| 摘要 |
PURPOSE: An invisible condom is provided to enable a male to conveniently wear the condom on the glans in order to prevent pregnancy. CONSTITUTION: An invisible condom is constituted as follows. The invisible condom includes a pipe and an ear-muff sponge(1). The pipe has 2mm diameter. The condom is installed inside the glans of a male. The semen of the male is absorbed into the condom. The condom prevents the semen from entering the womb of a female.
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