Patent ID: 8870809
Filing Date: 2014-10-28
Classification: A61M

Abstract:
1. A hydrocephalus shunt drainage valve configured to be installed in a subcutaneously implantable shunt for draining cerebrospinal fluid from the brain of a patient with hydrocephalus, said valve comprising: a housing being configured to house cerebrospinal fluid; said housing comprising an inlet being configured to be operatively connected to the brain of a patient with hydrocephalus to permit drainage of cerebrospinal fluid from the brain of the patient into said housing; said housing comprising an outlet being configured to permit drainage of cerebrospinal fluid that was drained from the brain of the patient out of said housing; a valve arrangement disposed in said housing and configured to control flow of liquid through in said housing; said valve arrangement comprising a non-return closure and a displaceable element; said non-return closure comprising an inlet side and an outlet side; said non-return closure being configured to open upon liquid pressure on said inlet side being at or above liquid pressure on said outlet side, to thereby permit cerebrospinal fluid being drained from the brain of the patient to flow into said housing via said inlet; said non-return closure being configured to close upon liquid pressure on said inlet side being below liquid pressure on said outlet side, to thereby prevent drained cerebrospinal fluid from flowing back to the brain of the patient via said inlet; and said displaceable element being configured to be displaced upon exertion of a force on said displaceable element during supply of a medicament liquid into said housing, to thereby: