Complex sentence: The tracheotomy has become a life-saving procedure for many patients: an incision is made in the trachea, creating an airway or a site for a tracheal tube to be inserted.
Split into simpler sentences: The tracheotomy has become a life-saving procedure for many patients. It consists of making an incision in the trachea, creating an immediate airway or a site for a tracheal tube to be inserted.