Ventil zum Einsatz in einer Leitung zum Fuehren einer Fluessigkeit

EP 2221083 A1 UPAB: 20100908 NOVELTY - The valve (7) has a low pressure-valve seat (10) co-operating with a valve body (13) such that the valve is closed below a liquor-pressure lower limit. The valve is opened between the liquor-pressure lower limit and an upper limit. The valve is closed during exceeding the liquor-pressure lower limit and falling below the liquor-pressure upper limit. The valve remains in a closed condition for a predetermined time period during exceeding the liquor-pressure lower limit. The valve is opened during exceeding liquor-pressure upper limit. USE - Medical valve for use in a line for guiding liquid i.e. liquor, from a body cavity i.e. cerebral ventricle, of a hydrocephalus patient. ADVANTAGE - The valve is designed such that discharge of unnecessary liquor from the cerebral ventricle is avoided