Suction helps heal wounds?
MIT Grad Student Danielle Zurovcik (above) designed this hand-powered suction device to speed up wound healing. It costs $3 and it works.
Nobody knows precisely why it works, but doctors have known for decades that the healing process for open wounds can be greatly speeded up by applying negative pressure — that is, suction — under a bandage sealed tightly over the affected area. The speculation is that it helps by drawing bacteria and fluid away from the wound, keeping it cleaner….