The present invention concerns a self-expanding implant device comprising a proximal portion at a first longitudinal end, a distal portion at a second longitudinal opposite the first longitudinal end, and a connecting portion between the proximal portion and the distal portion, wherein the proximal portion and the distal portion each comprise a radially self-expanding structure, wherein the connecting portion comprises longitudinally oriented bendable struts, preferably at least 4 struts, more preferably 6 struts or more, which connect theself-expanding structure of the proximal portion with the self-expanding structure of the distal portion, wherein in a fully expanded state, the implant device comprises a maximum implant diameter along a direction perpendicular to the longitudinal direction and wherein the struts of the connecting portion comprise a strut length along the longitudinal direction,characterized in that the strut length is such that when the self-expanding structure of the proximal portion is in a compacted state and the self-expanding structure of the distal portion is not constrained radially, the self- expanding structure of the distal portion reaches a semi-expanded state comprising a diameter which is at least 60% of the maximum implant diameter.La présente invention concerne un dispositif d'implant auto-déployable comprenant une partie proximale sur une première extrémité longitudinale, une partie distale sur une seconde extrémité longitudinale située à l'opposé de la première extrémité longitudinale, et une partie raccord entre la partie proximale et la partie distale. La partie proximale et la partie distale comprennent chacune une structure auto-déployable radiale, la partie raccord comprenant des entretoises pouvant être courbées orientées longitudinalement, de préférence au moins 4 entretoises, de préférence 6 ou plus de 6 entretoises, qui relient la structure auto-déployable de la partie proximale à la structure auto-déployable de la parti
