The invention relates to a heart implant comprising an attachment element (2), particularly a tubular attachment element for attaching a sheath (4), preferably having a sheath (4) being coaxially positioned around at least a part of the attachment element (2) and fixed to it, the attachment element (2) having a lower end (2a) and an upper end (2b) and several strips (3) at least at one of the ends, preferably being split into several strips at least at one of the ends (2b), preferably only at the upper end (2b), the strips (3) forming an expandable anchoring cage, particularly for fixing the heart implant to a lumen of the heart, preferably the atrium, by surface contact between an exterior surface of the expandable cage and an interior lumen surface, the strips (3) of the anchoring cage ending in respective strip tips (7) at the end of their extension in the compressed state, particularly during delivery through a catheter (1), the strip tips (7) forming the distal or proximal end of the implant, particularly a distal end being released first out of the catheter, wherein the implant furthermore comprises a fixation means (5, 6) to which each respective strip tip (7) is releasable fixed, preferably furthermore comprising a releasing means (9) for releasing the connection between fixation means (5, 6) and strip tips (7).L'invention concerne un implant cardiaque comprenant un élément de fixation (2), en particulier un élément de fixation tubulaire pour la fixation d'une gaine (4), présentant de préférence une gaine (4) qui est positionnée de manière coaxiale autour d'au moins une partie de l'élément de fixation (2) et qui est fixée à celui-ci, l'élément de fixation (2) présentant une extrémité inférieure (2a) et une extrémité supérieure (2b) et plusieurs bandes (3) au moins en l'une des extrémités, de préférence divisée en plusieurs bandes au moins en l'une des extrémités (2b), de préférence uniquement au niveau de l'extrémité supérieure (2b), les bandes (3) formant u
