tib means medicine
nabawi is a term refered to hadis which hadis defines as whatever related to the Prophet Mohammad SAW either concern to his action, word,
so tibb nabawi could be refered to words and actions of the Prophet Mohamad SAW with a bearing on disease, treatment of disease and care of patient.
medical treatment practised by others on the Prophet, his medical treatment on himself or other/someone else, or medical teatment practised by someone else observed by the Prophet without any objections
basically, the prophet medical teaching were --specifir place, time and population
is applicable in all time, place and population.