The invention relates to a powder inhaling device comprising a body (10) provided with a distribution opening (15) and a plurality of pre-dosed receptacles (21), each containing a dose of powder to be distributed. Said plurality of receptacles (21) is formed on a long, flexible blister strip (20) comprising a base layer (22) containing the cavities of the receptacles and a closing layer covering said cavities, said closing layer (23) being peelable from the base layer (22). The base layer part (22) containing the empty blisters winds around a first rotary receiving element (40), and the closing layer part (23) peeled from said base layer (22) winds around a second rotary receiving element (50). Said second rotary receiving element (50) consists of two parts, a first part forming a peeling wheel (51) and a second part forming a stretcher (52) that is locked onto said peeling wheel (51) and is rotatable in relation to said peeling wheel (51) only in a first direction of rotation. Said stretcher (52) comprises an attaching element (53) receiving the front end of the closing layer (23), and rotates together with said peeling wheel (51) in the first direction of rotation in order to wind said closing layer (23), each time the device is actuated. The stretcher (52) is rotatable in relation to the peeling wheel (51) in said first direction of rotation in order to stretch the closing layer (23) following the assembly of the blister strip (20) in the body (10).Dispositif dinhalation de poudre, comportant un corps (10) pourvu dun orifice de distribution (15), une pluralité de réservoirs prédosés (21) contenant chacun une dose de poudre à distribuer, ladite pluralité de réservoirs (21) étant formée sur une bande de blisters (20) souple allongée, comportant une couche de base (22) contenant les cavités des réservoirs et une couche de fermeture (23) recouvrant lesdites cavités, la couche de fermeture (23) étant pelable de la couche de base (22), la partie de couche de base (22)
