Patent ID: 7316695

Claim:
Occlusion device ( 1 ) adapted to be introduced into a vessel ( 2 ), comprising two hollow expansible members ( 3 , 4 ) for securement of the device in bearing against two portions of the wall of the vessel ( 2 ), and an intermediate hollow portion ( 5 ), wherein the intermediate hollow portion ( 5 ) extends along a longitudinal axis ( 7 ) of the device between the two hollow expansible members ( 3 , 4 ), each end of the intermediate hollow portion ( 5 ) being joined to a respective one of the two hollow expansible members ( 3 , 4 ), the two expansible members being independently rotatable, and wherein the intermediate hollow portion ( 5 ) is deformed in torsion by relative rotational motion of the two expansible members to a degree adjustable according to the relative angular position of the two expansible members ( 3 , 4 ) to create a zone of maximum constriction ( 6 ) defining the degree of occlusion.