Patent ID: 8512396

Claim:
A device for treating a blood circulation conduit ( 14 ), comprising: an implant ( 20 ) for placing in the conduit ( 14 ), the implant ( 20 ) that comprising a tubular endoprosthesis ( 30 ) with an axis (X-X′) having a framework ( 36 ) which is radially deployable between a contracted state and a dilated state, the framework ( 36 ) having an outer surface ( 40 ) delimited axially by an axial edge ( 44 ), and at least one interposition member ( 24 ) which is more flexible than the framework ( 36 ), the interposition member ( 24 ) being mounted movably on the endoprosthesis ( 30 ) for interposition between the outer surface ( 40 ) and the conduit ( 14 ); and a deployment tool ( 26 ) for deploying the implant ( 20 ), the deployment tool ( 26 ) being configured to adopt a configuration for insertion of the implant ( 20 ) in the conduit ( 14 ), in which the deployment tool ( 26 ) holds the framework ( 36 ) in the contracted state, and a configuration for release of the implant ( 20 ), in which the framework ( 36 ) adopts the dilated state, wherein, in the configuration for insertion, the interposition member ( 24 ) comprises at least one free part ( 68 ) that is held axially away from the outer surface ( 40 ) beyond the axial edge ( 44 ) to minimise the radial dimension of the implant ( 20 ), the free part ( 68 ) being at least partly displaceable against the outer surface ( 40 ) when the deployment tool ( 26 ) moves from the configuration for insertion to the configuration for release, wherein the interposition member ( 24 ) comprises a flexible peripheral skirt ( 60 ) having a connection edge ( 64 ) fixed to the endoprosthesis ( 30 ) and a free edge ( 66 ), the skirt ( 60 ) being displaceable between a configuration of reduced radial dimension in which the free edge ( 66 ) is placed axially away from the axial edge of the outer surface, which the skirt ( 60 ) adopts in the configuration for insertion, and a turned-down configuration that is turned down against the outer surface, which the skirt ( 60 ) adopts in the configuration for release, and wherein the interposition member further comprises at least one radial sealing cushion ( 62 ) which projects radially relative to the skirt ( 60 ) and is attached to an outside of the skirt ( 60 ) along the free edge ( 66 ) of the skirt ( 60 ).