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Trigger mechanism for inhaler

A trigger mechanism, inhaler technology, applied in the direction of inhalers, respirators, etc., can solve problems such as tolerances

Active Publication Date: 2021-06-01
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] While breath-actuated inhalers can help achieve coordination between inhalation and drug dose release, some existing devices employ mechanical breath-actuation systems that can require tight tolerances to be both stable and sensitive

Method used

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  • Trigger mechanism for inhaler
  • Trigger mechanism for inhaler
  • Trigger mechanism for inhaler

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Experimental program
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Embodiment Construction

[0054] Before describing the embodiments according to the present invention (refer to Figure 2 to Figure 25 ), will refer to figure 1 Embodiments of conventional pMDI devices are described.

[0055] figure 1 A conventional pressurized metered dose inhaler (pMDI) 50 is shown comprising a canister 51 containing a drug formulation 52 comprising a canister 53 sealed at crimp 46 with a metering valve 54 . The canister 51 is located within a housing (or "actuator") 55 which includes a tubular sleeve portion 56 having an open end 47 sized to receive the canister 51 and whose base 49 can A portion in the form of a patient port 57 (eg in the form of a mouthpiece) protrudes from the open end and defines the suction aperture (or air outlet) 45 . For simplicity, such patient ports of inhalers are sometimes referred to herein as "mouthpieces". However, it should be understood that such a mouthpiece could alternatively be configured as a nose piece of a nasal inhaler, and that the pr...

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PUM

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Abstract

The present invention provides a breath responsive metered dose inhaler having a trigger mechanism for triggering drug delivery and a trigger mechanism chassis for positioning the trigger mechanism within the inhaler, the trigger mechanism comprising a breath responsive member, the breath responsive The member is movable upon inhalation by the user from an actuated position, in which the inhaler is prevented from delivering the medicament, to a triggered position, in which the medicament is delivered to the user, being a flexible spring along its longitudinal axis, wherein The spring is configured to bias the breath-responsive member from its triggered position to its activated position by flexing along its longitudinal axis.

Description

[0001] Cross References to Related Applications [0002] This patent application claims the benefit of UK Patent Application No. 1615183.9, filed 7 September 2016, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present application relates to a breath actuated trigger mechanism for use in a dose release firing system for an inhaler, in particular a medicinal inhaler. The present application also relates to inhalers, in particular to pharmaceutical inhalers comprising a medicament container. Background technique [0004] Nebulized drugs have been delivered to the respiratory tract to treat respiratory and other diseases using pressurized metered dose inhalers (pMDIs), dry powder inhalers (DPIs) and nebulizers. pMDI inhalers are familiar to many patients with asthma or chronic obstructive pulmonary disease (COPD). A pMDI device typically consists of an aluminum canister sealed with a metering valve, which holds the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M15/00B21F3/02
CPCA61M15/009A61M15/0091A61M16/20A61M15/0021A61M15/0068
Inventor 史蒂芬·J·豪吉尔
Owner 3M INNOVATIVE PROPERTIES CO