How does the healing jutsu work?
Medical ninjutsu can be used to heal wounds, such as those cause by kunai. It is used for a number of purposes, including:


Healing: Healing Chakra Transmission, Healing Resuscitation Regeneration Technique
Treating internal and external injuries: Mystical Palm Technique
Treating poisons: Delicate Illness Extraction Technique
Performing autopsy or surgery: Chakra Scalpel
Healing oneself: Creation Rebirth, Strength of a Hundred Technique
Offensively in several ways: Body
Pathway
Derangement,
Poison Mist Needle
Shot.