Patent ID: 6422234
Filing Date: 2002-07-23
Classification: A61M

Abstract:
A dispenser for a gaseous, gas borne or droplet substance, the dispenser including:a body having a mouthpiece connected thereto, the mouthpiece having an inhalation/insufflation orifice; a junction in the body for receipt of the substance; and a breath actuable valve, for controlling the release of said substance, comprising: a valve inlet connected to the junction; a valve outlet; a flexible tube extending from the junction, between the inlet and the outlet, for receiving the substance, the tube having a portion which is movable bodily between a closed position in which the tube is kinked, that is, bent to such an extent that it collapses on itself with an abrupt change in orientation of adjoining portions of said part of the tube for closure of the valve and an open position in which the tube is un-kinked for opening of the valve; and a movable member, for moving the movable portion of the tube to control its kinking, and being movably mounted in the body for movement by the act of inhalation from a rest position towards the orifice or at least in the direction of air flow through the dispenser; the tube being kinked to an obturating extent when the movable member and the bodily movable portion of the tube are in a rest position and un-kinked when the movable member and the bodily movable portion of the tube are moved on inhalation for release of the substance.