Patent ID: 9433518
Filing Date: 2016-09-06
CPC Classification: A61B,A61F

Claim Text:
1. A method for treating a bifurcation or trifurcation aneurysm occurring on a first artery, the first artery and a second artery joining to a third artery, the method comprising: inserting a medical device into the first and third arteries; radially expanding the medical device into apposition with inner surfaces of the first and third arteries; and positioning the medical device such that when expanded, a membrane of the medical device is located against a neck of the aneurysm to obstruct blood flow into the aneurysm, the membrane being secured to the medical device to maintain the position of the membrane relative to the medical device; wherein the membrane is permeable and porous, the size of the pores of the membrane and the ratio of the material surface area of the membrane being such that blood supply to perforators and/or microscopic branches of main brain arteries is permitted to improve healing of the first artery but blood supply to the aneurysm is reduced.