JP5299998B2 - マイクロ波電気外科システムにおける周波数同調 - Google Patents
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Description
組織切除のためのシステムであって、
標的組織の中への直接的な挿入のために構成されたマイクロ波アンテナと、
伝送回線によって該アンテナに結合されたマイクロ波エネルギー生成器であって、該マイクロ波エネルギー生成器は、該マイクロ波エネルギーの周波数を調節するように構成されている、マイクロ波エネルギー生成器と、
該アンテナの動作中に、反射電力信号を測定することが可能である、該伝送回線に結合されたモニタと、
該モニタと該マイクロ波エネルギー生成器との間で反射電力に関する情報を通信することが可能である通信回線と
を備えている、システム。
上記モニタは、双方向カプラを含み、該双方向カプラは、上記電力の上記反射信号と順方向信号とのうちの少なくとも1つをサンプリングするように構成されている、項目a−1に記載のシステム。
反射電力情報をオペレータに通信することが可能である視覚ディスプレイをさらに備えている、項目a−1〜項目a−2のうちのいずれか1項に記載のシステム。
上記周波数は、ソースのインピーダンスを約50オームにするように調節される、項目a−1〜項目a−3のうちのいずれか1項に記載のシステム。
上記反射電力信号は、所定の閾値に対し測定される、項目a−1〜項目a−4のうちのいずれか1項に記載のシステム。
上記反射電力信号が上記所定の閾値を超過したときに、上記マイクロ波エネルギーの上記周波数は、該反射電力信号を減少させるように調節される、項目a−1〜項目a−5のうちのいずれか1項に記載のシステム。
上記マイクロ波エネルギー生成器は、所定の周波数のマイクロ波エネルギーを提供し、かつ、生成器インピーダンスを有するように構成されている、項目a−1〜項目a−6のうちのいずれか1項に記載のシステム。
上記伝送回線に結合されたアクティブマッチングネットワークをさらに備えている、項目a−1〜項目a−7のうちのいずれか1項に記載のシステム。
上記アクティブマッチングネットワークは、上記生成器インピーダンスと、標的組織および該アクティブマッチングネットワークの等価インピーダンスとの間の実質的なマッチングを作り出すために、固定の誘導子と、少なくとも1つの可変コンポーネントとを含み、該少なくとも1つの可変コンポーネントは、直接的な電流制御信号を受信することが可能である、項目a−1〜項目a−8のうちのいずれか1項に記載のシステム。
生物学的切除の方法であって、
標的組織の近くにマイクロ波アンテナを配置することと、
所定の周波数において、マイクロ波エネルギーを該マイクロ波アンテナに送達することと、
該標的組織によって反射され伝送回線に戻る反射電力信号を測定することと、
該マイクロ波エネルギーの周波数を調節することにより、該反射電力信号を減少させることと
を包含する、方法。
患者の皮膚を介して上記アンテナを配置するためにトロカールを使用するステップをさらに包含する、項目b−1に記載の方法。
ソースのインピーダンスを約50オームにするように上記周波数を調節するステップをさらに包含する、項目b−1に記載の方法。
上記出力電力を調節するステップをさらに包含する、項目b−1に記載の方法。
測定された上記反射出力信号を所定の閾値と繰り返し比較するステップをさらに包含する、項目b−1に記載の方法。
上記反射電力信号を減少させるために、上記マイクロ波エネルギーの周波数を調節する上記ステップは、該反射電力信号が上記所定の閾値を超過したときに行われる、項目b−5に記載の方法。
組織切除のためのシステムであって、
標的組織の中への直接的な挿入のために構成されたマイクロ波アンテナと、
伝送回線によって該アンテナに結合されたマイクロ波エネルギー生成器であって、該マイクロ波エネルギー生成器は、該マイクロ波エネルギーの周波数を調節するように構成されている、マイクロ波エネルギー生成器と、
該アンテナの動作中に、反射電力信号を測定することが可能である該伝送回線に結合されたモニタと、
該モニタと該マイクロ波エネルギー生成器との間で反射電力に関する情報を通信することが可能である通信回線と
を備えている、システム。
上記モニタは、双方向カプラを含み、該双方向カプラは、上記電力の上記反射信号と順方向信号とのうちの少なくとも1つをサンプリングするように構成されている、項目b−7に記載のシステム。
オペレータに反射電力情報を通信することが可能である視覚ディスプレイをさらに備えている、項目b−7に記載のシステム。
組織切除のためのシステムであって、
標的組織の中への直接的な挿入のために構成されたマイクロ波アンテナと、
伝送回線によって該アンテナに結合されたマイクロ波エネルギー生成器であって、該マイクロ波エネルギー生成器は、所定の周波数のマイクロ波エネルギーを提供するように構成され、かつ、生成器インピーダンスを有する、マイクロ波エネルギー生成器と、
該伝送回線に結合されたアクティブマッチングネットワークであって、該アクティブマッチングネットワークは、生成器インピーダンスと、標的組織およびアクティブマッチングネットワークの等価インピーダンスとの間の実質的なマッチングを作り出すために、固定の誘導子と、直接的な電流制御信号を受信することが可能である少なくとも1つの可変コンポーネントとを備えている、アクティブマッチングネットワークと
を備えている、システム。
組織切除を行う方法であって、
標的組織の中に、または該標的組織の近くにマイクロ波切除デバイスを配置するステップと、
該標的組織に対する該切除デバイスの最初のインピーダンスマッチングのための切除パラメータを設定するステップと、
特定の周波数において、電気外科エネルギーを該切除デバイスに送達することにより、該標的組織に治療効果をもたらすステップと、
該電気外科エネルギーの送達の間に、該標的組織によって生成された反射電力信号を測定するステップと、
該反射電力が所定の閾値を超過したときに、該反射電力を減少させるために該電気外科エネルギーの該特定の周波数を調節するステップと
を包含する、方法。
治療効果をもたらす、生物学的組織の切除のための、方法と装置とが開示される。切除サイクルの間に、電気外科生成器の出力周波数に対して、調節が行われることにより、エネルギーが組織に伝達されたときに生じる、装置および生物学的組織の電気特性の変化に適応させる。調節は、ソースのインピーダンスを負荷のインピーダンスとより良く調整するために行われる。
xL=j86.66Ω xC=−j116Ω
の誘導反応値と容量反応値とをもたらす。
420 マイクロ波周波数生成器
430 増幅器
435 ディスプレイ
440 カプラ
450 伝送ケーブル
460 アンテナ
470 測定ボード
480 マイクロプロセッサ、マイクロコントローラ
Claims (2)
- 組織切除のためのシステムであって、該システムは、
標的組織の中への直接的な挿入のために構成されたマイクロ波アンテナと、
伝送回線によって該アンテナに結合されたマイクロ波エネルギー生成器であって、該マイクロ波エネルギー生成器は、該マイクロ波エネルギーの周波数を調節するように構成されている、マイクロ波エネルギー生成器と、
該マイクロ波エネルギー生成器から出力信号およびマイクロ波エネルギーのうちの少なくとも1つを受信するための入力回線と、
インピーダンスマッチングされた出力信号およびマイクロ波エネルギーのうちの少なくとも1つを該マイクロ波アンテナに伝送するための出力回線と、
該アンテナの動作中に、反射電力信号を測定することが可能である、該伝送回線に結合されたモニタと、
該モニタと該マイクロ波エネルギー生成器との間で反射電力に関する情報を通信することが可能である通信回線と、
反射電力情報をオペレータに通信することが可能である視覚ディスプレイと、
アクティブマッチングネットワークと
を備え、
該アクティブマッチングネットワークは、
該入力回線と該出力回線との間で直列に接続されている固定の誘導子と、
互いに直列に接続され、かつ、該固定の誘導子の上流の位置で該入力回線に接続されている第1のコンデンサおよび第1の同調ダイオードと、
互いに直列に接続され、かつ、該固定の誘導子の下流の位置で該出力回線に接続されている第2のコンデンサおよび第2の同調ダイオードと、
第1の供給回線を介して直流(DC)源に接続され、かつ、該第1のコンデンサと該第1の同調ダイオードとの間の点で接続されている第1の誘導子と、
第2の供給回線を介して直流(DC)源に接続され、かつ、該第2のコンデンサと該第2の同調ダイオードとの間の点で接続されている第2の誘導子と
を含み、
該第1の同調ダイオードおよび該第2の同調ダイオードは、オフ状態からオン状態に選択的に切り替え可能であることにより、該第1のコンデンサおよび該第2のコンデンサのうちの少なくとも1つを該固定の誘導子と共にアクティブ状態に置き、これにより、該生成器のインピーダンスと該標的組織のインピーダンスとの間の差分を補償し、
該モニタは、双方向カプラを含み、該双方向カプラは、該電力の該反射信号と順方向信号とのうちの少なくとも1つをサンプリングするように構成されており、
該周波数は、該マイクロ波エネルギー生成器のインピーダンスを約50オームにするように調節され、
該反射電力信号は、所定の閾値と比較され、
該反射電力信号が該所定の閾値を超過したときに、該マイクロ波エネルギーの該周波数は、該反射電力信号を減少させるように調節される、システム。 - 前記マイクロ波エネルギー生成器は、所定の周波数のマイクロ波エネルギーを提供し、かつ、生成器インピーダンスを有するように構成されている、請求項1に記載のシステム。
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US11/900,874 US8747398B2 (en) | 2007-09-13 | 2007-09-13 | Frequency tuning in a microwave electrosurgical system |
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US8361067B2 (en) | 2002-09-30 | 2013-01-29 | Relievant Medsystems, Inc. | Methods of therapeutically heating a vertebral body to treat back pain |
US7258690B2 (en) | 2003-03-28 | 2007-08-21 | Relievant Medsystems, Inc. | Windowed thermal ablation probe |
WO2007112081A1 (en) | 2006-03-24 | 2007-10-04 | Micrablate | Transmission line with heat transfer ability |
US11389235B2 (en) | 2006-07-14 | 2022-07-19 | Neuwave Medical, Inc. | Energy delivery systems and uses thereof |
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-
2007
- 2007-09-13 US US11/900,874 patent/US8747398B2/en active Active
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2008
- 2008-09-05 CA CA2639366A patent/CA2639366C/en not_active Expired - Fee Related
- 2008-09-08 AU AU2008212053A patent/AU2008212053B2/en not_active Ceased
- 2008-09-09 EP EP15201761.2A patent/EP3025663B1/en active Active
- 2008-09-09 EP EP08015842.1A patent/EP2036512B1/en active Active
- 2008-09-12 JP JP2008235231A patent/JP5299998B2/ja active Active
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2014
- 2014-06-10 US US14/300,824 patent/US9498285B2/en active Active
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CA2639366C (en) | 2016-08-16 |
US8747398B2 (en) | 2014-06-10 |
AU2008212053A1 (en) | 2009-04-02 |
JP2009066415A (ja) | 2009-04-02 |
EP2036512B1 (en) | 2016-02-17 |
AU2008212053B2 (en) | 2013-02-21 |
EP2036512A1 (en) | 2009-03-18 |
US9498285B2 (en) | 2016-11-22 |
US20170056108A1 (en) | 2017-03-02 |
US20140296840A1 (en) | 2014-10-02 |
EP3025663A1 (en) | 2016-06-01 |
CA2639366A1 (en) | 2009-03-13 |
US20090076492A1 (en) | 2009-03-19 |
EP3025663B1 (en) | 2018-05-09 |
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