It seems very small. There doesn't seem much advantage in healing such small wounds 30% faster. It doesn't seem like a sure thing that it can scale to larger wounds; will it be able to generate the same amount of electricity over a larger area? Also it seems like it would help only with surface wounds; it doesn't seem like it will help with deeper wounds were healing speed would matter more. Then we have to consider factors such as costs. Does the marginal utility justify the extra costs? But who knows, maybe there is a very specific niche for this.
Just because a wound is small doesn’t mean it’s easy to heal. I had a foot wound that took over a _year_, and that was staying off my feet 95% of the time.
For those suffering from diabetes, small wounds can become a very big deal. Even without diabetes, depending on the wound location, it cannot heal in time (say for example a cut on your dominant hand's index finger which one would use very often and mechanically breaking the healing process) and risks infection.
