JP2575953C - - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric scalpel apparatus for driving an electric scalpel with a high-frequency current to a living body. 2. Description of the Related Art An electric scalpel is generally intended for surgical invasion by high-frequency current, and technically, (1) electrocoagulation (Coagulation), (2) electrocutting (Cutting), (3) It performs mixing (coagulation and incision). When these three technical modes are applied to a living body, the tissue change and the course of treatment of the living body have the same properties, and the feature thereof is that the amount of bleeding and the absorption of blood from the wound are small. [0003] Such an electric scalpel has been widely used in recent years for performing polyp excision and hemostasis while observing the inside of a body cavity of a living body using an endoscope apparatus. [0004] This process will be described below. Early endoscopes were primarily used for diagnosis. However, recent advances in technology have made it possible to treat lesions discovered during diagnosis as well as endoscopes using an endoscope. In particular, it is essential for endoscopy to remove and collect polyps and determine whether the polyps are cancerous or non-cancerous. An electric scalpel is useful for removing polyps in this endoscopy. In this electric scalpel, a high-frequency current generated by a power supply device for an electric scalpel is caused to flow through a snare passed through a forceps channel with an endoscope, and a polyp can be cut off by the snare. However, conventionally, in the case of a power supply device for an electric scalpel that drives an electric scalpel, since a current waveform of a high-frequency current flowing through a snare is created, a monostable signal is generated in a signal generator. A configuration in which a multivibrator is provided is employed, and in this case, the following inconvenience occurs. That is, since the monostable multivibrator provided in the signal generating section generates a current waveform by a combination of a resistor and a capacitor, the current waveform cannot be generated as desired. In addition, since the waveform is adjusted mainly with a variable resistor, it takes a lot of time to adjust with an electric scalpel that uses multiple monostable multivibrators in response to differences in surgical procedures such as incision, mixing, and coagulation. Occurred. In addition, since the power supply device for an electric scalpel equipped with a signal generating unit using a plurality of monostable multivibrators has a large-scale configuration, there is a request that the endoscope device and the power supply device for the electric scalpel be integrated into one unit. There was also the problem of not being able to meet. Furthermore, in the case of a power supply device for an electric scalpel provided with a signal generation section using a monostable multivibrator as a waveform forming source, there is a drawback that a generated waveform is not constant, so that the reliability as the power supply device is low. It was low. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a signal generation function capable of generating a current waveform of a high-frequency current flowing through a snare accurately and with a small number of operations (by an operator). An object of the present invention is to provide an electrosurgical device having the same. [0008] In order to achieve the above object, the present invention relates to an electrosurgical apparatus provided with a power supply device for driving an electrosurgical knife with a high-frequency current according to a predetermined surgical procedure. A first memory for storing digital data corresponding to the pulse width of each waveform of the high-frequency current according to the equation
Storage means, a second storage means for storing digital data corresponding to a mode waveform of a high-frequency current corresponding to the above-mentioned technique, and each digital data stored in the first and second storage means is appropriately read out. And a signal generating means for generating various current waveforms corresponding to an electrosurgical scalpel operation method. According to the configuration of the present invention, the signal generating means stores each data corresponding to the pulse width and the mode waveform of each waveform of the high-frequency current according to the electrosurgical technique of the electric knife stored in the storage means. Both are configured to be digital data and stored in a storage means such as a ROM. Thus, a high-frequency current having a current waveform accurately created can be passed through the electrode of the electric scalpel while being formed in a small size, and the electric scalpel can be driven in a desired operation mode. FIG. 1 is a configuration diagram schematically showing an endoscope apparatus to which a power supply device 20 for an electric scalpel according to the present invention is applied. The endoscope apparatus is a single unit in which the power supply device 20 for an electric scalpel to which the present invention is applied is incorporated into the endoscope apparatus main body 1, and is connected to the endoscope apparatus main body 1. The snare 5 is passed through the forceps channel 4 of the endoscope 3
Is led to the tip of. The snare 5 is electrically connected to the electric scalpel power supply 20 so that power can be supplied from the electric scalpel power supply 20. In addition,
Reference numeral 6 denotes a return electrode attached to the living body P. The return electrode 6 and the snare 5 can form a closed circuit with the electric scalpel power supply device 20 through the living body P. The electric scalpel power supply device 20 includes an electric scalpel signal generator 4 as shown in FIG.
0, a driver 42, an output transformer 44, and an interface 46, and are driven and controlled by using the system controller 11 of the endoscope apparatus main body 1 in FIG. 1 as a control center of the entire system. The system controller 11 has a foot switch 12
Is added. As shown in FIG. 3, the electric scalpel signal generator 40 in each section of the electric scalpel power supply device 20 includes an oscillator 13, a first counter 14, a second counter 15, and a third counter 1.
6, a first ROM 17, a second PROM 18, and an AND circuit 19. The oscillator 13 is a high-frequency oscillator, such as a crystal oscillator or a ceramic oscillator. When the output of the oscillator 13 is applied to the first counter 14, a counter output having a waveform as indicated by a symbol A in FIG. The second counter 15 is, for example, a 4-bit counter. One output terminal of the second counter 15 is connected to, for example, lower 4 address bits of the first PROM 17, and the other output terminal transmits a carry bit to the third counter 16. Connected so that you can. Here, the upper 5 to 8 bits of the first PROM 17 are connected so that a power signal for output power setting is added from the system controller 11 of FIG. On the other hand, if ROM data as shown in FIG.
The PROM outputs as shown by .about.P are obtained. However, since output 0 is omitted, there are 15 types of outputs. In FIG. 5, the lower 4 bits of the address are shown on the horizontal axis, and the upper 4 bits are shown on the vertical axis. The upper 4 bits are data for selecting the pulse width as can be seen from FIG. It is. For example, when the address 3 is selected by the output power setting signal in the upper address on the vertical axis in FIG. 5, the output “1” from the first PROM 17 up to the address 00 to 02 on the lower axis on the horizontal axis.
Is output. The output is "0" for the remaining addresses 03 to 0F. That is, this first
The waveform of the power output from the PROM 17 corresponds to "D" in FIG.
Therefore, as described above, the width of the rectangular output is equal to the output power setting pulse, in other words,
It is determined by the upper 4 bits of address data of the first PROM 17. Also,
The output power setting signal has 4 bits in 16 steps, but may have a different number of bits. On the other hand, the third counter 16 here is, for example, a 5-bit counter, and its output terminal is connected to the lower 5 address bits of the second PROM 18. 2 are connected so that an output mode setting signal is added from the system controller 11 of FIG. Further, one output terminal of the second PROM 18 is connected to the third counter 1
6 reset terminal. As a result, if the ROM data as shown in FIG. 6 is previously written in the second PROM 18 as in FIG.
From M18, a waveform as shown in FIG. 7 is obtained. In FIG. 6, the lower 5 bits of the address are shown in two stages on the horizontal axis, and the upper 3 bits are shown in one stage on the vertical axis.
The data of addresses 34, 54 and 94 is 2 in the second bit of the output.
This is for resetting the counter 16. FIG. 7 is a timing chart showing the operation of the second PROM 18. In the figure, “001” is given to the upper three bits of the address of the second PROM 18 in order to select BLEND 1 having both the incision and hemostasis functions, which are one of the surgical procedures. At this time, the item of BLEND1 in FIG. 6 is selected, and the waveform of BLEND1 in FIG. 7 is obtained. At this time, the address 2 in FIG. 6 is 2 for resetting the third counter 16 as described above, and the third counter 16 repeats counting until the count number reaches 20. Note that the number counted by the third counter 16 may be a number other than 20. Thus, the relationship between the output of the first PROM 17 and the output of the second PROM 19 corresponds to one clock in FIG. 7 and 16 clocks in FIG. While being sent to each output AND circuit 19 of the first PROM 17 and the second PROM 18, when an input operation is performed by the foot switch 12 shown in FIG. 2, the operation is performed from the system controller 11 of FIG. O
A power-on signal for N is sent to the AND circuit 19. Therefore, when AND is established in the AND circuit 19, a coagulation (CONG) waveform output is generated from the AND circuit 19 at the timing shown in FIG. 8, for example, and the driver 42 shown in FIG. The driver 42 allows the output transformer 44 to supply a high-frequency current to the snare 5 with a current waveform corresponding to an electrosurgical technique. FIG. 8 shows the output clock 2 of the second PROM 18 in FIG.
A part of the 0 pulse is enlarged and displayed. The high-frequency waveform actually output from the driver 42 is a set of 20 pulses repeated. However, when the upper bits of the first PROM 17 and the second PROM 18 are not selected, in other words, when the mode or the like is not specified, each PR in FIGS.
As can be seen from the OM data, the output becomes 0, the high-frequency output is lost, and the danger of malfunction of the electric scalpel is eliminated, which is safe. The first PROM 17 and the second PRO
It goes without saying that the contents of M18 are not fixed to the contents shown in FIGS. 5 and 6 and can be variously changed. As described above, in the present embodiment, the signal generating unit 7 that can appropriately generate digital data written in the first PROM 17 and the second PROM 18 and create various current waveforms in accordance with the electrosurgical technique is used. Since the power unit 20 for electric scalpel is incorporated in the power supply unit 20 for electric power, the power unit 20 for electric scalpel is downsized. As a result, as shown in FIG. be able to. The electric scalpel signal generator 40, which is a main part of the present embodiment, has the functional configuration shown in the block diagram of FIG. 3. The connection relationship is as shown in FIG. Here, the output frequency of the oscillator 13: 6.854H
z, and the first counter 14 is omitted. Other components are indicated by the same reference numerals as those in FIG. Further, the electric scalpel signal generator 40 can be replaced with an electric scalpel signal generator 50 or an electric scalpel signal generator 60 having a functional configuration shown in each block diagram of FIG. 11 or FIG. The electric scalpel signal generator 50 shown in the block diagram of FIG.
4 shows an example in which control RAM data is set in each of the RAMs 52 and 54 from the system controller 11 via the CPU interface 56, while RAM data indicating an output power setting signal is set in the RAM 52. The RAM data indicating the mode selection signal is set in the RAM 54.
A high-frequency signal of 12,288 MHz oscillated from the oscillator 58 is supplied to the first counter 5
At 9 the countdown is reduced to ２ and becomes 6,144 MHz. When the output of the first counter 59 is applied to the second counter 15, the 4-bit data of the second counter 15 is sent to the RAM 52, while the carry bit of 384 MHz is sent to the second counter 16. Further, a power ON signal from the system controller 11 is applied to the AND circuit 19. In this connection, the RAMs 52 and 54 are the first PROM of FIG.
17, functions similarly to the second PROM 18, and the output of the AND circuit 19 is sent to the driver 42 in FIG. The electric knife signal generating section 60 shown in the block diagram of FIG. 12 shows an example using one PROM 62. A mode selection signal and an output power setting signal from the system controller 11 are stored in the PROM 62 by ROM data. Is set as Further, since the oscillator 58, the first counter 59, the second counter 15, and the third counter 16 are provided in the same relationship as in FIG. 1, the power ON signal from the system controller 11 is applied to the AND circuit 19. In other words, the PROM 62 is
Will function in the same manner as the combination of the first PROM 17 and the second PROM 18. These signal generators for the electric scalpel are merely examples of the embodiments, and the present invention is not limited to the technical scalpel of the present invention even if an electric scalpel signal generator having a different functional configuration from the respective examples is applied. It does not depart from the scope. Next, another embodiment will be proved with reference to FIG. FIG. 13 shows an electronic endoscope device 200.
4 is a block diagram showing the configuration of the function of one embodiment. The electronic endoscope apparatus 200 performs image processing based on a video signal obtained from the endoscope 201 in a state where the guide portion of the endoscope 201 is introduced into the body cavity of the subject P. The basic configuration is such that the system controller 240 is used as a control center to compose an observation image by the unit 202 and display the image on the color monitor 210 in color. .
However, the system controller 240 also functions as a control center of the electric scalpel power supply device 100 described later. In this basic configuration, as each component of the power unit 100 for an electric scalpel, an electric scalpel including a snare 5 and a counter electrode plate 6, a power supply 107 for an electric scalpel for supplying a high-frequency current to the electric scalpel, Electric scalpel controller 10 for driving and controlling power supply 107
8. A mode switch 120 and the like provided on the display panel 109 for performing an operation for operating the electric knife controller 108 are added, and the electric knife power supply device 100 is integrated with the electronic endoscope device 200. One unit. Further, the system controller 240 which is a control center of the whole system has a function as a mode display procedure 110. This mode display means 110
When the mode selection switch 120 is operated, a signal indicating the operation state is received from the electric scalpel controller 108, and the mode selection switch 120 recognizes whether the operation is the incision (mixing) switch 120A or the coagulation switch 120B. Then, based on this recognition, a teaching control signal for displaying the color of the corresponding mode on the color monitor 210 is sent to the image processing unit 103. Therefore, if the mode of the mode selection switch 120 is incision (mixing), the color monitor 2
A color display of “yellow” is made on the color monitor 10, and if it is solidified, a color monitor 210 is displayed.
A color display of “blue” is made on the top. A combination of the image processing unit 202 and the mode display unit 110, which is a main part of the present embodiment, is illustrated as a block diagram as shown in FIG. Then, in the image processing unit 202, the video signal obtained by the solid-state imaging device 204 is amplified by a preamplifier 202 A, then applied to an A / D converter 202 B, and is converted into a digital video signal. This digital video signal is temporarily stored in the first register 202C and then sequentially written to the frame memory 202D. Frame memory 202
Is temporarily stored in the second register 202F through gamma processing of the gamma circuit 202E, and then analog R (red), G (green) and B (green) by the D / A converter 202G. (Blue) video signal is transmitted to the color monitor 210. On the other hand, in the mode display means 110, the TV synchronization generator 110A
The D signal is sent to the vertical address counter 110B, and the 4FSC component is sent to the horizontal address counter 110C. Then, the vertical address counter 110B
And the horizontal address from the horizontal address counter 110C are set in the character code memory 110D. The set contents of the character code memory 110D are read out to the character generator 110E under the control of the CHR signal of the system controller 240. The character generator 110E indicates the set contents read from the character code memory 110D in the color table 110F.
40, the D / A of the image processing unit 202 associated with the designated color data (Y, B).
It can be added to the converter 202G. Therefore, as described above, the mode of the mode selection switch 120 in FIG.
In the case of “mixing”, the color display of “yellow” is made on the color monitor 210, and in the case of solidification, the color display of “blue” is made on the color monitor 210. FIG. 15 shows a system controller 240 having the function of the mode display means 110.
The image processing unit 202 is controlled by the CPU and an example of a screen mode displayed on the color monitor 210 is shown. In the screen mode shown in FIG. 15, the fixed area character portion 220 on the right side of the screen displays a large number of characters, and is not suitable as a position for displaying a surgical method such as an electric scalpel. Therefore, in the present embodiment, a surgical procedure is displayed on the upper left portion of the screen in the arbitrary character section 230 where no characters are displayed. In the “cutting mode”, as shown in the figure,
"ING" is displayed in yellow and "Mixed mode" (not shown)
In the case of, the character "BLEND" was displayed in yellow in color, and in the case of "coagulation mode", the character "COAUGULATION" was displayed in blue. From the above, according to the present embodiment, the surgical mode of the electric scalpel designated by the mode switch 120 on the display panel 109 can be recognized on the color monitor 210 by color characters, so that Erroneous operation can be prevented beforehand. Further, a combination of color characters and color graphics can be performed by displaying a mode waveform in color along with characters for each mode as in a display A, a display B, and a display C in FIG. In addition, it is obvious that, without adding a color, each mode may be displayed with a pictorial symbol representing the mode. As described above, according to the present invention, the signal generator capable of appropriately reading the digital data written in the storage means and creating various current waveforms corresponding to the electric scalpel operation method. Is provided, the current waveform of the high-frequency current flowing through the electrode of the electric knife can be created accurately and with a small number of operations.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram schematically showing an endoscope apparatus to which a power supply device for an electric scalpel according to the present invention is applied. FIG. 2 is a block diagram showing a detailed configuration of a power supply device for an electric scalpel. FIG. 3 is a block diagram showing a detailed configuration of a first example of a signal generator for an electric scalpel. FIG. 4 is a timing chart showing an operation of a first PROM. FIG. 5 is a diagram showing an example of data written in a first PROM. FIG. 6 is a diagram showing an example of data written to a second PROM. FIG. 7 is a timing chart showing the operation of the second PROM. FIG. 8 is a timing chart showing the operation of the AND circuit. FIG. 9 is a circuit diagram showing a part of a preferred circuit configuration example of the electric scalpel signal generation unit. FIG. 10 is a circuit showing another part of a preferred circuit configuration example of the electric scalpel signal generator. FIG. 11 is a block diagram illustrating a detailed configuration of a second example of the electric knife signal generation unit. FIG. 12 is a block diagram showing a detailed configuration of a third example of the electric scalpel signal generator. FIG. 13 is a configuration diagram schematically illustrating an electronic endoscope apparatus. FIG. 14 is a block diagram illustrating a detailed configuration of an image processing unit and a mode display unit. FIG. 15 is a diagram illustrating an example of a display mode on a color monitor. FIG. 16 is a diagram showing a modification of the mode display. [Description of Signs] 20 Power supply device for electric knife 40 Electric knife signal generator 50 Electric knife signal generator 60 Electric knife signal generator 100 Power supply device for electric knife 110 Mode display means

Claims (1)

Claims: 1. An electric scalpel device provided with a power supply device for driving an electric scalpel with a high-frequency current according to a predetermined surgical procedure , wherein individual waveforms of the high-frequency current according to the surgical procedure are provided.
First storage means for storing digital data corresponding to the pulse width of the second <br/> storage means for storing digital data corresponding to the mode waveform of the high-frequency current in accordance with the operative procedure, these first An electric scalpel apparatus comprising: signal generating means for appropriately reading each digital data stored in the first and second storage means and creating various current waveforms corresponding to an electrosurgical technique. 2. The electrosurgical device according to claim 1, further comprising an endoscope device for observing the inside of a body cavity of the living body. 3. The electrosurgical device according to claim 2, wherein the endoscope device includes a main body and an endoscope scope, and the main body and the power supply device are formed as one unit. 4. The electric scalpel includes a snare fed from the power supply device and a return electrode attached to the living body, and the snare is electrically connected to the power supply device through a forceps channel of the endoscope. The electrosurgical device according to claim 3, wherein the electrosurgical device is connected.