JP5693471B2 - 絶縁された切除カテーテルデバイスおよびその使用法 - Google Patents
絶縁された切除カテーテルデバイスおよびその使用法 Download PDFInfo
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- 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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Description
本開示は、切除の分野に関し、より詳細には、絶縁された切除カテーテルデバイスおよびその使用法に関する。
心房細動は、異常な電気信号が不規則な心臓収縮を引き起こす心臓状態である。この状態に対する1つの治療は、開放心臓外科手術と、房の心内膜にいくつかの外傷を造ることとを含む。これらの傷害は、異常な電気インパルスをブロックするように機能を果たし得、インパルスが、洞房結節から起り、心臓収縮を正しく調節することを可能にし得る。しかしながら、開放心臓外科手術は、非常に侵襲性があり、長い患者の回復期間を必要とするために、外傷を作る代わりの方法が必要とされる。1つの代わりの処置は、切除カテーテルを用いる。
本明細書において説明されるものは、組織温度を決定する改善されたデバイスおよび方法を提供しながら、標的組織に切除エネルギーを送達する医療処置である。一局面において、切除電極と絶縁チャンバとを有する切除カテーテルが開示される。カテーテルは、切除先端部に冷却流体を提供する経路を含み得る。先端部内において、冷却流体は開ループ構成または閉ループ構成で循環し得る。
(項目1)
脈管のアクセスのために構成されるカテーテルデバイスであって、
近位端と遠位端との間に延びる細長い本体であって、該細長い本体は流体を受け入れるように構成される内腔を含む、細長い本体と、
切除エネルギーを提供するように構成される切除電極であって、該切除電極は、該細長い本体に沿って遠位に位置を定められ、該細長い本体の該内腔に流体が流れるように接続される通路を含む、切除電極と、
温度を表す信号を提供するように構成されるセンサと、
絶縁チャンバであって、該切除電極の周りに少なくとも部分的に延び、該切除電極から該センサを少なくとも部分的に絶縁するように構成される、絶縁チャンバと
を備えている、カテーテルデバイス。
(項目2)
前記絶縁チャンバは、実質的に前記切除電極の外側表面の周りに延びる、項目1に記載のデバイス。
(項目3)
前記絶縁チャンバは、流体および固体材料のうちの少なくとも1つを含む、項目1に記載のデバイス。
(項目4)
前記流体は、空気、窒素、水、および食塩水のうちの少なくとも1つを含む、項目3に記載のデバイス。
(項目5)
前記固体材料は、発泡体、ポリマー、およびセラミック材料のうちの少なくとも1つを含む、項目3に記載のデバイス。
(項目6)
前記センサは、前記絶縁チャンバ内に位置を定められる、項目1に記載のデバイス。
(項目7)
前記切除電極の遠位端の近位にかつ前記細長い本体に沿って位置を定められる少なくとも1つのリング電極をさらに含む、項目1に記載のデバイス。
(項目8)
前記少なくとも1つのリング電極のうちの少なくとも1つの近位に位置を定められる第2の絶縁チャンバをさらに含む、項目7に記載のデバイス。
(項目9)
前記絶縁チャンバの周りに少なくとも部分的に位置を定められるリング電極をさらに含む、項目1に記載のデバイス。
(項目10)
前記細長い本体に沿って遠位に位置を定められ、制御機構によって制御される関節接合部をさらに含む、項目1に記載のデバイス。
(項目11)
組織を切除する方法であって、
切除電極を提供するステップであって、該切除電極は、カテーテルデバイスの細長い本体の内腔に流体が流れるように接続される通路と、該切除電極の周りに少なくとも部分的に延びる絶縁チャンバと、該切除電極から少なくとも部分的に絶縁される温度センサとを含む、ステップと、
該内腔に流体を送達して、該切除電極を冷却するステップと、
該切除電極に切除エネルギーを送達するステップと
を包含する、方法。
(項目12)
前記切除電極の外部の区域の温度を決定することをさらに含む、項目11に記載の方法。
(項目13)
心臓組織に切除エネルギーを提供するように構成される切除電極デバイスであって、
カテーテルデバイスの細長い本体に取り付けるように構成される近位部と、
該細長い本体の内腔に接続するように構成される通路であって、該通路は流体を受け入れるように構成される、通路と、
該切除電極の外部の区域の温度を表す信号を提供するように構成されるセンサと、
該切除電極の周りに少なくとも部分的に延び、該センサを少なくとも部分的に絶縁するように構成される、絶縁チャンバと
を備えている、切除電極デバイス。
(項目14)
前記絶縁チャンバは、実質的に前記切除電極の周りに延びる、項目13に記載の電極デバイス。
(項目15)
前記絶縁チャンバは、流体および固体材料のうちの少なくとも1つを含み、該流体は、空気、窒素、水、および食塩水のうちの少なくとも1つを含み、該固体材料は、発泡体、ポリマー、およびセラミック材料のうちの少なくとも1つを含む、項目13に記載の電極デバイス。
(項目16)
前記センサは、前記絶縁チャンバ内に位置を定められる、項目13に記載の電極デバイス。
(項目17)
前記切除電極は、実質的に直線状であり、概ね円筒形である、項目13に記載の電極デバイス。
(項目18)
前記切除電極は、剛体である、項目13に記載の電極デバイス。
(項目19)
前記切除電極の遠位端の近位にかつ該切除電極に沿って位置を定められる少なくとも1つのリング電極をさらに含む、項目13に記載の電極デバイス。
(項目20)
前記少なくとも1つのリング電極のうちの少なくとも1つに近位に位置を定められる第2の絶縁チャンバをさらに含む、項目19に記載の電極デバイス。
(項目21)
前記通路に流体が流れるように接続される1つ以上の灌漑アパーチャをさらに含む、項目13に記載の電極デバイス。
(項目22)
切除電極を製造する方法であって、
カテーテルデバイスの細長い本体の内腔に接続するように構成される通路を提供するステップであって、該通路は流体を受け入れるように構成される、ステップと、
該切除電極の周りに少なくとも部分的に延びる絶縁チャンバを提供するステップと、
該絶縁チャンバにセンサを取り付けるステップであって、該センサは、該切除電極の外部の区域の温度を表す信号を提供するように構成される、ステップと
を包含する、方法。
(項目23)
絶縁チャンバを提供することは、前記切除電極を形成する前に該絶縁チャンバを密閉することを含む、項目22に記載の方法。
(項目24)
前記絶縁チャンバは、流体および固体材料のうちの少なくとも1つで満たされ、該流体は、空気、窒素、水、および食塩水のうちの少なくとも1つを含み、該固体材料は、発泡体、ポリマー、およびセラミック材料のうちの少なくとも1つを含む、項目22に記載の方法。
(項目25)
前記絶縁チャンバは、合金、ポリマーおよびセラミック材料のうちの少なくとも1つから形成される、項目22に記載の方法。
本明細書に組み込まれ、本明細書の一部を構成する添付の図面は、本開示の例示的実施形態を提供し、説明と共に開示の原理を説明するのに役立つ。
切除カテーテルおよびその使用法が本明細書において開示される。概して、カテーテルは、カテーテルの遠位部に冷却を提供する流路を含む。カテーテルは、電極を囲む環境および電極の表面に冷却流体を送達するための灌漑アパーチャを有する切除電極を含み得る。さらに、電極は、例えば電極または冷却流体などの他の熱源から少なくとも部分的に熱的に温度センサを絶縁するための絶縁チャンバを含み得る。絶縁チャンバは、電極を囲む組織または流体の温度を感知する精度を改善し得る。
Claims (23)
- 脈管のアクセスのために構成されるカテーテルデバイスであって、
近位端と遠位端との間に延びる細長い本体であって、該細長い本体は流体を受け入れるように構成される内腔を含む、細長い本体と、
切除エネルギーを提供するように構成される切除電極であって、該切除電極は、該細長い本体に沿って遠位に位置を定められ、該細長い本体の該内腔に流体が流れるように接続される通路を含む、切除電極と、
温度を表す信号を提供するように構成されるセンサと、
熱絶縁チャンバであって、該切除電極の外側表面を部分的に囲み、該切除電極から該センサを少なくとも部分的に熱絶縁するように構成される、熱絶縁チャンバと
を備えている、カテーテルデバイス。 - 前記熱絶縁チャンバは、流体および固体材料のうちの少なくとも1つを含む、請求項1に記載のデバイス。
- 前記流体は、空気、窒素、水、および食塩水のうちの少なくとも1つを含む、請求項2に記載のデバイス。
- 前記固体材料は、発泡体、ポリマー、およびセラミック材料のうちの少なくとも1つを含む、請求項2に記載のデバイス。
- 前記センサは、前記熱絶縁チャンバ内に位置を定められる、請求項1に記載のデバイス。
- 前記切除電極の遠位端の近位にかつ前記細長い本体に沿って位置を定められる少なくとも1つのリング電極をさらに含む、請求項1に記載のデバイス。
- 前記少なくとも1つのリング電極のうちの少なくとも1つの近位に位置を定められる第2の熱絶縁チャンバをさらに含む、請求項6に記載のデバイス。
- 前記熱絶縁チャンバの周りに少なくとも部分的に位置を定められるリング電極をさらに含む、請求項1に記載のデバイス。
- 前記細長い本体に沿って遠位に位置を定められ、制御機構によって制御される関節接合部をさらに含む、請求項1に記載のデバイス。
- 組織を切除するシステムであって、
該システムは、切除電極を備え、該切除電極は、カテーテルデバイスの細長い本体の内腔に流体が流れるように接続される通路と、該切除電極の外側表面を部分的に囲む熱絶縁チャンバと、該熱絶縁チャンバ内に位置を定められる温度センサであって、該温度センサは、該熱絶縁チャンバ内の熱絶縁物質により該切除電極から分離されることにより、該温度センサが該切除電極から少なくとも部分的に熱絶縁される、温度センサとを含み、
該内腔は、流体を受け入れて該切除電極を冷却するように構成され、
該切除電極は、切除エネルギーを受けるように構成される、システム。 - 前記切除電極の外部の区域の温度を決定するように構成されるセンサをさらに備える、請求項10に記載のシステム。
- 心臓組織に切除エネルギーを提供するように構成される切除電極デバイスであって、
切除電極と、
該切除電極をカテーテルデバイスの細長い本体に取り付けるように構成される近位部と、
該切除電極内の通路であって、該通路は、該細長い本体の内腔に接続するように構成され、該通路は流体を受け入れるように構成される、通路と、
該切除電極の外部の区域の温度を表す信号を提供するように構成されるセンサと、
該切除電極の外側表面を部分的に囲み、該センサを少なくとも部分的に熱絶縁するように構成される、熱絶縁チャンバと
を備えている、切除電極デバイス。 - 前記熱絶縁チャンバは、流体および固体材料のうちの少なくとも1つを含み、該流体は、空気、窒素、水、および食塩水のうちの少なくとも1つを含み、該固体材料は、発泡体、ポリマー、およびセラミック材料のうちの少なくとも1つを含む、請求項12に記載の電極デバイス。
- 前記センサは、前記熱絶縁チャンバ内に位置を定められる、請求項12に記載の電極デバイス。
- 前記切除電極は、実質的に直線状であり、概ね円筒形である、請求項12に記載の電極デバイス。
- 前記切除電極は、剛体である、請求項12に記載の電極デバイス。
- 前記切除電極の遠位端の近位にかつ該切除電極に沿って位置を定められる少なくとも1つのリング電極をさらに含む、請求項12に記載の電極デバイス。
- 前記少なくとも1つのリング電極のうちの少なくとも1つの近位に位置を定められる第2の熱絶縁チャンバをさらに含む、請求項17に記載の電極デバイス。
- 前記通路に流体が流れるように接続される1つ以上の灌漑アパーチャをさらに含む、請求項12に記載の電極デバイス。
- 切除電極デバイスを組み立てる方法であって、
切除電極内に通路を提供するステップであって、該通路は、カテーテルデバイスの細長い本体の内腔に接続するように構成され、該通路は流体を受け入れるように構成される、ステップと、
該切除電極の外側表面を部分的に囲む熱絶縁チャンバを提供するステップと、
該熱絶縁チャンバにセンサを取り付けるステップであって、該センサは、該切除電極の外部の区域の温度を表す信号を提供するように構成される、ステップと
を包含する、方法。 - 熱絶縁チャンバを提供することは、前記切除電極デバイスを組み立てる前に該熱絶縁チャンバを密閉することを含む、請求項20に記載の方法。
- 前記熱絶縁チャンバは、流体および固体材料のうちの少なくとも1つで満たされ、該流体は、空気、窒素、水、および食塩水のうちの少なくとも1つを含み、該固体材料は、発泡体、ポリマー、およびセラミック材料のうちの少なくとも1つを含む、請求項20に記載の方法。
- 前記熱絶縁チャンバは、合金、ポリマーおよびセラミック材料のうちの少なくとも1つから形成される、請求項20に記載の方法。
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EP2395934B1 (en) | 2019-04-17 |
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US11684416B2 (en) | 2023-06-27 |
US20150148796A1 (en) | 2015-05-28 |
US20190223951A1 (en) | 2019-07-25 |
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |