JP2011189122A - 焼灼の大きさを監視するためのシステムおよび方法 - Google Patents
焼灼の大きさを監視するためのシステムおよび方法 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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
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- A61B2017/00017—Electrical control of surgical instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
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- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00666—Sensing and controlling the application of energy using a threshold value
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
- A61B2018/1869—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves with an instrument interstitially inserted into the body, e.g. needles
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Abstract
【解決手段】システムは、少なくとも1つの制御アルゴリズムを実行するためのマイクロプロセッサを含んだ電力源を備える。マイクロ波アンテナ100は、焼灼域を形成するため、電力源から組織にマイクロ波エネルギーを送達するように構成される。一連の熱センサ136は、マイクロ波アンテナの放射部に近接して作動可能に配置され、そこから近位方向に伸長する。熱センサは焼灼域の半径に対応し、各熱センサは、所定の閾値の組織温度が対応する焼灼域の半径に到達すると電圧を発生させる。
【選択図】図3A
Description
Claims (18)
- 少なくとも1つの制御アルゴリズムを実行するためのマイクロプロセッサを備える電力源と、
焼灼域を形成するため、前記電力源から組織にマイクロ波エネルギーを送達するように構成されたマイクロ波アンテナと、
前記マイクロ波アンテナの放射部に近接して作動可能に配置され、そこから近位方向に伸長する一連の熱センサであって、前記焼灼域の半径に対応する前記一連の熱センサとを具備し、前記熱センサの各々は、所定の閾値の組織温度が、対応する前記焼灼域の半径に到達すると所定の電圧を発生させることを特徴とする、焼灼の大きさを監視するためのシステム。 - 前記マイクロ波アンテナおよび前記電力源と実行可能に通信し、近接する組織に対する損傷を最小限に抑えつつ好適な比率の均一な焼灼域を創出するため、前記一連の熱センサのうちの1つにより所定の電圧が発生されると、前記マイクロ波アンテナに送達されるマイクロ波エネルギーの量を調整するため、前記電力源に指示を出すように構成された温度モジュールをさらに備えることを特徴とする、請求項1に記載のシステム。
- 前記一連の熱センサが、前記マイクロ波アンテナに結合したシャフトの内部に作動可能に位置付けられることを特徴とする、請求項1に記載のシステム。
- 前記温度モジュールおよび前記一連の熱センサは、前記電力源が有効化されると稼働されることを特徴とする、請求項2に記載のシステム。
- 前記温度モジュールおよび前記一連の熱センサは、前記電力源が無効化されると稼働されることを特徴とする、請求項2に記載のシステム。
- 前記一連の熱センサは、サーミスタ、熱電対、および光ファイバーの温度監視用素子から成る群から選択されることを特徴とする、請求項1に記載のシステム。
- 前記一連の熱センサは、前記マイクロ波アンテナの前記シャフトに沿って直線配列およびらせん配列のうちの1つの配列で配置されることを特徴とする、請求項1に記載のシステム。
- 前記マイクロ波アンテナは、球状および楕円状のうちの1つの形状の焼灼域を作り出すように構成されることを特徴とする、請求項1に記載のシステム。
- 前記少なくとも1つの制御アルゴリズムは、前記一連の熱センサおよび対応する半径と関連付いた、前記所定の閾値の温度を予測するために、組織壊死を算出することを特徴とする、請求項1に記載のシステム。
- 組織壊死を算出するに必要な変数が、頻度因子、活性化エネルギー、絶対温度、および気体定数から成る群から選択されることを特徴とする、請求項9に記載のシステム。
- 前記焼灼域に近接する前記マイクロ波アンテナおよび組織のうちの1つの冷却を促すために、前記マイクロ波アンテナに冷却流体を供給するように構成された少なくとも1つの流体ポンプをさらに備えることを特徴とする、請求項1に記載のシステム。
- 焼灼を受ける組織の温度を監視するための方法であって、
組織の焼灼域を形成するため、電力源からマイクロ波アンテナにマイクロ波エネルギーを送達するステップと、
前記組織の焼灼域が形成してゆく、前記マイクロ波アンテナに沿った組織温度の近位方向の伝播を監視するステップと、
所定の組織温度が、前記マイクロ波アンテナに沿った特定ポイントに到達すると検出信号を生じさせるステップと、
前記電力源から前記マイクロ波アンテナへの前記マイクロ波エネルギーの量を調整するステップとを含む、方法。 - 組織を監視する前記ステップが、前記マイクロ波アンテナの放射部に近接して作動可能に配置され、そこから近位方向に伸長する一連の熱センサであって、前記焼灼域の半径に対応する前記一連の熱センサを、前記マイクロ波アンテナに提供するステップをさらに含み、前記熱センサの各々は、所定の閾値の組織温度が、対応する前記焼灼域の半径に到達すると電圧を発生させることを特徴とする、請求項12に記載の方法。
- 焼灼域を形成するため、電力源から組織にマイクロ波エネルギーを送達するように構成された放射部と、
前記マイクロ波アンテナの前記放射部に近接して作動可能に配置され、そこから近位方向に伸長する一連の熱センサであって、前記焼灼域の半径に対応する前記一連の熱センサとを具備し、前記熱センサの各々は、所定の閾値の組織温度が、対応する前記焼灼域の半径に到達すると所定の電圧を発生させることを特徴とする、焼灼処置を行うために構成された電力源に接続するように適合されたマイクロ波アンテナ。 - 温度モジュールは、前記マイクロ波アンテナおよび前記電力源と実行可能に通信し、近接する組織に対する損傷を最小限に抑えつつ好適な比率の均一な焼灼域を創出するため、前記一連の熱センサのうちの1つにより所定の電圧が発生されると、前記マイクロ波アンテナに送達されるマイクロ波エネルギーの量を調整するため、前記電力源に指示を出すように構成されることを特徴とする、請求項14に記載のマイクロ波アンテナ。
- 前記温度モジュールが、前記電力源内に作動可能に配置されることを特徴とする、請求項14に記載のマイクロ波アンテナ。
- 前記温度モジュールが、前記マイクロ波アンテナ内に作動可能に配置されることを特徴とする、請求項14に記載のマイクロ波アンテナ。
- 前記温度モジュールは、いつ所定の電圧が前記熱センサの各々により発生されるかを特定するため、前記熱センサの各々を監視することを特徴とする、請求項15に記載のマイクロ波アンテナ。
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US12/712,864 | 2010-02-25 | ||
US12/712,864 US20110208180A1 (en) | 2010-02-25 | 2010-02-25 | System and Method for Monitoring Ablation Size |
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- 2011-02-25 EP EP11001596.3A patent/EP2361583B1/en active Active
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Also Published As
Publication number | Publication date |
---|---|
EP2361583B1 (en) | 2016-04-20 |
EP2361583A1 (en) | 2011-08-31 |
US20110208180A1 (en) | 2011-08-25 |
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