The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 1994
Filed:
Feb. 01, 1993
Chiesi Farmaceutici S.p.A., Parma, IT;
Abstract
An inhaler for the local administration of powdered drugs to the respiratory tract. The inhaler includes a nozzle and a main body which itself defines a storage chamber for the medicinal substance, a dosing mechanism which supplies precisely measured doses of the drug and a dispensing system which pours the dose of the drug delivered into a collecting chamber. A 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.