EP3247424A1

EP3247424A1 - Device for administering an active principle by the oral mucosal route

Info

Publication number: EP3247424A1
Application number: EP16705222.4A
Authority: EP
Inventors: Philippe Perovitch
Original assignee: Auzerie Jack
Current assignee: Auzerie Jack
Priority date: 2015-01-20
Filing date: 2016-01-19
Publication date: 2017-11-29
Also published as: WO2016116693A1; FR3031668A1; US20180008515A1

Abstract

Device for administering an active principle by the oral mucosal route, comprising: • - an ampoule (1) containing a liquid and closed by a seal (10), • - a syringe body (2) provided with a dispensing orifice for dispensing said liquid to the gingival and buccal mucosa, • - a piston (3), • - a piston rod (4), • - a connector (20) formed in one piece with or fixed to said syringe body (2), said connector (20) being designed to connect in a leaktight manner to said ampoule (1), said connector (20) comprising an internal perforator (23) for perforating said seal (10), said internal perforator (23) forming said dispensing orifice of the syringe body (2) during the dispensing of the liquid, said connector additionally comprising an external protective skirt (21) surrounding said internal perforator (23), and said connector (20) comprising an annular receiving space (24) for receiving said peripheral axial edge (11) of said ampoule (1), said annular receiving space (24) being defined between said internal perforator (23) and said external protective skirt (21).

Description

Device for administering an active ingredient by route

oral mucosa

The present invention relates to a device for administering an active ingredient per oral mucosa, in particular a lipophilic active principle dissolved in a hydro-alcoholic solution consisting of water and ethanol.

Oral mucosal administration of lipophilic active principles, placed in high-ethanol hydroalcoholic solution, has been described in WO2008035020, WO2008087323, WO2009095621, WO2010072950, WO2010081984, WO2010070236, WO201 10041 or WO2014108657. It has also been the subject of scientific work and international presentations and publications related to its therapeutic efficacy, specifically related to the rapid absorption and systemic bioavailability of these lipophilic active principles in aqueous-alcoholic solutions administered at a low dosage by the same route. - gingivo-jugal mucosa. Suitable devices for preparing and dispensing these active principles have been described in WO2009016309, WO2009138644, WO2010063978 or WO2012072934. To allow the administration of such hydro-alcoholic solutions, they must preferably be deposited completely and in a single action, preferably in the anatomical gingivochalal gutter, in order to ensure the absorption of these weak solutions. volume in a few seconds by this same mucous surface, so that following this administration, the active ingredient is instantly distributed in the central bloodstream and arterial.

Many common active ingredients remain stable in these same hydro-alcoholic solutions, active ingredients which must be economically delivered for the use of patients at a cost corresponding to the usual levels of the market drugs, such as those administered orally, they are subject to prescription or over-the-counter (OTC). The exploitation constraint of these hydroalcoholic therapeutic formulations at acceptable manufacturing and sales costs, is coupled with the need to protect them from degradation phenomena, for example due to light, oxidation, and the packaging of these solutions must expressly be of pharmaceutical quality and stable over time.

On the other hand, the use of these solutions and their mucosal application, must be carried out in the greatest simplicity of preparation and application for both the caregiver and any patient user average skill, which often self-administers them.

WO 2007/014955 discloses a glass ampoule with a single opening provided with a seal sealed on a circular rim, which cap may be defeated by traction on an external tab, said seal may also be pierced by a straw, which allows then to extract all the liquid easily by sucking it, as for a drink.

The aqueous-alcoholic solutions to be administered by the oral mucosa route, vectors of lipophilic active principles placed in solution, have a very small volume, preferably less than 2 ml. For such small volumes, if one takes the case of a sealed ampoule of 2 ml, the precise and complete deposit in the gingivo-juale gutter of the patient is difficult or impossible to obtain from the only manipulation of such a small bulb, whatever its conformation. Indeed, the liquid remains retained at the neck of the bulb that supports the sealing of the lid. Even if the lid is completely perforated or detached from the orifice, the surface tension exerted by the hydro-alcoholic solution at said glass rim of the neck of this small bulb, remains an obstacle to an easy, complete delivery and instantaneous of the hydro-alcoholic drug solution as desired, this given the small volume of solution contained in the same ampoule, the liquid whose weight is not sufficient to break the same surface tension of the orifice which holds the same. 'flow. Under these conditions, it is very difficult, if not impossible, to pour the entire contents of such a bulb precisely into the gingivo-jugal anatomical area, opposite the premolars and molars of the lower jaw, while holding said bulb at the end of the fingers. It is also impossible to deliver a very precise fraction, for example an assay measured to the nearest tenth milligram, of the active ingredient present in solution, depending on the patient, its weight and / or age.

WO0057835, EP1378223, JP2005143677, US2005159724, US5921419 and EP0499481 disclose other devices of the prior art.

The present invention aims to overcome the aforementioned drawbacks.

The present invention is intended in particular to allow the easy operation of small volume sealed ampoules, in order to deliver medicinal aqueous solutions alcohol-per-oral mucosa.

The present invention also aims to allow the exact measurement of the dosage of active ingredient to be administered and its instantaneous administration and without any loss.

Another object of the present invention is to provide a device for administering an active ingredient by the oral mucosa route which, by its particular shape, protects the mucosal tissues of the gingivochalal gutter from any trauma or deterioration during this administration.

Another object of the present invention is to provide a device for administering an oral mucosal active ingredient which is simple and inexpensive to manufacture and assemble, and reliable in use.

The present invention therefore relates to a device for administering an active ingredient per oral mucosa, comprising:

a ampoule containing a liquid, said ampoule comprising a single opening defining a peripheral axial edge and closed by a lid,

a syringe body provided with a dispensing orifice for dispensing said at least one active principle on the gingivo-jugal mucosae,

a piston contained in said syringe body, a piston rod connected to said piston for moving said piston in said syringe body,

a connector formed of a piece with or attached to said syringe body, said connector being adapted to connect sealingly to said ampoule, said connector comprising an internal perforator for perforating said lid of said ampoule and connecting the inside of said ampoule with said syringe body, said internal perforator forming said dispensing orifice of the syringe body during the distribution of the active ingredient on said gingivo-jugal mucosa, said connector further comprising an external protective skirt to create a gingivo-jugal cavity in spreading the jute mucosa of the gingival mucosa during the time of deposition and complete absorption of said liquid, said outer protective skirt surrounding said internal perforator, and said connector having an annular receiving space for receiving said peripheral axial edge of said ampoule, said annular receiving space being defined between said perforation internal frame and said outer protective skirt.

Advantageously, said syringe body and said connector are integrally formed.

Alternatively, said syringe body and said connector are separately formed, said connector having attachment means for securing said connector to said syringe body.

Advantageously, said fixing means comprise screwing or latching means.

Advantageously, said fixing means comprise locking means, such as a groove, which ensure a firm attachment of said connector on said syringe body.

Advantageously, said perforator has a blunt end and non-aggressive.

Advantageously, said outer protective skirt has a rounded outer shape, in particular hemispherical.

Advantageously, said syringe body has graduations, allowing accurate dosing, especially 0.01 ml. Advantageously, said syringe body comprises a lockable movable slider, thus making it possible to determine a benchmark of the reference dosage to be administered.

Advantageously, said ampoule contains a hydroalcoholic solution consisting of water and ethanol, with preferably 40% to 60% ethanol and 60% to 40% water.

Advantageously, said ampoule contains an active ingredient dissolved in said hydro-alcoholic solution.

Advantageously, the volume of said ampoule is between 0.5 ml and 2 ml.

These and other features and advantages of the present invention will appear more clearly from the following detailed description, made with reference to the accompanying drawings, given by way of non-limiting examples, and in which,

FIG. 1 is an exploded view of a device for administering an active ingredient by the oral mucosa route according to a first advantageous embodiment of the invention,

FIG. 2 is a view similar to that of FIG. 1, showing a second advantageous embodiment of the invention,

FIG. 3 is a detailed perspective view of a sealed ampoule,

FIG. 4 is a detail view, in cut-away perspective, of the connector of FIG. 3, according to a first advantageous embodiment of the invention,

FIG. 5 is a view similar to that of FIG. 4, showing a second advantageous embodiment of the connector,

FIG. 6 is a diagrammatic cross-sectional view of the connector of FIG. 4;

FIG. 7 is a diagrammatic cross-sectional view of the connector of FIG. 5,

FIG. 8 is a three-quarter perspective view below of a connector according to the second embodiment of the invention of FIG. 2, - Figures 9 to 12 are schematic views illustrating other embodiments.

In order to make the drawings explicit, the proportion of the scales is not necessarily respected. Furthermore, Figures 1 to 3 show the delivery device in the upright position, with the syringe above the ampoule. However, it is understood that in use, when the user draws the product contained in the ampoule to transfer it into the syringe, it is preferable that the administration device is in the inverted position, with the ampoule above the syringe, to avoid aspiration of air.

The present invention applies more particularly to active ingredients of lipophilic nature dissolved in an aqueous-alcoholic solution. This hydroalcoholic solution is preferably composed exclusively of water and ethanol. Advantageously, the hydroalcoholic solution comprises from 40% to 60% by volume of ethanol and from 60% to 40% by volume of water.

With reference to FIG. 1, a first advantageous embodiment of the invention will be described.

In this first embodiment, the device comprises four components: a sealed ampoule 1, whose volume is preferably between 0.5 ml and 2 ml, a syringe body 2, a piston 3, and an actuating rod 4 cooperating with said piston 3 to slide it sealingly into said syringe body 2. Advantageously, said piston 3 may be formed of a seal positioned at the end of said actuating rod 4.

The ampoule 1, visible in Figure 3, has a single opening defining a peripheral axial edge 1 1, said opening being closed by a cap 10. Said seal 10 is perforable and preferably non-peelable. The end 12 of the ampoule 1 opposite to said operculum 1 1, typically in the form of a tapered tail of the bulb, is advantageously free, and may optionally be held by the user of the device while it inserts said ampoule 1 into the connector 20 of the syringe body 2 described below. The syringe body 2 comprises on one side a connector 20 adapted to connect to said bulb 1, and on the other side a radial flange 29 forming a finger rest during actuation.

In this first embodiment, said connector 20 is formed of a one-piece piece with said syringe body.

The syringe body 2 further comprises graduations for a very accurate dosage, especially 0.01 ml, which allows to adjust with great precision the dosage of the active ingredient administered relative to the desired therapeutic action. Advantageously, said syringe is specifically graduated for the exclusive use of the determination of a single active principle in hydro-alcoholic solution to be administered gingivo-juale. In particular, the precise dosage to be administered gingivochalally can be taken from said sealed ampoule and adjusted to at least one fiftieth of a milliliter.

Advantageously, there may be around the syringe body 2 a movable slider 200 around the graduation of the syringe. This slider 200 is preferably lockable in a fixed manner, which allows to mark the precise dosage to be administered or not to be exceeded, so that the user respects the dosages determined for each take. The lock of the slider 200 can for example be achieved with an external clamping screw 210, as shown schematically in FIG. 10. In a variant, the slider 200 can be slidable on a lateral rail 220 integral with the syringe 2 or the connector 20, the slider 200 locking on notches of stops 225 present on the side rail 220. These notches 225 may for example be stair-type, square, or holes in which the slider 200 clips. According to yet another variant , the slider can simply slide with friction on the syringe body.

Said connector 20 comprises an internal perforator 23 for perforating said cap 10 of said ampoule and thus connecting the inside of said ampoule 1 with said syringe body 2. Said internal perforator 23 comprises a channel 25 and forms the dispensing orifice of the body syringe 2 during the distribution of the active ingredient on said gingivo-jugal mucosa. Said connector 20 further comprises an outer protective skirt 21 surrounding said internal perforator 23. This protective skirt 21 surrounds said internal perforator 23, and advantageously comprises a rounded outer shape, particularly hemispherical, to avoid any risk of injury when it comes into contact of the gingivo-jugale gutter. This rounded shape makes it possible in particular to move the cheek of the patient away from the gingiva, and thus to maintain said gap forming an enlarged channel during the flow of the hydro-alcoholic solution of the active ingredient in said gingivo-juar gutter, in preventing any traumatic or irritating involvement of said mucosal anatomical cavity. In particular, the present invention makes it possible, after an exact duly measured sampling of the hydroalcoholic solution from the ampoule 1, to remove the mucous membrane of the gingival mucosa with the aid of the connector 20 in order to temporarily create the mucous receptacle cavity of this mucous membrane. hydro-alcoholic deposit, to allow its deposit and absorption.

Advantageously, the dimensions of the connector 20 can be adapted for administration to small children.

The connector 20 also comprises an annular receiving space 24 for receiving, advantageously sealingly, the peripheral axial edge 1 1 of the bulb 1, said annular receiving space 24 being defined between said internal perforator 23 and said outer protective skirt 21 .

Advantageously, said perforator 23 has a blunt and non-aggressive shape and forcibly perforates said lid. As a variant, said perforator could comprise a pointed and / or cutting and / or tearing end, to favor the perforation of said ampule 1. Of course, said protective skirt 21 surrounding said cutting end, any risk of injury would be avoided.

The present invention thus makes it possible on the one hand to accurately take the hydro-alcoholic solution from the ampoule 1, after piercing the cap 10, by measuring the dosage to be administered, and on the other hand, to deliver said dosage in the gingivo-jugal gutter, for mucosal absorption instantaneous and complete of said dosage. This complete absorption typically lasts from 3 to 10 seconds, depending on the volume of solution administered.

It should be noted that after the taking of a dosage and its gingivo-malal administration to a patient, the connector 20 can be connected again to the bulb 1, thereby sealing the ampoule tightly and to prevent the evaporation of ethanol from the hydroalcoholic solution of this ampoule. In this way, it is possible to keep for a certain time the dosage remaining in the ampoule and if necessary to take it again for the same patient already treated previously if it appears necessary to take a new precise dose of the active ingredient and to administer it. This allows for a certain time a saving of dosage, since the particular end of the syringe according to the invention serves as a stopper while remaining available to easily renew the administration of a dose.

Figures 2 and 4 to 8 illustrate a second embodiment, wherein said syringe body 2 and said connector 20 are formed separately, said connector 20 having attachment means 26, 27 for attaching said connector 20 to said syringe body 2 .

The connector 20 comprises a sleeve 22 incorporating said fixing means, which is extended by said outer protective skirt 21.

Advantageously, said fixing means comprise screwing or detent means 26.

Preferably, these fastening means are final, that is to say after fixation, the connector can no longer be separated from the syringe body.

Figures 4 and 6 illustrate screwing means and Figures 5 and 7 illustrate snap-fastening means.

Preferably, said fixing means comprise locking means 27, such as a groove, which ensure a firm attachment of said connector 20 to said syringe body 2. This makes it possible to avoid that during an administration in a crisis situation said connector 20 can be disengaged from the syringe body 2 and thus constitute an object found detached in the oral cavity and / or swallowed, with a risk of suffocation during a false route.

Advantageously, said removable connector could also be provided with a plug, for example formed by a suitable mobile accessory, to form a sealed plug device of the opening of the ampoule and thus to preserve the alcoholic quality of a possible evaporation.

Various modifications are possible for a person skilled in the art without departing from the scope of the present invention as defined by the appended claims.

Claims

claims

1. - Device for administering an active ingredient by oral mucosal route, characterized in that it comprises:

- a bulb (1) containing a liquid, said bulb having a single opening defining a peripheral axial edge (1 1) and closed by a lid (10),

a syringe body (2) provided with a dispensing orifice for dispensing said at least one active principle on the gingivo-jugal mucosae,

a piston (3) contained in said syringe body (2),

a piston rod (4) connected to said piston (3) for moving said piston in said syringe body (2),

- a connector (20) formed integrally with or attached to said syringe body (2), said connector (20) being adapted to connect sealingly to said bulb (1), said connector (20) having a perforator internal device (23) for perforating said lid (10) of said ampoule (1) and connecting the inside of said ampoule (1) with said syringe body (2), said internal perforator (23) forming said body distribution orifice syringe (2) during the distribution of the active ingredient on said gingivo-jugal mucosa, said connector further comprising an outer protective skirt (21) to create a gingivo-jugal cavity by removing the mucous membrane of the gingival mucosa during the time deposition and complete absorption of said liquid, said outer protective skirt (21) surrounding said internal perforator (23), and said connector (20) having an annular receiving space (24) for receiving said peripheral axial edge (1 1 ) of said bulb (1), said annular receiving space (24) being defined between said inner perforator (23) and said outer protective skirt (21).

2. - Device according to claim 1, wherein said syringe body (2) and said connector (20) are integrally formed.

3. - Device according to claim 1, wherein said syringe body (2) and said connector (20) are formed separately, said connector (20) having fixing means (26, 27) for fixing said connector (20) to said syringe body (2).

4. - Device according to claim 3, wherein said fixing means (26, 27) comprise means for screwing or latching (26).

5. - Device according to claim 3 or 4, wherein said fixing means (26, 27) comprise locking means (27), such as a groove, which ensure a firm attachment of said connector (20) on said body syringe (2).

6. - Device according to any one of the preceding claims, wherein said perforator (23) has a blunt end and non-aggressive.

7. - Device according to any one of the preceding claims, wherein said outer protective skirt (21) has a rounded outer shape, including hemispherical.

8. - Device according to any one of the preceding claims, wherein said syringe body (2) has graduations, allowing accurate dosing, including 0.01 ml.

9. - Device according to any one of the preceding claims, wherein said syringe body (2) comprises a movable slider (200), in particular lockable, for determining a benchmark of the reference dosage to be administered.

10. - Device according to any one of the preceding claims, wherein said ampoule (1) contains a hydro-alcoholic solution consisting of water and ethanol, preferably 40% to 60% ethanol and 60% to 40% water.

1 1. - Device according to claim 10, wherein said ampoule (1) contains an active ingredient dissolved in said aqueous-alcoholic solution.

12. - Device according to any one of the preceding claims, wherein the volume of said ampoule (1) is between 0.5 ml and 2ml.