Researchers have developed an affordable bandage that uses an electrical field to speed up wound healing. The bandage has already been tested on animals and healed wounds 30% faster. This could make life better for millions of people — and also save a lot of money in hospitalization costs. Chronic wounds are a bigger problem than you think. Chronic wounds, such as diabetic ulcers, venous leg ulcers, and pressure sores, affect approximately 2% of the U.S. population. They are not only painful and difficult to deal with but can lead to complications and amputations — or worse. Chronic wound trea…