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Inhaler for powdery substances

A technology of powder substances and inhalers, which is applied in the direction of inhalers, etc., can solve the problem of unreliable emptying of the dosing chamber

Inactive Publication Date: 2009-04-08
ASTRAZENECA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Filling and emptying of the metering chamber by means of air flow is unreliable

Method used

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  • Inhaler for powdery substances
  • Inhaler for powdery substances
  • Inhaler for powdery substances

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The shown and described inhaler 1 is realized as a portable pocket-sized device, having a cylindrical housing 2 from which an approximately radially protruding nozzle 3 extends. The usual form of the inhaler 1 roughly corresponds to that of an inhaler provided with an aerosol cartridge. The manner in which the inhaler 1 operates is adapted accordingly and is obvious to the user.

[0041] The inhaler 1 thus has an actuating knob 4 which accommodates and is laterally aligned with respect to the usual housing axis x, protruding above the housing 2 and facing the opposite face at the bottom of the housing ( counte-face) 5 relative. The discharge of the substance is effected by displacement of the actuating knob 4 along the axis x in the direction of the opposite face 5 on the bottom face.

[0042] The housing 2 forms a hollow cylindrical body and, in the exemplary embodiment shown, this body has a circular shape in plan view. Other forms than this circular form are also ...

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PUM

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Abstract

The invention relates to an inhalator (1) for powdery substances (33), especially medical substances. Said inhalator comprises a substance reservoir chamber (27) and a metering chamber (34). Said metering chamber is configured as a crossbore (35) of a rod (36) and can be displaced from a filling position (B) to a discharge position (E), in which discharge position (E) the metering chamber (34) is positioned in an air flow channel (21). The aim of the invention is to improve said inhalator, especially with regard to the filling or emptying of its metering chamber, even when particles of smallest dust-like grain size are used. For this purpose, at least a part of the reservoir chamber wall (28) is displaced in the direction of the rod (36) when the inhalator (1) is actuated.

Description

technical field [0001] According to the preambles of the independent claims, the invention relates to an inhaler for powdered substances, in particular medicaments. Background technique [0002] Inhalers of the type in question are known. For example, US5239992 can be referred to. This patent specification discloses and describes an inhaler having a stem comprising a dosing chamber and being displaceable from a filling position to an emptying position. The displacement of the metering chamber and the emptying of the metering chamber depend on the suction produced by the patient inhaling deeply. Filling and emptying the metering chamber by means of a gas flow is unreliable. Contents of the invention [0003] Based on the known prior art, the object of the present invention is to further improve the conventional inhaler, in particular with regard to the filling of the metering chamber in the emptying position, and in particular its emptying. [0004] The above object is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M15/00
Inventor 艾尔弗雷德·冯舒克曼
Owner ASTRAZENECA AB
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