Inhaler

Details Inhaler Inhaler

A - Human Necessities

61

M

A61M 15/00 (2006.01)

Patent

CA 2636999

An object of the present invention is to enhance the inhalation efficiency by bearing liquid droplets on an air flow at the early stage of inhalation in an inhaler that is used for the user to inhale a medicine ejected from an ejection head. According to one embodiment of the present invention, from an operation in which the user lets out a breath before the start of inhalation, that is, from the exhalation stage, a positive pressure B produced by the exhalation is detected by a pressure detecting unit, and is compared with a standard pattern stored in a storage unit, by which the exhalation profile of the user is prepared. A time difference t between the exhalation finish time and the start time of next inhalation is estimated, followed by the determination of the ejection start time T1 based on these pieces of information.

L'objet de la présente invention permet d'améliorer l'efficacité de l'inhalation en projetant des gouttelettes de liquide sur un jet d'air aux premiers stades de l'inhalation dans un inhalateur utilisé pour inhaler un médicament expulsé d'une unité servant à l'expulsion. Selon l'un des modes de réalisation, lorsque l'utilisateur expire avant d'inhaler (étape de l'expiration), la pression positive B exercée par l'expiration est détectée par une unité de détection de la pression et est comparée à une valeur standard emmagasinée dans une unité de stockage. Cette manoeuvre permet de préparer le profil d'expiration de l'utilisateur. Le délai entre la fin de l'expiration et le début de la prochaine inspiration est estimé, puis le début de l'expulsion T1 est calculé à l'aide de ces données.

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