An expandable
stent (1) to enhance the supply of blood to downstream tissue which is being supplied with blood through a diseased
intracranial artery (100) with a
stenosis (102) formed therein by plaque with a bore (103) therethrough. The expandable
stent (1) comprises first and second end portions (3,4) joined by a central portion (5). The central portion (5) is configured in the expanded state of the
stent (1) to be 10 located in the bore (103) of the
stenosis (102) with the first and second end portions (3,4) abutting non- diseased parts (104,106) of the
artery (100) adjacent the proximal and distal ends (105,107) of the
stenosis (102) for anchoring the stent (1) in the
artery (100). The central portion (5) with the stent (1) in the expanded state is configured to apply a radial outwardpressure to the stenosis (102) such that the
diameter of the bore (103) of the stenosis (102) is maintained at its current
diameter or increased to 15 approximately 50% of the non-diseased parts (104,106) of the
artery (100).