Patent ID: 9675457
Date: 2017-06-13
CPC Classifications: A61B,A61F,A61M

Claim:
1. A method of treating cerebrospinal venous insufficiency to treat the symptoms of multiple sclerosis, comprising the steps of: identifying a human patient having at least a partial obstruction at a site in a vein of a venous outflow track from the brain; removing the obstruction; and implanting a first valve in the vein in fluid communication with the site, to permit venous outflow and reduce retrograde pressure; wherein the valve comprises a self expandable tubular support having a radially outwardly extending projection having a deployed outside configuration such that the projection deforms a wall of the vein and wherein the implanting step comprises implanting the first valve in the vein such that the wall of the vein deformed by the projection provides an interference fit with a foramen in the base of the skull through which the vein extends to resist migration of the valve within the vein.