JP7457016B2 - 電気手術システム - Google Patents
電気手術システム Download PDFInfo
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Description
この出願は、引用により本明細書にその全体が組み込まれている2018年11月16日出願の「電気手術システム」という名称の米国仮特許出願第62/768,782号に対する優先権及びその利益を主張するものである。
72 供給されたRFエネルギの電圧を設定する段階
74 二重封止条件が存在するか否かを決定する段階
75 RF出力の電圧を下げるように変更又は調節する段階
76 RFエネルギをランプ方式で供給し続けながら保持条件をモニタ、決定、又は識別する段階
Claims (30)
- 組織を溶解又は封止するための電気手術発生器であって、
前記電気手術発生器に接続された電気手術器具にRFエネルギを提供するように構成されたRF増幅器と、
コントローラを含み、
前記コントローラは、
組織の区域に第1の予め決められた量のRFエネルギを印加するように前記RF増幅器に命令し、
前記第1の予め決められた量のRFエネルギによって影響された組織の前記区域の乾燥レベルを決定し、
前記決定された乾燥レベルに基づいて組織の前記区域に印加されている前記第1の予め決められた量のRFエネルギを第2の量のRFエネルギまで低減するように前記RF増幅器に命令し、
組織の前記区域に印加されているRFエネルギの前記第2の量を前記RFエネルギの第3の量まで増大するように前記RF増幅器に命令し、印加されているRFエネルギの増加量のランプ速度と組織の該区域に印加される前記第3の量のRFエネルギとが、前記決定された乾燥レベルに基づいており、かつ、組織の前記区域に印可されているRFエネルギの前記第3の量が、前記第1の量のRFエネルギと該第2の量のRFエネルギとの間であり、
組織の前記区域に印加されている前記第3の量のRFエネルギを第1の所定の期間にわたり維持するように前記RF増幅器に命令し、かつ
第1の予め決められた期間が経過した後で組織の前記区域への前記RFエネルギの前記第3の量の印加を終了するように前記RF増幅器に命令する、
ことを特徴とする電気手術発生器。 - 前記電気手術器具は、スクリプトを格納するメモリを含み、
前記スクリプトは、前記電気手術器具の前記メモリから前記コントローラにダウンロードされ、
前記スクリプトは、前記電気手術器具に対する予め定められた量のRFエネルギを発生するように電気手術発生器を構成する命令を含む、
ことを特徴とする請求項1に記載の電気手術発生器。 - ユーザ入力を受信するユーザインタフェースを更に含み、
前記ユーザ入力に基づく量のRFエネルギを発生するように電気手術発生器に命令する命令が発生される、
ことを特徴とする請求項1に記載の電気手術発生器。 - 前記RF増幅器によって発生され、組織の前記区域に印可される前記第1の予め決められた量のRFエネルギ、前記第2の量のRFエネルギ、及び前記第3の量のRFエネルギは、電気手術発生器に接続された電気手術器具のタイプに基づいていることを特徴とする請求項1に記載の電気手術発生器。
- 前記RF増幅器によって発生され、組織の前記区域に印可される前記第1の予め決められた量のRFエネルギ、前記第2の量のRFエネルギ、及び前記第3の量のRFエネルギは、実行されている関連の外科手順に基づいていることを特徴とする請求項1に記載の電気手術発生器。
- 前記RF増幅器によって発生され、組織の前記区域に印可される前記第1の予め決められた量のRFエネルギ、前記第2の量のRFエネルギ、及び前記第3の量のRFエネルギは、受信されたユーザプリファレンスに基づいており、
前記受信されたユーザプリファレンスは、電気手術発生器に関連付けられたユーザ入力を通じて得られる、
ことを特徴とする請求項1に記載の電気手術発生器。 - 前記コントローラによる前記組織の区域の乾燥レベルの決定が、前記組織の区域に印加されている前記RFエネルギの電流ピーク条件を識別することを含む、ことを特徴とする請求項1に記載の電気手術発生器。
- 前記コントローラによる前記組織の区域の乾燥レベルの決定が、前記組織の区域に印加されている前記RFエネルギの電流ピーク条件が予め定められた閾値よりも低いことを識別することをさらに含む、ことを特徴とする請求項7に記載の電気手術発生器。
- 前記予め定められた閾値は、二重封止条件に対応することを特徴とする、ことを特徴とする請求項8に記載の電気手術発生器。
- 前記電流ピーク条件を識別することは、
組織の前記区域に印加することができる電圧又は電流に対する最大量又は窓の百分率に基づく中断値を確立することと、
現在の電圧又は電流測定値が前記中断値よりも高いことを検出することと、
を含む、
ことを特徴とする請求項8に記載の電気手術発生器。 - 組織の前記区域に印加されている前記第1の量のRFエネルギと前記第2の量のRFエネルギとの差が、前記中断値を確立する際に使用された電圧又は電流に対する最大量又は窓の百分率に基づいていることを特徴とする請求項10に記載の電気手術発生器。
- 前記中断値を確立する際に関連付けられたより高い百分率に対する前記量は、該中断値を確立する段階に関連付けられたより低い百分率に対応する異なる量よりも高いことを特徴とする請求項11に記載の電気手術発生器。
- 前記コントローラによる前記コントローラによる前記電流ピーク条件を前記識別することは、
組織の前記区域に印加されている前記RFエネルギの前記電流及び/又は電力の変化率をモニタすることと、
前記モニタされた変化率を前記電流ピーク条件が発生間近である又は発生しそうであるという識別に対応する予め決められた閾値と比較する段階と、
を含む、ことを特徴とする請求項10に記載の電気手術発生器。 - 前記コントローラによる前記電流ピーク条件を前記識別することは、
組織の前記区域に印加されている前記RFエネルギに関連付けられた電流を調整することと、
予め決められた閾値電圧よりも高い電圧の増加を検出することと、
前記予め定められた閾値電圧よりも高い前記電圧の増加のタイミングを前記電流ピーク条件と関連付けることと、
を含む、ことを特徴とする請求項10に記載の電気手術発生器。 - 組織の前記区域の前記乾燥レベルを前記決定する段階は、封止サイクル中の水分蒸発の量を識別する段階を含むことを特徴とする請求項1に記載の電気手術発生器。
- 水分蒸発の前記量は、水蒸気の排出を検知することにより識別されることを特徴とする請求項15に記載の電気手術発生器。
- 前記第1の予め決められた量のRFエネルギから前記第2の量のRFエネルギへの減少は、組織の前記区域に印加することができるRFエネルギの予想最大量に関連付けられた百分率に基づいていることを特徴とする請求項1に記載の電気手術発生器。
- 前記第2の量のRFエネルギは、事前設定値であることを特徴とする請求項1に記載の電気手術発生器。
- 前記乾燥レベルを前記決定することは、組織の前記区域が既に溶解又は封止されている状況を識別することを含むことを特徴とする請求項1に記載の電気手術発生器。
- 前記乾燥レベルを前記決定することは、組織の前記区域の厚みを識別することを含むことを特徴とする請求項1に記載の電気手術発生器。
- 前記乾燥レベルを前記決定することは、組織の前記区域の容積を識別することを含むことを特徴とする請求項1に記載の電気手術発生器。
- 組織の前記区域に印加される前記第1の予め決められた量のRFエネルギは、前記第2の予め決められた期間にわたる該RFエネルギの電圧の予め決められた増加に対応する予め決められた傾斜電圧プロファイルを有することを特徴とする請求項1に記載の電気手術発生器。
- 前記第2の予め決められた期間は、組織の前記区域の表面積に基づいていることを特徴とする請求項22に記載の電気手術発生器。
- 前記第2の予め決められた期間は最大時間閾値を含み、前記コントローラは、前記最大時間閾値に到達すると前記RFエネルギの電圧の前記増加を終了させるように前記RF増幅器に指示するように構成されていることを特徴とする請求項22に記載の電気手術発生器。
- 前記第1の予め決められた期間は、組織の該区域の特性に基づいていることを特徴とする請求項1に記載の電気手術発生器。
- 組織の前記区域の前記特性は、組織の該区域の厚み又は容積を含むことを特徴とする請求項25に記載の電気手術発生器。
- 組織の前記区域に印加される前記第1の予め決められた量のRFエネルギは、組織の該区域を100℃の予め決められた温度まで加熱して乾燥を実行することを特徴とする請求項1に記載の電気手術発生器。
- 組織の前記区域に印加される前記第3の量のRFエネルギは、継続する乾燥に十分な組織の該区域の温度を維持するように構成されていることを特徴とする請求項1に記載の電気手術発生器。
- 前記コントローラは、
前記RFエネルギの量が前記第2の量から増加する時に該RFエネルギの位相及び電流をモニタすることと、
前記電流が降下する時及び前記位相が容量性になる時を検出することと、
前記検出された電流降下及び容量性位相がいつ発生するかに基づいて前記第3の量を識別することと、
に基づいて前記RF増幅器に組織の前記区域に印可されているRFエネルギの前記量を前記第2の量から前記第3の量まで増大するように指示する、
ことを特徴とする請求項1に記載の電気手術発生器。 - 前記コントローラは、組織の前記区域について異なる乾燥レベルを識別して
前記組織の区域に適用されるべき異なる量のRFエネルギと、
前記組織の区域を乾燥させるための前記異なる量のRFエネルギの間でのRFエネルギの異なるランプ速度と、
を決定するように構成されていることを特徴とする請求項1に記載の電気手術発生器。
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