Smart bandages – a developing promising work at Stanford University

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Researchers of Stanford University created a smart bandage that uses electrical stimulation and biosensors to speed up the wound-healing process. The new bandages also can monitor the progression of wound healing using wireless circuitry and temperature sensors.They are 25 percent faster than traditional methods by stimulating tissue to speed up recovery, at the same time reducing scar formation. It’s a good solution for treating chronic wounds and benefitial if used on patients with suppressed immune systems. If the wound is less healed or an infection is detected, the sensors inform a central processing unit to apply more electrical stimulation across the wound bed to accelerate tissue closure and reduce infection. The electronic layer, including a microcontroller unit (MCU), radio antenna, memory, electrical stimulator, biosensors, and other components, is just 100 microns thick. Electrical stimulation limits bacterial infections and prevent the development of biofilms on wound surfaces, to proactively promote tissue growth and help with tissue repair. It also increased the amount of white blood cell populations, namely monocytes and macrophages, through the recruitment of greater amounts of M2 anti-inflammatory macrophages.

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In this stage of development some challenges remain, including need to increase the size of the device to human scale, reducing cost, and solving long-term data storage issues. There are potentially new sensors not currently integrated that might be added, such as those that measure metabolites, biomarkers, and pH.