Researchers have created a smart bandage that uses electrical currents to speed up wound healing.
Using electrical currents to stimulate tissue, scientists have created a smart bandage that heals wounds 25 percent faster than traditional methods. Stanford University published a paper on November 24 in Nature Biotechnology, in which they present their work on the wireless, high-tech bandage.
This smart bandage uses wireless circuits and temperature sensors to monitor the progress of wound healing by measuring electrical currents and temperature.
According to researchers, the high-tech device provides faster wound closure, increases blood flow to injured tissue and significantly improves skin repair by reducing scar formation.
Sensors in the bandage can detect when a person's wound is infected or has not healed and will then apply more electrical stimulation to the area to speed tissue repair and reduce infection rates.
Biosensors in the smart bandage can monitor changes in the surrounding area and give a detailed, current reading of the wound – how it is progressing and whether it is infected. These biosensors sent data to the researchers' smartphone, allowing them to monitor the sensor data in real time, without wires .
According to the study abstract, the researchers found that their wound care system is effective in monitoring skin resistance and temperature in mouse wounds and delivering electrical stimulation as needed. In preclinical wound models of the mouse groups, the group that received the treatment healed about 25 percent faster compared to the other group.
The smart bandage not only treats wounds but also protects them while they heal, Yuanwen Jiang, the study's first author and a postdoctoral researcher at Stanford's School of Engineering.
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“This is not a passive tool. It actively heals chronic wounds and has the potential to change the paradigm of care in their treatment.”
Scientists conducted research to discover why and how electrical stimulation promotes wound healing. They found that the activation of pro-regenerative genes, such as Selenop (an anti-inflammatory gene) and Apoe (a gene that has been shown to increase muscle and soft tissue growth), is promoted by electrical stimulation. In addition, electrical stimulation not only boosted white blood cell counts overall, but also specifically the monocyte and macrophage. Since these cell types play an important role in various phases of wound healing, this could have important implications for patients.
Additionally, because they help reduce inflammation and scarring around wounds, they can also help improve patient comfort during recovery periods, as well as reduce long-term damage caused by scarring or persistent inflammation at wound sites.
“This smart patch not only speeds up the healing process, but it also allows us to monitor the wound as it heals,” explained Artem Trotsyuk, first author of the study and currently chairman of the Department of Surgery and professor ofBiomedical Engineering at the University of Arizona in Tucson.
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The researchers cautioned that the smart patch is still in the proof-of-concept stage and still faces some issues. As for obstacles, they said they need to make the device bigger, reduce the cost, and find a way to store data long-term. Before they can mass-produce the device, they will need to fix these issues. They also said they could add other sensors to the device, including those that measure metabolites and other biomarkers.
Some potential problems with clinical use include hydrogel rejection —when the skin reacts badly to the device—and biological fouling of the sensors, which can cause discomfort.
Despite some difficulties, the researchers are continuing their work and remain positive about the possibility that their smart patch could provide relief to patients suffering from chronic wounds.
Smart bandages are changing the way we think about wound care and can provide patients with faster and more effective treatment options than ever before, thanks to innovative design and the use of electrical currents to stimulate natural healing processes in cells around wound sites.
Source: dailymail.co.uk
