Nothing negative about cheaper treatment for open wounds

For some reason, and nobody knows exactly why, the healing process for open wounds can be sped up by applying suction to them under a tightly-sealed bandage. The negative pressure this creates has been benefiting patients for decades but because mechanical pumps are expensive and they need a constant electricity supply the technology is not readily available, often where it is needed most – in the developing world. A newly developed basic negative pressure pump that doesn’t require electricity, is cheap to manufacture, lightweight to transport and can be left in place for days could change that.

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