Inhalation device with a dose counting unit

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01)

Patent

CA 2326169

An inhaler for administering medicament by inhalation, comprising: an inhalation channel (24); a rotatable dosing unit (16) which includes at least one dosing element (18) for providing a dose of medicament to the inhalation channel (24); and a dose counting unit (42) which comprises an electronic display (57), an electrical circuit for counting each dose of medicament provided to the inhalation channel (24) and driving the display (57) so as to provide an indication as to the usage of the inhaler, the electrical circuit including at least one switch which comprises a contact element which is one of opened or closed when a dose of medicament is provided to the inhalation channel (24), and a rotatable member (45) connected to the dosing unit (16) so as to be rotatable therewith, the rotatable member (45) including at least one cam surface (51, 52) which includes at least one cam (51a, 52a), each cam (51a, 52a) on each cam surface (51, 52) being configured, on rotation of the dosing unit (16) to provide a dose of medicament to the inhalation channel (24), such as to cause movement of the contact element of the respective at least one switch and one of open or close the same.

On décrit un inhalateur servant à administrer un médicament par inhalation. L'inhalateur comprend un canal d'inhalation (24), un ensemble de dosage rotatif (16) incluant au moins un élément doseur (18) pour délivrer une dose de médicament dans le canal d'inhalation (24), et un compteur de doses (42) muni d'un dispositif d'affichage électronique (57), un circuit électrique pour compter chaque dose de médicament délivrée dans le canal d'inhalation (24) et utiliser le dispositif d'affichage (57) pour fournir une indication sur l'état d'utilisation de l'inhalateur, ledit circuit électrique incluant au moins un sélecteur muni d'un élément de contact qui se place en position ouverte ou fermée selon qu'une dose de médicament est délivrée ou non dans le canal d'inhalation (24). L'inhalateur comprend également un élément rotatif (45) fixé à l'ensemble de dosage (16) de manière à pivoter avec lui. L'élément rotatif (45) inclut au moins une surface à cames (51, 52) présentant au moins une came (51a, 52a) configuré pour délivrer une dose de médicament dans le canal d'inhalation (24), lorsque l'ensemble de dosage (16) pivote, de manière à déclencher un mouvement de l'élément de contact du sélecteur respectif pour placer ce dernier dans l'une ou l'autre position ouverte ou fermée.

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