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:
May. 05, 1998
Filed:
Jun. 07, 1995
Advanced Therapeutic Products, Inc., San Antonio, TX (US);
Duke University, Durham, NC (US);
Abstract
A method for delivering dry powder particles through the mouth of a user, in which a suction is created through an opening in a proximal end of an elongated housing for drawing air into a flow path in the housing from an opening in a distal end of the housing, the distal end including an opening in the housing with a ridge surrounding the housing, and through a resistance member in the housing for introducing a controlled pressure drop in the housing and a resistance to the drawing of air into the mouth of the user. A measured amount of dry powder particles having a therapeutic capability, is introduced into the housing so that the particles will travel downstream from the resistance member at a relatively low velocity in a non-agglomerated state, the dry powder particles being sized and coordinated with the controlled pressure drop so that the particles can be drawn into the mouth of the user and inhaled, with the resistance being sufficiently great that the particles are drawn into the mouth of the user to simulate the action of puffing on a cigarette so that at least some of the particles are deposited in the oral cavity and upper respiratory tract of the user after being drawn into the mouth.