
• Mechanical stretching devices, which "employ weights or lines tied to other parts of the body such as the knee, to affect tension on the penis. • Vacuum operating devices, "those employing a sealing principle in the area of the base of the penis and an evacuation mechanism to drop the atmospheric pressure around the penis, thereby affecting increased blood flow." • Constrictive rings, which "constrict the base of the penis after erection has been achieved and cause the erection to be maintained by blocking the normal circulation of blood from the penis." • Supportive devices, which "function as a splint or cradle in order to maintain a resemblance of turgidity."



