JP5489282B2 - 二次周波数を使用する組織インピーダンス測定 - Google Patents
二次周波数を使用する組織インピーダンス測定 Download PDFInfo
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Description
本開示は、概して、マイクロ波アンテナを有するマイクロ波外科用デバイスを利用するマイクロ波切除処置に関し、このマイクロ波アンテナは、疾患の診断および治療のために組織に直接挿入され得る。より具体的には、本開示は、マイクロ波切除処置の間に、組織インピーダンスを測定することに関する。
癌のような疾患の治療において、特定のタイプの癌細胞は上昇した温度(健康な細胞に対して通常は有害な温度よりも僅かに低い)において変性することが見出されている。概して温熱療法として公知である、これらのタイプの治療は、一般的に、隣接する健康な細胞を、回復不能の細胞破壊が生じない、より低い温度に維持しながら、疾患の細胞を41℃よりも高い温度に加熱するために電磁放射を利用する。組織を加熱するために電磁放射を利用する他の処置は、組織の切除および凝固をまた含む。例えば月経過多に対して実行される処置のような、そのようなマイクロ波切除処置は、標的組織を切除あるいは凝固して、組織を変性するかあるいは殺すために一般になされる。電磁放射療法を利用する多くの処置および多くのタイプのデバイスが、当該分野では公知である。そのようなマイクロ波療法は、組織、ならびに、前立腺、心臓、肝臓、肺、腎臓、および胸部のような器官の治療において一般に使用される。
本開示はマイクロ波切除システムを提供する。マイクロ波切除は、第1のエネルギー供給源と、第2のエネルギー供給源と、ダイプレクサとを含む発生器を含み、該ダイプレクサは、第1のエネルギー供給源からの第1のエネルギーと第2のエネルギー供給源からの第2のエネルギーを多重化するように動作可能である。中央コンダクタと外側シースとを含むケーブルが、また提供される。多重化されたエネルギーは、中央コンダクタを通って伝送される。また、多重化されたエネルギーを中央コンダクタから受信し、多重化されたエネルギーを組織の領域に送達するように動作可能なアンテナが提供される。外側シースは、第2のエネルギー供給源への第2のエネルギーの戻り経路として動作する。センサがまた提供され、センサは、第2のエネルギー供給源によって生成された第2のエネルギー、および、組織の領域から戻る第2のエネルギーの少なくとも1つのパラメータを測定する。
(項目1)
マイクロ波切除システムであって、
第1のエネルギー供給源と、第2のエネルギー供給源と、ダイプレクサとを含む発生器であって、該ダイプレクサは、該第1のエネルギー供給源からの第1のエネルギーと、該第2のエネルギー供給源からの第2のエネルギーとを多重化するように動作可能である、発生器と、
中央コンダクタと外側シースとを含むケーブルであって、該多重化されたエネルギーは該中央コンダクタを通って伝送されている、ケーブルと、
該多重化されたエネルギーを該中央コンダクタから受け取り、該多重化されたエネルギーを組織の領域に送達するように動作可能であるアンテナであって、該外側シースは該第2のエネルギーの該第2のエネルギー供給源への戻り経路として動作する、アンテナと、
該第2のエネルギー供給源によって生成された該第2のエネルギー、および、該組織の領域から戻された該第2のエネルギーのうちの少なくとも1つのパラメータを測定するように動作可能なセンサと
を備えている、マイクロ波切除システム。
(項目2)
コントローラをさらに含み、該コントローラは、上記センサから上記測定されたパラメータを受信し、該測定されたパラメータに基づいて、上記第1のエネルギー供給源を制御するように動作可能である、項目1に記載のマイクロ波切除システム。
(項目3)
上記測定されたパラメータは、電圧および/または電流であり、上記コントローラは、該電圧および/または電流に基づいて、組織インピーダンスを計算する、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目4)
上記コントローラは、上記組織インピーダンスに基づいて、上記第1のエネルギー供給源の出力レベルを制御する、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目5)
上記第1のエネルギー供給源は、マイクロ波発生器であり、上記第1のエネルギーは、マイクロ波エネルギーである、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目6)
上記第2のエネルギー供給源は、無線周波数(RF)発生器であり、上記第2のエネルギーは、RFエネルギーである、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目7)
マイクロ波切除システムであって、
第1のエネルギー供給源と、第2のエネルギー供給源と、ダイプレクサとを含む発生器であって、該ダイプレクサは、該第1のエネルギー供給源からの第1のエネルギーと、該第2のエネルギー供給源からの第2のエネルギーとを多重化するように動作可能である、発生器と、
中央コンダクタと外側シースとを含むケーブルであって、該多重化されたエネルギーは該中央コンダクタを通って伝送されている、ケーブルと、
該多重化されたエネルギーを該中央コンダクタから受け取り、該多重化されたエネルギーを組織の領域に送達するように動作可能であるアンテナと、
該アンテナから出力された該第2のエネルギーを受け取るように動作可能な戻りパッドであって、該戻りパッドは該第2のエネルギーを該第2のエネルギー供給源に伝送する、戻りパッドと、
該第2のエネルギー供給源によって生成された該第2のエネルギー、および、該戻りパッドから戻された該第2のエネルギーのうちの少なくとも1つのパラメータを測定するように動作可能なセンサと
を備えている、マイクロ波切除システム。
(項目8)
コントローラをさらに含み、該コントローラは、上記測定されたパラメータを上記センサから受信するように動作可能であり、該測定されたパラメータに基づいて、上記第1のエネルギー供給源を制御するように動作可能である、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目9)
上記測定されたパラメータは、電圧、電流および/または位相であり、上記コントローラは、該電圧、電流および/または位相に基づいて、組織インピーダンスを計算する、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目10)
上記コントローラは、上記組織インピーダンスに基づいて、上記第1のエネルギー供給源の出力レベルを制御する、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目11)
上記第1のエネルギー供給源は、マイクロ波発生器であり、上記第1のエネルギーはマイクロ波エネルギーである、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目12)
上記第2のエネルギー供給源は、無線周波数(RF)発生器であり、上記第2のエネルギーはRFエネルギーである、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目13)
マイクロ波エネルギーを使用して組織を切除する方法であって、該方法は、
マイクロ波エネルギーを生成するステップと、
無線周波数(RF)エネルギーを生成するステップと、
該マイクロ波エネルギーと該RFエネルギーとを多重化し、該多重化されたエネルギーを組織領域に出力するステップと、
該組織領域から戻された該RFエネルギーを受け取るステップと、
該生成されたRFエネルギー、および該組織領域から戻された該RFエネルギーのパラメータを測定するステップと、
該測定されたパラメータに基づいて生成されるマイクロ波エネルギーのレベルを制御するステップと
を含む、マイクロ波切除方法。
(項目14)
上記測定されたパラメータは、電圧、電流および/または位相である、上記項目のいずれか1項に記載のマイクロ波切除方法。
(項目15)
上記測定された電圧、電流および/または位相に基づいて、組織インピーダンスを計算するステップをさらに含む、上記項目のいずれか1項に記載のマイクロ波切除方法。
(項目16)
上記生成されたマイクロ波エネルギーのレベルは、上記計算された組織インピーダンスに基づいている、上記項目のいずれか1項に記載のマイクロ波切除方法。
(項目17)
マイクロ波エネルギーを使用して組織を切除するためのシステムであって、該システムは、
マイクロ波エネルギー発生器と、
無線周波数(RF)エネルギー発生器と、
該マイクロ波エネルギーと該RFエネルギーとを多重化し、該多重化されたエネルギーを組織領域に出力するための手段と、
該組織領域から戻された該RFエネルギーを受け取るための手段と、
該生成されたRFエネルギー、および該組織領域から戻された該RFエネルギーのパラメータを測定するための手段と、
該測定されたパラメータに基づいて生成されるマイクロ波エネルギーのレベルを制御するための手段と
を含む、マイクロ波切除システム。
(項目18)
上記測定されたパラメータは、電圧、電流および/または位相である、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目19)
上記測定された電圧、電流および/または位相に基づいて、組織インピーダンスを計算するための手段をさらに含む、上記項目のいずれか1項に記載のマイクロ波切除システム。
(項目20)
上記生成されたマイクロ波エネルギーのレベルは、上記計算された組織インピーダンスに基づいている、上記項目のいずれか1項に記載のマイクロ波切除システム。
マイクロ波切除システムは、第1のエネルギー供給源と、第2のエネルギー供給源と、ダイプレクサとを含む発生器を含み、該ダイプレクサは、該第1のエネルギー供給源からの第1のエネルギーと、該第2のエネルギー供給源からの第2のエネルギーとを多重化するように動作可能である。システムは、また、中央コンダクタと外側シースとを含むケーブルを含み、該多重化されたエネルギーは該中央コンダクタを通って伝送されている。さらに、該多重化されたエネルギーを該中央コンダクタから受け取り、該多重化されたエネルギーを組織の領域に送達するように動作可能であるアンテが提供される。該外側シースは該第2のエネルギーの該第2のエネルギー供給源への戻り経路として動作する。該第2のエネルギー供給源によって生成された該第2のエネルギー、および、該組織の領域から戻された該第2のエネルギーのうちの少なくとも1つのパラメータを測定するように動作可能なセンサがまた提供される。
本開示の特定の実施形態が、添付の図面を参照して以下で記述される。しかしながら、開示される実施形態は、開示の単なる例示であり、様々な形態で具体化され得ることが、理解されるべきである。周知の機能または構造物は、不必要な詳細で本開示をあいまいにすることを避けるために、詳細には記述されない。したがって、本明細書において開示される、特定の構造的な詳細および特定の機能的な詳細は、限定として解釈されるべきではなく、単に、特許請求の範囲に対する根拠として、そして、事実上、適切に詳細に説明されたあらゆる構造において本開示を様々に利用するために、当業者を教示するための代表的な根拠として解釈されるべきである。同様な参照番号は、図面の記述全体を通して、同様な要素または同一の要素を指し得る。
15 ケーブル
16 コネクタ
28 電力発生源、発生器
100 マイクロ波アンテナアセンブリ
110 供給線
105 遠位放射部分
122 トロカール
130 絶縁パック
131 冷却剤流入ポート
133 冷却剤流出ポート
140 近位放射部分
148 冷却剤チャンバ
Claims (12)
- マイクロ波切除システムであって、
第1のエネルギー供給源と、第2のエネルギー供給源と、ダイプレクサとを含む発生器であって、該ダイプレクサは、該第1のエネルギー供給源からの第1のエネルギーと、該第2のエネルギー供給源からの第2のエネルギーとを多重化するように動作可能である、発生器と、
中央コンダクタと外側シースとを含むケーブルであって、該多重化されたエネルギーは該中央コンダクタを通って伝送されている、ケーブルと、
該多重化されたエネルギーを該中央コンダクタから受け取り、該多重化されたエネルギーを組織の領域に送達するように動作可能であるアンテナであって、該外側シースは該第2のエネルギーの該第2のエネルギー供給源への戻り経路として動作する、アンテナと、
該第2のエネルギー供給源によって生成された該第2のエネルギー、および、該組織の領域から戻された該第2のエネルギーのうちの少なくとも1つのパラメータを測定するように動作可能なセンサと
を備えている、マイクロ波切除システム。 - コントローラをさらに含み、該コントローラは、前記センサから前記測定されたパラメータを受信し、該測定されたパラメータに基づいて、前記第1のエネルギー供給源を制御するように動作可能である、請求項1に記載のマイクロ波切除システム。
- 前記測定されたパラメータは、電圧および/または電流であり、前記コントローラは、該電圧および/または電流に基づいて、組織インピーダンスを計算する、請求項2に記載のマイクロ波切除システム。
- 前記コントローラは、前記組織インピーダンスに基づいて、前記第1のエネルギー供給源の出力レベルを制御する、請求項3に記載のマイクロ波切除システム。
- 前記第1のエネルギー供給源は、マイクロ波発生器であり、前記第1のエネルギーは、マイクロ波エネルギーである、請求項1に記載のマイクロ波切除システム。
- 前記第2のエネルギー供給源は、無線周波数(RF)発生器であり、前記第2のエネルギーは、RFエネルギーである、請求項1に記載のマイクロ波切除システム。
- マイクロ波切除システムであって、
第1のエネルギー供給源と、第2のエネルギー供給源と、ダイプレクサとを含む発生器であって、該ダイプレクサは、該第1のエネルギー供給源からの第1のエネルギーと、該第2のエネルギー供給源からの第2のエネルギーとを多重化するように動作可能である、発生器と、
中央コンダクタと外側シースとを含むケーブルであって、該多重化されたエネルギーは該中央コンダクタを通って伝送されている、ケーブルと、
該多重化されたエネルギーを該中央コンダクタから受け取り、該多重化されたエネルギーを組織の領域に送達するように動作可能であるアンテナと、
該アンテナから出力された該第2のエネルギーを受け取るように動作可能な戻りパッドであって、該戻りパッドは該第2のエネルギーを該第2のエネルギー供給源に伝送する、戻りパッドと、
該第2のエネルギー供給源によって生成された該第2のエネルギー、および、該戻りパッドから戻された該第2のエネルギーのうちの少なくとも1つのパラメータを測定するように動作可能なセンサと
を備えている、マイクロ波切除システム。 - コントローラをさらに含み、該コントローラは、前記測定されたパラメータを前記センサから受信するように動作可能であり、該測定されたパラメータに基づいて、前記第1のエネルギー供給源を制御するように動作可能である、請求項7に記載のマイクロ波切除システム。
- 前記測定されたパラメータは、電圧、電流および/または位相であり、前記コントローラは、該電圧、電流および/または位相に基づいて、組織インピーダンスを計算する、請求項8に記載のマイクロ波切除システム。
- 前記コントローラは、前記組織インピーダンスに基づいて、前記第1のエネルギー供給源の出力レベルを制御する、請求項9に記載のマイクロ波切除システム。
- 前記第1のエネルギー供給源は、マイクロ波発生器であり、前記第1のエネルギーはマイクロ波エネルギーである、請求項7に記載のマイクロ波切除システム。
- 前記第2のエネルギー供給源は、無線周波数(RF)発生器であり、前記第2のエネルギーはRFエネルギーである、請求項7に記載のマイクロ波切除システム。
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US8246615B2 (en) | 2012-08-21 |
US20100298822A1 (en) | 2010-11-25 |
US10675090B2 (en) | 2020-06-09 |
JP2010269148A (ja) | 2010-12-02 |
US20120310234A1 (en) | 2012-12-06 |
EP2253286B1 (en) | 2013-03-20 |
US20200268446A1 (en) | 2020-08-27 |
US9504524B2 (en) | 2016-11-29 |
US20130338661A1 (en) | 2013-12-19 |
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