Atrion Corporation, together with its subsidiaries, develops, manufactures, and sells products for fluid delivery, cardiovascular, and ophthalmic applications in the United States, Canada, Europe, and internationally. The company's fluid delivery products include valves that fill, hold, and release controlled amounts of fluids or gasses for use in various intubation, intravenous, catheter, and other applications in the anesthesia and oncology fields, as well as promote infection control in hospital and home healthcare environments. Its cardiovascular products comprise Myocardial Protection System that delivers fluids and medications, and mixes critical drugs, as well as controls temperature, pressure, and other variables; cardiac surgery vacuum relief valves; silicone vessel loops for retracting and occluding vessels; and inflation devices for balloon catheter dilation, stent deployment, and fluid dispensing, as well as products for use in heart bypass surgery. The company's ophthalmic products consist of a line of balloon catheters, which are used for the treatment of nasolacrimal duct obstruction in children and adults. It manufactures products for safe needle and scalpel blade containment; inflation systems and valves used in marine and aviation safety products; components used in inflatable survival products and structures; and one-way and two-way pressure relief valves that protect sensitive electronics and other products during transport in other medical and non-medical applications. The company sells its products to physicians, hospitals, clinics, and other treatment centers; and other equipment manufacturers through direct sales force, independent sales representatives, and distributors. Atrion Corporation was founded in 1944 and is headquartered in Allen, Texas.