JP3026316B2 - Hydrogel for wound dressing - Google Patents

Hydrogel for wound dressing

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Publication number
JP3026316B2
JP3026316B2 JP3271823A JP27182391A JP3026316B2 JP 3026316 B2 JP3026316 B2 JP 3026316B2 JP 3271823 A JP3271823 A JP 3271823A JP 27182391 A JP27182391 A JP 27182391A JP 3026316 B2 JP3026316 B2 JP 3026316B2
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JP
Japan
Prior art keywords
wound
hydrogel
dressing
temperature
wound dressing
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.)
Expired - Lifetime
Application number
JP3271823A
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Japanese (ja)
Other versions
JPH0584290A (en
Inventor
光夫 岡野
幹夫 小出
由紀夫 清田
誠人 大西
賢一 志村
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Terumo Corp
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Terumo Corp
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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、創傷,熱傷等による皮
膚欠損受傷の際、該皮膚欠損部位に適用され、該皮膚欠
損部位と接する創面と固着せず、治癒に伴なって容易に
剥離可能な創傷被覆用ヒドロゲルに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a skin defect site when a skin defect is caused by a wound, a burn or the like, and does not adhere to a wound surface in contact with the skin defect site, and easily peels off with healing. A possible wound dressing hydrogel.

【0002】[0002]

【従来の技術】外傷性の皮膚創傷および採皮創等の創傷
および疾患に伴う創部に対する創傷治癒方法としては、
大別して創傷部を乾燥状態に保ち、痂皮を形成させて治
癒を行ういわゆるdry dressingと、適度の
湿潤環境をつくり、速やかな表皮細胞の遊走を行うwe
t dressingとが知られており、前者は浸出液
の貯留が少なく、感染が起こりにくく、また後者は創傷
の治癒も速やかであり、創傷部表面の乾燥壊死が少な
く、創面の保護効果も有することなどが知られている。
2. Description of the Related Art Wound healing methods for wounds such as traumatic skin wounds and skin wounds and wounds associated with diseases include:
So-called dry dressing, which keeps the wound in a dry state and forms a crust for healing, and we, which create an appropriate moist environment and promptly migrate epidermal cells
Known as t dressing, the former has less exudate accumulation and is less likely to cause infection, and the latter has faster wound healing, has less dry necrosis on the wound surface, has a protective effect on the wound surface, etc. It has been known.

【0003】従来はガーゼ,脱脂綿が用いられていた
が、浸出液を速やかに吸収するために、創傷面が脱水症
状になり乾燥してしまい、その結果痂皮ができる。この
際にガーゼが創面に固着して離れにくく、剥す際に患者
に苦痛を与えてしまい、出血等を伴うものである。また
滲出液がガーゼを通して表面に出てくると、細菌が傷に
侵入する可能性が考えられる。
Conventionally, gauze and cotton wool have been used. However, since the exudate is rapidly absorbed, the wound surface becomes dehydrated and becomes dry, resulting in crusting. At this time, the gauze adheres to the wound surface and hardly separates, causing pain to the patient when peeling, and causing bleeding and the like. If the exudate comes to the surface through the gauze, it is possible that bacteria may enter the wound.

【0004】これに代わるものとして、吸湿性パッドと
非固着性フィルムからなるスポンジ状パッドと防水性絆
創膏を組み合わせたドレッシング(Airstri
,Smith & Nephew Limite
d)や高水蒸気透過性を有するポリウレタンフィルムと
接着剤層からなる接着性ドレッシング(Op−Site
,Smith & Nephew Limited;
Bioclusive,Johnson & Joh
nson;Tegaderm3M)などが市販されて
いる。また、被覆材の創傷部と接触する部位にコラーゲ
ン、キチン、フィブリン等の生体高分子を用いるもの、
あるいはゴム系の素材中に保湿成分を分散させ密着・非
癒着・高含水状態の確保などを図ったもの、さらには本
発明者らが以前提案した創傷部に接触する部位の少なく
とも一部が撥水性物質により被覆された生体適合性のヒ
ドロゲル形成性の支持層(例えば、カルボキシメチルセ
ルロース、アルギン酸塩系、ヒアルロン酸塩系、ポリ
(メタ)アクリル酸塩系)と、該支持層の創傷部に接触
する部位とは反対側に形成された水分透過調節層とから
なる創傷被覆材(特開昭62−183760号公報)等
があり、一定の成果をおさめている。
[0004] As an alternative, a dressing (Airstri) combining a sponge-like pad made of a moisture-absorbing pad and a non-adhesive film with a waterproof adhesive plaster is used.
p R, Smith & Nephew Limite
d) or an adhesive dressing (Op-Site) comprising a polyurethane film having high water vapor permeability and an adhesive layer.
R , Smith & Nephew Limited;
Bioclusive R , Johnson & Joh
nson; Tegaderm R 3M) and the like are commercially available. In addition, collagen, chitin, those using biopolymers such as fibrin at the site of contact with the wound of the coating material,
Alternatively, a moisturizing component is dispersed in a rubber-based material to ensure adhesion, non-adhesion, and high water content, and at least a portion of the site that comes into contact with the wound previously proposed by the present inventors is repelled. Contacting a biocompatible hydrogel-forming support layer (eg, carboxymethylcellulose, alginate-based, hyaluronate-based, poly (meth) acrylate-based) coated with an aqueous substance and in contact with a wound of the support layer There is a wound dressing (Japanese Patent Application Laid-Open No. 62-183760) comprising a moisture permeation control layer formed on the side opposite to the part to be treated, and has achieved certain results.

【0005】一方、dry dressingとして多
孔質高分子膜があるが、この場合dressingが創
面に固着してしまい剥す際に出血を伴う為、最近では創
面と接触する部位には非粘着性多孔フィルム(Melo
lin,Smith &Nephew Limite
d)を使用したドレッシングが市販されている。
On the other hand, as a dry dressing, there is a porous polymer membrane. In this case, since the dressing adheres to the wound surface and bleeds when peeled off, recently, a non-adhesive porous film ( Melo
lin R , Smith & Nephew Limit
Dressings using d) are commercially available.

【0006】また、Nathanらは、窒素ガスを用い
た噴霧器で、ポリエチレングリコールの液体を噴霧した
後に、ポリ−2−ハイドロキシメタクリレートの粉末を
散布して重合させ、膜を作成した(Burn,7,52
(1981))。しかし、この膜の安定化には、30〜
90分を要するのが欠点である。この材料は、熱傷患者
の潰瘍面への感染を防止する目的で作成され、疼痛の軽
減と密着性のよさで有効であった。
Further, Nathan et al. Sprayed a liquid of polyethylene glycol with a sprayer using nitrogen gas, and then sprayed and polymerized a powder of poly-2-hydroxymethacrylate to form a film (Burn, 7, 2). 52
(1981)). However, 30-
The disadvantage is that it takes 90 minutes. This material was created to prevent infection of the ulcer surface of burn patients, and was effective in reducing pain and improving adhesion.

【0007】[0007]

【発明が解決しようとする課題】上記従来の被覆材もあ
る程度の効果は有しているが、創傷部と接触する部分の
生体適合性を有する基材層の形成に用いられている材料
が、分解、脱落しやすく、創傷被覆材としての使用時に
おける物性に問題があり、さらにその分解、離脱物が異
物として認識されることがあり、創傷部の治癒を遅延さ
せる危険性があった。
Although the above-mentioned conventional dressing material has some effect, the material used for forming the biocompatible base material layer in the portion in contact with the wound is: There was a problem in physical properties when used as a wound dressing material, which was easily decomposed and dropped off, and the decomposition or detachment was sometimes recognized as a foreign substance, and there was a risk of delaying the healing of the wound.

【0008】そこで、本発明は創面への良好な密着性を
有し、創傷部と接触しても容易に分解,離脱することが
なく、創面の治癒に伴い、剥す際の出血を伴なわないで
容易に剥すことができる創傷被覆材を提供することを目
的とする。
Therefore, the present invention has good adhesion to the wound surface, does not easily disassemble and detach even when it comes into contact with the wound, and does not cause bleeding when peeling off as the wound heals. It is an object of the present invention to provide a wound dressing that can be easily peeled off.

【0009】[0009]

【課題を解決するための手段】上記の目的は下記の構成
を有する創傷被覆用ヒドロゲルによって達成される。
The above object is achieved by a wound dressing hydrogel having the following constitution.

【0010】(1)温度感応性を有するN−イソプロピ
ルアクリルアミドの単独もしくは共重合体またはジエチ
ルアクリルアミドの単独もしくは共重合体からなる創傷
被覆用ヒドロゲル。 (2)1項の創傷被覆用ヒドロゲルに生理活性物質を含
有させた創傷被覆用ヒドロゲル。 (3)1項の創傷被覆用ヒドロゲルに抗菌性を有する物
質を含有させた創傷被覆用ヒドロゲル。
(1) A wound-covering hydrogel comprising a homo- or copolymer of N-isopropylacrylamide or a homo- or copolymer of diethylacrylamide having temperature sensitivity. (2) A wound covering hydrogel comprising the wound covering hydrogel of item 1 containing a physiologically active substance. (3) A wound covering hydrogel comprising the wound covering hydrogel of item 1 containing a substance having antibacterial properties.

【0011】本発明で使用する温度感応性を有するN−
イソプロピルアクリルアミドの単独もしくは共重合体お
よびジエチルアクリルアミドの単独もしくは共重合体
は、一定温度以下に温度を下げることによって水に完全
に溶解する。すなわち、下限臨界溶解温度を示し、N−
イソプロピルアクリルアミド単独では温度が約32℃で
あり、共重合体物を選ぶことにより温度を上下に変える
ことができる。
[0011] The temperature-sensitive N- used in the present invention.
The homo- or copolymer of isopropyl acrylamide and the homo- or copolymer of diethyl acrylamide are completely dissolved in water by lowering the temperature below a certain temperature. That is, it indicates the lower critical melting temperature,
The temperature of isopropylacrylamide alone is about 32 ° C., and the temperature can be changed up and down by selecting a copolymer.

【0012】本発明の創傷被覆用ヒドロゲルは、創傷面
に適用して、一定期間載せた後剥離する場合に、環境温
度を変化させるだけで容易に剥がせるばかりではなく、
更に親水性,疎水性のバランスを容易にコントロールす
ることで、含有した生理活性物質の放出を制御すること
も可能である。
When the hydrogel for wound covering of the present invention is applied to a wound surface and peeled after being placed for a certain period of time, it can be easily peeled off only by changing the environmental temperature,
Further, by easily controlling the balance between hydrophilicity and hydrophobicity, it is possible to control the release of the contained physiologically active substance.

【0013】本発明で用いられる生理活性物質は、皮膚
細胞である表皮細胞と線維芽細胞の増殖を直接的または
間接的に促進しうるものであれば特に制限はなく、イン
シュリン、ハイドロコーチゾン、上皮細胞成長因子(E
GF)、線維芽細胞成長因子(FGF)、ウロガストロ
ン等が挙げられ、特に上皮細胞成長因子(EGF)、ウ
ロガストロンは好適に用いられる。
The physiologically active substance used in the present invention is not particularly limited as long as it can directly or indirectly promote the proliferation of skin cells, epidermal cells and fibroblasts. Insulin, hydrocortisone, epithelium, Cell growth factor (E
GF), fibroblast growth factor (FGF), urogastron, and the like. In particular, epidermal growth factor (EGF) and urogastron are preferably used.

【0014】上皮細胞成長因子(EGF)は、マウス顎
下腺より分離された上皮細胞の増殖を促進する因子であ
り、マウスEGF(mEGF)は、53個のアミノ酸か
らなるペプチドである。皮膚,舌,食道等の上皮組織の
細胞増殖と分化の促進などの作用を有している。
Epidermal growth factor (EGF) is a factor that promotes the growth of epithelial cells isolated from the mouse submandibular gland, and mouse EGF (mEGF) is a peptide consisting of 53 amino acids. It has an effect of promoting cell proliferation and differentiation of epithelial tissues such as skin, tongue, and esophagus.

【0015】ウロガストロンは、ヒト尿中より単離され
たヒト上皮細胞増殖因子のことであり、上記マウスEG
Fとは53個のアミノ酸のうち16個を異にする。ウロ
ガストロンは、胃液分泌抑制作用とともに細胞増殖作用
を有しており、創傷治療薬としての用途が期待されてい
る。
Urogastron is a human epidermal growth factor isolated from human urine,
It differs from F by 16 out of 53 amino acids. Urogastron has a cell proliferation action as well as a gastric secretion suppression action, and is expected to be used as a wound treatment drug.

【0016】また、インシュリン、ハイドロコーチゾン
等のホルモンは細胞に対する種々の効果、特に細胞増殖
効果が期待されている。なかでもハイドロコーチゾン
は、今や創傷治癒における炎症抑制に欠かせない薬物と
されている。
[0016] Hormones such as insulin and hydrocortisone are expected to have various effects on cells, especially cell growth effects. Among them, hydrocortisone is now regarded as an indispensable drug for suppressing inflammation in wound healing.

【0017】本発明で用いられる抗菌性を有する物質
は、スルファジアジン銀、ゲンタシン、硝酸銀、抗菌性
ゼオライトなどが選択され得るが、これらの物質に限定
されるものではない。
The antibacterial substance used in the present invention can be selected from silver sulfadiazine, gentacin, silver nitrate, antibacterial zeolite and the like, but is not limited to these substances.

【0018】本発明の創傷被覆用ゲルは例えば次のよう
にして製造される。まず、精製したN−イソプロピルア
クリルアミドの粉末を4ツ口フラスコに加え、溶媒と開
始剤を添加する。十分に窒素雰囲気にした後に、所定温
度(40℃以上)で一定時間反応させて重合すると得る
ことができる。
The wound dressing gel of the present invention is produced, for example, as follows. First, a powder of purified N-isopropylacrylamide is added to a four-necked flask, and a solvent and an initiator are added. After a sufficient nitrogen atmosphere, polymerization can be performed by reacting at a predetermined temperature (40 ° C. or higher) for a certain period of time.

【0019】得られたポリ−N−イソプロピルアクリル
アミドは水溶液中で約32℃に下限臨界温度を有するこ
とが知られている。例えば、下限臨界溶解温度である3
2℃以上ではポリ−N−イソプロピルアクリルアミドの
占有体積は少なくなり、ポリマー中の水分子を隣接する
ため、ゲル表面は疎水性を示し、逆に32℃以下ではポ
リ−N−イソプロピルアクリルアミドの占有体積は大き
くなるのでポリマー中の水分子の占める体積が上昇する
ため、ゲル表面は親水性を示すようになる。
It is known that the obtained poly-N-isopropylacrylamide has a lower critical temperature of about 32 ° C. in an aqueous solution. For example, the lower critical solution temperature of 3
At 2 ° C. or higher, the volume occupied by poly-N-isopropylacrylamide decreases, and the water surface in the polymer is adjacent to the gel, so that the gel surface shows hydrophobicity. Becomes larger, so that the volume occupied by water molecules in the polymer increases, so that the gel surface becomes hydrophilic.

【0020】また次の方法により得ることができる。5
%のポリ−N−イソプロピルアクリルアミド水溶液を3
2℃以下の環境下に維持したまま、生理活性物質の粉末
あるいは抗菌性の物質を分散させることによって得るこ
とができる。
Further, it can be obtained by the following method. 5
% Poly-N-isopropylacrylamide aqueous solution
It can be obtained by dispersing a physiologically active substance powder or an antibacterial substance while maintaining the environment at 2 ° C. or lower.

【0021】[0021]

【実施例】以下、実施例および実験例を示して本発明を
さらに具体的に説明する。
The present invention will be described more specifically below with reference to examples and experimental examples.

【0022】実施例1 創傷被覆用ヒドロゲルの作成 N−イソプロピルアクリルアミド(東京化成(株))は
トルエンに溶解させ、石油エーテルで再沈精製した。精
製したN−イソプロピルアクリルアミド20gをベンゼ
ン溶液30mlに溶解させ、開始剤アゾビスイソブチロニ
トリル0.08gを加えた。窒素気流下で反応温度60
℃、反応時間24時間撹拌して重合した。この重合物を
THFに溶解させ、エチルエーテルで再沈した。上記の
再沈精製操作を2回繰り返した。更に、室温中で72時
間、真空乾燥することにより目的物16gを得ることが
できた。
Example 1 Preparation of Hydrogel for Wound Dressing N-isopropylacrylamide (Tokyo Kasei Co., Ltd.) was dissolved in toluene and purified by reprecipitation with petroleum ether. 20 g of purified N-isopropylacrylamide was dissolved in 30 ml of a benzene solution, and 0.08 g of azobisisobutyronitrile initiator was added. Reaction temperature 60 under nitrogen stream
C., and the reaction was stirred for 24 hours to polymerize. This polymer was dissolved in THF and reprecipitated with ethyl ether. The above reprecipitation / purification operation was repeated twice. Furthermore, 16 g of the target product could be obtained by vacuum drying at room temperature for 72 hours.

【0023】実施例2 創傷被覆用ヒドロゲルの作成 N−イソプロピルアクリルアミド16gとエチルアクリ
レート4gをジメチルスルホキシド(DMSO)溶液3
0mlに溶解させ、開始剤過酸化オクタン酸t−ブチル
(BPO)0.19gを加えた。窒素気流下で反応温度
60℃、反応時間24時間撹拌して重合した。上記の再
沈精製操作を2回繰り返した。更に室温中で72時間、
真空乾燥することにより目的物15gを得ることができ
た。この材料の下限臨界溶解温度は約35℃であった。
Example 2 Preparation of wound covering hydrogel 16 g of N-isopropylacrylamide and 4 g of ethyl acrylate were dissolved in dimethyl sulfoxide (DMSO) solution 3.
It was dissolved in 0 ml and 0.19 g of initiator t-butyl peroxide octanoate (BPO) was added. The polymerization was carried out by stirring at a reaction temperature of 60 ° C. for a reaction time of 24 hours under a nitrogen stream. The above reprecipitation / purification operation was repeated twice. 72 hours at room temperature,
By vacuum drying, 15 g of the desired product could be obtained. The lower critical melting temperature of this material was about 35 ° C.

【0024】実施例3 創傷被覆用ヒドロゲルの作成 N−イソプロピルアクリルアミド16gとメトキシエチ
ルアクリレート4gをジメチルスルホキシド(DMS
O)溶液30mlに溶解させ、開始剤過酸化オクタン酸t
−ブチル(BPO)0.19gを加えた。窒素気流下で
反応温度60℃、反応時間24時間撹拌して重合した。
上記の再沈精製操作を2回繰り返した。更に室温中で7
2時間、真空乾燥することにより目的物15gを得るこ
とができた。この材料の下限臨界溶解温度は約36℃で
あった。
Example 3 Preparation of Wound Coating Hydrogel 16 g of N-isopropylacrylamide and 4 g of methoxyethyl acrylate were added to dimethyl sulfoxide (DMS).
O) Dissolve in 30 ml of solution and add initiator octanoic acid peroxide t
0.19 g of -butyl (BPO) was added. The polymerization was carried out by stirring at a reaction temperature of 60 ° C. for a reaction time of 24 hours under a nitrogen stream.
The above reprecipitation / purification operation was repeated twice. 7 at room temperature
By vacuum drying for 2 hours, 15 g of the target product could be obtained. The lower critical melting temperature of this material was about 36 ° C.

【0025】実施例4 創傷被覆用ヒドロゲルの作成 上記実施例1〜3で得られた5%の創傷被覆用ヒドロゲ
ル50mlを30℃以下で撹拌しながら、ウロガストロン
の粉末1mgを添加した後、十分に撹拌することにより得
られた。
Example 4 Preparation of Hydrogel for Wound Dressing 1 mg of urogastron powder was added while stirring 50 ml of the 5% wound hydrogel obtained in Examples 1 to 3 at 30 ° C. or less. Obtained by stirring.

【0026】実施例5 創傷被覆用ヒドロゲルの作成 上記実施例1〜3で得られた5%の創傷被覆用ヒドロゲ
ル50mlを30℃以下で撹拌しながら、スルファジアジ
ン銀の粉末500mgを添加した後、十分に撹拌すること
により得られた。
Example 5 Preparation of Hydrogel for Wound Dressing While stirring 50 ml of the 5% hydrogel for wound coating obtained in Examples 1 to 3 at 30 ° C. or lower, 500 mg of silver sulfadiazine powder was added thereto. By stirring.

【0027】実験例(動物実験) 創傷被覆用ヒドロゲルのラット皮膚欠損創への適用 上記1〜2で得られたヒドロゲルをラットの背部皮膚に
塗布して試験した。Wistar−KYラット(200
〜400g)をネンブタール麻酔下で除毛し、イソジン
消毒したラット背後皮膚にデルマトームで12/100
0(インチ)の皮膚を剥離して欠損創を作製し、止血、
乾燥した後、ヒドロゲルを塗布した。その上にソルフレ
ン(テルモ製)を4枚重ね、更にエラスチコン等の伸縮
性絆創膏で胴巻にし圧迫固定した。塗布後3日目でヒド
ロゲルを塗布した創面ではすでに表皮化が完了してい
た。
Experimental Example (Animal Experiment) Application of Hydrogel for Wound Coverage to Rat Skin Defect Wound The hydrogel obtained in the above 1-2 was applied to rat back skin and tested. Wistar-KY rat (200
400400 g) was removed under Nembutal anesthesia and dermatome was applied to the skin behind the rat, which had been sterilized with isodine, using a dermatome.
0 (inch) skin is peeled to create a defect wound, hemostasis,
After drying, the hydrogel was applied. Four sheets of Solfrene (manufactured by Terumo) were stacked on top of it, and the body was wound with an elastic bandage such as Elasticon and pressed and fixed. On the 3rd day after the application, the wound surface to which the hydrogel was applied had already completed epidermalization.

【0028】[0028]

【発明の効果】本発明の創傷被覆用ヒドロゲルは、熱
傷、採皮創および皮膚剥削創、外傷性皮膚欠損創等の疾
患ないし創傷による患部に直ちに適用することができ、
疼痛を抑えるばかりではなく、密着性に優れており、更
に創傷面の治癒に伴って剥す際にも、ゲルを冷すだけで
容易に剥すことができる。
Industrial Applicability The hydrogel for covering a wound of the present invention can be immediately applied to diseases such as burns, excisional wounds and skin abrasions, and traumatic skin defect wounds, or affected areas caused by wounds.
Not only does it reduce pain, it also has excellent adhesion, and can be easily peeled off just by cooling the gel when peeling off as the wound surface heals.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 大西 誠人 神奈川県足柄上郡中井町井ノ口1500番地 テルモ株式会社内 (72)発明者 志村 賢一 神奈川県足柄上郡中井町井ノ口1500番地 テルモ株式会社内 (56)参考文献 特開 昭61−55180(JP,A) 特開 平4−1202(JP,A) (58)調査した分野(Int.Cl.7,DB名) A61L 15/00 - 15/04 C08F 20/52 - 20/56 C08F 120/52 - 120/56 C08F 220/52 - 220/56 C08L 33/24 - 33/26 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masato Onishi 1500 Inokachi, Nakai-machi, Ashigara-gun, Kanagawa Prefecture Inside Terumo Corporation JP-A-61-55180 (JP, A) JP-A-4-1202 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) A61L 15/00-15/04 C08F 20/52 -20/56 C08F 120/52-120/56 C08F 220/52-220/56 C08L 33/24-33/26

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 温度感応性を有するN−イソプロピルア
クリルアミドの単独もしくは共重合体またはジエチルア
クリルアミドの単独もしくは共重合体からなる創傷被覆
用ヒドロゲル。
1. A wound-covering hydrogel comprising a homo- or copolymer of N-isopropylacrylamide or a homo- or copolymer of diethylacrylamide having temperature sensitivity.
【請求項2】 請求項1の創傷被覆用ヒドロゲルに生理
活性物質を含有させた創傷被覆用ヒドロゲル。
2. A wound covering hydrogel comprising the wound covering hydrogel of claim 1 containing a physiologically active substance.
【請求項3】 請求項1の創傷被覆用ヒドロゲルに抗菌
性を有する物質を含有させた創傷被覆用ヒドロゲル。
3. A wound dressing hydrogel comprising the wound dressing hydrogel of claim 1 containing an antibacterial substance.
JP3271823A 1991-09-25 1991-09-25 Hydrogel for wound dressing Expired - Lifetime JP3026316B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3271823A JP3026316B2 (en) 1991-09-25 1991-09-25 Hydrogel for wound dressing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3271823A JP3026316B2 (en) 1991-09-25 1991-09-25 Hydrogel for wound dressing

Publications (2)

Publication Number Publication Date
JPH0584290A JPH0584290A (en) 1993-04-06
JP3026316B2 true JP3026316B2 (en) 2000-03-27

Family

ID=17505352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3271823A Expired - Lifetime JP3026316B2 (en) 1991-09-25 1991-09-25 Hydrogel for wound dressing

Country Status (1)

Country Link
JP (1) JP3026316B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1328539C (en) * 2005-07-01 2007-07-25 煤炭科学研究总院北京煤化工研究分院 Medium and small sized industrial pulverized-coal fired boiler

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Publication number Priority date Publication date Assignee Title
WO2001070022A1 (en) * 2000-03-21 2001-09-27 Yuichi Mori Coating materials for biological tissues, coated biological tissues and method of coating biological tissues
GB2369572A (en) 2000-11-29 2002-06-05 Raft Trustees Ltd Wound treatment composition comprising insulin
US10912868B2 (en) 2016-08-31 2021-02-09 Toray Industries, Inc. Medical material, medical separation membrane, and blood purifier
JP6737194B2 (en) * 2017-01-30 2020-08-05 東洋インキScホールディングス株式会社 Wound dressing gel and method for producing the same
CN115006588B (en) * 2022-08-04 2022-11-29 中国科学院过程工程研究所 Hydrogel dressing formed by body temperature initiation and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1328539C (en) * 2005-07-01 2007-07-25 煤炭科学研究总院北京煤化工研究分院 Medium and small sized industrial pulverized-coal fired boiler

Also Published As

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