In a quiet lab in College Station, a blister could one day be stopped from becoming a life-altering wound—thanks to a bandage that breathes life into damaged tissue. At Texas A&M’s College of Veterinary Medicine and Biomedical Sciences, Dr. Cristine Heaps and her team are pioneering a device that delivers hydrogen sulfide—a gas naturally made in the body—directly to chronic wounds, where healing often stalls. For people with diabetes or poor circulation, a minor cut can spiral into severe complications, including infection, tissue death, and even amputation. The new technology, developed in collaboration with biotech company Exhalix, could change that trajectory by restoring blood flow exactly where it’s needed.
Chronic wounds affect millions worldwide, particularly those with diabetes, where impaired circulation starves tissues of oxygen and nutrients. Standard treatments clean and protect wounds but don’t address the root problem: poor blood flow. That’s where the H2EALS™ device steps in. Resembling a wearable patch, it uses a disposable cartridge to generate controlled amounts of hydrogen sulfide gas right at the wound site. This targeted delivery triggers vasodilation—widening blood vessels—and stimulates angiogenesis, the formation of new blood vessels, both of which are essential for healing. Because the gas is applied locally, it avoids the dangers of systemic exposure, such as dangerous drops in blood pressure.
The science behind it is as elegant as it is precise. Hydrogen sulfide, often associated with the smell of rotten eggs, is actually a vital signaling molecule in the body. In healthy tissues, it helps regulate blood flow and inflammation. But in chronic wounds, its production falters. The H2EALS™ system restores that signal exactly where it’s missing. Early tests show the gas remains concentrated at the wound, with minimal diffusion into the bloodstream—making it both effective and safe. The device is autonomous, attachable directly to dressings or skin, and designed for consistent, long-term use.
“If we can improve healing in these hard-to-treat wounds, it could make a real difference,” says Dr. Heaps, who leads the Department of Physiology and Pharmacology at VMBS. “People are losing limbs to wounds most of us would never think twice about.” That reality hits hard: in the U.S. alone, someone undergoes a diabetes-related amputation every 30 seconds. This innovation isn’t just about closing a wound—it’s about preserving mobility, independence, and quality of life.
Published in the Journal of Biological Engineering, the research marks a leap forward in regenerative medicine. With further development, the H2EALS™ device could become a standard tool in wound care, especially for patients with vascular challenges. As clinical trials progress, the hope is clear: one day, a simple patch could prevent a lifetime of pain.