JP2014526294A - ステント、及びステントを配送カテーテル内に挿入する方法 - Google Patents
ステント、及びステントを配送カテーテル内に挿入する方法 Download PDFInfo
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Abstract
Description
Claims (37)
- 血流を動脈瘤嚢から進路変更させるステントにおいて、
細長のフレームであって、前記フレームを伸張させるプロセスで完全に半径方向に拡張した状態から半径方向収縮状態に半径方向に収縮可能な、該フレームを備え、
前記完全半径方向拡張状態は、外力がフレームに加わらないとき体温でのフレーム状態を表すものとし、
前記半径方向収縮状態で前記フレームは、前記完全半径方向拡張状態における前記フレームの最大側方寸法よりも少なくとも30%小さい最大側方寸法を有し、また
前記フレームは、前記動脈瘤嚢への開口部に位置する低気孔率領域を有し、前記低気孔率領域は、前記フレームが前記完全半径方向拡張状態にあるとき50%未満の気孔率を有するものとした、ステント。 - 請求項1記載のステントにおいて、前記完全半径方向拡張状態と前記半径方向収縮状態との間における前記フレームの伸張は少なくとも25%である、ステント。
- 請求項1又は2記載のステントにおいて、前記フレームは、前記完全半径方向拡張状態、又は半径方向収縮状態、又はその双方の状態において円筒形である、ステント。
- 請求項1〜3のうちいずれか一項記載のステントにおいて、前記フレームは、相互連結アームの網体を有する、ステント。
- 請求項4記載のステントにおいて、すべての相互連結アームは、前記フレームの座屈を含まないであり得るすべての半径方向収縮状態に対して半径方向のオーバーラップする部分がない状態で、共通半径上に留まるよう構成した、ステント。
- 請求項1〜5のうちいずれか一項記載のステントにおいて、前記半径方向収縮状態の最大側方寸法は5mmより小さいものとした、ステント。
- 請求項1〜6のうちいずれか一項記載のステントにおいて、前記半径方向収縮状態の最大側方寸法は3mmより小さいものとした、ステント。
- 請求項1〜7のうちいずれか一項記載のステントにおいて、前記半径方向収縮状態の最大側方寸法は、前記完全半径方向拡張状態における前記フレームの最大側方寸法よりも少なくとも50%小さいものとした、ステント。
- 請求項1〜8のうちいずれか一項記載のステントにおいて、前記フレームは、前記フレームの伸張を生ずる複数個の長手方向変形可能要素と、前記フレームの半径方向収縮を生ずる複数個の周方向変形可能要素とを有する、ステント。
- 請求項9記載のステントにおいて、1個又はそれ以上の長手方向変形可能要素は、前記1個又はそれ以上の周方向変形可能要素の形状に何らの変化も生ずることなく、伸張又は収縮できるものとした、ステント。
- 請求項9又は10記載のステントにおいて、前記1個又はそれ以上の長手方向変形可能要素の伸張又は収縮は、前記1個又はそれ以上の周方向変形可能要素の形状に変化をもたらすものとした、ステント。
- 請求項9〜11のうちいずれか一項記載のステントにおいて、前記複数個の長手方向変形可能要素は、互いに直接的又は間接的に連結し、長手方向に直列的に作用する長手方向変形要素のセットを有する、ステント。
- 請求項12記載のステントにおいて、前記複数個の長手方向変形可能要素は、互いに直列的に連結した前記長手方向変形可能要素の前記セットを複数個有し、前記セットのそれぞれは、異なる周方向位置に配置した、ステント。
- 請求項12又は13記載のステントにおいて、前記直列的に配列した前記長手方向変形可能要素の前記セットにおける少なくとも1つのセットの前記長手方向変形可能要素は、互いに連結して、長手方向の周期的構体を形成する、ステント。
- 請求項9〜14のうちいずれか一項記載のステントにおいて、前記長手方向変形可能要素及び周方向変形可能要素は、同一要素とした、ステント。
- 請求項9〜14のうちいずれか一項記載のステントにおいて、前記複数個の周方向変形可能要素は、前記複数個の長手方向変形可能要素とは、はっきりと異なるものとした、ステント。
- 請求項9〜16のうちいずれか一項記載のステントにおいて、前記複数個の周方向変形可能要素は、第1周方向変形可能要素及び第2周方向変形可能要素を有し、前記フレームが完全半径方向拡張状態にあるとき、前記第1周方向変形可能要素の少なくとも一部は、周方向の一方の側、又は双方の側で前記第2周方向変形可能要素によって連結した、ステント。
- 請求項17記載のステントにおいて、前記第1及び第2の周方向変形可能要素は、前記フレームの伸張の際に長手方向に一層離れるよう移動する、ステント。
- 請求項17又は18記載のステントにおいて、前記フレームは、前記フレームが半径方向収縮状態にあるとき、前記第1周方向変形可能要素のいかなる部分も、周方向のいずれかの側で前記第2周方向変形可能要素の何らかの部分によって結合することがないよう構成した、ステント。
- 請求項17〜19のうちいずれか一項記載のステントにおいて、前記第1周方向変形可能要素を直接的に第1長手方向変形可能要素に連結し、また前記第2周方向変形可能要素を直接的に第2長手方向変形可能要素に連結し、前記第1長手方向変形可能要素は、前記第2長手方向変形可能要素とは異なる長手方向位置にあるものとした、ステント。
- 請求項20記載のステントにおいて、前記第1及び第2の長手方向変形可能要素は、直列的に作用するよう互いに連結し、前記フレームの伸張により、前記第1及び第2の長手方向変形可能要素相互間の分離距離、及びこれら長手方向変形可能要素に取付けた前記第1及び第2の周方向変形可能要素相互間の分離距離を増大させる、ステント。
- 請求項9〜21記載のステントにおいて、前記複数個の周方向変形可能要素は、直接的又は間接的に互いに連結し、周方向に直列的に作用するようにした周方向変形可能要素のセットを有する、ステント。
- 請求項9〜22記載のステントにおいて、前記複数個の周方向変形可能要素は、互いに直列的に作用するよう連結した前記周方向変形可能要素の前記セットを複数個有し、前記セットのそれぞれは、異なる長手方向位置に配置した、ステント。
- 請求項22又は23記載のステントにおいて、前記直列的に配列した前記周方向変形可能要素の前記セットにおける少なくとも1つのセットの前記周方向変形可能要素は、互いに連結して、周方向の周期的構体を形成する、ステント。
- 請求項9〜24のうちいずれか一項記載のステントにおいて、前記長手方向変形可能要素及び前記周方向変形可能要素の変形は、前記完全拡張状態と前記半径方向収縮状態との間におけるあらゆる半径方向収縮度に対して、体温で弾性を示すものとした、ステント。
- 請求項1〜25のうちいずれか一項記載のステントにおいて、前記フレームは、前記フレームが完全半径方向拡張状態にあるとき、異なる気孔率を有する複数個の長手方向又は周方向に変形可能な要素を有する、ステント。
- 請求項26記載のステントにおいて、異なる気孔率を有する前記複数個の長手方向又は周方向に変形可能な要素の平均気孔率は、前記フレームが前記完全半径方向拡張状態にあるとき、前記フレームにおける低気孔率領域の長手方向周辺領域よりも前記フレームの低気孔率領域の中心領域で大きくなるようにした、ステント。
- 請求項26又は27記載のステントにおいて、異なる気孔率を有する前記複数個の長手方向又は周方向に変形可能な要素の平均気孔率は、前記フレームが前記完全半径方向拡張状態にあるとき、前記フレームにおける低気孔率領域の他の周方向領域よりも前記フレームの低気孔率領域の選択した周方向領域で大きくなるようにした、ステント。
- 請求項1〜28のうちいずれか一項記載のステントにおいて、前記フレームは、ニチロール又はステンレス鋼から形成した、ステント。
- 請求項1〜29のうちいずれか一項記載のステントにおいて、前記フレームは、中空チューブをレーザー切削することにより形成した、ステント。
- ステントを配送カテーテル内に挿入する方法であって、
前記ステントは、細長のフレームであって、前記フレームを伸張させるプロセスで完全に半径方向に拡張した状態から半径方向収縮状態に半径方向に収縮する、該フレームを備え、前記フレームは、前記フレームが前記完全半径方向拡張状態にあるとき50%未満の気孔率の低気孔率領域を有するものとした、方法において、
前記フレームの変形が優勢的に塑性的なものとなる温度に前記ステントを冷却するステップと、
前記フレームが半径方向収縮状態となるよう、前記フレームを長手方向に伸張させ、また前記フレームを半径方向に圧縮するステップと、及び
前記フレームを前記配送カテーテル内に挿入するステップと
を有する、方法。 - ステントを配送カテーテル内に挿入する方法であって、
前記ステントは、細長のフレームであって、前記フレームを伸張させるプロセスで完全に半径方向に拡張した状態から半径方向収縮状態に半径方向に収縮する、該フレームを備え、前記フレームは、前記フレームが前記完全半径方向拡張状態にあるとき50%未満の気孔率の低気孔率領域を有するものとした、方法において、
前記フレームの一方の端部を長手方向に拘束するステップと、
前記フレームの前記一方の端部から長手方向に剛性を示す剛性素子を前記フレーム内に挿入し、前記フレームの他方の端部における1個又はそれ以上の係留ポイントで前記剛性素子と前記フレームとの間の係合を生ずるステップと、
前記剛性素子を前記フレーム内に長手方向に押込んで前記フレームを伸張させるステップと、
前記フレームを半径方向に収縮させるステップと、
前記フレームを前記配送カテーテル内に挿入するステップと
を有する、方法。 - 請求項32記載の方法において、前記フレームを半径方向に収縮させるステップは、前記剛性素子を長手方向に押込むステップの一部として発生する、方法。
- 請求項32又は33記載の方法において、漏斗体を使用して前記フレームの半径方向収縮を支援する、方法。
- 請求項31〜34のうちいずれか一項記載の方法において、前記ステントは請求項1〜30のうちいずれか一項記載のものとした、方法。
- 添付図面につき説明し、また添付図面に示したように構成及び動作するよう編成した、ステント。
- 添付図面につき説明し、また添付図面に示したように、ステントを配送カテーテル内に挿入する方法。
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TR201802661T4 (tr) | 2018-03-21 |
US10383749B2 (en) | 2019-08-20 |
WO2013034930A3 (en) | 2013-07-25 |
CN104039275A (zh) | 2014-09-10 |
US20160220396A1 (en) | 2016-08-04 |
EP2753271A2 (en) | 2014-07-16 |
WO2013034930A2 (en) | 2013-03-14 |
ES2664839T3 (es) | 2018-04-23 |
PL2753271T3 (pl) | 2018-07-31 |
US20150190256A1 (en) | 2015-07-09 |
GB2494632A (en) | 2013-03-20 |
CN104039275B (zh) | 2016-09-14 |
US9301861B2 (en) | 2016-04-05 |
NO2753271T3 (ja) | 2018-06-16 |
CN106264643A (zh) | 2017-01-04 |
HUE038520T2 (hu) | 2018-10-29 |
DK2753271T3 (en) | 2018-03-12 |
EP2753271B1 (en) | 2018-01-17 |
JP6159330B2 (ja) | 2017-07-05 |
GB201115671D0 (en) | 2011-10-26 |
CN106264643B (zh) | 2019-08-06 |
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