Vacuum constriction devices are manual penis pumps that consist of a cylinder and a constriction ring. The cylinder creates a vacuum around the penis, while the ring is placed at the base to maintain the erection.

Are manual penis pumps suitable for all individuals, or are there any restrictions?

Manual penis pumps are generally safe for most individuals; however, they may not be suitable for those with certain medical conditions such as Peyronie's disease or priapism. It is advisable to consult a healthcare professional before using a manual penis pump.

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