JPH0352A - High frequency electric knife device - Google Patents
High frequency electric knife deviceInfo
- Publication number
- JPH0352A JPH0352A JP1135431A JP13543189A JPH0352A JP H0352 A JPH0352 A JP H0352A JP 1135431 A JP1135431 A JP 1135431A JP 13543189 A JP13543189 A JP 13543189A JP H0352 A JPH0352 A JP H0352A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- load
- output
- power supply
- power
- 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
- 238000001514 detection method Methods 0.000 claims description 11
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 7
- 238000002679 ablation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 10
- 238000003199 nucleic acid amplification method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 101000806511 Homo sapiens Protein DEPP1 Proteins 0.000 description 2
- 102100037469 Protein DEPP1 Human genes 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000002902 bimodal effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は高周波７電気メス装置、詳しくは高周波電流
を出力して外科的治療を行なう高周波電気メス装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high frequency 7 electric scalpel device, and more particularly to a high frequency electric scalpel device that outputs high frequency current to perform surgical treatment.
［従来の技術］
従来、高周波電流を用いて人体組織の切開や凝固等を行
なう高周波電気メス装置が実用化されている。この高周
波電気メス装置は、出力制御を行なうスイッチを閉成し
た１１７点から適宜の設定条件で高周波出力を発生して
いる。ところで、高周波電気メス装置を構成する手段に
出力の特性を司どる電力増幅回路があるが、この電力増
幅回路は、負荷の変動により、ある負荷値でビーク出力
が得られるような負荷特性を有している。そのため、こ
の電気メス装置の出力端に接続される人体等の治療対象
物体の負荷がピーク出力を発生させる負荷値から大きく
離れると、上記電気メス装置の出力が大きく変わってし
まうこととなる。即ち、同−設定にも拘らず出力側の負
荷が変動すると出力の変動が大きくなってしまう。[Prior Art] Hitherto, high-frequency electric scalpel devices that perform incision, coagulation, etc. of human tissue using high-frequency current have been put into practical use. This high frequency electric scalpel device generates high frequency output under appropriate setting conditions from 117 points where switches for output control are closed. By the way, there is a power amplifier circuit that controls output characteristics as a means of configuring a high-frequency electric scalpel device, but this power amplifier circuit has load characteristics such that a peak output can be obtained at a certain load value due to load fluctuations. are doing. Therefore, if the load of the object to be treated, such as a human body, connected to the output end of the electric scalpel device deviates significantly from the load value that generates the peak output, the output of the electric scalpel device will change significantly. That is, if the load on the output side fluctuates despite the same setting, the output fluctuates greatly.
そこで、米国特許節４．７，２７，８７４号公報記載の
「高周波パルス幅変調された帰還電力制御を持つ電気外
科的発生器」では、高周波出力の自動１調整を目的とし
て高周波出力信号の電流と電圧を検出して電力を求め、
この電力によって高周波出力を帰還制御するようにして
いる。また、米国特許節４、ｆｉ５ｇ、８１９号公報記
載の「電気外科用発生器」では、生体組織に対して安定
した出力を供給することを目的として、生体の組織抵抗
をＡ−１定し、そのΔ−ｊ定値により第１および第２の
負荷抵抗を選択するようにしている。Therefore, in the ``Electrosurgical Generator with High Frequency Pulse Width Modulated Feedback Power Control'' described in U.S. Patent No. 4.7,27,874, the current of the high frequency output signal is Detect the voltage and find the power,
This power is used to feedback control the high frequency output. Furthermore, in the "electrosurgical generator" described in U.S. Patent Section 4, FI5G, No. 819, the tissue resistance of the living body is set to A-1 for the purpose of supplying a stable output to the living tissue. The first and second load resistances are selected based on the Δ-j constant value.
［発明が解決しようとする課題］
しかしながら、従来の高周波電気メス装置では、ある負
荷値でピーク出力となる負荷特性を有していたため、出
力側に接続される人体組織の負荷がピーク出力を発生す
る負荷値より離れていくに従って出力が低下し、焼灼能
力が低下することになってしまう。即ち、要求出力に設
定して焼灼しはじめても、組織負荷の変化により、焼灼
能力が大きく変ってしまうので、手技を行なっている術
者にとってはメスの切れ味が使用中に変わっていくとい
う扱いにくい高周波電気メス装置になってしまうことに
なる。[Problems to be Solved by the Invention] However, conventional high-frequency electric scalpel devices have a load characteristic in which the peak output occurs at a certain load value, so the load of the human tissue connected to the output side generates the peak output. As the distance from the load value increases, the output decreases and the ablation ability decreases. In other words, even if the required output is set and ablation begins, the ablation ability will change significantly due to changes in tissue load, making it difficult for the surgeon performing the procedure to notice that the sharpness of the scalpel changes during use. This results in a high-frequency electric scalpel device.
そこで、本発明の目的は、上述の問題点を解消し、出力
側に接続される人体組織の負荷が変化しても、発生出力
、即ち焼灼能力が大きく変らず手技を行ない易い高周波
電気メス装置を提供するにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a high-frequency electric scalpel device that solves the above-mentioned problems and that makes it easy to perform procedures without significantly changing the generated output, that is, the cauterization ability, even if the load on the human tissue connected to the output side changes. is to provide.
［課題を解決するための手段］
本発明の高周波電気メス装置は、高周波信号を発生する
信号発生回路と、高周波信号により駆動され、焼灼出力
を発生する電力増幅回路と、この電力増幅回路に電力を
供給し、電源電圧が可変な電源回路と、出力の状態から
負荷を検出する負荷検出回路と、負荷検出回路で検出さ
れた負荷が予め設定された値になったときに上記電源回
路に作用して電源電圧を変化させ、最大出力を一定にす
るよう最適負荷を変え、負荷特性においてピーク出力を
発生する負荷値を変える機能と、信号発生回路の出力を
制御する機能を有する制御回路と、を具備したことを特
徴とするものである。[Means for Solving the Problems] The high-frequency electric scalpel device of the present invention includes a signal generation circuit that generates a high-frequency signal, a power amplifier circuit that is driven by the high-frequency signal and generates an ablation output, and a power amplifier circuit that supplies power to the power amplifier circuit. a power supply circuit that supplies a variable power supply voltage, a load detection circuit that detects the load from the output state, and a circuit that acts on the power supply circuit when the load detected by the load detection circuit reaches a preset value. a control circuit having a function of changing the power supply voltage by changing the power supply voltage, changing the optimum load so as to keep the maximum output constant, and changing the load value that generates the peak output in the load characteristics, and a function of controlling the output of the signal generation circuit; It is characterized by having the following.
［作 用］
この高周波電気メス装置では、負荷検出回路により負荷
が検出され、その検出された負荷が予め設定された設定
範囲なら、制御回路が電源回路に作用し、これによって
電力増幅回路の電源電圧を変更して、発生する出力の負
荷特性を変化させる。[Function] In this high-frequency electric scalpel device, a load is detected by the load detection circuit, and if the detected load is within a preset setting range, the control circuit acts on the power supply circuit, thereby reducing the power supply of the power amplifier circuit. Change the voltage to change the load characteristics of the generated output.
［実 施 例］
以下、図面を参照して本発明を具体的に説明する。第１
図は、本発明の第１実施例を示す高周波電気メス装置の
ブロック系統図で、第２図と第３図は上記第１図に示す
電気メス装置の負荷特性の特性線図である。図において
、高周波信号を発生する信号発生回路１の出力端は、こ
の高周波信号により駆動され生体を焼灼する高周波出力
を発する０級共振利用の電力増幅回路２の入力端に接続
されている。この０級共振利用の電力増幅回路２は、同
増幅回路２に電力を供給し電源電圧が可変な電源回路７
に接続されており、更に出力の状態から負荷を検出する
負荷検出回路３にも接続されている。この負荷検出回路
３は、検出された負荷が予め設定された負荷値になると
、電源回路７に作用して電源電圧を変化させる制御回路
６に接続されている。制御回路６は、予め設定された負
６：ｊ値になると、電力増幅回路２へ供給される駆動信
号を調整するために信号発生回路１にも接続されている
。 このように構成されたこの第１実施例では、ある出
力設定にすると、信号発生回路１はその出力設定に応じ
た駆動信号を発生する。すると、この駆動信号に応動し
て０級共振利用の電力増幅回路２が焼灼出力を発生し、
焼灼電流が負荷検出回路３を介してこの電気メス装置の
能動電極４から人体８の被患部位に達し対極板５へ流れ
ることになる。[Example] The present invention will be specifically described below with reference to the drawings. 1st
1 is a block system diagram of a high frequency electric scalpel device showing a first embodiment of the present invention, and FIGS. 2 and 3 are characteristic diagrams of load characteristics of the electric scalpel device shown in FIG. 1. In the figure, the output end of a signal generation circuit 1 that generates a high frequency signal is connected to the input end of a power amplification circuit 2 using class 0 resonance that is driven by this high frequency signal and generates a high frequency output that cauterizes a living body. This power amplification circuit 2 using class 0 resonance includes a power supply circuit 7 that supplies power to the amplification circuit 2 and has a variable power supply voltage.
It is further connected to a load detection circuit 3 that detects the load from the output state. This load detection circuit 3 is connected to a control circuit 6 that acts on a power supply circuit 7 to change the power supply voltage when the detected load reaches a preset load value. The control circuit 6 is also connected to the signal generation circuit 1 in order to adjust the drive signal supplied to the power amplifier circuit 2 when a preset negative 6:j value is reached. In the first embodiment configured in this manner, when a certain output setting is made, the signal generating circuit 1 generates a drive signal according to the output setting. Then, in response to this drive signal, the power amplifier circuit 2 using class 0 resonance generates an ablation output,
The cauterizing current reaches the affected part of the human body 8 from the active electrode 4 of this electric scalpel device via the load detection circuit 3 and flows to the return electrode plate 5.
この高周波出力は負荷特性を有しており、この負荷特性
においてピークの出力を発生するときの負荷値、即ち最
適負荷Ｒ１は次式のように決定される。This high-frequency output has a load characteristic, and the load value at which the peak output is generated in this load characteristic, that is, the optimum load R1, is determined as shown in the following equation.
Ｒ−Ｖ ／（２Ｐ ）
ｌ ＤＤＩ ｓ＋ａｘ但し、■９，１
は電源電圧で、ＰＩａｘは最大出力である。R-V / (2P) l DDI s+ax However, ■9,1
is the power supply voltage and PIax is the maximum output.
これにより、負荷がＲ１のときに、ある出力設定におけ
るピークの出力Ｐ。を発生する負荷特性は、第２図の実
線Ω１に示すような特性線図となる。Thereby, when the load is R1, the peak output P at a certain output setting. The load characteristics that generate this are shown in a characteristic diagram as shown by the solid line Ω1 in FIG.
負荷検出回路３から検出される負荷値が！Ｒ以下なら、
制御回路６が電源回路７に作用して電源電圧をｖ９，２
に変える。電源電圧がＶ８，２のときの最大出力を、電
源電圧がＶ。、１のときの最大出力Ｐ と同じく一定
にしておけば、最適負荷ｔａｘ
Ｒ２は
Ｒ−Ｖ ／（２Ｐ ）
２ ＤＤ２ ｗａｘ
（但し、Ｒ，＞Ｒ２）
となる。そして、最適負荷をＲ２としたとき、制御回路
６は、負荷特性ピーク出力がＰ。になるように信号発生
回路１を制御する。即ち、負荷の値が！Ｒ以下なら１つ
の設定出力において、負荷がＲ２のときにピーク出力が
Ｐ。となるような負荷特性が得られる。そこで、全ての
負荷値において第３図の実線ｇ２で示す負荷特性のよう
な双峰出力が発生されることになる。The load value detected by the load detection circuit 3 is! If it is less than R,
The control circuit 6 acts on the power supply circuit 7 to change the power supply voltage to v9,2.
Change to The maximum output when the power supply voltage is V8.2 is the maximum output when the power supply voltage is V. , 1, the optimum load tax R2 becomes RV/(2P) 2 DD2 wax (where R,>R2). When the optimum load is R2, the control circuit 6 has a load characteristic peak output of P. The signal generating circuit 1 is controlled so that In other words, the value of the load! If it is less than R, the peak output is P when the load is R2 for one set output. A load characteristic such as is obtained. Therefore, at all load values, a bimodal output like the load characteristic shown by the solid line g2 in FIG. 3 is generated.
以上説明したようにこの第１実施−１によれば、０級共
振利用の電力増幅回路２の電源電圧を制御回路６がある
負荷値ＩＲを境に電源回路７に働きかけて変更させるこ
とにより、２つのピーク出力をもった負荷特性の特性線
を生じさせることになる。従って、２つのピーク出力を
有する負６）Ｉ特性にすれば、ピーク出力が１つの負荷
特性よりも１つの設定出力において出力変動が少なくな
るから、それにより手技が行ない易くなる。As explained above, according to the first embodiment-1, the control circuit 6 acts on the power supply circuit 7 to change the power supply voltage of the power amplification circuit 2 using class 0 resonance at a certain load value IR. This results in a load characteristic curve with two peak outputs. Therefore, if the negative 6) I characteristic with two peak outputs is used, the output fluctuation will be smaller in one set output than in the case of one load characteristic with one peak output, thereby making the procedure easier to perform.
第４図と第５図は、本発明の第２実施例と第３実Ｍ！Ａ
例をそれぞれ示す高周波電気メス装置のブロック系統図
である。この第２実施例と第３実施例が上記第１実施例
と異なる点は、電力増幅回路として、０級共振利用のも
のに代えて第２実施例ではＢ級増幅のＤＥＰＰ ＜ダブ
ル−エンデイラド・ブツシュ・プル）を、第３実施例で
はＢ級増幅の５ＥＰＰ （シングル・エンデイラド・ブ
ツシュ・プル）を、それぞれ使用したことである。そし
て、電力増幅回路以外の各構成手段は、上記第１実施例
と全く同じであるので、上記第１実施例と同じ符号を付
してその説明を省略する。FIGS. 4 and 5 show the second embodiment of the present invention and the third actual M! A
FIG. 3 is a block system diagram of a high-frequency electric scalpel device showing examples. The difference between the second and third embodiments from the first embodiment is that instead of using a power amplification circuit that uses class 0 resonance, the second embodiment uses a DEPP <double-endeiraud power amplifier circuit that uses class B amplification. In the third embodiment, a class-B amplified 5EPP (single endowed bush pull) was used. Since each component other than the power amplifier circuit is completely the same as in the first embodiment, the same reference numerals as in the first embodiment will be given and the explanation thereof will be omitted.
第４図と第５図に示す第２実施例と第３実施例において
、ＶＤＤを電源電圧、ＰＩａＸを最大出力とすると、最
適負荷Ｒ５は第２実施例ではＲ−２Ｖ ２／Ｐ
Ｌ ＤＤ ｗａｘとなり、
第３実施例では
ＲＬ−ｖＤＤ ／８Ｐｌａｘ
となる。そして、この点を除けば、上記第２．第３実施
例における作用、効果は上記第１実施例におけるそれと
異なるところがない。In the second and third embodiments shown in FIGS. 4 and 5, if VDD is the power supply voltage and PIaX is the maximum output, the optimal load R5 is R-2V 2/P L DD wax in the second embodiment. Then,
In the third embodiment, it is RL-vDD/8Plax. And, except for this point, the above 2. The functions and effects of the third embodiment are the same as those of the first embodiment.
ところで、上記第１〜第３の各実施例において、前述の
負荷特性のピーク出力を与える負荷値の設定は、２つの
値に限定されるものでなく、例えば、連続的に電源電圧
を変えることにより３つ以上設けてもよいことは言うま
でもない。Incidentally, in each of the first to third embodiments described above, the setting of the load value that provides the peak output of the load characteristics described above is not limited to two values; It goes without saying that three or more may be provided.
以上説明したように本発明によれば、負荷検出回路で検
出したある設定負荷範囲で、制御回路が電源回路に作用
して電力増幅回路に給電する電源電圧を変えるようにし
たので、負荷特性におけるピーク出力を発生する負荷値
を複数にでき、これによって特性がより平坦になり、出
力灸動が少なくなるため、手技を行ない易くするメいう
顕皆な効果が発揮される。As explained above, according to the present invention, the control circuit acts on the power supply circuit to change the power supply voltage supplied to the power amplifier circuit within a certain set load range detected by the load detection circuit, so that the load characteristics A plurality of load values can be used to generate the peak output, which results in flatter characteristics and less output moxibustion, which has the obvious effect of making the procedure easier to perform.
第１図は、本発明の第１実施例を示す高周波電気メス装
置のブロック系統図、
第２図と第３図は、上記第１図における負荷特性で、Ｔ
５２図は負荷がＲ１のときにピーク出力Ｐｏを発生する
ような出力設定下の、第３図は、負荷がＲ１とＲ２のと
きにそれぞれピーク出力Ｐｏを発生するような出力設定
下の、それぞれにおける特性線図、
第４図と第５図は、本発明の第２．第３実施例をそれぞ
れ示す高周波電気メス装置のブロック系統図である。
１・・・・・・・・・信号発生回路
２・・・・・・・・・０級共振利用の電力増幅回路（電
力増幅回路）
３・・・・・・・・・負荷検出回路
６・・・・・・・・・制御回路
７・・・・・・・・・電源回路
９・・・・・・・・・Ｂ級ＤＥＰＰの電力増幅回路（電
力増幅回路）
１０・・・・・・８級５ＥＰＰの電力増幅回路（電力増
幅回路）FIG. 1 is a block system diagram of a high-frequency electric scalpel device showing a first embodiment of the present invention. FIGS. 2 and 3 show the load characteristics in FIG.
Figure 52 shows the output settings that generate the peak output Po when the load is R1, and Figure 3 shows the output settings that generate the peak output Po when the loads are R1 and R2. The characteristic diagrams in FIGS. 4 and 5 are the characteristic diagrams in FIG. 2 of the present invention. FIG. 7 is a block system diagram of a high-frequency electric scalpel device showing a third embodiment. 1... Signal generation circuit 2... Power amplification circuit using class 0 resonance (power amplification circuit) 3... Load detection circuit 6 ...... Control circuit 7... Power supply circuit 9... Class B DEPP power amplifier circuit (power amplifier circuit) 10...・・Class 8 5EPP power amplification circuit (power amplification circuit)
Claims (1)
号により駆動され、焼灼出力を発生する電力増幅回路と
、 この電力増幅回路に電力を供給し、電源電圧が可変な電
源回路と、 出力の状態から負荷を検出する負荷検出回路と、負荷検
出回路で検出された負荷が予め設定された値になったと
きに上記電源回路に作用して電源電圧を変化させ、最大
出力を一定にするよう最適負荷を変え、負荷特性におい
てピーク出力を発生する負荷値を変える機能と、信号発
生回路の出力を制御する機能を有する制御回路と、 を具備したことを特徴とする高周波電気メス装置。(1) A signal generation circuit that generates a high-frequency signal, a power amplifier circuit that is driven by the high-frequency signal and generates an ablation output, a power supply circuit that supplies power to this power amplifier circuit and whose power supply voltage is variable, A load detection circuit detects the load based on the state, and when the load detected by the load detection circuit reaches a preset value, it acts on the power supply circuit to change the power supply voltage and keep the maximum output constant. A high-frequency electric scalpel device comprising: a control circuit having a function of changing an optimum load and a load value that generates a peak output in load characteristics; and a control circuit having a function of controlling an output of a signal generation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1135431A JP2604035B2 (en) | 1989-05-29 | 1989-05-29 | High frequency electric scalpel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1135431A JP2604035B2 (en) | 1989-05-29 | 1989-05-29 | High frequency electric scalpel device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0352A true JPH0352A (en) | 1991-01-07 |
| JP2604035B2 JP2604035B2 (en) | 1997-04-23 |
Family
ID=15151563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1135431A Expired - Fee Related JP2604035B2 (en) | 1989-05-29 | 1989-05-29 | High frequency electric scalpel device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2604035B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000041992A (en) * | 1998-07-30 | 2000-02-15 | Olympus Optical Co Ltd | Electric surgical instrument |
| US6600196B2 (en) * | 2000-01-13 | 2003-07-29 | International Business Machines Corporation | Thin film transistor, and manufacturing method thereof |
-
1989
- 1989-05-29 JP JP1135431A patent/JP2604035B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000041992A (en) * | 1998-07-30 | 2000-02-15 | Olympus Optical Co Ltd | Electric surgical instrument |
| US6600196B2 (en) * | 2000-01-13 | 2003-07-29 | International Business Machines Corporation | Thin film transistor, and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2604035B2 (en) | 1997-04-23 |
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