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Mini tinker is a minimally invasive surgical tool that looks like a syringe. There is a bandage which likes an umbrella folded up in the needle tube. Doctors only need to target the wound and insert the needle into the patient's skin so that he can start to repair the wound. Needle will expand the bandage when the needle tube enters into the body, and it will be separated from the bandage and retracted into the needle tube when the bandage is fully expanded. The bandages will be absorbed by the body after the wound being healed. It will not cause bleeding and serious damage to the skin, just as easy as an injection.