NASAL DELIVERY DEVICES
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.
1 - 38 . (canceled)
39 . A method of delivering a liquid substance containing a steroid to a nasal airway of a subject, comprising:
inserting a nosepiece into a nostril of the subject, the nosepiece having (i) a body member defining an outer sealing surface and an inner delivery channel and (ii) a nozzle, disposed in the delivery channel, through which the substance is delivered to the nasal airway of the subject;
inserting a mouthpiece into an oral cavity of the subject, the mouthpiece configured to receive a flow of exhalation breath generated by the subject, the flow of exhalation breath configured to cause closure of an oropharyngeal velum of the subject;
regulating the flow of exhalation breath by a flow regulator;
manually actuating a delivery pump to move a body part of the delivery pump from a first, rest position to a second, actuated position, wherein movement of the body part from the first, rest position to the second, actuated position is configured to cause a dose of the liquid substance to be expelled out of the nozzle; and
fluidly connecting the mouthpiece with the nosepiece when the body part of the delivery pump is moved from the first, rest position to the second, actuated position.
40 . The method of claim 39 , further comprising:
moving a valve assembly to an open configuration on actuation of the delivery pump, wherein the valve assembly is fluidly connected between the mouthpiece and the nosepiece, the valve assembly being movable between a closed configuration in which there is no fluid communication between the mouthpiece and the nosepiece and an open configuration in which there is fluid communication between the mouthpiece and the nosepiece.
41 . The method of claim 39 , wherein the subject manually actuates the delivery pump.
42 . The method of claim 39 , wherein the delivery pump is a multi-dose pump configured to deliver a plurality of doses of the liquid substance.
43 . The method of claim 39 , wherein the outer sealing surface of the body member is configured to provide a tight sealing fit with a nare of the subject.
44 . The method of claim 39 , further comprising:
delivering the liquid substance as an aerosol.
45 . A method of treating nasal inflammation in a subject in need thereof by delivering a liquid substance containing a steroid to a nasal airway of the subject, comprising:
inserting a nosepiece into a nostril of the subject, the nosepiece having (i) a body member defining an outer sealing surface and an inner delivery channel and (ii) a nozzle, disposed in the delivery channel, through which the substance is delivered to the nasal airway of the subject;
inserting a mouthpiece in an oral cavity of the subject, the mouthpiece configured to receive a flow of exhalation breath generated by the subject, the flow of exhalation breath configured to cause closure of an oropharyngeal velum of the subject;
regulating the flow of exhalation breath by a flow regulator;
manually actuating a delivery pump to move a body part of the delivery pump from a first, rest position to a second, actuated position, wherein movement of the body part from the first, rest position to the second, actuated position is configured to cause a dose of the liquid substance to be expelled out of the nozzle;
fluidly connecting the mouthpiece with the nosepiece when the body part of the delivery pump is moved from the first, rest position to the second, actuated position.
46 . The method of claim 45 , further comprising:
moving a valve assembly to an open configuration on actuation of the delivery pump, wherein the valve assembly is fluidly connected between the mouthpiece and the nosepiece, the valve assembly being movable between a closed configuration in which there is no fluid communication between the mouthpiece and the nosepiece and an open configuration in which there is fluid communication between the mouthpiece and the nosepiece.
47 . The method of claim 45 , wherein the subject manually actuates the delivery pump.
48 . The method of claim 45 , wherein the delivery pump is a multi-dose pump configured to deliver a plurality of doses of the liquid substance.
49 . The method of claim 45 , wherein the outer scaling surface of the body member is configured to provide a tight scaling fit with a nare of the subject.
50 . The method of claim 45 , further comprising:
delivering the liquid substance as an aerosol.