The Venus II was invented by Rick Gellert, with the assistance of Valentin Tsitrin, a Russian engineer.
[7] Gellert has written: ...It seems male desire for sexual activity ranges from needing an orgasm once in many weeks to wanting several in a day.
It consists of a main box linked to a cylindrical "receiver" that fits over the penis by a connecting hose.
The "receiver" superficially resembles the teat cup of a milking machine, and contains an inner and outer chamber separated by a cylindrical flexible rubber liner.
Unlike a milking machine, the other end of the Venus 2000's inner chamber is not connected to a suction hose, but instead covered by a cap that contains a one-way valve that leads to the open air.
[9] A significant amount of personal lubricant is needed to be added within the liner for the machine to operate correctly.