A battery-powered ambulatory device designed to precisely drive the plunger of a syringe down its barrel to infuse a solution when it must be administered with a high degree of volume accuracy and rate consistency; it is not dedicated to insulin infusion. Sometimes referred to as a portable syringe driver, it consists of a small unit with a syringe driving mechanism. It is used with a suitable injection/infusion set for delivery of small/finite volumes via an intravenous, subcutaneous, arterial, epidural or intracavital route. It is typically worn in a case attached to the belt or carried in a pocket and may be worn by the patient within and outside healthcare settings.