JP5986717B2 - 組織融合システムおよび機能検証試験の実施方法 - Google Patents
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Description
Claims (16)
- 外科手術において組織への熱手術を行うための熱組織手術システムであって、
エネルギ源と、前記エネルギ源に接続されたハンドピースとを備え、前記ハンドピースは、前記組織への熱手術中に組織を圧縮する1対の対向する第1ジョーと第2ジョーを備えており、前記第1ジョーは電力を前記組織への熱手術中に圧縮された前記組織に印加する熱エネルギーに変換する第1ジョー加熱素子を備えており、前記第2ジョーは電力を前記組織への熱手術中に圧縮された前記組織に印加する熱エネルギーに変換する第2ジョー加熱素子を備えており、前記エネルギ源は前記組織への熱手術中に電圧及び電流を有するヒーター電力信号を前記第1及び第2ジョー加熱素子に供給するものであり、
前記エネルギ源は、
前記第1及び第2ジョー加熱素子への前記ヒーター電力信号の供給を制御するコントローラであって、連続する熱組織手術の合間に始動信号がこないことに応じて、所定のテスト期間の間、前記第1及び第2ジョー加熱素子に試験用ヒーター電力信号を供給する前記コントローラと、
前記第1ジョー加熱素子へ供給された前記試験用ヒーター電力信号の電圧を検出し、前記試験用ヒーター電力信号について検出された電圧に関連する第1電圧センス信号を供給する第1電圧センサと、
前記第1ジョー加熱素子へ供給された前記試験用ヒーター電力信号の電流を検出し、前記試験用ヒーター電力信号について検出された電流に関連する第1電流センス信号を供給する第1電流センサと、
前記第2ジョー加熱素子へ供給された前記試験用ヒーター電力信号の電圧を検出し、前記試験用ヒーター電力信号について検出された電圧に関連する第2電圧センス信号を供給する第2電圧センサと、
前記第2ジョー加熱素子へ供給された前記試験用ヒーター電力信号の電流を検出し、前記試験用ヒーター電力信号について検出された電流に関連する第2電流センス信号を供給する第2電流センサと、
を備えており、
前記熱組織手術システムは、前記始動信号によって前記組織への熱手術が開始されるものであり、
前記コントローラは、前記始動信号に応じて前記組織への熱手術を行うのに十分な電力を有する前記ヒーター電力信号を供給し、
前記コントローラは、前記第1電圧センス信号及び前記第1電流センス信号から前記第1ジョー加熱素子の第1抵抗値を計算するとともに、前記第2電圧センス信号及び前記第2電流センス信号から前記第2ジョー加熱素子の第2抵抗値を計算し、計算された前記第1及び第2抵抗値を期待される抵抗値の所定範囲とそれぞれ比較し、計算された前記第1及び第2抵抗値の少なくとも一方が前記期待される抵抗値の所定範囲から外れる場合に、エラー状態を通知するとともに前記ヒーター電力信号が前記第1及び第2ジョー加熱素子にそれ以上供給されないようにするものであり、
前記第1及び第2ジョー加熱素子のそれぞれには、個別の試験用ヒーター電力信号が供給され、前記試験用ヒーター電力信号は、前記第1及び第2ジョー加熱素子の前記第1及び第2抵抗値を計算するためにそれぞれ用いられ、
前記コントローラは、
前記エネルギ源の一部である制御プロセッサと、
前記ハンドピースの一部であるハンドピースプロセッサと、を備え、
前記熱組織手術システムは、各テスト期間において前記第1及び第2ジョー加熱素子のそれぞれの前記電圧を検出し、検出した前記第1及び第2ジョー加熱素子のそれぞれの前記電圧のピークである第1及び第2ピーク電圧の大きさを示す第1及び第2ピーク電圧信号を前記ハンドピースプロセッサに供給するピーク電圧検出器をさらにを備えており、
前記ハンドピースプロセッサは、前記第1及び第2ジョー加熱素子の前記第1及び第2ピーク電圧信号を判定し、判定した前記第1及び第2ピーク電圧信号を前記制御プロセッサに前記第1および第2電圧センス信号として供給するものであり、
前記ハンドピースプロセッサは、サンプリングされた前記第1及び第2ピーク電圧を前記制御プロセッサに前記第1および第2電圧センス信号として供給する
ことを特徴とする熱組織手術システム。 - 前記コントローラは、複数の連続したテスト期間のそれぞれにおいて前記試験用ヒーター電力信号を供給し、
前記コントローラは、それぞれのテスト期間ごとに前記第1及び第2ジョー加熱素子の前記第1及び第2抵抗値を計算し、計算された前記第1及び第2抵抗値を前記期待される抵抗値の所定範囲とそれぞれ比較し、
前記コントローラは、連続した所定回数のテスト期間のそれぞれにおいて計算された前記第1及び第2抵抗値の少なくとも一方が前記期待される抵抗値の所定範囲から外れる場合に、前記エラー状態を通知するとともに前記ヒーター電力信号が前記第1及び第2ジョー加熱素子にそれ以上供給されないようにする
ことを特徴とする請求項1に記載の熱組織手術システム。 - 前記コントローラは、各テスト期間に含まれる所定回数の連続した制御サイクルのそれぞれにおいて前記試験用ヒーター電力信号を供給し、
前記コントローラは、各テスト期間において、前記連続した制御サイクルのうちの最後の制御サイクルで取得された前記第1電圧センス信号及び前記第1電流センス信号に応じて前記第1ジョー加熱素子の前記第1抵抗値を計算するとともに、前記最後の制御サイクルで取得された前記第2電圧センス信号及び前記第2電流センス信号に応じて前記第2ジョー加熱素子の前記第2抵抗値を計算する
ことを特徴とす請求項2に記載の熱組織手術システム。 - 前記エネルギ源は、電気エネルギーを選択的に伝導して前記ヒーター電力信号を作成し、
前記コントローラは、前記エネルギ源による伝導を伝導時間及び非伝導時間のデューティサイクルで制御することで、伝導時間及び非伝導時間の前記デューティサイクルによって形成される各制御サイクルにおける前記ヒーター電力信号の電力量を規定し、
前記組織への熱手術を行うために用いられる前記ヒーター電力信号は、前記試験用ヒーター電力信号を作成するために用いられるデューティサイクルよりも、比較的大きい伝導時間及び比較的短い非伝導時間のデューティサイクルを有する
ことを特徴とする請求項1〜3のいずれか一項に記載の熱組織手術システム。 - 前記試験用ヒーター電力信号は、複数回の連続した制御サイクルにわたって供給される
ことを特徴とする請求項1〜4のいずれか一項に記載の熱組織手術システム。 - 前記熱組織手術システムは、複数のエネルギ源を備えており、
個別の前記エネルギ源がヒーター電力信号を前記第1及び第2ジョー加熱素子にそれぞれ印加し、
各エネルギ源は、一次巻線および二次巻線を有するトランスを備えており、前記一次巻線は一次交流電流信号を伝導するために接続され、前記二次巻線は前記一次交流電流信号から前記ヒーター電力信号を誘導し、
前記エネルギ源は前記一次交流電流信号を前記トランスの前記一次巻線で生成するための導通スイッチを備えており、
各エネルギ源は、前記導通スイッチに接続されたオシレータを備えており、それぞれのオシレータは前記導通スイッチの導通を制御する信号を供給し、
前記コントローラは前記オシレータに接続され、前記トランスの前記一次巻線における前記一次交流電流信号の伝導を制御し、
前記コントローラは、前記エラー状態に移行する際に、前記オシレータを制御して前記一次交流電流信号の伝導を停止する
ことを特徴とする請求項1〜5のいずれか一項に記載の熱組織手術システム。 - 前記トランスに接続された電源をさらに備え、
前記オシレータは方形波信号を供給し、
前記コントローラは、各オシレータにゲート制御信号をアサートして前記オシレータによる前記方形波信号の供給を制御し、
各オシレータは、前記ゲート制御信号のアサーションの間、前記ゲート制御信号に応じて、前記トランスの前記一次巻線に前記一次交流電流信号を伝導させ、
前記コントローラは、それぞれの制御サイクルにおいて前記ゲート制御信号がアサートされる時間の長さを調整することにより、前記組織への熱手術中の前記ヒーター電力信号の電力量を規定するとともに、各制御サイクルにおける前記試験用ヒーター電力信号の電力量を規定する
ことを特徴とする請求項6に記載の熱組織手術システム。 - 前記ピーク電圧検出器は、サンプル時間の間に検出された前記信号の最大値を検出するとともに保持するものであり、
前記第1及び第2ジョー加熱素子の前記第1及び第2抵抗値のそれぞれの計算は、それぞれのテスト期間の電圧および電流の最大値を用いて行われる
ことを特徴とする請求項1〜7のいずれか一項に記載の熱組織手術システム。 - 電力を生成するエネルギ源と、前記エネルギ源と接続するとともに、組織への熱手術中に組織を圧縮する一対の対向する第1ジョーと第2ジョーであって、前記第1及び第2ジョーは電力を前記組織への熱手術中に圧縮された前記組織に印加する熱エネルギーに変換する第1及び第2ジョー加熱素子をぞれそれ備えるものであるハンドピースとを備える、請求項1に記載の熱組織手術システムの機能検証試験を行う方法であって、
前記熱組織手術システムが組織への熱手術を行っていないときに、前記コントローラが電流と電圧を有する試験用ヒーター電力信号を前記第1及び第2ジョー加熱素子に供給することと、
前記試験用ヒーター電力信号の前記電流と前記電圧を前記第1及び第2電圧センサおよび前記第1及び第2電流センサがそれぞれ検出することと、
前記ピーク電圧検出器によって前記第1及び第2ジョー加熱素子のそれぞれの前記電圧のピークである第1及び第2ピーク電圧の大きさをそれぞれ示す第1及び第2ピーク電圧信号を生成することと、
前記第1及び第2ピーク電圧信号から前記第1及び第2ジョー加熱素子の前記第1及び第2抵抗値をそれぞれ前記コントローラが計算することと、
計算された前記第1及び第2抵抗値を、前記コントローラが前記第1及び第2ジョー加熱素子の正常な特性を表わす、期待される抵抗値の範囲とそれぞれ比較することと、
計算された前記第1及び第2抵抗値の少なくとも一方が、前記期待される抵抗値の範囲から外れる場合に、前記コントローラがエラーメッセージを送信することと、
を含むことを特徴とする、方法。 - 前記試験用ヒーター電力信号は、組織への熱手術を行うために前記ヒーター電力信号に供給される電力量と比して、小さい電力量で供給されることを特徴とする
請求項9に記載の方法。 - 連続した組織への熱手術の合間に発生するテスト期間の間は、前記検出、計算、比較および通知動作を継続的に繰り返すことを特徴とする
請求項9又は10に記載の方法。 - 複数の連続したテスト期間のそれぞれにおいて前記試験用ヒーター電力信号を供給し、
前記テスト期間のそれぞれにおいて、前記第1及び第2ジョー加熱素子の前記第1及び第2抵抗値を計算し、計算された前記第1及び第2抵抗値を前記期待される抵抗値の所定範囲と比較し、
計算された前記第1及び第2抵抗値が、連続した所定回数のテスト期間のそれぞれにおいて前記期待される抵抗値の所定範囲から外れる場合に、エラー状態を通知するとともに前記ヒーター電力信号が前記第1及び第2ジョー加熱素子にそれ以上供給されないようにすることを特徴とする
請求項11に記載の方法。 - 各テスト期間中の所定回数の連続した制御サイクルのそれぞれにおいて、前記試験用ヒーター電力信号を供給し、
各テスト期間中の前記連続した制御サイクルのうち、最後の制御サイクルで得られた電圧と電流の値から前記前記第1及び第2ジョー加熱素子の前記第1及び第2抵抗値を計算することを特徴とする
請求項11又は12に記載の方法。 - 計算された前記第1及び第2抵抗値の少なくとも一方が前記期待される抵抗値の所定範囲から外れる場合に、前記エラー状態を通知するとともに前記ヒーター電力信号が両方のジョー加熱素子にそれ以上供給されないようにすること
を、前記コントローラが実行することを特徴とする
請求項9〜13のいずれか一項に記載の方法。 - 各制御サイクルにおいて前記ヒーター電力信号を前記第1及び第2ジョー加熱素子に選択的に伝導させることと、
各制御サイクルにおける前記ヒーター電力信号の電力量を、各制御サイクルの伝導時間および非伝導時間のデューティサイクルによって規定することと、
前記試験用ヒーター電力信号の比較的小さいデューティサイクルに比して比較的大きいデューティサイクルを有する熱組織手術用のヒーター電力信号を用いること
を特徴とする
請求項9〜14のいずれか一項に記載の方法。 - 各制御サイクルにおける前記第1及び第2ジョー加熱素子の電圧のピークの大きさを表わす前記第1及び第2ピーク電圧信号を供給することと、
各制御サイクルにおいて前記第1及び第2ジョー加熱素子によって伝導される電流のピークの大きさを表わす第1及び第2ピーク電流信号を供給することと、
前記第1及び第2ピーク電圧信号および前記第1及び第2ピーク電流信号から前記第1及び第2ジョー加熱素子の前記第1及び第2抵抗値を計算すること
を特徴とする
請求項9〜15のいずれか一項に記載の方法。
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US12/842,659 | 2010-07-23 |
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2011
- 2011-06-15 EP EP11170058A patent/EP2415416A1/en not_active Withdrawn
- 2011-06-15 AU AU2011202872A patent/AU2011202872A1/en not_active Abandoned
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- 2011-07-21 JP JP2011160058A patent/JP5986717B2/ja not_active Expired - Fee Related
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CA2744462C (en) | 2016-08-09 |
EP2415416A1 (en) | 2012-02-08 |
US8840609B2 (en) | 2014-09-23 |
CA2744462A1 (en) | 2012-01-23 |
JP2012024583A (ja) | 2012-02-09 |
US20120022517A1 (en) | 2012-01-26 |
AU2011202872A1 (en) | 2012-02-09 |
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