JP2020039925A - 下肢血管系を処置する装置及び方法 - Google Patents
下肢血管系を処置する装置及び方法 Download PDFInfo
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- JP2020039925A JP2020039925A JP2019220052A JP2019220052A JP2020039925A JP 2020039925 A JP2020039925 A JP 2020039925A JP 2019220052 A JP2019220052 A JP 2019220052A JP 2019220052 A JP2019220052 A JP 2019220052A JP 2020039925 A JP2020039925 A JP 2020039925A
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Classifications
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- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
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Abstract
Description
本願は、2015年5月21日に出願された米国特許出願第14/718427号、2015年3月23日に出願された米国仮特許出願第62/136755号、2014年9月8日に出願された米国仮特許出願第62/047558号、及び2014年6月19日に出願された米国仮特許出願第62/014554号の優先権の利益を主張する。これらの出願のそれぞれは、引用することによりその全体が本明細書の一部をなす。2014年2月28日に出願された国際出願PCT/US2014/019607号、2008年1月3日に出願された米国特許出願第11/662128号、2009年2月25日に出願され、2013年5月14日に米国特許第8,439,963号として発行された米国特許出願第12/297498号、及び2013年3月8日に出願された米国特許出願第13/791185号もそれぞれ、引用することによりその全体が本明細書の一部をなす。
本明細書に記載される方法及びシステムは、いくつかの実施形態に従って心臓血管手術において特定の有用性を示す。いくつかの態様が以下の非限定的な例によって更に示され、そこでは、システムは、冠動脈の閉塞後の心臓組織の逆行性灌流を可能にするように動脈と静脈との接続処置(PICVA)を行う臨床医によって用いられる。
米国合衆国における肢喪失者は200万人近くである。
肢喪失者のうち、主な原因は以下である:
血管疾患(54%)(糖尿病及び末梢動脈疾患(PAD))、
外傷(45%)、及び、
癌(2%未満)。
毎年、合衆国において約185000件の切断が行われている。
肢切断に伴う入院費は2007年において総計65億ドルを超えた。
切断後の生存率は多様な要因に基づき様々である。血管疾患(PAD及び糖尿病を含む)に起因する切断を受けた者は、30日での死亡率が9%〜15%と報告されており、長期生存率は1年が60%、3年が42%及び5年が35%〜45%である。
血行障害(dysvascular disease)で肢を喪失した者の半数近くが5年以内に死亡する。これは、結腸直腸癌、乳癌及び前立腺癌を患った者が被る5年死亡率よりも高い。 糖尿病を患った者のうち下肢切断を受けた者は、最大55%まで、2年〜3年以内にもう一本の脚の切断が必要となる。
結果:
包括的な検討のために総計56の試験が選択された。特定されたランダム化比較試験(RCT)はなかった。228人の患者を含む7つの患者群が選択基準と合致した。1年全体の肢温存は71%(95% CI:64%〜77%)であり、1年の二次開存率は46%(95% CI:39%〜53%)であった。大切断術を回避した患者の大部分は首尾よく創傷治癒し、休息痛が現れず、深刻な合併症がなかった。
結論:
限定された証拠に基づき、静脈の動脈化は、「手術不能な」慢性重症虚血肢を患った患者に大切断術を行う前の実行可能な代案とみなすことができる。
Claims (113)
- 第1の血管と第2の血管との間の瘻孔に埋め込み可能であり、該第1の血管から該第2の血管に血液の流れを迂回させることによって該第1の血管内の閉塞を処置する低孔隙率のプロテーゼであって、
ともに織組構造体に織組された複数のフィラメントと、
近位端部と、
遠位端部と、
前記近位端部と前記遠位端部との間の側壁と、
前記側壁によって画定される内腔と、
第1の血管内に留置するように構成された第1の長手方向セクションであって、円筒形であり、第1の直径を有する、第1の長手方向セクションと、
第2の血管内に留置するように構成された第2の長手方向セクションであって、円錐台形であり、前記第1の直径よりも大きい第2の直径までテーパーが付いている、第2の長手方向セクションと、
前記第1の長手方向セクションと前記第2の長手方向セクションとの間の第3の長手方向セクションと、
を備え、前記第1の長手方向セクション及び前記第2の長手方向セクションのうちの少なくとも一方は、血液の流れを、該プロテーゼの前記側壁を通過して灌流することなく該プロテーゼの前記内腔を通過するよう方向付けるように構成された孔隙率を有する、プロテーゼ。 - 前記孔隙率は0%〜50%である、請求項1に記載のプロテーゼ。
- 前記孔隙率は5%〜50%である、請求項1に記載のプロテーゼ。
- グラフト材を備えない、請求項1に記載のプロテーゼ。
- 前記第1の長手方向セグメントは前記孔隙率を有し、前記第2の長手方向セグメントは前記孔隙率とは異なる第2の孔隙率を有する、請求項1に記載のプロテーゼ。
- 前記第2の長手方向セグメントは、前記第1の長手方向セグメントとは異なるパラメーターを有する、請求項5に記載のプロテーゼ。
- 前記パラメーターは、編組角度、フィラメント直径、フィラメント材料、織組構造体直径、織組構造体形状及び補助的な支持構造体のうちの少なくとも1つを含む、請求項6に記載のプロテーゼ。
- 補助的な支持構造体を更に備える、請求項1に記載のプロテーゼ。
- 前記補助的な支持構造体は、ともに第2の織組構造体に織組された第2の複数のフィラメントを含み、該第2の複数のフィラメントは、前記複数のフィラメントとは異なるパラメーターを有する、請求項8に記載のプロテーゼ。
- 前記パラメーターは、編組角度、フィラメント直径、織組構造体直径及びフィラメント材料のうちの少なくとも1つを含む、請求項9に記載のプロテーゼ。
- 前記補助的な支持構造体は、カットされたハイポチューブを含む、請求項8に記載のプロテーゼ。
- 前記複数のフィラメントは、形状記憶材料を含むフィラメントと、生体適合性ポリマーを含むフィラメントとを含む、請求項1に記載のプロテーゼ。
- 前記第3の長手方向セクションは円錐台形である、請求項1に記載のプロテーゼ。
- 前記第3の長手方向セクションは円筒形である、請求項1に記載のプロテーゼ。
- 前記第3の長手方向セグメントは、前記第1の長手方向セグメント及び前記第2の長手方向セグメントのうちの少なくとも一方とは異なるパラメーターを有する、請求項1に記載のプロテーゼ。
- 前記パラメーターは、編組角度、フィラメント直径、フィラメント材料、織組構造体直径、織組構造体形状及び補助的な支持構造体のうちの少なくとも1つを含む、請求項15に記載のプロテーゼ。
- 請求項1〜16のいずれか1項に記載の前記プロテーゼと、
瘻孔形成システムと、
を備える、キット。 - 弁無力化装置を更に備える、請求項17に記載のキット。
- 請求項1〜16のいずれか1項に記載の前記プロテーゼと、
弁無力化装置と、
を備える、キット。 - 前記弁無力化装置は、逆行の弁膜切開刀を含む、請求項19に記載のキット。
- 前記弁無力化装置はバルーンを含む、請求項19に記載のキット。
- 前記弁無力化装置は静脈ステントを含む、請求項19に記載のキット。
- 前記静脈ステントは、被覆材又はグラフトを備える、請求項22に記載のキット。
- 前記静脈ステントは前記プロテーゼと一体である、請求項22に記載のキット。
- 前記プロテーゼを含むプロテーゼ送達システムを備える、請求項19に記載のキット。
- 請求項1〜16のいずれか1項に記載の前記プロテーゼを、前記第1の血管と前記第2の血管との間の瘻孔において展開させることを含む、方法。
- 閉塞を含む第1の血管から第2の血管に流体の流れを迂回させる方法であって、
プロテーゼを前記第1の血管と前記第2の血管との間の瘻孔において少なくとも部分的に展開させることであって、前記プロテーゼは、50%未満の孔隙率を有する織組構造体にともに織組された複数のフィラメントを含むこと、
を含み、前記埋め込み型プロテーゼを展開した後、血液は、前記第1の血管から前記プロテーゼを通過して前記第2の血管に迂回される、方法。 - 前記第1の血管は動脈であり、前記血管路は静脈である、請求項27に記載の方法。
- 前記瘻孔を拡大させることを含む、請求項27に記載の方法。
- 前記第1の血管は前記第2の血管に対して平行である、請求項27に記載の方法。
- 前記プロテーゼを展開させることは、前記プロテーゼを自己拡張させることを含む、請求項27に記載の方法。
- 前記プロテーゼを展開させることは、バルーンが前記プロテーゼを拡張させることを含む、請求項27に記載の方法。
- 前記プロテーゼを展開させることは、
前記織組構造体を展開させることと、
補助的な支持構造体を展開させることと、
を含む、請求項27に記載の方法。 - 前記補助的な支持構造体を展開させることは、前記織組構造体を展開させる前に行われる、請求項33に記載の方法。
- 前記補助的な支持構造体を展開させることは、前記織組構造体を展開させた後に行われる、請求項33に記載の方法。
- 前記補助的な支持構造体は、第2の織組構造体に織組された第2の複数のフィラメントを含む、請求項33に記載の方法。
- 前記補助的な支持構造体は、カットされたハイポチューブを含む、請求項33に記載の方法。
- 前記瘻孔を形成することを更に含む、請求項27に記載の方法。
- 前記瘻孔を形成することは、
前記第1の血管に発射カテーテルを挿入することであって、該発射カテーテルは、
超音波送信トランスデューサーと、
該発射カテーテルから径方向に延出するように構成された針と、
を備えることと、
前記第2の血管に標的カテーテルを挿入することであって、該標的カテーテルは超音波受信トランスデューサーを備えることと、
前記超音波送信トランスデューサーから超音波信号を送信することと、
前記超音波信号を送信している間、かつ、前記超音波信号が前記超音波受信トランスデューサーによって受信されるまで、以下の:
前記発射カテーテルを回転させることと、
前記発射カテーテルを長手方向に移動させることと、
のうちの少なくとも一方と、
前記超音波信号が前記超音波受信トランスデューサーによって受信された後、前記発射カテーテルから前記針を延出させることと、
を含み、前記針を延出させることは、
前記第2の血管から出すことと、
前記第1の血管と前記第2の血管との間の間質組織を横断させることと、
前記第2の血管に入れることと、
を含む、請求項38に記載の方法。 - 前記第2の血管内の弁を無機能化することを更に含む、請求項27〜39のいずれか1項に記載の方法。
- 前記第2の血管内の弁を無機能化することは、逆行の弁膜切開刀を用いて前記弁を切除することを含む、請求項40に記載の方法。
- 前記第2の血管内の弁を無機能化することは、バルーンを膨張させることを含む、請求項40に記載の方法。
- 前記第2の血管内の弁を無機能化することは、一時的なステントを拡張させることを含む、請求項40に記載の方法。
- 前記第2の血管内の弁を無機能化することは、前記第2の血管を埋め込み型ステントで裏打ちすることを含む、請求項40に記載の方法。
- 前記ステントは、被覆材又はグラフトを備え、前記第2の血管を裏打ちすることは、前記第2の血管の側副血管を覆うことを含む、請求項44に記載の方法。
- 前記ステントは前記プロテーゼと別個である、請求項44に記載の方法。
- 前記ステントは、前記第2の血管の長さに沿って前記プロテーゼから離間する、請求項46に記載の方法。
- 前記ステントの端部は前記プロテーゼの端部に当接する、請求項46に記載の方法。
- 前記ステントの近位セグメントは、長手方向において前記プロテーゼの遠位セグメントに重なる、請求項46に記載の方法。
- 前記ステントの前記近位セグメントは、前記プロテーゼの前記遠位セグメントの径方向内側にある、請求項49に記載の方法。
- 前記プロテーゼを展開させた後に前記ステントを拡張させることを含む、請求項50に記載の方法。
- 前記プロテーゼの前記部分は、前記ステントの前記部分の径方向内側にある、請求項49に記載の方法。
- 前記プロテーゼを展開させた後に前記ステントを拡張させることを含む、請求項52に記載の方法。
- 前記ステントは前記プロテーゼと一体である、請求項44に記載の方法。
- 前記第2の血管内の前記弁を無機能化することは、
逆行の弁膜切開刀を用いて前記弁を切除することと、
前記第2の血管をステントで裏打ちすることと、
を含む、請求項40に記載の方法。 - 前記第2の血管内の前記弁を無機能化することは、
逆行の弁膜切開刀を用いて前記弁を切除することと、
バルーンを膨張させることと、
一時的なステントを拡張させることと、
前記第2の血管を埋め込み型ステントで裏打ちすることと、
のうちの少なくとも1つを含む、請求項40に記載の方法。 - 下肢における動脈と静脈との間の吻合部の開存性を維持する埋め込み型プロテーゼであって、
下肢動脈内に滞留するように構成された第1のセクションと、
下肢静脈内に滞留するように構成された第2のセクションと、
長手方向において前記第1のセクションと前記第2のセクションとの間にある第3のセクションであって、前記動脈と前記静脈との間の吻合部の開存性を維持するように構成されている、第3のセクションと、
を備える、プロテーゼ。 - 前記第1のセクションは、前記下肢動脈の前記壁を並置するように構成されている、請求項57に記載のプロテーゼ。
- 前記第1のセクションは返しを有する、請求項57に記載のプロテーゼ。
- 前記第2のセクションは、前記下肢静脈の前記壁を並置するように構成されている、請求項57に記載のプロテーゼ。
- 前記第2のセクションは返しを有する、請求項57に記載のプロテーゼ。
- 前記第1のセクション、前記第2のセクション及び前記第3のセクションのうちの少なくとも1つは、自己拡張型である、請求項57に記載のプロテーゼ。
- 前記第1のセクション、前記第2のセクション及び前記第3のセクションのうちの少なくとも1つは、バルーン拡張可能である、請求項57に記載のプロテーゼ。
- 前記第2のセクションの長さは、前記第1のセクションの長さよりも大きい、請求項57に記載のプロテーゼ。
- 前記第2のセクションは、前記下肢静脈内の弁を無力化するように構成されている、請求項57〜64のいずれか1項に記載のプロテーゼ。
- 前記第2のセクションは、前記下肢静脈の側副血管を覆うように構成されている、請求項65に記載のプロテーゼ。
- 請求項57〜66のいずれか1項に記載の前記プロテーゼを、前記下肢動脈と前記下肢静脈との間の吻合部において展開させることを含む、方法。
- 下肢における第1の血管から第2の血管に流体の流れを迂回させる方法であって、
前記第1の血管と前記第2の血管との間に孔を形成することと、
前記孔を拡張して吻合部を形成することと、
を含む、方法。 - 前記孔を形成することは、前記第1の血管から前記第2の血管内にワイヤを押し進めることを含む、請求項68に記載の方法。
- 前記孔を形成することは、前記第1の血管から前記第2の血管内に針を横断させることを含む、請求項68に記載の方法。
- 前記孔を拡張させることは、少なくとも1つのバルーンを用いて前記孔を拡大させることを含む、請求項68に記載の方法。
- 前記孔を拡大させることは、徐々に大きい直径を有する複数のバルーンを用いることを含む、請求項71に記載の方法。
- 前記複数のバルーンのうちの第1のバルーンは、1.5mmの直径を有し、前記複数のバルーンのうちの最後のバルーンは、3mmの直径を有する、請求項72に記載の方法。
- 前記複数のバルーンは、1.5mmの直径を有する第1のバルーンと、2.0mmの直径を有する第2のバルーンと、2.5mmの直径を有する第3のバルーンと、3.0mmの直径を有する第3のバルーンとを含む、請求項72に記載の方法。
- 前記複数のバルーンを用いて前記孔を拡大させることは、徐々に高いバルーン膨張圧を用いることを含む、請求項71に記載の方法。
- プロテーゼを配置することを含まない、請求項68に記載の方法。
- 前記第1の血管及び前記第2の血管の位置は、該第1の血管及び該第2の血管を囲む解剖学的構造によって維持される、請求項76に記載の方法。
- 前記吻合部にプロテーゼを配置することを更に含む、請求項68に記載の方法。
- 前記吻合部に前記プロテーゼを配置することは、前記プロテーゼを前記第1の血管及び前記第2の血管のうちの少なくとも一方に留置することを含む、請求項78に記載の方法。
- 前記第1の血管は外側足底動脈を含み、前記第2の血管は外側足底静脈を含む、請求項68〜79のいずれか1項に記載の方法。
- 第1の血管内の閉塞を処置する埋め込み型プロテーゼであって、
ともに織組構造体に織組された複数のフィラメントと、
近位端部と、
遠位端部と、
前記近位端部と前記遠位端部との間の側壁と、
前記側壁によって画定される内腔と、
流体の流れを、前記側壁を通過して灌流することなく前記内腔を通過するよう方向付けるのに十分な孔隙率と、
を備える、プロテーゼ。 - 前記孔隙率は0%〜50%である、請求項81に記載のプロテーゼ。
- 前記孔隙率は5%〜50%である、請求項81に記載のプロテーゼ。
- グラフト材を備えない、請求項81に記載のプロテーゼ。
- 前記孔隙率を有する第1の長手方向セグメントと、
前記孔隙率とは異なる第2の孔隙率を有する第2の長手方向セグメントと、を備える、請求項81に記載のプロテーゼ。 - 前記第2の長手方向セグメントは、前記第1の長手方向セグメントとは異なるパラメーターを有する、請求項85に記載のプロテーゼ。
- 前記パラメーターは、編組角度、フィラメント直径、フィラメント材料、織組構造体直径、織組構造体形状及び補助的な支持構造体のうちの少なくとも1つを含む、請求項86に記載のプロテーゼ。
- 補助的な支持構造体を更に備える、請求項81に記載のプロテーゼ。
- 前記補助的な支持構造体は、ともに第2の織組構造体に織組された第2の複数のフィラメントを含み、該第2の複数のフィラメントは、前記複数のフィラメントとは異なるパラメーターを有する、請求項88に記載のプロテーゼ。
- 前記パラメーターは、編組角度、フィラメント直径、織組構造体直径及びフィラメント材料のうちの少なくとも1つを含む、請求項89に記載のプロテーゼ。
- 前記補助的な支持構造体は、カットされたハイポチューブを含む、請求項88に記載のプロテーゼ。
- 前記複数のフィラメントは、形状記憶材料を含むフィラメントと、生体適合性ポリマーを含むフィラメントとを含む、請求項81に記載のプロテーゼ。
- 前記第1の長手方向セグメントと前記第2の長手方向セグメントとの間の第3の長手方向セグメントを更に備える、請求項81に記載のプロテーゼ。
- 前記第3の長手方向セグメントは、前記第1の長手方向セグメント及び前記第2の長手方向セグメントのうちの少なくとも一方とは異なるパラメーターを有する、請求項93に記載のプロテーゼ。
- 前記パラメーターは、編組角度、フィラメント直径、フィラメント材料、織組構造体直径、織組構造体形状及び補助的な支持構造体のうちの少なくとも1つを含む、請求項94に記載のプロテーゼ。
- 第1の血管内の閉塞を処置する埋め込み型プロテーゼであって、
近位端部と、
遠位端部と、
前記近位端部と前記遠位端部との間の側壁と、
前記側壁によって画定される内腔と、
第1の腔内に留置するように構成された第1の長手方向セクションと、
第2の腔内に留置するように構成された第2の長手方向セクションと、
前記第1の長手方向セクションと前記第2の長手方向セクションとの間の第3の長手方向セクションと、
を備え、前記第1の長手方向セクション及び前記第3の長手方向セクションのうちの少なくとも一方は、流体の流れを、前記側壁を通過して灌流することなく前記内腔を通過するよう方向付けるのに十分な孔隙率を有する、プロテーゼ。 - 前記孔隙率は0%〜50%である、請求項96に記載のプロテーゼ。
- 前記孔隙率は5%〜50%である、請求項96に記載のプロテーゼ。
- グラフト材を備えない、請求項96に記載のプロテーゼ。
- 前記第2の長手方向セグメントは、前記第1の長手方向セグメントとは異なるパラメーターを有する、請求項96に記載のプロテーゼ。
- 前記パラメーターは、編組角度、フィラメント直径、フィラメント材料、直径、形状及び補助的な支持構造体のうちの少なくとも1つを含む、請求項100に記載のプロテーゼ。
- 前記第3の長手方向セグメントは、前記孔隙率とは異なる第2の孔隙率を有する、請求項96に記載のプロテーゼ。
- 前記第1の長手方向セグメントはバルーン拡張可能であり、前記第2の長手方向セグメントは自己拡張型である、請求項96に記載のプロテーゼ。
- ともに織組構造体に織組された複数のフィラメントを含む、請求項96に記載のプロテーゼ。
- 前記複数のフィラメントは、形状記憶材料を含むフィラメントと、生体適合性ポリマーを含むプロテーゼとを備える、請求項104に記載のプロテーゼ。
- 補助的な支持構造体を更に備える、請求項96に記載のプロテーゼ。
- 前記第1の長手方向セクションは円筒形であり、第1の直径を有し、
前記第2の長手方向セクションは円筒形であり、前記第1の直径よりも大きい第2の直径を有し、
前記第3の長手方向セクションは円錐台形であり、前記第1の直径から前記第2の直径までテーパーが付いている、請求項96に記載のプロテーゼ。 - 前記第1の長手方向セクションは円筒形であり、第1の直径を有し、
前記第2の長手方向セクション及び前記第3の長手方向セクションは円錐台形であり、前記第1の直径から該第1の直径よりも大きい第2の直径までテーパーが付いている、請求項96に記載のプロテーゼ。 - 前記第3の長手方向セクションは、前記第1の長手方向セクション及び前記第2の長手方向セクションのうちの少なくとも一方とは異なるパラメーターを有する、請求項96に記載のプロテーゼ。
- 前記パラメーターは、編組角度、フィラメント直径、フィラメント材料、直径、形状及び補助的な支持構造体のうちの少なくとも1つを含む、請求項109に記載のプロテーゼ。
- 第1の血管内の閉塞を処置する埋め込み型プロテーゼであって、
ともに織組構造体に織組された複数のフィラメントと、
近位端部と、
遠位端部と、
前記近位端部と前記遠位端部との間の側壁と、
前記側壁によって画定される内腔と、
5%〜50%の孔隙率と、
を備える、プロテーゼ。 - 前記孔隙率は、流体の流れを、前記内腔を通過するよう方向付けるように構成されている、請求項111に記載のプロテーゼ。
- 前記孔隙率を有する第1の長手方向セグメントと、
前記孔隙率とは異なる第2の孔隙率を有する第2の長手方向セグメントと、
を備える、請求項111に記載のプロテーゼ。
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CN107072773A (zh) | 2017-08-18 |
EP3157464B1 (en) | 2020-02-12 |
DK3718507T3 (da) | 2024-10-28 |
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EP3718507A1 (en) | 2020-10-07 |
JP6962994B2 (ja) | 2021-11-05 |
CN107072773B (zh) | 2020-07-17 |
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US9545263B2 (en) | 2017-01-17 |
JP6629763B2 (ja) | 2020-01-15 |
US20170128704A1 (en) | 2017-05-11 |
CN111803240A (zh) | 2020-10-23 |
SG11201609734VA (en) | 2017-01-27 |
ES2790651T3 (es) | 2020-10-28 |
SG10201809298XA (en) | 2018-11-29 |
CN111803241A (zh) | 2020-10-23 |
WO2015195668A1 (en) | 2015-12-23 |
JP2017518102A (ja) | 2017-07-06 |
US20190321606A1 (en) | 2019-10-24 |
US10596356B2 (en) | 2020-03-24 |
EP3157464A1 (en) | 2017-04-26 |
EP3718507B1 (en) | 2024-09-04 |
EP3157464A4 (en) | 2017-11-15 |
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