Tissue transfer device (1) comprising a tubular structure (2) with a lumen (3), wherein the lumen (3) is arranged between a proximal end (5) and a distal end (4) of the device (1), and wherein tissue is transportable between the distal end (4) and the proximal end (5), wherein the tubular structure (2) com- prises longitudinally movable wall sections (6), and that said wall sections (6) are individually back and forth movable in the longitudinal direction of the device (1), wherein the device (1) is arranged such that during transport of tissue between the distal end (4) and the proximal end (5), first wall sections (6) assume a repetitious cycle of longitudinally moving in the direction of the proximal end (5) and back, and second wall sections (6) assume a repetitious shifted cycle with reference to the motions of the first wall sections (6) such that while the first wall sections (6) move in the direction of the proximal end (5) and back, the second wall sections (6) longitudinally move in the direction of the distal end (4) and forth, wherein the first wall sections (6) and the second wall sections (6) exert in absolute terms mutually different frictional forces on the tissue.L'invention concerne un dispositif de transfert de tissu (1) comprenant une structure tubulaire (2) dotée d'une lumière (3), la lumière (3) étant disposée entre une extrémité proximale (5) et une extrémité distale (4) du dispositif (1), et le tissu pouvant être transporté entre l'extrémité distale (4) et l'extrémité proximale (5), la structure tubulaire (2) comprenant des sections de paroi mobiles longitudinalement (6), et lesdites sections de paroi (6) étant individuellement mobiles d'avant en arrière dans la direction longitudinale du dispositif (1), le dispositif (1) étant conçu de sorte que, pendant le transport de tissu entre l'extrémité distale (4) et l'extrémité proximale (5), des premières sections de paroi (6) adoptent un cycle répétitif de déplacement longitudinal vers l'extrémité
