Powder inhaling device with two-part rotary receiving element for blister strip closure layer

Patent metadata

Field	Value
Publication number	US-9616186-B2
Application number	US-201214237249-A
Country	US
Kind code	B2
Filing date	Aug 13, 2012
Priority date	Aug 19, 2011
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A powder inhaler having reservoirs containing a dose of powder and formed on a flexible blister strip having a base layer with cavities and a closure layer. The base layer containing empty blisters rolls up around a first rotary receiver element, and the closure layer peeled off the base layer rolls up around a second rotary receiver element that has a first portion forming a peeling wheel and a second portion forming a tensioner. The tensioner is capable of turning in a first direction of rotation and includes a fastener element for the leading end of the closure layer. The tensioner turns with the peeling wheel in the first direction to roll up the closure layer at each actuation of the device and turns relative to the peeling wheel in the first direction of rotation to tension the closure layer after the blister strip has been assembled in the body.

First claim

The invention claimed is:

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.

2. A device according to claim 1 , wherein the device includes displacement means, to cause the blister strip to advance before and/or during each actuation, said second rotary receiver element being correlated in rotation with said displacement means.

3. The device according to claim 2 , wherein the device displacement means is an indexer wheel.

4. A device according to claim 2 , wherein said peeling wheel includes an outer set of teeth meshing in rotary manner with said indexer wheel.

5. A device according to claim 1 , wherein a leading end of the base layer is fastened to said first rotary receiver element that is provided with a spiral spring so as to exert tension on said base layer.

6. A device according to claim 1 , wherein the device includes a dispersion chamber including both an inlet that, during inhalation, is connected to an open reservoir, and receives a flow of air and of powder from said open reservoir via a delivery channel, and also an outlet that is connected to said dispenser orifice via a dispenser channel, said dispersion chamber including at least one ball that is movable in said dispersion chamber, said dispersion chamber including at least one approximately tangential air inlet, said delivery and dispenser channel extending in a same direction that is substantially perpendicular to said at least one tangential air inlet of said dispersion chamber.

7. A device according to claim 6 , wherein said dispersion chamber contains a plurality of balls.

8. A device according to claim 1 , wherein said device includes means for unsticking said closure layer from said base layer.

9. The device according to claim 8 , wherein the means for unsticking said closure layer from said base layer is a peeling edge around which said closure layer extends.

Assignees

• Colomb Arnaud
• Aptar France Sas

Inventors

• Colomb Arnaud

Classifications

• A61M15/0045

  using multiple prepacked dosages on a same carrier, e.g. blisters · CPC title

• A61M15/0008

  rotating by airflow · CPC title

• A61M15/0043

  Non-destructive separation of the package, e.g. peeling · CPC title

• A61M15/0051 Primary

  the dosages being arranged on a tape, e.g. strips · CPC title

• A61M15/0055

  the used dosages being coiled · CPC title