The ultra-fine injection penetrates the skin and is painless.

Scientists have conducted trials of a vaccine injection that could completely replace metal needles.The new technology is made from a soluble material, meaning that when placed on human skin, the drug/vaccine will dissolve immediately.

The new vaccine is administered simply by placing a small medical swab on the thumb, allowing the vaccine to be absorbed into the skin. This injection method could reduce the spread of disease, improve vaccine effectiveness, and save costs.

Currently, most vaccines are injected directly into the skin or muscle. However, this method requires high expertise, is expensive, can easily lead to errors, and many people are afraid of or dislike being injected with metal needles.

Scientists assert that this application is as effective as, or even more effective than, injections using metal needles. In experimental injections, including three flu shots, none caused any undesirable side effects.

Previous attempts to develop microneedles relied on silicon or metal. However, these were not safe and could sometimes break within the skin, leaving fragments. Since the invention of needles made from biodegradable materials, injecting medication through the skin has become safer.

Previously, researchers at the National University of Singapore also invented a bandage with embedded micro-needles that can help deliver drugs such as insulin, painkillers, and even collagen into patients' bodies faster and with less pain.

These bandages are fitted with dozens of ultra-fine needles, each only 0.6 mm long, that easily penetrate the skin. This allows the medication to be absorbed through the skin and reach deep into the patient's body.

Kang Lifeng, a researcher at the Faculty of Pharmacy, National University of Singapore, said: “It’s just like a patch, but inside it contains tiny needles. It only takes 5 minutes for the medication to fully penetrate the skin.”

These kinds of bandages would be helpful for many people, especially those with diabetes who frequently have to receive injections and experience pain.

According to khoahoc.tv