No one likes to take an injection! But we all have to endure the pain and inconvenience and even the trauma caused by injections again and again. According to the James Advisory, researchers at Ohio State University draw inspiration from the way mosquitoes suck blood, and by studying the principle that mosquitoes pierce human skin without causing needle pain, they produce the idea of ​​painless microneedles.
Through research on existing science, the team found three ways in which mosquitoes can avoid pain while sucking blood. Mosquitoes secrete saliva, which contains proteins that make the skin feel numb. The mouth of a mosquito, or the part that draws blood, vibrates when it pierces the skin, reducing the amount of power required. The needle is serrated and makes it easier to pierce the skin (in fact, a needle that mimics this zigzag shape has been developed).
But the researchers discovered the fourth method through careful observation of the mosquitoes. The female Aedes vexan is the most common mosquito in North America. It has different stiffness in different parts of the needle and a relatively soft vicinity of the tip of the upper lip, which in turn reduces the force required to pierce the skin.
The price of this microneedle is high and it is not possible to use it in all situations, but it may be a good alternative for children or those who are afraid of injections or stings.
“We have the materials and technology to make this microneedle,†concludes Bhushan. “The next step is to find financial support to manufacture and test this device.â€
In Western economies, mosquitoes are disgusting creatures that can cause catastrophic consequences. Half of the world's population is at risk of malaria, and malaria is caused by mosquito bites and parasites. In 2015, 439,000 people died as a result of the disease.
Compared to such a huge death toll, the painless micro-needle inspired by mosquitoes appears pale and weak. But this is also a positive textbook provided by mosquitoes to protect health, although it is still in the theoretical stage.
Related content on this research has been published in the journal Journal of the Mechanical Behavior of Biomedical Materials.
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