JP2020525218A - 人工心臓弁デバイスならびに関連付けられたシステムおよび方法 - Google Patents
人工心臓弁デバイスならびに関連付けられたシステムおよび方法 Download PDFInfo
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Abstract
Description
本出願は、参照により本明細書に組み込まれる、2017年7月6日に出願された米国特許出願第15/643,011号に対する優先権を主張する。
本技術のいくつかの実施形態は、生来の僧帽弁を経皮的に置換するという特有の課題に対処し、かつ心臓の解剖学的構造を介して僧帽弁輪までナビゲートするのによく適した僧帽弁置換デバイスを対象とする。大動脈弁の置換と比較して、経皮的僧帽弁置換は、経皮的僧帽弁置換を大動脈弁置換よりもはるかに困難にする独特の解剖学的障害に直面している。第1に、比較的対称で均一な大動脈弁とは異なり、僧帽弁輪は、非円形のD形状または腎臓のような形状を有しており、非平面の、サドル状のジオメトリは、対称性を欠いていることがよくある。僧帽弁の複雑で高度に変化する解剖学により、特定の患者の生来の僧帽弁輪によく適合する僧帽弁プロテーゼの設計が困難になる。その結果、プロテーゼは生来の弁尖および/または輪にうまく適合しない場合があり、それは、血液の逆流を発生させる間隙を残す可能性がある。例えば、生来の僧帽弁に円筒形の弁プロテーゼを配置すると、生来の弁の交連領域に間隙が残る可能性があり、それを通して、弁周囲の漏れが発生する可能性がある。
本技術による弁置換デバイスの構造体および動作をよりよく理解するために、デバイスを移植するためのアプローチを最初に理解することが役立つ。僧帽弁または他のタイプの房室弁は、経皮的な様式で患者の血管系を通してアクセスされ得る。経皮的とは、典型的には外科的切開手順、または例えば、セルディンガー技術による針アクセスを使用するなどの低侵襲手技を使用して、心臓から離れた血管系の配置に皮膚を通してアクセスすることを意味する。遠隔血管系に経皮的にアクセスする能力はよく知られており、特許および医学文献に記載されている。血管アクセスのポイントに応じて、僧帽弁へのアクセスは、順行性である可能性があり、心房中隔を通過することによる左心房への進入(例えば、経中隔アプローチ)に依存する場合がある。あるいは、左心室が大動脈弁を通って入る場合、僧帽弁へのアクセスは逆行性である可能性がある。僧帽弁へのアクセスは、経心尖アプローチを介してカニューレを使用して達成することもできる。アプローチに応じて、介入ツールおよび支持カテーテル(複数可)は、本明細書で説明されるように、血管内で心臓まで進められ、かつ様々な様式で標的心臓弁に隣接して位置付けられてもよい。
本技術の実施形態は、心臓の弁のうちの1つ以上を治療することができ、特にいくつかの実施形態は、僧帽弁を有利に治療する。本技術の人工弁デバイスはまた、患者の心臓内の他の弁(例えば、二尖弁または三尖弁)の置換に適し得る。本技術の実施形態による人工心臓弁デバイスの実施例は、図6A〜図8Bを参照してこのセクションで説明される。図6A〜図8Bを参照して説明される実施形態の特定の要素、下部構造体、利点、使用、および/または他の特徴は、互いに適切に交換、置換、または他の方法で構成され得る。さらに、図6A〜図8Bを参照して説明される実施形態の適切な要素は、自己完結型および/または自己内蔵型デバイスとして使用され得る。
1.人工心臓弁デバイスであって、
上流部分および下流部分を備えた環状固定構造体を有している、固着部材と、
固着部材の上流部分に連結された第1の部分、および固着部材の上流部分から半径方向内方に離間された第2の部分を有している、管状弁支持体と、
弁支持体に連結されており、かつ血流が弁支持体を通って遮断される閉鎖位置、および血流が弁支持体を下流方向に通過することを可能にする開放位置から移動可能な少なくとも1つの弁尖を有している、弁アセンブリと、
固定構造体に連結された環状の第1の部分、および第1の部分に連結された第2の部分を有している、延伸部材であって、
延伸部材は、第1の部分が固定構造体から遠位に延在し、かつ第2の部分が第1の部分から近位に後方に延在するように、送達構成においてそれ自体の上に折り返されており、
延伸部材が展開構成にあるときに、第1の部分が、固定構造体から半径方向外方に延在し、かつ第2の部分が、第1の部分から半径方向外方に延在する、延伸部材と、を含む。
2.第2の部分が、送達構成において、第1の部分の半径方向内方に位置付けられている、実施例1に記載のデバイス。
3.第2の部分が、送達構成において、第1の部分の半径方向外方に位置付けられている、実施例1に記載のデバイス。
4.延伸部材が、固着部材における第1の終端部、および自由な第2の終端部を有しており、第1の部分の長さは、デバイスが送達構成にあるときに、自由な第2の終端部がデバイスの長手方向軸に対して実質的に平行な線に沿って第1の終端部と軸方向に整列されるように、第2の部分の長さと実質的に同じである、実施例1〜3のいずれか1つに記載のデバイス。
5.延伸部材が、固着部材における第1の終端部、および自由な第2の終端部を有しており、第1の部分の長さは、デバイスが送達構成にあるときに、第2の終端部がデバイスの長手方向軸に対して実質的に平行な線に沿って第1の終端部の遠位にあるように、第2の部分の長さよりも大きい、実施例1〜3のいずれか1つに記載のデバイス。
6.延伸部材が、固着部材における第1の終端部、および自由な第2の終端部を有しており、第1の部分の長さは、デバイスが送達構成にあるときに、第2の終端部がデバイスの長手方向軸に対して実質的に平行な線に沿って第1の終端部の近位にあるように、第2の部分の長さよりも小さい、実施例1〜3のいずれか1つに記載のデバイス。
7.拡張構成において、第1の部分および第2の部分は、第1の部分が第2の部分に対して角度を有しないように真っ直ぐな構成を有している、実施例1〜6のいずれか1つに記載のデバイス。
8.延伸部材が、1つ以上のインピーダンスセンサを含む、実施例1〜7のいずれか1つに記載のデバイス。
9.人工心臓弁デバイスであって、
内部を有する半径方向に拡張可能なフレームを有しており、かつ上流部分および下流部分を有している、固着部材であって、上流部分が、対象の心臓弁の生来の輪に、および/またはその下流に位置する組織を外方に押圧するように構成されており、かつ組織の形状に適合するように少なくとも部分的に変形可能であるように構成されている、組織固定部分を含む、固着部材と、
固着部材に対して位置付けられており、かつ血流が内部を通って遮断される閉鎖位置、および血流が上流部分から下流部分に向かって流れ方向に内部を通過することを可能にする開放位置から移動可能である少なくとも1つの弁尖を有している、弁であって、弁は、組織固定部分が組織の形状に適合するように変形されるときに、弁が適格性を維持するように、固着部材の組織固定部分から内方に離間する、弁と、
固着部材における第1の終端部、および第2の自由な終端部を有している、延伸部材であって、
延伸部材は、延伸部材が固着部材から遠位方向に延在し、反転した遠位部分を有し、かつ第2の自由な終端部が第1の距離だけ第1の終端部から離間する、送達構成を有しており、
延伸部材は、延伸部材が、第2の自由な終端部が第1の距離よりも大きい第2の距離だけ第1の終端部から離間するように、固着部材から離れて横方向に延在する、展開構成を有している、延伸部材と、を含む。
10.第2の自由な終端部は、延伸部材が送達構成にあるときに、第1の終端部の遠位にある、実施例9に記載のデバイス。
11.第2の自由な終端部は、延伸部材が送達構成にあるときに、第1の終端部の近位にある、実施例9に記載のデバイス。
12.延伸部材が、可撓性ウェブと、延伸部材の長さの少なくとも一部分に沿って延在する支持部材と、を含んでおり、支持部材が、ウェブに取り付けられている、実施例9〜11のいずれか1つに記載のデバイス。
13.延伸部材が、可撓性ウェブと、ウェブに取り付けられた超弾性材料と、を含む、実施例9〜11のいずれか1つに記載のデバイス。
14.延伸部材が、接合部と、第1の終端部と接合部との間に延在する第1の部分と、接合部と第2の終端部との間に延在する第2の部分と、を有しており、第1の部分の少なくとも一部分は、延伸部材が送達構成にあるときに、第2の部分の少なくとも一部分と重なる、実施例9〜13のいずれか1つに記載のデバイス。
15.延伸部材が、1つ以上のインピーダンスセンサを含む、実施例9〜14のいずれか1つに記載のデバイス。
16.人工心臓弁デバイスを展開するための方法であって、
生来の心臓弁輪に送達カテーテルの遠位部分を位置付けることと、
人工心臓弁デバイスを送達カテーテルの遠位部分に送達することであって、人工心臓弁デバイスは、デバイスが展開されるときに輪の上流側に位置付けられるように構成された縁部を有しており、縁部が、送達の間に第1の部分に折り畳まれ、かつ第2の部分に重なり合う、送達することと、
送達カテーテルを近位に引き出し、それにより、縁部が人工心臓弁デバイスの中心長手方向軸から離れて横方向に延在するように、縁部が広がることを可能にすることと、を含む。
17.送達カテーテルを近位方向に引き出すことは、(a)第1の部分の遠位端部が、デバイスの中心長手方向軸から半径方向に離れて移動し、かつ(b)第2の部分の遠位端部が、デバイスの中心長手方向に向かって半径方向に移動するように、縁部を広げることを可能にする、実施例16に記載の方法。
18.
縁部が、接合部を含んでおり、第1の部分および第2の部分が、接合部で連結されており、第1の部分の近位終端部が、デバイスの固着部材の上流領域に連結されており、
送達カテーテルを近位方向に引き出すことは、(a)第1の部分が近位終端部の周りでデバイスの中心長手方向軸から離れて回転し、かつ(b)第2の部分が、接合部の周りでデバイスの中心長手方向軸から離れて半径方向に回転するように、縁部を広げることを可能にする、実施例16に記載の方法。
19.人工心臓弁デバイスであって、
上流部分および下流部分を備えた環状固定構造体を有している、固着部材と、
固着部材の上流部分に連結された第1の部分、および固着部材の上流部分から半径方向内方に離間された第2の部分を有している、管状弁支持体と、
弁支持体に連結されており、かつ血流が弁支持体を通って遮断される閉鎖位置、および血流が弁支持体を下流方向に通過することを可能にする開放位置から移動可能な少なくとも1つの弁尖を有している、弁アセンブリと、
固定構造体に連結された環状の第1の部分、および第1の部分に連結された第2の部分を有している、延伸部材であって、
延伸部材は、第1の部分が固定構造体から遠位に延在し、かつ第2の部分が第1の部分から遠位に延在するように、送達構成において概ね直線状であり、
延伸部材は、第1の部分が固定構造体から半径方向外方に延在し、かつ第2の部分が固定構造体に向かって後方に延在するように、展開構成においてそれ自体の上に折り返される、延伸部材と、を含む。
20.第2の部分は、第2の部分が、展開構成において、第1の部分の上流に位置付けられるように、上流方向に固定構造体に向かって後方に延在している、実施例19に記載のデバイス。
21.第2の部分は、第2の部分が、展開構成において、第1の部分の下流に位置付けられるように、下流方向に固定構造体に向かって後方に延在している、実施例18に記載のデバイス。
22.延伸部材が、固着部材における第1の終端部、および自由な第2の終端部を有しており、第1の部分の長さは、デバイスが拡張されるときに、第2の終端部が第1の部分の長手方向軸に対して実質的に平行な線に沿って第1の終端部と軸方向に整列されるように、第2の部分の長さと実質的に同じである、実施例19〜21のいずれか1つに記載のデバイス。
23.延伸部材が、固着部材における第1の終端部、および自由な第2の終端部を有しており、第1の部分の長さは、デバイスが拡張されるときに、第2の終端部が第1の部分の長手方向軸に対して実質的に平行な線に沿って第1の終端部の半径方向外方に、かつそれから離間するように、第2の部分の長さよりも大きい、実施例19〜21のいずれか1つに記載のデバイス。
24.延伸部材が、固着部材における第1の終端部、および自由な第2の終端部を有しており、第1の部分の長さは、デバイスが拡張されるときに、第2の終端部が第1の部分の長手方向軸に対して実質的に平行な線に沿って第1の終端部の半径方向内方に、かつそれから離間するように、第2の部分の長さよりも小さい、実施例19〜21のいずれか1つに記載のデバイス。
25.拡張構成において、第1の部分および第2の部分は、第1の部分が第2の部分に対して角度を有しないように真っ直ぐな構成を有している、実施例19〜24のいずれか1つに記載のデバイス。
26.人工心臓弁デバイスであって、
内部を有する半径方向に拡張可能なフレームを有しており、かつ上流部分および下流部分を有している、固着部材であって、上流部分が、対象の心臓弁の生来の輪に、および/またはその下流に位置する組織を外方に押圧するように構成されており、かつ組織の形状に適合するように少なくとも部分的に変形可能であるように構成されている、組織固定部分を含む、固着部材と、
固着部材に対して位置付けられており、かつ血流が内部を通って遮断される閉鎖位置、および血流が上流部分から下流部分に向かって流れ方向に内部を通過することを可能にする開放位置から移動可能である少なくとも1つの弁尖を有している、弁であって、弁は、組織固定部分が組織の形状に適合するように変形されるときに、弁が適格性を維持するように、固着部材の組織固定部分から内方に離間する、弁と、
固着部材における第1の終端部、および第2の自由な終端部を有している、延伸部材であって、
延伸部材は、延伸部材が概ね真っ直ぐな構成で延在し、かつ第2の自由な終端部が第1の距離だけ第1の終端部から離間する、送達構成を有しており、
延伸部材は、延伸部材が固着部材から遠位に離れて延在し、反転した遠位部分を有し、かつ第2の自由な終端部が第1の距離よりも小さい第2の距離だけ第1の終端部から離間する、展開構成を有している、延伸部材と、を含む。
27.延伸部材が、可撓性ウェブと、延伸部材の長さの少なくとも一部分に沿って延在する支持部材と、を含んでおり、支持部材が、ウェブに取り付けられている、実施例26に記載のデバイス。
28.人工心臓弁デバイスを展開するための方法であって、
生来の心臓弁輪に送達カテーテルの遠位部分を位置付けることと、
人工心臓弁デバイスを送達カテーテルの遠位部分に送達することであって、人工心臓弁デバイスは、デバイスが展開されるときに輪の上流側に位置付けられるように構成された縁部を有しており、縁部が、第1の部分と、送達の間に第1の部分の遠位に位置付けられる第2の部分と、を有している、送達することと、
送達カテーテルを近位方向に引き出し、それにより、(a)第1の部分の遠位端部が、展開されたデバイスの中心長手方向軸に対して第1の方向に移動し、かつ(b)第2の部分の遠位端部が、第1の方向とは反対の中心長手方向軸に対して第2の方向に移動するように、縁部をそれ自体の上に折り返すことを可能にすることと、を含む。
29.送達カテーテルを近位方向に引き出すことは、(a)第1の部分の遠位端部が展開されたデバイスの中心長手方向軸から離れて移動し、かつ(b)第2の部分の遠位端部が中心長手方向に向かって移動するように、縁部をそれ自体の上に折り返すことを可能にする、実施例28に記載の方法。
30.送達カテーテルを近位方向に引き出すことは、(a)第1の部分の遠位端部が展開されたデバイスの中心長手方向軸に向かって移動し、かつ(b)第2の部分の遠位端部が中心長手方向から離れて移動するように、縁部をそれ自体の上に折り返すことを可能にする、実施例29に記載の方法。
Claims (30)
- 人工心臓弁デバイスであって、
上流部分および下流部分を備えた環状固定構造体を有している、固着部材と、
前記固着部材の前記上流部分に連結された第1の部分、および前記固着部材の前記上流部分から半径方向内方に離間された第2の部分を有している、管状弁支持体と、
前記弁支持体に連結されており、かつ血流が前記弁支持体を通って遮断される閉鎖位置、および血流が前記弁支持体を下流方向に通過することを可能にする開放位置から移動可能な少なくとも1つの弁尖を有している、弁アセンブリと、
前記固定構造体に連結された環状の第1の部分、および前記第1の部分に連結された第2の部分を有している、延伸部材であって、
前記延伸部材は、前記第1の部分が前記固定構造体から遠位に延在し、かつ前記第2の部分が前記第1の部分から近位に後方に延在するように、送達構成においてそれ自体の上に折り返されており、
前記延伸部材が展開構成にあるときに、前記第1の部分が、前記固定構造体から半径方向外方に延在し、かつ前記第2の部分が、前記第1の部分から半径方向外方に延在する、延伸部材と、を含む、人工心臓弁デバイス。 - 前記第2の部分が、前記送達構成において、前記第1の部分の半径方向内方に位置付けられている、請求項1に記載のデバイス。
- 前記第2の部分が、前記送達構成において、前記第1の部分の半径方向外方に位置付けられている、請求項1に記載のデバイス。
- 前記延伸部材が、前記固着部材における第1の終端部、および自由な第2の終端部を有しており、前記第1の部分の長さは、前記デバイスが前記送達構成にあるときに、前記自由な第2の終端部が前記デバイスの長手方向軸に対して実質的に平行な線に沿って前記第1の終端部と軸方向に整列されるように、前記第2の部分の長さと実質的に同じである、請求項1に記載のデバイス。
- 前記延伸部材が、前記固着部材における第1の終端部、および自由な第2の終端部を有しており、前記第1の部分の長さは、前記デバイスが前記送達構成にあるときに、前記第2の終端部が前記デバイスの前記長手方向軸に対して実質的に平行な線に沿って前記第1の終端部の遠位にあるように、前記第2の部分の長さよりも大きい、請求項1に記載のデバイス。
- 前記延伸部材が、前記固着部材における第1の終端部、および自由な第2の終端部を有しており、前記第1の部分の長さは、前記デバイスが前記送達構成にあるときに、前記第2の終端部が前記デバイスの前記長手方向軸に対して実質的に平行な線に沿って第1の終端部の近位にあるように、前記第2の部分の長さよりも小さい、請求項1に記載のデバイス。
- 拡張構成において、前記第1の部分および前記第2の部分は、前記第1の部分が前記第2の部分に対して角度を有しないように真っ直ぐな構成を有している、請求項1に記載のデバイス。
- 前記延伸部材が、1つ以上のインピーダンスセンサを含む、請求項1に記載のデバイス。
- 人工心臓弁デバイスであって、
内部を有する半径方向に拡張可能なフレームを有しており、かつ上流部分および下流部分を有している、固着部材であって、前記上流部分が、対象の心臓弁の生来の輪に、および/またはその下流に位置する組織を外方に押圧するように構成されており、かつ前記組織の形状に適合するように少なくとも部分的に変形可能であるように構成されている、組織固定部分を含む、固着部材と、
固着部材に対して位置付けられており、かつ血流が内部を通って遮断される閉鎖位置、および血流が上流部分から下流部分に向かって流れ方向に内部を通過することを可能にする開放位置から移動可能である少なくとも1つの弁尖を有している、弁であって、弁は、組織固定部分が組織の形状に適合するように変形されるときに、弁が適格性を維持するように、固着部材の組織固定部分から内方に離間する、弁と、
前記固着部材における第1の終端部、および第2の自由な終端部を有している、延伸部材であって、
前記延伸部材は、前記延伸部材が前記固着部材から遠位方向に延在し、反転した遠位部分を有し、かつ前記第2の自由な終端部が第1の距離だけ前記第1の終端部から離間する、送達構成を有しており、
前記延伸部材は、前記延伸部材が、前記第2の自由な終端部が前記第1の距離よりも大きい第2の距離だけ前記第1の終端部から離間するように、前記固着部材から離れて横方向に延在する、展開構成を有している、延伸部材と、を含む、人工心臓弁デバイス。 - 前記第2の自由な終端部は、前記延伸部材が前記送達構成にあるときに、前記第1の終端部の遠位にある、請求項9に記載のデバイス。
- 前記第2の自由な終端部は、前記延伸部材が前記送達構成にあるときに、前記第1の終端部の近位にある、請求項9に記載のデバイス。
- 前記延伸部材が、可撓性ウェブと、前記延伸部材の長さの少なくとも一部分に沿って延在する支持部材と、を含んでおり、前記支持部材が、前記ウェブに取り付けられている、請求項9に記載のデバイス。
- 前記延伸部材が、可撓性ウェブと、前記延伸部材の長さの少なくとも一部分に沿って延在する支持部材と、を含んでおり、前記支持部材が、前記ウェブに取り付けられている、請求項9に記載のデバイス。
- 前記延伸部材が、接合部と、前記第1の終端部と前記接合部との間に延在する第1の部分と、前記接合部と前記第2の終端部との間に延在する第2の部分と、を有しており、前記第1の部分の少なくとも一部分は、前記延伸部材が送達構成にあるときに、前記第2の部分の少なくとも一部分と重なる、請求項9に記載のデバイス。
- 前記延伸部材が、1つ以上のインピーダンスセンサを含む、請求項9に記載のデバイス。
- 人工心臓弁デバイスを展開するための方法であって、
生来の心臓弁輪に送達カテーテルの遠位部分を位置付けることと、
人工心臓弁デバイスを前記送達カテーテルの前記遠位部分に送達することであって、前記人工心臓弁デバイスは、前記デバイスが展開されるときに前記輪の上流側に位置付けられるように構成された縁部を有しており、前記縁部が、送達の間に第1の部分に折り畳まれ、かつ第2の部分に重なり合う、送達することと、
前記送達カテーテルを近位に引き出し、それにより、前記縁部が前記人工心臓弁デバイスの中心長手方向軸から離れて横方向に延在するように、前記縁部が広がることを可能にすることと、を含む、方法。 - 前記送達カテーテルを近位方向に引き出すことは、(a)前記第1の部分の遠位端部が、前記デバイスの前記中心長手方向軸から半径方向に離れて移動し、かつ(b)前記第2の部分の遠位端部が、前記デバイスの前記中心長手方向に向かって半径方向に移動するように、前記縁部を広げることを可能にする、請求項16に記載の方法。
- 前記縁部が、接合部を含んでおり、前記第1の部分および前記第2の部分が、前記接合部で連結されており、前記第1の部分の近位終端部が、前記デバイスの固着部材の上流領域に連結されており、
前記送達カテーテルを近位方向に引き出すことは、(a)前記第1の部分が前記近位終端部の周りで前記デバイスの前記中心長手方向軸から離れて回転し、かつ(b)前記第2の部分が、前記接合部の周りで前記デバイスの前記中心長手方向軸から離れて半径方向に回転するように、前記縁部を広げることを可能にする、請求項16に記載の方法。 - 人工心臓弁デバイスであって、
上流部分および下流部分を備えた環状固定構造体を有している、固着部材と、
前記固着部材の前記上流部分に連結された第1の部分、および前記固着部材の前記上流部分から半径方向内方に離間された第2の部分を有している、管状弁支持体と、
前記弁支持体に連結されており、かつ血流が前記弁支持体を通って遮断される閉鎖位置、および血流が前記弁支持体を下流方向に通過することを可能にする開放位置から移動可能な少なくとも1つの弁尖を有している、弁アセンブリと、
前記固定構造体に連結された環状の第1の部分、および前記第1の部分に連結された第2の部分を有している、延伸部材であって、
前記延伸部材は、前記第1の部分が前記固定構造体から遠位に延在し、かつ前記第2の部分が前記第1の部分から遠位に延在するように、送達構成において概ね直線状であり、
前記延伸部材は、前記第1の部分が前記固定構造体から半径方向外方に延在し、かつ前記第2の部分が前記固定構造体に向かって後方に延在するように、展開構成においてそれ自体の上に折り返される、延伸部材と、を含む、人工心臓弁デバイス。 - 前記第2の部分は、前記第2の部分が、前記展開構成において、前記第1の部分の上流に位置付けられるように、上流方向に前記固定構造体に向かって後方に延在している、請求項19に記載のデバイス。
- 前記第2の部分は、前記第2の部分が、前記展開構成において、前記第1の部分の下流に位置付けられるように、下流方向に前記固定構造体に向かって後方に延在している、請求項19に記載のデバイス。
- 前記延伸部材が、前記固着部材における第1の終端部、および自由な第2の終端部を有しており、前記第1の部分の長さは、前記デバイスが拡張されるときに、前記第2の終端部が前記第1の部分の前記長手方向軸に対して実質的に平行な線に沿って前記第1の終端部と軸方向に整列されるように、前記第2の部分の長さと実質的に同じである、請求項19に記載のデバイス。
- 前記延伸部材が、前記固着部材における第1の終端部、および自由な第2の終端部を有しており、前記第1の部分の長さは、前記デバイスが拡張されるときに、前記第2の終端部が前記第1の部分の前記長手方向軸に対して実質的に平行な線に沿って前記第1の終端部の半径方向外方に、かつそれから離間するように、前記第2の部分の長さよりも大きい、請求項19に記載のデバイス。
- 前記延伸部材が、前記固着部材における第1の終端部、および自由な第2の終端部を有しており、前記第1の部分の長さは、前記デバイスが拡張されるときに、前記第2の終端部が前記第1の部分の前記長手方向軸に対して実質的に平行な線に沿って前記第1の終端部の半径方向内方に、かつそれから離間するように、前記第2の部分の長さよりも小さい、請求項19に記載のデバイス。
- 拡張構成において、前記第19の部分および前記第2の部分は、前記第1の部分が前記第2の部分に対して角度を有しないように真っ直ぐな構成を有している、請求項19に記載のデバイス。
- 人工心臓弁デバイスであって、
内部を有する半径方向に拡張可能なフレームを有しており、かつ上流部分および下流部分を有している、固着部材であって、前記上流部分が、対象の心臓弁の生来の輪に、および/またはその下流に位置する組織を外方に押圧するように構成されており、かつ前記組織の形状に適合するように少なくとも部分的に変形可能であるように構成されている、組織固定部分を含む、固着部材と、
固着部材に対して位置付けられており、かつ血流が内部を通って遮断される閉鎖位置、および血流が上流部分から下流部分に向かって流れ方向に内部を通過することを可能にする開放位置から移動可能である少なくとも1つの弁尖を有している、弁であって、弁は、組織固定部分が組織の形状に適合するように変形されるときに、弁が適格性を維持するように、固着部材の組織固定部分から内方に離間する、弁と、
前記固着部材における第1の終端部、および第2の自由な終端部を有している、延伸部材であって、
前記延伸部材は、前記延伸部材が概ね真っ直ぐな構成で延在し、かつ前記第2の自由な終端部が第1の距離だけ前記第1の終端部から離間する、送達構成を有しており、
前記延伸部材は、前記延伸部材が前記固着部材から遠位に離れて延在し、反転した遠位部分を有し、かつ前記第2の自由な終端部が前記第1の距離よりも小さい第2の距離だけ前記第1の終端部から離間する、展開構成を有している、延伸部材と、を含む、人工心臓弁デバイス。 - 前記延伸部材が、可撓性ウェブと、前記延伸部材の長さの少なくとも一部分に沿って延在する支持部材と、を含んでおり、前記支持部材が、前記ウェブに取り付けられている、請求項26に記載のデバイス。
- 人工心臓弁デバイスを展開するための方法であって、
生来の心臓弁輪に送達カテーテルの遠位部分を位置付けることと、
人工心臓弁デバイスを前記送達カテーテルの前記遠位部分に送達することであって、前記人工心臓弁デバイスは、前記デバイスが展開されるときに前記輪の上流側に位置付けられるように構成された縁部を有しており、前記縁部が、第1の部分と、送達の間に前記第1の部分の遠位に位置付けられる第2の部分と、を有している、送達することと、
前記送達カテーテルを近位方向に引き出し、それにより、(a)前記第1の部分の遠位端部が、前記展開されたデバイスの中心長手方向軸に対して第1の方向に移動し、かつ(b)前記第2の部分の遠位端部が、前記第1の方向とは反対の前記中心長手方向軸に対して第2の方向に移動するように、前記縁部をそれ自体の上に折り返すことを可能にすることと、を含む、方法。 - 前記送達カテーテルを近位方向に引き出すことは、(a)前記第1の部分の遠位端部が前記展開されたデバイスの前記中心長手方向軸から離れて移動し、かつ(b)前記第2の部分の遠位端部が前記中心長手方向に向かって移動するように、前記縁部をそれ自体の上に折り返すことを可能にする、請求項28に記載の方法。
- 前記送達カテーテルを近位方向に引き出すことは、(a)前記第1の部分の遠位端部が前記展開されたデバイスの前記中心長手方向軸に向かって移動し、かつ(b)前記第2の部分の遠位端部が前記中心長手方向から離れて移動するように、前記縁部をそれ自体の上に折り返すことを可能にする、請求項28に記載の方法。
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