JP2012532737A - 乱流を有する開放注水式焼灼カテーテル - Google Patents
乱流を有する開放注水式焼灼カテーテル Download PDFInfo
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
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- A—HUMAN NECESSITIES
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
【選択図】図2
Description
209 カテーテル本体
210 RFワイヤ
211 冷却管腔
212 熱電対
Claims (16)
- 開放注水式焼灼カテーテルシステムであって、
流体管腔を有するカテーテル本体と、
閉鎖遠位端と前記カテーテル本体への接続のための開放近位端とを備えたほぼ中空の電極先端本体であって、流体が該電極先端本体から出ることを可能にする複数の注水ポートを有する前記中空の電極先端本体と、
前記電極先端本体に位置決めされて該電極先端本体において近位流体チャンバと遠位流体チャンバとを形成する遠位インサートであって、該遠位インサートが、該近位流体チャンバと該遠位流体チャンバの間に流体導管を有し、前記複数の注水ポートが、流体が該遠位流体チャンバから出ることを可能にする前記遠位インサートと、
を含み、
前記電極先端本体及び前記遠位インサートは、加圧流体が、前記カテーテル本体の前記流体管腔から前記近位流体チャンバに流入し、該近位流体チャンバから前記流体導管に流入し、該流体導管から前記遠位流体チャンバに流入し、かつ該遠位流体チャンバから前記複数の注水ポートを通って流れることを可能にするように構成される、
ことを特徴とするシステム。 - 前記注水ポートは、粗い縁部を有することを特徴とする請求項1に記載のシステム。
- 前記電極先端本体は、円周を有し、前記注水ポートは、該電極先端本体の該円周の周囲にほぼ等間隔に離間していることを特徴とする請求項1に記載のシステム。
- 前記注水ポートは、前記遠位インサートに近接し、流体が前記遠位流体チャンバの近位端に向けて該遠位インサートの近くで該遠位流体チャンバを出ることを可能にすることを特徴とする請求項1に記載のシステム。
- 前記電極先端本体は、近位部分及び遠位部分を有し、
前記遠位部分は、前記遠位流体チャンバと、前記近位流体チャンバと、前記遠位インサートとを含み、
前記近位部分は、前記遠位部分に対して縮小された直径までスエージ加工される、
ことを特徴とする請求項4に記載のシステム。 - 前記流体管腔、前記近位流体チャンバ、前記流体導管、及び前記遠位流体チャンバの各々が、直径を有し、
前記近位流体チャンバの前記直径は、前記流体管腔の前記直径よりも大きく、
前記流体導管の前記直径は、前記近位流体チャンバの前記直径よりも小さく、
前記遠位流体チャンバの前記直径は、前記流体導管の前記直径よりも大きい、
ことを特徴とする請求項1に記載のシステム。 - 前記カテーテル本体の前記流体管腔を通じて前記電極先端本体まで加圧冷却流体を送出するように構成された流体リザーバを更に含むことを特徴とする請求項1に記載のシステム。
- 前記電極先端本体からRF焼灼エネルギを送出するために該電極先端本体に電気的に接続された無線周波数(RF)発生器を更に含むことを特徴とする請求項1に記載のシステム。
- 開放注水式焼灼電極先端を形成する方法であって、
その遠位端が閉鎖端であり、かつその近位端が開放端であるほぼ円筒形の電極先端本体を形成する段階と、
前記電極先端本体の前記遠位端に近接して該電極先端本体の円周の周りに流体が該電極先端本体内から流出することを可能にする注水ポートを形成する段階と、
遠位インサートを前記ほぼ円筒形の先端本体に置く段階であって、遠位流体チャンバリザーバが、該遠位インサートと前記電極先端本体とによって形成され、前記遠位流体チャンバが、該電極先端本体の前記遠位端と該遠位インサートとの間にある前記置く段階と、
前記電極先端本体をカテーテル本体に接続する段階であって、近位流体チャンバが、前記遠位インサートと該電極先端本体とによって形成され、該遠位インサートが、前記近位流体チャンバから前記遠位流体チャンバまでの間を延びる流体導管を含む前記接続する段階と、
を含むことを特徴とする方法。 - 前記ほぼ円筒形の電極先端本体を形成する段階は、該電極先端本体を絞り加工する段階を含むことを特徴とする請求項9に記載の方法。
- 注水部分を形成する段階は、
注水ポートを穿孔し、かつ該注水ポートを粗い状態のままに残す段階、又は
スパークEDM(放電機械加工)工程を実施して前記注水ポートを形成し、かつ該注水ポートを粗い状態のままに残す段階、又は
前記電極先端本体の円周の周りにほぼ等間隔に前記注水ポートを離間させる段階、
を含む、
ことを特徴とする請求項9に記載の方法。 - 前記電極先端本体を前記カテーテル本体に接続する段階は、該電極先端本体の近位部分をスエージ加工する段階を含むことを特徴とする請求項9に記載の方法。
- 開放注水式焼灼電極を冷却する方法であって、
カテーテル本体の流体管腔から焼灼電極内へ加圧流体を送出する段階であって、該流体管腔内の流体流れが、ほぼ層流である前記送出する段階と、
前記流体管腔からの前記ほぼ層流の流体流れを前記焼灼電極内の乱流流体流れに変形させる段階と、
乱流流体流れを有する前記加圧流体を前記焼灼電極の注水ポートを通じて送出する段階と、
を含むことを特徴とする方法。 - 前記ほぼ層流の流体流れを前記乱流流体流れに変形させる段階は、
前記カテーテル本体の前記流体管腔からの前記加圧流体を直径が該流体管腔の直径よりも大きい近位流体チャンバ内に受け入れる段階と、
前記近位流体チャンバからの前記加圧流体を直径が該近位流体チャンバの直径よりも小さい流体導管内に受け入れる段階と、
前記流体導管からの前記加圧流体を直径が該流体導管の直径よりも大きい遠位流体チャンバ内に受け入れる段階と、
を含む、
ことを特徴とする請求項13に記載の方法。 - 注水ポートを通じてほぼ乱流の流体を送出する段階は、該注水ポートが形成された後に滑らかに機械加工されない注水ポートを通じて流体を送出する段階を含むことを特徴とする請求項13に記載の方法。
- 注水ポートを通じてほぼ乱流の流体を送出する段階は、前記電極から外にかつ該電極の近位端に向けて流体流れを誘導する段階を含むことを特徴とする請求項13に記載の方法。
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Application Number | Priority Date | Filing Date | Title |
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US22511809P | 2009-07-13 | 2009-07-13 | |
US61/225,118 | 2009-07-13 | ||
PCT/US2010/041677 WO2011008681A1 (en) | 2009-07-13 | 2010-07-12 | Open-irrigated ablation catheter with turbulent flow |
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JP2012532737A true JP2012532737A (ja) | 2012-12-20 |
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US (1) | US20110009857A1 (ja) |
EP (1) | EP2453821A1 (ja) |
JP (1) | JP2012532737A (ja) |
KR (1) | KR101379647B1 (ja) |
CA (1) | CA2768454A1 (ja) |
WO (1) | WO2011008681A1 (ja) |
Cited By (6)
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JPH0757993A (ja) * | 1993-08-13 | 1995-03-03 | Nikon Corp | 投影露光装置 |
JP2016512715A (ja) * | 2013-03-15 | 2016-05-09 | ボストン サイエンティフィック サイムド,インコーポレイテッドBoston Scientific Scimed,Inc. | 近位冷却機能付き開放注水式アブレーションカテーテル |
JP2016516481A (ja) * | 2013-03-15 | 2016-06-09 | ボストン サイエンティフィック サイムド,インコーポレイテッドBoston Scientific Scimed,Inc. | 開放灌注式アブレーションカテーテル |
JP2017515619A (ja) * | 2014-04-01 | 2017-06-15 | イノベーションズ イン メディスン,エルエルシー | 冷却材流を減少させた温度応答性の灌注式アブレーション電極と関連するその製造方法と使用方法 |
JP2018064939A (ja) * | 2016-10-17 | 2018-04-26 | バイオセンス・ウエブスター・(イスラエル)・リミテッドBiosense Webster (Israel), Ltd. | 傾いた灌注孔を備えたカテーテル |
US11026745B2 (en) | 2016-12-19 | 2021-06-08 | Boston Scientific Scimed Inc | Open-irrigated ablation catheter with proximal insert cooling |
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US9226791B2 (en) | 2012-03-12 | 2016-01-05 | Advanced Cardiac Therapeutics, Inc. | Systems for temperature-controlled ablation using radiometric feedback |
US8926605B2 (en) | 2012-02-07 | 2015-01-06 | Advanced Cardiac Therapeutics, Inc. | Systems and methods for radiometrically measuring temperature during tissue ablation |
US9277961B2 (en) | 2009-06-12 | 2016-03-08 | Advanced Cardiac Therapeutics, Inc. | Systems and methods of radiometrically determining a hot-spot temperature of tissue being treated |
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US9943363B2 (en) | 2010-04-28 | 2018-04-17 | Biosense Webster, Inc. | Irrigated ablation catheter with improved fluid flow |
US9510894B2 (en) | 2010-04-28 | 2016-12-06 | Biosense Webster (Israel) Ltd. | Irrigated ablation catheter having irrigation ports with reduced hydraulic resistance |
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US9314292B2 (en) | 2011-10-24 | 2016-04-19 | Ethicon Endo-Surgery, Llc | Trigger lockout mechanism |
US10028764B2 (en) | 2013-02-21 | 2018-07-24 | Boston Scientific Scimed, Inc. | Ablation catheter with wireless temperature sensor |
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Also Published As
Publication number | Publication date |
---|---|
US20110009857A1 (en) | 2011-01-13 |
KR20120044361A (ko) | 2012-05-07 |
EP2453821A1 (en) | 2012-05-23 |
WO2011008681A1 (en) | 2011-01-20 |
CA2768454A1 (en) | 2011-01-20 |
KR101379647B1 (ko) | 2014-03-28 |
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