Patent ID: 9616186
Date: 2017-04-11
CPC Classifications: A61M

Claim:
1. A powder inhaler device comprising a body provided with a dispenser orifice, a plurality of predosed reservoirs, each containing a dose of powder to be dispensed, said plurality of reservoirs being formed on an elongate flexible blister strip comprising a base layer that contains the cavities of the reservoirs, and a closure layer overlying said cavities, the closure layer being peelable off the base layer, the portion of base layer containing the empty blisters adapted to be rolled up around a first rotary receiver element, and the portion of closure layer peeled off said base layer adapted to be rolled up around a second rotary receiver element, wherein said second rotary receiver element is constituted by two portions, a first portion forming a peeling wheel, and a second portion forming a tensioner, said tensioner comprising a hollow first central sleeve, pawl-forming flexible fingers, a fastener element and flexible blades, said hollow first central sleeve being snap-fastened onto a second central sleeve of said peeling wheel such that said tensioner is capable of turning relative to said peeling wheel in a first direction of rotation only, said fastener element adapted to receive a leading end of said closure layer, wherein said peeling wheel includes an inner set of teeth co-operating with said pawl-forming flexible fingers of the tensioner, which enable the tensioner to turn relative to said peeling wheel in said first direction of rotation, but prevent the tensioner from turning in the opposite direction, wherein the flexible blades are adapted to compress radially as the closure layer rolls up, said tensioner adapted to turn together with said peeling wheel in said first direction of rotation so as to roll up said closure layer at each actuation of the device, and said tensioner being capable of turning relative to said peeling wheel in the first direction of rotation so as to tension said closure layer after the blister strip has been assembled in the body.