JP7391866B2 - ステント - Google Patents
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- JP7391866B2 JP7391866B2 JP2020552834A JP2020552834A JP7391866B2 JP 7391866 B2 JP7391866 B2 JP 7391866B2 JP 2020552834 A JP2020552834 A JP 2020552834A JP 2020552834 A JP2020552834 A JP 2020552834A JP 7391866 B2 JP7391866 B2 JP 7391866B2
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- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 2
- 150000002843 nonmetals Chemical class 0.000 description 2
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
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- 229930040373 Paraformaldehyde Natural products 0.000 description 1
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- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
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- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000118 poly(D-lactic acid) Polymers 0.000 description 1
- 229920001434 poly(D-lactide) Polymers 0.000 description 1
- 229920001432 poly(L-lactide) Polymers 0.000 description 1
- 239000005015 poly(hydroxybutyrate) Substances 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
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Classifications
-
- 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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
-
- 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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/89—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
-
- 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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/91533—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other characterised by the phase between adjacent bands
- A61F2002/91541—Adjacent bands are arranged out of phase
-
- 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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91575—Adjacent bands being connected to each other connected peak to trough
-
- 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
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Cardiology (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
Description
一般に、ステントは、効果的な手術のための特定の固有の特性を有するように設計されている。例えば、ステントは、管腔内の曲がりくねった経路を進むために非常に柔軟である必要があり、管腔の石灰化病変を容易に押し通せるように、収縮状態で十分な剛性及び硬さを備えている必要がある。さらに、ステントは、配置中に動脈の形状を取ってその形状に一致でき、同時に、配置後のとび出し(prolapse)を回避するために動脈に適切な径方向の支持を提供するのに十分な径方向の強度及び剛性を有する必要がある。ステントは、反動が少なく、良好な拡張比を有している必要がある。さらに、ステントの設計は、ステントの設計を損なうことなくステントを収縮できるようにすべきであり、例えば、ステントが配置後も元の軸方向の長さを保てるようにするべきである。
Claims (27)
- 管状支持構造(102)を有する医療機器(100)であって、
前記管状支持構造(102)は、
その共通の長手方向軸に沿って連続して配置された複数のリングレット(202、204、206、208)であって、その各々が、周方向に沿って接続された複数のクラウン(210)から形成され、各クラウン(210)はV字状の構成で配置された2つの直線支柱(216)から形成された、複数のリングレット(202、204、206、208)と、
前記複数のリングレット(202、204、206、208)を接続するための複数の長尺状の接続要素(212)であって、その少なくとも1つが隣接するリングレット(202、204、206、208)を接続し、隣接するリングレット(202、204、206、208)を接続する連続した長尺状の接続要素(212)は径方向反射面に関して(about a radial plane of reflection)互いに鏡面反射を形成する、複数の長尺状の接続要素(212)と
を備え、
前記複数の長尺状の接続要素(212)のうちの少なくとも1つは、2つの長部(402)及び1つの短部(404)によりZ字状を形成するように構成され、
前記長部(402)は平行であり、
前記短部(404)は前記長部(402)と鈍角を形成しており、
前記鈍角は、管状支持構造(102)を圧縮又は拡張している間、変化しない、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
前記複数の長尺状の接続要素(212)の各々は、隣接するリングレット(202、204、206、208)の谷部を接続する、医療機器(100)。 - 請求項2に記載の医療機器(100)において、
前記複数の長尺状の接続要素(212)の各々は、隣接するリングレット(202、204、206、208)を、それらの間のオフセットで接続する、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
前記鈍角は91~160°である、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
隣接する前記リングレット(202、204、206、208)を接続するための複数の短い接続要素(214)をさらに備える、医療機器(100)。 - 請求項5に記載の医療機器(100)において、
複数の短い接続要素(214)の各々は、隣接するリングレット(202、204、206、208)の山部を接続する、医療機器(100)。 - 請求項5に記載の医療機器(100)において、
複数の短い接続要素(214)の各々は、隣接するリングレット(202、204、206、208)の一列に並んだ山部を接続する、医療機器(100)。 - 請求項5に記載の医療機器(100)において、
隣接する前記リングレット(202、204、206、208)は、前記複数の短い接続要素(214)のうちの1つ又は前記複数の長尺状の接続要素(212)のうちの1つを介して接続されている、医療機器(100)。 - 請求項8に記載の医療機器(100)において、
前記複数のリングレット(202、204、206、208)は、前記複数の短い接続要素(214)及び前記複数の長尺状の接続要素(212)によって交互に接続されている、医療機器(100)。 - 請求項5に記載の医療機器(100)において、
前記複数の長尺状の接続要素(212)のうちの1つの長尺状の接続要素(212)、及び前記複数の短い接続要素(214)のうちの1つの短い接続要素(214)は、共通のクラウンに接続されている、医療機器(100)。 - 請求項5に記載の医療機器(100)において、
前記クラウン(210)を形成する前記直線支柱(216)の各々、前記複数の長尺状の接続要素(212)の各々及び前記短い接続要素(214)の各々の、管状支持フレームの周方向で測った幅は、その長さに沿って一定である、医療機器(100)。 - 請求項5に記載の医療機器(100)において、
前記直線支柱(216)の各々、前記長尺状の接続要素(212)の各々及び前記短い接続要素(214)の各々の、管状支持フレームの径方向で測った厚さは、その長さに沿って一定である、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
生体適合性材料のコーティングを備える、医療機器(100)。 - 請求項13に記載の医療機器(100)において、
前記生体適合性材料は、薬剤溶出性の生体適合性材料である、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
前記管状支持構造(102)は、ポリマー、金属、合金、非金属、生分解性材料、生体吸収性材料のうちの少なくとも1つからなる生体適合性材料で構成されている、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
前記管状支持構造(102)は、クローズセル、オープンセル又はハイブリッド構成を有する、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
各リングレット(202、204、206、208)は、約4~15個のクラウン(210)を備える、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
前記管状支持構造(102)は、前記管状支持構造(102)の少なくとも1つの端部における少なくとも1つのアンカー部材(602)を備える、医療機器(100)。 - 請求項18に記載の医療機器(100)において、
前記アンカー部材(602)は、放射線不透過性マーカを備える、医療機器(100)。 - 請求項1~18のいずれか1項に記載の医療機器(100)において、
前記管状支持構造(102)のアンカー部材(602)を収容するための周辺スロットを含むエンドストッパ(702)をさらに備える、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
以下によって製造される、医療機器(100):
製造される前記医療機器(100)の設計を、設計機器に設定し、
前記医療機器(100)を製造するために、医学的に洗浄され及び承認されたワークピースへの前記設計のカービングを行い、
前記医療機器(100)の表面から材料を除去し、前記医療機器(100)を研磨することにより、前記医療機器(100)を仕上げる。 - 請求項21に記載の医療機器(100)において、
完成した前記医療機器(100)をコーティングすることをさらに含む、医療機器(100)。 - 請求項21に記載の医療機器(100)において、
前記ワークピースは、中空の円形チューブ、フィルム及びシートのうちの1つの形状である、医療機器(100)。 - 請求項21に記載の医療機器(100)において、
前記カービングは、レーザー加工、化学エッチング、光化学エッチング及び放電加工のうちの少なくとも1つによってなされる、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
前記医療機器(100)は、3D印刷技術及び積層造形の少なくとも1つによって製造される、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
前記医療機器(100)は、動物又は人体の動脈、路(tract)、管(duct)及び任意の導管(conduit)のいずれか1つに関連する異常を治療する際に使用される、医療機器(100)。 - 請求項1に記載の医療機器(100)において、
前記医療機器(100)は、大腿動脈、浅大腿動脈、膝窩動脈、脛骨動脈、膝動脈、大脳動脈、頸動脈、椎骨動脈、鎖骨下動脈、橈骨動脈、上腕動脈、腋窩動脈、冠状動脈、末梢動脈、腸骨動脈、神経-動脈、静脈、胆管、尿路、消化管、気管気管支樹、中脳水道又は泌尿生殖器系に関連する異常を治療する際に使用される、医療機器(100)。
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