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Breath actuated inhaler

A metered dose inhaler, actuation technology, applied in the direction of respirators, inhalers, medical devices, etc.

Active Publication Date: 2020-10-23
NORTON (WATERFORD) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Examples

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Embodiment Construction

[0074] The present invention provides a valve port for a pneumatically powered holding unit in a breath-actuated metered dose inhaler, a breath-actuated metered dose inhaler, and methods of manufacture and assembly thereof.

[0075] Figure 8 A breath-actuated inhaler is shown, which is only an example of an inhaler according to the invention. The inhaler comprises a force maintaining unit housing 12, a main body 14, a mouthpiece dust cover 16 and a dose counting door 18 with a dose counting window. In other embodiments including nasal inhalers, the mouthpiece 66 may be replaced with a nasal spray.

[0076] Such as Figure 8 As shown in the exploded view of , the dose counter chamber 22 includes a dose counter system 24 which is enclosed in the dose counter chamber by the dose counter door 18 . The dose counter system includes an actuation pin 26 and a return spring 28 . The dose counter may take various forms and may for example be a dose counter as described in EP2135199...

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Abstract

A metered dose inhaler and in particular, a breath actuated metered dose inhaler, is provided with a valve port (1095) and a diaphragm (1000) for a pneumatic force holding unit of a breath actuated metered dose inhaler, a flap valve (36) for the canister fire system of a breath actuated metered dose inhaler. The present invention also relates to methods for manufacturing and assembling the breathactuated metered dose inhaler. The valve port comprises an annular boss (1100) defining a valve orifice channel (78), wherein valve port further comprises two or more radially outwardly extending projections (1106,1107) defining a path through which polymer entered the boss during injection moulding, and the projections are substantially uniformly circumferentially separated.

Description

technical field [0001] The present invention relates to a metered dose inhaler, in particular to a breath actuated metered dose inhaler. The invention also provides a valve port and diaphragm for a pneumatic retaining unit of a breath-actuated metered dose inhaler, a flap valve for a canister activation system of a breath-actuated metered dose inhaler, and methods of manufacture and assembly thereof. Background technique [0002] Inhalers are known for delivering medicaments to a patient by inhalation. Such devices include metered dose inhalers (both pressurized and dry powder). Metered dose inhalers typically comprise a container containing a drug and an actuator housing having a drug delivery outlet in the form of a mouthpiece or nasal spray. [0003] The container containing the drug may be a pressurized tank containing a mixture of active drug and propellant. Such cans are typically formed from a deep drawn aluminum cup with a crimped lid that carries the metering val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M15/00B29C45/00F16K31/00
CPCA61M15/009A61M15/0026A61M15/0068A61M15/0095B29C45/37B29K2995/0072B29K2995/0073A61M15/002A61K9/0073A61K31/137A61K31/575A61K31/46A61P11/00A61P11/06A61M16/208A61M39/24A61M2016/0015A61M2039/242A61M2039/244A61M2202/064A61M2207/10
Inventor D·沃尔什P·普伦德加斯特D·巴克T·肯特N·汤普森
Owner NORTON (WATERFORD) LTD
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