JP5722215B2 - 階段状の出力で切断及び凝固するための超音波装置 - Google Patents
階段状の出力で切断及び凝固するための超音波装置 Download PDFInfo
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Description
本特許出願は、(1)「Ultrasonic Device for Cutting and Coagulating with Stepped Output」と題する米国特許仮出願第61/086619号(2008年8月6日付出願)及び(2)「Ultrasonic Device for Cutting and Coagulating with Stepped Output」と題する米国特許仮出願第61/188790号(2008年8月13日付出願)に関してアメリカ合衆国条例119項(e)第35章に基づく利益を主張し、上記の両方の仮出願の全ては、参照によりここに組み込まれる。
本開示は、概して超音波手術システムに関するものであり、より特定すると、外科医が切断及び凝固を実行することを可能にする超音波システムに関する。
FT=FA(X2/X1) (1)
Stf=αYtf+(1−α)Stf−1 (2)
式中、
Stf=抽出された周波数信号の現在の移動平均
Stf−1=抽出された周波数信号のその前の移動平均
α=平滑化係数
Ytf=抽出された周波数信号の現在のデータ点
周波数勾配=Δf/Δt (3)
S’tf=α’Y’tf+(1−α’)S’tf−1 (4)
式中、
S’tf=抽出された周波数信号の周波数勾配の現在の移動平均
S’tf−1=抽出された周波数信号の周波数勾配のその前の移動平均
α’=平滑化係数
Y’tf=抽出された周波数信号の現在の勾配データ点
Stv=αYtv+(1−α)Stv−1 (5)
式中、
Stv=抽出された電圧信号の現在の移動平均
Stv−1=抽出された電圧信号のその前の移動平均
α=平滑化係数
Ytv=抽出された電圧信号の現在のデータ点
電圧勾配=Δv/Δt (6)
S’tv=α’Y’tv+(1−α’)S’tv−1 (7)
式中、
S’tv=抽出された電圧信号の電圧勾配の現在の移動平均
S’tv−1=抽出された電圧信号の電圧勾配のその前の移動平均
α’=平滑化係数
Y’tv=抽出された電圧信号の現在の勾配データ点
(1) 手術器具の超音波駆動システムに連結されたエンドエフェクタを駆動するための方法であって、
第1の超音波駆動信号を、超音波駆動システムに連結された発生器によって生成することにおいて、前記超音波駆動システムが、導波管に連結された超音波トランスデューサと、前記導波管に連結されたエンドエフェクタとを備えており、前記超音波駆動システムが共振周波数で共振するように構成されている、生成することと、
前記超音波トランスデューサを第1の期間にかけて前記第1の超音波駆動信号で作動させることと、
第2の超音波駆動信号を前記発生器によって生成することと、
前記超音波トランスデューサを前記第1の期間の後に、第2の期間にかけて前記第2の超音波駆動信号で作動させることと、を含み、
前記第1の駆動信号は、前記第1及び第2のそれぞれの期間にかけて、前記第2の駆動信号と異なり、
前記第1及び第2の駆動信号は、前記第1及び第2の期間にかけて階段関数波形を画定する、方法。
(2) 第3の超音波駆動信号を前記発生器によって生成することと、
前記超音波トランスデューサを第3の期間にかけて前記第3の超音波駆動信号で作動させることと、を含み、
前記第3の駆動信号が、前記第1、第2、及び第3の期間にかけて、前記第1及び第2の駆動信号と異なり、
前記第1、第2、及び第3の駆動信号が、前記第1、第2、及び第3の期間にかけて階段関数波形を画定する、実施態様1に記載の方法。
(3) 前記第1、第2、及び第3の超音波駆動信号を生成することが、対応する第1、第2、及び第3の駆動電流を生成することを含み、
前記超音波トランスデューサを作動させることが、
前記超音波トランスデューサを前記第1の期間にかけて前記第1の駆動電流で作動させることと、
前記超音波トランスデューサを前記第2の期間にかけて前記第2の駆動電流で作動させることと、
前記超音波トランスデューサを前記第3の期間にかけて前記第3の駆動電流で作動させることと、を含む、実施態様2に記載の方法。
(4) 前記第1の超音波駆動信号を、前記共振周波数と異なる第1の周波数で生成することと、
第1の組織を第2の組織から分離するために適した前記エンドエフェクタに第1のレベルの機械振動を提供するために、前記超音波トランスデューサを前記第1の期間にかけて前記第1の周波数において前記第1の超音波駆動信号で作動させることと、
前記第2の超音波駆動信号を前記共振周波数で生成することと、
第2のレベルの機械振動を前記第1の組織の離断及び封着に適した前記エンドエフェクタに提供するために、前記超音波トランスデューサを前記第1の期間の後に前記第2の期間にかけて前記共振周波数において前記第2の超音波駆動信号で作動させることと、を含む、実施態様1に記載の方法。
(5) 第1の周波数が前記共振周波数と実質的に異なり、前記第1の期間が1秒未満である、実施態様4に記載の方法。
(6) 前記第1の周波数が、下記等式
f1=2*foによって定義され、
式中、f1は前記第1の周波数であり、
式中、foは前記共振周波数である、実施態様5に記載の方法。
(7) 前記第1の周波数が、下記等式
f1=fo/2によって定義され、
式中、f1は前記第1の周波数であり、
式中、foは前記共振周波数である、実施態様5に記載の方法。
(8) 前記第2の超音波駆動信号を前記共振周波数で前記第1の期間の後に自動的に生成することを含む、実施態様4に記載の方法。
(9) 前記超音波駆動システムの測定可能な特性をモニタリングすることと、
測定された特性に基づいて前記第1及び第2の駆動信号の任意の1つを生成することと、を含む、実施態様1に記載の方法。
(10) 前記測定可能な特性が、前記超音波トランスデューサのインピーダンスである、実施態様9に記載の方法。
(12) 治療レベル未満の無線周波数(RF)信号を生成することと、
前記RF信号を前記組織の部分に適用することと、
前記組織の部分の前記インピーダンスを測定することと、を含む、実施態様11に記載の方法。
(13) 手術器具の超音波駆動システムに連結されたエンドエフェクタを駆動するための装置であって、
超音波器具の超音波駆動システムに連結されるように構成された発生器を備え、前記超音波駆動システムは、導波管に連結された超音波トランスデューサと、前記導波管に連結されたエンドエフェクタとを備え、
前記発生器は、
第1の超音波駆動信号を生成し、
前記超音波トランスデューサを第1の期間にかけて前記第1の超音波駆動信号で作動させ、
第2の超音波駆動信号を前記発生器によって生成し、
前記超音波トランスデューサを前記第1の期間の後に、第2の期間にかけて前記第2の超音波駆動信号で作動させるように構成され、
前記第1の駆動信号は、前記第1及び第2のそれぞれの期間にかけて、前記第2の駆動信号と異なり、
前記第1及び第2の駆動信号は、前記第1及び第2の期間にかけて階段関数波形を画定する、装置。
(14) 前記超音波駆動システムの測定可能な特性をモニタリングするために測定モジュールを備え、前記発生器が、測定された特性に基づいて前記第1及び第2の駆動信号の任意の1つを生成するように構成される、実施態様13に記載の装置。
(15) 前記測定モジュールが、
前記エンドエフェクタに連結された無線周波数(RF)発生器であって、治療レベル未満のRF信号を生成するように構成されている、無線周波数発生器と、
前記超音波駆動システムの遠位端に連結されたクランプアームアセンブリと、を備え、前記クランプアームアセンブリが、前記RF発生器に連結された帰線電極を形成する導電体部分を備えており、前記クランプアームアセンブリが、間に組織を把持するために前記エンドエフェクタに動作可能に連結されている、実施態様14に記載の装置。
(16) 前記測定モジュールが、
電圧感知モジュールと、
電流感知モジュールと、
前記電圧感知モジュール及び前記電流感知モジュールに連結されたアナログ−デジタル変換器(ADC)と、
前記ADCに連結されたプロセッサと、を備え、前記プロセッサが、インピーダンスを測定するように構成されている、実施態様14に記載の装置。
(17) 手術器具の超音波システムに連結されたエンドエフェクタを駆動するためのシステムであって、
発生器と、
前記発生器に連結された超音波駆動システムを備える超音波器具と、を備え、前記超音波駆動システムは、導波管に連結された超音波トランスデューサと、前記導波管に連結されたエンドエフェクタとを備え、
前記発生器は、
第1の超音波駆動信号を生成し、
前記超音波トランスデューサを第1の期間にかけて前記第1の超音波駆動信号で作動させ、
第2の超音波駆動信号を前記発生器によって生成し、
前記超音波トランスデューサを前記第1の期間の後に、第2の期間にかけて前記第2の超音波駆動信号で作動させるように構成され、
前記第1の駆動信号は、前記第1及び第2のそれぞれの期間にかけて、前記第2の駆動信号と異なり、
前記第1及び第2の駆動信号は、前記第1及び第2の期間にかけて階段関数波形を画定する、システム。
(18) 前記発生器が前記超音波駆動システムの測定可能な特性をモニタリングするために測定モジュールを備え、前記発生器が、測定された特性に基づいて前記第1及び第2の駆動信号の任意の1つを生成するように構成される、実施態様17に記載のシステム。
(19) 前記測定モジュールが、
前記エンドエフェクタに連結された無線周波数(RF)発生器であって、治療レベル未満のRF信号を生成するように構成されている、無線周波数発生器と、
前記超音波駆動システムの遠位端に連結されたクランプアームアセンブリと、を備え、前記クランプアームアセンブリが、前記RF発生器に連結された帰線電極を形成する導電体部分を備えており、前記クランプアームアセンブリが、間に組織を把持するために前記エンドエフェクタに動作可能に連結されている、実施態様18に記載のシステム。
(20) 前記測定モジュールが、
電圧感知モジュールと、
電流感知モジュールと、
前記電圧感知モジュール及び前記電流感知モジュールに連結されたアナログ−デジタル変換器(ADC)と、
前記ADCに連結されたプロセッサと、を備え、前記プロセッサが、インピーダンスを測定するように構成される、実施態様18に記載のシステム。
プロセッサによって、超音波トランスデューサを駆動するために発生器の1つ又は2つ以上の駆動信号を抽出することと、
前記プロセッサによって、その抽出された駆動信号の少なくとも1つの第1の加重移動平均を計算することと、
前記プロセッサによって、その計算された、前記抽出された駆動信号の少なくとも1つの第1の移動平均の勾配を計算することと、
前記プロセッサによって、前記抽出された駆動信号の前記勾配の第2の加重移動平均を計算することと、
前記プロセッサによって、前記勾配の移動平均を計算することと、
前記プロセッサによって、前記勾配の前記第2の加重移動平均と、前記勾配の前記移動平均とを比較することと、
前記プロセッサによって、その比較に基づいて組織の状態の変化の発生を決定することと、を含む、方法。
(22) 前記プロセッサによって、前記組織の状態の変化が発生したときに出力インジケータを作動させることを含む、実施態様21に記載の方法。
(23) 前記出力インジケータを作動させることが、前記組織の状態の変化の発生を前記超音波手術器具のユーザーに通知するために、視覚的、可聴、及び触覚的フィードバックの任意の1つを作動させることを含む、実施態様22に記載の方法。
(24) 前記出力インジケータに応答して、前記プロセッサによって、前記発生器の出力電力を切断することを含む、実施態様22に記載の方法。
(25) 前記出力インジケータに応答して、前記プロセッサによって、前記発生器の出力電力を低減することを含む、実施態様22に記載の方法。
(26) 前記出力インジケータに応答して、前記プロセッサによって、前記発生器の出力電力をサイクリングすることを含む、実施態様22に記載の方法。
(27) 前記出力インジケータに応答して、前記プロセッサによって、前記発生器の出力電力をパルシングし、前記発生器から高電力瞬間サージを出力することを含む、実施態様22に記載の方法。
(28) 前記プロセッサによって、前記抽出された駆動信号の少なくとも1つの前記第1の加重移動平均を計算することが、前記プロセッサによって、下記の式
St=αYt+(1−α)St−1
にしたがって、前記抽出された駆動信号の指数加重移動平均を計算することを含み、
式中、
Stは、前記抽出された駆動信号の現在の移動平均であり、
St−1は、前記抽出された駆動信号の、1つ前の移動平均であり、
αは平滑化係数であり、
Ytは、前記抽出された駆動信号の現在のデータ点である、実施態様21に記載の方法。
(29) 前記プロセッサによって、前記抽出された駆動信号の前記勾配の前記第2の加重移動平均を計算することが、前記プロセッサによって、下記の式
S’t=α’Y’t+(1−α’)S’t−1
にしたがって、前記抽出された駆動信号の前記勾配の前記第2の加重移動平均を計算することを含み、
式中、
S’tは、前記抽出された駆動信号の勾配の現在の移動平均であり、
S’t−1は、前記抽出された駆動信号の前記勾配の、1つ前の移動平均であり、
α’は平滑化係数であり、
Y’tは、前記抽出された駆動信号の前記勾配の現在の勾配データ点である、実施態様28に記載の方法。
(30) 前記抽出された駆動信号が周波数信号であり、前記プロセッサによって前記比較に基づいて前記組織の状態の変化の発生を決定することが、前記プロセッサによって周波数変曲点を決定することを含む、実施態様21に記載の方法。
Claims (10)
- 手術器具の超音波駆動システムに連結されたエンドエフェクタを駆動するための装置であって、
超音波器具の超音波駆動システムに連結されるように構成された発生器を備え、前記超音波駆動システムは、導波管に連結された超音波トランスデューサと、前記導波管に連結されたエンドエフェクタとを備え、
前記発生器は、
第1の超音波駆動信号を生成し、
前記超音波トランスデューサを第1の期間にかけて組織の機械的分離を行うため前記第1の超音波駆動信号で作動させ、
第2の超音波駆動信号を前記発生器によって生成し、
前記超音波トランスデューサを前記第1の期間の後に、第2の期間にかけて組織の切断および封着を行うため前記第2の超音波駆動信号で作動させるように構成され、
前記第1の超音波駆動信号の第1の周波数は、前記第1及び第2のそれぞれの期間にかけて、前記第2の超音波駆動信号の第2の周波数と異なり、
前記第1の周波数を含む前記第1の超音波駆動信号及び前記第2の周波数を含む前記第2の超音波駆動信号は、前記第1及び第2の期間にかけて階段関数波形を画定し、
前記超音波駆動システムは共振周波数で共振するように構成されており、前記第1の超音波駆動信号の前記第1の周波数は前記共振周波数と異なり、前記第2の超音波駆動信号の前記第2の周波数は前記共振周波数である、装置。 - 前記第1の超音波駆動信号の第1の周波数、第1の電流、及び、第1の電圧は、前記第1及び第2のそれぞれの期間にかけて、前記第2の超音波駆動信号の第2の周波数、第2の電流、及び、第2の電圧と異なり、
前記第1の周波数、前記第1の電流、及び、前記第1の電圧を含む前記第1の超音波駆動信号及び前記第2の周波数、前記第2の電流、及び、前記第2の電圧を含む前記第2の超音波駆動信号は、前記第1及び第2の期間にかけて階段関数波形を画定する、請求項1に記載の装置。 - 前記超音波駆動システムの測定可能な特性をモニタリングするために測定モジュールを備え、前記発生器が、測定された特性に基づいて前記第1及び第2の駆動信号の任意の1つを生成するように構成される、請求項1に記載の装置。
- 前記測定モジュールが、
前記エンドエフェクタに連結された無線周波数(RF)発生器であって、治療レベル未満のRF信号を生成するように構成されている、無線周波数発生器と、
前記超音波駆動システムの遠位端に連結されたクランプアームアセンブリと、を備え、前記クランプアームアセンブリが、前記RF発生器に連結された帰線電極を形成する導電体部分を備えており、前記クランプアームアセンブリが、間に組織を把持するために前記エンドエフェクタに動作可能に連結されている、請求項3に記載の装置。 - 前記測定モジュールが、
電圧感知モジュールと、
電流感知モジュールと、
前記電圧感知モジュール及び前記電流感知モジュールに連結されたアナログ−デジタル変換器(ADC)と、
前記ADCに連結されたプロセッサと、を備え、前記プロセッサが、インピーダンスを測定するように構成されている、請求項3に記載の装置。 - 手術器具の超音波システムに連結されたエンドエフェクタを駆動するためのシステムであって、
発生器と、
前記発生器に連結された超音波駆動システムを備える超音波器具と、を備え、前記超音波駆動システムは、導波管に連結された超音波トランスデューサと、前記導波管に連結されたエンドエフェクタとを備え、
前記発生器は、
第1の超音波駆動信号を生成し、
前記超音波トランスデューサを第1の期間にかけて組織の機械的分離を行うため前記第1の超音波駆動信号で作動させ、
第2の超音波駆動信号を前記発生器によって生成し、
前記超音波トランスデューサを前記第1の期間の後に、第2の期間にかけて組織の切断および封着を行うため前記第2の超音波駆動信号で作動させるように構成され、
前記第1の超音波駆動信号の第1の周波数は、前記第1及び第2のそれぞれの期間にかけて、前記第2の超音波駆動信号の第2の周波数と異なり、
前記第1の周波数を含む前記第1の超音波駆動信号及び前記第2の周波数を含む前記第2の超音波駆動信号は、前記第1及び第2の期間にかけて階段関数波形を画定し、
前記超音波駆動システムは共振周波数で共振するように構成されており、前記第1の超音波駆動信号の前記第1の周波数は前記共振周波数と異なり、前記第2の超音波駆動信号の前記第2の周波数は前記共振周波数である、システム。 - 前記第1の超音波駆動信号の第1の周波数、第1の電流、及び、第1の電圧は、前記第1及び第2のそれぞれの期間にかけて、前記第2の超音波駆動信号の第2の周波数、第2の電流、及び、第2の電圧と異なり、
前記第1の周波数、前記第1の電流、及び、前記第1の電圧を含む前記第1の超音波駆動信号及び前記第2の周波数、前記第2の電流、及び、前記第2の電圧を含む前記第2の超音波駆動信号は、前記第1及び第2の期間にかけて階段関数波形を画定する、請求項6に記載の装置。 - 前記発生器が前記超音波駆動システムの測定可能な特性をモニタリングするために測定モジュールを備え、前記発生器が、測定された特性に基づいて前記第1及び第2の駆動信号の任意の1つを生成するように構成される、請求項6に記載のシステム。
- 前記測定モジュールが、
前記エンドエフェクタに連結された無線周波数(RF)発生器であって、治療レベル未満のRF信号を生成するように構成されている、無線周波数発生器と、
前記超音波駆動システムの遠位端に連結されたクランプアームアセンブリと、を備え、前記クランプアームアセンブリが、前記RF発生器に連結された帰線電極を形成する導電体部分を備えており、前記クランプアームアセンブリが、間に組織を把持するために前記エンドエフェクタに動作可能に連結されている、請求項7に記載のシステム。 - 前記測定モジュールが、
電圧感知モジュールと、
電流感知モジュールと、
前記電圧感知モジュール及び前記電流感知モジュールに連結されたアナログ−デジタル変換器(ADC)と、
前記ADCに連結されたプロセッサと、を備え、前記プロセッサが、インピーダンスを測定するように構成される、請求項7に記載のシステム。
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US61/188,790 | 2008-08-13 | ||
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EP3260065A2 (en) | 2017-12-27 |
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US8058771B2 (en) | 2011-11-15 |
CN102119005B (zh) | 2014-07-02 |
CA2733066A1 (en) | 2010-02-11 |
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