JPS6187540A - 血管ステント - Google Patents

血管ステント

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Publication number
JPS6187540A
JPS6187540A JP60219016A JP21901685A JPS6187540A JP S6187540 A JPS6187540 A JP S6187540A JP 60219016 A JP60219016 A JP 60219016A JP 21901685 A JP21901685 A JP 21901685A JP S6187540 A JPS6187540 A JP S6187540A
Authority
JP
Japan
Prior art keywords
stent
passageway
sheath
wire
stents
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.)
Granted
Application number
JP60219016A
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English (en)
Other versions
JPH0432662B2 (ja
Inventor
セサレ・ジアンターコ
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.)
Cook Inc
Original Assignee
Cook Inc
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Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24632304&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS6187540(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cook Inc filed Critical Cook Inc
Publication of JPS6187540A publication Critical patent/JPS6187540A/ja
Publication of JPH0432662B2 publication Critical patent/JPH0432662B2/ja
Granted legal-status Critical Current

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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
    • A61F2/95—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
    • 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
    • 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
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02—Dilators made of swellable material
    • 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)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Surgical Instruments (AREA)
  • Medicinal Preparation (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 本発明は、ステントとその挿入方法に関する。
従来技術の説明 様々な状況において、収縮された管腔部分を拡張しある
いは管腔部分をイＩ過する通路を開いたまま保持するた
めの装置が提供Ｓれることが好ましい。そのような状況
は例えば動脈硬化症並びに腫扇などとして知られている
血管を通過する白液の流れを制限しあるいは停車させる
ような病気に関連して生じる。チャールズ・トンター傅
＋その他は１９６９年に、犬のひかがみ部の動脈内に置
かれたコイル状にしたステンレス鋼のワイヤのステント
の実験における使用について報告している。
コイルは長期間にわたる解放性を示しているが、その内
部の管腔を狭くし、小さなコイルだけしか皮膚を通して
通過することができない。「管腔を通過して配置Ｘれた
コイルバネの末端動脈の管の接合」　トンターその他、
調査、放射線学、１９６９．４］　３２９−３３２参照
（参考文献ｌ）。最近２つの研究所が形状記憶合金、ニ
チノールによ１１製造されたカテーテルを通過するプロ
テーゼの使用を報告している。トンターその他の［管腔
を通過する拡張ｉｆ能なニチノールコイルステント接合
」、放射線学、１９８：３年４月、１４７：２５９−’
２６０（参考文献２）、”７ラング・Ａその他の「外利
手術によらない動脈の内部プロテーゼの挿入」放用線学
１９８３年４月；１４７：２６１−２６３　（参８文献
３）参照。こ゛のようなステントは氷水あるいは加熱ご
れた塩水などを必要とするので、使用が複雑になる。同
時にそれらはステントワイヤのトにフイブ・ノンが堆桔
するために管１ｒケの狭窄を生しる。
本発明に関連するその他の参照例は、以下の米国特許で
ある。第４．１２’４，５８７吟、第３’、ｓｅｅ、９
５ｅ号第４，４２５，９０８号、ソＩ！ｌ！特許第９７
８．８２１号。以下の１１行物も含む。Ｃ・キアンツル
コその他「新ベナ、サバフィルタ・実験動物の評価」放
射線学、１９８０づ１：１２月、１３’７　：　８３５
−８３７　（参考文献４）、Ｍ・シモンその他「形状記
憶合金を使用したベナ・す／＜フィルタ」診断放射線学
、１２５　：　８９−９．１９７７年１０月（参考文献
５）。更にその他のｆ（１行物は、Ｄ・マースその他［
管腔を通過して挿入される血管の内部プロテーゼの放射
線学による追跡調査；拡張スパイラルを使用しての実験
研究」放射線学、１９８４年、１５２　：　６５９−６
６３である。
本発明の詳細な説明 本発明の目的は、耐層及び使用が容易で、流れの欠陥、
管腔の狭窄及び閉塞を減少させるステントを提供するこ
とにある。
本発明のステントの１つの実施例は、曲がりにより連結
之れだ閉じて連続した直線部分を含む密接に隣接したし
たジ゛グザグの構造に形成Ｓれたワイヤを含む。ステン
トは弾力かあってより小さな形状に圧縮可能であり、そ
の形状では通路へ挿入するために直線部分が平行して配
置され相千に密接に隣接している。ステントは弾力によ
り第二の形状に拡張可能であり、その形状では前記直線
部分が通路の壁に抗して押しつけられその通路を開いた
ままに保持し拡大する。
図面を参照１．つつ、本発明の詳細な説明する。閉じた
ジグザグの構造に形成されたステンレス鋼のワイヤのワ
イヤ１０を含む本発明のステント９の好ましい実施例の
側面図が第１図にある。
このワイヤは、閉じた連続構造を作り出すためにワイヤ
の端を溶接あるいは締めつけによりさや１１により閉じ
られている。第４図を見ると、直線部分１２か相虻に密
接に隣接して配置されたステントか弾力的に圧縮された
第−杉状を示している。
ステントと直線部分１２は比較的鋭い曲がり１３により
連結されている。このようにして、本発明の１つの特定
の実施例においては、曲がり１３は１パ径は０．２ｃｍ
以下である。本発明のこの特定の実施例は、スレンレス
鋼の外径が０．０１８インチであるワイヤを含む。ステ
ントは弾力性と拡張性があり、第４図の圧縮された第一
形状から第１図、第２図及び第６図に描かれた第二形状
ｔ・と拡張可能であり、ここでは、直線部分１２が通路
の壁に抗して通路を開いたままに保持する。第２図はス
テントの拡張した第二形状にある展望図を示している。
第２図に描かれているように、ステントはその第二の拡
張形状においては環状構造あるいは円筒形の構造を有し
ている。
本発明の方法を実行するために、ステントは第１Ｏ図に
描かれた第一形状に圧縮され、管状カートリッジ１５内
に配置される（第１Ｏ図）。カートリッジ１５はさや２
０のアダプタ１７にある凹部１６へ挿入ｙれる。それか
らステントは端の乎らな推進器２１の助けによりさや２
０を通過して前進する。このようにして、本発明の１つ
の実施例においては端の平らな推進器は８フレンチポリ
エチレン管から作られるが、端の平らな口ｆ撓性のある
金属棒が好ましい。第４図に示されているように、ステ
ン）１０がさやの端に到達すると、端の平らな推進器は
第５図に示されているようにさやが引き抜かれている間
保持される。これによりステントは自由になり、第６図
に示されるように拡張して血管の壁に接近する。特定の
状況のために８侠がある場合は、ステントが追加可能で
あり、Ｉ−述と同様の方式で血管内に配置される。この
ようにして、第７図にあるように、追加の２つのステン
トが第一ステントの長さ方向に沿って血管内に配置され
、第８図にあるように４つの重なり合うステントが使用
される場合は第一ステントに他のステントが重なり合う
。
本発明の試験においては、血管内のステントは２つのサ
イズで（完全拡張時には長さ５．５ｃｍ×直径４ｃｍと
；完全拡張時には長さ３．０ｃｍ×直径２．５ｃｍ）で
、ジグザグパターンに形成されたステンレス鋼ワイヤ（
外径０．０１８インチ）で設計され製造されている。そ
れらは時間の間隔を変化させて５匹の犬の頚動脈、小さ
な静脈、腹部の大動脈に配置され（後述の表を参照）、
使用の容易さ、拡張力、移動、開放性、プロトロンヒン
性、及び局部の血管の変化について評価された。この研
究には５匹の成長した雑種の犬（体＠１８−２７ｋｇ）
が使用ｙれた。これらの犬はｉ、ｖ、ナトリウムペンド
パルビタール（ネムブタル：３ｏｍｇ／ｋｇ）により麻
酔をかけ、頚静脈、大腿部の静脈、大腿部の動脈は外科
手術により分離された。血管に切りこみが入れられ、テ
ーパチップを有する８フレンチテフロンカテーテルを含
む８フレンチテフロンさやが挿入され、対象となってい
る場所への前進を蛍光透視法によりモニタした。ステン
］・は圧縮され、８フレンチさやのアダプタの内部に適
合する８フレンチカートリンジの内部に配置される。８
フレンチカテーテルは除去されカートリッジはさやアダ
プタの内部に配置され、ステントは８フレンチポリエチ
レン管によりさやを通って前進した。ステントがさやの
端に到達すると、ポリエチレン管はさやが引５抜かれて
いる間そのままに保持される。これはステントが拡張し
て血管の壁を支えるために開放ｙれるためである。一定
の場合においては、複数のステントが１つのステントの
内部に他のステントが配置され、あるいは順次に配置ｙ
れる（表■）。配置の後に続いて、配置直後と１週間後
とに血？６−撮影か行われ、それから１か月の間隔でス
テントの位置と血管解剖が報告Ｓれた。犬は研究の最後
に深いネムブタルの麻酔をかけられ安楽死ネせられ、完
全な死体解剖が実行された。
表■：５匹の夫への血管ステントの配置の要約人　ステ
ントサイズ５．５ｃｍ、　　　　　期間４１６　使用個
数、５個　　　　　　　　１か月血管配置・・・２つ、
１つは内部に、他は腹腔、頭蓋、腸間膜、右の腎臓の動
脈をつなぐ腹部の大動脈（Ａ　Ａ）に配置された。
２つ、右の心房のレベルで１つは内部に他は大静脈（Ｓ
ＶＣ）に配置された。
１つ、両方の腎臓の動脈をつなイ゛小ネい静１ｆｆＡ（
ＩＶＣ）に配置された。
ヌテントサイズ３．０ｃｍ、使用個数３個。
面ζｉ？配置・・・１つ、ＳｖＣのｌ−；８ｃｍの右頚
部に配置きれた。
２つ、１つは内部に、他はＳ　ＶＣ（７）　１８　ｃ　
ｍノ左９′ｆ１部に配置きれた。
犬　ステントサイズ５．５ｃｍ、　　　　　期間３５５
　使用個数、　　　　　　　　　　３か月１つは、腹腔
、頭蓋、腸間膜、右の腎臓の動脈をつなぐ腹部の大動脈
（ＡＡ）に配置された。
２つ、１つは内部に、他は両方の腎臓の動脈をつなぐＩ
ＶＣに配置された。
ステントサイズ３．０ｃｍ、使用個数３個。
２つ、１つは内部に、他は右心房のレベルに、そして１
つは右Ｉｕ房のト２．３ｃｍのレベルに配置された。
犬　ステントサイズ５．５ｃｍ、　　　　　期間３５４
　使用個数、２個　　　　　　　　４か月血管配置・・
・１つ、頭蓋、腸間膜、両方の腎臓の動脈をつなぐＡＡ
に配置された。
１つ１両方の腎臓の静脈をつなぐＩＶＣに配置された。
犬　ステントす・ｆズ５．５ｃｍ、　　　　　期間５０
５　使用個数、５個　　　　　′　　５か月血管配置・
・・４つ、順次にダイヤフラム（Ｔ１１）から始まりＬ
５で終るＡＡに配置された。
１つ、ダイヤフラムのレベルに配置された。
ステントサイズ３．０ｃｍ、使用個数３個。
１つ、レベルＬ４−’Ｌ５のＡＡにある最後の長いステ
ントの内部に配置ｙれた。
２つ、順次に肝臓と腎臓の静脈の間にあるＩＶＣの内部
に配置之れだ。
血管ステントを配置することには何の困難も生じなかっ
た。それらは使用か容易で、１つの内部に他を、あるい
は順次に配置することができた。
ステントの拡張の強さはステントの長さ、ステントのワ
イヤの直径、各ステントのワイヤにある折り畳みの数、
ステントの内部に配置されたステントの数に依存するこ
とが判明した。特に、ステ７トの長さが減少し、ステン
トのワイヤの直径が増加し、折り畳みの数が増加し、使
用されるステントの数が増加することにより拡張力は増
加する。
ステントを使用した血管の撮影によれば、Ｂｅれの障害
、管腔の狭窄、あるいは閉塞は見られなかった。ステン
トでつながれた血管は開放されたまま保持され、６か列
後にも狭窄を示すん１拠は発見ごれなかった。配置され
た３０個のステントのうち、２９個は移動していなかっ
た。頭蓋の小さい静脈に配置された長いステ７１−（５
，５ｃｍ）１つのみがおよそ２ｃｍ、配置後の最初の１
ｉｌ１間に移動したが、それ以Ｉ−の移動は生じること
なく、この移動を原因とする問題は発生しなかった。
死後の検査では、ステントのワイヤが血管の壁に接触し
た部分の周囲で内皮の増殖が発生しているのが見られた
。配置に続く４週間経過までに、静脈のステントは大部
分（８０％）細胞の増殖により覆われ、一方、動脈のス
テントは増殖か始まったばかり（３０％）であった。１
２週間までに、ステントのワイヤが面性の壁に接触して
いるところでは、ステントのすべてが内皮細胞により覆
われた。６ｉＪ旧１１１後でも、分岐につなげられたワ
イヤサイズには成長が見られなかった。加えて、血ｆ６
ム（１′の腐食は見られず、ステントには凝血は全く見
られなかった。
皮１＋すを通して拡張Ｏｆ能な内面性ステン］・は、ジ
グサクハターンに形成Ｓれたメンテン１／ヌ鋼ワイヤか
ら様々なＣｋＷと長さで製造ｉｊｌ能である。それらは
皮膚を通］７て動脈及び静脈に配置され、ニチノールコ
・イルを使用する場合のように氷水あるいは熱いＩＩ水
を必要としない（参考文献２．３）。
ステン！・の拡張力は、ワイヤサイズ、ワイヤの折り畳
みの数、ステントの長さを操作することにより制御ｌｌ
　ｌ’Ｔ能である。拡張力はより大きなサイズのワイヤ
により増加可能であるが、そうすると押しつぶしたステ
ントを配置するためにより大きなさやを使用する必要が
ある。ワイヤの折り畳み回数を増加させ、ステントの長
きを減少させることも、拡張力を増加させる。それ故、
スレンレス鋼の血管ステントは長さ、直径及び拡張力に
関してはオーダーメイドが可能である。
状況によっては複数のステントを使用することも可能で
ある。対象となる血管がステントの長さよりも長い場合
は、複数のステントをその端で少し重なり合う状態で順
次に配置することが可能である。加えて、１つのステン
トでは拡張力が不足する場合は、特定の場所で拡張力を
増加させるために１つを他の内部に配置することかり能
である。
血管の内部に配置した後、ステントは徐々に血管の内部
壁に接触し、その接触した部分において内皮の増殖によ
りワイヤが取巻かれた。このことは、血管システムが配
置された場所についてその他の研究において記述された
ことに類似している（参考文献２．３．４）。放射線学
的研究は、ステントを配置した１週間後までに移動を防
ぐために十分な内皮増殖が生じるが、この最初の週の間
に、確実にそうＨえるわけではないか、移動のＯｆ能Ｐ
１かある。配置の後１か月後、静脈のステントはおよそ
８０％が内皮細胞により包まれ、一方、動脈のステント
は３０％のみが包まれた。この差異はおそらく、動脈内
のｆＡｅれと圧力が静脈より大きいためであろう。３か
月までに、血管の壁に接触しているステントワイヤはす
べて完全に内皮細胞に包み込まれた。この血管壁への包
み込みはプロトロンビン性を減少させるが（参考文献３
）、６か月後でも露出したステントワイヤの上に凝血を
発見できなかった。ワイヤの部分が血管の壁に接触して
いないところ、例えば、ステントが分岐をつなぐところ
では、細胞の成長は認められなかった。この観察は、内
血管のステンレス鋼ワイヤの使用に関する以前の報告書
に対応している（参考文献４）。それ故、ステントは分
岐点において閉塞や血管の狭窄を生じることなく他の血
管をつなぐことがｎｆ能である。このことは他の形式の
内血管ステントについては報告されていない（参考文献
２．３）。このようにして、このステ〉ルス鋼ステント
は、これに適合する血管システムのとこにおいても配置
が可能である。６か月後でも、ステントを配置された面
省に狭窄は生じていない。これは、ステントワイヤにフ
ィブリンが堆積するために４週間以内に管腔の狭窄が生
じることを示したニチノール内血管ステントとは異なっ
ている（参考文献ｌ、２．３）。ステンｉ・か除去され
た時点で凝血の形成は認められなかった。これは以前の
報告の結果に類似している（参考文献２，３）。血管の
腐食は見られなかった。
これはおそらく、血管が正常で、拡張可能なため、血管
の壁を抗するステンｉ・と力を減少させることができた
ためであろう。
この評価の結果から示されることは、これらのステント
は様々な医学的応用が発見されるべきである、というこ
とである。これらには、隣接する腫瘍により圧迫された
血管内の流れを再確０すること（大静脈症候群）、皮膚
を通しての膨張開放の後の血管の開放性の保持、及び不
完全な、長い不規則な血管の狭窄の修正、をも含み得る
。加えて、これらのステンＩ・は例えば、呼吸、胆汁、
泌球系の外部からのｆ５ｑ　；Ｉ’ｌ、腫瘍により弱体
化した構造を強化するためにも使用可能であり、尿管、
尿１６　　あるいはＩＩＩの拡張された部分の膨張によ
る開放、動脈切開、動脈瘤、慟性の傷痕の局限化、を保
）Ｎすることにも使用可能である。
【図面の簡単な説明】
第１図は１本発明の好ましい実施例の側面図である。 第２図は、第１図の構造の端の立面図である。 第３図Ｉ才、腫瘍が血管のサイズを派、ルさせているこ
とを・トす血管の断面図である。 第４図は、本発明のステントを挿入する方法の１段階奢
、Ｒす第３図に類似の断面図である。 第５図と第６図は、第４図に描かれた方法の継続する段
階を示す一連の断面図である。 第７図は、軟発明の他の実施例と調和した曲管内に置か
れた３つのステントを示す第６図に類似の断面図である
。 第８図は、本発明の方法の他の実施例に調和した重なり
合う様式で曲管内に置かれた４つのステントを示す第６
図と第７図に類似の断面図である。 第９図は、本発明の方法に使用されたさやの側面図であ
る。 第１０図は、本発明の方法の一部としてさやの中に置か
れたスノテ／１・を示すさやの基部の断面図である。 ９・・・ステント、ｌＯ・・・ワイヤ、１１・・・スリ
ーブ、１２・・・直線部分、１３・・・曲がり、１５・
・・管状カートリッジ、１６・・・凹部、１７・・・ア
ダプタ、２０・・・さや、２１・・・端の平らな推進器
。 ■ つＤ ・− ぐ　　　　　　　　Ｄ

Claims (10)

    【特許請求の範囲】
  1. （１）曲がりによって結合され閉じて連続した直線部分
    を含む閉じたジグザグ構造に形成されたワイヤを備えて
    成るステントにおいて、通路に挿入するために前記直線
    部分が相互に密接に隣接して隣り合うように配置された
    小さな第一形状へと前記ステントが弾力的に圧縮され、
    前記直線部分が通路の壁に抗して通路を開放したまま保
    持するように押しつけている第二形状へと弾力的に拡張
    可能であることを特徴とするステント。
  2. （２）前記ステントをその内部に有する管状カートリッ
    ジを追加的に備えて成り、前記ステントが弾力的に前記
    小さな第一形状へと圧縮されることを特徴とする特許請
    求の範囲第１項に記載の装置。
  3. （３）貫通する管腔を有するさやを追加的に備えて成り
    、前記さやが前記管腔と同軸に配置されたアダプタ凹部
    を有し、前記アダプタ凹部が前記管腔に比較して大きな
    サイズを有し、閉じた端を有する可撓性部材が前記さや
    の内部に適合するに十分に小さい外径を有するが、なお
    前記さやの外へ前記ステントを押し出すに十分な大きさ
    を有することを特徴とする特許請求の範囲第１項に記載
    の装置。
  4. （４）前記ステンレス鋼ワイヤが外径０．０１８インチ
    （０．０４５ｃｍ）であることを特徴とする特許請求の
    範囲第１項に記載の装置。
  5. （５）前記ステントがその第二形状において長さ５．５
    ｃｍ、直径４ｃｍであることを特徴とする特許請求の範
    囲第４項に記載のステント。
  6. （６）前記ステントがその第二形状において長さ３ｃｍ
    、直径２．５ｃｍであることを特徴とする特許請求の範
    囲第４項に記載のステント。
  7. （７）前記曲がりが比較的鋭く、その半径が０．２ｃｍ
    以下であることを特徴とする特許請求の範囲第４項に記
    載のステント。
  8. （８）ステントを挿入する方法において、 閉じたジグザグ構造に形成されたワイヤを含むステント
    を、ジグザグ構造が平行して密接に隣接する、応力によ
    り曲がりによって結合された直線部分を含む第一形状に
    圧縮し、 前記圧縮されたワイヤステントをさやの中へ移動させ、 圧縮されたワイヤを内部に有するさやの末端を通路の中
    に配置し、 ステントをその場所に保持したまま通路からさやを除去
    し、それによりステントの応力が通路を開いて開放した
    まま保持するように通路の中でステントを拡張する方法
    。
  9. （９）前記圧縮、移動、配置及び除去の段階により１つ
    以上のステントが通路に配置され、前記１つ以上のステ
    ントが重なり合うことを特徴とする特許請求の範囲第８
    項に記載の方法。
  10. （１０）前記圧縮、移動、配置及び除去の段階により１
    つ以上のステントが通路に配置され、前記１つ以上のス
    テントが通路の長さ方向に間隔を置いて配置されること
    を特徴とする特許請求の範囲第８項に記載の方法。
JP60219016A 1984-10-01 1985-10-01 血管ステント Granted JPS6187540A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/656,261 US4580568A (en) 1984-10-01 1984-10-01 Percutaneous endovascular stent and method for insertion thereof
US656261 1991-02-15

Publications (2)

Publication Number Publication Date
JPS6187540A true JPS6187540A (ja) 1986-05-02
JPH0432662B2 JPH0432662B2 (ja) 1992-05-29

Family

ID=24632304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60219016A Granted JPS6187540A (ja) 1984-10-01 1985-10-01 血管ステント

Country Status (8)

Country Link
US (1) US4580568A (ja)
EP (1) EP0177330B1 (ja)
JP (1) JPS6187540A (ja)
AT (1) ATE64538T1 (ja)
AU (1) AU581464B2 (ja)
CA (1) CA1245527A (ja)
DE (1) DE3583276D1 (ja)
DK (1) DK166529B1 (ja)

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JPH0644910B2 (ja) * 1987-03-13 1994-06-15 クック・インコーポレーテッド 血管内ステント
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JPH023740U (ja) * 1988-06-22 1990-01-11
JPH054806Y2 (ja) * 1988-06-22 1993-02-08
JPH02172456A (ja) * 1988-12-26 1990-07-04 Kato Hatsujo Kaisha Ltd 管状器官の治療器
JPH0556109U (ja) * 1991-12-27 1993-07-27 泉工医科工業株式会社 気管の内径確保用器具及びその挿入用器具
JP2691074B2 (ja) * 1992-01-15 1997-12-17 クック・インコーポレーテッド 螺旋型ステント
US8287587B2 (en) 2006-12-28 2012-10-16 Terumo Kabushiki Kaisha Self-expandable stent

Also Published As

Publication number Publication date
CA1245527A (en) 1988-11-29
US4580568A (en) 1986-04-08
AU4811385A (en) 1986-04-10
ATE64538T1 (de) 1991-07-15
DK445885D0 (da) 1985-10-01
DE3583276D1 (de) 1991-07-25
DK445885A (da) 1986-04-02
DK166529B1 (da) 1993-06-07
AU581464B2 (en) 1989-02-23
JPH0432662B2 (ja) 1992-05-29
EP0177330B1 (en) 1991-06-19
EP0177330A2 (en) 1986-04-09
EP0177330A3 (en) 1986-09-24

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