Patent ID: 8435204
Filing Date: 2013-05-07
Classification: A61M

Abstract:
1. A method for ameliorating a symptom of cerebral vasospasm in a patient, said method comprising: selecting a patient having the symptom of cerebral vasospasm; removing cerebrospinal fluid from a first location in a lumbar cerebrospinal fluid space of the patient; removing at least one of erythrocytes, hemoglobin, oxyhemoglobin and endothelin from the removed cerebrospinal fluid, thereby conditioning the cerebrospinal fluid at a flow rate; and returning the conditioned cerebrospinal fluid to the patient at a second location in a cervical cerebrospinal fluid space or ventricle of the patient, wherein the cerebrospinal fluid is returned to the patient at substantially the same flow rate at which it is removed; wherein the removing and returning steps are performed concurrently using a catheter having a first lumen with a first proximal port at the first location and a second lumen having a second distal port at the second location during at least a portion of a conditioning treatment.