shuntanordning for transport of cerebrospinalvetska from a kella for such vetska in the body to a selected stelle in the body

摘要

A shunt system is disclosed for treating hydrocephalus by transporting cerebrospinal fluid from a source of such fluid to a selected site in the body of the patient, wherein the fluid is conducted through tubing in which a pressure-operated check valve is included, and connected in series with that valve is a second valve including gravity-operated means effective to urge the second valve to closed position until a higher pressure is reached when the patient is in substantially vertical position and to permit the valve to open freely when the patient is in substantially horizontal position, thus compensating for the pressure drop and consequent siphoning of fluid which would otherwise occur when the patient moves from horizontal to vertical position.