“A parasitic worm that latches onto the intestines of fish by inflating its head has led to a remarkable invention for keeping skin grafts in place, even when the surface of the wound is wet. US researchers devised a patch studded with tiny cone-shaped needles as a replacement for surgical staples, a potential source of tissue damage and infection. The needles are made of a stiff core made of plastic and a tip that is rigid when dry but swells up on contact with water in surface tissue. Within 10 minutes, the tips are plumped up and secure the patch firmly on the skin, clamping grafts on burns and other injuries.”
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