JP6092469B2 - 拡張可能な創傷被覆材 - Google Patents
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Description
a.創傷が湿っている又は乾燥したままでいるように、水分含有量を調整する;
b.創傷を感染から保護する;
c.かさぶたを除去する;
d.治癒を促進するため、最適なpH及び温度を維持する。
細胞遊走アッセイ
in vitroスクラッチアッセイは、in vitroの細胞遊走を測定するために、容易、低コスト、及びよく開発された方法である。基本的な手順は、細胞単層に「スクラッチ」を作り、最初からスクラッチが閉じるまでの細胞遊走の間、定期的な間隔で画像を撮影し、そして細胞の遊走速度を定量化するため画像を比較する、ことを含む。他の方法と比較して、in vitroスクラッチアッセイは、細胞遊走、in vivoでの創傷の治癒過程における模擬細胞遊走における細胞マトリクス及び細胞と細胞との相互作用の効果の研究のために特に好適であり、必要に応じて細胞内のイベントを監視するための遊走の間の生細胞の画像化を両立して行うことができる。均質な細胞集団の遊走を監視することに加えて、この方法は、スクラッチの先端における個々の細胞の遊走を測定するために採用される。細胞のトランスフェクションのための時間を考慮しなければ、in vitroスクラッチアッセイそれ自体では、通常数時間から一晩かかる。
阻害ゾーン試験
細胞修復が最も効率的であるためには、利用可能なエネルギーが、偏在する微生物と共有されるべきではない。この「阻害ゾーン」テストにおいて、プラセボ、LLMC装置(PROCELLERA(登録商標))及び銀のみが、寒天培地における生物の24時間の成長により試験された。バクテリアの成長は、プラセボ上で存在し、PROCELLERA(登録商標)上では阻害ゾーンがあり、銀上では最小限の阻害ゾーンが存在した。サンプルが寒天に「埋められた」ため、LLMCシステムの電気的な効果を試験することができた。これは微生物が電場によって影響を受け、又は寒天を通じた銀イオンの輸送が電場の存在下で強化されることを示しうる。銀イオンの拡散、銀系抗菌剤を用いた方法、単独では十分ではなかった。試験は、銀単独と比較して、PROCELLERA(登録商標)の改善された殺菌効果を実証している。
創傷ケア研究
「標準のケア(standard-of-care)」創傷治療(「SOC」;n=20)、又は本開示のLLMC装置を用いた治療(n=18)を受けた患者の病歴を検討した。本研究で用いられた創傷ケア装置は、銀と亜鉛のドットの分離したマトリクスからなる。ドット間では約0.8Vの持続的な電圧が発生した。装置表面で発生した電場は、0.2〜1.0V、10〜50μAであると測定された。
膝の裂傷の治療
14歳の少年がホッケーをプレイ中に膝を怪我する。救急治療室の医師は、創傷を洗浄し、創傷管理システムを図8(上)に示すように適用した。包帯を適用する前に、TEGADERM(登録商標)91110活性化ゲルを創傷表面に適用する。包帯の長軸は、まっすぐな状態にある膝の膝関節を渡って垂直方向に適用される。包帯の発泡材料内のスリットによって、膝が曲がった際に包帯が伸びることができる。包帯は、内面に図1に示す電極パターンを有する。
糖尿病性潰瘍の治療
糖尿病の既往歴のある58歳の男性は、足に潰瘍がある。他のすべての治療法は、潰瘍を癒すのに失敗した。生体適合性のマイクロセルのマルチアレイマトリクスを含む生体電気の抗菌性装置を備える創傷管理システムは、MLCT治療プロトコル中の要素として潰瘍上に適用され、適切な創傷管理に従って、定期的に変更される。治癒開始は数週間以内に観察され、潰瘍は完全に5ヶ月以内に閉鎖される。
擦過傷の治療
47歳の女性は、自動車事故でひどく腕を擦りむいた。関節の動作を可能とする不連続領域を有する実施形態を含む、ここで開示されたような創傷管理システムが、その女性の傷に適用される。傷は皮膚移植を必要とせずに治癒する。
全層創傷の治療
35歳の男性が肩の火傷を患っている。火傷は切除され、そして生体適合性のマイクロセルのマルチアレイマトリクスを含む生体電気の抗菌装置を備える柔軟性の創傷管理システムが、創傷を覆うために使用される。システムはここで説明されたように、肩関節の動きが可能となるよう設計される。火傷は皮膚移植を必要とせずに治癒する。
手術部位の治療
扁平上皮癌を患う56歳の女性は、腫瘍を取り除く処置を受ける。腫瘍除去部位は、生体適合性マイクロセルのマルチアレイマトリクスを含む生体電気の抗菌性装置を備える創傷管理システムで覆われる。手術部位は、最小限の瘢痕で治癒する。
開放骨折の治療
15歳の男性は、骨と筋肉が露出したグレードIIIの開放脛骨腓骨骨折を患っている。創傷は、ここで説明されたような、生体適合性マイクロセルのマルチアレイマトリクスを含む生体電気の抗菌性装置を備える創傷管理システムで被覆された。創傷は筋肉又は皮膚移植の必要なく治癒する。創傷は、本開示の創傷管理システムの広い範囲の抗菌効果の結果として、微生物汚染がない状態に保たれる。
手術部位の治療
25歳の男性は、前十字靱帯(ACL)の断裂を患っている。ACLを修復する手術の後、関節の動きが可能となるよう不連続の領域を有する実施形態を含む生体適合性のマイクロセルのマルチアレイマトリクスを含む生体電気の抗菌被覆材料を備える創傷管理システムが手術部位に適用される。創傷は、創傷管理システムの広い範囲の抗菌効果の結果として、微生物汚染がない状態に保たれる。第1段階のリハビリテーション中は、次の目標、術後痛のコントロール、炎症の軽減、動きの特定の面における受動運動の提供、治癒の修復又は組織の保護が追求される。連続受動運動(CPM)が、制御された範囲の動きを通して常に関節を動かすために、用いられる。患者は、物理的な機能に関し制限が全くなく、完全に回復する。
銃創の治療
25歳の男性が下腹部において銃創を患っている。出血が止められ、そして創傷は、生体適合性のマイクロセルのマルチアレイマトリクスを備える生体電気の抗菌性被覆材を備える創傷管理システムで被覆される。次の8週間で、創傷は皮膚移植を必要とせずに治癒する。創傷は、ここで開示されている創傷管理システムの広い範囲の抗菌効果の結果として、微生物汚染がない状態保たれる。
裂傷の治療
25歳の男性が足に深い裂傷を患っている。ここで説明されているように複数の「スリット」を備える創傷管理システムは、伸ばされ、創傷両端を一緒に引くように創傷をわたって適用される。創傷は、4週間以内に最小限の瘢痕化で完全に治癒する。
[付記]
[付記1]
少なくとも1つの低レベル電場(LLEF)又は低レベル微電流(LLMC)を生成することが可能な生体適合性電極を備える基体を備え、
前記基体は少なくとも1つの不連続領域を備える、
ことを特徴とする創傷被覆材。
[付記2]
前記生体適合性電極は、第1の導電性材料から形成されたマイクロセルのパターンを備える第1のアレイと、第2の導電性材料から形成されたマイクロセルのパターンを備える前記第2のアレイと、を備える、
ことを特徴とする付記1に記載の被覆材。
[付記3]
前記第1の導電性材料と前記第2の導電性材料は、同じ材料を備える、
ことを特徴とする付記2に記載の被覆材。
[付記4]
前記第1及び第2のアレイは、それぞれ個別の回路を備える、
ことを特徴とする付記3に記載の被覆材。
[付記5]
電源を更に備える、
ことを特徴とする付記4に記載の被覆材。
[付記6]
前記第1のアレイ及び前記第2のアレイは、自発的にLLEFを生成する、
ことを特徴とする付記2に記載の被覆材。
[付記7]
前記第1のアレイ及び前記第2のアレイは、前記アレイ同士が電気的に接続された場合に、自発的にLLMCを生成する、
ことを特徴とする付記6に記載の被覆材。
[付記8]
前記LLEFは、0.05から5ボルトの間である、
ことを特徴とする付記6に記載の被覆材。
[付記9]
前記LLEFは、0.1から5ボルトの間である、
ことを特徴とする付記8に記載の被覆材。
[付記10]
前記LLEFは、1.0から5ボルトの間である、
ことを特徴とする付記8に記載の被覆材。
[付記11]
前記基体は柔軟性材料を備える、
ことを特徴とする付記1に記載の被覆材。
[付記12]
前記LLMCは、1から200マイクロアンペアの間である、
ことを特徴とする付記7に記載の被覆材。
[付記13]
前記LLMCは、1から100マイクロアンペアの間である、
ことを特徴とする付記13に記載の被覆材。
[付記14]
前記LLMCは、100から200マイクロアンペアの間である、
ことを特徴とする付記13に記載の被覆材。
[付記15]
前記LLMCは、150から200マイクロアンペアの間である、
ことを特徴とする付記13に記載の被覆材。
[付記16]
少なくとも1つの軸に沿って拡張可能な創傷管理システムであって、
そのような創傷管理システムは、生体適合性マイクロセルのマルチアレイマトリクスをその表面に備える柔軟性の被覆材料を備え、
そのようなマトリクスは、第1の導電性材料から形成されたマイクロセルのパターンを形成する第1のアレイと、第2の導電性材料から形成されたマイクロセルのパターンを形成する第2のアレイであって、そのような導電性材料は、前記第1のアレイの金属種とともに少なくとも1つの電場を自発的に生成するための少なくとも1つのボルタ電池を定義可能である、第2のアレイと、を備え、
当該創傷管理システムは、更に少なくとも1つの不連続領域を備える、
ことを特徴とする創傷管理システム。
[付記17]
前記少なくとも1つの不連続領域が、少なくとも1つのスロットを備える、
ことを特徴とする付記16に記載の創傷管理システム。
[付記18]
2つ以上のスロットを備える、
ことを特徴とする付記16に記載の創傷管理システム。
Claims (18)
- 少なくとも1つの低レベル電場(LLEF)又は低レベル微電流(LLMC)を生成することが可能な生体適合性電極を備える基体を備える創傷被覆材であって、
前記基体は、少なくとも1つの長軸を備える少なくとも1つの不連続領域を備え、
当該創傷被覆材が、前記長軸に対して垂直に拡張可能である、
ことを特徴とする創傷被覆材。 - 前記生体適合性電極は、第1の導電性材料から形成されたマイクロセルのパターンを備える第1のアレイと、第2の導電性材料から形成されたマイクロセルのパターンを備える前記第2のアレイと、を備える、
ことを特徴とする請求項1に記載の被覆材。 - 前記第1の導電性材料と前記第2の導電性材料は、同じ材料を備える、
ことを特徴とする請求項2に記載の被覆材。 - 前記第1及び第2のアレイは、それぞれ個別の回路を備える、
ことを特徴とする請求項3に記載の被覆材。 - 電源を更に備える、
ことを特徴とする請求項4に記載の被覆材。 - 前記第1のアレイ及び前記第2のアレイは、自発的にLLEFを生成する、
ことを特徴とする請求項2に記載の被覆材。 - 前記第1のアレイ及び前記第2のアレイは、前記アレイ同士が電気的に接続された場合に、自発的にLLMCを生成する、
ことを特徴とする請求項6に記載の被覆材。 - 前記LLEFは、0.05から5ボルトの間である、
ことを特徴とする請求項6に記載の被覆材。 - 前記LLEFは、0.1から5ボルトの間である、
ことを特徴とする請求項8に記載の被覆材。 - 前記LLEFは、1.0から5ボルトの間である、
ことを特徴とする請求項8に記載の被覆材。 - 前記基体は柔軟性材料を備える、
ことを特徴とする請求項1に記載の被覆材。 - 前記LLMCは、1から200マイクロアンペアの間である、
ことを特徴とする請求項7に記載の被覆材。 - 前記LLMCは、1から100マイクロアンペアの間である、
ことを特徴とする請求項12に記載の被覆材。 - 前記LLMCは、100から200マイクロアンペアの間である、
ことを特徴とする請求項12に記載の被覆材。 - 前記LLMCは、150から200マイクロアンペアの間である、
ことを特徴とする請求項12に記載の被覆材。 - 少なくとも1つの軸に沿って拡張可能な創傷管理システムであって、
そのような創傷管理システムは、生体適合性マイクロセルのマルチアレイマトリクスをその表面に備える柔軟性の被覆材料を備え、
そのようなマトリクスは、第1の導電性材料から形成されたマイクロセルのパターンを形成する第1のアレイと、第2の導電性材料から形成されたマイクロセルのパターンを形成する第2のアレイであって、そのような導電性材料は、前記第1のアレイの金属種とともに少なくとも1つの電場を自発的に生成するための少なくとも1つのボルタ電池を定義可能である、第2のアレイと、を備え、
当該創傷管理システムは、更に少なくとも1つの長軸を備える少なくとも1つの不連続領域を備え、
当該創傷管理システムが、前記長軸に対して垂直に拡張可能である、
ことを特徴とする創傷管理システム。 - 前記少なくとも1つの不連続領域が、少なくとも1つのスロットを備える、
ことを特徴とする請求項16に記載の創傷管理システム。 - 2つ以上のスロットを備える、
ことを特徴とする請求項16に記載の創傷管理システム。
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