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公开(公告)号：JP2506542B2
公开(公告)日：1996-06-12
申请号：JP51143792
申请日：1992-05-04
Applicant: VALLEYLAB INC , KLICEK MICHAEL S , ZIEVE DAVID A
Inventor： KLICEK MICHAEL S , ZIEVE DAVID A
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公开(公告)号：JPH06502573A
公开(公告)日：1994-03-24
申请号：JP51143792
申请日：1992-05-04
Applicant: VALLEYLAB INC , KLICEK MICHAEL S , ZIEVE DAVID A
Inventor： KLICEK MICHAEL S , ZIEVE DAVID A
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公开(公告)号：WO9711648A3
公开(公告)日：1997-06-12
申请号：PCT/IB9600618
申请日：1996-06-28
Applicant: VALLEYLAB INC
Inventor： BECKER DANIEL J , KLICEK MICHAEL S
CPC classification number: A61B18/1206 , A61B2018/00875
Abstract: A constant power control circuit (107) for an electrosurgical generator (101) and a method for maintaining the electrical power output of an electrosurgical generator (101) at a generally constant value throughout a given tissue impedance range are disclosed. The constant power control circuit (107) and the method recognize and use the unique and simple linear characteristics associated with certain electrosurgical generator (101) designs to monitor and control the electrical power output without having to calculate or monitor the actual output power. The constant power control circuit (107) includes a current sampling circuit (115), a linear conversion circuit (117), and a feedback correction circuit (119). The constant power control circuit (107) may also include protection circuitry that prevents the electrosurgical generator (101) from being over-driven during high and/or low impedance loading (121), and reduces the severity of exit sparking by providing a quick response to high impedance indications while nonetheless maintaining increased power levels throughout a preset, nominal impedance range. The constant power control circuit (107) and method may be included as an integral part of the overall electrosurgical generator's (101) circuitry, or may be embodied as a separate unit that connects to, and controls, an electrosurgical generator (101). The constant power control circuit (107) and method may be embodied through a variety of analog and/or digital circuit components or arrangements, including software running on computational and memory circuitry.
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公开(公告)号：WO9525471A2
公开(公告)日：1995-09-28
申请号：PCT/IB9500051
申请日：1995-01-23
Applicant: VALLEYLAB INC , KLICEK MICHAEL S
Inventor： KLICEK MICHAEL S
CPC classification number: A61B18/1482 , A61B18/1402 , A61B2018/00196 , A61B2018/00916 , A61B2018/00958 , A61B2018/1253 , A61B2018/126 , A61B2018/1425
Abstract: A handpiece (11) with a moveable switchable electrode (12) delivers high frequency electrosurgery. The electrode switches (28) from a first monopolar mode with an active electrode (14) extending from the handpice (11) and a patient (13) return electrodes (15a and 15b) to a second bipolar mode with the active and return electrodes (15a and 15b) extending. Electrosurgical generator (16) outputs supply energy to the electrodes. Bipolar terminals (18) supply energy to the electrodes for use in the second mode. An active lead (19a) selectively connects the active output and the active electrode (14). A return lead (20a and 20b) selectively connects the return electrode (15a and 15b) and the return output in the first mode or the return terminal when in the second mode. Terminals connect with wiring to the electrodes in the handpiece (11) to complete the circuit for the second mode. One terminal is on the generator and the other is in the handpiece (11) to connect to the electrodes and complete the circuit for the second mode. The electrode has a control (12') on the handpiece (11) for the surgeon to change circuitry and to position the electrode for each mode. The control (12') and return electrode (15a and 15b) are moveably supported by the handpiece (11). The return electrode (15a and 15b) in the first mode is positioned inside the handpiece (11) disconnected from its terminal. The return electrode (15a and 15b) connects to its terminal when extended from the handpiece (11). The return electrode (15a and 15b) when used in the first mode, has a pair of pads (21) attached to the patient (13) and connected to a monitoring circuit (22) for testing continuity between each pad and the patient (13). The handpiece (11) has an elongated support extending distally. A method of use has steps including providing the handpiece (11) and electrode, switching the electrode from the first mode to the second mode, providing the generator with outputs for supplying energy to the electrodes, having terminals for the electrodes when used in the second mode, including an active lead (19a) selectively in circuit between the active output and electrode and including a return lead (20a and 20b) selectively in circuit between the return electrode (15a and 15b) and output when in the first mode or the terminal when in the second mode.
Abstract translation: 具有可移动可切换电极（12）的手持件（11）提供高频电外科手术。 来自第一单极模式的电极开关（28）具有从手持器（11）延伸的有源电极（14）和患者（13）将电极（15a和15b）返回到具有有源和返回电极的第二双极模式 15a和15b）延伸。 电外科发生器（16）向电极输出能量。 双极端子（18）向第二模式中的电极供应能量。 有源引线（19a）有选择地连接有源输出和有源电极（14）。 当处于第二模式时，返回引线（20a和20b）选择性地连接第一模式中的返回电极（15a和15b）和返回输出端。 端子连接到手机（11）中的电极的布线，以完成用于第二模式的电路。 一个端子在发电机上，另一个端子在手持件（11）中，以连接到电极并且完成用于第二模式的电路。 电极在手持件（11）上具有控制（12'），用于外科医生改变电路并且为每个模式定位电极。 控制器（12'）和返回电极（15a和15b）由手持件（11）可移动地支撑。 第一模式中的返回电极（15a和15b）位于从其端子断开的手持件（11）的内部。 当从手持件（11）延伸时，返回电极（15a和15b）连接到其端子。 当在第一模式下使用时，返回电极（15a和15b）具有附接到患者（13）并且连接到监测电路（22）的一对垫（21），用于测试每个垫和患者（13）之间的连续性 ）。 手持件（11）具有向远侧延伸的细长支撑件。 一种使用方法包括提供手持件（11）和电极，将电极从第一模式切换到第二模式，向发生器提供用于向电极提供能量的输出，当在第二模式中使用电极时，具有用于电极的端子 模式，包括在有源输出和电极之间有选择地在电路中的有源引线（19a），并且在返回电极（15a和15b）之间包括选择性地在电路中的返回引线（20a和20b），并且在第一模式或端子 当处于第二模式时。
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公开(公告)号：CA2130554C
公开(公告)日：1999-03-02
申请号：CA2130554
申请日：1993-01-11
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S
Abstract: An electrosurgical bipolar cutting apparatus comprising a handpiece (1) to which is connected a first active electrode and a second return electrode having exposed distal ends (6, 7) which define a tip for electrosurgically cutting tissue at an operational site on a patient, which tip is structured so that both distal ends simultaneously contact said tissue and wherein the active electrode has a higher tissue to electrode impedance than the return electrode.
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Patent Agency Ranking
公开(公告)号：DE69227130D1
公开(公告)日：1998-10-29
申请号：DE69227130
申请日：1992-05-04
Applicant: VALLEYLAB INC , KLICEK MICHAEL S , ZIEVE DAVID A
Inventor： KLICEK MICHAEL S , ZIEVE DAVID A
Abstract: An electrical circuit system which provides electrical energy to a surgical apparatus having ultrasonic fragmentation, aspiration and electrosurgical coagulation capabilities, which system also includes an impedance sensing network and automatic feedback power output control to reduce RF power output as load impedance increases, thereby reducing RF leakage current.
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公开(公告)号：AU684756B2
公开(公告)日：1998-01-08
申请号：AU6289394
申请日：1994-04-06
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S , PATERSON WILLIAM G
Abstract: A circuit, for monitoring and controlling parameters of an electrosurgical unit, ESU, relative to load and the RF energy, has a load responsive output sensing circuit that measures the ESU load. A signal modifier, attached to the sensing circuit enhances the signals measured and transmits them to a buffer. An analog to digital converter, A/D, digitize the signals and samples wave pulse train at about eight million samples per second. A data memory stores the digitized signals. A RF drive clock connects to the ESU output; a sample clock uses phase shifting to interrogate the input signals to a processor, DSP, at a greater sampling rate of frequency than without. The DSP receives the stored signals from the data memory and processes them while monitoring and calculating ESU parameters measured, i.e. voltage, current, power, load impedance, leakage current, peak to peak voltage, peak to peak current, spectral content and/or crest factor of the RF wave pulse train energy to use as controlling feedback to the either a high voltage power supply in the ESU, regulating the RF drive pulses or both. A method monitors and controls the ESU relative to load has the steps of collecting parameters with the ESU output sensing circuit responsive to loads; enhancing signals with the signal modifier; transmitting signals to the buffer; converting signals with the A/D converter; storing signals in the data memory; receiving signals in the DSP, and processing, monitoring and controlling signals by repeatedly measuring ESU output parameters.
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公开(公告)号：AU678228B2
公开(公告)日：1997-05-22
申请号：AU6436294
申请日：1994-04-26
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S , PATERSON WILLIAM G
Abstract: Apparatus and method find leakage due to tissue load or transients and has active and return electrodes for RF energy sensed by transformers for a circuit that finds leakage at more than two thousand times per second or a frequency dependent on the phase shift between voltage and current. Software and feedback manage Vrms to reduce the voltage or increase the crest factor, which is Vrms divided by peak voltage, by pulse width modulation of the RF drive. Voltage and current phase shift changes, angle theta , are compared to a threshold, and when greater, the frequency at which the differences between the active and return current signals are examined is increased. The differences between the active and return currents are examined and when greater than maximum leakage while in coagulation mode, the RF drive pulse width is reduced to maintain voltage wave peaks at a preset value and reduce Vrms thereby reducing leakage to the allowable maximum. Reducing the duty cycle or the pulse width of the output wave increases the crest factor. When the differences between active and return currents are greater than a maximum for leakage while in cut or bipolar mode, the Vrms is reduced to limit leakage to a maximum level. When the phase angle theta is less than a threshold, the frequency with which leakage is examined is reduced.
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公开(公告)号：NO954153A
公开(公告)日：1995-10-18
申请号：NO954153
申请日：1995-10-18
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S , PATERSON WILLIAM G
CPC classification number: A61B18/1206 , A61B18/1233 , A61B2018/00666 , A61B2018/00678 , A61B2018/00702 , A61B2018/00708 , A61B2018/00875
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公开(公告)号：CA2160017A1
公开(公告)日：1994-10-27
申请号：CA2160017
申请日：1994-04-06
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S , PATERSON WILLIAM G
Abstract: A circuit, for monitoring and controlling parameters of an electrosurgical unit, ESU, relative to load and the RF energy, has a load responsive output sensing circuit that measures the ESU load. A signal modifier, attached to the sensing circuit enhances the signals measured and transmits them to a buffer. An analog to digital converter, A/D, digitize the signals and samples wave pulse train at about eight million samples per second. A data memory stores the digitized signals. A RF drive clock connects to the ESU output; a sample clock uses phase shifting to interrogate the input signals to a processor, DSP, at a greater sampling rate of frequency than without. The DSP receives the stored signals from the data memory and processes them while monitoring and calculating ESU parameters measured, i.e. voltage, current, power, load impedance, leakage current, peak to peak voltage, peak to peak current, spectral content and/or crest factor of the RF wave pulse train energy to use as controlling feedback to the either a high voltage power supply in the ESU, regulating the RF drive pulses or both. A method monitors and controls the ESU relative to load has the steps of collecting parameters with the ESU output sensing circuit responsive to loads; enhancing signals with the signal modifier; transmitting signals to the buffer; converting signals with the A/D converter; storing signals in the data memory; receiving signals in the DSP, and processing, monitoring and controlling signals by repeatedly measuring ESU output parameters.
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