JP4568116B2 - 心臓弁処置方法及び装置 - Google Patents
心臓弁処置方法及び装置 Download PDFInfo
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Description
(1)Gregory H. Lambrechtらによって2000年11月9日に出願された“CARDIAC VALVE PROCESURE METHODS AND DEVICES(心臓弁処置方法及び装置)”という名称の係属中の先行米国特許出願第09/700,167号
(2)Richard B. Streeterらによって2001年6月29日に出願された“INTRAVASCULAR FILTER WITH DEBRIS ENTRAPMENT MECHANISM(デブリ取り込み機構を備えた脈管内フィルタ)”という名称の係属中の先行米国特許出願第09/896,258号
(3)Richard B. Streeterによって2001年12月14日に出願された“APPARATUS AND METHOD FOR REPLACING AORTIC VALVE(大動脈弁を交換するための装置及び方法)”という名称の係属中の先行米国特許出願第10/022,951号
(4)John R. Liddicoatらによって2001年6月29日に出願された“METHOD AND APPARATUS FOR PERFORMING A PROCEDURE ON A CARDIAC VALVE(心臓弁の処置を行う方法及び装置)”という名称の係属中の先行米国特許出願第09/896,259号
(5)Richard B. Streeterらによって2001年10月26日に出願された“INTRACARDIOVASCULAR ACCESS (ICVATM) SYSTEM(心臓内血管アクセス(ICVATM)装置)”という名称の係属中の先行米国特許出願第10/014,699号
(6)William E. Cohnによって2002年11月13日に出願された“CARDIAC VALVE PROCEDURE METHODS AND DEVICES(心臓弁処置方法及び装置)”という名称の係属中の先行米国特許出願第60/425,877号
上記した6つの特許出願は、本明細書において参考として組み入れられている。
本発明の方法及び装置は、心停止又は心肺バイパスを備えていない心臓弁に対して手術を行うために使用することができる。本発明の外延を明確にするために、この方法及び装置の種々の実施形態を説明する。
栓状核の遊離を本質的に含むあらゆる脈管内処置の1つの重要な特徴は、発作及びその他の虚血性の現象を防止することである。装置が展開される血管の内腔を通過している血液を濾過しつつ脈管内を処置器具を通過させる多くの一時的なフィルタ装置を以下において説明する。
図1Aは、フィルタ装置10、外側カニューレ1,内側カニューレ2及び拡張可能なメッシュ3からなる3つの主要な構成部品を示している。外側カニューレ1は、内側カニューレ2の外径よりも大きい内径を有している。メッシュ3は、潰れたときにほぼ管状であり、拡張したときには少なくとも一部分が円錐形であり、内側カニューレ2の外側に配置されている。メッシュ3の円錐形部分の頂点は、内側カニューレ2の末端の基端側のある長さに亘って内側カニューレ2に対して可動に取り付けられている。潰されたメッシュ3は、内側カニューレ2に堅固に固定されるか又は該内側カニューレと一体化されている2つのOD段差4間において内側カニューレ2上に保持されている。これらのOD段差は内側カニューレ2の全体的な外径よりも大きいか又は内側カニューレ2の小さくなされた直径部分の端部を示していても良い。メッシュ3の頂点は、2つのOD段差間の内側カニューレ2の長さに沿って自由に摺動し且つ該内側カニューレを中心に自由に回転することができる。拡張可能なメッシュ3は、この長さに沿ってカニューレ2の外径より大きい内径を有するリング(図示せず)に固定しても良い。このことにより、カニューレは、血管の壁に対して動き且つ磨り減らす拡張可能な手段及びフィルタ材料なしで管状の血管内の長手軸線に沿って動き且つ該長手軸線を中心に回転することができる。この特徴は、処置に必要な操作中に血管壁から栓状核を取り除く危険性を最少にする役目を果たすことができる。
図1Cは、外側カニューレ1が基端方向に後退せしめられてメッシュ3を露出させ且つ該メッシュが展開される血管の内壁に対してその自由端が拡張するのを許容している状態の組み立てられたフィルタ装置10を示している。この実施形態においては、メッシュ3は円錐形状に広がり、該円錐形の基部はカニューレの末端に向かって伸長している。内側カニューレ2は、該装置の長手軸線から離れる方向にカニューレの内腔を曲げる偏向した先端を有している。この曲がりは、内側カニューレ2の内腔を通過せしめられた処置器具を血管の壁に向かってガイドし且つ心臓弁を該壁に取り付けるのを補助する。この図におけるメッシュ3の可動性は、メッシュ3が挿入される血管に対するメッシュ3の向きを変えることなくこの曲がりを許容する。図示されているように、内側カニューレ2の先端はメッシュ3を越えて伸びている。更に、幾つかの実施形態においては、この先端は、外科医の遠隔制御によって操縦可能である。この構造においては、カニューレ2から延びている弁切除装置のような装置は、例えば、狭窄した弁の所望の部分を切除するように操縦することができる。本発明はまた、カニューレ2内を通過している光ファイバ覗きアセンブリをも含んでいる。
心肺バイパス無しで心臓弁に処置を施すためには、処置中に弁の機能を支援することが重要である。この機能を果たす一時的な弁の多くの好ましい実施形態を以下に開示する。これらの弁の多くは、遊離された栓状核物質によって生じるかも知れない虚血症状の危険性を更に制限するためにフィルタと組み合わせられる。
これは幾つかの関連する構成部品を有している。
・ 端部にテーパーが付けられており且つ血管内処置カテーテル2’の作動ポートから延びているガイドカテーテル700;カテーテル700は、血管内処置カテーテルを位置決めする助けとなる。
・ 処置中における血液の損失を制限するカテーテルの内側の一方向弁25
・ 一時的な一方向弁26
・ 選択的透過性の濾過膜3’
・ 一時的な弁26及び/又は選択的透過性の濾過膜3’に取り付けられる血管内取り付けリング900
・ 取り付けリング900、一時的血管内一方向弁26及び選択的透過性のフィルタを展開させるステント装置950〜958(図6〜7D)
・ ガイドカテーテル700及び血管内処置カテーテル2’と相互作用することによる膜3’
・ 処置中に順方向の血液の流れを増すことができるカテーテルの末端壁に設けられた幾つかの孔600
上記の構成部品は、血管内処置中に単独で又は組み合わせて使用することができる。
本発明の別の特徴は、図17A乃至17Eに示されている弁固定装置である。弁固定装置90は、人工弁を血管の壁に固定するために使用される。好ましい実施形態においては、人工弁はステント無しの組織弁である。この組織弁は、解剖学的構造位置に配置されたときに心臓の基端側に配置される基部と、該基部の末端側に配置される頂部とを有している。人工弁は3つの合わせ目と3つのリーフレットとを有しているのが好ましい。合わせ目の頂部は弁の頂点を向いている。この弁は内側面と外側面とを有している。内側面は、弁の環帯に対する弁のリーフレットの取り付け部位の役目を果たす。弁の外側は、一般的に滑らかで且つ円筒形の少なくとも一部分を形成している。この弁は、円筒形の長手軸線に沿って延びている長手軸線を有している。
図17Eは、弁固定具90の別の実施形態を示している。実施形態86においては、棘状突起83は、支柱92及び拡張可能なリング91の両方の外面上に存在していて固定具90を血管の壁に固定する助けとしている。弁漏れしないようにシールする助けとするために、拡張可能リング91にフェルト84も付加されている。フェルト84は支柱92に付加することができる。他の形態のシーラントを同様に使用しても良い。
上記の各実施形態は、心臓が鼓動している間に心臓弁に処置を施すために単独で又は組み合わせて使用することができる。以上に示したものは、これらの好ましい装置の実施形態の可能な用途の広さを明確化するために記載されている多くのこのような本発明の処置方法である。
本発明の更に別の特徴に従って、(冠状動脈が大動脈から出て行く)冠状動脈口と大きな血管の起点(すなわち、腕及び脳内へと流れる血管)との間に一時的な一方向弁を提供する新規な弁付きの弓状フィルタ装置1000(図25)が提供される。
Claims (4)
- 心臓弁の修復及び交換のために使用するための弁付きのフィルタ装置であって、
末端が閉じられており且つ基端が開いているフィルタ材料からなる細長いチューブと、
前記チューブの基端に固定され且つ内面を有する弁着座保持リングと、
前記弁着座保持リング内に取り付けられた膜と、を備え、
前記膜は、前記リングの多数の互いに隔てられた固定箇所において互いに隔てられた第一の部分が前記弁着座保持リングの内面に係留された放物線状の円錐形状とされており、当該膜の前記互いに隔てられた第一の部分同士の間に位置する膜の部分が、心拡張期においては心拡張期圧力によって前記内面に抗して拡張して前記弁着座保持リングの内面に対して圧縮され且つ前記弁着座保持リングが大動脈の内面に対して圧縮されることにより、前記放物線状の円錐形状を呈して該フィルタ装置の中を流れる血液の流れが前記膜によって実質的に遮断され、心収縮期においては心収縮期圧力によって圧縮されて前記放物線状の円錐形状が前記互いに隔てられた第一の部分同士の間に位置する膜の部分において潰れることにより、該膜と前記リングとの間に隙間が形成されて該隙間内を介する該フィルタ装置の中を流れる血液の流れが許容される実質的に流動非遮断構造を呈することができるようになされた、弁付きのフィルタ装置。 - 請求項1に記載の弁付きのフィルタ装置であって、
前記チューブの中心部分内に延びているカテーテルを更に含み、前記膜の頂点部分が前記カテーテルに係留されている弁付きのフィルタ装置。 - 請求項2に記載の弁付きのフィルタ装置であって、
前記チューブを支持する骨格部材を更に含み、該骨格部材は、前記チューブの中心部分内に前記カテーテルを保持するように作動可能な径方向の支柱を含み且つ当該フィルタ装置が周方向に沿って圧縮可能とするために潰れることができるようになされている、弁付きのフィルタ装置。 - 請求項1に記載の弁付きのフィルタ装置であって、
前記膜の拡張及び圧縮が、各々、前記リングと当該リングに取り付けられている前記チューブの基端とを拡張させたり圧縮したりするようになされた弁付きフィルタ装置。
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| US42587702P | 2002-11-13 | 2002-11-13 | |
| PCT/US2003/036639 WO2004043293A2 (en) | 2002-11-13 | 2003-11-13 | Cardiac valve procedure methods and devices |
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| JP2006507862A JP2006507862A (ja) | 2006-03-09 |
| JP4568116B2 true JP4568116B2 (ja) | 2010-10-27 |
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| US12485008B2 (en) | 2021-04-09 | 2025-12-02 | Boston Scientific Scimed, Inc. | Rotational alignment of medical implant |
| EP4572684A1 (en) | 2022-08-16 | 2025-06-25 | Boston Scientific Scimed, Inc. | Medical device for occluding a left atrial appendage |
| US12171658B2 (en) | 2022-11-09 | 2024-12-24 | Jenavalve Technology, Inc. | Catheter system for sequential deployment of an expandable implant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048436A2 (en) * | 1996-06-17 | 1997-12-24 | Cardeon Corporation | Externally valved catheter for controlled antegrade and retrograde fluid flow |
| US5827237A (en) * | 1996-06-17 | 1998-10-27 | Cardeon Corporation | Dual lumen catheter with controlled antegrade and retrograde fluid flow |
| US6258120B1 (en) * | 1997-12-23 | 2001-07-10 | Embol-X, Inc. | Implantable cerebral protection device and methods of use |
| US6361545B1 (en) * | 1997-09-26 | 2002-03-26 | Cardeon Corporation | Perfusion filter catheter |
| WO1999015223A1 (en) * | 1997-09-26 | 1999-04-01 | Cardeon Corporation | Multi-function aortic catheterization and bumper instrument |
| US6267776B1 (en) * | 1999-05-03 | 2001-07-31 | O'connell Paul T. | Vena cava filter and method for treating pulmonary embolism |
| US6168579B1 (en) * | 1999-08-04 | 2001-01-02 | Scimed Life Systems, Inc. | Filter flush system and methods of use |
| US6929653B2 (en) * | 2000-12-15 | 2005-08-16 | Medtronic, Inc. | Apparatus and method for replacing aortic valve |
| US6695865B2 (en) * | 2000-03-20 | 2004-02-24 | Advanced Bio Prosthetic Surfaces, Ltd. | Embolic protection device |
-
2003
- 2003-11-13 JP JP2004552242A patent/JP4568116B2/ja not_active Expired - Fee Related
- 2003-11-13 WO PCT/US2003/036639 patent/WO2004043293A2/en not_active Ceased
- 2003-11-13 EP EP11002111.0A patent/EP2345380B1/en not_active Expired - Lifetime
- 2003-11-13 EP EP03789776A patent/EP1583581A4/en not_active Withdrawn
- 2003-11-13 AU AU2003294293A patent/AU2003294293A1/en not_active Abandoned
Also Published As
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|---|---|
| JP2006507862A (ja) | 2006-03-09 |
| EP1583581A4 (en) | 2008-09-10 |
| AU2003294293A8 (en) | 2004-06-03 |
| EP2345380A2 (en) | 2011-07-20 |
| AU2003294293A1 (en) | 2004-06-03 |
| WO2004043293A3 (en) | 2005-02-17 |
| EP1583581A2 (en) | 2005-10-12 |
| EP2345380A3 (en) | 2011-08-03 |
| WO2004043293A2 (en) | 2004-05-27 |
| EP2345380B1 (en) | 2018-01-10 |
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