JP2020110612A - テーパ付き低出血性植え込み型人工器官 - Google Patents
テーパ付き低出血性植え込み型人工器官 Download PDFInfo
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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
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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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
- 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
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
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- A—HUMAN NECESSITIES
- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/048—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- A—HUMAN NECESSITIES
- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/06—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- A—HUMAN NECESSITIES
- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/08—Materials for coatings
- A61L31/10—Macromolecular materials
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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
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
- A61M1/3655—Arterio-venous shunts or fistulae
-
- 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
- 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
-
- 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
- A61F2230/0069—Three-dimensional shapes cylindrical
-
- 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
- A61F2250/0036—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 thickness
-
- 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
- A61F2250/0039—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 diameter
-
- A—HUMAN NECESSITIES
- 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
- A61L2420/00—Materials or methods for coatings medical devices
- A61L2420/08—Coatings comprising two or more layers
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- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
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- Oral & Maxillofacial Surgery (AREA)
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- Hematology (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Prostheses (AREA)
- External Artificial Organs (AREA)
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Abstract
Description
本開示は、脈管グラフトなどの植え込み型デバイスに関し、より詳細には、グラフトの両端が異なる内径を有するようにテーパ付き長さ部分を有する低出血性管状脈管グラフトに関する。
罹患した脈管構造及び他の体管路の治療における植え込み型メディカルデバイスの使用は医療分野で一般的になっている。これらの植え込み型デバイスは、植え込み型デバイスを(例えば、縫合針及び/又は透析針によって)穿刺し、次いで、穿刺針の除去時に針穿刺部位で最小限の流体損失をもたらす、低出血性植え込み型デバイスを所望する用途に使用することができる。これらの植え込み型メディカルデバイス(例えば、グラフト)の幾つかは、グラフトの一端が反対端よりも大きい内径を有する、グラフトがその長さに沿ったテーパ部分から利益を得ることができる用途(例えば、透析)においても使用できる。針穿刺のために設計される典型的なグラフトは、グラフトの長さに沿って一定の壁厚を有するエラストマー材料(例えば、シリコーン)を含むことができる。典型的なグラフト、例えば、テーパを含むように製造された多孔性延伸ポリテトラフルオロエチレン(ePTFE)グラフトはテーパの大端部での壁厚がテーパの小端部での壁厚よりも小さく、したがって、柔軟性を制限する可能性がある。
本文献は、テーパ長さ部分を取り込み、透析針又は縫合針などの針による穿刺及び除去後に低出血特性を有する脈管グラフトなどの植え込み型メディカルデバイスを記載する。本開示による脈管グラフトは、第一の(内側)層、中間層、場合により存在する第二の(外側)層及びある長さを有する管状構造を含むことができ、前記中間層はエラストマーを含み、前記管状構造は近位の内径及び外径を有する近位端と、遠位の内径及び外径を有する遠位端とを有し、遠位の内径及び外径は、近位の内径及び外径よりもそれぞれ大きく、近位直径と遠位直径との間に位置する遷移長さ部分が存在し、前記中間層は管状構造の長さに沿って、特に遷移長さ部分に沿って可変厚さを有し、前記中間層の厚さは、前記近位端よりも前記遠位端で大きい。第一の内側層及び第二の外側層は、遷移長さ部分に沿って可変厚さであってもよいが、中間層とは対照的に(そして直観に反して)、近位端では厚く、遠位端では薄くなるように変化する。
添付の図面は本開示のさらなる理解を提供するために含まれ、本明細書に組み込まれ、その一部を構成し、本開示の実施形態を説明し、記載とともに本開示の原理を説明する役割を果たす。
本開示による植え込み型デバイス(例えば、脈管グラフト)は様々な用途において使用されうる。植え込み型デバイスは、図1に例として示すように、動静脈用途(例えば透析)に使用されうる。植え込み型デバイス(例えば、グラフト)100は静脈血管系104と連通することができる遠位端102と、動脈血管系112と連通することができる近位端106と、近位端と遠位端との間のある長さとを有することができる。グラフトはグラフトの長さに沿って管状形状を有することができる。植え込み型デバイス100はまた、ステントグラフト又はステントグラフトと脈管グラフトとのハイブリッドであってもよい。
Claims (20)
- 遷移部近位端内径を有する遷移部近位端と、遷移部近位端内径よりも大きい遷移部遠位端内径を有する遷移部遠位端と、該遷移部近位端と遷移部遠位端との間の遷移部長さとを有する遷移部を有する管状構造を含み、
前記管状構造は、多孔性ポリマーを含む第一の層と、該第一の層に隣接する少なくとも1つの中間層とを含み、そして
前記中間層は遷移部長さに沿って少なくとも部分的に延在している可変壁厚を有する、植え込み型デバイス。 - 前記中間層はエラストマーを含む、請求項1記載の植え込み型デバイス。
- 前記管状構造は近位部及び遠位部をさらに含む、請求項1記載の植え込み型デバイス。
- 第二の層をさらに含む、請求項1記載の植え込み型デバイス。
- 前記第一の層はePTFEである、請求項1記載の植え込み型デバイス。
- 前記中間層は、前記遷移部近位端での中間層壁厚よりも大きい前記遷移部遠位端での中間層壁厚を有する、請求項1記載の植え込み型デバイス。
- 前記中間層はシリコーンである、請求項2記載の植え込み型デバイス。
- 前記遠位部は前記遷移部長さよりも大きい前記遷移部遠位端と遠位部遠位端との間の長さを有し、前記遷移部長さは近位部近位端と遷移部近位端との間の長さよりも大きい、請求項3記載の植え込み型デバイス。
- 前記第二の層はePTFEである、請求項4記載の植え込み型デバイス。
- 前記中間層は中間層壁厚を有し、前記中間層壁厚は前記遷移部遠位端から前記遷移部近位端に向かってテーパ付けされており、前記中間層の中間層壁厚は中間層壁厚においてゼロである、請求項1記載の植え込み型デバイス。
- 第一の層と、エラストマーを含む中間層と、第二の層と、近位端と遠位端との間の長さを有する管状構造を含み、
前記近位端は近位内径を有し、前記遠位端は遠位内径を有し、前記近位内径は遠位内径より小さく、前記近位内径と前記遠位内径との間に位置する遷移部長さが存在し、
前記第一の層及び第二の層は多孔性材料を含み、そして
前記中間層は前記管状構造の長さに沿って、近位端でよりも遠位端で大きい中間層壁厚を有する、植え込み型デバイス。 - 前記中間層はシリコーンを含む、請求項11記載の植え込み型デバイス。
- 前記第一の層はePTFEを含む、請求項11記載の植え込み型デバイス。
- 前記第二の層はePTFEを含む、請求項11記載の植え込み型デバイス。
- 前記第一の層及び前記第二の層はePTFEを含む、請求項11記載の植え込み型デバイス。
- 前記第一の層は前記遠位端よりも前記近位端で大きい第一の層の壁厚を有し、前記第二の層は前記遠位端よりも前記近位端で大きい前記第二の層の壁厚を有する、請求項11記載の植え込み型デバイス。
- 前記遠位端よりも前記近位端で大きい全体壁厚をさらに備える、請求項16記載の植え込み型デバイス。
- 前記第一の層の壁厚及び前記第二の層の壁厚の合計に対する前記中間層の壁厚の比が前記近位端で1より大きい、前記比をさらに備える、請求項11記載の植え込み型デバイス。
- 前記第一の層の壁厚及び前記第二の層の壁厚の合計に対する前記中間層の壁厚の比が前記遠位端で1未満である、前記比をさらに備える、請求項11記載の植え込み型デバイス。
- 前記近位端における前記中間層の壁厚はゼロである、請求項11記載の植え込み型デバイス。
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US9814560B2 (en) | 2013-12-05 | 2017-11-14 | W. L. Gore & Associates, Inc. | Tapered implantable device and methods for making such devices |
CN107666882B (zh) * | 2015-06-05 | 2020-01-10 | W.L.戈尔及同仁股份有限公司 | 带有渐缩部的低渗血量可植入假体 |
JP7233810B2 (ja) * | 2018-06-08 | 2023-03-07 | 日星電気株式会社 | 管状部材 |
CN113038976A (zh) | 2018-09-06 | 2021-06-25 | 比奥莫迪克斯有限公司 | 医疗管状装置 |
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EP3302619A1 (en) | 2018-04-11 |
BR112017025950A2 (pt) | 2018-08-14 |
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CA2985477C (en) | 2020-03-10 |
JP7021275B2 (ja) | 2022-02-16 |
CN107666882A (zh) | 2018-02-06 |
US10357385B2 (en) | 2019-07-23 |
JP2018519893A (ja) | 2018-07-26 |
US20230277342A1 (en) | 2023-09-07 |
AU2016270380A1 (en) | 2018-01-04 |
AU2016270380B2 (en) | 2019-04-04 |
CN110946684B (zh) | 2022-06-03 |
US20160354217A1 (en) | 2016-12-08 |
CN110946684A (zh) | 2020-04-03 |
CN107666882B (zh) | 2020-01-10 |
US20190343663A1 (en) | 2019-11-14 |
JP6673942B2 (ja) | 2020-04-01 |
CA2985477A1 (en) | 2016-12-08 |
WO2016197017A1 (en) | 2016-12-08 |
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