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.