This is a device invented by Sonnette Ehlers, a medical technician working in South Africa. The anti rape female condom, which is inserted by the woman like a tampon, has 'teeth' on the inside of the device that will get stuck on and any man who tries to rape her. He would have to have it removed in an emergency room.
She recalled a rape victim telling her that she only wished that "she had teeth down there" which is what inspired the creation of the device.
Soon after Rape-Axe (Rapex) was created however, critics started to call the device 'barbaric' and archaic and even medieval.
I think that a man taking advantage of a womyn's freedom (especially in that manor) is archaic and medieval.
What are your thoughts?
