Our technology is based on an integrated self-powered wearable module
for effective care of chronic wounds. Among them, the functional compon
ents include (1) nanogenerators, which can directly convert energy such a
s body movements and body heat into electricity, and the output can be c
ontrolled between 1 and 30 volts, which is suitable for stimulating chronic
wounds and promoting their healing; another feature is: pulse output, pulse duration and frequency can be controlled, suitable for different chronic
wounds. (2) Smart dressing for infection prevention, containing bismuth t
elluride nanoplates as thermoelectric catalysts, can produce low-concentr
ation hydrogen peroxide of only uM when the difference between the env
ironment and body temperature is only 5 degrees, without harming norm
al cells and tissue, it helps the wound to avoid infection. (3) Wound monit
oring APP. different wounds (like infected wound) and normal skin will hav
e different resistance values, especially during the healing process of chro
nic wounds, the resistance value will gradually increase, approaching nor
mal skin, so that we can establish different calibration curves of the woun
d can be used to know the healing status at any times without tearing the
dressing, destroying the new tissue, and exposing the wound to the risk of
infection; the signal transmission is through the Bluetooth system, which
means that we can know remotely the degree of wound healing from time
to time.
In the future, it can further target more complex types of wounds suc
h as venous ulcers, ischemic wounds or keloids, which not only provides p
atients with a new type of personalized wound care, but also provides a n
ew direction for the development of wearable medical devices.