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JPS5984819A - Pharmaceutical for prolonged release of chemical - Google Patents

Pharmaceutical for prolonged release of chemical

Info

Publication number
JPS5984819A
JPS5984819AJP19565182AJP19565182AJPS5984819AJP S5984819 AJPS5984819 AJP S5984819AJP 19565182 AJP19565182 AJP 19565182AJP 19565182 AJP19565182 AJP 19565182AJP S5984819 AJPS5984819 AJP S5984819A
Authority
JP
Japan
Prior art keywords
chemical
membrane
drug
resin layer
permeable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19565182A
Other languages
Japanese (ja)
Inventor
Michiharu Ando
安東 道治
Seiya Hosokawa
細川 誠也
Takashi Nakagawa
隆司 中川
Kazuo Kobayashi
和生 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co LtdfiledCriticalSekisui Chemical Co Ltd
Priority to JP19565182ApriorityCriticalpatent/JPS5984819A/en
Publication of JPS5984819ApublicationCriticalpatent/JPS5984819A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PURPOSE:The titled pharmaceutical, constituted of a backing member, a chemical-permeable resin layer laminated on one surface of the backing member and a water-soluble chemical sealed in a water-permeable membrane in the above-mentioned resin layer, and capable of releasing the chemical at a controlled rate for a long term. CONSTITUTION:A pharmaceutical for prolonged release of a chemical having a backing member 1, a chemical-permeable resin layer 2 laminated on one surface of the backing member 1 and a water-soluble chemical 4 sealed in a water- permeable membrane 3 in the above-mentioned resin layer 2. The water-soluble chemical 4 sealed in the membrane 3 permeable to the aqueous solution of the chemical 4 is dissolved by the diffusion of moisture from the surface of application, passed through the membrane 3 and the resin layer 2 and diffuses to the surface in contact with the skin or mucous membrane. Thus, the chemical 4 is released at substantially a constant controlled rate for a long term, and the release rate can be variously adjusted according to the kind of the chemical 4 by selecting the resin or membrane.

Description

Translated fromJapanese

【発明の詳細な説明】本発明は、薬理活性を有する水溶性薬剤を長期にわたっ
て、制御された速度で放出する薬剤徐放性製剤に関する
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to sustained drug release formulations that release pharmacologically active water-soluble drugs at a controlled rate over an extended period of time.

薬剤を投与して所期の治療効果を達成するには、疾患部
又は循環系に長期間にわたって薬剤を有効濃度以上に維
持することが望ましく、このため、従来より薬剤を制御
された速度で放出する徐放性薬剤が種々提案されている
。代表的には、特公昭5.4−16566号公報に記載
されているように、外側表面をなす裏打ち部材と、皮膚
又は粘膜との接着面をなす感圧性接着剤層と、これら裏
打ち部材及び接着剤層との間の薬剤を含有する薬剤貯蔵
層とからなる積層体である。貯蔵層は、薬剤を透過させ
て、その放出速度を制御する樹脂層と、このような樹脂
層中に例えば、単に分散され、或いはマイクロカプセル
として分散された薬剤とからなり、薬剤は貯蔵層から接
着剤層を拡散して、制御された速度で表面から徐放され
、接着面における皮膚若しくは粘膜から体内に吸収され
る。場合によっては、貯蔵層と接着剤層との間に、薬剤
の拡散速度が貯蔵層よりも小さい制御層を介在させるこ
とがある。
To achieve the desired therapeutic effect by administering a drug, it is desirable to maintain the drug at an effective concentration or higher in the diseased area or the circulatory system for a long period of time, and for this reason it is conventional to release the drug at a controlled rate. Various sustained release drugs have been proposed. Typically, as described in Japanese Patent Publication No. 5.4-16566, a backing member forming the outer surface, a pressure-sensitive adhesive layer forming the adhesive surface to the skin or mucous membrane, and these backing members and This is a laminate consisting of an adhesive layer and a drug storage layer containing a drug. The storage layer consists of a resin layer that is permeable to the drug and controls its release rate, and a drug that is dispersed, for example, simply or as microcapsules, in such a resin layer, and the drug is released from the storage layer. It diffuses through the adhesive layer, is released slowly from the surface at a controlled rate, and is absorbed into the body through the skin or mucous membrane at the adhesive surface. In some cases, a control layer in which the diffusion rate of the drug is lower than that of the storage layer may be interposed between the storage layer and the adhesive layer.

しかし、このような徐放性製剤においては、薬剤が直ち
に樹脂層内を拡散するので、薬剤が短期間に放出されて
しまうことが多く、同時に、薬剤が実質的に一定の速度
で放出される徐放性が十分満足すべきものではない。更
に、薬剤の種類に応じてその放出速度を種々変化させて
制御することが困難であって、放出速度が限定されるこ
とが多い。
However, in such sustained-release formulations, the drug immediately diffuses through the resin layer, often resulting in drug release over a short period of time, and at the same time, the drug is released at a substantially constant rate. Sustained release properties are not fully satisfactory. Furthermore, it is difficult to vary and control the release rate depending on the type of drug, and the release rate is often limited.

本発明は上記した問題を解決するためになされたもので
あって、長期間にわたって水溶性薬剤を実質的に一定の
速度で放出させる徐放性にすぐれ、更に、薬剤の放出速
度を広い範囲で制御することができる徐放性製剤を提供
することを目的とする。
The present invention has been made to solve the above-mentioned problems, and has excellent sustained release properties that release water-soluble drugs at a substantially constant rate over a long period of time. The objective is to provide a sustained release formulation that can be controlled.

本発明の徐放性製剤は、裏打ち部材と、この裏打ち部材
の一面に積層された薬剤透過性樹脂層と、この樹脂層内
において水透過性膜内に封入された水溶性薬剤とからな
ることを特徴とするものである。
The sustained release preparation of the present invention comprises a lining member, a drug-permeable resin layer laminated on one surface of the lining member, and a water-soluble drug encapsulated in a water-permeable membrane within the resin layer. It is characterized by:

以下に実施例を示す図面に基づいて本発明を説明する。The present invention will be described below based on drawings showing examples.

裏打ち部材1は非可撓性又は可撓性いずれであってもよ
いが、徐放性製剤の多くが皮膚や粘膜上に接着されて適
用されるので、好ましくは可撓性の薬剤不透過性のシー
ト材料であって、好ましい具体例として、酢酸セルロー
ス、エチルセルロース、セロハン、ポリエチレンテレフ
タレート、可塑化酢酸ビニル−塩化ビニル共重合体、ポ
リアミド、ポリエチレン、ポリ塩化ビニリデン等の樹脂
シート若しくはフィルム、アルミニウム箔等の金属箔、
及びこれらの2以上の積層体を挙げることができる。
The backing member 1 may be either non-flexible or flexible, but is preferably flexible and drug-impermeable because many sustained-release preparations are applied on the skin or mucous membranes by adhesion. Preferred specific examples include resin sheets or films of cellulose acetate, ethyl cellulose, cellophane, polyethylene terephthalate, plasticized vinyl acetate-vinyl chloride copolymer, polyamide, polyethylene, polyvinylidene chloride, aluminum foil, etc. metal foil,
and a laminate of two or more of these.

本発明の徐放性製剤においては、この裏打ち部材1の一
表面上に薬剤水溶液透過性を有する樹脂層からなる薬剤
透過層2が積層されている。
In the sustained-release preparation of the present invention, a drug-permeable layer 2 made of a resin layer having permeability to an aqueous drug solution is laminated on one surface of the lining member 1 .

この薬剤透過層を構成する樹脂は、薬剤水溶液を透過す
れば特に制限されず、種々の樹脂を用いることができる
が、好ましくは、ポリジメチルシロキサンのようなシリ
コーン樹脂、ポリヒドロキシルエチル(メタ)アクリレ
ート、ポリメチルアクリレート、ポリブチルアクリレー
ト等のようなポリ (メタ)アクリル酸エステル、ポリ
アクリル酸、その塩、ポリビニルアルコール、ポリ酢酸
ビニル、ポリビニルピロリドン、ヒドロキシエチルセル
ロース、カルボキシメチルセルロース、可塑化ポリアミ
ド、ポリイソブチレン、スチレンーブクジエンゴム、コ
ラーゲン、ゼラチン、アカシアゴム、トラガカントゴム
等の合成又は天然の樹脂やゴムが好ましく用いられる。
The resin constituting this drug-permeable layer is not particularly limited as long as it is permeable to the aqueous drug solution, and various resins can be used. Preferably, silicone resins such as polydimethylsiloxane, polyhydroxylethyl (meth)acrylate, etc. , poly(meth)acrylic esters such as polymethyl acrylate, polybutyl acrylate, polyacrylic acid, its salts, polyvinyl alcohol, polyvinyl acetate, polyvinylpyrrolidone, hydroxyethylcellulose, carboxymethylcellulose, plasticized polyamide, polyisobutylene, Synthetic or natural resins and rubbers such as styrene-buccadiene rubber, collagen, gelatin, acacia gum, and tragacanth gum are preferably used.

このような樹脂層内に固形水溶性薬剤3を封入した膜4
が包含されている。尚、薬剤はその熔解性を調整するた
めに、上記した樹脂、又は上記樹脂及び例えば鉱油、シ
リコーン油のほか、ジエチレングリコール、プロピレン
グリコール、ポリエチレングリコール等のグリコール類
、オリーブ油、スクアレン、ラノリン等の油脂類等のよ
うな溶剤と共に混合され、成形されて、膜内に封入され
ていてもよい。
A membrane 4 in which a solid water-soluble drug 3 is encapsulated in such a resin layer
is included. In addition, in order to adjust the solubility of the drug, in addition to the above-mentioned resins, or the above-mentioned resins and mineral oils, silicone oils, glycols such as diethylene glycol, propylene glycol, and polyethylene glycol, and oils and fats such as olive oil, squalene, and lanolin. It may be mixed with a solvent such as, etc., molded, and encapsulated in a membrane.

このような薬剤を封入するための膜は、水に溶解した薬
剤を透過することを要し、例えば、ポリビニルアルコー
ル、半アセタール化ポリビニルアルコール、セロハン、
低アセチル化酢酸セルロース、メチルセルロース、エチ
ルセルロース、不溶性デンプン等からなる膜が用いられ
る。
Membranes for encapsulating such drugs must be permeable to drugs dissolved in water, and include, for example, polyvinyl alcohol, semi-acetalized polyvinyl alcohol, cellophane,
Membranes made of low acetylated cellulose acetate, methylcellulose, ethylcellulose, insoluble starch, etc. are used.

本発明において用いる薬剤は、上記したように、當態で
は固形の水溶性薬剤であり、水溶液として皮膚や粘膜か
ら体内に吸収されて、所期の薬理効果を発現する薬剤で
あれば、特に制限されるものではないが、例えば、ニト
ログリセリン、硝酸イソソルビド等の抗狭心症剤、アセ
チルサリチル酸、サリチル酸ナトリウム、ジクロフェナ
ック、アルクロフェナックの消炎鎮痛剤等を挙げること
ができる。即ち、これらの薬剤は、製剤の皮膚等への貼
着面から吸収された水分が前記した樹脂層及び膜を透過
して、膜内の薬剤を熔解し、そこで、この溶解した薬剤
が膜及び樹脂層を透過して、貼着面に放出されるのであ
る。
As mentioned above, the drug used in the present invention is a solid water-soluble drug in its actual state, and if it is absorbed into the body through the skin or mucous membrane as an aqueous solution and exerts the desired pharmacological effect, there are no particular restrictions. Examples include anti-anginal agents such as nitroglycerin and isosorbide nitrate, and anti-inflammatory and analgesic agents such as acetylsalicylic acid, sodium salicylate, diclofenac and alclofenac. In other words, with these drugs, water absorbed from the surface of the formulation that is adhered to the skin, etc., permeates the resin layer and membrane described above and melts the drug within the membrane, and then the dissolved drug is absorbed into the membrane and the membrane. It passes through the resin layer and is released onto the adhesive surface.

本発明の徐放性観剤は、通當、薬剤透過層2の上に、皮
膚又は粘膜に製剤を貼着して適用するために、感圧性接
着剤層5が設けられる。この接着剤は、皮膚学及び粘膜
学的に許容され、且つ、用いる薬剤を透過させるもので
あれば任意であるが、具体的には、例えば、アクリル樹
脂系やシリコーン樹脂系の接着剤のほか、天然ゴム、ポ
リウレタン、ポリイソプレン、ポリイソブチレン、ポリ
ブタジェン等のゴム系接着剤、ポリビニルピロリドン、
ポリ酢酸ビニル等のビニル系接着剤、エチルセルロース
、メチルセルロース等のセルロース系接着剤が用いられ
る。必要に応じて、この接着剤層の上には、シリコーン
樹脂を塗布した樹脂フイルム等、適宜の剥離シート6が
貼着される。
In the sustained-release ornamental preparation of the present invention, a pressure-sensitive adhesive layer 5 is generally provided on the drug-permeable layer 2 in order to apply the preparation to the skin or mucous membrane. This adhesive may be any adhesive as long as it is dermatologically and mucosologically acceptable and is permeable to the drug used, but specific examples include acrylic resin adhesives, silicone resin adhesives, and other adhesives. , rubber adhesives such as natural rubber, polyurethane, polyisoprene, polyisobutylene, polybutadiene, polyvinylpyrrolidone,
Vinyl adhesives such as polyvinyl acetate and cellulose adhesives such as ethyl cellulose and methyl cellulose are used. If necessary, a suitable release sheet 6 such as a resin film coated with a silicone resin is pasted on the adhesive layer.

以上のように、本発明の徐放性製剤によれば、薬剤水溶
液透過性膜内に封入された水溶性薬剤は、貼着面からの
水分の拡散により熔解した後、膜及び籠脂層を経て、皮
膚若しくは粘膜に接する表面に拡散)°るので、長期間
にわたって実質的に一定の制御された速度で放出され、
しかも、樹脂や膜を選ぶことによって、薬剤の種類に応
じて、その放出速度を種々に調整することができる。
As described above, according to the sustained release preparation of the present invention, the water-soluble drug encapsulated in the aqueous drug solution permeable membrane is melted by the diffusion of moisture from the adhesive surface, and then the membrane and cage fat layer are removed. and then diffuses to surfaces in contact with the skin or mucous membranes), so that it is released at a substantially constant and controlled rate over an extended period of time;
Furthermore, by selecting the resin and membrane, the release rate can be adjusted in various ways depending on the type of drug.

以下に実施例を挙げて本発明を説明するが、本発明はこ
れら実施例により何ら限定されるものではない。
The present invention will be explained below with reference to Examples, but the present invention is not limited to these Examples in any way.

実施例1低アセチル化セルロース20重量部を熱エタノール80
重量部に溶解して均一な溶液とし、これをポリエチレン
テレフタレートフィルム上に塗布、乾燥した後、ポリエ
チレンテレフタレートフィルムから剥離して、厚みが約
35μmの低アセチル化セルロース膜を得た。
Example 1 20 parts by weight of low acetylated cellulose was added to 80 parts by weight of hot ethanol.
The solution was dissolved in parts by weight to obtain a homogeneous solution, which was applied onto a polyethylene terephthalate film, dried, and then peeled off from the polyethylene terephthalate film to obtain a low acetylated cellulose film having a thickness of about 35 μm.

これを直径4cmの円形に裁断し、このような膜の中央
上にニトログリセリン0.1gを置いた後、その周縁を
約1 cmの幅に上記したのと同じ低アセチル化セルロ
ースを塗布し、この上に別の同じ寸法の膜を重ね、乾燥
、接着して、薬剤を膜内に封入した。
This was cut into a circle with a diameter of 4 cm, and after placing 0.1 g of nitroglycerin on the center of such a membrane, the same low acetylated cellulose as described above was applied to the periphery to a width of about 1 cm. Another membrane of the same size was placed on top of this, dried and adhered, and the drug was encapsulated within the membrane.

別に、2−エチルへキシルメタクリレート50重量部、
ブチルアクリレート50重量部及び1,6−ヘキサンシ
オールジメタクリレート0.02重量部からなる共重合
体のシクロヘキサン溶液をアルミニウム箔上に塗布し、
乾燥して、厚み約40μmの樹脂層を形成した。これを
直径5 cmに裁断し、その周縁に高さLcmの隔壁を
設け、この隔壁内にニトログリセリンを封入した上記膜
を置き、更に、この中に前記低アセチル化セルロース溶
液を注入し、乾燥して、厚み約90μmの樹脂層を形成
した。この後、上記隔壁を除去し・て、本発明の徐放性
製剤を得た。
Separately, 50 parts by weight of 2-ethylhexyl methacrylate,
Coating a cyclohexane solution of a copolymer consisting of 50 parts by weight of butyl acrylate and 0.02 parts by weight of 1,6-hexanethiol dimethacrylate on aluminum foil,
It was dried to form a resin layer with a thickness of about 40 μm. This was cut to a diameter of 5 cm, a partition wall with a height of L cm was provided around the periphery, the above membrane encapsulating nitroglycerin was placed inside the partition wall, the low acetylated cellulose solution was poured into this, and the solution was dried. As a result, a resin layer having a thickness of about 90 μm was formed. Thereafter, the partition wall was removed to obtain a sustained release preparation of the present invention.

この製剤は、狭心症治療用徐放性製剤として用いること
ができる。
This preparation can be used as a sustained release preparation for the treatment of angina pectoris.

実施例2実施例1において、薬剤としてニトログリセリンの代わ
りにサリチル酸ナトリウムを用いた以外は実施例1と全
く同様にして徐放性製剤を得た。
Example 2 A sustained release preparation was obtained in exactly the same manner as in Example 1 except that sodium salicylate was used instead of nitroglycerin as the drug.

この製剤は消炎用徐放性製剤として用いることができる
This preparation can be used as an anti-inflammatory sustained release preparation.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の徐放性製剤の一実施例を示す要部断面図
である。1・・・裏打ち部材、2・・・薬剤透過層、3・・・薬
剤、4・・・膜、5・・・接着剤層、6・・・剥離シー
ト。特許出願人 積水化学工業株式会社代表者藤 沼 基 利
The drawing is a cross-sectional view of essential parts showing one embodiment of the sustained-release preparation of the present invention. DESCRIPTION OF SYMBOLS 1... Backing member, 2... Drug-permeable layer, 3... Drug, 4... Membrane, 5... Adhesive layer, 6... Release sheet. Patent applicant Mototoshi Fujinuma, representative of Sekisui Chemical Co., Ltd.

Claims (1)

Translated fromJapanese
【特許請求の範囲】[Claims](11裏打ち部材と、この裏打ち部材の一面に積層され
た薬剤透過性樹脂層と、この樹脂層内において水透過性
膜内に封入された水溶性薬剤とからなることを特徴とす
る徐放性製剤。
(11) A sustained-release drug characterized by comprising a lining member, a drug-permeable resin layer laminated on one surface of this lining member, and a water-soluble drug encapsulated in a water-permeable membrane within this resin layer. formulation.
JP19565182A1982-11-081982-11-08Pharmaceutical for prolonged release of chemicalPendingJPS5984819A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP19565182AJPS5984819A (en)1982-11-081982-11-08Pharmaceutical for prolonged release of chemical

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP19565182AJPS5984819A (en)1982-11-081982-11-08Pharmaceutical for prolonged release of chemical

Publications (1)

Publication NumberPublication Date
JPS5984819Atrue JPS5984819A (en)1984-05-16

Family

ID=16344711

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP19565182APendingJPS5984819A (en)1982-11-081982-11-08Pharmaceutical for prolonged release of chemical

Country Status (1)

CountryLink
JP (1)JPS5984819A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS62298520A (en)*1986-06-131987-12-25アルザ・コ−ポレ−ションTransdermal drug administration system

Citations (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS57139011A (en)*1981-02-201982-08-27Nitto Electric Ind Co LtdMaterial for releasing physiologically active substance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS57139011A (en)*1981-02-201982-08-27Nitto Electric Ind Co LtdMaterial for releasing physiologically active substance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS62298520A (en)*1986-06-131987-12-25アルザ・コ−ポレ−ションTransdermal drug administration system

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