TW200942281A - Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site - Google Patents
Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site Download PDFInfo
- Publication number
- TW200942281A TW200942281A TW098107237A TW98107237A TW200942281A TW 200942281 A TW200942281 A TW 200942281A TW 098107237 A TW098107237 A TW 098107237A TW 98107237 A TW98107237 A TW 98107237A TW 200942281 A TW200942281 A TW 200942281A
- Authority
- TW
- Taiwan
- Prior art keywords
- layer
- reduced pressure
- dressing
- tissue site
- pump
- Prior art date
Links
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Classifications
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- 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
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- A61F13/00063—Accessories for dressings comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic
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- 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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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
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- A61M1/98—Containers specifically adapted for negative pressure wound therapy
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- 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
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- A61M1/912—Connectors between dressing and drainage tube
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- 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
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- A61M2205/00—General characteristics of the apparatus
- A61M2205/75—General characteristics of the apparatus with filters
- A61M2205/7536—General characteristics of the apparatus with filters allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
- External Artificial Organs (AREA)
- Materials For Medical Uses (AREA)
Description
200942281 六、發明說明: 【發明所屬之技術領域】 本發明大體而言係關於組織治療系統,且特定言之,係 關於將減壓分布至組織部位及自組織部位收集及容納流體 之敷料。 本申請案主張2008年3月5曰所申請之美國臨時申請案第 61/034,013號之權利及2008年4月30日所申請之美國臨時申 請案第61/049,028號之權利,此兩者均以引用方式併入本 文中。 【先前技術】 臨床研究及實務已證明,接近組織部位處提供減壓可強 化且加快該組織部位處新組織之生長。此現象之應用多種 多樣,但減壓之應用在治療傷口方面尤其成功。此治療 (醫學界通常稱之為「負壓傷口療法」、「減壓療法」或 「真空療法」)提供多種益處’包括更快癒合及增加之肉 芽組織形成。通常,經由多孔墊或其他歧管裝置向組織施 以減壓。多孔塾含有能夠將減壓分布至組織並引導自組織 吸取之流體的室或孔洞。多孔墊可併入具有便於治療之其 他組件的敷料中。 【發明内容】 現有收集罐所呈現之問題可由本文中所述之說明性實施 例之系統及方法解決。在一個說明性實施例中,提供一種 用於將減壓治療施用予組織部位之減壓敷料。該減壓敷料 包括調適成定位於該組織部位處的介面層。吸收層與該介 139019.doc 200942281 面層流體連通以自該介面層及該組織部位中之至少一者吸 收液體。泵與該吸收層流體連通以將減壓傳遞至該組織部 位。覆蓋層定位於該泵、該吸收層及該介面層上以將減壓 維持於該組織部位處,且液_氣分離層定位於該吸收層與 該泵之間以抑制液體進入該泵内。 在另一說明性實施例中,一種用於向一組織部位施以減 壓治療的減壓敷料包括調適成定位於該組織部位處的介面 層。吸收層與該介面層流體連通以自該介面層及該組織部 ® 位中之至少一者吸收液體。泵與該吸收層流體連通以將減 壓傳遞至該組織部位。分流層定位於該吸收層與該泵之 間,且該分流層包括複數個孔洞以將減壓自該泵傳輸至該 • 吸收層。覆蓋層定位於該泵、該分流層、該吸收層及該介 面層上以將減壓維持於該組織部位處。液_氣分離層定位 * 於該分流層與該泵之間以抑制液體進入該泵内。 在另說明性實施例中,提供一種用於向一組織部位施 參以減壓治療的減壓敷料。該減壓敷料包括調適成定位於該 組織部位處之介面層及與該介面層流體連通以自該介面層 及》亥組織部位中之至少一者吸收液體的吸收層。分流層鄰 接於該及收層’且該分流層係由大體上不透氣的材料形 成。該分流層包括複數個與該吸收層流體連通之孔洞以延 長吸收層能夠分布減壓之時間。泵與該分流層之複數個孔 洞流體連通以將減壓傳遞至該組織部位。覆蓋層定位於該 栗、該分流層、該吸收層及該介面層上以將減壓維持於該 組織部位處。液·氣分離層定位於該分流層與該泵之間以 139019.doc 200942281 抑制液體進入該泵内。 在另一說明性實施例中,提供一種用於向組織部位施以 減壓治療的減壓敷料。該減壓敷料包括調適成定位於該組 織部位處的介面層《第一歧管層與該介面層流體連通,且 吸收層與該第一歧管層流體連通以自該第一歧管層、該介 面層及該組織部位中之至少一者吸收液體。分流層係由大 體上不透氣的材料形成’且該分流層包括複數個與該吸收 層流體連通的間隔孔洞。第二歧管層與該分流層流體連 通。泵與該第二歧管層流體連通以將減壓傳遞至該組織部 位。覆蓋層定位於該泵、該第二歧管層、該分流層、該吸 收層、該第一歧管層及該介面層上以將減壓維持於該組織 部位處。液-氣分離層定位於該第二歧管與該泵之間以抑 制液體進入該泵内。 在另一說明性實施例中,一種將液體收集於定位於組織 部位處之敷料中的方法包括使用定位於該敷料内之泵產生 減壓。自該組織部位吸收液體且將液體容納於該敷料内。 防止液體進入該泵内。 在另一說明性實施例中,調適成將減壓分布至組織部位 的減壓敷料包括調適成定位於該組織部位處之介面層。吸 收層與該介面層流體連通以自該介面層及該組織部位中之 至少一者吸收液體。泵與該吸收層流體連通以將減壓傳遞 至该組織部位,分流層定位於該吸收層與該泵之間。該分 抓層係由大體上不透氣的材料形成且包括小於該吸收層之 表面積的表面積以便引導圍繞該分流層之至少一個周緣流 139019.doc 200942281 動。覆蓋層定位於該分流層上以將減壓維持於該組織部位 處。 在另一說明性實施例中,提供一種調適成將減壓分布至 組織部位的減壓敷料。該敷料包括調適成定位於該組織部 位處的介面層。吸收層與該介面層流體連通以自該介面層 及該組織部位中之至少一者吸收液體。泵與該吸收層流體 • 連通以將減壓傳遞至該組織部位,且分流層定位於該吸收 層與該泵之間。該分流層係由大體上透氣但不透液的材料 參 开多成。覆蓋層定位於該分流層上以將減壓維持於該組織部 位處。 參考下述圖式及實施方式,該等說明性實施例之其他目 標、特徵及優點將變得顯而易見。 ' 【實施方式】 . 在以下對於若干說明性實施例之詳細說明中,參考形成 其一部分之隨附圖式,且該等圖式中以舉例說明之方式展 ❹#可實施本發明之特定較佳實施例。㈣實施例經充分詳 細描述足以使熟習此項技術者能夠實施本發明,且應瞭 解,可使用其他實施例且可在不背離本發明之精神或範疇 •下進行邏輯結構、機械、電學及化學修改。為避免對於使 __習此項技術者能夠實施本文中所述之實❹】而言並非必 需的細節,描述可能省去熟習此項技術者已知的某些資 訊。因此以下詳細描述不應理解為具有限制性,且說明性 實施例之範疇僅由隨附申請專利範圍限定。 如本文中所使用之術語「減壓」通常係指在接受治療之 139019.doc 200942281 組織部位處小於環境壓力的壓力。在大多數情況下,該減 塵將小於患者所處之大氣壓。或者,在組織部位處,減壓 可小於與組織相關的流體靜壓力。雖然術語「真空」及 「負廢」可用於描述施加於組織部位的壓力,但施加於組 織部位的實際減壓可能明顯小於通常與完全真空相關的減 壓。減壓最初可在組織部位之區域内形成流體流動。當組 織部位周圍的流體靜壓力接近所要減壓時,流動會減緩, 且接著維持減壓。除非另有說明,否則本文中所述之壓力 值為錶壓。類似地,提及減壓增大通常係指絕對壓力降 低,而減壓減小通常係指絕對壓力增大。 如本文中所使用之「組織部位」係指位於任何組織上或 任何組織内的傷口或缺損,組織包括(但不限於)骨組織、 脂肪組織、肌肉組織、神經組織、表皮組織、脈管組織、 結締組織、軟骨、腱或韌帶。術語「組織部位」可進一步 指未必受傷或有缺損的任何組織區域,而係指需要增進或 促進其他組織生長的區域。舉例而言,減壓組織治療可用 於某些組織區域中以使可收穫且移植於另一組織部位的其 他組織生長。 減壓治療系統通常應用於接受急性病或慢性病嘆理之串 者所出現的高滲出性大型傷口 ’以及其他不施以減展不易 癒合的嚴重傷口。體積較小且產生較少滲出液的低嚴重度 傷口一般使用高級敷料而非減壓療法治療。然而,該等高 級敷料不適合與減壓一起使用且當與減壓聯合使用時出現 若干缺陷。舉例而言’該等現有敷料可能不會最佳地利用 139019.doc 200942281 敷料之流體容納能力。此外,現有敷料未組態成充分傳輸 減壓,尤其當敷料開始吸收並容納流體時。 目前,歸因於監控及更換系統組件所需之人力、對監督 治療之經培訓醫務人員的要求及治療成本,使用減壓治療 • 並不視為低嚴重度傷口之可行或可承受的選擇。舉例而 S,當前減壓治療系統之複雜度限制具有很少專業知識或 不具有專業知識者向自身或其他人投予此治療的能力。當 冑減M治㈣統之尺寸亦肖彳弱治療系統與被射治療者兩 纟之可動性。舉例而言,#前減m㈣需要使用容納 來自組織部位之滲出液或其他液體的單獨罐。再者當前減 壓治療系統在每次治療之後通常不可拋棄,且需要電力組 件或其他動力裝置來施以用於治療的減壓。 減壓敷料 * 參看圖1 ’根據一說明性實施例之減壓治療系統100包括 定位於患者之組織部位108處的減壓敷料104。減壓敷料 ❹ 1〇4由導管112與減壓源110流體連通。導管112可經由管配 接器116與減壓敷料104流體連通。在圖丨所說明之實施例 中,減壓源110為人力致動泵,諸如可壓縮伸縮泵。在另 一貝施例中,減壓源丨丨0可為由馬達驅動的減壓泵或真空 ‘泵H實施例中’減壓源11G可為動力微型m,諸如 壓電盤泵,或蹲動果。在另一實施例中,減壓源110可為 J式抽及口,諸如醫院及其他醫療設施中可用到的壁式抽 吸口。 減壓源110可安裴於減壓治療單元内,該減壓治療單元 139019.doc 200942281 亦可含有感測器、處理單元、警報指示器、記憶體、資料 庫、軟體、顯示器單元及進一步便於向組織部位1 〇8施以 減壓治療的使用者介面。在一實例中,感測器或開關(未 圖示)可配置於減壓源i 10處或附近以測定減壓源i 10所形 成之源塵力。感測器可與監測並控制減壓源〗1()所傳出之 減壓的處理單元通信。將減壓傳遞至減壓敷料1〇4及組織 部位108可藉由維持滲出液自組織部位排出來促使新組織 生長’從而增加至組織部位周圍之組織的血液流動,且在 組織部位處形成微應變。 參看圖2及圖3’減壓敷料1〇4包括調適成定位於組織部 位108處的介面層220 ’及圍繞組織部位1 密封減壓敷料 104的密封層222。第一歧管層224與介面層220流體連通以 將減壓分布至介面層220及組織部位1〇8。吸收層228定位 成與第一歧管層224流體連通以自第一歧管層224、介面層 220及組織部位1 〇8中之至少一者吸收液體。分流層232鄰 接於吸收層228定位。第二歧管層236定位成與分流層232 流體連通,且液-氣分離層240鄰接於第二歧管層23 6定 位。覆蓋層244或覆布鄰接於液-氣分離層240定位。 減壓敷料104之介面層220調適成接觸組織部位丨。介 面層220可與經減壓敷料1 04治療之組織部位1 〇8部分或完 全接觸。當組織部位108為傷口時,介面層220可部分或完 全填充傷口。 視多種因素(諸如所實施之治療類型或組織部位1〇8之性 質及尺寸)而定,介面層220可具任何尺寸、形狀或厚度。 139019.doc -10- 200942281 舉例而言,介面層220之尺寸及形狀可由使用者定製以覆 蓋組織部位1〇8之特定部分或填充或部分填充組織部位 1〇8。雖然圖3中所說明之介面層22〇具有方形形狀,但介 面層220可成开^為圓形、橢圓形、多邊形、不規則形狀或 任何其他形狀。 在一說明性實施例中,介面層22〇為發泡體材料,其充 虽歧管以便在介面層220接觸或接近組織部位1 〇8時向組織 部位108提供減壓。該發泡體材料可具疏水性或親水性。 在一非限制性實例中,介面層22〇為開室式網狀聚胺基甲 酸醋發泡體,諸如可獲自Kinetic concepts,inc.(San
Antonio,Texas)的 GranuFoam®敷料。 在介面層220由親水性材料製成的實例中,介面層22〇亦 起自組織部位108芯吸出流體的作用,同時作為歧管繼續 向組織部位1 〇8提供減壓。介面層22〇之芯吸特性藉由毛細 流動或其他怒吸機制自組織部位1〇8吸出流體。親水性發 泡體之一實例為聚乙烯醇開室式發泡體,諸如可獲自
Kinetic Concepts, Inc.(San Antonio,· Texas)的 v.A C
WhiteFoam®敷料。其他親水性發泡體可包括由聚醚製成的 彼等發泡體。可呈現親水特徵的其他發泡體包括已經處理 或塗佈以便提供親水性的疏水性發泡體。 當經由減壓敷料104施以減壓時,介面層22〇可進一步促 進組織部位1 08處之肉芽形成。舉例而言,介面層220之任 何或所有表面可具有不平坦、粗糙或鋸齒狀輪廓,其在經 由介面層220施以減壓時在組織部位1〇8處引起微應變及應 139019.doc 200942281 力。該等微應變及應力經展示可增加新組織生長。 在一個實施例中’介面層220可由在使用減壓敷料1〇4之 後不必自患者身體移除的生物可再吸收性材料建構。適當 的生物可再吸收性材料可包括(不限於)聚乳酸(pLA)與聚 乙醇酸(PGA)之聚合摻合物。該聚合摻合物亦可包括(不限 於)聚碳酸酯、聚反丁烯二酸酯及己内酯。介面層22〇可進 一步充當新細胞生長之支架’或可與介面層22〇聯合使用 支架材料以促進細胞生長。支架為用於增強或促進細胞生 長或組織形成的物質或結構,諸如提供細胞生長模板的三 維多孔洞結構^支架材料之說明性實例包括磷酸鈣、膠 原、PL A/PGA、珊瑚羥基磷灰石、碳酸酯或經處理之同種 異體移植材料。 減壓敷料104之密封層222包括孔洞或開口 231且提供一 圍繞組織部位108之密封。密封層222可充當圍繞組織部位 108之一部分的密封墊以防止施加於減壓敷料1〇4的減壓自 減壓敷料1 04中洩漏。密封層222亦可用於將介面層22〇緊 固於、.且織β卩位1 〇8處。若將覆蓋層244施加於組織部位j 周圍之在覆蓋層244中具有褶皺之組織,則密封層222有助 於將覆蓋層244維持於褶皺區域中。 密封層222可具有能夠圍繞組織部位!〇8提供密封的任何 尺寸及厚度。在圖2之實例中,密封層222之長度L2及寬度 W2分別大於介面層22〇之長度L1及寬度wi。因此,密封 層222之部分伸展超出介面層220之邊緣。該等部分可直接 接觸組織部位108周圍之組織,從而圍繞組織部 位108及介 139019.doc 200942281 面層220提供密封。 雖然圖3中所說明之密封層222具有方形形狀,但密封層 222亦可具有圍繞組織部位1〇8或介面層220提供密封的任 何其他形狀。其他形狀之非限制性實例包括圓形、橢圓 形、任何多邊形形狀、不規則形狀,或定製成與組織部位 108周圍之組織或介面層22〇之輪廓相吻合的形狀。 掛封層222可由任何能夠密封圍繞於組織部位1 〇8之經治 療部分的任何材料所製成。在一個說明性實施例中,密封 層222可包括水凝膠或由水凝膠製成。密封層222亦可包括 水膠體或矽中之任一者或兩者。 雖然密封層222顯示係配置鄰接於介面層22〇,但密封層 222可定位鄰接於減壓敷料1 〇4之任意層或介於減壓敷料 104之任意層之間。有關密封層222定位的其他細節在下文 參考圖2更詳細地論述。 減廢敷料1 04亦包括第一歧管層224以便將減壓分布至介 面層220及自介面層220吸取液體,諸如滲出液。當密封層 222鄰接於介面層220定位時’可經由孔洞23 1自組織部位 1 08吸取液體。當向減壓敷料1 〇4施以減壓時,由介面層 220自組織部位1 〇8芯吸液體且經由密封層222之孔洞23 1由 第一歧管層224吸出。 在一實施例中,孔洞23 1之長度L3及寬度W3小於介面層 220之長度L1及寬度W1。然而,在其他實施例中,尤其在 一或多個其他層配置於密封層222與介面層220之間的彼等 實施例中,孔洞231之長度L3及寬度W3可等於或大於介面 139019.doc -13- 200942281 層220之長度L1及寬度W1。雖然圖3中所說明之孔洞231具 有方形形狀,但孔洞23 1可具有容許密封層222提供密封, 同時便於來自組織部位108之液體通過的任何其他形狀。 第一歧管層224可具有任何尺寸、形狀或厚度。舉例而 言’第一歧管層224之尺寸及形狀可經定製以提供吸收層 228之不同利用度。第一歧管層224之尺寸及形狀亦可基於 減壓敷料104中之其他組件之尺寸及形狀(諸如介面層 220、密封層222、孔洞231、吸收層228或減壓敷料104中 之其他層之尺寸及形狀)定製。 # %d 第一歧管層224為能夠將減壓分布至組織部位1〇8的生物 相容性多孔洞材料。第一歧管層224可由發泡體、紗布、 氈墊或適於特定生物應用的任何其他材料製成。第一歧管 層224包括複數個便於減壓分布至組織部位1〇8或自組織部 _ 位108分布流體的流動通道或路徑。在一實施例中,第一 歧管層224為多孔洞發泡體且包括複數個充當流動通道的 互連室或互連孔洞。多孔洞發泡體可為開室式網狀聚胺基 甲酸西日發泡體’諸如GranuFoam®敷料。若使用開室式發泡〇 體,則孔洞隙可為約400至600微米或能夠適當分配減壓的 任:其他孔《。流動通道容許流體貫穿具有開室之第— 歧管層224之-部分流通。該等室及流動通道的形狀及尺 寸可旎不變,或其形狀及尺寸可能具有模式化或隨機變 化。第-歧管層224之室之形狀及尺寸變化引起流動通道 變化’且此等特徵可用於改變流體穿過第一歧管層224之 流動特徵。第一歧管層224可具疏水性或親水性。在一實 139019.doc -14- 200942281 施例中’第一歧管層224可由與介面層220相同的材料製 成。 在一實施例中,第一歧管層224可由與液體(諸如來自組 織部位108之滲出液)接觸後膨脹的材料製成,以使得第一 歧管層224將填充傷口部位或接觸組織部位丨〇8 ^在此實施 例中,第一歧管層224可使介面層220能夠移除,從而簡化 減壓敷料104之構造且降低其厚度或輪廓。 減壓敷料104之吸收層228鄰接於第一歧管層224配置以 便接收及吸收由第一歧管層224分布之液體。第一歧管層 224有助於來自組織部位108之液體如由多向箭頭239 一般 性指示放射狀向外移向第一歧管層224之邊緣,以使得液 體更均勻地分布於整個吸收層228上。若液體更均勻地分 布於吸收層228之整個表面上,則吸收層228將持留更多液 體。 圖3中孔洞231之表面積(定義為L3xW3)可能小於第一歧 管層224之表面積及吸收層228之表面積。第一歧管層224 之表面積與吸收層228之表面積均係由相應層之與孔洞23 i 之長度L3及寬度W3在相同平面内的長度及寬度決定。若 第一歧管層224不能向第一歧管層224之邊緣放射狀分布液 體,則吸收層228將主要吸收與孔洞23 1具有相同尺寸之吸 收層228之一部分中的液體。然而,因為第一歧管層224能 夠在多向箭頭239所示之方向上放射狀分布來自組織部位 108之液體,所以吸收層228之較大表面積暴露於液體,且 吸收層228可容納較大量之流體。雖然減壓敷料ι〇4係設計 139019.doc 200942281 成主要在減壓下使用,但來自組織部位108之液體在多向 箭頭239所示之方向上的分布可在施以減壓期間或在不存 在減壓下發生。即使在不向減壓敷料104施以減壓時,使 用第一歧管層224亦可達成吸收層228之更完全利用。 吸收層228調適成經由介面層220及第一歧管層224經由 密封層222之孔洞231自組織部位108吸收液體,諸如渗出 . 液。吸收層228亦調適成經由彼等層將減壓分配並傳遞至 組織部位108。吸收層228可由能夠吸收液體(諸如來自組 織部位之滲出液)的任何材料製成。在一實施例中,吸收 ❹ 層228可由超吸收纖維製成。超吸收纖維可聯合纖維之物 理或化學變化固持或結合液體。在一非限制性實例中,超 吸收纖維可包括獲自Technical Absorbents®, Ltd·之超吸收 纖維(Super Absorbent Fiber ; SAF)。吸收層 228可為纖維- 材料薄片或纖維材料氈,其中該等纖維自組織部位1〇8吸 收液體。含有纖維之吸收層228之結構可為編織結構或非 編織結構》吸收層228中之纖維可與液體接觸後膠凝,從 而截留液體。纖維之間的空間或空隙可容許向減壓敷料❹ 1〇4施加的減壓在吸收層228内並穿過吸收層228傳遞。在 -實施例中,吸收層228中纖維之纖維密度可為則 / 毫米。 π - 吸收層228可具有任何尺寸、形狀或厚度。若減壓敷料 ⑽需要額外液體容納能力,則可使用更大或更厚的吸收 層228。在另__實例中,出於對節省空間、便利性、緊致 性或成本的考量’可減小吸收層228之尺寸及厚度。 139019.doc •16- 200942281 減壓敷料104亦可包括鄰接於吸收層228配置的分流層 232、鄰接於分流層232配置的第二歧管層236及鄰接於第 二歧管層236配置的液-氣分離層240。分流層232包括複數 個孔洞眼247,經由該等孔洞眼247施加來自減壓源110之 減壓(參見圖1)。減壓由第二歧管層236分布至分流層232。 ' 孔洞眼247可以定圖案布置以便向吸收層228之部分施以減 •壓,以便在吸收層228自組織部位108吸收更多流體時增強 吸收層228向組織部位108持續傳遞減壓的能力。在圖3所 β 說明之實施例中,複數個孔洞眼247係以圍繞遠離分流層 232中心之分流層232周邊部分的圖案定位,以便遠離吸收 層228之中心區域向吸收層228施以減壓。分流層232聯合 第一歧管層224起作用,以確保吸收層228之吸收能力及吸 ' 收效率相對於不與分流層聯合使用的吸收層而言有所增 強。藉由提供液體在整個吸收層228内之較佳分布,分流 層232亦增加吸收層228能夠在敷料104中分配減壓的時間 -S' 〇 φ 分流層232可由增強相鄰吸收層之減壓傳輸及容納能力 的任何材料製成。舉例而言,分流層2 3 2可由大體上不透 • 液且不透氣的材料製成。或者,用來製成分流層232的材 . 料亦可具有與透氣率相符的預定水蒸氣傳遞率。在任一實 例中,分流層232可能還包括定圖案之孔洞眼以便傳輸比 建構分流層232之可透氣材料所容許之量更大量的液體或 氣體。然而應注意,分流層232對氣體而非液體之透過性 可引起減壓穿過敷料之傳輸增強,同時仍引導液體圍繞或 139019.doc -17- 200942281 靠近分流層232之周邊流動。 在圖3所說明之實施例中,減壓形成穿過孔洞眼247之流 動。穿過孔洞眼247之流動可引導吸入吸收層228内之液體 遠離吸收層228之中心區域。孔洞眼247之存在及穿過孔洞 眼247之流動亦可減小吸收層228之中心區域之液體吸收率 且容許吸收層228在更大區域上吸收液體。因此,不僅限 制氡體及液體通過吸收層228之中心而且限制其通過可能 比分流層232更接近於組織部位i 〇8配置之其他層之中心。 因為氣體與液體均向外放射狀導向吸收層228之邊緣,所 以吸收性材料之更大部分暴露於來自組織部位1 〇8之液 體,且吸收層228之更大部分因此可用於容納或截留更大 量之液體。 吸收層228之更充分利用使得減壓敷料1 〇4可使用更長時 間而無須拋棄減壓敷料104。在減壓存在下,歸因於液體 可自組織部位108流出穿過減壓敷料1 〇4的速度,可能更需 要向吸收層228之邊緣分布氣體及液體。 仍參看圖2及圖3,第二歧管層236將減壓更均勻地分布 於分流層232之整個表面上。第二歧管層236可由能夠分布 或分配流體的任何材料製成。在一實例中,第二歧管層 236可由與第一歧管層224相同或相似的材料製成。在此實 例中,第二歧管層236可包括形成多孔洞發泡體的複數個 互連室。第二歧管層236亦可收集未被吸收層22 8吸收之來 自組織部位108的液體,諸如滲出液。第二歧管層236可具 有任何尺寸、形狀或厚度。 139019.doc •18- 200942281 在減壓敷料104之一實施例中,液-氣分離層240可為抑 制或防止液體通過液-氣分離層240的疏水性過濾器。或 者,液-氣分離層240可為基於重力之障壁系統,或包括親 水性表面以促使在流體流通過該表面時液體集中或另外自 流體流中分離的裝置。液-氣分離層240之其他實例可包括 燒結金屬、燒結耐綸(nylon),或能夠使液體自流體流中分 離的任何其他材料或裝置,或能夠以其他方式抑制或防止 液體通過而容許氣體通過的任何其他材料或裝置。 藉由抑制或防止液體流動,液-氣分離層240防止液體到 達管配接器116或導管112(參見圖1)。藉由防止液體到達導 管112,液-氣分離層240亦防止液體到達減壓源11 〇。 當液-氣分離層240經來自組織部位108之液體充滿、堵 塞、阻塞及/或濕潤時,液-氣分離層240可防止減壓通至組 織部位108。當鄰接液-氣分離層240的層經液體充滿時, 液-氣分離層240亦可防止減壓通至組織部位丨〇8。舉例而 言’若在一特定實施例中,吸收層228鄰接液-氣分離層 240,則吸收層228經液體充滿可促使液_氣分離層24〇防止 減壓通過。分流層232存在於液-氣分離層240與吸收層228 之間可延長液-氣分離層240阻止減壓通過的時段。 液-氣分離層240可具有任何尺寸、形狀或厚度。在一實 例中’出於對成本之考量,液_氣分離層240可小於減壓敷 料104中之其他層。液_氣分離層24〇亦可比管配接器ιΐ6及 覆蓋層244中之孔洞260寬,以使得來自組織部位1〇8之液 體無法到達管配接器i 16或孔洞26〇。 139019.doc •19· 200942281 減壓敷料104之覆蓋層244覆蓋減壓敷料i 〇4之至少一部 分。在一實施例中,覆蓋層244可完全覆蓋減壓敷料1〇4中 之多個層。在此實施例中,覆蓋層244可將減壓敷料1〇4緊 固於組織部位108或有助於將減壓敷料1〇4緊固於組織部位 108且有助於維持圍繞組織部位1〇8的密封。就此而言覆 蓋層244與密封層222兩者可共同作用以圍繞組織部位1〇8 形成进封。覆蓋層244亦可為減壓敷料i 〇4及組織部位i 〇8 提供保護性障壁。 在圖2及圖3所說明之實施例中,覆蓋層244可覆蓋並緊 固覆蓋層244與分流層232之間的組件及層。在此實施例 中,覆蓋層244可以黏著方式或以其他方式緊固於分流層 232。接著使可由與覆蓋層244相似之材料製成的分流層 232緊固於密封層222與在組織部位108處或附近之組織中 之任一者或兩者。此實施例中之分流層232將位於分流層 232下方的組件及層緊固並密封於組織部位108處。 在一實施例中,覆蓋層244可為黏著性覆布。覆蓋層244 之黏著性可歸因於製成覆蓋層244之材料之性質,或可歸 因於覆羞層244表面上所配置之黏著層。覆蓋層244之任何 刀可包括黏著劑。舉例而言,覆蓋層244之面向組織之 整個侧面可包括黏著劑。當具備黏著劑時,覆蓋層244可 黏著於管配接器116、組織部位1〇8周圍之組織或減壓敷料 1 04之任何層或組件之至少一部分。在另—實施例中,覆 蓋層244之面向組織之側面中僅周邊部分可包括黏著劑。 在此特定情況下,黏著劑所覆蓋之周邊部分可調適成黏著 139019.doc -20· 200942281 於分流層232、密封層222及組織部位108周圍之組織中之 任意者。 在另一實施例中’覆蓋層244可設計成覆蓋層244將不黏 著於濕表面,但將黏著於乾燥表面。因此,當施加覆蓋層 244時,在將覆蓋層244置放於乾燥組織部位(諸如乾燥的 傷口周圍區域)之前,覆蓋層244將不會黏附濕手套或濕 . 手,從而使得覆蓋層244更易操作。覆蓋層244可具有任何 尺寸、形狀或厚度。在一實例中,覆蓋層244可大於減壓 ® 敷料104之任何層或組件。在另一實例中,密封層222之尺 寸可大於覆蓋層244之尺寸。 減壓可經由覆蓋層244中之孔洞260施加於減壓敷料104 中之複數個層。在圖2及圖3之實例中,孔洞26〇展示為位 於覆蓋層244上之中心處。然而,孔洞26〇可位於覆蓋層 . 244上之任何處,包括鄰接於覆蓋層244邊緣之覆蓋層244 周邊部勿。雖然孔洞260展示為圓形,但孔洞26〇可具有任 • 何形狀。在一實例中,孔洞之形狀調適成與管配接器116 之一或多個部分的輪廓相吻合。 管配接器116提供導管112與減壓敷料1〇4之間的介面。 洋吕之’管配接器116與導管112流體連通以使得導管112 經由管配接器11 6將減壓傳遞至減壓敷料j 〇4及組織部位 108 ° 參看圖1及圖2,管配接器116可為調適成鄰接或部分配 置於孔洞260内的習知連接墊。或者,管配接器116可具有 低輪廓圓頂形狀’或管配接器116可呈任何其他形狀。管 139019.doc -21 · 200942281 配接器116之低輪廓可有助於保持減壓敷料1〇4緊致且便於 使用者使用。管配接器116包括圍繞管配接器i丨6之外周配 置的凸緣266。在圖2及圖3所說明之實施例中,覆蓋層244 靠近孔洞260之面向組織之側面可調適成黏著於凸緣266, 以使得管配接器116緊固於減壓敷料1〇4之至少一個層或級 件。 雖然圖2及圖3中未展示’但在一實施例中,減壓敷料 10 4包括;慮味器。該濾味器持留或防止氣味排出減壓敷料 104。濾味器可為可能包括炭的碳濾味器。在一實例中, 濾、味器為炭布。濾味器可定位於減壓敷料1〇4中之任何 處’諸如覆蓋層244與液-氣分離層240之間。 減壓敷料104可進一步包括指示劑(未圖示),以便當減 壓敷料104達到滿液體容納能力且需要自組織部位1 〇8移除 時向使用者發出警報。在一實施例中,指示劑可為在水分 存在下能夠改變視覺外觀或其他特徵的化學物質或其他物 質。舉例而言,指示劑可置放於覆蓋層244與吸收層228之 間的一層中’以使得當液體完全充滿吸收層且經吸收穿過 吸收層與指示劑接觸時’指示劑發生可見之顏色變化。在 一實施例中,指示劑可為液-氣分離層240之一部分。指示 劑亦可為定位於敷料中之任何處以指示特定區域中水分之 存在的單獨指示劑層之一部分。指示劑可與敷料中透明之 其他層配合以容許使用者觀察指示劑所處之位置。 雖然在圖3中,覆蓋層244、液-氣分離層240、歧管層 224及236、分流層232、吸收層228、密封層222及介面層 139019.doc •22· 200942281 220具有大體方形之形狀,但該等組件及本文中關於其他 實施例所揭示之其他層各自可具有向組織部位108提供適 菖減壓療法所需的任何形狀。舉例而言,該等組件及層可 為多邊形、矩形、圓形、橢圓形、不規則形狀、定製形狀 或任何其他形狀。 雖然減壓敷料104中之多個層已描述為「鄰接於」其他 層,但顯而易見,術語「鄰接於」可意謂該等層直接相鄰 或該等層可疋位成其間具有其他插入層。術語「層」通常 係指敷料中具有與敷料之其他部分或區域(亦即其他層)不 门之材料性貝或功能的部分或區域。然而術語「層」並不 意欲具有空間限制性。與一特定層相關的特性及功能可與 另一層之特性及功能組合,以便形成具有多種且不同特性 及功能的單層。更特定而言,可將例如兩個或兩個以上層 以物理或化學方式結合或組合以形成單層而不影響初始材 料特性或初始組件之功能。反之,本文中所述之敷料之一 特定層可分解為兩個或兩個以上各自具有相似特性或功能 的層。 更具體參看圖2’更詳細地描述減壓敷料1〇4之多個層之 特定配置。介面層220之面向組織之側面316展示為鄰接組 織部位108。在一實例中,介面層220之面向組織之侧面 316具有不平坦表面,當經由介面層22〇施以減壓時,該不 平坦表面促進組織部位108之肉芽形成。不平坦表面包括 在組織部位108上引起微應力及應變的纖維狀表面。 密封層222可配置於覆蓋層244與介面層220之間(包括吸 139019.doc -23· 200942281 收層228與介面層220之間)的任何處。在圖2之實例中,密 封層222配置於第一歧管層224與介面層22〇之間,以使得 密封層222之面向組織之側面327的一部分鄰接介面層 220。詳言之,形成孔洞231的密封層222内緣之面向組織 之側面鄰接介面層220。 密封層222亦包括伸展超出介面層22〇之邊緣的懸垂部分 329。懸垂部分329可調適成黏著或以其他方式接觸組織部 位108以便在組織部位108之一部分處形成密封。舉例而 吕,懸垂部分329可黏著或以其他方式接觸圍繞傷口部位 之傷口周圍區域以便在傷口部位處形成密封。 第一歧管層224亦可配置於減壓敷料1〇4中之任何處。在 實例中’第一歧官層224配置於介面層220與吸收層228 之間。在圖3之非限制性實例中,第一歧管層224配置於密 封層222與吸收層228之間。詳言之,第一歧管層224之面 向組織之側面336的一部分鄰接密封層222之孔洞23 1。在 此實例中,第一歧管層224之面向覆布之側面337鄰接吸收 層 228。 在圖2所說明之實施例中,吸收層228展示為配置於分流 層232與第一歧管層224之間。吸收層228之面向組織之側 面342鄰接第一歧管層224。吸收層228之面向覆布之側面 343鄰接分流層232。在一實例中,分流層232可配置於吸 收層228與覆蓋層244之間。分流層232之面向組織之側面 347鄰接吸收層228。分流層232之面向覆布之側面348鄰接 第二歧管層236。 139019.doc •24· 200942281 第二歧管層236可配置於吸收層228與覆蓋層244之間或 分流層232與覆蓋層244之間。在圖2中,第二歧管層236配 置於液-氣分離層240與分流層232之間。第二歧管層236之 面向組織之側面352鄰接分流層232。第二歧管層236之面 向覆布之侧面353鄰接液-氣分離層240。 液氣分離層240可配置於吸收層228與覆蓋層244之間或 第二歧管層236與覆蓋層244之間。在圖2中,液-氣分離層 240之面向組織之側面356鄰接第二歧管層236。疏水性過 濾器357之面向覆布之侧面357的一部分鄰接管配接器 116。 管配接器116之面向組織之侧面351鄰接液-氣分離層 240。此外’管配接器n6之一部分展示為自覆蓋層244之 孔洞中伸出。管配接器Π 6之凸緣266夾在覆蓋層244與液-氣分離層240之間,以使得覆蓋層244將管配接器U6緊固 於複數個層中之至少一層,諸如液-氣分離層24〇。如圖2 中所說明,液-氣分離層240可比覆蓋層244之孔洞260寬, 且第二歧管層236可比液·氣分離層240寬。 覆盖層244可覆蓋減壓敷料1 〇4之全部或一部分。舉例而 吕’覆蓋層244之端部可終止於密封層222之懸垂部分329 上之某一位置。如虛線380所示,覆蓋層244亦可終止於組 織部位108上之某一位置。 參看圖4,分流層232包括一定圖案之孔洞眼或其他孔洞 以便將減壓施加至吸收層228之部分(未圖示)。孔洞眼具有 不同直徑。更特定而言’孔洞眼45〇之直徑大於孔洞眼247 139019.doc -25^ 200942281 之直徑。在操作中’分流層232將更多減壓引導至方形吸 收層228之隅角以進一步增強吸收層228之傳輸能力,因為 隅角為在液體自吸收層228之中心向外放射狀擴散時吸收 層22 8中經液體填充之最後部分。 參看圖5及圖6,根據一說明性實施例之分流層545可由 接觸液體後膨脹的任何材料製成。舉例而言,分流層545 可由水凝膠製成。分流層545亦可包括水膠體、矽或聚矽 氧材料。分流層545包括孔洞眼547或其他孔洞。自每個孔 洞眼547延伸之每個箭頭之長度表示容許穿過孔洞眼之流 動或減壓之相對量。在圖5中,經由每個孔洞眼547會傳遞 等量之流動或減壓。 在有些減壓應用中’組織可在遠離敷料中心之區域產生 較多滲出液。在此等情況下,較大量之液體可通過定位於 主要滲出點上之一部分孔洞眼547。在圖6之實例中,主要 渗出點出現於較接近於孔洞眼648之處。因此,孔洞眼648 因與來自組織部位之液體接觸而顯示為較小、膨脹或大體 上閉合。孔洞眼648之節流引起優先穿過其餘孔洞眼547流 動’從而平衡敷料中相鄰吸收層中之流動。詳言之,如圖 6所示之分流層545之孔洞眼547所傳輸的減壓量大於孔洞 眼648所傳輸的減壓量。藉由以此方式平衡流動及減壓, 不論組織部位處主要滲出點之位置或吸收層吸收液體之模 式如何’吸收層(諸如圖2及圖3中之吸收層228)均可得以更 充分地利用。 參看圖7及圖8 ’根據一說明性實施例之分流層745包括 139019.doc •26· 200942281 複數個自分流層745之表面伸出且自分流層745之中心向外 周放射狀向外伸展以在其間形成或界定複數個通道787的 隆脊785。隆脊785可彎曲且可在分流層745之中心部分會 聚。分流器745之隆脊面鄰接吸收層(未圖示)以使得通道 787閉合以形成在分流層745之中心部分與外周之間放射狀 伸展的通路887及888(圖8)。在圖8中,各通路887展示為無 • 阻塞通路,且因此大體上等量之減壓自由流經各通路。然 而,在有些減壓應用中,來自組織部位108之液體(未圖示) © 填充且阻塞通路888。當組織部位之主要滲出點位於遠離 敷料(包括分流層745)之中心處時,此情形可能發生。因為 液體流經通路888的量大於流經通路887的量,因此通路 888經液體填充且經鄰接通路888之吸收層228充滿部分(如 ' 陰影部分889所示)阻塞。因此,如由分流層745上之箭頭 • 所示,經由通路887施加的減壓量大於經由阻塞通路888施 加的減壓量。接著通路887變成減壓及流體流動之優先路 徑直至鄰接於分流層745之吸收層228全部充滿。藉由以此 方式平衡流動,不論組織部位上主要滲出點之位置或吸收 層228吸收液體之模式如何,吸收層228均得以更充分地被 • 利用。 參看圖9,展示根據一說明性實施例之分流層945。分流 層945包括圍繞分流層945之外周的一定圖案之孔洞眼947 或其他孔洞。然而,與圖2及圖3之分流層232相比,分流 層945包括不包括孔洞眼947的部分93 1。部分93 1能夠與偏 離中心定位的管配接器(類似於管配接器116)對準。因為減 139019.doc -27- 200942281 壓係經由管配接器施加於敷料,所以孔洞眼直接存在於管 配接益下(甚至具有一或多個插入層)可使得超過所要部分 之減壓施加至鄰接於且位於管配接器下方之孔洞眼。消除 分流層945之鄰接於且位於管配接器下方之部分J中的孔 洞眼可經由其餘全部孔洞眼947施以減壓以將減壓更均勻 地分布至吸收層228。 雖然圖4-圖9之分流層已說明並描述為包括大體圓形之 孔洞眼’但分流層亦可包括具有任何形狀或尺寸之孔洞, 包括例如狹縫、裂縫、通道、穿孔洞或任何其他孔洞。或 者,可提供無孔洞之分流層,其尺寸訂定成周長尺度及/ 或表面積小於吸收層。長度或寬度小於吸收層之長度或寬 度的分流層將確保流體圍繞分流層之周緣流動,從而具有 與將孔洞置放於靠近較大分流層之邊緣處相同的效果。 參看圖10 ’展示根據一說明性實施例之減壓敷料丨〇〇〇。 減壓敷料1000類似於圖2及圖3之減壓敷料1〇4。所示減壓 敷料1000不具有圖2及圖3之管配接器116或覆蓋層244,但 包括吸收層228及分流層232。減壓敷料1000進一步包括 熱/水分交換(HME)發泡體1015,其為圖2及圖3中之介面層 220之非限制性實例。HME發泡體1015可為自組織部位1〇8 芯吸液體的親水性發泡體。HME發泡體1 〇 15亦可將減麼分 布至組織部位。在一實例中,HME發泡體1〇15之面向組織 之側面具有不平坦表面,以便在經由HME發泡體1〇15施以 減壓時促進組織部位108處肉芽形成。圖1〇中之各箭頭表 示當向減壓敷料1000施以減壓時,氣體或液體任一者或兩 139019.doc • 28· 200942281 者之流動。箭頭說明分流層232如何促進氣體及液體在整 個減壓敷料1000中之分布以更有效地利用吸收層228。舉 例而言,箭頭展示,分流層232之存在促使液體向外放射 狀吸向吸收層228之邊緣以更充分地利用吸收層228之吸收 能力。 ' 減壓敷料1000亦包括鄰接於分流層232配置在與第一吸 • 收層228相對側上的第二吸收層1040及鄰接於第二吸收層 1040之相對側配置的第二HME層1041。第二HME層1041可 β 為開室式及/或親水性發泡體。在一實例中,HME層1041 係由與HME發泡體1015相同的材料製成。來自組織部位 108之液體(未圖示)經吸收且吸入HME發泡體1015中且轉 移至吸收層228。液體經吸收層228吸收,且穿過分流層 ' 232之孔洞眼247,從而將液體展布且使得吸收層228得到 較高利用。在使用水凝膠分流層(諸如圖5中之分流層545) 替代分流層232的非限制性實例中,孔洞眼247處會發生膠 凝阻塞以致液體被迫在吸收層228中四處移動且分布。第 φ 二吸收層1040進一步吸收流經分流層232的任何液體,同 時第二HME層1041將減壓分配於整個第二吸收層1040上。 • 在有些情況下,當經由減壓敷料1000施以減壓時,第二 . HME層1041可經受壓縮力。不論此等壓縮力如何,第二 HME層1041仍可含有容許第二HME層1041將減壓傳遞至減 壓敷料1000之其他部分的開放壓力通道。過濾層(諸如液-氣分離層240)可定位於HME層1041上以抑制或防止液體離 開減壓敷料1000。 139019.doc -29- 200942281 參看圖11及圖12’提供可用於減壓敷料(諸如圖i_3之減 壓敷料104)的覆布1125或覆蓋層。覆布1125包括彈性部分 1110。彈性部分111〇位於覆布1125中心。彈性部分111〇可 由任何彈性材料製成。此外,雖然圖11及圖12未展示彈性 部分1110上之孔洞,但彈性部分1110可包括孔洞,諸如圖 2中之孔洞260。孔洞可位於彈性部分丨丨丨〇上之任何處。彈 性部为1110在黏結區域112 0與周邊部分1 Π 5黏結。黏結區 域1120處之黏結可使用任何黏結技術形成。舉例而言彈 性部分1110可在黏結區域112〇膠黏於周圍部分1115或以其 他方式黏著於周邊部分1115。 周邊部分1115可由任何材料(包括彈性材料或非彈性材 料)製成。在一實例中,周圍部分丨丨丨5包括孔洞。周邊部 分1115之面向組織之側面1122可包括黏著劑,從而可使用 覆布1125覆蓋並緊固一或多個層,諸如減壓敷料1〇4之 層。在另一實施例中,彈性部分111〇與周邊部分ιιΐ5可由 相同材料製成且彼此相連,以使得彈性部分丨丨1〇與周邊部 分1115在黏結區域112〇處無需黏結。 如圖12中所說明,彈性部分111〇可膨脹至複數個位置, 由實線所示之未膨脹位置膨脹至由虛線所示之膨脹位置 1110a。如使用覆布1125的減壓敷料經液體填充時,彈性 部分_移至膨脹位置111Ga。覆布1125移至耗位置 1110a之能力容許減壓敷料中存在容納來自組織部位忉8之 液體的額外空間(未圖示)。 作為具有彈性部分之覆布之替代物,覆布1125亦可由非 139019.doc -30- 200942281 彈性材料製成,當流體收集於敷料中時,此非彈性材料能 ^塑性變形至膨脹位置。覆布1125亦可包括彈性材料與非 彈性材料之組合,且膨脹可基於材料之彈性變形盘塑 形。 '、 參看圖13,覆布1325或覆蓋層包括位於覆布1325中心的 褶狀部分1310。褶狀部分⑽可由彈性材料或非彈性材料 • 製成。褶狀部分1310亦包括一或多個皺褶1312或隆脊。皺 冑可位於褶狀部分131G之任何側或所有側。此外,雖然圖 13展不在褶狀部分131〇之每一側上有一皺褶,但褶狀部分 1310之每一側可包括任意數目之皺褶,從而可形成波紋管 樣結構。當液體容納於下伏減壓敷料中時,褶狀部分Η⑺ 之褶狀構造容許褶狀部分131〇膨脹。 圖11-13之覆布1125及1325能夠膨脹以適合減壓敷料中 . 之流體收集及容納。亦為重要的是應注意,覆布1125及 1325能夠在膨脹之前、膨脹期間及膨脹之後維持敷料中之 減壓。 參看圖14及圖15,說明根據說明性實施例之介面層1400 及1500。介面層1400及15〇〇為包括半切穿孔洞(kiss-cut ?6|^〇1*此〇11)1405及15〇5以便容易地撕裂介面層14〇〇及i5〇〇 及訂定其尺寸從而用於敷料(諸如減壓敷料1〇4)中的可撕裂 薄片發泡體材料。在一實例中,當介面層14〇〇及15〇〇經半 切時’切模穿過發泡體材料厚度之大部分而非全部。由此 提供撕裂所沿的弱化路徑,同時仍容許發泡體維持形狀。 在圖14中,半切穿孔洞1405為一系列同心圓。可沿任一同 139019.doc •31 · 200942281 心圓撕裂適當尺寸之介面層。在圖15中,半切穿孔洞i5〇5 為連續螺旋樣穿孔洞。在用於敷料之前,可視需要沿此連 續穿孔洞撕裂半切穿孔洞1505以訂定介面層尺寸。 /半切穿孔洞剛及测提供可撕裂介面層所沿的弱化路 徑。當介面層剛及测之一部分用於敷料中時,介面層 仍可保留一些穿孔洞。然而’不論是否具有此等穿孔洞, 介面層仍能夠維持所要形狀且有效地執行本文中所述之介 面層之功能。 參看圖16,展示曲線圖1600,曲線圖16〇〇展示減壓敷料 之例示性特徵。曲線圖16〇〇說明在以約2毫升/小時添加流 體之減壓敷料之介面層處所量測之壓力降與時間之關係。 詳言之,曲線圖1600展示在約8 cm2且包括hme發泡體之 敷料之介面層處所量測之壓力中在測試期間第二超吸 收纖維層敷料安裝於大管上。整個測試期間施加於敷料的 減壓怪定為125 mmHg。隨著時間逝去且敷料經流體填 充’介面層t壓力最終在敷料不#能夠適當分配減壓時下 降。曲線圖1600僅表示一種特定減壓敷料之特徵且本文 中所述之敷料之其他說明性實施例可呈現與曲線圖16〇〇中 所示之特徵不同的特徵。 參看圖17,根據一說明性實施例之敷料17〇〇包括介面層 1715。與圖2中之介面層22〇相比,相對於敷料中之其他 層,介面層1715具有較大尺寸。敷料17〇〇包括位於組織介 面層171 5上的吸收層228及位於吸收層228上的分流層 232»與減壓敷料1〇4相比,敷料17〇〇包括位於分流層a] I390l9.doc -32- 200942281 上的另一吸收層1740 〇吸收層1740類似於吸收層228。可 添加吸收層1740以增強敷料1700之吸收性。吸收層1740亦 可用於捕獲移出或逸出吸收層228的液體。 敷料1700包括位於吸收層174〇上的第二歧管層236及位 於第二歧管層236上的液-氣分離層240。敷料1700亦包括 位於液-氣分離層240上的密封層1724(類似於圖2之密封層 ' 222) °密封層1724具有圓孔洞1730,但圓孔洞1730可呈任 何形狀。敷料1700亦可包括管配接器174〇及覆蓋層244。 ❹ 管配接器1740可呈低輪廓圓頂形狀或任何其他形狀。 在一實施例中’調適成接觸組織部位之敷料17〇〇之組件 為組織介面層1715、密封層1724及覆蓋層244。然而,敷 料1700之組件之尺寸可訂定為使得任何組件可接觸組織部 位。 本文中所述之減壓敷料之說明性實施例可含有分流層以 確保當吸收層吸收流體時維持均勻的壓力分布。分流層亦 φ 促進敷料中吸收性材料之有效利用。說明性實施例亦可含 有防止敷料容許液體(諸如滲出液)進入導管且有助於確保 壓力分布的多孔洞疏水性過濾器。說明性實施例中之敷料 之構造及層之順序有助於確保敷料之最佳吸收性以及減壓 至組織部位之傳遞。 當前傷口敷料設計成可吸收液體以維持潮濕的傷口環 境,同時將浸潤之風險降至最低,但不適於適當分配減 壓。當前不與減壓一起使用的當前敷料通常不會向組織部 位傳輸壓力。此等當前敷料設計成僅吸收流體且以常規方 139019.doc -33· 200942281 式改變。說明性實施例中所述之敷料調適成在減壓存在及 不存在下提供療法及更強吸收能力,且可應用於多種傷 口,包括低嚴重度傷口及低滲出性傷口。說明性實施例中 所述之敷料將容許減壓組織療法而不影響敷料吸收性。 在諸如分流層之組件所提供之分流作用不存在的情況 下’液體可經吸收層吸收且集中於渗出點周圍的限制區域 内。由此導致大量吸收層未使用。舉例而言,當將125 mmHg之減壓源連接至減壓敷料時,吸收性材料可釋放一 些所吸收之液體’此液體將繞過吸收區域之其餘部分且直 接吸入連接減壓源與敷料的導管内。此時,敷料可停止吸 收更多的液體’且當液體進入導管時,敷料將減壓傳輸至 組織部位的能力減弱。此外,此情形可能在已吸收僅僅一 部分目標流體量時發生。然而’藉由使用分流層及本文中 所述之其他層,可提高吸收層之效率以使得減壓敷料能夠 吸收更多液體並在更長時段内分配減壓。 本文中所述之減壓敷料之組件係以非限制性空間組態說 明’此空間組態可根據實施而修改。雖然該等圖式以特定 次序展示減壓敷料之組件,但該等組件可根據實施而具有 任何次序。類似地,包括或不包括任何特定組件可根據特 定應用而改變。 具有整合泵之敷料 圖1-17中之減壓敷料及組件已描述為調適成連接至敷料 外部之減壓源。然而,本文中所述之減壓敷料亦能夠併有 整合泵,亦即定位於敷料之層内或層之間以經由敷料之層 139019.doc -34- 200942281 將減壓傳遞至組織部位的泵。 參看圖18,根據一說明性實施例之減壓治療系統18〇〇包 括定位於患者之組織部位18〇8處的減壓敷料18〇4。減壓敷 料1804包括整合於減壓敷料18〇4内的減壓泵181〇。除減壓 泵1810外,其他組件亦可整合於敷料内,該等組件包括 (不限於)感測器、處理單元、控制單元、警報指示器、記 憶體、資料庫、軟體。此外,減壓敷料18〇4可包括容許敷 料1804内之組件與敷料18〇4外之組件之間流體流通的介面 (無線或有線介面)。在一非限制性實例中,介面可為USB 埠。外部組件可包括(不限於)控制單元、顯示器單元、電 池充電器,及進一步便於向组織部位丨8〇8施以減壓治療的 使用者介面。由減壓泵將減壓傳遞至減壓敷料丨8〇4及組織 部位108可藉由維持滲出液自組織部位排出來促使新組織 生長’從而增加至組織部位周圍之組織的血液流動,且在 組織部位處形成微應變。 參看圖19及圖20,減壓敷料18〇4包括調適成定位於組織 部位1808之介面層1920及圍繞組織部位1808密封減壓敷料 18 04的密封層1922。第一歧管層1924定位成與介面層1920 流體連通以將減壓分布至介面層1920及組織部位1808。吸 收層1928定位成與第一歧管層1924流體連通以自第一歧管 層1924、介面層1920及組織部位1808中之至少一者吸收液 體。分流層1932鄰接於吸收層1928定位。第二歧管層1936 定位成與分流層1932流體連通,且液-氣分離層194〇鄰接 於第二歧管層1936定位。覆蓋層1944或覆布鄰接於第二 139019.doc 35- 200942281 液-氣分離層1940定位。指示劑及濾味器亦可定位於減壓 敷料1804内。 減壓敷料1804之多個層在形狀、尺寸、定位及功能上與 本文中所述之任何其他減壓敷料之層類似。除以上列出之 敷料1804之層外,減壓敷料18〇4亦可包括可整合於敷料 内、液-氣分離層1940與覆蓋層1944之間的泵18丨〇。泵 1 8 10可為足夠小且輕以使得整合式減壓敷料丨8 〇 4能夠維持 於組織部位1808上的微型泵。此外,泵181〇之尺寸及重量 應使得整合式減壓敷料1 8〇4不牽拉或以其他方式不利地影 響組織部位1808。在一實施例中,泵1810可為類似於國際 專利申請案第卩(:17〇32006/001487號(以|〇 2006/111775公 開)中所述,具有壓電致動器的盤式泵,該案以引用方式 併入本文中。在一替代實施例中,泵181〇可為用於抽吸多 種流體的蠕動泵。應瞭解,可使用替代泵技術且可使用旋 轉、線性或其他組態之泵。 果18 10可用於形成足夠的減壓以便對於傷口療法而言具 有「治療作用」。在一實施例中,泵181〇具有足以使得減 壓治療能夠得以連續施加的流動、真空及操作壽命特徵。 流篁範圍可介於約5_1〇〇〇 ml/min之間,真空度範圍可介於 約50-200 mmHg之間,且連續操作壽命可持續2〇小時以 上。應瞭解,視整合式減壓敷料18〇4之組態、傷口尺寸、 傷口類型或其他因素而定,可使用替代範圍。在一實施例 中,視需要多個泵可定位於單個敷料中以傳遞增加之流速 或真空度。或者,使用者或醫學從業者可掌握對具有不同 139019.doc -36· 200942281 操作能力及規格之泵之選擇以便針尉特定組織部位優化系 與敷料之組合。 泵mo配置於敷料内以避免導管及外部罐收集傷口滲出 液。栗mo可包括閥1950或輸出口以將減壓敷料刪中之 空氣或廢氣釋出。若使用閥1950,則閥195〇可與覆蓋層 m4之孔洞觸流體連通’或可定位於覆蓋層1944之孔洞 I960内。在圖18_2〇所說明之實施例中,泵刪之間或輸 參 出口取向於遠離疏水性過滤器之方向以免將空氣添加至傷 口敷料中。空氣經由覆蓋層1944中之孔洞觸排出,覆蓋 層1944可包括單向閥。或者,只要不影響覆蓋層1944維持 減壓之能力,則可經由覆蓋層1944之透氣部分將空氣或其 他氣體排出。 、 當敷料中使賴電驅動泵時,與㈣聯的M電㈣器可 以不同頻率驅動以充當蜂鳴器或振動警報系統。邀報系統 可用於警告個者存在警報狀況,諸如敷料中存在;贫漏、 如由感測器所量測之減壓變化、如可由指示劑所指示之敷 料已吸收最大液體容量之指示,或一或多個層不再有效分 配減壓之指示。 > 電子控制器2024可用於控制泵181〇之操作。電子控制器 搬4可為類比型及/或數位型且組態有調節器(未圖示)以調 節系蘭操作之速度或工作週期。此外,電子控制器2〇24 可組態有接收來自感測器或開關(未圖示)之感測信號的控 制器(未圖示)。感測||可配置於整合式減壓敷料18〇4内以 感測參數,諸如壓力、溫度、水分、化學性質、氣味或可 139019.doc •37- 200942281 用於操縱及控制泵1810的任何其他參數。在一實施例中, 電子控制器2024包括電腦處理器。或者,電子控制器2〇24 可包括可程式化閘陣列。此外,電子控制器2〇24可由類比 電子組件形成。應瞭解,電子控制器2〇24可包括任何形式 之數位及/或類比組件以執行如本文中所述之功能。 如此項技術中所瞭解,執行減壓傷口治療時存在四種有 關的基本參數,包括⑴低壓;(ii)過度洩漏;(ϋ〇吸收層之 位準及(iv)電池狀態。因此,電子控制器2〇24可包括可用 於監測四種基本參數之每一者且使用揚聲器(未圖示)、振 動器(未圖示)或照明裝置(未圖示)(諸如發光二極體(led)) 產生警報k號(例如尚音調的嗶嗶聲、振動或光)以告知醫 學專業人員、患者或豕庭成員參數超出安全範圍的電子設 備。舉例而言,若傷口部位處之壓力低於治療位準,則可 產生連續音調。另舉例而言,若吸收層丨928被充滿,則可 產生連續°畢°畢聲。再者’若電池降低至一定電壓位準以 下’則可產生不同頻率且/或可開啟LED。可建立多種不同 警報信號以告知醫學專業人員採取特定行動。 電池2026可用於向泵1810及電子控制器2024提供電力。 電池2026可具有任何尺寸及形狀組態且由任何材料(諸如 聚合物)製成以適合如上所述之整合式減壓敷料18〇4之重 量及尺寸。在一實施例中,電池2026可為可再充電式電 池。在另一實施例中,電池2026可配置於整合式減壓敷料 1 804内或外且可以容易更換或再充電之方式定位。在一實 施例中,電池2026可配置有電壓位準感測器(未圖示),此 139019.doc -38· 200942281 感測器由電子控制器2024監控以便測定低功率位準。在一 實施例中’電池2026可與泵1810直接連接。或者,電池 2026可連接至電子控制器2024,電子控制器2024利用來自 電池2026之電力驅動泵1810。電子控制器2〇24可提供連續 電力、調變電力(諸如脈衝寬度調變(PWM)信號)以驅動泵 1810。 密封層1922可黏著於或以其他方式連接至覆蓋層1944, 覆蓋層1944用於遮蓋或覆蓋整合式減壓敷料18〇4 ^密封層 1922可包括侵襲性或醫用級黏著材料,此材料具有足以與 患者傷口周圍之皮膚形成真空密封的強黏著性。密封層 1922可為具有開口 2032的條帶,開口 2032略大於疏水性過 濾器2020或其他層之幾何參數以使得覆蓋層2〇3〇可接觸患 者傷口部位周圍之皮膚。覆蓋層2030可能對流體(空氣及 液體)具有不透性。在一實施例中,覆蓋層2〇3〇包括閥 2034以使付來自泵181〇之廢乳能夠自整合式減壓敷料1804 中排出。閥2034可為單向閥以將經由覆蓋層2030進入整合 式減壓敷料1804内的流體減至最少。 在另一實施例中,密封層1922可黏著於分流層1932且分 流層1932黏著於覆蓋層1944以形成上敷料部分及下敷料部 分。上敷料部分可包括覆蓋層1944、泵181〇及相關組件、 液·氣分離層1940、第二歧管層1936及分流層1932。下敷 料4分可包括吸收層1928、第一歧管層1924、密封層1922 及介面層1920。在一實施例中,減壓敷料可組態成容許一 旦下敷料部分已吸收最大容量之流體即更換該敷料。下敷 139019.doc •39· 200942281 料部分更換之後,上敷料部分可再使用。由此容許泵1810 之多次使用,同時可更換敷料之可拋棄部分。在另一實施 例中,泵1810、電子控制器2024及電池2026可自敷料中移 除以便再使用且敷料中之其餘層可更換。在另一實施例 中’僅可更換吸收層1928。在另一實施例中,僅可更換吸 收層1928及介面層1920。 炭過濾器2036可用於整合式減壓敷料18〇4中以減少傷口 部位所產生之氣味及自整合式減壓敷料1804所散發之氣 味。炭過濾器2036可配置於泵1810之閥或其他出氣口之 上’以將來自泵18 10之廢氣過濾後再自整合式減壓敷料 1804釋出。應瞭解炭過濾器2〇36可替代地組態且配置於泵 1810之上或之下。再者,除可將炭整合於整合式減壓敷料 1804中所用之任何或全部不同層内而非使用炭過濾器。 由上文應顯而易見,已提供具有顯著優點之發明。雖然 本發明僅以其幾種形式展示,但其並不僅限於此,而易於 在不背離其精神下作出各種修改及變更。 【圖式簡單說明】 圖1說明根據一說明性實施例之減壓治療系統之透視 圖該減壓冶療系統具有定位於組織部位處之敷料; 圖2描繪沿2-2獲取之圖丨之敷料的橫截面前視圖; 圖3說明圖1之敷料之分解透視圖; 圖4描繪圖3之敷料之分流層的俯視圖; 圖5說明根據一說明性實施例之分流層之俯視圖; 圖6描繪圖5之分流層之俯視圖; 139019.doc 200942281 圖7說明根據一說明性實施例之分流層之透視圖; 圖8描繪圖7之分流層之俯視圖; 圖9說明根據一說明性實施例之分流層之俯視圖; 圖10描繪根據一說明性實施例之減壓敷料之分解透視 圖; 圖11說明用於根據一說明性實施例之減壓敷料之覆布的 _ 俯視圖; 圖12描繪圖11之覆布之橫截面前視圖; 瘳 圖13說明用於根據一說明性實施例之減壓敷料之覆布的 橫截面前視圖; 圖14描繪用於根據一說明性實施例之減壓敷料之組織介 面層的俯視圖; 圖15說明用於根據一說明性實施例之減壓敷料之組織介 • 面層的俯視圖; 圖16描繪展示根據一說明性實施例之向組織部位施以減 Φ 壓之減壓治療系統的真空壓力相對於時間之曲線圖; 圖17說明根據一說明性實施例之減壓治療敷料之分解透 視圖; . '18騎根據—說明性實施例之減壓治療系統之透視 • w ’该減壓治療系統具有在組織部位處定位有整合果的敷 料; 圖19說明沿19_19獲取之圖18之敷料及果的橫截面前視 圖;及 圖20描繪圖18之敷料及泵之分解透視圖。 139019.doc 200942281 【主要元件符號說明】 100 減壓治療系統 104 減壓敷料 108 組織部位 110 減壓源 112 導管 116 管配接器 220 介面層 222 密封層 224 第一歧管層 228 吸收層 231 孔洞/開口 232 分流層 236 第二歧管層 239 多向箭頭 240 液-氣分離層 244 覆蓋層 247 孔洞眼 260 孔洞 266 凸緣 450 孔洞眼 545 分流層 547 孔洞眼 648 孔洞眼 139019.doc -42- 200942281 745 785 787 887 888 889 931 945 參 947 1000 1015 1040 1041 1110 1110a 1115 鲁 1120 1122 分流層 隆脊 通道 通路 通路 陰影部分 分流層945之部分 分流層 孔洞眼 減壓敷料 熱/水分交換(HME)發泡體 第二吸收層 第二HME層 彈性部分 膨脹位置 周邊部分 黏結區域 周邊部分1 Π 5之面向組織之 側面 1125 覆布 1310 褶狀部分 1312 皴褶 1325 覆布 1400 介面層 139019.doc • 43- 200942281 1405 半切穿孔洞 1500 介面層 1505 半切穿孔洞 1600 曲線圖 1700 敷料 1715 介面層/組織介面層 1724 密封層 1730 圓孔洞 1740 吸收層/管配接器 1800 減壓治療系統 1804 減壓敷料 1808 組織部位 1810 減壓泵 1920 介面層 1922 密封層 1924 第一歧管層 1928 吸收層 1932 分流層 1936 第二歧管層 1940 液-氣分離層 1944 覆蓋層 1950 閥 1960 孔洞 2024 電子控制器 139019.doc -44- 200942281 2026 2036 LI、 W1 ' 電池 炭過遽器 L2、L3 長度 W2 ' W3 寬度 ❹ 鲁 139019.doc -45-
Claims (1)
- 200942281 七、申請專利範圍: 1 · 一種用以將減壓治療施用予一組織部位之減壓敷料,該 減壓敷料包含: 一介面層,其調適成定位於該組織部位處; 一吸收層’其與該介面層流體連通,以自該介面層及 -該組織部位中之至少一者吸收液韹; -一栗’其與該吸收層流體連通,以將減壓傳遞至該組 織部位; ® 一覆蓋層’其定位於該泵、該吸收層及該介面層上, 以將該減壓維持於該組織部位處;及 一液_氣分離層,其定位於該吸收層與該泵之間,以抑 制液體進入該泵内。 2.如凊求項1之減壓敷料,其中該介面層係為疏水性。 請求項1之減屢敷料’其中該吸收層包括超吸收纖 維。 如請求項1之減壓敷料,甘 ^ . A ^ n 其進一步包含定位於該覆蓋層 與該組織部位處或附近組織之間的密封層 如請求項1之減壓敷料, 科/、中該泵為壓電驅動式微型 6. 7. 8. 如請求項1之減壓敷料 且操作性連接至該泵的 如請求項1之減壓敷料 洞,以容許自該泵中排 如請求項1之減壓敷料 ,其進一步包含定位於該敷料内 電池及電子控制器。 ,其進一步包含該覆蓋層中之孔 出氣體。 ,其進一步包含與該泵之輸出口 139019.doc 200942281 流體連通的濾味器。 9. 一種用以將減壓治療施用予組織部位之減壓敷料,該減 壓敷料包含: 一介面層’其調適成定位於該組織部位處; 吸收層’其與該介面層流體連通,以自該介面層及 該組織部位中之至少一者吸收液體; 一泵’其與該吸收層流體連通,以將減壓傳遞至該組 織部位; 一分流層,其位於該吸收層與該泵之間,該分流層包 ❹ 括複數個孔洞,以將該減壓自該泵傳輸至該吸收層; 覆蓋層,其定位於該泵、該分流層、該吸收層及該 ”面層上,以將該減壓維持於該組織部位處;及 一液氣分離層,其定位於該分流層與該泵之間,以抑 - 制液體進入該泵内。 10·如請求項9之減壓敷料,其中該介面層係為疏水性。 如。月求項9之減壓敷料’其中該吸收層包括超吸收纖 維。 ❹ 12. 如請求項9之減壓敷料,其中該分流層之表面積大於該 覆蓋層之表面積。 13. 如請求項9之減壓敷料,其中: 該分流層之表面積大於該覆蓋層之表面積;且 該覆蓋層之至少一部分係黏著性地耦合至該分流層, s刀/爪層之至少一部分係耦合至該組織部位周圍之组 織。 、 139019.doc -2 - 200942281 14·如吻求項13之減壓敷料,其進一步包含定位於該分流層 及該組織部位周圍之組織之間的密封層。 15. 如請求項9之減壓敷料,其中該分流層之孔洞係定位靠 近該分流層之至少一個周緣。 16. 如請求項9之減壓敷料,其中該等孔洞中之至少一個孔 洞係大於該等孔洞中之另一孔洞。 17. 如請求項9之減壓敷料,其中該等孔洞中之至少一個孔 洞係裳組成與水接觸後會變較小。 18. 如請求項9之減壓敷料,其中該分流層包括複數個位於 該分流層之表面上之隆脊,以界定複數個介於該等隆脊 之間的通道。 19. 如請求項9之減壓敷料’其中該分流層使得該吸收層之 吸收能力更充分地被利用。 2〇.如°月求項9之'咸壓敷料’ *中該分流層增加該吸收層能 夠分布減壓的時間量。 ❹21.如請求項9之減壓敷料,其中該分流層係為透氣性。 22.如明求項9之減壓敷料,其中該泵為壓電驅動式微型 泵。 • 23.如請求項9之減壓敷料’其進一步包含定位於該敷料内 ’ 2操作性連接至該泵的電池及電子控制器。 24. 如請求項9之減壓敷料,其進一步包含該覆蓋層中之孔 洞,以容許自該泵中排出氣體。 25. 如請求項9之減壓敷料,其進一步包含與該系之輸出口 流體連通的濾味器。 139019.doc 200942281 26. —種用以將減壓治療施用予組織部位之減壓敷料,該減 壓敷料包含: 一介面層’其調適成定位於該組織部位處; 一吸收層,其與該介面層流體連通,以自該介面層及 該組織部位中之至少一者吸收液體; 一分流層’其鄰接於該吸收層,該分流層係由大體上 不透氣的材料形成’該分流層包括複數個與該吸收層流 體連通的孔洞以增加該吸收層能夠分布減壓的時間量; 一栗,其與該分流層之複數個孔洞流體連通,以將減 壓傳遞至該組織部位; 一覆蓋層’其定位於該泵、該分流層、該吸收層及該 介面層上,以將該減壓維持於該組織部位處;及 一液-氣分離層’其定位於該分流層與該泵之間,以抑 制液體進入該泵内。 27. 如請求項26之減壓敷料,其中該介面層係為疏水性。 28. 如請求項26之減壓敷料,其中該吸收層包括超吸收纖 維。 29. 如請求項26之減壓敷料,其進一步包含定位於該覆蓋層 與該組織部位周圍之組織之間的密封層。 30. 如請求項26之減壓敷料,其中該分流層之表面積係大於 該覆蓋層之表面積。 3 1 ·如請求項26之減壓敷料,其中: 該分流層之表面積大於該覆蓋層之表面積;且 s玄覆蓋層之至少一部分係黏著性地輕合至該分流層, 139019.doc 200942281 且該分流層之至少一部分係耦合至該組織部位周圍之組 織。 32·如請求項31之減壓敷料,其進一步包含定位於該分流層 及該組織部位周圍之組織之間的密封層。 33.如請求項26之減壓敷料,其中該分流層之孔洞係定位靠 近該分流層之至少一個周緣。 • 34.如請求項26之減壓敷料,其中該等孔洞中之至少一個孔 洞大於該等孔洞中之另一孔洞。 ® 35.如請求項26之減壓敷料,其中該等孔洞中之至少一個孔 洞係裝組成與水接觸後會變較小。 36·如請求項26之減壓敷料’其中該分流層包括複數個位於 該分流層之表面上之隆脊,以界定複數個介於該等隆脊 ' 之間的通道。 3 7.如請求項26之減壓敷料,其中該分流層使得該吸收層之 吸收能力更充分地被利用。 ❿ 38.如請求項26之減壓敷料,其中該分流層增加該吸收層之 吸收效率。 39.如請求項26之減壓敷料,其中該泵為壓電驅動式微型 • 泵。 . 40.如請求項26之減壓敷料’其進一步包含定位於該敷料内 且操作性連接至該泵的一電池及電子控制器。 41. 如請求項26之減壓敷料’其進一步包含該覆蓋層中之孔 洞,以容許自該泵中排出氣體。 42. 如請求項26之減壓敷料,其進一步包含與該泵之輪出口 139019.doc 200942281 流體連通的濾味器。 43 . —種用以將減壓治療施用予組織部位之減壓敷料,該減 壓敷料包含: 一介面層,其調適成定位於該組織部位處; 一第一歧管層,其與該介面層流體連通; 一吸收層’其與該第一歧管層流體連通,以自該第一 歧管層、該介面層及該組織部位中之至少—者吸收液 體; 一分流層,其係由大體上不透氣之材料形成,該分流 層包括複數個與該吸收層流體連通的間隔孔洞; 一第二歧管層’其與該分流層流體連通; 一泵,其與該第二歧管層流體連通,以將減壓傳遞至 該組織部位; 一覆蓋層,其定位於該泵、該第二歧管層、該分流 層、該吸收層、該第一歧管層及該介面層上,以:該二 壓維持於該組織部位處;及 -液-氣分離層’其定位於該第二歧管與該泵之間以 抑制液體進入該泵内。 44.如請求項43之減壓敷料,其中該介面層係、為疏水性。 45·如請求項43之減壓敷料,其中該^層包括超吸㈣ 維。 46.如請求項43之減壓敷料,其進一步句 — ^ 3疋位於該組織部 位周圍之組織及該敷料中至少一個 U其他層之間之密封 層,以助於將減壓維持於該敷料中。 139019.doc 200942281 47_如請求項43之減壓敷料’其中該分流層之表面積大於該 覆蓋層之表面積。 48. 如請求項43之減壓敷料,其中: 該分流層之表面積大於該覆蓋層之表面積;且 該覆蓋層之至少一部分係黏著性地麵合至該分流層, 且该分流層之至少一部分係輕合至該組織部位周圍之組 • 織。 49. 如請求項48之減壓敷料’其進一步包含定位於該分流層 ® 及該組織部位周圍之組織之間的密封層。 50. 如請求項43之減壓敷料’其中該分流層之孔洞係定位靠 近該分流層之至少一個周緣。 51. 如請求項43之減壓敷料,其中該等孔洞為小洞。 52. 如s青求項43之減壓敷料’其中該等孔洞中之至少一個孔 洞大於該等孔洞中之另一孔洞。 53 ·如請求項43之減壓敷料,其中該等孔洞中之至少一個孔 洞係裝組成與水接觸後會變較小。 54. 如請求項43之減壓敷料’其中該分流層包括複數個位於 該分流層之表面上之隆脊’以界定複數個介於該等隆脊 •之間的通道。 55. 如請求項43之減壓敷料,其中該分流層使得該吸收層之 吸收能力更充分地被利用。 56. 如請求項43之減壓敷料,其中該分流層增加該吸收層能 夠分布減壓的時間量。 57. 如請求項43之減壓敷料,其中該泵為壓電驅動式微型 139019.doc 200942281 泵。 58. 如請求項43之減壓敷料,其進一步包含定位於該敷料内 且操作性連接至該泵的一電池及電子控制器。 59. 如請求項43之減壓敷料,其進一步包含該覆蓋層中之孔 洞’以容許自該泵中排出氣體。 60. 如請求項43之減壓敷料,其進一步包含與該泵之輸出口 流體連通的濾味器。 61. —種用以收集定位於組織部位處之敷料中液體之方法, 該方法包含: 利用定位於該敷料内之果產生減壓; 自該組織部位吸收液體且將該液體容納於該敷料 中;及 防止該液體進入該泵内。 62. 如請求項61之方法,其進一步包含: 將該減壓維持於該敷料内。 63. 如请求項61之方法,其進一步包含: 將來自該泵之氣體排出該敷料外。 64. —種調適成將減壓分布至組織部位之減壓敷料,該敷料 包含: 介面層’其調適成定位於該組織部位處; 吸收層,其與該介面層流體連通,以自該介面層及 該組織部位中之至少一者吸收液體; 一泵,其與該吸收層流體連通,以將該減壓傳遞至該 組織部位; I390l9.doc 200942281 一分流層,其定位於該吸收層與該泵之間’該分流層 係由大體上不透氣的材料形成,該分流層具有小於該吸 收層之表面積的表面積,以便引導圍繞該分流層之至少 一個周緣流動;及 一覆蓋層’其定位於該分流層上,以將該減壓維持於 該組織部位處。 65. —種調適成將減壓分布至組織部位之減壓敷料,該敷料 包含: 一介面層’其調適成定位於該組織部位處; 吸收層,其與該介面層流體連通,以自該介面層及 該組織部位中之至少一者吸收液體; 一泵,其與該吸收層流體連通,以將該減壓傳遞至該 組織部位; 一分流層,其介於該吸收層與該泵之間,該分流層係 由大體上透氣但不透液的材料形成;及 覆蓋層,其疋位於該分流層上,以將該減壓維持於 該組織部位處。 139019.doc
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| US11547611B2 (en) | 2017-09-22 | 2023-01-10 | Kci Licensing, Inc. | Wound dressings and systems with high-flow therapeutic gas sources for topical wound therapy and related methods |
| WO2019084087A1 (en) * | 2017-10-24 | 2019-05-02 | Kci Licensing, Inc. | DRESSINGS AND SYSTEMS WITH LOW RATE THERAPEUTIC GAS SOURCES FOR TOPICAL WELD THERAPY AND RELATED METHODS |
| US11141523B2 (en) | 2017-10-26 | 2021-10-12 | Kci Licensing, Inc. | Wound dressings and systems for effluent management of topical wound therapy and related methods |
| US11576818B2 (en) | 2018-01-10 | 2023-02-14 | Kci Licensing, Inc. | Negative pressure wound therapy dressings with local oxygen generation for topical wound therapy and related methods |
| US12220301B2 (en) | 2018-01-10 | 2025-02-11 | Solventum Intellectual Properties Company | Wound dressings and systems with therapeutic gas and negative pressure sources for incision management and related methods |
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