JP2009518116A - 心臓刺激システム - Google Patents
心臓刺激システム Download PDFInfo
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Abstract
Description
本件出願は、「カーディアック・スティミュレーション・システム(CARDIAC STIMULATION SYSTEM)」と題されて2005年12月9日に出願された米国特許仮出願第60/748,964号に対する優先権を主張するものであり、当該出願の内容は、参照によってこれに援用される。
スレッショルド・ペーシング電圧=2.5ボルト
リード・インピーダンスの代表値=600オーム
パルス持続時間の代表値=0.4ミリ秒
誘導されるスレッショルド・エネルギ=4マイクロジュール
(たとえば、搬送カテーテル115の近位端までは、より狭いチャンネルが完全に延びており、プランジャ・メカニズム140のための空間を提供する)。
Claims (22)
- 心臓組織の電気的刺激のための無線電極アッセンブリであって、
電気エネルギを電極に送って心臓壁組織を電気的に刺激する回路を少なくとも部分的に含む本体部分と、
前記本体部分から前方に向いて延び、保持された状態から心臓壁組織と係合する外側に広げられた状態にシフトするようにバイアスされている第1の固定構造と、
前記本体部分から後方に向いて延び、保持された状態から心臓壁組織と係合する外側に広げられた状態にシフトする第2の固定構造、
を含む無線電極アッセンブリ。 - 前記第1の固定構造は、外側に広げられた状態にあるとき、前記心臓壁組織を通る前記本体部分の前方移動に抗する少なくとも1つの尖叉を含む請求項1に記載の無線電極アッセンブリ。
- 前記第2の固定構造は、外側に広げられた状態にあるとき、前記心臓壁組織を通る前記本体部分の後方移動に抗する少なくとも1つの尖叉を含む請求項2に記載の無線電極アッセンブリ。
- 前記本体部分の少なくとも電極は、前記心臓壁組織の心内膜と心筋を通って挿入可能である請求項1に記載の無線電極アッセンブリ。
- 前記本体部分は約1.25mm又はそれ未満の半径を有し、かつ前記本体部分は約10mm又はそれ未満の長さを有する請求項4に記載の無線電極アッセンブリ。
- 前記第1と第2の固定構造は、ニチノール、ステンレス鋼、ニッケル−コバルト合金からなるグループから選択された材料を含む請求項1に記載の無線電極アッセンブリ。
- 前記回路は、外部電源コイルと誘導結合する内部コイルを含み、かつ前記内部コイルによって誘導的に生成された電流から再充電される電荷蓄積デバイスを含む請求項1に記載の無線電極アッセンブリ。
- 心腔壁の内側表面を通って少なくとも部分的に埋込可能な無線電極アッセンブリであって、
心臓組織を電気的に刺激するための電極を有する本体部分と、
前記本体部分の後方の半径方向周縁から前方に延びており、外方にバイアスされた第1のセットの尖叉であって、前記電極アッセンブリが前方方向に前記心腔壁の内側表面に向かって長さ方向に前進させられるとき、前記本体部分の前方部分ではなく後方部分の前記心臓壁内への前進に抗する第1のセットの尖叉と、
前記本体部分の前方の半径方向周縁から後方に延びており、外方にバイアスされた第2のセットの尖叉であって、前記心腔壁内への前記前方本体部分の長さ方向へ前進後は、前記本体部分の前記前方部分の心臓壁組織からの押し出しに抗する第2のセットの尖叉と、
を含む無線電極アッセンブリ。 - 前記本体部分の少なくとも前記前方部分は、心内膜を通り、前記心臓壁組織の心筋内に挿入可能である請求項8に記載の無線電極アッセンブリ。
- 前記本体部分は約1.25mm又はそれ未満の半径を有し、かつ前記本体部分は約10mm又はそれ未満の長さを有する請求項9に記載の無線電極アッセンブリ。
- 前記第1のセットの尖叉と前記第2のセットの尖叉は、ニチノール、ステンレス鋼、ニッケル−コバルト合金からなるグループから選択された材料を含む請求項8に記載の無線電極アッセンブリ。
- 前記本体部分は、外部電源コイルと誘導結合する内部コイル、及び前記内部コイルによって誘導的に生成された電流から再充電される電荷蓄積デバイスを含む回路を含む請求項8に記載の無線電極アッセンブリ。
- 本体部分を含むとともに、装填状態から前記本体部分を心腔壁に固定する外側に広げられた状態にシフトするようにバイアスされた第1と第2の尖叉であって、互いに対向する第1と第2のバイアスされた尖叉をも含む無線電極アッセンブリと、
心腔を通り、心腔壁の内側表面に向かって前記無線電極アッセンブリを送り込む搬送カテーテルであって、遠位端に開口を有し、その結果、前記無線電極アッセンブリが前記カテーテルの前記遠位端の前記開口から分離されるとき、前記第1と第2の尖叉が前記装填状態から外側に広げられた状態にシフトする搬送カテーテルと、
を含む電極搬送システム。 - 前記第1と第2の尖叉が外側に広げられた状態にシフトするとき、前記第1の尖叉は遠位の向きで外側に広げられ、前記第2のバイアスされた尖叉は近位の向きで外側に広げられる請求項13に記載の電極搬送システム。
- さらに、前記搬送カテーテルの遠位端を前記心腔内に送り込む案内カテーテルを含む請求項13に記載の電極搬送システム。
- さらに、前記無線電極アッセンブリを前記搬送カテーテルの前記遠位端内の前記開口から分離するプッシュ・ロッド・デバイスを含む作動部材を含む請求項15に記載の電極搬送システム。
- 前記無線電極アッセンブリは、管状の壁によって前記搬送カテーテル内に解放可能に保持されており、前記管状壁は、前記第1と第2の尖叉のうちの少なくとも1つに整列する1つ又は複数の展開スロットを含む請求項13に記載の電極搬送システム。
- 無線電極アッセンブリを心腔壁内に挿入する方法であって、
無線電極アッセンブリの遠位尖叉のセットを心内膜の部分を通して心腔壁内に挿入するステップであって、前記遠位尖叉のセットは、保持された状態から前記無線電極アッセンブリを心腔壁に固定する外側に広げられた状態にシフトするようにバイアスされている、ステップと、
前記無線電極アッセンブリの近位尖叉のセットを、保持された状態から前記無線電極アッセンブリを前記心腔壁に固定する外側に広げられた状態にシフトさせるステップと、
遠位尖叉の前記セットが、前記外側に広げられた状態にあるとき、後方の向きに延び、及び近位尖叉の前記セットが、前記外側に広げられた状態にあるとき、前方の向きに延びるステップと、
を含む方法。 - 前記無線電極アッセンブリの部分が、時間期間にわたって前記心腔壁の心内膜内に少なくとも部分的に取り込まれるように前記心腔に固定される請求項18に記載の方法。
- さらに、搬送カテーテル内の無線電極アッセンブリを目標心腔に送り込むステップを含む請求項18に記載の方法。
- 前記無線電極アッセンブリが前記搬送カテーテルの遠位開口から分離されるとき、遠位尖叉の前記セット及び近位尖叉の前記セットが、それぞれの外側に広げられた状態にシフトされる請求項20に記載の方法。
- さらに、心臓の近位に無線電源コイルを、前記無線電源コイルが前記無線電極アッセンブリの内部コイルと誘導結合するために配置されるように埋込するステップを含む請求項18に記載の方法。
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US3943936A (en) * | 1970-09-21 | 1976-03-16 | Rasor Associates, Inc. | Self powered pacers and stimulators |
JPH05245215A (ja) * | 1992-03-03 | 1993-09-24 | Terumo Corp | 心臓ペースメーカ |
JPH0716299A (ja) * | 1992-10-22 | 1995-01-20 | Medtronic Inc | 心筋ペーシングリード |
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JP2009518115A (ja) | 2009-05-07 |
EP1957147A1 (en) | 2008-08-20 |
ATE499142T1 (de) | 2011-03-15 |
ATE493167T1 (de) | 2011-01-15 |
EP1957147B1 (en) | 2010-12-29 |
EP1957148A1 (en) | 2008-08-20 |
DE602006019309D1 (de) | 2011-02-10 |
US20180289948A1 (en) | 2018-10-11 |
EP1957148B1 (en) | 2011-02-23 |
DE602006020328D1 (de) | 2011-04-07 |
WO2007067231A1 (en) | 2007-06-14 |
US20070135882A1 (en) | 2007-06-14 |
US20070135883A1 (en) | 2007-06-14 |
US10022538B2 (en) | 2018-07-17 |
JP5073672B2 (ja) | 2012-11-14 |
US20140039591A1 (en) | 2014-02-06 |
US20230389876A1 (en) | 2023-12-07 |
US11766219B2 (en) | 2023-09-26 |
US20220008010A1 (en) | 2022-01-13 |
US11154247B2 (en) | 2021-10-26 |
WO2007067253A1 (en) | 2007-06-14 |
US7848823B2 (en) | 2010-12-07 |
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