Release date: 2013-02-04
When you mention an injection, people will naturally think of the pain that the needle sticks to the body, but this situation may become history. According to the British "Daily Mail" website reported on January 29, researchers from the Massachusetts Institute of Technology recently announced that they have successfully developed a vaccine similar to the tattoo, through the micro-needle embedded multi-layer polymer film into the skin The epidermis layer slowly releases the vaccine. This kind of injection device called "microneedle" can avoid the pain when injecting drugs.
The vaccine looks like a tattoo, with multiple rows of microneedles on the surface. The microneedle is 250 microns in diameter, which is about 2-5 times the thickness of the human hair.
Researchers say that injections using microneedles not only reduce pain, but are also safer, so it is expected to be a new generation of injection methods. In addition, the device can be used for DNA injections of more dangerous diseases such as AIDS.
When using a microneedle, it is necessary to first place the drug in a "microneedle block" composed of a plurality of tiny needles, and then press the "microneedle block" on the patient's skin, and the drug penetrates into the skin through a very small needle. It is delivered to the patient as quickly as the tattoo. Since the microneedle does not damage the superficial skin nerve endings and blood vessels, the patient does not feel pain.
Darryl Owen, a professor of bioengineering at the Massachusetts Institute of Technology who led the study, said: "This method will replace the current vaccine syringe and it will take only a few minutes to get into the body, and the microneedles can be withdrawn. â€
One researcher also said that the microneedle injection method is also suitable for the injection of DNA vaccine, which reduces the pain of the patient at the injection. “We are able to directly control the vaccines implanted by microneedle injection, so this method will likely be used to inject vaccines that are used to boost human immunity.â€
Researchers are currently looking for ways to increase the efficiency of microneedle injection through animal testing.
Source: Kexun
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