JP2000176022A - 柔軟性拡張可能ステント - Google Patents

柔軟性拡張可能ステント

Info

Publication number
JP2000176022A
JP2000176022A JP11334452A JP33445299A JP2000176022A JP 2000176022 A JP2000176022 A JP 2000176022A JP 11334452 A JP11334452 A JP 11334452A JP 33445299 A JP33445299 A JP 33445299A JP 2000176022 A JP2000176022 A JP 2000176022A
Authority
JP
Japan
Prior art keywords
meander
pattern
stent
patterns
odd
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11334452A
Other languages
English (en)
Inventor
Henry M Israel
エム． イスラエル，ヘンリー
Gregory Pinchasik
ピンチャシク，グレゴリー
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medinol Ltd
Original Assignee
Medinol Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26961291&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JP2000176022(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Medinol Ltd filed Critical Medinol Ltd
Publication of JP2000176022A publication Critical patent/JP2000176022A/ja
Pending legal-status Critical Current

Links

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
    • A61F2/90—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
    • 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
    • A61F2/856—Single tubular stent with a side portal passage
    • 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
    • A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
    • 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
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0013—Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
    • 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

Abstract

(57)【要約】 【課題】 本発明は身体に移植するためのステント（3
0）を開示する。 【解決手段】 このステント（30）は、第一及び第二方
向に広がる軸を有する第一及び第二メアンダー模様（1
1，12）をもつ模様形状を有する管より成る。第一メア
ンダー模様は偶数次元及び奇数次元第一メアンダー模様
としてよい。この偶数次元及び奇数次元第一メアンダー
模様は互いと 180°の位相角でずれており、そしてこの
奇数次元模様は２本毎の偶数次元模様の間にある。第二
メアンダー模様は第一メアンダー模様とからみ合ってい
る。第一及び第二方向は互いと直交していてよい。第二
メアンダー模様は偶数次元及び奇数次元模様より成って
もよい。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は一般に生体に移植す
るためのステントに関する。
【０００２】
【従来の技術】様々なステントが当業界において公知で
ある。ここで、本願にとっては、「ステント」なる語
は、血管、又は身体におけるその他の開口部を広げ、そ
して得られる管腔サイズを維持するために利用される身
体適合性材料より成る器具を意味する。一般に、ステン
トは膨張式バルーンと一緒に身体の所望の位置にまで導
入され、そしてそのバルーンが膨張すると、ステントは
拡張し、これによってその開口部を広げる。ステントを
拡張させるその他の機械的器具も利用される。
【０００３】ワイヤーより成るステントの分野における
典型的な特許はPinchuk の米国特許第 5,019,090号、To
wer の同 5,161,547号、 Savinらの同 4,950,227号、Fo
ntaineの同 5,314,472号、Wiktorの同 4,886,062号及び
同 4,969,458号、並びにHillstead の同 4,856,516号で
ある。切断ストック金属より成るステントは以下に記載
されている：Palmazの米国特許第 4,733,665号、Rosenb
luthの同 4,762,128号、Palmaz及びSchatzの同 5,102,4
17号、Schatzの同 5,195,984号、並びにMeadoxのWO 91
FR013820号。
【０００４】Palmaz及びSchatzの米国特許第 5,102,417
号に記載のステントは柔軟性コネクターと共に接続され
た拡張可能管状移植片を有する。この移植片はその管の
縦軸に平行に配置された複数のスロットより成る。柔軟
可能なコネクターはらせん式コネクターである。管状移
植片は比較的硬質であるため、ステントを湾曲した血管
に通すときにそれが屈曲できるよう柔軟性コネクターが
必要とされる。米国特許第 5,102,417号のステントが拡
張すると、移植片は放射状に拡張し、その結果縦方向で
収縮する。しかしながら、同時に、らせん式コネクター
はよじれる。このよじれ運動は血管にとっておそらく有
害である。Schatzの米国特許第 5,195,984号には、類似
ではあるが、管状移植片の間に、管状移植片の縦軸に対
して平行に一本の直線状のコネクターを有するステント
が記載されている。この直線状の部材はよじれ運動を排
除する。しかしながら、それは非常に強力なコネクター
ではない。
【０００５】
【発明が解決しようとする課題】従い、本発明の目的
は、柔軟性ステントであって、拡張の際に縦方向におい
て最少限にて収縮するステントを提供することにある。
【０００６】
【課題を解決するための手段】本発明のステントは、第
一方向及び第二方向において広がる軸を有する第一及び
第二メアンダー模様をもつ模様形態を有する管より成
り、ここでこの第二メアンダー模様は第一メアンダー模
様とからみ合っている。その第一及び第二方向は互いと
直交し合ってよい。本発明の一の態様に従うと、この第
一メアンダー模様は偶数次元及び奇数次元第一メアンダ
ー模様とする。この偶数次元及び奇数次元第一メアンダ
ー模様は互いと 180°の位相角でずれており、そして奇
数次元模様は２本の偶数次元模様の間にある。第二メア
ンダー模様も偶数次元及び奇数次元模様より成ってよ
い。更に、本発明の好適な態様に従うと、第二メアンダ
ー模様は周期毎に２本のループを有し、そしてこの偶数
次元及び奇数次元第一メアンダー模様は第二メアンダー
模様の各ループの第一及び第二側部のそれぞれに接続し
ている。他方又は他に、この第二メアンダー模様は偶数
次元及び奇数次元第二メアンダー模様より成る。この態
様においては、この偶数次元及び奇数次元第二メアンダ
ー模様は偶数次元及び奇数次元第一メアンダー模様に接
続され、偶数次元及び奇数次元第二メアンダー模様の各
組の間に１本の完全ループがある。更に、本発明の好適
な態様に従うと、この第一及び第二メアンダー模様は平
らな金属より成る。他方、それらはワイヤーから切り取
ってもよい。更に、それらに任意の身体適合性材料を埋
込む又はカバーを施してもよい。
【０００７】
【発明の実施の形態】図１〜４に関し、本発明の原理に
従って構築し、そして機能する第一のステントの態様を
示す。図１はその拡張していない形状を示し、図２はス
テントの模様を示し、図３はその部分的に屈曲した位置
を示し、そして図４はその拡張状態を示す。本発明のス
テントは管であり、その側部には複数の２種類の直交メ
アンダー模様それぞれが設けられ、その模様は互いとか
らみ合っている。「メアンダー模様」なる語は本明細書
では中心線分を中心とした周期模様を説明するために用
い、そして「直交メアンダー模様」はその中心線分が互
いと直交する模様同志をいう。図１〜４のステントにお
いて、２種類のメアンダー模様を11及び12と表示し、そ
してそれらは図２で最もよくわかる。メアンダー模様11
は鉛直中心線分９を有する鉛直正弦波である。メアンダ
ー模様11は一周期毎に２本のループ14及び16を有し、こ
こでループ14は右に向って広がり、一方ループ16は左に
向って広がる。ループ14と16は共有部材15と17を共有
し、ここで部材15は一のループ14からその次のループ16
へと接続され、そして部材15は一のループ16からその次
のループ14とへ接続されている。
【０００８】メアンダー模様12は水平中心線分13を有す
る水平模様である。メアンダー模様12も18及び20と表示
したループを有するが、周期のループ間には22と表示し
た長い直線区画がある。ループ18は下方向に広がり、そ
してループ20は上方向に広がる。鉛直メアンダー模様11
は偶数次元及び奇数次元（ｏとｅ）のバージョンで施さ
れており、それらは互いと 180°の位相角でずれてい
る。即ち、メアンダー11ｏの各左開放ループ16はメアン
ダー11ｅの右開放ループ14と向い合い、そしてメアンダ
ー11ｏの右開放ループはメアンダー11ｅの左開放ループ
と向い合っている。水平メアンダー模様には奇数次元及
び偶数次元形態で施されていてもよい。水平メアンダー
模様12ｅの直線区画22は鉛直メアンダー模様11ｅの３個
毎の共有部材17と交差している。水平メアンダー模様12
ｏの直線区画22は、交差している共有部材17と２個後方
の共有部材15で始まって、鉛直メアンダー模様11ｅの３
個毎の共有部材15と交差している。その結果、メアンダ
ー模様12ｅと12ｏとの間に完全ループ14が、そしてメア
ンダー模様12ｏと12ｅとの間に完全ループ16ができる。
【０００９】図１にもどると、図２の模様は易変形性材
料、例えば金属の管30に形成されている。２種類のメア
ンダー模様に基づき、図１のステントは、カテーテルバ
ルーンの上にかぶせたとき、それは柔軟性であり、それ
故屈曲した血管の中を容易に通り抜けることができる。
図１のステントが屈曲している例を図３に示す。図３に
おいて、ステントは矢印40で表示した方向で表示地点Ａ
で屈曲し始めている。ステントが屈曲し始めると、Ｉと
表示した区画は曲線の内側となり、そしてＯと表示した
区画は曲線の外側となる。曲線Ｉの内側は向い側の曲線
Ｏの外側より短くなる。屈曲の際、地点Ａの右側にある
ループ14〜20は内側と外側の曲線との間の長さの差を補
うために形状変化する。例えば、曲線の内側付近のルー
プ18ｉ及び20ｉは、拡張する曲線の外側上のループ18ｏ
及び20ｏよりも互いと接近し合う。内側Ｉの近くのルー
プ14ｉ及び16ｉは圧縮され、一方曲線の外側Ｏの近くの
ループ14ｏ及び16ｏは拡張する。わかる通り、メアンダ
ー模様11及び12は双方とも屈曲に関与する。示してはい
ないが、図１〜４のステントは任意の方向において、且
つ同時に複数の方向において屈曲できることが理解され
るであろう。
【００１０】図４は拡張状態の図１のステントを図示す
る。ステントが拡張すると、メアンダー模様11及び12は
双方とも拡張する（即ち、ループ14〜20は全て広が
る）。わかる通り、拡張したステントは２タイプの閉じ
られた空間、即ちメアンダー模様12ｏと12ｅとの間の大
空間42及びメアンダー模様12ｅと12ｏとの間の小空間44
を有する。わかる通り、各大空間42はその左側に２本の
ループ14及びその右側に２本のループ16を有する。鉛直
メアンダー模様11ｅと11ｏとの間の大空間（42ａと表
示）はその頂部及び底部にループ18を有し、一方鉛直メ
アンダー模様11ｏと11ｅとの間の大空間（42ｂと表示）
はその頂部及び底部にループ20を有する。小空間44ａ及
び44ｂも同様である。
【００１１】直交メアンダー模様11及び12に基づき、図
１のステントは拡張の際に有意に収縮しないことに注目
すべきである。これは図５Ａ及び５Ｂに詳しく示してあ
る。このことについて説明する。図５Ａは拡張の際の一
本の鉛直メアンダー模様11の動きを示し、そして図５Ｂ
は拡張の際の一本の水平メアンダー模様12の動きを示
す。もとの模様を実線で示し、そして拡張した模様を破
線で示す。図５Ａの鉛直メアンダー模様11はそのループ
14及び16が広がることによって拡張する。その結果、鉛
直メアンダー模様11はループ当り２＊ｈ1 の値で鉛直方
向に増大する。しかしながら、それは2 ＊ｄ1 の値で水
平方向で収縮もする。同様に、図５Ｂの水平メアンダー
模様12はそのループ18及び20が広がることにより拡張す
る。その結果、水平メアンダー模様12はループ当り２＊
ｄ2 の値で水平方向で成長する。しかしながら、それは
ｈ2 の値で鉛直方向で収縮もする。即ち、鉛直メアンダ
ー模様11の鉛直方向増大は、少なくともある程度、水平
メアンダー模様12の鉛直方向収縮を補い、そしてその逆
も真なりである。任意のステントの先端部分は部分的に
しか補われず、それ故若干収縮しうる。
【００１２】２種類の直交メアンダー模様11及び12並び
にそれらが互いに付与し合う補完は図１の未拡張ステン
トに柔軟性を付与することが理解されるであろう。しか
しながら、ステントが拡張すると、ループ14及び16のそ
れぞれの変化は得られるステントに硬質性を付与し、そ
れ故ステントが血管を所望の内径に維持させることを可
能にする。
【００１３】本発明のステントは平らな金属から、それ
を図２の模様へとエッチングすることで製造できる。エ
ッチングを施した材料を屈曲させて管30にする。他方、
図２の模様は溶接又はよじったワイヤーから製造でき
る。本発明のステントは金属及び／又はワイヤーから作
れうることが明らかであろう。更に、それに保護材料を
プレーティングする、医薬品を浸す、及び／又は空間42
及び44を埋めることのできる材料でコーティングを施す
ことができる。本発明は、２種類のメアンダー模様、直
交型又はその他より成る模様をもって製造される全ての
ステントを包括するものと理解されるであろう。直交メ
アンダー模様を有するその他の典型的な模様をここで提
供し、ここで図６は模式バージョンであり、そして図７
は一層丸みを帯びたバージョンである。図８は拡張状態
の図７の模様を示す。図６及び７の模様は図２に示すも
のと似ているが、ただしそれはより水平なメアンダー模
様を有し、そしてそれらは図２に示しているような偶数
次元及び奇数次元のものではなく、一種類のものであ
る。
【００１４】図６及び７の双方でわかる通り、２タイプ
の鉛直メアンダー模様11ｅ及び11ｏは互いに対して 180
°の位相角でずれている。水平メアンダー模様12は鉛直
メアンダー模様11ｅの全線分15に接続している。図８は
拡張状態の図７の模様を示す。図８の拡張状態では偶数
次元及び奇数次元水平メアンダー模様がないため、大空
間及び小空間はない。その代わり、空間は全て同じサイ
ズである。
【００１５】本発明は記載の態様に限定されないことを
当業者は理解するであろう。本発明は添付の請求の範囲
によってのみ規定される。
【図面の簡単な説明】
【図１】本発明の第一の好適な態様に従って構築し、そ
して機能する模様付きステントの図示である。
【図２】図１のステントの模様の図示である。
【図３】屈曲位置における図１のステントの図示であ
る。
【図４】拡張状態の図１のステントの図示である。
【図５】５Ａ及び５Ｂは拡張による図１のステントの模
様の変化の図示である。
【図６】第二のステント模様の態様の図示である。
【図７】第三のステント模様の態様の図示である。
【図８】拡張状態の図７の模様の図示である。

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】 模様形状を有する管より成るステントで
    あって、ここでこの模様形状は： ａ．第一方向に広がる軸を有する偶数次元第一メアンダ
    ー模様； ｂ．これも第一方向に広がる軸を有する奇数次元第一メ
    アンダー模様：ここで前記奇数次元第一メアンダー模様
    は前記偶数次元第一メアンダー模様と 180°の位相角で
    ずれており、そして２本毎の偶数次元メアンダー模様の
    間にある； ｃ. 前記第一方向とは異なる第二方向に広がる軸を有す
    る第二メアンダー模様：ここで前記第二メアンダー模様
    は前記偶数次元及び奇数次元第一メアンダー模様とから
    み合って概して均一な分布構造を形成している；を含ん
    で成る、ステント。
JP11334452A 1994-07-28 1999-11-25 柔軟性拡張可能ステント Pending JP2000176022A (ja)

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US08/282181 1994-07-28
US08/457354 1995-05-31
US08/457,354 US5733303A (en) 1994-03-17 1995-05-31 Flexible expandable stent

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EP0846451A2 (en) 1998-06-10
BR9508353A (pt) 1997-11-04
DE69524638D1 (de) 2002-01-24
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EP0846448A3 (en) 1999-11-03
JPH10503676A (ja) 1998-04-07
DE19549477C5 (de) 2015-02-19
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WO1996003092A1 (en) 1996-02-08
EP1181901A2 (en) 2002-02-27
CA2423844C (en) 2007-09-25
CA2424525C (en) 2006-01-31
CN1158078A (zh) 1997-08-27
EP0846451A3 (en) 1999-11-03
DE29521206U1 (de) 1996-09-19
UA45355C2 (uk) 2002-04-15
EP1181902A2 (en) 2002-02-27
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DK0846452T3 (da) 2002-04-29
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GB9701636D0 (en) 1997-03-19
PT846452E (pt) 2002-07-31
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AU702468B2 (en) 1999-02-25

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