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Trigger mechanism for a drug delivery device

A technology of trigger mechanism and delivery device, which is applied in the direction of medical equipment, infusion sets, nebulizers for treatment, etc., can solve the problem of long delay in resetting metal tanks, and achieve the effect of easy reset

Inactive Publication Date: 2012-02-15
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Requires the user to take a deep breath to ensure proper drug inhalation, while allowing a long enough delay to reset the canister

Method used

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  • Trigger mechanism for a drug delivery device
  • Trigger mechanism for a drug delivery device
  • Trigger mechanism for a drug delivery device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Figure 1A to Figure 1D A first embodiment of the trigger mechanism according to the invention is shown. The trigger mechanism is used in an inhaler 1 to actuate the delivery of a dose of medicament stored in the inhaler 1, such as a dry powder inhaler, an aqueous droplet inhaler or a metered dose inhaler. Successive steps in the actuation process for drug delivery are shown to illustrate the operation of the trigger mechanism.

[0041] The trigger mechanism comprises an actuating rotary plate 11 , a first lever 12 , a second lever 13 , a first spring 14 and a second spring 15 .

[0042]The actuating rotating plate 11 is located in the breathing channel 10 through which the user inhales. The actuating flap 11 and the levers 12, 13 pivot at one of their respective ends about pivots 111, 121, 131 . The actuating turntable 11 is provided with a first annular portion 112 at its pivot. The first lever 12 is provided with a second annular portion 122 at its pivot. The ann...

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PUM

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Abstract

The invention relates to a trigger mechanism for a drug delivery device comprising at least one energy storing element, an actuation element and a series of cascaded trigger elements. The trigger elements are pre-stressed with increasing pre-stressing and coupled to the at least one energy storing element such that the trigger elements, upon exerting a sufficient actuation force (Fa, U) on the actuation element, cause a cascaded release of increasing portions of energy stored in the at least one energy storing device. At least one of the trigger elements is equipped with a latch element directly coupling at least two trigger elements such that the latch element restrains at least one of these trigger elements to its pre-stressed state before exerting the actuation force (Fa, U).

Description

technical field [0001] The present invention relates to a trigger mechanism for a drug delivery device comprising at least one energy storage element and to a drug delivery device with such a trigger mechanism. Background technique [0002] In the art, various drug delivery devices are known which can be easily operated by the patient himself, such as inhalers or injection devices. Typically, such devices have a trigger mechanism to actuate the dispensing of the drug. [0003] For example, in mechanically powered inhalers, such as dry powder inhalers (DPI), aqueous droplet inhalers (ADI) and / or metered dose inhalers (MDI), there are trigger mechanisms designed as breath-actuated mechanisms. ). [0004] US 2004 020486 A1 discloses an inhaler for drug delivery from a metal canister which can be compressed to deliver a dose of drug. The inhaler includes a housing for holding a metal canister. The housing has a nozzle for inhaling the dose delivered by the metal canister. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M15/00
CPCA61M5/2033A61M15/009A61M2005/2013A61M2202/064A61M2205/8281A61M11/007A61M15/0091
Inventor C.J.史密斯
Owner SANOFI AVENTIS DEUT GMBH
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