Or maybe even just additions on the existing system. Liquids for instance. Honey and vinegar were both used as antiseptics, to clean wounds and keep them from getting infections in ancient times. - Maybe some honeyed bandages to boost healing rates of otherwise unremarkable gauze? (Honey wraps?) - Or boiling old bloody gauze in a cauldron to clean and disinfect them. (Possibly with the vinegar)
Just small musings.