JP5376831B2 - 温度モニタリング戻り電極 - Google Patents
温度モニタリング戻り電極 Download PDFInfo
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Description
(技術分野)
本開示は、電気外科用装置、システムおよび方法に関する。より詳細には、本開示は、温度をモニターするような形態の1つ以上の戻り電極を利用する電気外科用システムに関する。
エネルギーを基礎にした組織処置は当該技術分野で周知である。種々のタイプのエネルギー(例えば、電気、超音波、マイクロ波、寒冷、熱、レーザーなど)が、所望の外科的結果を達成するために組織に印加され得る。電気外科は、代表的には、高周波電流の手術部位への印加を含み、組織を切断、切除(ablate)、凝固またはシールする。単極電気外科では、供給源または能動電極が電気外科用電源から組織に高周波エネルギーを送達し、そして戻り電極がこの電流を電源に戻す。単極電気外科では、供給電極は、代表的には、使用者によって保持され、そして処置されるべき組織に適用される外科用器具の一部である。患者戻り電極は、代表的には、患者に接着剤によって接着されるパッドの形態であり、そして能動電極から遠隔に配置され、電流を電源に戻して運ぶ。
(項目A1)電気外科用戻り電極であって:
第1の可撓性導電性材料層および第2の可撓性導電性材料層;および
その第1の可撓性導電性材料層と第2の可撓性導電性材料層との間に配置された材料層であって、固体状態と非固体状態との間で遷移可能であり、所定の閾値を超える温度の増加に際して溶融するような形態であり、それによってその第1の可撓性導電性材料層と第2の可撓性導電性材料層との間の導電性を増加する材料層、を備える、電気外科用戻り電極。
(項目A2)上記材料層が、脂質、ワックス、プラスチック、ゲル、ゼリー、およびポリマーヒドロゲルからなる群から選択される材料から形成される、項目A1に記載の電気外科用戻り電極。
(項目A3)上記材料層が、通常作動温度の間に実質的に固体状態のままである形態であり、上記第1の可撓性導電性材料層および第2の可撓性導電性材料層の可撓性を保持する、項目A1〜2のいずれかに記載の電気外科用戻り電極。
(項目A4)上記通常作動温度が、約20℃〜約37℃の範囲である、項目A3に記載の電気外科用戻り電極。
(項目A5)上記材料層が、上記所定の閾値とほぼ一致する融点を有する、項目A1〜4のいずれかに記載の電気外科用戻り電極。
(項目A6)電気外科用戻り電極であって:
電気外科用エネルギーを伝導するような形態の患者接触表面を有する戻り電極パッド;および
その戻り電極パッド上に配置された材料層であって、オーステナイト状態からマルテンサイト状態まで遷移する形状記憶材料から形成される少なくとも1つのスイッチ成分を有する少なくとも1つのスイッチ要素を含み、温度における変化に際し、その少なくとも1つのスイッチ要素のその少なくとも1つのスイッチ成分を起動する材料層を備える、電気外科用戻り電極。
(項目A7)上記形状記憶材料が、形状記憶合金を含む、項目A6に記載の電気外科用戻り電極。
(項目A8)上記形状記憶合金が、ニチノールおよびフレキシノールからなる群から選択される、項目A7に記載の電気外科用戻り電極。
(項目A9)上記形状記憶合金の比率が、上記形状記憶材料層が第1の温度で第1の形状のままである形態であり、そして所定の閾値温度で第2の形状に変形するような所定のレベルであるように選択される、項目A7または8に記載の電気外科用戻り電極。
(項目A10)上記少なくとも1つのスイッチ要素が、所定の閾値を超える温度における増加を示す、項目A6、7、8または9に記載の電気外科用戻り電極。
(項目A11)上記材料層が強磁性材料層であり、その強磁性材料層が磁場および少なくとも1つの温度感知スイッチを含み、所定の温度閾値で磁束を失うような形態であり、それによって少なくとも1つの温度感知スイッチを起動する、項目A6に記載の電気外科用戻り電極。
(項目A12)上記強磁性材料層が、ヒ酸マンガンから形成される、項目A11に記載の電気外科用戻り電極。
(項目A13)上記少なくとも1つの温度感知スイッチが、リードスイッチおよび磁場センサーから選択される、項目A11または12に記載の電気外科用戻り電極。
(項目A14)上記少なくとも1つの温度感知スイッチの起動が、所定の閾値を超える温度における増加を示す、項目A11、12または13に記載の電気外科用戻り電極。
(項目B1)電気外科用戻り電極であって:
第1の可撓性導電性材料層および第2の可撓性導電性材料層;および
その第1の可撓性導電性材料層と第2の可撓性導電性材料層との間に配置された材料層であって、固体状態と非固体状態との間で遷移可能であり、所定の閾値を超える温度の増加に際して溶融するような形態であり、それによってその第1の可撓性導電性材料層と第2の可撓性導電性材料層との間の導電性を増加する材料層、を備える、電気外科用戻り電極。
(項目B2)上記材料層が、脂質、ワックス、プラスチック、ゲル、ゼリー、およびポリマーヒドロゲルからなる群から選択される材料から形成される、項目B1に記載の電気外科用戻り電極。
(項目B3)上記材料層が、通常作動温度の間に実質的に固体状態のままである形態であり、上記第1の可撓性導電性材料層および第2の可撓性導電性材料層の可撓性を保持する、項目B1に記載の電気外科用戻り電極。
(項目B4)上記通常作動温度が、約20℃〜約37℃の範囲である、項目B3に記載の電気外科用戻り電極。
(項目B5)上記材料層が、上記所定の閾値とほぼ一致する融点を有する、項目B1に記載の電気外科用戻り電極。
(項目B6)電気外科用戻り電極であって:
電気外科用エネルギーを伝導するような形態の患者接触表面を有する戻り電極パッド;および
その戻り電極パッド上に配置された材料層であって、オーステナイト状態からマルテンサイト状態まで遷移する形状記憶材料から形成される少なくとも1つのスイッチ成分を有する少なくとも1つのスイッチ要素を含み、温度における変化に際し、その少なくとも1つのスイッチ要素のその少なくとも1つのスイッチ成分を起動する材料層を備える、電気外科用戻り電極。
(項目B7)上記形状記憶材料が、形状記憶合金を含む、項目B6に記載の電気外科用戻り電極。
(項目B8)上記形状記憶合金が、ニチノールおよびフレキシノールからなる群から選択される、項目B7に記載の電気外科用戻り電極。
(項目B9)上記形状記憶合金の比率が、上記形状記憶材料層が第1の温度で第1の形状のままである形態であり、そして所定の閾値温度で第2の形状に変形するような所定のレベルであるように選択される、項目B7に記載の電気外科用戻り電極。
(項目B10)上記少なくとも1つのスイッチ要素が、所定の閾値を超える温度における増加を示す、項目B6に記載の電気外科用戻り電極。
(項目B11)電気外科用戻り電極であって:
電気外科用エネルギーを伝導するような形態の患者接触表面を有する戻り電極パッド;および
その戻り電極パッド上に配置された強磁性材料層であって、磁場および少なくとも1つの温度感知スイッチを含み、所定の温度閾値で磁束を失うような形態であり、それによってその少なくとも1つの温度感知スイッチを起動する強磁性材料層、を備える、電気外科用戻り電極。
(項目B12)上記強磁性材料層が、ヒ酸マンガンから形成される、項目B11に記載の電気外科用戻り電極。
(項目B13)上記少なくとも1つの温度感知スイッチが、リードスイッチおよび磁場センサーから選択される、項目B11に記載の電気外科用戻り電極。
(項目B14)上記少なくとも1つの温度感知スイッチの起動が、所定の閾値を超える温度における増加を示す、項目B11に記載の電気外科用戻り電極。
本開示は、電気外科用戻り電極に関する。開示は、患者に対する組織損傷を防ぐように適合された種々の機構および/または回路を有する電気外科用戻り電極パッドを提供する。この戻り電極パッドは温度をモニターし、そしてこの温度が所定の閾値に到達すると、このパッドは、安全回路および/またはアラームを起動する。さらに、使い捨て可能な部分、およびセンサーおよび/または制御回路を含む取り外し可能な部分を有する、モジュールのスマートな戻り電極が開示される。
本開示の特定の実施形態を、添付の図面を参照して本明細書中で以下に説明する。以下の説明では、本開示を不必要な詳細で不明確にすることを避けるために周知の機能または構築は詳細には説明されない。
電気外科用戻り電極が開示される。この戻り電極は、第1の可撓性導電性材料層および第2の可撓性導電性材料層、ならびにこの第1の可撓性導電性材料層と第2の可撓性導電性材料層との間に配置された材料層を含む。この材料層は、固体状態と非固体状態との間で遷移可能であり、所定の閾値を超える温度の増加に際して溶融するような形態であり、それによって上記第1の可撓性導電性材料層と第2の可撓性導電性材料層との間の導電性を増加する。
30 電極パッド
32 患者接触表面
38 PTC材料
76 形状記憶材料層
84 温度感知スイッチ
90 温度回路
110 電極パッド
152 マルチプレクサー
Claims (5)
- 電気外科用戻り電極であって、
該電気外科用戻り電極の第1の端から第2の端まで完全に延びている第1の可撓性導電性材料層および第2の可撓性導電性材料層と、
該第1の可撓性導電性材料層と該第2の可撓性導電性材料層との間に配置された材料層であって、該材料層が、固体状態と非固体状態との間で遷移可能であり、該固体状態では、該材料層が、該第1の可撓性導電性材料層と該第2の可撓性導電性材料層との間で電気外科用エネルギーを伝導するような形態であり、該非固体状態では、該材料層が、該第1の可撓性導電性材料層と該第2の可撓性導電性材料層との間で電気外科用エネルギーの伝導を防止するような形態であり、該材料層が、組織損傷が生じる温度に対応する所定の閾値を超えて温度が増加すると溶融するような形態であり、それによって該第1の可撓性導電性材料層と該第2の可撓性導電性材料層との間の電気的接触が破壊され、その結果、該第1の可撓性導電性材料層および該第2の可撓性導電性材料層を介して手術部位から該電気外科用エネルギーが伝導されない、材料層と
を備える、電気外科用戻り電極。 - 前記材料層が、脂質、ワックス、プラスチック、ゲル、ゼリー、ポリマーヒドロゲルからなる群から選択される材料から形成される、請求項1に記載の電気外科用戻り電極。
- 前記材料層が、通常作動温度の間に実質的に固体状態のままである形態であり、前記第1の可撓性導電性材料層および前記第2の可撓性導電性材料層の可撓性を保持する、請求項1〜2のいずれかに記載の電気外科用戻り電極。
- 前記通常作動温度が、約20℃〜約37℃の範囲である、請求項3に記載の電気外科用戻り電極。
- 前記材料層が、前記所定の閾値とほぼ一致する融点を有する、請求項1〜4のいずれかに記載の電気外科用戻り電極。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/803,090 | 2007-05-11 | ||
US11/803,090 US8231614B2 (en) | 2007-05-11 | 2007-05-11 | Temperature monitoring return electrode |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008279259A JP2008279259A (ja) | 2008-11-20 |
JP5376831B2 true JP5376831B2 (ja) | 2013-12-25 |
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EP (1) | EP1990020B1 (ja) |
JP (1) | JP5376831B2 (ja) |
AU (1) | AU2008202075B2 (ja) |
CA (1) | CA2630656A1 (ja) |
DE (1) | DE602008004184D1 (ja) |
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2008
- 2008-05-07 CA CA002630656A patent/CA2630656A1/en not_active Abandoned
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CA2630656A1 (en) | 2008-11-11 |
US20080281310A1 (en) | 2008-11-13 |
US8231614B2 (en) | 2012-07-31 |
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US8690867B2 (en) | 2014-04-08 |
EP1990020A3 (en) | 2009-03-04 |
AU2008202075A1 (en) | 2008-11-27 |
EP1990020B1 (en) | 2010-12-29 |
US8382749B2 (en) | 2013-02-26 |
EP1990020A2 (en) | 2008-11-12 |
DE602008004184D1 (de) | 2011-02-10 |
US20130158543A1 (en) | 2013-06-20 |
JP2008279259A (ja) | 2008-11-20 |
US20120283721A1 (en) | 2012-11-08 |
ES2358373T3 (es) | 2011-05-10 |
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