Nasal delivery devices
First Claim
Patent Images
1. A nasal delivery device for delivering substance to a nasal airway of a subject, comprising:
- a mouthpiece through which the subject in use exhales to cause closure of the oropharyngeal velum of the subject;
a nosepiece for fitting to a nostril of the subject, the nosepiece including a nozzle through which substance is in use delivered to the nasal airway;
a manually-actuatable substance supply unit which delivers substance through the nozzle of the nosepiece when manually actuated; and
a latch mechanism which is operative between a first, inoperative configuration, in which the substance supply unit is inactuatable and cannot be manually actuated to deliver substance through the nozzle of the nosepiece, and a second, operative configuration, in which the substance supply unit is actuatable, wherein the latch mechanism is a breath-operated mechanism which comprises a latch member which is movable on exhalation by the subject between the first, inoperative position, in which the substance supply unit is inactuatable and cannot be manually actuated to deliver substance through the nozzle of the nosepiece, and the second, operative position, in which the substance supply unit is actuatable.
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Accused Products
Abstract
A nasal delivery device for and a method of delivering substance to a nasal airway of a subject, the nasal delivery device comprising: a mouthpiece (519) through which the subject in use exhales to cause closure of the oropharyngeal velum of the subject; a nosepiece (517) for fitting to a nostril of a subject, the nosepiece including a nozzle (549) through which substance is in use delivered to the nasal airway; and a manually-actuatable substance supply unit (520) for delivering substance through the nozzle of the nosepiece.
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Citations
18 Claims
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1. A nasal delivery device for delivering substance to a nasal airway of a subject, comprising:
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a mouthpiece through which the subject in use exhales to cause closure of the oropharyngeal velum of the subject; a nosepiece for fitting to a nostril of the subject, the nosepiece including a nozzle through which substance is in use delivered to the nasal airway; a manually-actuatable substance supply unit which delivers substance through the nozzle of the nosepiece when manually actuated; and
a latch mechanism which is operative between a first, inoperative configuration, in which the substance supply unit is inactuatable and cannot be manually actuated to deliver substance through the nozzle of the nosepiece, and a second, operative configuration, in which the substance supply unit is actuatable, wherein the latch mechanism is a breath-operated mechanism which comprises a latch member which is movable on exhalation by the subject between the first, inoperative position, in which the substance supply unit is inactuatable and cannot be manually actuated to deliver substance through the nozzle of the nosepiece, and the second, operative position, in which the substance supply unit is actuatable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of delivering substance to a nasal airway of a subject, comprising the steps of:
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providing a delivery device which comprises a nosepiece for fitting to a nostril of a subject, the nosepiece including a nozzle through which substance is delivered, a mouthpiece through which the subject in use exhales to cause closure of the oropharyngeal velum of the subject, a manually-actuatable substance supply unit which delivers substance through the nozzle of the nosepiece when manually actuated, and a latch mechanism which is operative between a first, inoperative configuration, in which the substance supply unit is inactuatable and cannot be manually actuated to deliver substance through the nozzle of the nosepiece, and a second, operative configuration, in which the substance supply unit is actuatable, wherein the latch mechanism is a breath-operated mechanism which comprises a latch member which is movable on exhalation by the subject between the first, inoperative position, in which the latch mechanism is in the inoperative configuration and the substance supply unit is inactuatable, and the second, operative position, in which the latch mechanism is in the operative configuration and the substance supply unit is actuatable;
fitting the nosepiece to a nostril of the subject;preventing manual actuation of the substance supply unit and delivery of substance through the nozzle of the nosepiece when the latch mechanism is in the inoperative configuration; the subject exhaling through the mouthpiece to close the oropharyngeal velum of the subject and cause the latch member to be moved between the inoperative position, in which the substance supply unit is inactuatable and cannot be manually actuated to deliver substance through the nozzle of the nosepiece, and the operative position, in which the substance supply unit is actuatable; and manually actuating the substance supply unit to deliver substance through the nozzle of the nosepiece to the nasal airway of the subject. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification