JP5523700B2 - フレキシブルステント - Google Patents
フレキシブルステント Download PDFInfo
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- JP5523700B2 JP5523700B2 JP2008505478A JP2008505478A JP5523700B2 JP 5523700 B2 JP5523700 B2 JP 5523700B2 JP 2008505478 A JP2008505478 A JP 2008505478A JP 2008505478 A JP2008505478 A JP 2008505478A JP 5523700 B2 JP5523700 B2 JP 5523700B2
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- strut
- spiral
- graft material
- flexible stent
- stent
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- 239000000463 material Substances 0.000 claims description 84
- 230000001154 acute effect Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 15
- 210000004204 blood vessel Anatomy 0.000 description 13
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 230000008901 benefit Effects 0.000 description 7
- 210000001367 artery Anatomy 0.000 description 6
- 230000004323 axial length Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 206010002329 Aneurysm Diseases 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 229910001000 nickel titanium Inorganic materials 0.000 description 3
- 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 3
- 239000011295 pitch Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 2
- 230000010339 dilation Effects 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 210000001105 femoral artery Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000124008 Mammalia Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008321 arterial blood flow Effects 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 210000003137 popliteal artery Anatomy 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229940124597 therapeutic agent Drugs 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 208000019553 vascular disease Diseases 0.000 description 1
Classifications
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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
- 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
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- 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
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- A—HUMAN NECESSITIES
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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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- A—HUMAN NECESSITIES
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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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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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
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- 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
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- 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
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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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- 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
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- 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
- A61F2002/91525—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 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
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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
- 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
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- 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
-
- 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
- A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
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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
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/0054—V-shaped
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Physics & Mathematics (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Description
て定められる本発明の範囲と精神から逸脱しない範囲で、当該技術の専門家であれば多く
の追加、変更、および置き換えが可能である点を認める。例えば、任意のステントは右手
側あるいは左手側螺旋部分だけが利用されて構成されるか、あるいは螺旋部分には1ヶ所
のみよりもむしろ複数の巻き方向反転部があってもかまわない。また、螺旋部分には単位
長さあたりに多数の折り返しあるいは変動するピッチがあってもかまわないと同時に、ス
トラットリングおよび/または螺旋部分にはステントに沿う不均一な長さの部分があって
もかまわない。また、ステントあるいはステント様構造はその長さ方向に沿って様々なタイプの管状部分を備えるように構成される。一般に、ストラット部分および螺旋状部分がある。ストラット部分は、半径方向の伸張と半径方向強度がもたらされるよう主に構成される。螺旋状部分は、繰り返し曲げと軸方向圧縮ならびに伸張が可能となるよう主として構成される。曲げおよび軸方向圧縮は、同時に必要とされる可能性があり、従って、ステント構造は、軸方向の圧縮あるいは伸張状態において、繰り返しとなる相当量の曲げを許容する。曲げた状態において軸方向圧縮も許容する。ストラット部分は螺旋状部分間に設置されることが好ましく、螺旋状部分がストラット部分間に設置されることが好ましい。ステントは自己拡張すると同時に、ストラット部分および螺旋状部分がステントの長さに沿って交互に入れ替わる。また、螺旋状部分は螺旋状要素から構成されることが好ましい。螺旋状要素は、2つの異なるストラット部分の地点間のステント軸廻りに、螺旋状に延在する。螺旋状要素は、所定距離だけ周方向に離れて配置される。螺旋状要素は、伸張状態にある時において、ステントの周方向の約25%以上となる(ステントの軸廻りに90度の範囲に相当する)。また、螺旋状部分は、2つの別々のストラット部分の位置間においてステントの軸廻りに螺旋状に延びる螺旋状要素から構成され、螺旋状要素に二方向性がある。その場合、螺旋状要素は、2地点間をまず一方の周方向に延び、その後に反対側方向に延び、その結果、頂点を有することになる。また、他の参考例では、伸張した状態において、ステントの螺旋状部分は、約20%(好ましくは15%と25%の間の)の軸方向圧縮又は伸張が可能であるように構成され、それと同時に、約13ミリ(好ましくは10ミリと16ミリの間の)の最小曲げ半径による曲げを許容することが好ましい。また、他の参考例では、ステントには、軸方向に間隔を置いて配置される複数のストラット部分がある。このストラット部分は、全体的にステントの管状の軸方向セグメントであって、且つ半径方向に伸張可能となるよう構成される。螺旋状部分は、2つのストラット部分間に軸方向に挿入されるとともに、2つのストラット部分の周方向の空間に接続される螺旋状要素を複数備える。螺旋状要素は、これらの地点間で螺旋状に延在すると同時に、ステントが伸張状態にある際に、少なくとも一部の螺旋状部分の直径が、ストラット部分より大きくなるようになっている。ある他の実施例では、ストラットが伸張状態にある際に、少なくとも一部の螺旋状部分の直径がストラット部分より小さくなる。また、他の参考例では、ある実施例では、螺旋状要素は、該螺旋状要素に接合されるストラット要素間で少なくとも90度巻きつけられる。もう一つの実施例では、螺旋状要素は、該螺旋状要素に接合されるストラット要素間で少なくとも360度巻きつけられる。また、他の参考例では、他の実施例では、ステントグラフトは、ステントの外側、内側、又は外側および内側の両側を覆う生体適合性のグラフト材料から構成される。ステントグラフトは、本発明の任意の実施例のステント構造に適用し得る。ステントグラフト装置は、例えば動脈瘤(aneurysms)、切開(dissections)ならびに気管支(tracheo-bronchial)の構造の治療に利用される。ステントには、専門分野で既知のポリマーおよび/または薬品希釈材の塗布も可能である。
Claims (29)
- ストラット部材と、螺旋状部分と、を備えるフレキシブルステントであって、
前記ストラット部材は、個々の波状部分からなる波状パターンを有する複数のストラット要素から構成されると共に、前記フレキシブルステントの軸廻りに螺旋状に巻きつけられ、
前記螺旋状部分は、複数の螺旋状要素から構成されると共に、前記軸廻りにおいて前記ストラット部材と同一方向に螺旋状に巻き付けられ、
前記螺旋状要素は、それぞれ、前記軸廻りにおいて前記ストラット部材と同一方向に螺旋状に巻き付けられ、前記ストラット部材の一条の螺旋の間に延在して前記ストラット部材の一条の螺旋における2点を接続する細長い形状の要素であり、
前記複数のストラット要素は、第1の頂点を有する第1のストラット要素、第2の頂点を有する第2のストラット要素および第3の頂点を有する第3のストラット要素を含み、
前記第1の頂点は、前記螺旋状要素の前記軸方向における一端側に配置され、前記第2の頂点は、前記螺旋状要素の前記軸方向における他端側で前記第1の頂点と直近で対向して配置され、前記第3の頂点は、前記螺旋状要素の前記軸方向における他端側で前記第1の頂点に対して前記第2の頂点より離間した位置に配置され、
前記螺旋状要素が接続する前記2点は、前記第1の頂点と前記第3の頂点であり、
前記第2のストラット要素と前記第3のストラット要素の間には、前記軸方向に複数の他のストラット要素が配置され、前記螺旋状要素は、前記軸回りに少なくとも90度以上回転される長さを有し、
前記フレキシブルステントの圧縮状態における隣接する前記螺旋状要素の間の隙間の寸法は、少なくとも一部の隣接する前記螺旋状要素の間において、前記フレキシブルステントの展開状態における隣接する前記螺旋状要素の隙間の寸法と0の間を変化するように設定されることを特徴とする、
フレキシブルステント。 - 前記展開状態において、前記螺旋状要素は、前記2点の間において少なくとも360度巻きつけられることを特徴とする、
請求項1記載のフレキシブルステント。 - 複数の前記ストラット要素から構成され、前記軸廻りに螺旋状に巻きつけられるストラット部分をさらに備え、
前記ストラット部分は、前記軸方向におけるいずれかの端部に設けられることを特徴とする、
請求項1記載のフレキシブルステント。 - 前記螺旋状要素は、前記軸回りにおいて1つおきに並ぶ前記ストラット要素について前記2点を接続することを特徴とする請求項1に記載のフレキシブルステント。
- 前記螺旋状要素は、前記軸回りにおいて隣接する前記ストラット要素のそれぞれについて、前記2点を接続することを特徴とする、
請求項1記載のフレキシブルステント。 - 前記フレキシブルステントの外側面を覆う生体適合性のグラフト材料をさらに備えることを特徴とする、
請求項1記載のフレキシブルステント。 - 前記フレキシブルステントの内側面を覆う生体適合性のグラフト材料をさらに備えることを特徴とする、
請求項1記載のフレキシブルステント。 - 前記フレキシブルステントの内側面および外側面を覆う生体適合性のグラフト材料をさらに備えることを特徴とする、
請求項1記載のフレキシブルステント。 - 前記ストラット部材の少なくとも一部に取付けられる生体適合性のグラフト材料をさらに備え、
前記グラフト材料は、前記ストラット部材および前記螺旋状部分を覆うことを特徴とする、
請求項1記載のフレキシブルステント。 - 生体適合性のグラフト材料の領域を複数さらに備え、
前記グラフト材料の前記領域は、それぞれ、前記ストラット部材の一部に取り付けられると共に、該取り付けられたストラット部材および隣接する前記螺旋状部分を覆い、
前記グラフト材料の前記領域の間には、前記軸方向に隙間が設けられることを特徴とする、
請求項1記載のフレキシブルステント。 - 前記グラフト材料の前記領域の間の前記隙間の寸法は、前記軸方向における前記螺旋状部分の寸法の20%未満であることを特徴とする、
請求項10記載のフレキシブルステント。 - 生体適合性のグラフト材料の領域を複数さらに備え、
前記グラフト材料の前記領域は、それぞれ、前記ストラット部材の一部に取り付けられると共に、該取り付けられたストラット部材および隣接する前記螺旋状部分を覆い、
隣接する前記グラフト材料の前記領域において、前記グラフト材料が重複することを特徴とする、
請求項1記載のフレキシブルステント。 - 前記グラフト材料の重複は、前記軸方向における寸法が、前記軸方向における前記螺旋状部分の寸法の40%未満であることを特徴とする、
請求項12記載のフレキシブルステント。 - 生体適合性のグラフト材料をさらに備え、
前記グラフト材料は、前記ストラット部材の少なくとも一部に取り付けられ、前記ストラット部材および前記螺旋状部分を覆うと共に、前記螺旋状部分を覆う領域に膨らみを有することを特徴とする、
請求項1記載のフレキシブルステント。 - 生体適合性のグラフト材料をさらに備え、
前記グラフト材料は、前記ストラット部材の少なくとも一部に取り付けられ、前記ストラット部材および前記螺旋状部分を覆うと共に、前記螺旋状部分を覆う領域に複数の長手方向開口部を有することを特徴とする、
請求項1記載のフレキシブルステント。 - 生体適合性のグラフト材料をさらに備え、
前記グラフト材料は、前記ストラット部材の少なくとも一部に取り付けられると共に、前記ストラット部材および前記螺旋状部分を覆い、
前記グラフト材料の前記螺旋状部分を覆う領域は、膨らみを有すると共に、複数の長手方向開口部を有することを特徴とする、
請求項1記載のフレキシブルステント。 - 生体適合性のグラフト材料をさらに備え、
前記グラフト材料は、前記ストラット部材の少なくとも一部に取り付けられ、前記ストラット部材および前記螺旋状部分を覆うと共に、前記螺旋状部分を覆う領域に前記螺旋状要素のピッチに対応する複数の螺旋状開口部を有することを特徴とする、
請求項1記載のフレキシブルステント。 - 生体適合性のグラフト材料の領域を複数さらに備え、
前記グラフト材料の前記領域のそれぞれは、前記ストラット部材あるいは前記螺旋状部分のどちらかに取り付けられることを特徴とする、
請求項1記載のフレキシブルステント。 - 前記グラフト材料の前記領域のそれぞれの間には、前記軸方向に隙間が設けられることを特徴とする、
請求項18記載のフレキシブルステント。 - 前記グラフト材料の前記領域の間の前記隙間の寸法は、前記軸方向における前記螺旋状部分の寸法の20%未満であることを特徴とする、
請求項19記載のフレキシブルステント。 - 生体適合性のグラフト材料の領域を複数さらに備え、
前記グラフト材料の前記領域のそれぞれは、前記ストラット部材あるいは前記螺旋状部分のどちらかに取り付けられ、
隣接する前記グラフト材料の前記領域において、前記グラフト材料が重複することを特徴とする、
請求項1記載のフレキシブルステント。 - 前記グラフト材料の重複は、前記軸方向における寸法が、前記軸方向における前記螺旋状部分の寸法の40%未満であることを特徴とする、
請求項21記載のフレキシブルステント。 - 前記螺旋状要素は、360度を1巻きとした場合に、それぞれ、前記軸廻りに1巻きまたは複数巻きの範囲に延在することを特徴とする、
請求項1記載のフレキシブルステント。 - 座屈無く半径13mmで屈曲可能であることを特徴とする、
請求項1記載のフレキシブルステント。 - 複数の前記ストラット要素から構成され、前記軸廻りに螺旋状に巻きつけられると共に、前記軸方向におけるいずれかの端部に設けられるストラット部分と、
複数の移行用螺旋状要素から構成され、前記ストラット部分と前記ストラット部材を接続する移行用螺旋状部分と、をさらに備え、
前記ストラット部分は、前記ストラット部材の螺旋の延長として連続的に構成されると共に、前記軸に直交する面に対して前記ストラット部分がなす鋭角の角度が、前記軸に直交する面に対して前記ストラット部材がなす鋭角の角度よりも小さくなるように構成され、
前記移行用螺旋状要素は、螺旋状に延在して前記ストラット部材における前記ストラット要素の頂点と前記ストラット部分における前記ストラット要素の頂点を接続し、
前記軸に直交する面に対して前記ストラット部分がなす鋭角の角度は、前記ストラット部分を構成する隣り合う前記ストラット要素の頂点を含む面と前記直交する面とによって定義され、
前記軸に直交する面に対して前記ストラット部材がなす鋭角の角度は、前記ストラット部材を構成する隣り合う前記ストラット要素の頂点を含む面と前記直交する面とによって定義されることを特徴とする、
請求項1記載のフレキシブルステント。 - 自己拡張型のフレキシブルステントであって、
複数の第1のストラット要素から構成され、前記フレキシブルステントの軸廻りに螺旋状に巻きつけられるストラット部材と、
前記軸廻りにおいて前記ストラット部材と同一方向に巻き付けられると共に、前記ストラット部材の一条の螺旋の間に延在して前記ストラット部材の一条の螺旋における2点を接続する複数の螺旋状要素と、
複数の第2のストラット要素から構成され、前記軸廻りに螺旋状に巻きつけられると共に、前記軸方向におけるいずれかの端部に設けられるストラット部分と、
複数の移行用螺旋状要素から構成され、前記ストラット部分と前記ストラット部材を接続する移行用螺旋状部分と、を備え、
前記ストラット部分は、前記ストラット部材の螺旋の延長として連続的に構成されると共に、前記軸に直交する面に対して前記ストラット部分がなす鋭角の角度が、前記軸に直交する面に対して前記ストラット部材がなす鋭角の角度よりも小さくなるように構成され、
前記移行用螺旋状要素は、螺旋状に延在して前記第1のストラット要素の頂点と前記第2のストラット要素の頂点を接続し、
前記軸に直交する面に対して前記ストラット部分がなす鋭角の角度は、隣り合う前記第2のストラット要素の頂点を含む面と前記直交する面とによって定義され、
前記軸に直交する面に対して前記ストラット部材がなす鋭角の角度は、隣り合う前記第1のストラット要素の頂点を含む面と前記直交する面とによって定義され、
前記移行用螺旋状部分は、前記ストラット部分の1巻き以下の範囲に接続されることを特徴とする、
フレキシブルステント。 - 前記複数の移行用螺旋状要素の長さは、前記フレキシブルステントの周方向に沿って漸次長くなるまたは短くなることを特徴とする、
請求項26に記載のフレキシブルステント。 - 前記ストラット部分は、前記ストラット部材の巻数の1/4以下の巻数で、前記軸廻りに巻きつけられていることを特徴とする、
請求項26に記載のフレキシブルステント。 - 前記ストラット部分の1巻きにおける前記ストラット要素の数は、前記ストラット部材の1巻きにおける前記ストラット要素の数よりも多いことを特徴とする、
請求項26記載のフレキシブルステント。
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HK1165257A1 (en) | 2012-10-05 |
CN101484089B (zh) | 2015-11-25 |
CN102302390A (zh) | 2012-01-04 |
EP3613387B1 (en) | 2023-01-11 |
AU2006231559B2 (en) | 2012-03-22 |
AU2006231559A1 (en) | 2006-10-12 |
US20140379066A1 (en) | 2014-12-25 |
US9592137B2 (en) | 2017-03-14 |
EP1871292A2 (en) | 2008-01-02 |
US7803180B2 (en) | 2010-09-28 |
NZ563119A (en) | 2011-02-25 |
CA2610108A1 (en) | 2006-10-12 |
EP2505166A1 (en) | 2012-10-03 |
EP1871292B1 (en) | 2019-10-23 |
WO2006108010A2 (en) | 2006-10-12 |
ES2764992T3 (es) | 2020-06-05 |
US20060247759A1 (en) | 2006-11-02 |
CA2610108C (en) | 2014-03-25 |
CN102309370A (zh) | 2012-01-11 |
WO2006108010A3 (en) | 2009-04-16 |
CN102309370B (zh) | 2015-04-15 |
EP2505166B1 (en) | 2017-07-12 |
US20070208416A1 (en) | 2007-09-06 |
CN102302390B (zh) | 2016-05-25 |
EP3613387A1 (en) | 2020-02-26 |
JP2008544765A (ja) | 2008-12-11 |
CN101484089A (zh) | 2009-07-15 |
US20110029064A1 (en) | 2011-02-03 |
EP1871292A4 (en) | 2010-03-31 |
US7556644B2 (en) | 2009-07-07 |
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