JP6507226B2 - アブレーションカテーテル及びアブレーション機器 - Google Patents
アブレーションカテーテル及びアブレーション機器 Download PDFInfo
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Description
− 伸縮式管状本体であって、互いに同心の外部管状本体及び内部管状本体と、伸縮式本体の遠位端に対応して内部管状本体から突出する少なくとも1つの自由端を有して内部管状本体内に少なくとも部分的に収容される棒状ガイド要素とを含む、伸縮式管状本体と、
− 伸縮式本体の遠位端に対応する位置決めヘッド及びアブレーションヘッドであって、位置決めヘッドは棒状ガイドの自由端の近くに位置し、アブレーションヘッドは自由端に対して遠い場所において位置決めヘッドの近くに位置する、位置決めヘッド及びアブレーションヘッドと、
− 伸縮式本体の近位端における制御ハンドピースであって、ガイド要素、アブレーションヘッド、位置決めヘッド、及び伸縮式管状本体と結合された、制御ハンドピースと
を含み、
アブレーションヘッドは、外部管状本体内に収容された静止位置及び外部管状本体からペタルのように突出した動作位置から移動されることが可能な少なくとも2つのアブレーション要素又はペタルを含み、
特徴的に、本発明によれば、アブレーション要素又はペタルのそれぞれは、
− 棒状ガイド要素の長手方向軸を中心として有する円周の円弧に実質的に沿って、各ペタルの円周縁部分にわたって中断なしに延在する、連続したアブレーション電極と、
− 湾曲セクションに対応してアブレーション電極の端にそれぞれが接続される、ペタルの2つのサイド部分と
を含み、
サイド部分とアブレーション電極とは互いに一体であり、同じ折り曲げられた金属導体を用いて形成され、
各ペタルは、アブレーションヘッドの別のペタルから分離した別個のものであり、
アブレーションヘッドの全てのペタルは別個の電気エネルギージェネレータに別々に接続されて、アブレーション電極が電力供給された状態において高周波アブレーションをもたらす。
アーム2a’’’は、拡大された状態において、丸みのあるエッジを有する(側面図における)一種の矩形をそれぞれが形成し、アーム2a°は、拡大された状態において、(側面図における)一種の半円形をそれぞれが形成し、アーム2a*は、拡大された状態において、(側面図における)一種の二等辺三角形をそれぞれが形成し、アーム2a^は、拡大された状態において、丸みのあるエッジを有する(側面図における)一種の半矢印をそれぞれが形成する。
Claims (14)
- 組織のアブレーションのためのカテーテル(1)であって、
− 伸縮式管状本体(4)であって、互いに同心の外部管状本体(4a)及び内部管状本体(4b)と、前記伸縮式管状本体(4)の遠位端に対応して前記内部管状本体(4b)から突出する少なくとも1つの自由端(5a)を有して前記内部管状本体(4b)内に少なくとも部分的に収容される棒状ガイド要素(5)とを備える、伸縮式管状本体(4)と、
− 前記伸縮式管状本体(4)の前記遠位端に対応する位置決めヘッド(2、2’’、2’’’、2°、2*、2^)及びアブレーションヘッド(3)であって、前記位置決めヘッド(2、2’’、2’’’、2°、2*、2^)は前記棒状ガイド要素の前記自由端(5a)の近くに位置し、前記アブレーションヘッド(3)は前記自由端(5a)に対して遠い場所において前記位置決めヘッド(2、2’’、2’’’、2°、2*、2^)の近くに位置する、位置決めヘッド(2、2’’、2’’’、2°、2*、2^)及びアブレーションヘッド(3)と、
− 前記伸縮式管状本体(4)の近位端における制御ハンドピースであって、前記棒状ガイド要素(5)、前記アブレーションヘッド(3)、前記位置決めヘッド(2、2’’、2’’’、2°、2*、2^)、及び前記伸縮式管状本体(4)と結合された、制御ハンドピースと、を備え、
前記アブレーションヘッド(3)は、前記外部管状本体(4a)内に収容された静止位置及び前記外部管状本体(4a)からペタルのように突出した動作位置から移動されることが可能な少なくとも2つのアブレーション要素又はペタル(3a)を備える、カテーテル(1)であって、
前記アブレーション要素又はペタル(3a)のそれぞれは、
− 前記棒状ガイド要素(5)の長手方向軸を中心として有する円周の円弧に実質的に沿って、各ペタル(3a)の円周の縁部分にわたって中断なしに延在する、連続したアブレーション電極(3b)と、
− 湾曲セクションに対応して前記アブレーション電極(3b)の端にそれぞれが接続される、前記ペタル(3a)の2つのサイド部分(3c)と、を備え、
前記サイド部分(3c)と前記アブレーション電極(3b)とは互いに一体であり、同じ折り曲げられた金属導体を用いて形成され、
前記各ペタル(3a)は、前記アブレーションヘッドの別のペタル(3a)から分離した別個のものであり、
前記アブレーションヘッドの全ての前記ペタル(3a)は別個の電気エネルギージェネレータに別々に接続されて、アブレーション電極(3b)が電力供給された状態において高周波アブレーションをもたらすことを特徴とする、カテーテル(1)。 - 各ペタル(3a)は、直径Dの円形断面を有する単一のニチノールワイヤを用いて製造され、前記アブレーション電極の直線的長さがLである場合、
D/Lは0.015〜0.025の範囲であり、好ましくは約0.02に等しい、という比率である、請求項1に記載のカテーテル(1)。 - 各ペタル(3a)の前記2つのサイド部分(3c)は、電気絶縁材料、好ましくは絶縁塗料を用いてコーティングされる、請求項1又は請求項2に記載のカテーテル(1)。
- 各ペタル(3a)について、各ペタルに個別に電力を供給するために前記制御ハンドピースまで延在する少なくとも1つの導体(39)を備え、前記導体(39)は前記外部管状本体(4a)の内側で前記外部管状本体(4a)と前記内部管状本体(4b)との間の空間内を、好ましくは螺旋状に配置されて延在する、請求項1〜請求項3のいずれか一項に記載のカテーテル(1)。
- 各ペタルについて、前記伸縮式管状本体(4)内に少なくとも部分的に収容された少なくとも1つの第1の追加の導体(38)であって、好ましくは前記制御ハンドピースから前記外部管状本体(4b)の前記端まで延在するようになっている、少なくとも1つの第1の追加の導体(38)を備える、請求項1〜請求項4のいずれか一項に記載のカテーテル(1)。
- 各第1の追加の導体(38)は前記外部管状本体(4a)の内側で螺旋状に進展し、前記導体(39)は前記外部管状本体(4a)の内側で少なくとも1つの追加の導体(38)と交互になる、請求項5に記載のカテーテル(1)。
- 各ペタル(3a)は他に対して個別に、静止状態と、取り出された動作状態との間を移動されることが可能である、請求項1〜請求項6のいずれか一項に記載のカテーテル(1)。
- 前記ペタル(3a)は、前記伸縮式管状本体(4)及び/又は前記位置決めヘッド(2、2’’、2’’’、2°、2*、2^)が同様に回転することをもたらさずに回転され得るように、前記伸縮式管状本体(4)と回転的に関連付けられる、請求項1〜請求項7のいずれか一項に記載のカテーテル(1)。
- 前記位置決めヘッド(2、2’’、2’’’、2°、2*、2^)は、少なくとも1つの取り出し可能な位置決めアーム(2a、2a’’、2a’’’、2a°、2a*、2a^)を備え、前記取り出し可能な位置決めアーム(2a、2a’’、2a’’’、2a°、2a*、2a^)は、前記内部管状本体(4b)内に収容された静止位置と、前記内部管状本体(4b)から放射状に突出した、取り出された動作位置との間で移動可能である、請求項1〜請求項8のいずれか一項に記載のカテーテル(1)。
- 前記位置決めヘッド(2、2’’、2’’’、2°、2*、2^)は、前記組織内の電位を明らかにすることが可能な少なくとも1つのセンサであって、もたらされる前記アブレーションの完全性が明らかにされることを可能にすることができる少なくとも1つのセンサを備える、請求項1〜請求項9のいずれか一項に記載のカテーテル(1)。
- 前記位置決めアーム(2a、2a’’、2a’’’、2a°、2a*、2a^)は金属製であり、検出電極を形成する、請求項10に記載のカテーテル(1)。
- 各アームは少なくとも1つの細長い部分(29)に接続され、前記細長い部分(29)は、前記制御ハンドピースまで延在し、前記内部管状本体(4b)内に収容され、好ましくは螺旋形である、請求項11に記載のカテーテル(1)。
- 第2の追加の導体(28)が前記位置決めヘッド(2)について設けられ、前記第2の追加の導体(28)は、好ましくは螺旋状に進展し、前記細長い部分(29)と交えられる、請求項12に記載のカテーテル(1)。
- 請求項1〜請求項13のいずれか一項に記載のカテーテルと、前記カテーテルの各ペタルのための、前記ペタルに電気的に接続された少なくとも1つの電気エネルギージェネレータとを備える、組織のアブレーションのための機器。
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ITMI20140467 | 2014-03-20 | ||
PCT/IB2015/051998 WO2015140741A1 (en) | 2014-03-20 | 2015-03-18 | Ablation catheter and ablation apparatus |
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CA2976749C (en) | 2023-08-01 |
JP2017509458A (ja) | 2017-04-06 |
ZA201607094B (en) | 2017-08-30 |
CN106102628B (zh) | 2020-10-27 |
CA2976749A1 (en) | 2015-09-24 |
KR20160145034A (ko) | 2016-12-19 |
CN106102628A (zh) | 2016-11-09 |
BR112016021515B1 (pt) | 2022-07-26 |
IL247777B (en) | 2021-08-31 |
BR112016021515A2 (ja) | 2017-08-15 |
IL247777A0 (en) | 2016-11-30 |
US20170151014A1 (en) | 2017-06-01 |
SG11201706466SA (en) | 2017-09-28 |
AU2015232999A1 (en) | 2016-11-03 |
KR102357921B1 (ko) | 2022-02-03 |
PL3125802T3 (pl) | 2020-05-18 |
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