JP6947506B2 - 組織治癒のためのシステム - Google Patents
組織治癒のためのシステム Download PDFInfo
- Publication number
- JP6947506B2 JP6947506B2 JP2016569568A JP2016569568A JP6947506B2 JP 6947506 B2 JP6947506 B2 JP 6947506B2 JP 2016569568 A JP2016569568 A JP 2016569568A JP 2016569568 A JP2016569568 A JP 2016569568A JP 6947506 B2 JP6947506 B2 JP 6947506B2
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- wound
- ester
- absorbent dressing
- wound bed
- pores
- 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.)
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Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/05—Bandages or dressings; Absorbent pads specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- 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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive bandages or dressings
- A61F13/0203—Adhesive bandages or dressings with fluid retention members
- A61F13/0223—Adhesive bandages or dressings with fluid retention members characterized by parametric properties of the fluid retention layer, e.g. absorbency, wicking capacity, liquid distribution
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/915—Constructional details of the pressure distribution manifold
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/916—Suction aspects of the dressing specially adapted for deep wounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/98—Containers specifically adapted for negative pressure wound therapy
- A61M1/984—Containers specifically adapted for negative pressure wound therapy portable on the body
- A61M1/985—Containers specifically adapted for negative pressure wound therapy portable on the body the dressing itself forming the collection container
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/918—Suction aspects of the dressing for multiple suction locations
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Description
本開示は、2014年2月14日に出願された米国仮特許出願第61/940,245号の利益を主張するものであり、その内容を全体として参照によって本明細書中に援用する。
本発明は、機能的ブロック成分と様々な処理ステップの観点から記載し得る。斯かる機能的ブロックは指定された機能を実施し、様々な結果を得るように構成されたいろいろな成分によって実現され得る。例えば、本発明は、様々な処理ステップ、装置、システム、方法などを利用し得る。加えて、本発明は、開放創を治療するためのいろいろなシステムや方法に関連して実施され得る。更に、本発明は、創傷部の処置、創傷床の準備、創感染の治療又は予防、炎症の軽減、創傷部からの体液抽出、創傷ドレッシングの変更、及び創縁の前進予防のためのいろいろな従来の手法を利用し得る。
胆管接合部に3つの腸皮瘻孔を有しているクローン病と診断された女性患者を入院させた。様々な在来の治療法を試みたが、1日あたり1000〜2000mlの液体漏出速度を有する彼女の瘻孔は残った。患者に彼女の体ではこの瘻孔が自然治癒しないことを説明し、そして末期であることを宣告した。患者は、エステル系フォームを直接瘻孔に配置する実験手順に同意した。エステル系フォームを、V.A.C.VeraFlo Cleanse(商標)Dressingという商品名でKinetic Concepts, Inc.から販売されている133〜600μmの細孔サイズを有する網状ポリウレタンエステルフォームで構成した。細孔のサイズがフォーム内で方向性をもって変化するように、エステル系フォームをフェルト状にしたが、ここで、細孔サイズは、フェルト形成の方向(すなわち、厚さ)に沿ってよりもフォームの全長に沿った方が大きかった。図1で例示したように、瘻孔に対して垂直なエステル系フォームの幅及び瘻孔と直接接触状態にあるエステルフォーム平面を有するフォームを瘻孔に直接配置し、閉塞材料で覆い、そして真空チューブを介して真空ポンプに取り付けた。第二の真空チューブ及びポンプを、瘻孔と反対側の創傷端部に配置して、第一の真空ポンプによって回収されなかった排出排液を回収した。エステル系フォームを3日間毎に交換した。実験手順の約12時間以内に、液体排出は約500ml/日の速度まで低下した。日が進むにつれ、液体排出は約200ml/日まで低下した。加えて、創傷部の全体的な色合い、質感、及び臭いが3日以内に改善した。創傷床の組織が、黄色がかった壊死塊で覆われた組織から赤色の肉のような肉芽組織に改善された。加えて、液体排出の減少よると思われるが、創傷部位の胆汁の臭いが実験手順の初めの3日以内に減少した。
Claims (10)
- 陰圧処置システムにおける、創傷床の処置のための吸収性ドレッシングであって:
創傷床における実質的な細胞破損又は損傷を引き起こすことなく創傷床と接触するための創傷に面する側面を有するエステル系フォームであって、約0.2μm〜約20μmの平均直径を伴うオープンセル型細孔を有するエステル系フォーム;及び
前記エステル系フォームの創傷に面する側面から離れている吸収性ドレッシングの側面に適用され、創傷床においてシールを形成するように構成された閉塞材料であって、吸収性ドレッシングに陰圧真空ポンプを接続するための開口を有する閉塞材料を備えており、
前記エステル系フォームが前記創傷床に隣接し、そして、前記吸収性ドレッシングが前記エステル系フォームと隣接するフォームの第二層を含み、前記フォームの第二層が、前記エステル系フォームの平均細孔サイズより大きな平均細孔サイズを伴う細孔を有することを特徴とする、吸収性ドレッシング。 - 前記エステル系フォーム内に1又は複数のあらかじめ形成された流路を更に含み、かつエステル系フォームの細孔の平均細孔サイズより大きな平均細孔サイズを有する、請求項1に記載の吸収性ドレッシング。
- 前記1又は複数のあらかじめ形成された流路が、砂時計様形状に配置される、請求項2に記載の吸収性ドレッシング。
- 前記エステル系フォーム内に1又は複数の翼様形状の障壁を更に含む、請求項1に記載の吸収性ドレッシング。
- 前記1又は複数の翼様形状の障壁が、概して円形に配置される、請求項4に記載の吸収性ドレッシング。
- 複数の注入ポートを通じて創傷床の上方の領域に液体を送達するように構成された送達チューブを含む放射状ハウジングを更に含む、請求項1に記載の吸収性ドレッシング。
- 前記放射状ハウジングが砂時計様形状を有する、請求項6に記載の吸収性ドレッシング。
- 前記細孔の平均直径が約0.2μm〜約2μmである、請求項1に記載の吸収性ドレッシング。
- 創傷床の処置のための陰圧処置システムであって:
創傷床における実質的な細胞破損又は損傷を引き起こすことなく創傷床と接触するための創傷に面する側面を有する吸収性ドレッシングであって、約0.2μm〜約20μmの平均直径を伴うオープンセル型細孔を有するエステル系フォームを含む吸収性ドレッシング;
前記吸収性ドレッシングに陰圧をかけ、それによって、創傷床から創傷液を吸い出すように構成された真空ポンプ;
前記エステル系フォームの創傷に面する側面から離れている吸収性ドレッシングの側面に適用され、創傷床においてシールを形成するように構成された閉塞材料であって、吸収性ドレッシングに真空ポンプを接続するための開口を有する閉塞材料;及び
前記エステル系フォームの平均細孔サイズより大きい平均細孔サイズを伴う細孔を有するフォームの第二層を含むことを特徴とする、陰圧処置システム。 - 前記吸収性ドレッシングの界面層を更に含み、前記界面層がエステル系材料を含み、そして、前記界面層が、約0.2μm〜約20μmの平均直径を伴う細孔を有するフィルムを含む、請求項9に記載の陰圧処置システム。
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