Ultrasonic atomizer device with removable precision dosing unit

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01) A61M 5/24 (2006.01) B05B 17/06 (2006.01)

Patent

CA 2215248

A dosing unit (14) assembly is particularly adapted to be inserted into an atomizing device (2) that uses a ultrasound-driven atomization surface (28) to atomize medicament liquid (60) delivered thereto from the dosing unit (14) for inhalation by a patient. The dosing unit (14) contains its own drive mechanism that translates a plunger (66) in a medicament-containing ampoule (58) to force medicament liquid (60) through a delivery pipe (40) that pierces the ampoule (58) when the dosing unit is placed in its operative position in the atomizing device (2). The delivery pipe (40) is integral with a housing cover (38) of the dosing unit (14), and the housing cover (38) is located precisely relative to the device (2) so as to precisely locate the pipe outlet (42) relative to the atomization surface (28). The housing cover (38) also has a long-term storage position in which the delivery pipe (40) does not pierce the ampoule (58).

Un ensemble unité de dosage (14) est conçu notamment pour être inséré dans un dispositif d'atomisation (2) dans lequel on utilise une surface d'atomisation (28) commandée par des ultrasons afin de pulvériser un liquide médicamenteux (60) acheminé à cette surface à partir de l'unité (14) aux fins d'inhalation par un patient. Cette unité de dosage (14) contient son propre mécanisme d'entraînement qui commande le mouvement de translation d'un piston (66) dans une ampoule (58) contenant un médicament, afin de pousser le liquide (60) à travers le conduit d'apport (40), lequel perce l'ampoule (58) lorsque l'on place l'unité de dosage dans sa position de fonctionnement dans l'atomisateur (2). Le conduit d'apport (40) est solidaire d'un couvercle (38) du logement de l'unité de dosage (14), ledit couvercle (38) est placé de manière précise par rapport au dispositif (2) afin de positionner avec précision l'orifice de sortie (42) du conduit par rapport à la surface de pulvérisation (28), ce couvercle (38) présente également une position de conservation longue durée dans laquelle le conduit d'apport (40) ne perce pas l'ampoule (58).

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