Founded in 1976, SOPHYSA is a French company that pioneered the development of adjustable neurosurgical valves, the most advanced type of valve for the treatment of hydrocephalus. These valves enable neurosurgeons to adjust operating pressure non-invasively according to the patient's clinical needs. Two adjustable valves are produced by Sophysa: the Sophy® Mini valve, which was the world's first adjustable valve, launched in 1985, and the Polaris® valve, the first MRI-stable adjustable valve. In addition to a comprehensive range of neurosurgical implants, SOPHYSA offers a continuous intracranial pressure measurement system for patients suffering from head trauma, hydrocephalus and hematoma. The Pressio® intracranial pressure monitoring system is a user-friendly monitor with a range of catheters for measuring intracranial pressure and temperature.