A device for preparing adipose tissue for transplantation of lobular fat removed, for example, by liposuction, said fat consists of a fluid component comprising an oily component, a blood component and / or sterile solutions and a solid component comprising cell fragments, cells and one or more macro heterogeneous cell agglomerates, comprising at least one separation and washing container (1) having a washing chamber (101) for washing the liposuctioned material, whose container (1) has an inlet ( 102) and an outlet (103) for the liposuctioned material to enter the washing chamber (101) through the inlet (102) and for at least part of said material, particularly the fluid component, to exit said chamber (101) through the outlet (103), said washing chamber (101) includes means (104) for forming an emulsion of fluid components, by mechanical agitation； characterized in that said emulsion forms means (104) which are passive means that exert their action by inertia after agitation of the container (1) and comprises a plurality of agitation elements (104) each having a relatively small size when compared with the size of the washing chamber (101) in order to move freely in the chamber (101) without damaging the cellular material contained in that chamber (101).Un dispositivo para preparar tejido adiposo para trasplante de grasa lobular extraída, por ejemplo, mediante liposucción, dicha grasa consiste de un componente de fluido que comprende un componente aceitoso, un componente sanguíneo y/ o soluciones estériles y un componente sólido que comprende fragmentos celulares, células y uno o más macro aglomerados celulares de tamaño heterogéneo, que comprende por lo menos un recipiente (1) de separación y lavado que tiene una cámara (101) de lavado para lavar el material liposuccionado, cuyo recipiente (1) tiene una entrada (102) y una salida (103) para que el material liposuccionado ingrese a la cámara (101) de lavado a través de la entrada (102) y para que por lo menos parte
