Patent ID: 9220877
Filing Date: 2015-12-29
Classification: A61M

Abstract:
1. A method of draining cerebral spinal fluid (CSF) from multiple sites within the brain with a first catheter having a proximal end and a distal end, said first catheter having at least one opening adjacent to said distal end; a second catheter having a proximal end and a distal end, said second catheter having at least one opening adjacent to said distal end; and a drainage catheter having a proximal end and a distal end; said method comprising the steps of: placing said proximal end of said drainage catheter in fluid communication with said proximal end of said first catheter and said proximal end of said second catheter; placing a first one-way valve in fluid communication with said first catheter between said proximal end and said at least one opening such that said first one-way valve permits fluid flow from said at least one opening to said proximal end with approximately zero opening pressure, and said first one-way valve effectively blocks fluid flow from said proximal end to said at least one opening; placing a distal end of the first catheter in the brain spaced from the ventricles; placing a second one-way valve in fluid communication with said second catheter between said proximal end and said at least one opening such that said second one-way valve permits fluid flow from said at least one opening to said proximal end with approximately zero opening pressure, said second one-way valve effectively blocks fluid flow from said proximal end to said at least one opening; and placing a distal end of the second catheter in one of the ventricles of the brain.