JPH06502790A - 電気外科発生器用の電流漏洩制御 - Google Patents
電気外科発生器用の電流漏洩制御Info
- Publication number
- JPH06502790A JPH06502790A JP4502209A JP50220992A JPH06502790A JP H06502790 A JPH06502790 A JP H06502790A JP 4502209 A JP4502209 A JP 4502209A JP 50220992 A JP50220992 A JP 50220992A JP H06502790 A JPH06502790 A JP H06502790A
- Authority
- JP
- Japan
- Prior art keywords
- current
- power
- signal
- leakage
- electrosurgical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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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
- A61B18/1206—Generators therefor
- A61B18/1233—Generators therefor with circuits for assuring patient safety
-
- 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
- A61B18/1206—Generators therefor
-
- 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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00779—Power or energy
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Otolaryngology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Synchronous Machinery (AREA)
- Magnetic Treatment Devices (AREA)
- Materials For Medical Uses (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
Description
Claims (10)
- 1.高周波数の電気外科電力を提供するための電気外科発生器と、該電気外科発 生器から患者へ電流を供給するための供給リード線手段と、該患者から前記電気 外科発生器へ電流を帰還させるための帰還リード線手段と、前記電気外科発生器 の出力電力を所定の要求された出力電力にほぼ等しい値に規制するための前記電 気外科発生器の電力制御フィードバック・ループ手段とを備える電気外科システ ムにおいて、 出力リード線に流れる電流と前記帰還リード線に流れる電流との間の不平衡を決 定するための手段であって、電流漏洩感知信号を発生するように動作する電流漏 洩感知手段と、 前記電流漏洩感知信号に応答する手段であって、該電流漏洩感知信号が所定の値 を超えるとき、前記電気外科発生器により供給される出力電流を低減するように 前記電力制御フィードバック・ループ手段を制御するための制御手段と、を具備 する電気外科システム。
- 2.請求項1記載の発明であって、前記制御手段が、前記電気外科発生器によっ て供給される出力電力を、漏洩電流が前記所定の値を越えない最大値に制限する ように前記電力制御フィードバック・ループ手段を更に制御する発明。
- 3.請求項2記載の発明であって、前記制御手段が、電流不平衡が前記所定の値 に等しいかそれよりも小さくなるまで、前記電気外科発生器によって供給される 電力の量を低減するように前記電力制御フィードバック・ループ手段を更に制御 する発明。
- 4.請求項3記載の発明であって、前記制御手段が、前記電力制御フィードバッ ク・ループ手段が前記電気外科発生器の出力電力を規制している間に前記電力制 御フィードバック・ループ手段を更に制御する発明。
- 5.請求項3記載の発明であって、前記電流漏洩感知手段が、コアと第1の巻線 と第2の巻線と感知巻線とを含む差動変成器手段を備えており、前記巻線のそれ ぞれは前記コアの回りに巻回され、前記供給リード線手段は前記第1の巻線に接 続され、前記帰還リード線手段は前記第2の巻線に接続され、前記差動変成器手 段は前記第1の巻線と前記第2の巻線とに流れる電流の間の不平衡を感知し、前 記不平衡に比例する電流を前記感知巻線に発生し、前記感知巻線の電流は前記電 流漏洩感知信号から導き出される発明。
- 6.請求項5記載の発明であって、前記電気外科発生器の前記電力制御フィード バック制御ループ手段が、 前記電気外科発生器の出力電力と前記電気外科発生器の要求された出力電力との 差を表す電力制御信号を供給するための手段と、前記制御信号に応答して前記電 気外科発生器の出力電力を規制するための規制手段と を具備し、制御手段が、 前記感知巻線での電流を第1の信号へ変換するための変換器手段と、最大許容漏 洩電流の所定の値を表す第2の信号を供給するための設定点手段と、前記第1の 信号と前記第2の信号とを受け取って、これらの信号の大きさの差を増幅し、そ の結果の信号を第3の信号として供給するために動作する増幅手段と、 前記電力制御信号と前記第3の信号とを受け取って、これらの信号のうちの大き い方を前記電力制御フィードバック・ループ制御手段の前記規制手段に供給する ために動作する選択器手段と、 を具備する発明。
- 7.請求項6記載の発明であって、前記変成器手段が、前記巻線が巻回されてい るコアを有し、前記第1の巻線と前記第2の巻線とが該コアの回りに反対方向に 巻回されている発明。
- 8.活動電極に印加される電気外科電力を制限し、最大許容レベルよりも大きな 大きさの漏洩電流を回避する方法において、要求された電力レベルに応答して電 気外科電力を発生する段階と、前記活動電極に電流を供給し、分散電極から帰還 電流を受け取ることによって、前記電気外科電力を印加する段階と、 供給される電気外科電流と受け取る電気外科電流との量の間の不平衡を感知する 段階と、 印加される電気外科電力のレベルを低減し、感知された電流の不平衡を前記最大 許容レベル以下に維持する段階と、 を備える方法。
- 9.請求項8記載の方法であって、印加される出力電力を、漏洩電流が前記最大 許容レベルを越えない最大値に制限する段階を更に備える方法。
- 10.請求項8記載の方法であって、供給される電気外科電力の大きさを、漏洩 電流が前記最大許容レベルを越えない値に維持する段階を含む方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/614,275 US5152762A (en) | 1990-11-16 | 1990-11-16 | Current leakage control for electrosurgical generator |
US614,275 | 1990-11-16 | ||
PCT/US1991/006956 WO1992008417A1 (en) | 1990-11-16 | 1991-09-24 | Current leakage control for electrosurgical generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06502790A true JPH06502790A (ja) | 1994-03-31 |
JP3036842B2 JP3036842B2 (ja) | 2000-04-24 |
Family
ID=24460557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP04502209A Expired - Lifetime JP3036842B2 (ja) | 1990-11-16 | 1991-09-24 | 電気外科発生器用の電流漏洩制御 |
Country Status (13)
Country | Link |
---|---|
US (1) | US5152762A (ja) |
EP (1) | EP0557438B1 (ja) |
JP (1) | JP3036842B2 (ja) |
KR (1) | KR0159118B1 (ja) |
AT (1) | ATE155028T1 (ja) |
AU (1) | AU9049691A (ja) |
BR (1) | BR9107089A (ja) |
CA (1) | CA2096335C (ja) |
DE (1) | DE69126787T2 (ja) |
DK (1) | DK0557438T3 (ja) |
ES (1) | ES2106168T3 (ja) |
NO (1) | NO931764L (ja) |
WO (1) | WO1992008417A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010194456A (ja) * | 2009-02-25 | 2010-09-09 | Fukui Prefecture | 圧電振動子の駆動装置 |
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- 1991-09-24 BR BR919107089A patent/BR9107089A/pt unknown
- 1991-09-24 WO PCT/US1991/006956 patent/WO1992008417A1/en active IP Right Grant
- 1991-09-24 DE DE69126787T patent/DE69126787T2/de not_active Expired - Lifetime
- 1991-09-24 CA CA002096335A patent/CA2096335C/en not_active Expired - Lifetime
- 1991-09-24 JP JP04502209A patent/JP3036842B2/ja not_active Expired - Lifetime
- 1991-09-24 AU AU90496/91A patent/AU9049691A/en not_active Abandoned
- 1991-09-24 EP EP92900900A patent/EP0557438B1/en not_active Expired - Lifetime
- 1991-09-24 AT AT92900900T patent/ATE155028T1/de not_active IP Right Cessation
- 1991-09-24 KR KR1019930701462A patent/KR0159118B1/ko not_active IP Right Cessation
- 1991-09-24 DK DK92900900.9T patent/DK0557438T3/da active
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1993
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JP2010194456A (ja) * | 2009-02-25 | 2010-09-09 | Fukui Prefecture | 圧電振動子の駆動装置 |
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WO1992008417A1 (en) | 1992-05-29 |
EP0557438B1 (en) | 1997-07-09 |
DE69126787T2 (de) | 1997-11-06 |
ES2106168T3 (es) | 1997-11-01 |
CA2096335C (en) | 1997-12-09 |
NO931764L (no) | 1993-07-07 |
JP3036842B2 (ja) | 2000-04-24 |
US5152762A (en) | 1992-10-06 |
CA2096335A1 (en) | 1992-05-17 |
BR9107089A (pt) | 1993-11-09 |
NO931764D0 (no) | 1993-05-14 |
ATE155028T1 (de) | 1997-07-15 |
KR0159118B1 (ko) | 1998-12-15 |
AU9049691A (en) | 1992-06-11 |
EP0557438A4 (en) | 1993-09-29 |
KR930701950A (ko) | 1993-09-08 |
EP0557438A1 (en) | 1993-09-01 |
DK0557438T3 (da) | 1998-02-23 |
DE69126787D1 (de) | 1997-08-14 |
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