JP2002000616A - Electric operating equipment and device that controls the required outputting time - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric operating equipment that easily and accurately controls the time for outputting high frequency that energizes the tissue of a living body. SOLUTION: This electric operating equipment 1 is composed of the main body of an electric operating equipment 10 and a device 20 connected with the main body of an electric operating equipment 10 for controlling the high frequency to be outputted from the main body of an electric operating equipment 10. The device that controls the output 20 is connected with a fit switch 30. The device for controlling the output 20 has a switching detection circuit 21 that detects the on/off state of a fit switch 30 connected with a fit switch connection 21a and outputs the detecting signals to comply with its on state, a timer circuit 22 measuring the specified time from the start of signals based on the detection signals outputted from the switching detection circuit 21 and a relay circuit 23 that closes the contacts of an output terminal 23a over the specified length of time based on the period of time measured by the timer circuit 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrosurgical device for incising or coagulating a living tissue by applying a high frequency to living tissue, and more particularly, to easily and reliably output time of a high frequency applied to living tissue. The present invention relates to an electrosurgical device that can be controlled at a high speed and an output time control device used for the electrosurgical device.

[0002]

2. Description of the Related Art Conventionally, as an electrosurgical device of this kind,
2. Description of the Related Art There is known an electrosurgical device that turns on / off a high-frequency output supplied to a living tissue in conjunction with turning on / off an external switch such as a foot switch or a hand switch. Generally, in such an electrosurgical instrument, a high frequency is output only while a foot switch or a hand switch, which is an external switch, is stepped down or pressed.

[0003]

By the way, in the case of a surgical operation under an endoscope or a microscope, a high frequency is applied to a living tissue for a predetermined short time due to a restriction of a visual field or the like. In many cases, the approach is to go. Also,
In the case of a surgical operation under an endoscope or a microscope, a foot switch is generally used.

[0004] However, it is generally very difficult to operate an external switch (especially a foot switch) for a predetermined short period of time. There is a problem that there is a possibility that it will be.

The present invention has been made in view of the above points, and an electrosurgical device capable of easily and surely controlling the output time of a high-frequency current applied to a living tissue, and an output time control used therein. It is intended to provide a device.

[0006]

According to a first aspect of the present invention, there is provided a switch detecting means for detecting an on / off state of an external switch and outputting a detection signal corresponding to the on state, and the switch Timer means for measuring a predetermined set time from the start of the signal based on the detection signal output from the detection means, and a high-frequency output for outputting a high frequency for the predetermined set time based on the time measured by the timer means Means for providing an electrosurgical device.

According to a second aspect of the present invention, there is provided an output time control device which is connected to an electrosurgical device main body for outputting a high frequency and controls an output time of a high frequency output from the electrosurgical device main body. A switch detecting means for detecting an on / off state of the switch and outputting a detection signal corresponding to the on state; and a predetermined set time from the signal start time based on the detection signal output from the switch detection means. An output time control device is provided, comprising: timer means for measuring time; and relay means for operating the electrosurgical instrument main body for the predetermined set time based on a result of the time measurement by the timer means.

In the first and second solving means, the timer means includes a waveform shaping circuit for shaping a waveform of a detection signal output from the switch detecting means, and a detection signal shaped by the waveform shaping circuit. On the basis of the,
A preset timer circuit for outputting an output signal for a predetermined set time from the signal start point, and the high frequency output means preferably outputs a high frequency in accordance with the output signal output from the preset timer circuit. Further, the timer means further includes an OR circuit which receives an output signal output from the preset timer circuit and a detection signal output from the switch detection means as inputs and outputs an output signal corresponding to the logical sum. Preferably, the high frequency output means outputs a high frequency according to an output signal output from the OR circuit. Further, it is preferable that the timer unit further includes a mode switch for turning on / off an input of the detection signal output from the switch detection unit to the OR circuit.

According to the present invention, since the high frequency is output for a predetermined time in conjunction with the operation of the external switch, the output time of the high frequency applied to the living tissue can be easily and reliably controlled. For this reason, it is possible to effectively prevent the living tissue from being unnecessarily supplied with high frequency due to an erroneous operation of the external switch or the like.

Further, according to the present invention, an OR circuit is provided in the timer circuit, and the output signal output from the preset timer circuit and the detection signal output from the switch detection circuit are input to correspond to the OR operation. By outputting the output signal, when the time during which the external switch is depressed is longer than a predetermined time, the output signal can be output only during the time when the external switch is operated. The operation and effect described above can be obtained while maintaining the operability when the switch is operated for a long time as before.

Further, a mode switch is provided between the switch detection circuit and the OR circuit, and an external switch is operated by turning on / off the input of the detection signal output from the switch detection circuit to the OR circuit. The output signal is output for a predetermined time regardless of the time the external switch is operated, and the time the external switch is depressed In the case where the time is longer than the set time, the mode in which the output signal is output only during the time the external switch is stepped down can be appropriately switched.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views for explaining an embodiment of an electrosurgical instrument according to the present invention. In this embodiment, a foot switch type electrosurgical device generally used in a surgical operation or the like under an endoscope will be described as an example.

As shown in FIG. 1, an electrosurgical device 1 is used for incising and coagulating a living tissue by applying a high frequency to the living tissue.
0, and an output time control device 20 connected to the electrosurgical device main body 10 and controlling the output time of the high frequency output from the electrosurgical device main body 10. Note that a foot switch (external switch) 30 is connected to the output time control device 20. The foot switch 30 has an incision,
Switches for coagulation and bipolar are provided respectively.

Here, the electrosurgical instrument body 10 has a high frequency generating circuit 13, a power amplifying circuit 14, and an output circuit 15, and outputs a high frequency from an output terminal 15a of the output circuit 15. Further, the electrosurgical instrument main body 10 includes a switch detection circuit 11, a control circuit 12 for controlling the high-frequency generation circuit 13 and the power amplification circuit 14 based on the detection signal output from the switch detection circuit 11, and a control circuit 1
2 connected to the display circuit 18.
Here, each circuit includes a commercial power supply 16 and a power supply circuit 17.
To supply necessary power. The electrosurgical instrument body 10 can be used alone as an electrosurgical instrument. The switch detection circuit 11 includes a footswitch connection port 11a for connecting a footswitch and a handswitch, which are external switches, and a handswitch. 11b is provided.

On the other hand, the output time control device 20 detects an on / off state of the foot switch 30 connected to the foot switch connection port 21a and outputs a detection signal corresponding to the on state of the switch (a switch detection circuit). means)
A timer circuit (timer means) 22 for measuring a predetermined set time (for example, 0.5 to 5 seconds) from the start of the signal based on the detection signal output from the switch detection circuit 21; And a relay circuit (relay means) 23 for closing the contact of the output terminal 23a for the predetermined set time based on the time measurement result. The output terminal 23a of the relay circuit 23 is connected to the foot switch connection port 11a of the electrosurgical instrument main body 10, and controls the operation / non-operation of the electrosurgical instrument main body 10 with the opening and closing of the contact of the output terminal 23a. You can do it. An output time setting circuit 26 is connected to the timer circuit 22 so that the set time measured by the timer circuit 22 can be input from outside. Each circuit is supplied with necessary power from a commercial power supply 24 and a power supply circuit 25.

FIG. 2 is a block diagram showing details of the timer circuit 22 shown in FIG. As shown in FIG. 2, the timer circuit 22 includes a waveform shaping circuit 31 for shaping the waveform of the detection signal output from the switch detection circuit 21, and a signal based on the detection signal shaped by the waveform shaping circuit 31. A preset timer circuit 32 that outputs an output signal for a predetermined set time from the start time. The timer circuit 22 includes a preset timer circuit 32
And an output signal output from the switch detection circuit 21 and a detection signal output from the switch detection circuit 21. A mode switch 33 is provided between the switch detection circuit 21 and the OR circuit 34 to turn on / off the input of the detection signal output from the switch detection circuit 21 to the OR circuit 34.

In the electrosurgical device 1 shown in FIG. 1, high-frequency output means is constituted by the relay circuit 23 of the output time control device 20 and the electrosurgical device main body 10, and the high frequency output means is provided by the timer circuit 22 of the output time control device 20. According to the output signal, a high frequency is output from the output terminal 15a of the output circuit 15 of the electrosurgical instrument body 10 for a predetermined set time.

Next, the operation of the present embodiment having such a configuration will be described.

In the electrosurgical device 1 shown in FIG. 1, a practitioner who performs a surgical operation has a foot switch 30 for incision,
Step down on one of the coagulation and bipolar switches.

Here, the ON / OFF state of the foot switch 30 is detected by the switch detection circuit 21 of the output time control device 20, and a detection signal corresponding to the ON state is sent to the timer circuit 22.

In the timer circuit 22, based on a detection signal output from the switch detection circuit 21, a predetermined set time is counted from the start of the signal.

More specifically, as shown in FIG. 2, in the timer circuit 22, the waveform of the detection signal output from the switch detection circuit 21 is shaped by a waveform shaping circuit 31, and then the preset timer circuit 32 Based on the detection signal shaped by the waveform shaping circuit 31, an output signal is output for a predetermined set time from the start of the signal. Note that the preset timer circuit 3
2, a predetermined set time is input in advance by the output time setting circuit 26, and the output is set until the predetermined set time elapses from the rising point (signal start time) of the detection signal shaped by the waveform shaping circuit 31. A signal is output (see FIG. 3A). The output signal output from the preset timer circuit 32 and the detection signal output from the switch detection circuit 21 are both sent to an OR circuit 34, and the OR operation of the two signals is performed by the OR circuit 34. Is sent to the relay circuit 23 as an output signal.

Here, the timer circuit 22 switches the mode switch 33 between two modes (single mode (S) and OR mode) when the time during which the foot switch 30 is depressed is longer than a predetermined time. (O)).

In the single mode (S) in which the mode switch 33 is opened, an output signal is output for a predetermined time regardless of the time the foot switch 30 is depressed, and the foot switch 30 is depressed. Even when the time is longer than a predetermined set time, an output signal is output for a predetermined set time (see FIG. 3B). On the other hand, in the OR mode (O) in which the mode switch 33 is closed, if the time during which the foot switch 30 is depressed is longer than a predetermined time, the output is performed only during the time when the foot switch 30 is depressed. A signal is output (Fig. 3 (c)
reference).

In the relay circuit 23, the contact of the output terminal 23a is closed and opened based on the output signal output from the timer circuit 22, and only while the contact of the output terminal 23a is closed is the electric surgical instrument main body 10 closed. The foot switch connection port 11a is closed. Thereby, the electrosurgical instrument main body 1
A high frequency is output from the output terminal 15a of the output circuit 15 for a predetermined time. When the contact of the output terminal 23a is opened after the lapse of the predetermined time, the output of the high frequency from the output terminal 15a of the output circuit 15 of the electrosurgical instrument body 10 is stopped.

As described above, according to the present embodiment, since the high frequency is output for a predetermined time in conjunction with the stepping down of the foot switch 30, the output time of the high frequency applied to the living tissue can be easily and reliably set. Therefore, it is possible to effectively prevent the high frequency current from being applied to the living tissue more than necessary due to an erroneous operation of the external switch or the like.

According to the present embodiment, the OR circuit 34 is provided in the timer circuit 22 so that the output signal output from the preset timer circuit 32 and the switch detection circuit 2
Since the detection signal output from the input signal 1 and the output signal corresponding to the logical sum can be output, the foot switch 30 is depressed when the time during which the foot switch 30 is depressed is longer than a predetermined set time. The output signal can be output only during the time the foot switch 30 is stepped down, so that the operability in the case where the foot switch 30 is stepped down for a long time can maintain the operability as before, and can achieve the above-described effects.

Further, according to the present embodiment, the mode switch 33 is provided between the switch detection circuit 21 and the OR circuit 34, and the detection signal output from the switch detection circuit 21 is input to the OR circuit 34. Can be turned on / off, so that when the time during which the foot switch 30 is depressed is longer than a predetermined set time, the output is performed for a predetermined time regardless of the time during which the foot switch 30 is depressed. A mode in which a signal is output and a mode in which an output signal is output only during the time the foot switch 30 is stepped down when the time during which the foot switch 30 is stepped down is longer than a predetermined set time are appropriately switched. be able to.

According to the present embodiment, the output terminal 23a of the output time control device 20 can be connected to the foot switch connection port 11a of the electrosurgical instrument main body 10, so that the existing electrosurgical instrument main body 10 can be used. An electrosurgical device can be used.

In the above-described embodiment, the timer means is configured by hardware using the timer circuit 22. However, the present invention is not limited to this, and the timer means may be configured by software.

In the above embodiment, the case where the foot switch 30 is used as an external switch has been described as an example. However, the present invention is not limited to this, and a hand switch can be used as the external switch. In this case, the output terminal 23a of the output time control device 20 is connected to the hand switch connection port 11b of the switch detection circuit 11 shown in FIG. 1, and a hand switch is connected to the switch detection circuit 21 of the output time control device 20. It is good to connect.

Further, in the above-described embodiment,
Although the commercial power supplies 16 and 24 and the power supply circuits 17 and 25 are individually connected to the electrosurgical device 10 and the output time control device 20, respectively, the present invention is not limited to this. Commercial power supply and power supply circuit may be integrated.

Another Embodiment FIG. 4 is a view showing another embodiment of the electrosurgical instrument according to the present invention. In another embodiment shown in FIG. 4, the function of the timer circuit of the output time control device shown in FIGS. 1 and 2 is incorporated in the control circuit of the electrosurgical instrument. FIG.
In the other embodiment shown in FIG. 1, the same parts as those of the electrosurgical device shown in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 4, an electrosurgical instrument 1 according to another embodiment of the present invention comprises an electrosurgical instrument main body 1 shown in FIG.
0, the control circuit 12 is replaced with a control circuit 19 having a timer function. Electrosurgical device 1 shown in FIG.
Then, based on the detection signal output from the switch detection circuit 11, the control circuit 19 with a timer function measures a predetermined set time from the start of the signal, and
The high frequency is output from the output terminal 15a of the output circuit 15 for a predetermined set time based on the time measurement result. In the electrosurgical device 1 shown in FIG.
The switch detection circuit 11 constitutes switch detection means, and a part of the control circuit 19 having a timer function constitutes timer means. The commercial power supply 16, the power supply circuit 17, the high-frequency generation circuit 13, the power amplification circuit 14, the output circuit 15, A part of the control circuit 19 with a timer function constitutes a high-frequency output unit.

[0035]

As described above, according to the present invention, it is possible to easily and surely control the output time of the high frequency to be applied to the living tissue.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of an electrosurgical device according to the present invention.

FIG. 2 is a configuration diagram showing details of a timer circuit of the electrosurgical device shown in FIG. 1;

FIG. 3 is a time chart for explaining the operation of the electrosurgical device shown in FIGS. 1 and 2;

FIG. 4 is a configuration diagram showing another embodiment of the electrosurgical instrument according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 electrosurgical instrument 10 electrosurgical instrument main body 11 switch detection circuit 11a foot switch connection port 11b hand switch connection port 12 control circuit 13 high frequency generation circuit 14 power amplification circuit 15 output circuit 15a output terminal 16 commercial power supply 17 power supply circuit 18 display circuit 19 Control circuit with timer function 20 Output time control device 21 Switch detection circuit 22 Timer circuit 23 Relay circuit 23a Output terminal 24 Commercial power supply 25 Power supply circuit 26 Output time setting circuit 30 Foot switch 31 Waveform shaping circuit 32 Preset timer circuit 33 Mode switch 34 Logic Sum circuit

Claims (8)

[Claims] A switch detecting means for detecting an on / off state of an external switch and outputting a detection signal corresponding to the on state; and a signal starting point based on the detection signal output from the switch detecting means. An electrosurgical device comprising: timer means for measuring a predetermined set time from a predetermined time; and high frequency output means for outputting a high frequency for the predetermined set time based on the time measured by the timer means. 2. The timer means for shaping a waveform of a detection signal output from the switch detection means, and a predetermined time from the start of the signal based on the detection signal shaped by the waveform shaping circuit. 2. An electrosurgical device according to claim 1, further comprising: a preset timer circuit for outputting an output signal over a predetermined time period, wherein said high frequency output means outputs a high frequency in accordance with the output signal output from said preset timer circuit. . 3. An OR circuit which receives an output signal output from the preset timer circuit and a detection signal output from the switch detection means and outputs an output signal corresponding to the logical sum of the output signal and the detection signal. Have more,
The electrosurgical device according to claim 2, wherein the high-frequency output means outputs a high frequency according to an output signal output from the OR circuit. 4. The electrosurgery according to claim 3, wherein said timer means further comprises a mode switch for turning on / off an input of a detection signal output from said switch detection means to said OR circuit. vessel. 5. An output time control device connected to an electrosurgical device main body for outputting a high frequency and controlling an output time of the high frequency output from the electrosurgical device main body, wherein an on / off state of an external switch is detected. A switch detection unit that outputs a detection signal corresponding to the ON state; a timer unit that counts a predetermined set time from the signal start time based on the detection signal output from the switch detection unit; An output time control device, comprising: relay means for operating the electrosurgical instrument main body for the predetermined set time based on a time measurement result. 6. A timer shaping circuit for shaping a waveform of a detection signal output from the switch detecting means, and a timer based on the detection signal shaped by the waveform shaping circuit. A preset timer circuit for outputting an output signal over a predetermined time period, wherein the relay means operates the electrosurgical instrument main body in accordance with the output signal output from the preset timer circuit. Output time control device. 7. An OR circuit which receives an output signal output from the preset timer circuit and a detection signal output from the switch detection means and outputs an output signal corresponding to the logical sum of the output signal and the detection signal. Have more,
7. The output time control device according to claim 6, wherein the relay means operates the electrosurgical instrument main body in accordance with an output signal output from the OR circuit. 8. The output time according to claim 7, wherein said timer means further comprises a mode switch for turning on / off an input of said detection signal output from said switch detection means to said OR circuit. Control device.