Apax-backed Vyaire Medical Inc., the leading pure play medical device company in the respiratory space, acquired Acutronic Group, a group of non-affiliated companies active in neonatal ventilation. Financial details have not been disclosed. Acutronic Group, consisting of Acutronic Medical Systems (Switzerland) and MIM Medizinische Instrumente & Monitoring, (Germany), is a global innovation leader in the area of neonatal ventilation.