causes vascular damage rather than a harder penis.


A penis pump with a transparent cylinder

Penis pumps, usually described in this context as vacuum pumps, have use in conventional treatment of impotence. The pump itself is essentially as described above, although often made to higher standards of quality with a much higher price, and arrangements for distribution by suppliers of medical equipment. One or more flexible compression rings, comonly called cock rings, are fitted on the open end of the cylinder, then an erection is created by pumping. Then the rings are pushed by hand onto the base of the erect penis before releasing the vacuum. This enables the erection to be held even in the presence of problems of the vascular or nervous system which would otherwise lead to immediate loss of erection. In the best circumstances erections can be maintained for a considerable time, but manufacturers' literature recommends that, for safety, rings should be removed after no more than 30 minutes. Having rough sex can also result in the bursting of a blood vessel.

Pumping must be done very carefully to avoid injury. Over-enthusiastic pumping can burst blood vessels and form blisters. In some cases the testicles can be unexpectedly pulled into the cylinder and cause severe pain and injury. It is also believed that the rim of the cylinder can cut into the skin and over time cause damage to the ligaments surrounding the penis. Impatiently pumping without reading explanatory material can produce too much suction .