With a new contraceptive, one day, to avoid pregnant women six months, experts have revealed.
One-use patch should be applied to the skin to work in seconds.
Once the skin patch is placed, it breaks the microwave and appears underneath the skin of the woman.
Small needles are not painful and they are made with the same soluble dots that are used in surgery, so it absorbs the body.
In a few months, the needles are able to release the contraceptive drug that enters the bloodstream.
This patch could be more effective than today's choices: remembering the need for a woman to take a pill every day.
Also, it may be better known than other long-term contraceptives, such as a coil or implant, which must be implanted or injected by a doctor or a nurse.
However, the patch is still underway in the first phase and so far only mice have been tested.
Professor Mark Prausnitz at the Georgia Institute of Technology in Atlanta said: "It's very interesting to give more opportunities for high-frequency contraceptives.
"Our goal of self-regulating women with a microscope agreed upon with a long-term contraceptive microscope will be applied to the skin every five seconds."
Prof. Prausnitz has stated that the goal is to create enough hormones to artificially emit every six months.
His team used the same micronedle technology to manage the vaccines.
A clinical event was carried out on a clinical trial of the flu vaccine in Emory University.
This study could lead to insect safety problems that could be used to provide vaccination.
Because microwaves are very small, only the upper layers of the skin and the volunteers involved in the study of bird flu do not complain about pain.
But Prof. Prausnitz admitted more research and trials to see how anticonulators work in humans.
"Because we are using the concept hormone well, we have optimism that the patch will be an infertility," he said.
"We hope that the possible footprint of the skin is minimal in the patch application, but these expectations must be checked in clinical trials."
If new patches are approved for use, they may be the first self-administrations and do not require any regular injection.
So far, mice tests have only measured hormone levels and do not allow the patch to prevent pregnancy.
But scientists have developed a human patch version that they want to try.
Prof. Prausnitz said: "It is of great interest to minimize the number of health needs.
"For this reason, a contraceptive case lasting more than a month is desirable, especially in women with limited access to health.
"But they are microneedles because, by definition, they are limited, how many boundaries can be included in a patch."
Gregory Kopf, a member of Family Health International, said: "The micro-cancer patch is an exciting improvement in women's health.
"Self-management and long-acting contraception will provide women with a strict and comfortable control of fertility, which will have a positive impact on public health to reduce unwanted and unadjusted pregnancies."
While the cost has not yet been established, Prof. Prausnitz said that patch was cheap for use in expensive countries.
The research was published in Nature Biomedical Engineering.
This story appeared in The Sun and was re-released with permission.