The device, known as RapeX, is a latex sheath embedded with shafts of sharp, inward-facing barbs that would be worn by a woman in her vagina like a tampon. If an attacker were to attempt vaginal rape, their penis would enter the latex sheath and be snagged by the barbs, causing the attacker excruciating pain during withdrawal and (ideally) giving the victim time to escape. The condom would remain attached to the attacker's body when he withdrew and could only be removed surgically, which would alert hospital staff and police. This device could assist in the identification and prosecution of rapists. Like most condoms, RapeX also usually prevents pregnancy and the transmission of HIV and sexually transmitted diseases.
RapeX was unveiled on August 31, 2005 in South Africa. Mass production was scheduled to begin in April 2007.
The concept of a vagina dentata is rooted in ancient myth, and had previously been explored in fiction, e.g. in Snow Crash by Neal Stephenson and in the 2007 film Teeth, directed by Mitchell Lichtenstein.
Ehler mentioned that she was inspired to create RAPEX(later renamed to Rape-aXe) when a patient who had been raped stated, "If only I had teeth down there." This comment may have been a reference to the myth.
Critics have objected to Ehlers's invention as "vengeful, horrible, and disgusting" and oppose its planned sale in drugstores.
Some have also expressed concern that the device could be worn for consensual sex as part of a malicious act of revenge or cruelty. Others have argued that since the wearer of the condom exhibits no visible signals that she is using the condom, there is no visible deterrence for a prospective attacker, which adds to criticisms that the device is vindictive rather than preventive.
Ehler has responded to such criticism in the FAQ section of her website, stating that, "As with everything in life there will be negative attitudes and I can't be responsible for people who refuse to educate men and feel the device is medieval," and responds by calling the RapeX "a medieval device for a medieval deed."
Others fear that use of the device could possibly enrage an attacker and further jeopardize the victim. Ehler's response to this is as follows: "Sadly, many women have been killed over time, as nobody can guarantee the outcome of any rape! However, the huge plus-factor is that the discomfort and pain is such that the rapist would be disabled temporarily, giving you time to get away and get help."
The FAQ also addresses several other common concerns, such as that rapists will feel the device ("When a rapist attacks, he loses control of his senses. He will become aware of the device when it is too late") and whether he will easily cut it off himself ("No. The latex cannot be cut easily, the hooks are embedded in the skin and it is extremely difficult to remove.")