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Nasal delivery

a technology of nasal and nebulizer, which is applied in the direction of other medical devices, organic active ingredients, peptide/protein ingredients, etc., can solve the problems of difficult administration of substances, such as liquids or powders, and the operation of the device still does not provide effective delivery of substances

Inactive Publication Date: 2019-02-21
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whilst this delivery device is simple in construction, the operation of the device still does not provide for the effective delivery of substances, in particular one of a liquid or powder containing medicament, to the posterior region of the nasal airway, since medicament is delivered separately to each of the nasal cavities and the air flow into and out of each nasal cavity is through tire same opening, namely the respective nostril, with the closed posterior region of the respective nasal cavity acting as a pressure reflecting surface which causes the exhaled air to backflow out of the one nostril before ever adequately reaching the posterior region of the respective nasal cavity.
Further, in providing a short explosive burst of air flow into one of the nasal cavities, it is not possible to achieve a sustained and controlled bi-directional air flow through the nasal cavities which has been found necessary to deliver a substance effectively to the posterior region of the nasal airway.
However, there can be problems in attempting to achieve this goal.
In particular, the pathological changes observed with nasal inflammation make administration of substances, such as liquids or powders, tricky, particularly to the posterior region of the nasal airway and the posterior margins of the nasal structures.
Indeed, as a consequence of the complex geometry of the narrow slit-like passages in the nasal airway, these passages become partially occluded when the nasal mucosa is inflamed and congested, making the distribution of topical pharmaceuticals to the nasal airway difficult.

Method used

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Examples

Experimental program
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first embodiment

[0162]FIG. 4 illustrates a delivery device in accordance with the present invention.

[0163]The delivery device comprises an oral exhalation unit 20 and a substance delivery unit 22. In this embodiment the oral exhalation unit 20 and the delivery unit 22 are provided as separate components, but alternatively could be detachably coupled, for example by means of Velcro™ fasteners, connected, for example by means of screws and / or rivets, or even integrally formed.

[0164]The oral exhalation unit 20 comprises a tubular section 24 and a mouthpiece 26 attached to one end of the tubular section 24. The mouthpiece 26, which in use is gripped in the lips of a user, is formed separately of the tubular section 24 to allow for replacement, but could alternatively be integrally formed. In this embodiment the mouthpiece 26 is a snap fit on the tubular section 24, but could equally be a screw fit. The tubular, section 24 includes a flow resistor 28, in this embodiment a fixed baffle plate, configured ...

second embodiment

[0168]FIG. 5 illustrates a delivery device in accordance with the present invention.

[0169]The delivery device comprises the oral exhalation unit 20 and the delivery unit 22 of the above-described first embodiment, and an outlet unit 36 for fitting to the other nostril of a subject to which the delivery unit 22 is fitted.

[0170]The outlet unit 36 comprises a tubular section 38 and a nosepiece 40, in this embodiment formed of a resilient material such as a polymeric material, attached to one end of the tubular section 38 for providing a tight sealing fit in the other nostril of the subject. The nosepiece 40 is formed separately of the tubular section 38 to allow for replacement, but could alternatively be integrally formed. In this embodiment the nosepiece 40 is a snap fit on the tubular section 38, but could equally be a screw fit. As with the nosepiece 30 of the delivery unit 22, in a preferred embodiment the nosepiece 40 can include an external olive or be shaped to cause the anteri...

third embodiment

[0173]FIG. 6 illustrates a delivery device in accordance with the present invention.

[0174]The delivery device is very similar to that of the delivery device of the above-described second embodiment, and thus, in order to avoid unnecessary duplication of description, only the differences will be described in detail, with like parts being designated by like reference signs. This delivery device differs only, in further comprising a pressure sensor 43, in this embodiment a pressure-sensitive spring or membrane, located in the tubular section 34 of the delivery unit 22 downstream of the medicament supply unit 32, and a control unit 44 coupled to the sensor 43 and the medicament supply unit 32.

[0175]The control unit 44 is configured to control the flow rate of the delivery gas supplied by the medicament supply unit 32 in order to optimise the particle deposition efficiency in the nasal airway regardless of the degree of nasal congestion. As mentioned hereinabove, by maintaining an optimu...

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Abstract

A nasal delivery device for and method of delivering a substance, preferably comprising oxytocin, non-peptide agonists thereof and antagonists thereof, preferably as one of a liquid, as a suspension or solution, or a powder, to the nasal airway of a subject, preferably the posterior region of the nasal airway, and preferably the upper posterior region of the nasal airway which includes the olfactory bulb and the trigeminal nerve, and preferably in the treatment of neurological conditions and disorders.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a nasal delivery device for and a method of delivering a substance comprising oxytocin, non-peptide agonists thereof and antagonists thereof, in particular as one of a liquid, as a suspension or solution, or a powder, to the nasal airway of a subject, in particular the posterior region of the nasal airway, and in particular the upper posterior region of the nasal airway, which includes the olfactory bulb and the trigeminal nerve, in particular in the treatment of neurological conditions and disorders.[0002]Referring to FIGS. 1, 3, and 12, the nasal airway 1 comprises the two nasal cavities separated by the nasal septum, which airway 1 includes numerous ostia, such as the paranasal sinus ostia 3 and the tubal ostia 5, and olfactory cells, and is lined by the nasal mucosa. The nasal airway 1 can communicate with the nasopharynx 7, the oral cavity 9 and the lower airway 11, with the nasal airway 1 being in selective comm...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K9/00A61K38/12A61K31/198A61K31/4174A61M15/08A61K38/17A61K31/551A61M15/00
CPCA61K38/12A61K31/551A61K38/17A61K31/198A61M2202/0468A61K31/4174A61M2202/064A61M15/0098A61K9/0043A61M15/08
Inventor DJUPESLAND, PER GISLE
Owner OPTINOSE AS
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