JP4932498B2 - 創傷用多層包帯 - Google Patents
創傷用多層包帯 Download PDFInfo
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- JP4932498B2 JP4932498B2 JP2006552691A JP2006552691A JP4932498B2 JP 4932498 B2 JP4932498 B2 JP 4932498B2 JP 2006552691 A JP2006552691 A JP 2006552691A JP 2006552691 A JP2006552691 A JP 2006552691A JP 4932498 B2 JP4932498 B2 JP 4932498B2
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- 206010052428 Wound Diseases 0.000 claims abstract description 182
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Images
Classifications
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- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive bandages or dressings
- A61F13/0203—Adhesive bandages or dressings with fluid retention members
- A61F13/022—Adhesive bandages or dressings with fluid retention members having more than one layer with different fluid retention characteristics
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Description
さらに公知の包帯、特にALLEVYN(登録商標)などのフォーム包帯の欠点は、たとえば圧縮バンデージシステム(compression bandage system)下で、使用中に包帯に圧力が加わると、包帯によって吸収される滲出液は包帯からしぼり出されることが少なくないことである。さらに、包帯の滲出液を吸収する能力は、いったん圧縮されると、減少する。従って、このような包帯は、圧縮を必要あるいは体験する場合の創傷への使用は適切ではない。
高MVTRを有する透過層、
滲出液を吸収し、保持しうる吸収心材、
滲出液を吸収心材に伝送する創傷接触層、および
包帯中の滲出液の創傷領域への横広がりを制限する吸収心材および創傷接触層
から成ることを特徴とする創傷用多層包帯が提供される。
(a)高MVTRを有する透過層;
(b)接着剤;
(c)高吸収性および低い横吸上作用を有する吸収心材;および
(d)創傷接触層
から成ることを特徴とする創傷用多層包帯が提供される。
透過層は接着剤の上に重なり、接着剤は吸収心材の上に重なり、次いで吸収心材は創傷接触層の上に重なることが好ましい。
創傷接触層は好ましくは、非粘着性で滲出液を吸収心材へ伝送するように形成されている。創傷接触層は好ましくは、創傷面に湿った環境を作り、該環境は創傷治癒を導き、かつ創傷乾燥の危険を縮小する。さらに、創傷接触層の吸収特性は、典型例としてバンデージもしくは等価の圧縮部材によって加えられる圧縮下でそれほど低下しないことが好ましい。バンデージは、約40mmHgの圧力を加えるように配置されてよい。
創傷接触層は好ましくは、包帯に構造保全性を付与し、かつ吸収心材を物理的に圧迫する。使用中、創傷接触層はゲル化吸収層を物理的に圧迫するのを助けることができ、さもなければ、包帯を離層し、スライドさせる傾向を有するかもしれない。
吸収心材の好ましい横吸上作用は低く、好ましくは20mm/分である。好ましくは1〜15mm/分、より好ましくは1〜10mm/分である。
本発明での使用に好適な繊維は、通常の繊維機械を用い、たとえば切断、カーディングおよびニードリング(needling)、および要すればクリンプ加工、延伸および紡績を含むステープルルートで加工することができる。
存在する場合の接着剤は、包帯の各層を共に保持するのに役立ち、かつ好ましい粘着性包帯の実施態様において、包帯を皮膚に密着させるのに使用されてよい。接着剤組成物は好ましくは、EP−B−92999に記載されているような、水溶性ハイドロコロイドの1種以上と低分子量ポリイソブチレンの1種以上の均質ブレンドからなる。
本発明の透過層は好ましくは、1993 BP Appendix XX J1 に記載の方法で測定した、少なくとも300gm2/24時間または100〜1000gm2/24時間範囲のMVTRを有する層である。透過層は、フィルム/フォーム積層体、たとえば発泡ポリウレタンフォームがポリウレタンフォームに積層した形状にあってよい。
好ましくは透過層は、患者が入浴またはシャワーを浴びている間、創傷を湿らすことなく包帯の着用を可能ならしめる。
透過層は好ましくは、バクテリヤ、ウィルスおよび外的汚染菌に対するバリヤーであって、これによって、創傷を感染から保護する。
また該包帯は、流体広げ層(spreading layer)を含有してもよい。流体広げ層の役割は、包帯によって吸収される流体を、高MVTR透過層を横切って横に広げることである。この層は、吸収心材の創傷に面しない側に設置されてよい。流体広げ層は、100%のビスコース、ポリオレフィン型繊維またはビスコース/ポリエステルブレンドで構成されてよい。より好ましい流体広げ層は、ビスコース/ポリエステルの水を巻き込む不織布層である。
包帯の総厚みは好ましくは2〜4mmで、より好ましくは2.2〜3.7mmである。これは、包帯の使用中の適合性や選択の自由性を高める。
図1は、創傷用多層包帯の非粘着性の具体例の概略図である。
図2は、図1の包帯の概略横断面図である。
図3は、創傷用多層包帯の粘着性の具体例の概略図である。
図4は、図3の包帯の概略横断面図である。
図6は、本発明に係る創傷用多層包帯であって、接着剤層と吸収心材の間に追加の定着層を含有する図2の包帯の概略横断面図である。
図7は、本発明に係る創傷用多層包帯であって、創傷接触層と吸収心材の間および吸収心材と接着剤層の間に追加の定着層を含有する図2の包帯の概略横断面図である。
図8は、追加の流体広げ層を含有する図5の包帯の概略横断面図である。
図10は、本発明に係る創傷用多層包帯であって、創傷接触層と吸収心材の間に追加の定着層を含有する図4の包帯の概略横断面図である。
図11は、本発明に係る創傷用多層包帯であって、吸収心材と接着剤層の間に追加の定着層を含有する図4の包帯の概略横断面図である。
図12は、本発明に係る創傷用多層包帯であって、創傷接触層と吸収心材の間および吸収心材と接着剤層の間に追加の定着層を含有する図4の包帯の概略横断面図である。
図14は、追加の流体広げ層を含有する図12の包帯の概略横断面図である。
図15は、追加の接着剤層を含有する図9の包帯の概略横断面図である。
図16は、追加の接着剤層を含有する図14の包帯の概略横断面図である。
創傷接触層は、ゲル形成繊維からなる、35gm2の水を巻き込む不織布から作られる。
透過層は、ポリウレタンフォーム/フィルム積層体である。
本発明に係る創傷用包帯は、公知の包帯に比し、圧縮下でも高い流体取扱能力を有する。典型的な圧縮は、約40mmHgで適用される。
かかる包帯で用いる材料や、該包帯の厚みは、他の公知包帯に比し、包帯の使用中の適合性や選択の自由性を高める。
比較実験から、本発明の粘着性および非粘着性バージョンは、重要な利点を有することが証明された。
2:透過層
3:中央領域
4:接着剤層
6:吸収心材
8:創傷接触層
9:定着層
9’:定着層
10:流体広げ層
14:接着剤層
15:周囲リム
16:吸収心材
18:創傷接触層
19:定着層
19’:定着層
20:流体広げ層
21:接着剤層
Claims (29)
- 多量の滲出液をもたらす創傷に用いる創傷用多層包帯であって、
少なくとも300gm2/24時間の透湿度(MVTR)を有する透過層、
滲出液を吸収し、保持しうる、ゲル形成繊維を備えている吸収心材、
滲出液を吸収心材に伝送するゲル形成繊維を備えている創傷接触層、および
吸収心材上に設置する定着層を備えており、
吸収心材および創傷接触層は、包帯中の滲出液の創傷領域への横広がりを制限する、ことを特徴とする創傷用多層包帯。 - 包帯10cm2当り少なくとも6gの流体を24時間以内で取扱うことができる請求項1に記載の創傷用多層包帯。
- 包帯10cm2当り8〜15gの流体を24時間以内で取扱うことができる請求項1又は2に記載の創傷用多層包帯。
- 包帯が粘着性である請求項1乃至3のいずれか1に記載の創傷用多層包帯。
- 包帯が非粘着性である請求項1乃至4のいずれか1に記載の創傷用多層包帯。
- ゲル形成繊維が、織物形状の化学変性セルロース系繊維である請求項1に記載の創傷用多層包帯。
- 繊維が、カルボキシメチル化セルロース繊維である請求項1に記載の創傷用多層包帯。
- 創傷接触層が、5〜40mm/分の低い横吸上速度を有する請求項1乃至7のいずれか1に記載の創傷用多層包帯。
- 創傷接触層が、25〜55gm2の繊維密度を有する請求項1乃至8のいずれか1に記載の創傷用多層包帯。
- 創傷接触層が、35gm2の繊維密度を有する請求項9に記載の創傷用多層包帯。
- 吸収心材が、少なくとも10g/gの高い滲出液吸収性を有する請求項1乃至10のいずれか1に記載の創傷用多層包帯。
- 吸収心材が、20mm/分以下の低い横吸上速度を有する請求項1乃至11のいずれか1に記載の創傷用多層包帯。
- ゲル形成繊維が好ましくは、カルボキシメチルセルロース・ナトリウム繊維である請求項1に記載の創傷用多層包帯。
- 吸収心材が、ゲル形成繊維とセルロース系繊維のブレンドである請求項1乃至13のいずれか1に記載の創傷用多層包帯。
- 吸収心材が、25重量%以下のセルロース系繊維と75〜100重量%のゲル形成繊維のブレンドである請求項14に記載の創傷用多層包帯。
- ブレンドが、50重量%以下のセルロース系繊維と50〜100重量%のゲル形成繊維である請求項14に記載の創傷用多層包帯。
- ブレンドが、約50重量%のセルロース系繊維と約50重量%のゲル形成繊維である請求項14に記載の創傷用多層包帯。
- 吸収心材の繊維密度が、150〜250gm2である請求項1乃至17のいずれか1に記載の創傷用多層包帯。
- 繊維密度が、200gm2である請求項18に記載の創傷用多層包帯。
- 包帯が湿ったときの収縮率が、25%以下である請求項1乃至19のいずれか1に記載の創傷用多層包帯。
- 収縮率が15%以下である請求項1乃至20のいずれか1に記載の創傷用多層包帯。
- 透過層がフォームである請求項1乃至21のいずれか1に記載の創傷用多層包帯。
- 透過層が、ポリウレタンフィルムに積層したポリウレタンフォームである請求項1乃至22のいずれか1に記載の創傷用多層包帯。
- 薬物を添加した可溶性フィルム層、臭気吸収層、流体広げ層、定着層および追加の接着剤層からなる群から選ばれる1つ以上の層を含有する請求項1乃至23のいずれか1に記載の創傷用多層包帯。
- 厚みが2〜4mmである請求項1乃至24のいずれか1に記載の創傷用多層包帯。
- 定着層が、吸収心材を隣接層に結合させる請求項1乃至25のいずれか1に記載の創傷用多層包帯。
- 定着層が、吸収心材の創傷に面する側または吸収心材の創傷に面しない側に設置されている請求項1乃至26のいずれか1に記載の創傷用多層包帯。
- 吸収心材と創傷接触層の間に定着層が設置されている請求項1乃至27のいずれか1に記載の創傷用多層包帯。
- 定着層がポリアミドウェブである請求項1乃至28のいずれか1に記載の創傷用多層包帯。
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GBGB0405769.1A GB0405769D0 (en) | 2004-03-15 | 2004-03-15 | Multi layered wound dressing |
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GB2429161B (en) | 2008-12-24 |
WO2005079718A1 (en) | 2005-09-01 |
CA2556151A1 (en) | 2005-09-01 |
AU2005215212A1 (en) | 2005-09-01 |
GB2429161A (en) | 2007-02-21 |
AU2005215212B2 (en) | 2010-11-25 |
DK1718257T3 (da) | 2010-10-18 |
PT1718257E (pt) | 2010-10-21 |
EP1718257A1 (en) | 2006-11-08 |
CA2556151C (en) | 2013-07-02 |
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