Method for determining the positioning in deployed position of an implantable medical device after expansion in a vascular structure

Method for determining the positioning in deployed position of an expandable implantable medical device, or IMD, said medical device being intended to be deployed in a vascular structure (1), the method comprising, on the basis of a three-dimensional image of a region of interest comprising the vascular structure in which a positioning point (D) of the IMD has been defined, the following steps:

• determination (300) of a centreline (C) of the artery,
• positioning (400) of the IMD (M) according to an initial position, around the centreline (C),
• simulation (500, 800) of the final position (M) of the IMD after deployment, as a function of the stresses exerted by the walls of the vascular structure (1) on the IMD,
• wherein the determination (300) of the centreline (C) comprises placing points at different longitudinal positions along the vascular structure, so as to minimise a travel time of fluid along said points (Ci) between an input point (I) in the vascular structure and an output point (S) in the vascular structure,
• said points forming the centreline (C), and
• wherein the simulation of the final position of the IMD is carried out as a function of a level of longitudinal push-pull intended to be applied to the IMD during its implantation.