Researchers at RMIT University have developed a smart wound dressing that can both monitor the condition of a wound and automatically release therapeutic agents. According to the researchers, the technology could contribute to better treatment of chronic wounds, a problem that places a significant strain on healthcare systems worldwide.
Chronic wounds often require long-term and intensive care, during which the condition of the wound can change constantly. Smart wound dressings that detect infections or deliver medications already exist, but combining both functions into a single, simple system has proven technically challenging until now. The results of the research have been published in the journal Chemical Engineering Science.
Multifunctional nanoparticles
The research team developed a method in which so-called carbon dots, very small, multifunctional nanoparticles, are incorporated into a hydrogel bandage. These biocompatible nanoparticles can detect changes in the wound and simultaneously act therapeutically as so-called nanozymes.
When the pH of a wound changes due to an infection, the dressing changes color. This change can be read by portable smart devices. As soon as the system detects signs of infection, therapeutic nanozymes are automatically released to combat inflammation and promote healing.
In addition to the automatic response, the release of therapeutic agents can also be manually activated by applying light pressure to the dressing. This allows healthcare providers or patients to administer additional treatment when necessary. According to first author Nan Nan, a PhD candidate at RMIT, this combination of functions can contribute to faster intervention in wound infections. “Being able to address potential infection at the earliest opportunity is critical to chronic wound management, making this real-time system a potential game-changer for healthcare.”
Simpler Design
According to the researchers, a key advantage of the new system is its relatively simple production. Integrating carbon dots into a hydrogel creates a scalable design that is easier to produce than many existing prototypes of smart wound dressings.
Dr. Haiyan Li of RMIT’s School of Engineering emphasizes that this increases the likelihood that the technology can actually be translated into clinical practice. “Many smart wound dressings developed in research laboratories are difficult to translate into real clinical products because they rely on complex designs or expensive sensing systems,” she says.
Clinical Application
The current results are still based on laboratory research. The next step involves more extensive biological testing and validation in appropriate wound models. The researchers are also seeking collaboration with industry partners to further develop and scale up the technology.
Ultimately, the researchers aim to integrate the smart dressing into a broader digital healthcare environment. In this context, data from the dressing can be automatically collected and analyzed to support healthcare providers in clinical decision-making and the management of chronic wounds.
3D-printed patch
Researchers at the University of Mississippi recently started developing a 3D-printed patch for the treatment of chronic wounds, such as diabetic ulcers and pressure ulcers. The patch consists of a custom-made, breathable scaffold that gradually releases biodegradable antimicrobial agents. This is intended to prevent infections and support the natural healing process.
Chronic wounds often heal poorly due to reduced blood flow and oxygen, which promotes bacterial growth. The new patch is based on chitosan, a natural polymer that stimulates cell growth, inhibits inflammation, and has antimicrobial properties. In addition, plant-based antibacterial agents have been added, which can reduce the risk of antibiotic resistance.
According to the researchers, this approach offers advantages over traditional wound patches because it does not require organic solvents. The technology could provide a new, more effective treatment method for hard-to-heal wounds.
