JP2013255798A - 周波数応答のモニタリングからの超音波ディセクターの温度推定および組織検出 - Google Patents
周波数応答のモニタリングからの超音波ディセクターの温度推定および組織検出 Download PDFInfo
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Abstract
【解決手段】超音波外科装置および方法であって、上記装置は、周波数を有する駆動信号を出力する信号発生器1002と、駆動信号を受け取り、駆動信号の周波数で発振する発振構造1018と、発振構造の機械的運動を検出し、機械的運動を表す信号を出力するブリッジ回路1008とを含む、超音波外科装置および方法を提供する。超音波外科装置はまた、ブリッジ回路によって出力される信号を受け取るマイクロコントローラー1004を含み、マイクロコントローラーは、受け取った信号に基づいて発振構造が発振している瞬間周波数を決定し、発振構造がその共振周波数において発振することを維持するために必要である周波数調整を決定し、マイクロコントローラーは、ブリッジ回路から受け取った信号の質(Q値)をさらに決定し、発振構造に接触している材料のタイプを決定する。
【選択図】図10
Description
1. 技術分野
本開示は、一般に、超音波外科機器に関し、より具体的には、超音波外科機器の温度を推定すること、および超音波外科機器によって係合される組織のタイプを区別することに関する。
超音波機器は、多くの医学的状態の処置(例えば、組織の除去、ならびに管の焼灼および密閉)において有効に使用される。超音波を利用する切断機器は、超音波変換器を用いて切断刃の長手方向の軸に沿って振動を発生させる。刃の長さに沿って共振波を配置することによって、高速な長手方向の機械的移動は、刃の末端において生み出される。これらの機器は、刃の末端に伝えられる機械的振動が、器官組織を切断し、同時に、超音波周波数によって生み出される熱エネルギーを用いて組織を凝結させる(coagulate)ことにおいて非常に有効であるので有利である。そのような機器は、刃がトロカールを通って外科部位に達する最小限に侵襲性の手順(例えば、内視鏡または腹腔鏡手順)における使用に特によく適している。
本開示の1つの局面は、超音波外科装置に関し、超音波外科装置は、周波数を有する駆動信号を出力する信号発生器と、駆動信号を受け取り、駆動信号の周波数で発振する発振構造と、発振構造の機械的運動を検出し、機械的運動を表す信号を出力するブリッジ回路とを含む。超音波外科装置はまた、ブリッジ回路によって出力される信号を受け取るマイクロコントローラーを含み、マイクロコントローラーは、受け取った信号に基づいて発振構造が発振している瞬間周波数を決定し、発振構造がその共振周波数において発振することを維持するために必要である周波数調整を決定し、マイクロコントローラーは、ブリッジ回路から受け取った信号の質(Q値)をさらに決定し、発振構造に接触している材料のタイプを決定する。
(項目1)
超音波外科装置であって、該超音波外科装置は、
周波数を有する駆動信号を出力する信号発生器と、
該駆動信号を受け取り、該駆動信号の周波数で発振する発振構造と、
該発振構造の機械的運動を検出し、該機械的運動を表す信号を出力するブリッジ回路と
該ブリッジ回路によって出力される信号を受け取るマイクロコントローラーであって、該マイクロコントローラーは、受け取った信号に基づいて該発振構造が発振している瞬間周波数を決定し、該発振構造がその共振周波数において発振することを維持するために必要である周波数調整を決定し、該マイクロコントローラーは、該ブリッジ回路から受け取った信号の質(Q値)をさらに決定し、該発振構造に接触している材料のタイプを決定する、マイクロコントローラーと
を含む、超音波外科装置。
(項目2)
前記決定されたQ値は、上記発振構造と接触している上記材料を決定するために、メモリーに保存されているQ値と比較される、上記項目に記載の装置。
(項目3)
メモリーに保存されている上記Q値は、濡れた組織、乾燥した組織、高密度の組織、骨、および金属物からなる群から選択される材料タイプを区別する、上記項目のうちのいずれか1項に記載の装置。
(項目4)
上記決定されたQ値は、上記発振構造の末端におけるエンドエフェクターによって上記材料に適用されるクランプ圧を考慮する、上記項目のうちのいずれか1項に記載の装置。
(項目5)
特定のQ値を検出すると、上記超音波外科装置は、該超音波外科装置の刃部分が上記発振構造のエンドエフェクターと接触していることを決定する、上記項目のうちのいずれか1項に記載の装置。
(項目6)
超音波外科装置が接触している材料のタイプを決定する方法であって、該方法は、
駆動信号を発生させ、該駆動信号を発振構造に供給することと、該発振構造の機械的運動を検出し、該機械的運動を表す信号を発生させることと、
該機械的運動を表す該信号を処理し、受け取った信号に基づいて上記発振構造が発振している瞬間周波数を決定することと、
必要とされる周波数調整をし、該発振構造がその共振周波数において発振することを維持することと、
上記ブリッジ回路から受け取った信号の質(Q値)を決定し、該発振構造に接触している材料を識別することと
を含む、方法。
(項目7)
上記決定されたQ値は、上記発振構造と接触している上記材料を決定するために、メモリーに保存されているQ値と比較される、上記項目のうちのいずれか1項に記載の方法。
(項目8)
メモリーに保存されている上記Q値は、濡れた組織、乾燥した組織、高密度の組織、骨、および金属物からなる群から選択される材料タイプを区別する、上記項目のうちのいずれか1項に記載の方法。
(項目9)
上記決定されたQ値は、上記発振構造の末端におけるエンドエフェクターによって上記材料に適用されるクランプ圧を考慮する、上記項目のうちのいずれか1項に記載の方法。
(項目10)
特定のQ値を検出すると、上記超音波外科装置は、該超音波外科装置の刃部分が該超音波外科装置の上記エンドエフェクターと接触していることを決定する、上記項目のうちのいずれか1項に記載の方法。
超音波外科装置および方法であって、上記装置は、周波数を有する駆動信号を出力する信号発生器と、駆動信号を受け取り、駆動信号の周波数で発振する発振構造と、発振構造の機械的運動を検出し、機械的運動を表す信号を出力するブリッジ回路とを含む。超音波外科装置はまた、ブリッジ回路によって出力される信号を受け取るマイクロコントローラーを含み、マイクロコントローラーは、受け取った信号に基づいて発振構造が発振している瞬間周波数を決定し、発振構造がその共振周波数において発振することを維持するために必要である周波数調整を決定し、マイクロコントローラーは、ブリッジ回路から受け取った信号の質(Q値)をさらに決定し、発振構造に接触している材料のタイプを決定する。
本開示の特定の実施形態は、添付の図面を参照して、本明細書において以下に記載される。以下の記載において、周知の機能または構築は、本開示を不必要な詳細で不明瞭にすることを避けるために詳細に記載されない。
変換器316に適用され、導波管320に沿って移動する駆動信号が、超音波外科機器のための共振周波数においてではない場合、最後の腹は、導波管320の刃318において出現しない。そのような場合、導波管320の刃318は、導波管320の長手方向の軸に対して横方向に移動し得る。刃318のオフ共振運動(off resonant motion)は一般に望ましくないが、特定の適用において、そのようなオフ共振運動は、特定の期間、特定の外科成果を達成するために望ましい場合がある。
iM=iT−r*iB
をもたらす。
Claims (10)
- 超音波外科装置であって、該超音波外科装置は、
周波数を有する駆動信号を出力する信号発生器と、
該駆動信号を受け取り、該駆動信号の周波数で発振する発振構造と、
該発振構造の機械的運動を検出し、該機械的運動を表す信号を出力するブリッジ回路と
該ブリッジ回路によって出力される信号を受け取るマイクロコントローラーであって、該マイクロコントローラーは、受け取った信号に基づいて該発振構造が発振している瞬間周波数を決定し、該発振構造がその共振周波数において発振することを維持するために必要である周波数調整を決定し、該マイクロコントローラーは、該ブリッジ回路から受け取った信号の質(Q値)をさらに決定し、該発振構造に接触している材料のタイプを決定する、マイクロコントローラーと
を含む、超音波外科装置。 - 前記決定されたQ値は、前記発振構造と接触している前記材料を決定するために、メモリーに保存されているQ値と比較される、請求項1に記載の装置。
- メモリーに保存されている前記Q値は、濡れた組織、乾燥した組織、高密度の組織、骨、および金属物からなる群から選択される材料タイプを区別する、請求項2に記載の装置。
- 前記決定されたQ値は、前記発振構造の末端におけるエンドエフェクターによって前記材料に適用されるクランプ圧を考慮する、請求項2に記載の装置。
- 特定のQ値を検出すると、前記超音波外科装置は、該超音波外科装置の刃部分が前記発振構造のエンドエフェクターと接触していることを決定する、請求項2に記載の装置。
- 超音波外科装置が接触している材料のタイプを決定する方法であって、該方法は、
駆動信号を発生させ、該駆動信号を発振構造に供給することと、該発振構造の機械的運動を検出し、該機械的運動を表す信号を発生させることと、
該機械的運動を表す該信号を処理し、受け取った信号に基づいて前記発振構造が発振している瞬間周波数を決定することと、
必要とされる周波数調整をし、該発振構造がその共振周波数において発振することを維持することと、
前記ブリッジ回路から受け取った信号の質(Q値)を決定し、該発振構造に接触している材料を識別することと
を含む、方法。 - 前記決定されたQ値は、前記発振構造と接触している前記材料を決定するために、メモリーに保存されているQ値と比較される、請求項6に記載の方法。
- メモリーに保存されている前記Q値は、濡れた組織、乾燥した組織、高密度の組織、骨、および金属物からなる群から選択される材料タイプを区別する、請求項7に記載の方法。
- 前記決定されたQ値は、前記発振構造の末端におけるエンドエフェクターによって前記材料に適用されるクランプ圧を考慮する、請求項6に記載の方法。
- 特定のQ値を検出すると、前記超音波外科装置は、該超音波外科装置の刃部分が該超音波外科装置の前記エンドエフェクターと接触していることを決定する、請求項7に記載の方法。
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AU2013205878B2 (en) | 2017-05-25 |
JP2017192743A (ja) | 2017-10-26 |
EP2674118A2 (en) | 2013-12-18 |
EP2674118B1 (en) | 2021-08-25 |
US10677764B2 (en) | 2020-06-09 |
US20200132638A1 (en) | 2020-04-30 |
US10955387B2 (en) | 2021-03-23 |
JP6196816B2 (ja) | 2017-09-13 |
CA2816208A1 (en) | 2013-12-11 |
US20130331874A1 (en) | 2013-12-12 |
AU2013205878A1 (en) | 2014-01-09 |
EP2674118A3 (en) | 2014-03-19 |
CN203483460U (zh) | 2014-03-19 |
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