Adjustable hydrocephalus valve for pressure compensation in the cranium of a hydrocephalus patient by drainage of excess cerebral liquor into the peritoneum or heart comprises a spring and a mechanically and percutaneously activated brake

摘要

Adjustable hydrocephalus valve comprises a spring (10) determining the valve pressure and adjusted by an adjusting mechanism having a pivoting or rotating part that is moved externally using a magnet (2, 3) so that the spring is tensioned or relaxed. A mechanically and percutaneously activated brake prevents unintentional adjustment movements on its activation and allows adjusting movements on its deactivation. A process is also claimed. Preferred Features: The device has a self-activating spring-loaded brake, which is deactivated on relaxation of the spring pressure.