Device for the administration of powdered medicinal substances

Details Device for the administration of powdered medicinal substances Device for the administration of powdered medicinal substances

A - Human Necessities

61

M

128/68

A61M 13/00 (2006.01) A61M 15/00 (2006.01) A61M 11/00 (2006.01)

Patent

CA 2040269

19 Abstract DEVICE FOR THE ADMINISTRATION OF POWDERED MEDICINAL SUBSTANCES This invention relates to a new inhaler for the local administration of powdered drugs to the respira- tory tract. The apparatus consists of a nozzle and a main body which itself defines a storage chamber for the medici- nal substance, a dosing means which supplies precisely measured doses of the drug and a dispensing system which pours the dose of the drug delivered into a col- lecting chamber. The cavity of the nozzle communicates with the collecting chamber through a central channel designed to reduce air flow resistance as much as possible. Lateral holes provided in the body of the inhaler allow for the passage of air from the outside. Upon inhalation, a negative pressure is created in the chamber in which the dose of powder delivered is collected, drawing an air inflow from the outside. The air flow is mixed with the medicinal substance particles and through the central channel, enters the cavity of the nozzle from where it is directly inhaled.

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