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No tongues please

作者:韦确    发布时间:2019-03-07 10:09:11    

By Barry Fox Animals insist on licking their dressed wounds, says Mark Anderson of Spring Valley, Wisconsin—so he’s come up with a simple solution (WO 99/31972). The wound is dressed with a laminated plaster that has adhesive on the bottom and exposed electric strip contacts on the top surface. A small battery built into the plaster delivers a low voltage to the exposed strips. When the animal licks the dressing, its tongue and saliva close the circuit between the contacts, creating a tiny current that makes its tongue tingle,

 

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