Dosing device

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01) B29C 45/14 (2006.01) F15C 3/04 (2006.01)

Patent

CA 2422129

A dosing device comprising a dispensing means (26) for dispensing a dose material and a dose actuation mechanism (44) is provided. The dose actuation mechanism (44) comprises a number of integrally hinged links (52, 54, 55) which are connected to each other at hinging points. A deflectable tongue (157), moveable in response to air flow from inhalation by a patient is attached to a first link (52), to move the first link in response to air flow, movement of the first link being transferred to a second link (54) to cause actuation of the dispensing means. The first link rests at an over-centre, or stable, position prior to operation, and moves under-centre during operation of the device to trigger movement of the second link. The dose actuation mechanism is a one-piece moulding from plastics material.

L'invention concerne un dispositif de dosage comportant un dispositif de distribution (26) d'une matière et un mécanisme de déclenchement de dose (44). Ledit mécanisme (44) comporte un certain nombre de liens articulés (52, 54, 55) en une seule pièce, reliés les uns aux autres au niveau de points d'articulation. Une languette pouvant être déviée (157), amovible en réponse à un flux d'air provenant de l'inhalation d'un patient, est attachée au premier lien (52) de manière à déplacer celui-ci en réponse au flux d'air, le mouvement du premier lien étant transféré au second lien (54) pour provoquer le déclenchement du dispositif de distribution. Le premier lien repose au niveau d'un emplacement excentrique ou stable, avant le fonctionnement dudit dispositif, et se déplace au centre pendant son fonctionnement, de manière à occasionner le mouvement du second lien. Le mécanisme de déclenchement de dose constitue un moulage intégral en matière plastique.

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