KR102067330B1 - Patch for treating oral wound - Google Patents

Abstract

The present invention relates to a patch that is attached to the oral wound to treat the wound, and more particularly, to the adhesive layer and the adhesive layer that is attached to the oral wound to release the drug for treating the wound, the patch is the oral wound It includes a support supply layer for continuously supplying the drug to the adhesive layer after a certain time after being attached to the, for the oral wound treatment patch that can continuously release the wound treatment drug.

Description

Patch for treating oral wound}

The present invention is directed to a patch attached to an oral wound to treat a wound.

In the case of a wound in the oral cavity, the drug of the ointment preparation is generally applied to the wound site, but the drug is easily lost by saliva. Therefore, in order to solve the above problems, a patch (film) for attaching to oral wounds and for treating wounds has been developed as in the following patent document.

(Patent literature)

Patent Document 1: Publication No. 10-2017-0061588 (June 05, 2017 published) "Oral hemostasis and wound protection film"

Patent Document 2: Publication No. 10-2006-0037227 (2006. 05. 03.) "Fentanyl-containing patch for oral mucosa"

In the case of treating the oral wound using the patch (film), it is possible to overcome the disadvantage that the drug is easily lost, but according to the diffusion law of Pick, the amount of diffusion is the concentration gradient between the drug-supported adhesive layer and the external environment. As the drug release continues in the conventional patch (film), the concentration gradient decreases, and the amount of drug released rapidly decreases, so that it is not possible to continuously release a certain amount of drug to effectively treat oral wounds. do.

The present invention has been made to solve the above problems,

It is an object of the present invention to provide a patch for spherical wound treatment that can continuously release the drug for wound treatment.

The present invention is implemented by the embodiment having the following configuration to achieve the above object.

According to one embodiment of the present invention, the patch attached to the oral wound site according to the present invention to treat the oral wound is attached to the oral mucosa adhesive layer for releasing a drug for treating the oral wound, and supports the adhesive layer It is characterized in that it comprises a support supply layer for continuously supplying the drug to the adhesive layer after a certain time after the patch is attached to the oral mucosa, and a protective layer for protecting the adhesive layer before use of the patch.

According to another embodiment of the present invention, in the patch for treating oral wounds according to the present invention, the support supply layer discharges the drug stored therein into the adhesive layer through the second communication part when saliva enters through the first communication part. The drug storage supply unit, the first communication unit for communicating the drug storage supply unit and the outside, the second communication unit for communicating the drug storage supply unit and the adhesive portion, and the first communication unit is closed and biodegraded by saliva and the first Opening the communication unit characterized in that it comprises an opening and closing portion so that saliva can be supplied to the drug storage supply.

According to another embodiment of the present invention, in the patch for treating oral wounds according to the present invention, the drug storage supply part is formed inside the support supply layer, and is separated into a first space and a second space by an isolation part. An accommodating part accommodating the superabsorbent resin in the first space and accommodating the drug in the second space; An isolation part formed in the accommodation part to isolate the first space in which the superabsorbent resin is located and the second space in which the drug is located; A super absorbent resin positioned in the first space and absorbing and expanding moisture when saliva flows through the first communication portion; Located in the second space and the superabsorbent resin absorbs moisture to expand and include the drug discharged to the pressure-sensitive adhesive layer through the second communication portion, when pushing the isolation portion, the first space is in communication with the first communication portion The second space is characterized in that the communication with the second communication unit.

According to another embodiment of the present invention, in the patch for treating oral wounds according to the present invention, the isolation portion is formed by protruding from one side in the accommodation portion and connected to the other side, and made of a flexible material and more than the width of the accommodation portion. When the superabsorbent polymer in the first space is expanded to have a large width to push the drug located in the second space, the opening and closing portion is different in size or decomposition rate is different for each opening and closing, the drug storage when the patch is attached The saliva supply time is different for each supply unit is characterized in that the drug is sequentially supplied to the adhesive layer for each drug storage supply unit.

The present invention can obtain the following effects by the above embodiment.

The present invention can continuously release the drug for treating oral wounds to enhance the therapeutic effect.

1 is a perspective view of a patch for treating oral wounds according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of the patch for treating oral wounds according to an embodiment of the present invention.
Figure 3 is a cross-sectional view of the patch for treating oral wounds according to another embodiment of the present invention.
4 and 5 is a reference diagram for explaining the drug discharge process of the oral wound treatment patch according to an embodiment of the present invention.
Figure 6 is a reference diagram for explaining a method of manufacturing a patch for treating oral wounds according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the patch for treating oral wounds according to the present invention will be described in detail. Unless otherwise defined, all terms in this specification are equivalent to the general meaning of the terms understood by those of ordinary skill in the art to which the present invention pertains and, if they conflict with the meanings of the terms used herein, Follow the definition used in the specification. In addition, detailed description of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted. Throughout the specification, when a part is said to "include" a certain component, it means that it may further include other components, without excluding other components unless specifically stated otherwise.

When the oral wound treatment patch according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6, the oral wound treatment patch is attached to the oral wound and releases a drug for treating oral wounds. And a support supply layer (2) for supporting the adhesive layer (1) and continuously supplying the drug to the adhesive layer (1) after a predetermined time after the patch is attached to the oral wound. Although not shown, the patch may further include a protective layer that protects the adhesive layer 1 when the patch is not used. The protective layer is attached to the adhesive layer (1) prior to the use of the patch to protect the adhesive layer (1) and removed when using the patch, for example, a conventional release paper, a release sheet, a film having a tacky property The patch may be used after removing the protective layer when the patch is attached to the oral mucosa.

The adhesive layer (1) is attached to the oral wound area to release the drug for treating the oral wound through the microchannel, a conventional patch for treating a disease (including a wound) in the oral cavity or to release the drug for anesthesia It can be manufactured by the same component and manufacturing method as the adhesive layer of (film). In the conventional patch including the present invention, the adhesive layer is largely made of a drug and a polymer that generates adhesion when hydrated. When the patch is attached to the oral mucosa, the polymer of the adhesive layer is water. In contact with the adhesive to impart adhesion to the patch and the drug located between the polymers dissolves and exits the mucosa, emptying the microchannel in which the drug is located. In addition, when the adhesive layer is formed, a disintegrant is further included, and the patch is attached to the oral mucosa, and when the adhesive layer is reacted with water, the disintegrant is dissolved and released to form an adhesive layer ( Additional microchannels may be formed in 1) to facilitate drug release. The drug may be a conventional drug for treating oral wounds. For example, anti-inflammatory agents, antibiotics, sodium fusidine, etc. may be used, and a drug for coagulation having a hemostatic function is added to the drug supported on the adhesive layer 1. It may be mixed with the blood coagulation drug may be used, such as cellulose oxide. The polymer may be a conventional polymer that provides adhesion to be hydrated, for example, carboxymethyl cellulose, polyacrylic acid, and the like, and the disintegrant may be a conventional material that is dissolved by water contained in saliva, for example. Glycol, magnesium stearate and the like can be used.

The support supply layer (2) supports the adhesive layer (1) and is configured to continuously supply the drug to the adhesive layer (1) after a predetermined time after the patch is attached to the oral wound, drug storage supply unit 21 ), A first communication portion 22, a second communication portion 23, the opening and closing portion 24 and the like. The support supply layer 2 may be made of a biocompatible polymer (eg, HEMA (2-hydroxyethyl methacrylate)), and may not move drugs, superabsorbent resins, saliva, but may move several nanometers of air. It may have pores.

The drug storage supply unit 21 is configured to discharge the drug stored therein to the adhesive layer 1 through the second communication unit 23 when saliva enters through the first communication unit 22, and the receiving unit ( 211), isolation 212, superabsorbent resin 213, drug 214 and the like.

The receiving portion 211 is formed in the support supply layer 2 and one side is in communication with the first communication portion 22, the other side is in communication with the second communication portion 23, the isolation portion 212 Is separated into the first space 211a and the second space 211b to accommodate the superabsorbent resin 213 in the first space 212a and to receive the drug 214 in the second space 212b. The first space 211a communicates with the first communication unit 22, and the second space 211b communicates with the second communication unit 23.

The isolation part 212 is formed in the accommodation part 211 to isolate the first space 211a in which the superabsorbent polymer 213 is located and the second space 211b in which the drug 214 is located. Protruding from one side in the receiving portion 211 is connected to the other side is formed of a flexible material and having a width larger than the width of the receiving portion 211, the superabsorbent resin located in the first space (211a) ( When 213 is inflated to push the drug 214 located in the second space (211b).

The superabsorbent resin 213 is located in the first space (211a) when the saliva flows through the first communication portion 22 is configured to absorb and expand the moisture, the conventional superabsorbent resin can be used. For example, a starch-based superabsorbent resin can be used. Since the super absorbent polymer has the ability to absorb water about 1000 times its own weight, when saliva flows through the first communication unit 21, the super absorbent polymer absorbs water and expands to push out the isolation unit 212. The drug 214 located in the second space 211b is supplied to the adhesive layer 1 through the second communication part 23.

The drug 214 is disposed in the second space 211b and discharged through the second communication part 23 when pressed by the isolation part 212, and used for the adhesive layer 1. The same drug can be used to treat damaged oral wounds.

The first communication unit 22 is configured to communicate the drug storage supply unit 21 with the outside, and when the patch is attached to the oral wound site, the first space 211a through the first communication unit 21. The saliva is supplied to the superabsorbent polymer 213 located at.

The second communication part 23 is configured to communicate the drug storage supply part 21 and the adhesive part 1, and the superabsorbent resin 213 located in the first space 211a expands to separate the isolation part ( When pressing 212, the drug 214 positioned in the second space 211b is supplied to the adhesive layer 1 through the second communication unit 23.

The opening and closing part 24 is configured to close the first communication part 22 and is biodegraded by saliva so that the saliva can be supplied to the first space 211a by opening the first communication part 22. . For example, the opening and closing part 24 may be a biodegradable polymer (N-AcAc chitosan) that is biodegraded by an enzyme (eg, lysozyme, etc.) contained in saliva. Ac) and acrylation (Ac) means a polymer). When the patch is attached, the opening and closing part 24 may be formed so that the saliva supply time is different for each drug storage supply part 21. For example, as illustrated in FIG. 2, the opening and closing part 24 is provided for each drug storage supply part 21. By varying the size of each of the first communication hole (23) to vary the degree (volume) can be closed so that the timing of opening each first communication hole 22 is different. In addition, although not shown, the opening and closing portions 24 may be disassembled at different speeds so that the first communication portions 22 may be opened at different times. For example, to change the N-acetylation or N-acrylation information of the polymer (N-AcAc chitosan), or to irradiate the solution containing the polymer (N-AcAc chitosan) with ultraviolet rays in order to form the opening and closing part 22 of each first By controlling the ultraviolet flux for each of the communication holes 22, the decomposition rate of each of the shielding portion 24 may be different. In addition, although not shown, the opening and closing portion 24 may be formed at the end of the second communication portion 23, in which case the opening and closing portion formed in the second communication portion 23 saliva passing through the adhesive layer (1) It may be biodegraded by, and the opening and closing portion formed in the second communication portion 23 may be formed to decompose earlier than the opening and closing portion 24 formed in the first communication portion 22. Oral wound treatment patch according to another embodiment of the present invention, as shown in Figure 3, protruding from the lower surface of the support supply layer (2) is located in the adhesive layer (1), the second communication portion ( It may further include a protrusion communication portion 25 including a hollow 251 in communication with the 24, and a second opening and closing portion 26 for closing the end of the hollow 251 of the protrusion communication portion 25. . An end of the protruding communication portion 25 may be located in the adhesive layer 1 or may protrude from the adhesive layer 1. Since the second opening and closing part 26 is made of the same material as the opening and closing part 25 to perform the same role, a detailed description thereof will be omitted. When the end of the protruding communication portion 25 is located in the adhesive layer 1, the second opening / closing portion 26 is melted by saliva introduced through the adhesive layer 1 so that the drug storage supply portion 21 When the drug is supplied to the adhesive layer 1 and the end of the protruding communication portion 25 protrudes from the adhesive layer 1, saliva immediately melts the second opening / closing portion 26 and the drug storage supply portion 21. The drug will be supplied directly to the oral mucosa.

Hereinafter, the drug release process of the patch for treating oral wounds having the above configuration will be described with reference to FIGS. 2, 4, and 5. FIG. When the patch shown in FIG. 2 is applied to the wounded oral mucosa, the adhesive layer 1 is attached to the oral mucosa, and the drug supported on the adhesive layer 1 is dissolved by saliva and discharged through the microchannel. At the same time, saliva decomposes the opening part 24, and after a predetermined time, the opening and closing part 24 is completely melted so that the first communication part 22 is opened so that saliva is supplied to the first space 211a. As shown in FIG. 4, the superabsorbent resin 213 positioned in the first space 211a absorbs and expands water absorbed in saliva to push the isolation unit 212 to be located in the second space 211a. The drug is discharged to the adhesive layer 1 through the second communication part 23. The drug supplied to the adhesive layer 1 is discharged to the oral mucosa through the microchannel formed in the adhesive layer 1. As shown in FIG. 5, when the drug located in the second space 211b is exhausted, the patch is removed from the oral cavity. The present invention continuously supplies the drug to the adhesive layer 1 for a certain period of time after a certain time (the time when the opening and closing part 24 is completely decomposed), unlike a conventional patch that only releases the drug by attaching the drug to the adhesive layer 1. It includes a support supply layer (2), the opening and closing portion 24 has a different time to completely decompose each drug storage supply 21 to supply the drug to the adhesive layer (1) for each drug storage supply (21) Since the time is different, a certain amount of drug can be released continuously.

The method of manufacturing the oral wound treatment patch will be briefly described with reference to FIG. 6, wherein the manufacturing method includes an indentation portion 101 formed by being recessed from an upper surface to a lower side, and an agent communicating the outside with the indentation portion 101. A bottom layer forming step of forming a bottom layer 100 having the first communication hole 22 formed therein; The opening and closing part 24 is formed in the first communication hole 22 of the lower layer 100 and the opening and closing step of loading the superabsorbent resin 213 into the recess 101 and the resin loading step, and the lower layer 100 A first bonding step of combining the lower layer 100 and the intermediate layer 200 so as to form an intermediate layer 200 covering the top of the upper side) so that the intermediate layer 200 positioned in the recess 101 faces downward; A second coupling step of coupling the intermediate layer 200 and the upper layer 300 after forming the upper layer 300 having the second communication hole 23 formed thereon; A drug loading step of loading the drug (214) into the depression (101) above the intermediate layer (200) through the second communication hole (23); And an adhesive layer forming step of forming the adhesive layer 1 on the upper surface of the upper layer 300. The lower layer 100 and the like are formed using a biocompatible polymer. For example, a solution in which a monomer (for example, 2-hydroxyethyl methacrylate (HEMA), etc.) and a crosslinking agent (for example, EGDMA (ethylenegylcol, etc.) are mixed, is used. The bottom layer on which the recess 101, the first communication hole 22, and the like are formed may be formed through printing / stamping or photo-lithography. The opening and closing portion 24 injects a solution including a biodegradable polymer (N-AcAcchitosan) and a photoinitiator (PI) to form the opening and closing portion 24 through an inlet of the first communication hole 22, and the ultraviolet ray to the solution. The opening and closing part 24 can be formed by irradiating (UV) and photopolymerizing. The bottom layer 100, the middle layer 200, and the top layer 300 may be combined by various methods, for example, by using an adhesive. Since the adhesive layer is formed using a solution containing the drug, an adhesive polymer when hydrated, a disintegrating agent, and the like, a detailed description thereof will be omitted.

In the above, the Applicant has described preferred embodiments of the present invention, but these embodiments are merely one embodiment for implementing the technical idea of the present invention, and any changes or modifications may be made as long as the technical idea of the present invention is implemented. Should be interpreted as being within the scope.

1: adhesive layer 2: support supply layer 21: drug storage supply
22: first communication unit 23: second communication unit 24: opening and closing portion
25: protrusion communicating part 26: second opening and closing part 211: receiving part
212: isolation 213: superabsorbent resin 214: drug
251: Hollow 211a: First space 211b: Second space

Claims (4)

In the patch for oral wound treatment having an adhesive layer attached to the oral mucosa to release the drug for treating the oral wound, and a protective layer to protect the adhesive layer before use of the patch,
The oral wound treatment patch further includes a support supply layer supporting the adhesive layer and continuously supplying the drug to the adhesive layer after a predetermined time after the patch is attached to the oral mucosa,
The support supply layer includes a drug storage supply unit for discharging the drug stored therein to the adhesive layer through the second communication unit when saliva enters through the first communication unit, and a first communication unit communicating with the drug storage supply unit and the outside; A second communication part communicating the drug storage supply part and the adhesive part, and an opening and closing part which closes the first communication part and is biodegraded by saliva to open the first communication part so that saliva can be supplied to the drug storage supply part. ,
The drug storage supply part is formed inside the support supply layer, and is separated into a first space and a second space by an isolation part to accommodate the superabsorbent resin in the first space and to receive the drug in the second space. Wealth; An isolation part formed in the accommodation part to isolate the first space in which the superabsorbent resin is located and the second space in which the drug is located; A super absorbent polymer positioned in the first space and absorbing and expanding moisture when saliva flows through the first communication unit; Located in the second space and the superabsorbent resin absorbs moisture and expands to push the isolation portion, the drug is discharged to the adhesive layer through a second communication portion; and the first space is the first communication portion and And the second space communicates with the second communication portion. delete delete delete

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