A new device for taking blood samples uses microneedles and a suction cup instead of a large needle. People with a phobia of needles stand to benefit. More blood can be obtained than with the classic finger prick, making diagnostic measurements more reliable.
Because the device can be produced at low cost, it is also suitable for developing countries.
After leeches have attached themselves, they penetrate the host's skin with their teeth. To suck blood from the wound, they create negative pressure by swallowing. The new device works in a very similar way: A suction cup measuring about two and a half centimetres is attached to the patient's upper arm or back. Within the cup are a dozen microneedles that puncture the skin when pressed against it.
In the current version of the leech-like device, the suction cup is made of silicone and the microneedles concealed within are made of steel. However, the researchers are in the process of developing a new version made using fully biodegradable materials to create a sustainable product.The researchers have tested their new device on pigs, and they have made comprehensive manufacturing information.
Blood Clots Anemia Heart Disease Pests And Parasites Developmental Biology Agriculture And Food Behavioral Science
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