Developed at Indiana’s Purdue University, the prototype two-layered insole is made of polydimethylsiloxane, which is a type of silicone. Its bottom layer is actually a chamber that contains oxygen gas, while the top layer is laser-ablated to be particularly oxygen-permeable right at the point where the ulcer is located … The idea is that as the wearer walks throughout the day, placing pressure upon the insole, oxygen is continuously forced out of the bottom layer, up through the top layer and into the oxygen-deprived tissue of the ulcer – there, it helps accelerate healing. Even when they’re sitting, the patient’s foot will still exert enough pressure to deliver some oxygen to the wound … read more