JP2016531722A - 僧帽弁逆流症処置用のデバイスおよび方法 - Google Patents
僧帽弁逆流症処置用のデバイスおよび方法 Download PDFInfo
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Abstract
Description
本出願は、2014年7月14日に出願された米国特許仮出願第62/024,097号、2014年1月15日に出願された米国特許仮出願第61/927,490号、および2013年10月5日に出願された米国特許仮出願第61/887,343号の関連出願である。本出願は、2014年5月16日に出願された米国特許出願第14/279,511号の一部継続出願であり、その全開示内容は参照によって本明細書に完全に記載されているものとして、本明細書に組み込まれる。
技術分野
本発明は、一般に人の僧帽弁機能の修復および/または再建に有用な医療機器および方法に関する。特に、本発明は、生来の心臓弁の機能を置換することによって僧帽弁逆流症を処置するのに使用することができる医療機器に関する。
(1)生来の弁尖ならびに他の内部弁構造および弁下構造が保存されている。
(2)デバイス20は、心臓の生来構造の機能、たとえば腱索、乳頭筋、左心室、LVOT、大動脈弁への衝突等への干渉/閉塞を最小限にして、心臓逆流症を処置する。
(3)デバイス20の構造は、心臓弁の生来の表面形状および解剖学的構造を考慮して、生来の心臓弁、弁輪の外形、周囲の構造および弁下構造への最小限の修正となるようにしている。
(4)デバイス20は、心臓の解剖学的形態の生来の輪郭に自己順応する構造を有し、また弁輪における密閉部分は正常な生来の弁輪のように収縮し拡大することができる。
(5)デバイス20の外形は、完全な円形のほかに、たとえば「D」字形、「裏返しC」字形または長円形のような形状に設定されて、生来の弁輪の外形に対応することができ、また弁輪の近くに接触するデバイス20の部分は、「V」字形の外形を有して、生来の僧帽弁の解剖学的輪郭を模倣することができる。
(6)デバイス20の固定化要素は、生来の弁尖および他の内部弁構造または弁下構造を利用する。
(8)デバイス20は、変化可能な外形を有して、心室収縮期に密閉効果を生み出すのを支援することができ、また生来の弁尖との相互作用による締め付け効果を提供して、心室収縮期のデバイスの位置を維持するのを支援することができる。たとえば、デバイス20は,心房突縁22と弁本体28との間の「移行帯」を有することができる。「移行帯」は、デバイス20の他の部分とは異なる外形を有することができる。1つの例は、「移行帯」が完全な円形の外形の代わりに長円形の外形を有することができることである。「移行帯」には長軸および短軸があり、長軸は「接合部から接合部へ」沿った方向に決められることができ、他方、もう一方の軸は長軸よりも短い。「移行帯」における長円形の外形は移行エリアにおける改善された密閉効果を生み出すのを支援することができる。移行帯はまた、ネック26を含んで「密閉する」表面積を増加させることができる。これはまた、デバイス20に動的な固定化効果を付与し、これは、デバイス20に作用する揚力が最も高くなる心室収縮期に効果を現す。
(9)デバイス20は、生来の弁尖および腱索を利用する構造を有することによって、密閉効果および固定化効果の両方を提供する。
(11)弁本体28の尾部36は医師に、展開中における理想的な弁性能のための弁の位置/角度を調節するための十分な時間的余裕を与える、および
(12)送達システム内の内側軸は、それが弁の展開中に移動可能であるような様式で設計されつくられることができる。たとえば、送達中に、デバイス20のほとんどが送達システムから解放され/展開されると、デバイス20の弁尖48は心拍として機能し始めることになる。この時に、送達システムの内側軸は、デバイス20の内腔の内側に依然としてあることができ、デバイス20の弁尖のうちの1つの動きに影響を与えることができる。この状況では、内側軸がデバイスの内腔の内側ではなくなるように、送達システムの内側軸は、送達システムの近位ハンドル端から解き放され、近位方向に引き戻されてもよい。したがって、デバイス20の弁尖48はすべて自由に移動することができる。これは、尾部36が送達システムにまだ繋がれているときに、デバイス20がよりよい弁機能を発揮することができることを意味する。言いかえれば、デバイス20の弁尖48が展開中に機能しているという事実は、医師に、弁の位置/角度を最適な性能に調節するためのより多くの時間を与えることになる。
Claims (11)
- 人の心臓内の僧帽弁の位置で展開されるように適合化された僧帽弁置換デバイスであって、
前記デバイスの心房端を画定する心房突縁、
前記デバイスの心室端を画定する心室部分であって、2mm〜15mmの範囲の高さを有する心室部分、
前記心房突縁と前記心室部分との間に配置される弁輪支持体であって、前記弁輪支持体が前記弁輪支持体から半径方向に延在するアンカーの輪を含み、環状のクリップ留めするスペースが前記心房突縁と前記アンカーの輪との間に画定される、弁輪支持体、
前記心房突縁の前記心房端に配置された複数の弁尖保持具、および
前記弁尖保持具に固定され、生来の弁輪の上の位置で前記心房突縁の内側に配置された複数の弁尖
を含む、僧帽弁置換デバイス。 - 前記弁本体の心室端から延在する少なくとも1個の尾部をさらに含む、請求項1に記載のデバイス。
- 前記心房突縁と前記弁輪支持体との間に配置されたネックをさらに含む、請求項1に記載のデバイス。
- 前記心房突縁、前記弁輪支持体および弁本体のうちの1個以上の少なくとも一部が、組織で覆われている、請求項1に記載のデバイス。
- 前記心房突縁、前記弁輪支持体および弁本体のうちの1個以上の少なくとも一部が、織物で覆われている、請求項1に記載のデバイス。
- 前記心房突縁、前記弁輪支持体および弁本体のうちの1個以上の少なくとも一部が、組織および織物で覆われている、請求項1に記載のデバイス。
- 前記組織および織物が、組織と織物とが組み合わされた層から構成される、請求項6に記載のデバイス。
- 前記心房突縁、前記弁輪支持体および弁本体のうちの1個以上の少なくとも一部が、生体適合性の接着剤でコーティングされている、請求項1に記載のデバイス。
- 人の心臓内の生来の僧帽弁の位置で僧帽弁置換デバイスを展開させる方法であって、
以下のものを含む僧帽弁置換デバイスを準備する工程であって、前記の以下のものが、
人の心臓内の僧帽弁の位置で展開されるように適合化された僧帽弁置換デバイスであって、
前記デバイスの心房端を画定する心房突縁、
前記デバイスの心室端を画定する心室部分であって、2mm〜15mmの範囲の高さを有する心室部分、
前記心房突縁と前記心室部分との間に配置される弁輪支持体であって、前記弁輪支持体が前記弁輪支持体から半径方向に延在するアンカーの輪を含み、環状のクリップ留めするスペースが前記心房突縁と前記アンカーの輪との間に画定される、弁輪支持体、
前記心房突縁の前記心房端に配置された複数の弁尖保持具、および
前記弁尖保持具に固定され、前記心房突縁の内側に配置された複数の弁尖
である工程、
前記心房突縁を、人の心臓内の生来の僧帽弁弁輪の上の心房内に、前記複数の弁尖が前記生来の僧帽弁弁輪の上に配置されるように据える工程、および
前記生来の僧帽弁弁輪および/または前記生来の僧帽弁弁尖を前記クリップ留めするスペースに配置する工程
を含む、方法。 - 前記僧帽弁置換デバイスが、前記弁本体の前記心室端から延在する少なくとも1個の尾部を含み、
前記少なくとも1個の尾部にワイヤまたはラインを取り付ける工程、および
前記ワイヤまたはラインを操作して、前記僧帽弁置換デバイスの位置を前記生来の僧帽弁の位置に調整する工程
をさらに含む、請求項9に記載の方法。 - 前記弁輪支持体から延在する少なくとも1個のクリップを準備する工程、および
前記生来の僧帽弁弁尖を前記少なくとも1個のクリップでクリップ留めする工程
をさらに含む、請求項9に記載の方法。
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361887343P | 2013-10-05 | 2013-10-05 | |
US61/887,343 | 2013-10-05 | ||
US201461927490P | 2014-01-15 | 2014-01-15 | |
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PCT/US2014/059076 WO2015057407A1 (en) | 2013-10-05 | 2014-10-03 | Device and method for mitral valve regurgitation method |
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Also Published As
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CN105658179A (zh) | 2016-06-08 |
AU2014334772A1 (en) | 2016-03-24 |
AU2014334772B2 (en) | 2018-12-13 |
IL244279B (en) | 2020-07-30 |
JP2019193874A (ja) | 2019-11-07 |
BR112016007555A2 (pt) | 2017-08-01 |
JP6869294B2 (ja) | 2021-05-12 |
CA2922123C (en) | 2021-11-02 |
IL244279A0 (en) | 2016-04-21 |
KR20160068875A (ko) | 2016-06-15 |
BR112016007555B1 (pt) | 2021-05-18 |
SG11201601674WA (en) | 2016-04-28 |
CA2922123A1 (en) | 2015-04-23 |
KR102256192B1 (ko) | 2021-05-26 |
JP6814042B2 (ja) | 2021-01-13 |
CN105658179B (zh) | 2018-06-12 |
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