JP7623391B2 - 吸収性材料からなる足場を用いたインビボ組織工学装置 - Google Patents
吸収性材料からなる足場を用いたインビボ組織工学装置 Download PDFInfo
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/0063—Implantable repair or support meshes, e.g. hernia meshes
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/022—Artificial gland structures using bioreactors
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- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3604—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/0077—Special surfaces of prostheses, e.g. for improving ingrowth
- A61F2002/0081—Special surfaces of prostheses, e.g. for improving ingrowth directly machined on the prosthetic surface, e.g. holes, grooves
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- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
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- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0076—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof multilayered, e.g. laminated structures
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- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0067—Three-dimensional shapes conical
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- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0069—Three-dimensional shapes cylindrical
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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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0071—Three-dimensional shapes spherical
-
- 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
- A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2240/001—Designing or manufacturing processes
- A61F2240/002—Designing or making customized prostheses
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0023—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in porosity
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- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0067—Means for introducing or releasing pharmaceutical products into the body
- A61F2250/0068—Means for introducing or releasing pharmaceutical products into the body the pharmaceutical product being in a reservoir
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/04—Materials or treatment for tissue regeneration for mammary reconstruction
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Description
乳房インプラントは、がんのために切除された乳房組織を置き換えるために一般的に使用され、豊胸術にも一般的に使用される。乳房切除後に乳房体を置換する乳房インプラントのほとんどは、生理食塩水又はシリコーンゲルが充填されている。無細胞マトリックスは、主に下極乳房をカバーしたり、再建された乳房の成形に使用される。これらの先行技術の乳房インプラントは、多くの欠点を有し、しばしば組織の壊死及び被膜拘縮を引き起こす。乳房手術が部分的乳房切除術(乳腺腫瘤摘出術と呼ばれることが多い)である場合、移植可能な装置が外科的欠陥への配置のために提案されてきた。BioZorbインプラントと呼ばれるそのような装置の1つは、Focal Therapeutics,Inc.によって販売されており、コイルなどの不連続な外周を生成するフレームワーク要素によって形成された剛性の生体吸収性本体を含む。その結果、多くの場合、装置は外科的欠陥を充填せず、したがって、乳腺腫瘤摘出術後に所望される結果である一貫して高品質の審美的外観が達成されない。更に、この装置は、乳房が小さく痩せた女性の欠陥に適切にステントを留置することはできず、そのような場合、瘢痕拘縮を伴わずに乳腺腫瘤摘出スペースの漸進的治癒を促進しない。Lebovicらの米国特許第9,615,915号及び第9,980,809号、及びHermannらの米国特許第10,413,381号は、これらのインプラントの代表例であり、美容的/審美的な望ましい結果が得られず、欠陥のサイズに依存するという欠点がある。
Claims (19)
- 人体の筋膜の解剖学的空間に移植するための組織工学装置であって、
前記筋膜内に位置決めするための近位部分、前記近位部分から離間した遠位部分、前記近位部分と前記遠位部分との間に延在する中空の中心コア、及び前記中空の中心コアを囲む側壁を有する、多孔質吸収性材料からなる足場と、
前記側壁に形成され、前記中空の中心コアの周りに放射状に配置された、複数の部分的に開放された組織工学チャンバと、を備え、前記組織工学チャンバは、前記解剖学的空間内の筋膜表面積よりも大きい総表面積を有する、組織工学装置。 - 前記足場が、前記多孔質吸収性材料の1つ以上のシートからなり、前記組織工学チャンバが、前記多孔質吸収性材料の前記1つ以上のシートの1つ以上のプリーツによって形成される、請求項1に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記近位部分が、前記中空の中心コアと連通する開口部を内部に有するディスク状端面を含む、請求項1に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記遠位部分が、前記中空の中心コアと連通する開口部を内部に有するディスク状端面を含む、請求項3に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 内部に穴を有する前記近位部分の前記ディスク状端面の周りに延在する取り外し可能なチューブと、前記足場内に負圧を生成し、余分な流体を排出するために前記チューブと連結されたポンプと、を更に備える、請求項4に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 細胞外タンパク質マトリックスを生成するために、線維芽細胞を一時的に付着させるための前記遠位部分の前記ディスク状端面に配設された短期吸収性材料の層を更に備え、前記短期吸収性材料は、足場の多孔質吸収性材料の分解前に分解する、請求項5に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記組織工学チャンバが内部に前記短期吸収性材料を含む、請求項6に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記短期吸収性材料がセルロースマトリックスである、請求項7に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記足場の前記近位部分によって内部で担持される穴を有するチューブと、前記足場内に負圧を生成し、余分な流体を排出するために前記チューブと連結されたポンプと、を更に備える、請求項1に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 人体の筋膜の解剖学的空間に移植するための組織工学装置であって、
前記筋膜内に位置決めするための近位部分、前記近位部分から離間した遠位部分、前記近位部分と前記遠位部分との間に延在する中心コア、及び前記中心コアを囲む側壁を有する、多孔質吸収性材料からなる足場を備え、前記側壁は、前記中心コアに沿う方向に積み重ねて配置された組織工学チャンバの複数の隣接するリングによって形成され、前記リングの各々は、前記中心コアの周りに放射状に配置された複数の部分的に開放された組織工学チャンバを含む、組織工学装置。 - 前記足場は、前記組織工学チャンバを形成するために多孔質吸収性メッシュ材料の1つ以上のプリーツシートからなる、請求項10に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記1つ以上のプリーツシートが折り畳まれて前記組織工学チャンバのための底部を形成し、対向するパネルが前記底部から延在して前記組織工学チャンバの下側のもののための壁を形成し、前記パネルが前記組織工学チャンバの前記下側のもののための上部を画定する位置で、互いに固定される、請求項11に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記パネルは、前記組織工学チャンバの前記下側のものから離れた前記位置から延在して、前記組織工学チャンバの前記下側のものの上に上側組織工学チャンバを形成し、前記組織工学チャンバの前記下側のものは、前記リングのうちの1つを形成し、前記上側組織工学チャンバは、当該リングのうちの1つに隣接する組織工学チャンバの前記リングのうちの別のものを形成する、請求項12に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 複数の前記リングが、減少する直径を有する層状に配置され、それにより前記側壁が先
細りになり、前記足場が円錐台状の構成を有する、請求項10に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。 - 人体の筋膜の解剖学的空間に移植するための組織工学装置であって、
前記筋膜内に位置決めするための近位部分、前記近位部分から離間した遠位部分、前記近位部分と前記遠位部分との間に延在する中心コア、及び前記中心コアを囲む側壁を有する、多孔質吸収性材料からなる足場を備え、前記側壁は、組織工学チャンバの複数の隣接するリングによって形成され、前記リングの各々は、前記中心コアの周りに放射状に配置された複数の部分的に開放された組織工学チャンバを含み、
前記中心コアが中空である、組織工学装置。 - 複数の前記リングが実質的に同じ直径を有し、それにより前記足場が管状の構成を有する、請求項15に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記リングが直径において変化して、球状の構成を生成する、請求項15に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記リングが直径において変化して、半球状の構成を生成する、請求項15に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
- 前記足場は、内部に開口部を有する前記近位部分の端部に配設されたディスクと、内部に開口部を有する前記遠位部分の端部に配設されたディスクと、を含み、前記ディスクの前記開口部は、前記中空の中心コアと位置合わせされる、請求項15に記載の人体の筋膜の解剖学的空間に移植するための組織工学装置。
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