JP2010518888A - 親水性創傷接触層を有する多層式吸収性創傷被覆材 - Google Patents
親水性創傷接触層を有する多層式吸収性創傷被覆材 Download PDFInfo
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- JP2010518888A JP2010518888A JP2009535590A JP2009535590A JP2010518888A JP 2010518888 A JP2010518888 A JP 2010518888A JP 2009535590 A JP2009535590 A JP 2009535590A JP 2009535590 A JP2009535590 A JP 2009535590A JP 2010518888 A JP2010518888 A JP 2010518888A
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Abstract
Description
−単位面積重量:試料の単位面積重量g/m2
−液体吸収率:テスト3に基づく液体吸収率(テスト方法参照)
−MVTR:テスト4に基づく水蒸気透過率(テスト方法参照)。
A)テスト方法:
1)AFERA5001に準拠したスチールに対する粘着力(90°剥離角)−テスト1
被検見本品はテスト前に24時間にわたって標準大気(23℃、50%相対湿度)で貯蔵され、その後に、それぞれ幅25mm、長さ100mmの3試料が取出される。被検体は手で、慎重に、引っぱらないようにして、スチール板(DIN EN 1939に準拠)上に貼り付けられるが、その際、気泡が生じないように注意する。見本品の上側非粘着面には、フォームの伸びが生じないように、一般市販の不伸強化接着テープ(たとえばTesa4104)が被着される。被検体は、英国、Surrey、Sondes Place Research Institute社のテープアプリケータD427/1を用いて20N/cmで転動加圧される。こうして用意されたスチール板はドイツ、Ulm、Zwick−Roell社の引張り伸び機Z−005の90°剥離装置に装入され、見本品上方に突き出した強化接着テープの自由端が上側クランプに装着される。300mm/minの定剥離速度にて見本品をスチール板から剥がすのに要される力の推移が測定される。粘着力の算定はDIN53 539(方式C)に準拠した適切なPCプログラムによって行われる。
被検見本品はテスト前に24時間にわたって標準大気(23℃、50%相対湿度)で貯蔵され、その後に、それぞれ幅25mm、長さ100mmの3試料が取出される。被検体は手で、慎重に、引っぱらないようにして、(英国、Bedfordshire、Scapa Medical社から取寄せられた)粗面化されたスチール板上に貼り付けられるが、その際、気泡が生じないように注意する。見本品の上側非粘着面には、フォームの伸びが生じないように、一般市販の不伸強化接着テープ(たとえばTesa4104)が被着される。被検体は重さ3kgの転動器を用いて約1cm/sの速度で手動にて転動加圧される。こうして準備されたスチール板はドイツ、Ulm、Zwick−Roell社の引張り伸ばし機Z−005の180°剥離装置に装入され、見本品上方に突き出した強化接着テープの自由端が上側クランプに装着される。300mm/minの定剥離速度にて力の推移が測定される。粘着力の算定はDIN ISO 6133(方式C)に準拠した適切なPCプログラムによって行われる。
生理的塩化ナトリウム水溶液(0.9重量%のNaClを水中に溶解)の自由吸収率がDIN EN 13726−1(2002)に準拠して測定される。DIN EN 13726−1(2002)との唯一の相違は、NaClおよびCaCl2水溶液に代えて、NaCl水溶液が使用されることであり、この場合、以下が当てはまる:
液体吸収率=(M2−M1)/M1[g/g] (1)
M2=試料の湿重量(g)
M1=試料の乾燥重量(g)
水蒸気透過率がDIN EN 13726−2(2002)に依拠して測定される。液体の流出が生じないように試験器の開口全体を覆ってしっかり留めることができる円板状の試料が創傷被覆材から切り取られる。試料は、創傷接触層が発生する水蒸気と直接接触するようにして、試験機に固定される。この円筒にはあらかじめ20mlの蒸留水が満たされている。次いで、この円筒は、37℃、相対湿度<20%に温湿度調節された気候条件に24hにわたって曝露される。このテスト時間の経過後に、重量差測定が行われる。
MVTR=[(M1−M2)・10000)]/A[g/m224h] (2)
MVTR=moisture vapor transition rate=水蒸気透過率
M1=初期重量(g)
M2=最終重量(g)
A=試験容器の円筒孔面積(cm2)
測定は、創傷接触層が水柱と直接接触するように試験器がひっくり返して使用される点を唯一の相違として、測定4aに準じて行われる。
最大液体吸収能(max.Fl.)は、テスト4aに基づく水蒸気透過率、試料の単位面積重量g/m2ならびにテスト3に基づく液体吸収率から結果する合成値を表している。この場合、テスト3に基づく自由吸収率は24hの自由吸収率に等置される。この合成値は実際に使用される材料ならびに寸法を顧慮した創傷被覆材の吸収力を表している。最大液体吸収能は以下のようにして算定される:
max.Fl.=(単位面積重量×液体吸収率)+MVTR[g/m224h] (3)
接触角測定は、ドイツ、Rudolstadt、東チューリンゲン・繊維/プラスチック材料検査mbH社[das Ostthuringische Materialprufgesell−schaft fur Textil und Kunststoffe mbH]によって実施された。接触角の測定は、ドイツ、Hamburg、Kruess社の検査機DSA100を用い、DIN EN 828に依拠して行われるが、この場合、テスト液として脱イオン水が使用される。接触角の検査のため、エラストマーが一般市販のポリウレタン膜(VP−940−2、ドイツ、Buxtehude、Collano社)上に全面にわたって被着される。この場合、脱イオン水がエラストマー上に載置される。
この検査はインビトロ・フィブリン層からの創傷被覆材の剥離性の良否判定に使用される。以下の試薬が必要とされる:
i)PBS緩衝液、pH7.4、ドイツ、Steinheim、Sigma−Aldrich社、製品No.P−5368。袋の中身はメスフラスコ中で脱イオン水に溶解されて1000mlとされる。
ii)ウシ血漿由来のトロンビン、50NIH−U/mg、ドイツ、Darmstadt、Merck社、製品No.112374。トロンビン10mgが秤量されてPP製の遠心分離管に入れられ、37℃にサーモスタット調温されたPBS緩衝液10mlでVortex振動器にて溶解される。1容のトロンビン溶液が9容のPBS緩衝液で稀釈される(=5NIH−U/ml)。この混合液はその都度のテスト用に新たに調製されなければならない。
iii)フィブリノゲン250mg(ヒト血漿由来(95%凝固タンパク質)、Sigma−Aldrich社、製品No.F−4883)が秤量されてPP製の大型遠心分離管に入れられ、37℃にサーモスタット調温されたPBS緩衝液でVortex振動器にて溶解される。フィブリノゲン溶液の実際の必要量は試験品の数に合わされなければならない。この溶液は室温にて48hにわたって安定である。
インビトロ・テストにより、寒天表面に形成されたフィブリン網と創傷被覆材との付着傾向が検査される。以下の試薬が必要とされる:
i)寒天、製品No.1.01614、Merck社。
ii)DRK供血サービスから得られるヒト血漿、小分けされて−18℃にて凍結。
iii)アクチンFS、製品No.B4218−20またはB4218−100、ドイツ、Eschborn、DADE BEHRING社。
iv)塩化カルシウム溶液25mM:3.67gの塩化カルシウム二水和物が脱イオン水に溶解されて1000mlとされる。
ピペットにて寒天板上に下記物質が下記順序で移される。
1.750μlの塩化カルシウム溶液25mM
2.1500μlのヒト血漿
3.750μlのアクチンFS
a)フィブリン網が損傷されていないかまたは
b)フィブリン網がほとんど欠損箇所を有していないかもしくはごくわずかな欠損箇所を有しているにすぎなければ、
創傷被覆材は創傷付着性を有していないと称される。
これに対して、
a)創傷被覆材を取り去る際にフィブリン網がちぎられるかまたは損傷されるか、あるいは
b)フィブリン網内に創傷被覆材の残滓が残っているかすれば、
創傷被覆材は創傷付着性を有すると評価される。
創傷接触層として粘着性ポリウレタンエラストマー1(スイス、Sempach−Station、Collano社)が使用された。この粘着剤はポリエーテルポリオール成分(A)と脂環式イソシアネート成分(B)とからなっている。100gの成分Aが37gの成分Bと混合された。この混合物がシリコン処理紙、ドイツ、Nidderau、Maria Soell社のSeparacon9120−60に、約200μmの層厚さで全面にわたって被着された。上記双方の成分間の反応が進行する短時間の経過後に粘性はますます高まる。これに続いて、こうして生成されたポリウレタン層に、ドイツ、Heidenheim、Paul Hartmann AG社のPermaFoam(厚さ約5mm、製品No.409401)が貼り合わせられた。続いて、寸法10×10cmの大きさの創傷被覆材が打抜かれた。したがって、この創傷被覆材の構造は図1に概略的に示した構造に一致している。
ポリウレタンエラストマー1が、ドイツ、Buxtehude、Collano−Xiro社のポリウレタン膜(VP940−2)上に被着重量200g/m2にてコートされた。この積層体はポリウレタンエラストマーの自由吸収率ならびに接触角を測定するために作製された。自由吸収率を決定するため、ポリウレタン膜の重量が差し引かれた。自由吸収率の測定はテスト3に準拠して行われた。テストは早くとも積層体の作製3日後に実施される。
ポリウレタンエラストマー2がPUキャリア膜(ポリウレタン膜VP940−2、ドイツ、Buxtehude、Collano−Xiro社)上に被着重量60g/m2にてコートされた。この積層体は、ポリウレタンエラストマーの自由吸収率ならびに接触角を測定するために作製された。自由吸収率を決定するため、ポリウレタン膜の重量が差し引かれた。自由吸収率の測定はテスト3に準拠して行われる。テストは早くとも積層体の作製3日後に実施される。
Claims (17)
- キャリア層(13、23、33、43、53、63)と、吸収層(12、22、32、42、52、62)と、親水性創傷接触層(11、21、31、41、51、61)とを含み、前記創傷接触層は前記吸収層と結合されかつ親水性ポリウレタンエラストマーからなる、多層式創傷被覆材(10、20、30、40、50、60)。
- 前記吸収層(12、32)は前記創傷接触層(11、31)と一体に結合されていることを特徴とする請求項1記載の創傷被覆材(10、30)。
- 前記エラストマーは粘着性ポリウレタンエラストマーまたはポリウレタンエラストマー粘着剤であることを特徴とする請求項1または2記載の創傷被覆材(20、40、60)。
- 前記ポリウレタンエラストマーは、含水量が4重量%未満のポリウレタン粘着剤であることを特徴とする請求項1または2記載の創傷被覆材(20、40、60)。
- 前記創傷接触層は、脂肪族および/または脂環式イソシアネート成分の少なくとも1種とポリエーテルポリオール成分との重合によって得られるポリウレタンエラストマーを含むことを特徴とする請求項1〜4のいずれか1項記載の創傷被覆材(10、20、30、40、50、60)。
- 前記創傷接触層は、イソホロンジイソシアネートまたは改質されたイソホロンジイソシアネートと、少なくとも1種のジオールまたはポリオール成分、好ましくは2、3、4、5または6個のヒドロキシル基を有し、OH数20〜112かつエチレンオキシド(EO)含有量が10重量%以上、好ましくは10〜40重量%、特に好ましくは10〜20重量%のポリエーテルポリオールと、の重合によって得られるポリウレタンエラストマー、特にポリウレタンエラストマー粘着剤を含むことを特徴とする請求項1〜5のいずれか1項記載の創傷被覆材(10、20、30、40、50、60)。
- 前記創傷接触層(21、41、61)は、0.02〜5N/25mmの粘着力を有することを特徴とする請求項1〜6のいずれか1項記載の創傷被覆材(20、40、60)。
- 前記創傷接触層(51)は、不連続的な創傷接触層であることを特徴とする請求項1〜7のいずれか1項記載の創傷被覆材(50)。
- 前記吸収層は、親水性ポリマーフォーム、吸収性フリースまたは不織布、少なくとも1種のハイドロコロイドを含んだポリマーマトリクス、凍結乾燥フォームまたはこれらの組み合わせを含むことを特徴とする請求項1〜8のいずれか1項記載の創傷被覆材(10、20、30、40、50、60)。
- 前記吸収層は、親水性ポリウレタンフォームを含むことを特徴とする請求項1〜9のいずれか1項記載の創傷被覆材(10、20、30、40、50、60)。
- 少なくとも5000g/m2/24hの最大液体吸収能を有することを特徴とする請求項1〜10のいずれか1項記載の創傷被覆材(10、20、30、40、50、60)。
- 前記キャリア層(13、23、33、43、53、63)は、ポリウレタンフォームまたはポリウレタン膜からなることを特徴とする請求項1〜11のいずれか1項記載の創傷被覆材(10、20、30、40、50、60)。
- 前記キャリア層(13、23、33、43、53、63)と前記吸収層とは、2種の異なるポリウレタンフォームからなる積層体として一体に形成されていることを特徴とする請求項1〜12のいずれか1項記載の創傷被覆材(10、20、30、40、50、60)。
- 前記吸収層は、前記創傷接触層よりも高い自由吸収率を有することを特徴とする請求項1〜13のいずれか1項記載の創傷被覆材(10、20、30、40、50、60)。
- 前記親水性創傷接触層(61)は、さらに1以上の抗菌材(68)を含むことを特徴とする請求項1〜14のいずれか1項記載の創傷被覆材(60)。
- さらに1以上の分配層(36)を含むことを特徴とする請求項1〜15のいずれか1項記載の創傷被覆材(30)。
- 親水性ポリウレタンエラストマーを含む親水性創傷接触層の、創傷、特に慢性創傷における組織回復の能動的および/または受動的支援手段を製造するための使用。
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EP06023099A EP1923077B1 (de) | 2006-11-07 | 2006-11-07 | Mehrschichtige, absorbierende Wundauflage mit einer hydrophilen Wundkontaktschicht |
PCT/EP2007/009119 WO2008055586A1 (de) | 2006-11-07 | 2007-10-20 | Mehrschichtige, absorbierende wundauflage mit einer hydrophilen wundkontaktschicht |
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CN (1) | CN101547709B (ja) |
AT (1) | ATE494914T1 (ja) |
DE (1) | DE502006008725D1 (ja) |
ES (1) | ES2361025T3 (ja) |
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- 2006-11-07 DE DE502006008725T patent/DE502006008725D1/de active Active
- 2006-11-07 EP EP06023099A patent/EP1923077B1/de not_active Revoked
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2007
- 2007-10-20 RU RU2009119046/15A patent/RU2445947C2/ru not_active IP Right Cessation
- 2007-10-20 EP EP07819184A patent/EP2091581A1/de not_active Withdrawn
- 2007-10-20 JP JP2009535590A patent/JP2010518888A/ja active Pending
- 2007-10-20 CN CN200780041520.5A patent/CN101547709B/zh not_active Expired - Fee Related
- 2007-10-20 WO PCT/EP2007/009119 patent/WO2008055586A1/de active Application Filing
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JP2011526220A (ja) * | 2008-07-04 | 2011-10-06 | バイエル・マテリアルサイエンス・アクチェンゲゼルシャフト | ポリウレタンフォーム層、吸収層および被覆層を含んでなる、創傷処置用品として適した層状複合材料 |
JP2013539380A (ja) * | 2010-08-19 | 2013-10-24 | パウル ハルトマン アクチェンゲゼルシャフト | 負圧治療の創傷包帯としてのポリウレタンの使用 |
Also Published As
Publication number | Publication date |
---|---|
RU2445947C2 (ru) | 2012-03-27 |
WO2008055586A1 (de) | 2008-05-15 |
EP1923077A1 (de) | 2008-05-21 |
RU2009119046A (ru) | 2010-12-20 |
DE502006008725D1 (de) | 2011-02-24 |
EP1923077B1 (de) | 2011-01-12 |
US20090216168A1 (en) | 2009-08-27 |
PL1923077T3 (pl) | 2011-06-30 |
CN101547709B (zh) | 2014-04-09 |
ES2361025T3 (es) | 2011-06-13 |
EP2091581A1 (de) | 2009-08-26 |
CN101547709A (zh) | 2009-09-30 |
ATE494914T1 (de) | 2011-01-15 |
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