JP7222462B2 - 医療用デバイス - Google Patents
医療用デバイス Download PDFInfo
- Publication number
- JP7222462B2 JP7222462B2 JP2020081112A JP2020081112A JP7222462B2 JP 7222462 B2 JP7222462 B2 JP 7222462B2 JP 2020081112 A JP2020081112 A JP 2020081112A JP 2020081112 A JP2020081112 A JP 2020081112A JP 7222462 B2 JP7222462 B2 JP 7222462B2
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- Prior art keywords
- membrane
- stent
- mechanically expandable
- medical device
- expandable device
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
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- A61B17/12118—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm for positioning in conjunction with a stent
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- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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- A61F2250/0037—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in height or in length
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- A—HUMAN NECESSITIES
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- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
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Description
本発明は、動脈瘤を処置するために身体の血管中に挿入されるための医療用デバイスに関する。
血管の疾患は、出血、血管の閉塞を引き起こすアテローム性動脈硬化症、血管奇形および腫瘍を含む。脳内の血管閉塞または動脈瘤の破裂は、脳卒中を引き起こす。頭蓋内動脈によって供給される動脈瘤は、脳内で、それらの塊およびサイズが、脳卒中または脳卒中の症状を引き起こし、動脈瘤の除去またはその他の治療的介入のために手術を必要とする点まで成長し得る。
第1の好ましい局面では、動脈瘤を処置するために身体の脈管中に挿入される医療用デバイスが提供され、このデバイスは、第1の位置から第2の位置に拡大可能な機械的に拡大可能なデバイスであって、上記第2の位置に、上記機械的に拡大可能なデバイスの外面が、上記脈管を通る流体経路を維持するようにこの脈管の内面と係合するように半径方向の外方に拡大される機械的に拡大可能なデバイス;およびこの機械的に拡大可能なデバイスの拡大に応答して第1の位置から第2の位置に拡大可能な膜であって、この第2の位置に拡大されるとき、上記動脈瘤の血液循環を妨害し、そしてこの膜の少なくとも一部分が上記機械的に拡大可能なデバイスに固定され、この第2の位置に拡大されるとき、上記機械的に拡大可能なデバイスに対するこの膜の位置を維持する膜を備える。
より特定すれば、本願発明は以下の項目に関し得る。
(項目1)
動脈瘤を処置するために身体の脈管中に挿入される医療用デバイスであって:
第1の位置から第2の位置に拡大可能な機械的に拡大可能なデバイスであって、上記第2の位置に、上記機械的に拡大可能なデバイスの外面が、上記脈管を通る流体経路を維持するように上記脈管の内面と係合するように半径方向の外方に拡大される機械的に拡大可能なデバイス;および
上記機械的に拡大可能なデバイスの拡大に応答して第1の位置から第2の位置に拡大可能な膜であって、上記第2の位置に拡大されるとき、上記動脈瘤の血液循環を妨害し、そして上記膜の少なくとも一部分が上記機械的に拡大可能なデバイスに固定され、上記第2の位置に拡大されるとき、上記機械的に拡大可能なデバイスに対する上記膜の位置を維持する膜、を備える、デバイス。
(項目2)
上記機械的に拡大可能なデバイスが、複数の相互連結するストラットであってそれらの間に介在空間を有するストラットによって規定される、ほぼ管状の構造を備える、項目1に記載のデバイス。
(項目3)上記膜が、生体適合性かつエラストマー性ポリマーから作製される、項目1に記載のデバイス。
(項目4)
上記膜が、約20~100ミクロンのポアまたは穴サイズを備えた約0.0254mm~0.127mm(0.001~0.005インチ)の厚みを有する、項目1に記載のデバイス。
(項目5)
上記膜が、ポリマー性材料または生分解性材料から作製される、項目1に記載のデバイス。
(項目6)
上記生分解性材料が、薬物または試薬と混合された複数の下層を形成する、項目5に記載のデバイス。
(項目7)
上記膜が、等方性拡大をし得る、項目1に記載のデバイス。
(項目8)
上記膜が、上記デバイスの外面上に配置される、項目1に記載のデバイス。
(項目9)
上記膜が、上記デバイスを完全に取り囲む、項目1に記載のデバイス。
(項目10)
上記膜が、上記デバイスの一部分を周縁方向に取り囲む、項目1に記載のデバイス。
(項目11)
上記膜が、上記デバイスの一部分を覆う、項目1に記載のデバイス。
(項目12)
上記膜が、非多孔性および非透過性であり、上記動脈瘤への血液循環を防ぐ、項目1に記載のデバイス。
(項目13)
上記膜が、固形ポリマーから作製される、項目12に記載のデバイス。
(項目14)
上記膜が、透過性および多孔性である、項目1に記載のデバイス。
(項目15)
上記膜が、主要脳動脈の穿孔および顕微鏡的分枝への血液供給が許容されるが、上記動脈瘤への血液供給が防がれるように穴またはポアを有する、項目14に記載のデバイス。
(項目16)
上記膜が、サイズが20~100ミクロンの間のポアを有する、項目15に記載のデバイス。
(項目17)
上記膜が、サイズが20~100ミクロンの間の製作された穴を有する、項目15に記載のデバイス。
(項目18)
上記穴が、レーザー穿孔によって製作される、項目17に記載のデバイス。
(項目19)
上記ポアまたは穴の間の距離が、100μmより小さい、項目16または17に記載のデバイス。
(項目20)
上記膜が、上記機械的に拡大可能なデバイスに固定される複数のポリマー性ストリップを備える、項目14に記載のデバイス。
(項目21)
上記ストリップが0.075mmより短く、そして隣接するストリップ間の距離が100μmより小さい、項目20に記載のデバイス。
(項目22)上記膜が、上記機械的に拡大可能なデバイスに固定されるメッシュを備える、項目14に記載のデバイス。
(項目23)
上記メッシュの空間が100μmより短く、そして上記メッシュの幅が0.025~0.050mmの間である、項目22に記載のデバイス。
(項目24)
上記動脈瘤が、通常サイズ、巨大または広い頸部の動脈瘤である、項目1に記載のデバイス。
(項目25)
上記機械的に拡大可能なデバイスが、自己拡大可能、またはバルーンで拡大可能である、項目1に記載のデバイス。
(項目26)
上記機械的に拡大可能なデバイスが、ステントである、項目1に記載のデバイス。
(項目27)
上記膜が上記ほぼ管状の構造によって支持され、そして少なくとも1つのストラットに取り付けられる、項目2に記載のデバイス。
(項目28)
上記膜が、上記ステントの公証初期直径に類似の直径を有する管状であり、そしてここで、上記膜が、上記ステントの外面に配置されるか、上記ステント間のストラット間に浸漬被覆または噴霧によって導入される、項目26に記載のデバイス。
(項目29)
上記膜が、上記ステントの外面の一部分上に配置された管状構造のセグメントである、項目26に記載のデバイス。
(項目30)
上記少なくとも1つの試薬が、固形錠剤、液体または粉末からなる群から選択される任意の1つの形態である、項目6に記載のデバイス。
(項目31)
少なくとも1つの放射線不透過性マーカーが上記機械的に拡大可能なデバイス上に提供され、挿入の間またはその後に上記デバイスの可視性を改善する、項目1に記載のデバイス。
(項目32)
上記少なくとも1つの放射線不透過性マーカーが、金または白金から作製される、項目31に記載のデバイス。
(項目33)
中央放射線不透過性マーカーおよび端部放射線不透過性マーカーが、上記機械的に拡大可能なデバイス上に提供される、項目31に記載のデバイス。
(項目34)
少なくとも2つの身体の脈管の間の2分枝または3分枝動脈瘤を処置するための医療用デバイスであって:
第1の脈管中に挿入するための第1の機械的に拡大可能なデバイス;
第2の脈管中に挿入するための第2の機械的に拡大可能なデバイス;
ここで、機械的に拡大可能なデバイスの各々は、第1の位置から第2の位置に拡大可能であり、上記第2の位置に、上記機械的に拡大可能なデバイスの外面が、上記脈管を通る流体経路を維持するように上記脈管の内面と係合するように半径方向の外方に拡大される機械的に拡大可能である;および
上記機械的に拡大可能なデバイスの拡大に応答して第1の位置から第2の位置に拡大可能な膜であって、上記第2の位置に拡大されるとき、上記動脈瘤の血液循環を妨害し、そして上記膜の少なくとも一部分が上記機械的に拡大可能なデバイスに固定され、上記第2の位置に拡大されるとき、上記機械的に拡大可能なデバイスに対する上記膜の位置を維持する膜、を備える、デバイス。
(項目35)
項目1に記載の医療用デバイスを作製する方法であって:
ほぼ管状の構造をマンドレル上に配置する工程;および
上記膜を上記機械的に拡大可能なデバイスの外面上に配置する工程、を包含する、項目1に記載の医療用デバイスを作製する方法。
(項目36)
項目26に記載の医療用デバイスを作製する方法であって:
上記ほぼ管状の構造をマンドレル上に配置する工程;および
上記膜を上記ステントのストラット間に取り込む工程を包含する、項目26に記載の医療用デバイスを作製する方法。
(項目37)
上記配置する工程が:噴霧すること、縫合糸、積層、接着、熱および浸漬被覆からなる群から選択される任意の1つである、項目35または36に記載の方法。
(項目38)
上記ステントが、送達カテーテルによって上記動脈瘤に送達される、項目26に記載のデバイス。
移植可能な医療用デバイスは、ヒト身体の血管内系内の所望の部位に薬物または試薬を送達するための物理的構造を含む。移植可能な医療用デバイスは、特定の適用に依存して多様化した形状および形態をとり得る。一般的な移植可能な医療用デバイスは、ステント、大静脈フィルター、移植片および動脈瘤コイルを含む。ステントが説明されるけれども、開示される構造および方法は、すべてのその他の移植可能な医療用デバイスに適用可能であることを注記する。
- 頭蓋内ステント202は、圧縮された送達モードで0.508mm(0.020インチ)のプロフィールを有する。
- 頭蓋内ステント202は、ステントプロフィール0.508mm~0.559mm(0.020インチ~0.022インチ)を有する0.356mm~0.406mm(0.014インチ~0.016インチ)のような低プロフィールをもつ送達カテーテル上に圧縮されるように設計される。頭蓋内ステント202は、一様な材料分布および壁適用範囲を有し、必要な脈管支持を生成する。材料比は、展開直径に依存して10~17%の範囲である。
- 頭蓋内ステント202は、0.0711mm(0.0028インチ)よりは大きくないストラット厚みおよび幅を有する。ストラット寸法は、最も少ない侵入性ステント材料容量を生成し、そして脈管損傷スコアを減少するように選択される。
Claims (16)
- 頭蓋内の動脈瘤を処置するための身体脈管中への挿入用の医療用デバイスであって、該医療用デバイスは、以下:
収縮位置から拡大位置に拡大可能な機械的に拡大可能なデバイスであって、該拡大位置では、該機械的に拡大可能なデバイスの外表面は、該身体脈管の内表面に係合し、該機械的に拡大可能なデバイスは、複数の周縁リング、複数の第1の長手方向ストラット、複数の第2の長手方向ストラット、および複数の第3のストラットを備え、該第1の長手方向ストラットの各々が2つの軸方向で隣接する周縁リングのみを連結し、そして該第2の長手方向ストラットの各々が3つの軸方向に隣接する周縁リングを連結し、該第3の長手方向ストラットの各々が2つの軸方向に隣接する周縁リングを連結し、個々の該第3の長手方向ストラットが該2つの軸方向に隣接する周縁リングの1つの周縁リングに、該1つの周縁リングが放射線不透過性マーカーに連結される点で連結され、該第1の長手方向ストラットの少なくともいくつかの長手方向で隣接する対が、該第2の長手方向ストラットの1つによって長手方向で分離されておらず、ここで該複数の周縁リングの隣接する周縁リングが互いに入れ子にならないように間隔を置いて離れている、機械的に拡大可能なデバイス:および
0.0254mm(0.001インチ)未満である厚みを有する多孔性膜であって、該機械的に拡大可能なデバイスの拡大に応答して拡大可能である多孔性膜を備え、該多孔性膜は:
(i)該膜の遠位端から該膜の近位端まで延びる長さにわたって実質的に均一な多孔度、かつ75ミクロン未満である該膜の隣接するポアの境界の間の距離を有し;
(ii)該機械的に拡大可能なデバイスに、該膜の近位端が該機械的に拡大可能なデバイスの近位端の近位にあり、そして該膜の遠位端が該機械的に拡大可能なデバイスの遠位端の近位にあるように固定され;そして
(iii)該動脈瘤に隣接する身体脈管中で拡大するとき、該身体脈管から該動脈瘤中への血流を低減し、そして小毛細管の血液供給機能を阻害しないように該膜の長さに沿って該膜のポアを通る該小毛細管への血液供給を許容するように構成される、医療用デバイス。 - 頭蓋内の動脈瘤を処置するための身体脈管中への挿入用の医療用デバイスであって、該医療用デバイスは、以下:
第1の位置から第2の位置に拡大可能な機械的に拡大可能なデバイスであって、該第2の位置では、該機械的に拡大可能なデバイスの外表面は、該身体脈管を通る流体経路を維持するように該身体脈管の内表面に係合するようなサイズであって、かつ係合するように構成され、該機械的に拡大可能なデバイスは、複数の周縁リング、複数の第1の長手方向ストラット、複数の第2の長手方向ストラット、および複数の第3のストラットを備え、該第1の長手方向ストラットの各々が2つの軸方向で隣接する周縁リングのみを連結し、そして該第2の長手方向ストラットの各々が3つの軸方向で隣接する周縁リングを連結し、該第3の長手方向ストラットの各々が2つの軸方向に隣接する周縁リングを連結し、個々の該第3の長手方向ストラットが該2つの軸方向に隣接する周縁リングの1つの周縁リングに、該1つの周縁リングが放射線不透過性マーカーに連結される点で連結され、該第1の長手方向ストラットの少なくともいくつかの長手方向で隣接する対が、該第2の長手方向ストラットの1つによって分離されておらず、ここで該複数の周縁リングの隣接する周縁リングが互いに入れ子にならないように間隔を置いて離れている、機械的に拡大可能なデバイス:および
該機械的に拡大可能なデバイスに固定され、実質的に均一な多孔度を有する多孔性膜であって、該膜は、0.0254mm(0.001インチ)未満である厚みを有し、該機械的に拡大可能なデバイスの拡大に応答して拡大可能であり、該機械的に拡大可能なデバイスが該第2の位置にあるとき、該膜は、20ミクロンと100ミクロンとの間のサイズのポア、および75ミクロン未満である該膜の隣接するポアの境界の間の距離を、該膜が該身体脈管から動脈瘤中への血流を低減し、そして該身体脈管から分岐する小分岐脈管への該膜のポアを通る血液供給を該小分岐脈管の血液供給機能を阻害しないように許容する、医療用デバイス。 - 前記膜が、ポリマー材料または生分解性材料から作製される、請求項1~2のいずれか1項に記載の医療用デバイス。
- 前記ポリマー材料または前記生分解性材料が、薬物または試薬と混合された複数の下層を形成する、請求項3に記載の医療用デバイス。
- 前記膜が、等方性拡大し得る、請求項1~2のいずれか1項に記載の医療用デバイス。
- 前記膜が、前記機械的に拡大可能なデバイスの外表面上に配置される、請求項1~2のいずれか1項に記載の医療用デバイス。
- 前記膜が、前記機械的に拡大可能なデバイスを完全に取り囲む、請求項1~2のいずれか1項に記載の医療用デバイス。
- 前記膜が、前記機械的に拡大可能なデバイスの一部を周縁方向に取り囲む、請求項1~2のいずれか1項に記載の医療用デバイス。
- 前記膜が、前記機械的に拡大可能なデバイスの一部を覆う、請求項1~2のいずれか1項に記載の医療用デバイス。
- 前記膜が、前記機械的に拡大可能なデバイスに固定された複数のポリマーストリップを含む、請求項1~2のいずれか1項に記載の医療用デバイス。
- 前記ストリップの幅が、0.075mm未満であり、そして隣接するストリップ間の距離が、100μm未満である、請求項10に記載の医療用デバイス。
- 上記機械的に拡大可能なデバイスが、自己拡大可能であるか、またはバルーンで拡大可能である、請求項1~2のいずれか1項に記載の医療用デバイス。
- 上記機械的に拡大可能なデバイスが、ステントを含む、請求項1~2のいずれか1項に記載の医療用デバイス。
- 前記少なくとも1つの放射線不透過性マーカーが、前記拡大可能なデバイス上に提供される、請求項1~2のいずれか1項に記載の医療用デバイス。
- 前記少なくとも1つの放射線不透過性マーカーが、金または白金である、請求項14に記載の医療用デバイス。
- 中央放射線不透過性マーカーおよび端部放射線不透過性マーカーが、前記機械的に拡大可能なデバイス上に提供される、請求項14に記載の医療用デバイス。
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2004
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- 2004-10-15 WO PCT/SG2004/000338 patent/WO2005094725A1/en active Application Filing
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- 2004-12-13 CN CNA2004800431878A patent/CN101394808A/zh active Pending
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- 2004-12-13 JP JP2007506113A patent/JP5046919B2/ja not_active Expired - Fee Related
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US8915952B2 (en) | 2014-12-23 |
WO2005094725A1 (en) | 2005-10-13 |
US9585668B2 (en) | 2017-03-07 |
JP2015062831A (ja) | 2015-04-09 |
CN101394808A (zh) | 2009-03-25 |
WO2005094726A1 (en) | 2005-10-13 |
JP2021000552A (ja) | 2021-01-07 |
JP2017023876A (ja) | 2017-02-02 |
JP2020114545A (ja) | 2020-07-30 |
JP5046919B2 (ja) | 2012-10-10 |
JP2014195733A (ja) | 2014-10-16 |
US20070100430A1 (en) | 2007-05-03 |
JP2023041948A (ja) | 2023-03-24 |
EP1732467A1 (en) | 2006-12-20 |
JP2013066749A (ja) | 2013-04-18 |
EP1734897A1 (en) | 2006-12-27 |
JP2007530213A (ja) | 2007-11-01 |
US20070191924A1 (en) | 2007-08-16 |
JP2011067663A (ja) | 2011-04-07 |
EP1734897A4 (en) | 2010-12-22 |
JP2019048106A (ja) | 2019-03-28 |
EP1732467A4 (en) | 2010-09-15 |
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