JP2010535088A - 変調器を備えた超音波手術器具 - Google Patents
変調器を備えた超音波手術器具 Download PDFInfo
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Abstract
Description
中空コアの器具及び中実コアの器具の両方を含む超音波器具は、多くの病状の安全かつ効率的な治療のために使用されている。超音波器具、特に中実コアの超音波器具は、超音波周波数で外科用エンドエフェクターに伝送される機械的振動の形態のエネルギーを使用して、組織を切断及び/又は凝結するのに使用することができるという理由で有利である。好適なエンドエフェクターを用いて好適なエネルギー量で有機組織に伝送される超音波振動は、組織を切断し、切開し、隆起させ、若しくは凝固させるか、又は筋肉組織を骨片から分離するのに使用することができる。中実コア技術の超音波器具は、超音波伝送導波路を介して超音波変換器から外科用エンドエフェクターに伝送することができる超音波エネルギーの量により、特に有利である。そのような器具は、内視鏡的若しくは腹腔鏡的処置など、エンドエフェクターがトロカールを通過して手術部位に到達する、開放型の処置又は低侵襲性処置に使用することができる。
d=A sin(ωt)
式中、
ωは、周期的な周波数fの2π倍に等しい角振動数であり、
Aは、ゼロからピークまでの振幅である。
長手方向可動域は、ピークからピークまでの(p−t−p)振幅として規定され、正弦波の振幅のちょうど2倍、即ち2Aである。
〔発明が解決しようとする課題〕
エンドエフェクターの、より具体的にはブレードの遠位端は、組織を切り開くか、又は凝固させると、流体と接触する。流体は、潅注流体、血液、組織粒子、及び/又はそれらの任意の組み合わせを含んでもよい。超音波作動式のエンドエフェクターの遠位端が流体に接触すると、流体粒子の発散する水柱の形態の微細な霧が、エンドエフェクターの遠位端から放散することがある。この霧の水柱は、一般に、手術部位の可視性を妨げることがあるので望ましくない。エンドエフェクターが超音波周波数のエネルギーで始動されたとき、その遠位端から放散する霧状の水柱が低減される、超音波器具を提供することが望ましい。
一実施形態では、外科用器具は、所定の周波数で長手方向軸線に沿って振動を生み出すように構成された変換器を備える。エンドエフェクターは、変換器に連結し、長手方向軸線に沿って延びるように適合される。エンドエフェクターは、近位端及び遠位端を有する本体を備える。遠位端は、変換器によって生み出される振動によって、長手方向軸線に対して移動可能である。駆動モジュールは、変換器に連結されて、変調駆動信号を発生する。エンドエフェクターの遠位端は、変調駆動信号に応答して変換器によって生み出される振動に応答して移動可能である。
(1) 外科用器具において、
所定周波数で長手方向軸線に沿って振動を生み出すように構成された変換器と、
前記長手方向軸線に沿って延びる前記変換器に連結するように適合されたエンドエフェクターであって、近位端と、前記変換器によって生み出される前記振動によって前記長手方向軸線に対して移動可能である遠位端と、を有する本体を備える、エンドエフェクターと、
前記変換器に連結されて、変調駆動信号を発生させる駆動モジュールと、を備え、
前記エンドエフェクターの前記遠位端が、前記変調駆動信号に応答して前記変換器によって生み出される前記振動に応答して移動可能である、外科用器具。
(2) 実施態様1に記載の外科用器具であって、前記駆動モジュールが、
電流セットポイント信号を受信する第1の入力及び変調波形を受信する第2の入力を備える、変調信号を発生する変調器と、
前記変調器に連結されて、前記変調信号を受信し、かつ前記変換器に連結された前記変調駆動信号を制御する電流制御ループと、を備える、外科用器具。
(3) 前記変調波形が、
変調振幅(Am)成分及び変調周波数(fm)成分を含む、時間とともに変動する信号であり、
前記変調波形が、次の関係:
(4) 前記変調波形が、時間とともに変動する変調振幅(Am)成分を含む、実施態様3に記載の外科用器具。
(5) 前記変調波形が、時間とともに変動する変調周波数(fm)成分を含む、実施態様3に記載の外科用器具。
(6) 前記変調波形が、時間とともに変動する変調振幅(Am)成分及び時間とともに変動する変調周波数(fm)成分を含む、実施態様3に記載の外科用器具。
(7) 前記変調駆動信号に応答して、前記エンドエフェクターの前記遠位端に接触している流体液滴粒子に対して前記変調駆動信号に比例する放射圧を付与するように、前記エンドエフェクターの前記遠位端が適合された、実施態様1に記載の外科用器具。
(8) 前記駆動モジュールが、
相対位相信号を受信する第1の入力及び位相変調波形を受信する第2の入力を備える加算器を備え、前記加算器は位相変調信号を発生させ、
前記変調波形は、
位相変調(φm)成分及び変調周波数(fmφ)成分を含む、位相とともに変動する信号であり、
前記変調波形は、次の関係:
(9) 実施態様1に記載の外科用器具を得ることと、
前記外科用器具を滅菌することと、
前記外科用器具を滅菌容器に格納することと、を含む、方法。
(10) 超音波信号発生器であって、
変換器に連結する変調駆動信号を発生する駆動モジュールを備え、前記変換器が、前記変調駆動信号に応答して前記変換器によって生み出される振動に応答して移動可能な遠位端を有するエンドエフェクターに連結される、超音波信号発生器。
電流セットポイント信号を受信する第1の入力、及び変調波形を受信し変調信号を発生させる第2の入力を備える変調器と、
前記変調器に連結されて、前記変調信号を受信し、前記変換器に連結された前記変調駆動信号を制御する電流制御ループと、を備える、実施態様10に記載の超音波発生器。
(12) 前記変調波形が、
変調振幅(Am)成分と、変調周波数(fm)成分と、を含む、時間とともに変動する信号であり、
前記変調波形が、次の関係:
(13) 前記変調波形が、時間とともに変動する変調振幅(Am)成分を含む、実施態様12に記載の超音波発生器。
(14) 前記変調波形が、時間とともに変動する変調周波数(fm)成分を含む、実施態様12に記載の超音波発生器。
(15) 前記変調波形が、時間とともに変動する変調振幅(Am)成分、及び時間とともに変動する変調周波数(fm)成分を含む、実施態様12に記載の超音波発生器。
(16) 前記変調駆動信号に応答して、前記エンドエフェクターの前記遠位端が、前記エンドエフェクターの前記遠位端に接触している流体液滴粒子に対して前記変調駆動信号に比例する放射圧を付与するように適合された、実施態様10に記載の超音波発生器。
(17) 前記駆動モジュールが、
相対位相信号を受信する第1の入力及び位相変調波形を受信する第2の入力を備える加算器を備え、前記加算器は、位相変調信号を発生させ、
前記変調波形は、
位相変調(φm)成分及び変調周波数(fmφ)成分、を含む、位相とともに変動する信号であり、
前記変調波形は、次の関係:
(18) 駆動モジュールを用いて変調駆動信号を発生させることと、
遠位端を有するエンドエフェクターに連結された変換器に、前記変調駆動信号を連結することと、を含み、
前記遠位端が、前記変調駆動信号に応答して前記変換器によって生み出される振動に応答して移動可能である、方法。
(19) 変調器の第1の入力において電流セットポイント信号を受信することと、
前記変調器の第2の入力において変調波形を受信することと、
前記変調波形を用いて前記電流セットポイント信号を変調することによって変調信号を発生させることと、
前記変調信号を電流制御ループと連結して、前記変換器に連結された前記変調駆動信号を制御することと、を含む、実施態様18に記載の方法。
(20) 変調振幅(Am)成分及び変調周波数(fm)成分を含む変調波形を受信することを含み、前記変調波形が、次の関係:
(22) 時間とともに変動する変調周波数(fm)成分を含む変調波形を受信することを含む、実施態様19に記載の方法。
(23) 時間とともに変動する変調振幅(Am)成分及び時間とともに変動する変調周波数(fm)成分を含む変調波形を受信することを含む、実施態様19に記載の方法。
(24) 前記変調駆動信号に応答して、前記エンドエフェクターの前記遠位端に接触している流体液滴粒子に対して前記変調駆動信号に比例する放射圧を付与することを含む、実施態様18に記載の方法。
Claims (24)
- 外科用器具において、
所定周波数で長手方向軸線に沿って振動を生み出すように構成された変換器と、
前記長手方向軸線に沿って延びる前記変換器に連結するように適合されたエンドエフェクターであって、近位端と、前記変換器によって生み出される前記振動によって前記長手方向軸線に対して移動可能である遠位端と、を有する本体を備える、エンドエフェクターと、
前記変換器に連結されて、変調駆動信号を発生させる駆動モジュールと、を備え、
前記エンドエフェクターの前記遠位端が、前記変調駆動信号に応答して前記変換器によって生み出される前記振動に応答して移動可能である、外科用器具。 - 請求項1に記載の外科用器具であって、前記駆動モジュールが、
電流セットポイント信号を受信する第1の入力及び変調波形を受信する第2の入力を備える、変調信号を発生する変調器と、
前記変調器に連結されて、前記変調信号を受信し、かつ前記変換器に連結された前記変調駆動信号を制御する電流制御ループと、を備える、外科用器具。 - 前記変調波形が、時間とともに変動する変調振幅(Am)成分を含む、請求項3に記載の外科用器具。
- 前記変調波形が、時間とともに変動する変調周波数(fm)成分を含む、請求項3に記載の外科用器具。
- 前記変調波形が、時間とともに変動する変調振幅(Am)成分及び時間とともに変動する変調周波数(fm)成分を含む、請求項3に記載の外科用器具。
- 前記変調駆動信号に応答して、前記エンドエフェクターの前記遠位端に接触している流体液滴粒子に対して前記変調駆動信号に比例する放射圧を付与するように、前記エンドエフェクターの前記遠位端が適合された、請求項1に記載の外科用器具。
- 請求項1に記載の外科用器具を得ることと、
前記外科用器具を滅菌することと、
前記外科用器具を滅菌容器に格納することと、を含む、方法。 - 超音波信号発生器であって、
変換器に連結する変調駆動信号を発生する駆動モジュールを備え、前記変換器が、前記変調駆動信号に応答して前記変換器によって生み出される振動に応答して移動可能な遠位端を有するエンドエフェクターに連結される、超音波信号発生器。 - 前記駆動モジュールが、
電流セットポイント信号を受信する第1の入力、及び変調波形を受信し変調信号を発生させる第2の入力を備える変調器と、
前記変調器に連結されて、前記変調信号を受信し、前記変換器に連結された前記変調駆動信号を制御する電流制御ループと、を備える、請求項10に記載の超音波発生器。 - 前記変調波形が、時間とともに変動する変調振幅(Am)成分を含む、請求項12に記載の超音波発生器。
- 前記変調波形が、時間とともに変動する変調周波数(fm)成分を含む、請求項12に記載の超音波発生器。
- 前記変調波形が、時間とともに変動する変調振幅(Am)成分、及び時間とともに変動する変調周波数(fm)成分を含む、請求項12に記載の超音波発生器。
- 前記変調駆動信号に応答して、前記エンドエフェクターの前記遠位端が、前記エンドエフェクターの前記遠位端に接触している流体液滴粒子に対して前記変調駆動信号に比例する放射圧を付与するように適合された、請求項10に記載の超音波発生器。
- 駆動モジュールを用いて変調駆動信号を発生させることと、
遠位端を有するエンドエフェクターに連結された変換器に、前記変調駆動信号を連結することと、を含み、
前記遠位端が、前記変調駆動信号に応答して前記変換器によって生み出される振動に応答して移動可能である、方法。 - 変調器の第1の入力において電流セットポイント信号を受信することと、
前記変調器の第2の入力において変調波形を受信することと、
前記変調波形を用いて前記電流セットポイント信号を変調することによって変調信号を発生させることと、
前記変調信号を電流制御ループと連結して、前記変換器に連結された前記変調駆動信号を制御することと、を含む、請求項18に記載の方法。 - 時間とともに変動する変調振幅(Am)成分を含む変調波形を受信することを含む、請求項19に記載の方法。
- 時間とともに変動する変調周波数(fm)成分を含む変調波形を受信することを含む、請求項19に記載の方法。
- 時間とともに変動する変調振幅(Am)成分及び時間とともに変動する変調周波数(fm)成分を含む変調波形を受信することを含む、請求項19に記載の方法。
- 前記変調駆動信号に応答して、前記エンドエフェクターの前記遠位端に接触している流体液滴粒子に対して前記変調駆動信号に比例する放射圧を付与することを含む、請求項18に記載の方法。
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JP7169259B2 (ja) | 2014-08-07 | 2022-11-10 | ストライカー・コーポレイション | 複数のモードで振動可能な超音波式手術用ツール及びツール先端部の非線形振動をもたらす駆動システム |
JP2023029830A (ja) * | 2014-08-07 | 2023-03-07 | ストライカー・コーポレイション | 複数のモードで振動可能な超音波式手術用ツール及びツール先端部の非線形振動をもたらす駆動システム |
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US20090036911A1 (en) | 2009-02-05 |
JP5687058B2 (ja) | 2015-03-18 |
WO2009032439A1 (en) | 2009-03-12 |
US20120323265A1 (en) | 2012-12-20 |
US8709031B2 (en) | 2014-04-29 |
US8252012B2 (en) | 2012-08-28 |
CN101772326B (zh) | 2012-11-14 |
CN101772326A (zh) | 2010-07-07 |
EP2190362B1 (en) | 2017-09-13 |
EP2190362A1 (en) | 2010-06-02 |
CA2694954A1 (en) | 2009-03-12 |
AU2008296695A1 (en) | 2009-03-12 |
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