JPH11507857A - 電気外科器具 - Google Patents
電気外科器具Info
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- JPH11507857A JPH11507857A JP9503664A JP50366497A JPH11507857A JP H11507857 A JPH11507857 A JP H11507857A JP 9503664 A JP9503664 A JP 9503664A JP 50366497 A JP50366497 A JP 50366497A JP H11507857 A JPH11507857 A JP H11507857A
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- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A61B18/14—Probes or electrodes therefor
- A61B18/1482—Probes or electrodes therefor having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
- A61B2018/1246—Generators therefor characterised by the output polarity
- A61B2018/126—Generators therefor characterised by the output polarity bipolar
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1472—Probes or electrodes therefor for use with liquid electrolyte, e.g. virtual electrodes
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Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.器具シャフトと該シャフトの先端の電極アッセンブリとを有する、導電性流 体媒体の存在下で組織の処置を行うための電気外科器具であって、前記電極アッ センブリは、 露出した組織処置部を有する単一の活性電極と、 露出した流体接触面を有するリターン電極と、 前記活性電極と前記リターン電極との間に配置されてこれらを絶縁し、前記活 性電極の露出した前記処置部と前記リターン電極の露出した前記流体接触面とを 隔てる絶縁部材と、 を有し、露出した前記処置部、露出した前記流体接触部及び前記絶縁部材の寸 法形状は、(i)露出した前記流体接触面と該流体接触面から最も遠い露出した前 記処置部の部分との間の前記流体媒体を経た最短導通経路(P1)の長さと、(ii) 露出した前記流体接触面と露出した前記処置部との間の前記流体媒体を経た最短 導通経路(P2)の長さとの比が2:1より小さいかもしくは等しくなるようにな っている、 電気外科器具。 2.前記活性電極の前記露出した処置部は前記絶縁部材から第1の方向に突出し ており、前記リターン電極の前記流体接触面は前記活性電極の前記処置部の後方 に設定されており、前記絶縁部材は前記活性電極の露出した処置部と前記リター ン電極の前記流体接触面との間において前記活性電極を取り囲み、前記第1の方 向と直角な第2の方向で外側に突出して、前記流体媒体を通る電流を逸らすため の絶縁バリヤを形成し、それによって、露出した前記流体接触面と露出した前記 処置部との間の前記最短導電経路(P2)の長さを増加させるものである、請求項 1の器具。 3.前記第1の方向は処置軸を限定し、前記2つの最短導電経路(P1,P2)は 前記処置軸を含む共通の面内に有る請求項1の器具。 4.露出した前記流体接触面と露出した前記処置部との間の前記流体媒体を経た 最短導電経路(P2)の長さは少なくとも1mmである、請求項1の器具。 5.露出した前記流体接触面はほぼ円筒形であって長さと直径とを有し、前記流 体接触面の長さは少なくともその径ほどであり、(i)前記流体接触面と露出し た前記処置部の前記流体接触面から最も遠い部分との間の前記流体媒体を経た前 記最短導電経路(P1)と(ii)前記流体接触面の直径の比は多くて4.5:1で ある請求項1の器具。 6.(i)露出した前記流体接触面と露出した前記処置部の前記流体接触面から 最も遠い部分との間の前記流体媒体を経た前記最短導電経路(P1)の長さと(i i)露出した前記流体接触面と露出した前記処置部との間の前記流体媒体を経た 最短導電経路(P2)の長さの比は1.25より大きいか等しい請求項1の器具 。 7.当該器具に無線周波数電力を供給するための電気外科ジェネレータをさらに 有し、該ジェネレータは当該器具の前記活性電極及びリターン電極にそれぞれ接 続可能な少なくとも1対の電気外科出力コネクションを有する出力ステージと、 前記出力コネクション間に生じたピーク無線周波数出力電圧を表す検出信号を送 出するための検出回路と、前記検出信号によって所定のピーク無線周波数出力電 圧に達したことが示されると送電出力電力の減少を自動的に生じさせる電力調整 回路とを有している請求項1の電気外科システム。 8.前記電力調整回路は前記検出信号が前記閾値に達したことを示すと送電出力 電力の少なくとも50%の減少を生じさせるように作動でき、この減少は100 μsもしくはそれ以下の時間で行われる、請求項7のシステム。 9.前記電力調整回路は前記減少を20μsもしくはそれ以下の時間で行わせる ように作動できる請求項8のシステム。 10.前記出力ステージは少なくとも1つの無線周波数電力装置を有し、前記制 御回路は、出力電力の前記の少なくとも50%の減少を、無線周波数発振の個々 のサイクルの間に前記装置への供給電力とは独立して前記装置の導通時間を減少 させることによって行うように構成されている請求項7のシステム。 11.前記検出回路と前記電力調整回路とは、ピークレベルから谷レベルまでの 電力装置のサイクル毎の導通時間の迅速な減少を、導通時間が再びピークレベル に達するまで、繰り返し行ない、谷レベルの後には導通時間の僅かな迅速な漸増 が続くように作動でき、一連の迅速な減少と漸増は、出力電圧が前記所定の閾値 を超えることなく前記ピーク導通時間レベルに達するまで前記出力ステージへの 供給電力を同時に減少させつつ、繰り返される請求項10のシステム。 12.器具本体と、細長い器具シャフトと、該シャフトの先端の電極アッセンブ リとを有する、導電性流体媒体の存在下で組織の処置を行うための電気外科器具 であって、前記電極アッセンブリは、 露出した組織処置部を有する単一の活性電極と、 前記活性電極の処置部の後方に位置し、絶縁部材によって前記処置部から隔て られた流体接触面を有し、前記処置部が前記流体媒体内に浸漬された組織面に近 づけられる時には前記流体接触面が通常は前記組織面から隔てられて、前記流体 媒体が前記活性電極と前記リターン電極との間の導電経路となるようにする、リ ターン電極と、 を有する電気外科器具。 13.前記リターン電極は前記活性電極の後ろにおいて前記絶縁部材のまわりに 設けられた導電性のスリーブを有する請求項12の器具。 14.前記活性電極の前記処置部は前記アッセンブリの最先端に配置されており 、前記リターン電極の前記流体接触面は前記活性電極の前記処置部から基端方向 に隔てられており、前記活性電極の前記露出部は長さと幅とを有し、その長さは 幅の少なくとも半分よりも大きい請求項12の器具。 15.前記活性電極の前記露出部と前記リターン電極の前記流体接触面との間の 長手方向の間隔は少なくとも1mmである請求項14の器具。 16.(i)前記活性電極の前記露出部の先端と前記リターン電極の最先端部分 との間の長手方向の距離と、(ii)前記活性電極の前記露出部と前記リターン電 極の最先端部分との間の最短長手方向距離との比は2:1よりも小さいか等しい 請求項15の器具。 17.前記リターン電極は前記絶縁部材を取り囲む流体接触面を有しており、( i)前記活性電極の前記露出部の先端と前記リターン電極の前記流体接触面の先 端縁との間の長手方向の距離と、(ii)前記先端縁の領域における前記流体接触 面の周との比は1.43:1よりも小さいか等しい請求項15もしくは16の器 具。 18.前記器具シャフトはその主たる構成部材として金属製のチューブを有して おり、前記リターン電極は前記チューブの先端部に一体で形成されている請求項 12の器具。 19.器具本体と、細長い器具シャフトと、該シャフトの先端の電極アッセンブ リとを有する、導電性流体媒体の存在下で組織の処置を行うための電気外科器具 であって、前記電極アッセンブリは、露出した活性電極処置インターフェースと 、該処置インターフェースの後方に位置し、絶縁部材によりこれから隔てられた 露出したリターン電極流体インターフェースとを有し、前記処置インターフェー スは前記絶縁部材から外方に突出しており、前記流体インターフェースの表面積 は前記処置インターフェースの表面積りも大きく、前記処置インターフェースは 前記外方と直角な方向の幅の半分よりも大きいか等しい距離で前記絶縁部材か ら外側に延びている、電気外科器具。 20.前記シャフトは長手方向軸を限定しており、前記処置インターフェースは 導電性の軸方向突部であって、その軸方向長さはその横方向の幅の半分よりも大 きく、前記絶縁部材は前記突部の基端方向に配置された同軸のセラミックスリー ブであり、前記流体インターフェースは前記絶縁部材を取り囲み、少なくとも1 mm軸方向間隔で前記処置インターフェースから隔てられている導電性外側スリー ブである請求項19の器具。 21.前記処置インターフェースは前記絶縁部材から前記外方と直角な方向の幅 よりも大きな距離で外側に延びている請求項19の器具。 22.前記活性電極処置インターフェースは導電性の活性電極チップを有し、そ の前記外方への長さは幅の少なくとも半分であり、前記絶縁部材は前記チップ部 材に近接する端面を有し、該端面は前記チップ部材の長さの半分以上には前記チ ップ部材を超えて横方向には延びない請求項19の器具。 23.導電性流体媒体の存在下において組織を処置するための電気外科器具であ って、 器具シャフトと、 前記シャフトの先端の電極アッセンブリを有し、該電極アッセンブリは先端を 有しまた活性電極とリターン電極とを有し、前記電極アッセンブリの前記先端に は前記活性電極の露出部が位置し、また前記活性電極の前記露出部の基端方向に は前記リターン電極の流体接触面が位置しており、さらに、前記活性電極と前記 リターン電極との間に配置されてこれらを電気的に絶縁する絶縁部材を有し、前 記活性電極の前記露出部は長さと幅とを有し、該活性電極の露出部の長さは該活 性電極の露出部の幅よりも大きい、 電気外科器具。 24.前記活性電極の露出部は前記シャフトの前記先端から長手方向に延びてい る請求項23の器具。 25.前記絶縁部材はほぼ円筒状のスリーブを有し、前記リターン電極は前記活 性電極の前記露出部から前記スリーブの長手方向外側に少なくとも1mmの距離で 位置している請求項23の器具。 26.前記絶縁部材は肩部を形成する環状の先端面を有し、前記活性電極の露出 部は前記絶縁部材の先端面に対して中央に位置してこれから突出しており、前記 肩部の前記活性電極から横方向に離れる方向の深さは、lを中央の活性電極露出 部の長さとすると、0.05lと0.5lとの間である請求項25の器具。 27.前記活性電極の露出部、前記リターン電極の流体接触面及び前記絶縁部材 の寸法形状は、前記電極アッセンブリが導電性流体媒体中に浸漬されたときに、 (i)前記リターン電極の流体接触面と、前記活性電極の露出部の前記流体接触 面から最も遠い部分との間の前記流体媒体を経た最短導電経路の長さと(ii)前記 リターン電極の流体接触面と前記活性電極の前記部分との間の前記流体媒体を経 た最短導電経路の長さの比が2:1よりも小さいか等しくなるようなものである 請求項26の器具。 28.前記リターン電極の流体接触面と前記活性電極の露出部との間の前記流体 媒体を経る最短導通経路の長さは少なくとも1mmである請求項27の器具。 29.前記リターン電極の流体接触面は環状で長さと径を有しており、該流体接 触面の長さは少なくともその径ほどであり、(i)前記リターン電極の流体接触 面と、前記活性電極の露出部の前記流体接触面から最も遠い部分との間の前記流 体媒体を経た最短導電経路の長さと(ii)前記流体接触面の径との比は多くて4. 5:1である請求項27の器具。 30.前記絶縁部材は当該器具の先端に向けてテーパ状をなすほぼ円錐状部材を 有する請求項24の器具。 31.活性電極とリターン電極とを有し、前記活性電極は露出した処置部を有し 、前記リターン電極は露出した前記処置部から隔てられて後方に位置された露出 した流体接触面を有してなる二極電極アッセンブリを用いて組織を乾燥させるた めの方法であって、 (a)前記電極アッセンブリを選択された手術箇所に導入する段階、 (b)前記電極アッセンブリを導電性流体で取り囲んで、前記導電性流体が前 記活性電極及びリターン電極との間の電気経路を形成するようにする段階、 (c)前記電極アッセンブリに十分な無線周波数出力電力を加えて、前記処置 部のまわりに蒸気ポケットを形成することなく前記活性電極に近接する前記導電 性流体の温度を上昇させる段階、 (d)前記リターン電極の流体接触面の前記組織との非接触を維持しつつ前記 処置部を前記組織に接触させる段階、 を有する方法。 32.前記段階(d)は露出した前記処置部の一部を前記組織と非接触状態に維 持する段階を含む請求項31の方法。 33.前記段階(d)は、 (e)前記活性電極を前記組織の面を横切って動かす段階、 をさらに有する請求項32の方法。 34.前記段階(e)は、前記活性電極を前記組織面を横切って両辺動作(side- to-Side-motion)で動かす段階を含む請求項33の方法。 35.前記段階(c)は前記活性電極の処置部の近傍の前記導電性流体の温度を 該導電性流体のほぼ沸点に維持する段階を含む請求項31の方法。 36.前記導電性流体は生理食塩水からなる請求項31の方法。 37.前記導電性流体は化合物乳酸ナトリウム溶液からなる請求項31の方法。 38.活性電極とリターン電極とを有し、前記活性電極は露出した処置部を有し てなる二安定電極アッセンブリを用いて組織を蒸発させるための方法であって、 (a)前記電極アッセンブリを選択された手術箇所に導入する段階、 (b)前記電極アッセンブリを導電性流体で取り囲む段階、 (c)前記電極アッセンブリに十分な無線周波数出力電力を加えて、前記活性 電極に近接する前記導電性流体を蒸発させて、前記処置部のまわりに蒸気ポケッ トを形成する段階、 (d)前記リターン電極の流体接触面の前記組織との非接触を維持しつつ前記 蒸気ポケットが前記組織と接触した状態で前記活性電極の処置部を前記組織に近 接して位置させる段階、 を有する方法。 39.前記段階(d)は、 (e)前記活性電極の処置部を前記組織の面にわたって動かす段階 をさらに有する請求項38の方法。 40.前記段階(e)は前記活性電極を前記組織面にわたって両辺動作で動かす 段階を含む請求項39の方法。 41.前記段階(e)は前記組織を成形するために前記活性電極を前記組織面に わたって動かす段階を含む請求項39の方法。 42.前記導電性流体は生理食塩水溶液からなる請求項38の方法。 43.前記導電性流体は化合物乳酸ナトリウム溶液からなる請求項38の方法。 44.前記活性電極の処置部は先端部であり、前記リターン電極の露出した流体 接触面は前記処置部から基端方向に隔てられており、前記段階(a)は露出した 処置部の一部を組織に近接して位置させ、時々組織と接触させる段階を含む請求 項38の方法。
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GBGB9512889.8A GB9512889D0 (en) | 1995-06-23 | 1995-06-23 | An electrosurgical instrument |
GB9512888.0 | 1995-06-23 | ||
GBGB9512888.0A GB9512888D0 (en) | 1995-06-23 | 1995-06-23 | An electrosurgical generator |
GB9512889.8 | 1995-06-23 | ||
GBGB9600352.0A GB9600352D0 (en) | 1996-01-09 | 1996-01-09 | Electrosurgical instrument |
GB9600355.3 | 1996-01-09 | ||
GBGB9600355.3A GB9600355D0 (en) | 1995-06-23 | 1996-01-09 | Electrosurgical instrument |
GB9600352.0 | 1996-01-09 | ||
PCT/GB1996/001473 WO1997000647A1 (en) | 1995-06-23 | 1996-06-20 | An electrosurgical instrument |
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JPH11507857A true JPH11507857A (ja) | 1999-07-13 |
JP3798022B2 JP3798022B2 (ja) | 2006-07-19 |
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JP50366497A Expired - Lifetime JP3798022B2 (ja) | 1995-06-23 | 1996-06-20 | 電気外科器具 |
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US (2) | US6004319A (ja) |
EP (2) | EP0771176B2 (ja) |
JP (1) | JP3798022B2 (ja) |
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CN (1) | CN1095641C (ja) |
AR (1) | AR002570A1 (ja) |
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BR (1) | BR9609421A (ja) |
CA (1) | CA2224858C (ja) |
DE (2) | DE69609473T3 (ja) |
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- 1996-06-20 EP EP96918768A patent/EP0771176B2/en not_active Expired - Lifetime
- 1996-06-20 EP EP00110410A patent/EP1025807B1/en not_active Expired - Lifetime
- 1996-06-20 JP JP50366497A patent/JP3798022B2/ja not_active Expired - Lifetime
- 1996-06-20 DE DE69609473T patent/DE69609473T3/de not_active Expired - Lifetime
- 1996-06-20 CN CN96196280A patent/CN1095641C/zh not_active Expired - Lifetime
- 1996-06-20 US US08/702,512 patent/US6004319A/en not_active Expired - Lifetime
- 1996-06-20 AU AU61321/96A patent/AU710619B2/en not_active Expired
- 1996-06-20 IL IL12271396A patent/IL122713A/en not_active IP Right Cessation
- 1996-06-20 WO PCT/GB1996/001473 patent/WO1997000647A1/en active IP Right Grant
- 1996-06-20 KR KR1019970709680A patent/KR100463935B1/ko not_active IP Right Cessation
- 1996-06-20 ES ES00110410T patent/ES2233239T3/es not_active Expired - Lifetime
- 1996-06-20 ES ES96918768T patent/ES2150676T5/es not_active Expired - Lifetime
- 1996-06-20 BR BR9609421A patent/BR9609421A/pt not_active IP Right Cessation
- 1996-06-20 CA CA002224858A patent/CA2224858C/en not_active Expired - Lifetime
- 1996-06-20 DE DE69634014T patent/DE69634014T2/de not_active Expired - Lifetime
- 1996-06-21 AR ARP960103276A patent/AR002570A1/es unknown
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1998
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JP2016040002A (ja) * | 2010-10-22 | 2016-03-24 | ジャスト ライト サージカル,リミティド ライアビリティ カンパニー | 外科血管封止用の高周波発生器システム |
US9649149B2 (en) | 2010-10-22 | 2017-05-16 | Just Right Surgical, Llc | RF generator system for surgical vessel sealing |
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Also Published As
Publication number | Publication date |
---|---|
EP0771176A1 (en) | 1997-05-07 |
ES2233239T3 (es) | 2005-06-16 |
US6004319A (en) | 1999-12-21 |
EP0771176B1 (en) | 2000-07-26 |
WO1997000647A1 (en) | 1997-01-09 |
BR9609421A (pt) | 1999-05-18 |
CN1095641C (zh) | 2002-12-11 |
EP1025807A3 (en) | 2000-10-04 |
KR100463935B1 (ko) | 2005-05-16 |
DE69609473T3 (de) | 2006-09-28 |
EP1025807B1 (en) | 2004-12-08 |
AR002570A1 (es) | 1998-03-25 |
EP0771176B2 (en) | 2006-01-04 |
AU710619B2 (en) | 1999-09-23 |
AU6132196A (en) | 1997-01-22 |
IL122713A (en) | 2001-04-30 |
DE69609473D1 (de) | 2000-08-31 |
KR19990028364A (ko) | 1999-04-15 |
ES2150676T3 (es) | 2000-12-01 |
ES2150676T5 (es) | 2006-04-16 |
JP3798022B2 (ja) | 2006-07-19 |
CA2224858A1 (en) | 1997-01-09 |
CN1193268A (zh) | 1998-09-16 |
EP1025807A2 (en) | 2000-08-09 |
DE69609473T2 (de) | 2001-04-26 |
MX9800249A (es) | 1998-07-31 |
DE69634014D1 (de) | 2005-01-13 |
IL122713A0 (en) | 1998-08-16 |
CA2224858C (en) | 2006-11-14 |
US6056746A (en) | 2000-05-02 |
DE69634014T2 (de) | 2006-03-02 |
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