A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 15/06 (2006.01) A61M 15/00 (2006.01)
Patent
CA 2167509
The invention concerns an inhaler device (1) having a hollow tubular member (2, 102, 402) connected to a chamber (5, 105, 405). The tubular member has a first opening (3, 103, 203) at one end through which air can be sucked and the chamber (5, 105, 405) has a hole (4, 104, 204) therein for entry of air. When air is sucked through the first opening, air enters the chamber through the hole swirls and moves towards the first opening (3, 103, 203). To maintain or increase the swirling effect of the air a single restriction (10, 110) is arranged between the opening and the hole (4, 104, 204). A powdered substance (8) within the chamber is picked up by the swirling air within the chamber and is uniformly and finely divided by the swirling effect of the air. The effect can be enhanced by adding a movable element (6) such as a ball inside the chamber (5) and/or by providing a central core element (112, 412) inside the chamber.
Inhalateur (1) présentant un élément tubulaire creux (2, 102, 402) relié à une chambre (5, 105, 405). L'élément tubulaire est muni à l'une de ses extrémités d'un premier orifice (3, 103, 203) d'aspiration tandis que la chambre (5, 105, 405) présente un orifice d'admission de l'air. Lorsque l'air est aspiré, il pénètre dans la chambre par les chicanes du trou et se dirige vers le premier orifice (3, 103, 203). Pour maintenir ou accroître le tourbillon, un unique rétricissement (10, 110) est ménagé entre l'orifice et l'ouverture (4, 104, 204). La substance pulvérulente (8) placée dans la chambre est entraînée par le tourbillon d'air de la chambre qui la vaporise finement. On peut encore renforcer l'effet en munissant la chambre (5) d'un élément mobile (6) tel qu'une balle, ou d'un noyau central (112, 412).
Aventis Pharma Limited
Fetherstonhaugh & Co.
Horlin Ernst
LandOfFree
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