New shoe insole could help treat diabetic foot ulcers

Researchers have developed a shoe insole that could help make the healing process more portable for people who develop ulcers as a result of diabetes.
Diabetic ulcers commonly result from high blood sugar damaging nerves, which takes away feeling from the toes or feet. Without the ability to feel pain, hits and bumps tend to go unnoticed and skin tissue breaks down, forming ulcers.
A lot of sugar in the bloodstream, along with dried skin as a result of diabetes, further slow the ulcer healing process.
The researchers used lasers to shape silicone-based rubber into insoles, and then create reservoirs that release oxygen only at the part of the foot where the ulcer is located.
In a paper published in the journal Materials Research Society Communications, the team said the insole can deliver oxygen at least eight hours a day under the pressure of someone weighing about 53-81 kg. It can also be customised to take on any weight, the study said.
The team envisions a manufacturer sending a patient a pack of pre-filled insoles customised to his or her wound site, based on a “wound profile” obtained from a doctor’s prescription and a picture of the foot.
A patent is pending on the insole technology. The team is currently seeking corporate partners. (IANS)