JP3111214U - Electric knife with counter electrode - Google Patents

Abstract

The present invention aims to improve operability when a doctor handles an electric knife with a counter electrode plate, enhance alarm means in case of disconnection, and appropriately generate an output instruction sound during use. The challenge is to make it.
A pentode vacuum tube 3 and an oscillation coil 4 are connected to a main circuit A connected to an AC power supply 1 via a power supply side relay switch 22a and a transformer 2, and the operation coil relay switch is connected to the oscillation coil 4. The monopolar terminal 5, the bipolar terminal 6 and the counter electrode terminal 7 are connected via 5a, 6a and 7a. The control sub-circuit B connected to the AC power source 1 via the transformer 2a includes a first control relay switch 22b that can automatically control the power-side relay switch 22a and the operation-side relay switches 5a, 6a, and 7a. A second control relay switch 25 is interposed. Further, a light-emitting diode 26 and a buzzer 27 for disconnection warning are interposed in the sub circuit B, and the buzzer 27 also serves as a low-frequency output instruction buzzer.
[Selection] Figure 1

Description

  The present invention relates to an electric scalpel with a counter electrode plate in which a counter electrode plate is applied to the opposite side of a surgical part of a human body, and more particularly to an electric scalpel with a counter electrode plate in which a vacuum tube is provided in an electric circuit.

  In general, in an electric knife with a counter electrode plate, as shown in FIG. 3, a probe c having a monopolar or bipolar electrode member b attached thereto is connected to an output terminal a of a main apparatus M including a high-frequency power source, A counter electrode e is applied to the opposite surface of the affected part d of the living body P, and the counter electrode e is connected to a counter electrode terminal f of the main device M.

  In such a conventional electric knife with a counter electrode plate, an electric circuit as shown in FIG. 2 is incorporated in the main device M. In the main circuit A, an AC power source of AC 100 V (50/60 Hz) is used as the main circuit M. A monopolar terminal in a surgical probe is supplied with a high-frequency voltage obtained via a transformer 2 as a voltage adjusting means, a vacuum tube (pentode) 3 and an oscillation coil 4 via manual rotary switches S1, S2, S3. 5, bipolar terminal 6, counter electrode terminal 7, and operations for switching the connection are performed.

  In addition, an alarm buzzer 13 and a light emitting diode 14 as a monitor lamp are interposed in the sub circuit B connected to the power source 1 via a transformer 2a as an auxiliary voltage adjusting means and a bridge diode type rectifier 10. .

By the way, since the conventional electric knife with a counter electrode plate as described above is equipped with manual rotary switches S1, S2, and S3, it requires troublesome operation during use, and output indicating the state in use. No measures are taken for the instruction buzzer.
Japanese Patent Laid-Open No. 9-66058

  The problem to be solved by the present invention is to improve the operability when a doctor handles an electric knife with a counter electrode plate, enhance the alarm means in case of disconnection, and properly generate the output instruction sound during use It is to be able to do it.

  In order to solve the above-described problems, the electric knife with a counter electrode plate of the present invention is a high-frequency voltage obtained from an AC power source through a main voltage adjusting means, a vacuum tube and an oscillation coil to a surgical probe and a counter electrode plate via a relay switch. In an electric knife provided with a main circuit to be applied, a power supply side relay switch interposed between the AC power supply and the main voltage adjusting means, and between the oscillation coil, the surgical probe and the counter electrode plate, respectively A first relay for performing automatic opening / closing control of the power supply side relay switch in a control subcircuit connected to the AC power supply via a subvoltage adjusting means and a bridge diode type rectifier. A control relay switch and a second control relay switch for performing automatic opening / closing control of the surgical relay switch are three. It is characterized by being interposed with child ballast.

  In the electric knife with a counter electrode plate of the present invention, in the control sub-circuit, a backflow prevention diode transistor is provided in parallel with each of the first control relay switch and the second control relay switch. It is a feature.

  Further, the electric knife with a counter electrode plate of the present invention is provided with a light emitting diode and an alarm buzzer as an alarm monitor lamp that operates when the main circuit is disconnected in the control sub-circuit. It is characterized by that.

  The electric knife with a counter electrode plate of the present invention is characterized in that the alarm buzzer also serves as an output instruction buzzer that generates an output instruction sound having a lower volume than an alarm sound that the buzzer can generate. .

  In the electric knife with a counter electrode plate of the present invention described above, the power supply side relay switch interposed between the AC power supply and the main voltage adjusting means in the main circuit is interlocked with the first control relay switch in the control subcircuit. The surgical relay switch that is automatically and accurately controlled and is interposed between the oscillation coil, the surgical probe, and the counter electrode in the main circuit is also the second control relay switch in the control subcircuit. Since the opening / closing control is automatically and accurately performed in conjunction with the control, the operation required for the doctor is remarkably reduced.

  Further, in the control subcircuit, the first control relay switch and the second control relay switch are provided with a backflow prevention diode transistor in parallel, so that the operation reliability of each relay switch is improved. Will be significantly increased.

  Further, in the control subcircuit, if a light emitting diode as an alarm monitor lamp that operates when a disconnection occurs in the main circuit and an alarm buzzer are interposed, the disconnection state is accurately determined for the doctor. Therefore, safety measures can be taken quickly.

  Further, when the alarm buzzer in the control subcircuit also serves as an output instruction buzzer that generates an output instruction sound whose volume is lower than an alarm sound that can be generated by the buzzer, the overall apparatus can be simplified. In operation, the operating state of the apparatus can be confirmed by a low-temperature output instruction sound with less harshness from the buzzer during use, and the doctor can continue the operation with the apparatus with peace of mind.

  The electric knife with a counter electrode plate of the present invention uses only Joule heat while suppressing arc discharge due to high frequency voltage as much as possible according to the purpose of the operation, and the high frequency output voltage for that purpose is peak voltage 350V at 200Ω load. , And an execution voltage of about 180 V, about 1/10 of a general electric knife. As a result, incision with little carbonization cauterization due to discharge, no tissue degeneration, and white boiled hemostatic coagulation is performed. Therefore, in order to pass a sufficient current necessary for incision and coagulation at a high frequency with a low voltage to the human body, a frequency 6.05 MHz which is significantly higher than that of a general electric knife is used so as to reduce the specific resistance of the human body.

  FIG. 1 shows an electric circuit incorporated in a main device of an electric knife with a counter electrode plate as one embodiment of the present invention, from an AC power source 1 of AC 100V 50/60 Hz to a power supply side relay switch 22a and main voltage adjusting means. In the main circuit A connected via the transformer 2 as a high frequency voltage obtained via the pentode vacuum tube 3 and the oscillation coil 4, the monopolar terminal 5 and the bipolar terminal 6 for the surgical probe and the terminal for the counter electrode Four sets of relay switches 5a, 6a, 7a, 7b are provided so that the voltage can be applied to the switch 7 or the connection thereof can be switched.

  Also, a power supply side relay for the main circuit A is connected to the control circuit B connected from the AC power source 1 via the transformer 2a and the bridge diode type rectifier 10 as the sub voltage adjusting means and the DC conversion smoothing circuit 10a. A first control relay switch 22b is provided so that automatic opening / closing control of the switch 22a can be performed, and a backflow prevention diode transistor 22b-1 for the switch 22b is provided in parallel.

  Further, the control subcircuit B is provided with a second control relay switch 25 for performing automatic opening / closing control of the relay switches 5a, 6a, 7a in the main circuit A, and for backflow prevention for the switch 25. A diode transistor 25-1 is juxtaposed. The operation side relay switch 7b in the main circuit A is for automatically stopping a buzzer 27 described later.

The control sub-circuit B is provided with a light emitting diode 26 as an alarm monitor lamp and an alarm buzzer 27 in order to notify the disconnection. The buzzer 27 increases the volume at the time of alarm and outputs an instruction. For use, it is wired so that the volume can be reduced.
Note that reference numeral 30 in FIG. 1 indicates a neon display lamp.

  In the control subcircuit B, the first control relay switch 22b and the second control relay switch 25 are interposed together with the three-terminal ballast 31.

  In the electric knife with a counter electrode plate of the above-described embodiment, the power supply side relay switch 22a interposed between the AC power supply 1 and the main voltage adjusting means 2 in the main circuit A is used for the first control in the control sub circuit B. Surgical relay switches 5a, 6a, and 7a that are automatically and accurately controlled in conjunction with the relay switch 22b and that are interposed in the main circuit A between the oscillation coil 4, the surgical probe, and the counter electrode plate. However, since the opening / closing control is automatically and accurately performed in conjunction with the second control relay switch 25 in the control sub-circuit B, the operation required for the doctor is remarkably reduced.

  In the control sub-circuit B, the first control relay switch 22b and the second control relay switch 25 are provided with the backflow prevention diode transistors 22b-1 and 25-1, respectively. The reliability of operation of the relay switches 22b and 25 is remarkably improved.

  Further, in the control sub-circuit B, a light-emitting diode 26 and an alarm buzzer 27 are provided as alarm monitor lamps that operate when a disconnection occurs in the main circuit A. It is possible to be notified accurately and to take safety measures promptly.

  In addition, the alarm buzzer 27 in the control sub-circuit B also serves as an output instruction buzzer that generates an output instruction sound whose volume is lower than the alarm sound that can be generated by the buzzer. In operation, the operating state of the apparatus can be confirmed by a low-volume output instruction sound from the buzzer 27 that is less harsh during use, and the doctor can continue the operation with the apparatus with peace of mind.

It is an electrical wiring diagram of the electric knife with a counter electrode plate as one embodiment of the present invention. It is an electrical wiring diagram which shows an example of the conventional electric knife with a counter electrode plate. It is explanatory drawing which shows the use condition of an electric knife.

Explanation of symbols

1 AC power supply 2 Transformer (main voltage adjustment means)
2a Transformer (sub-voltage adjustment means)
3 Vacuum tube 4 Oscillation coil 5 Monopolar terminal 5a Relay switch 6 Bipolar terminal 6a Relay switch 7 Counter electrode terminal 7a, 7b Relay switch
10 Bridge diode type rectifier
10a Smoothing circuit
13 Buzzer
14 Light-emitting diode
22a Power supply side relay switch
22b Relay switch for first control
22b-1 Backflow prevention diode transistor
25 Relay switch for second control
25-1 Back-flow prevention diode transistor
26 Light-emitting diode (monitor lamp)
27 Buzzer
30 Neon indicator lamp
31 Three-terminal ballast A Main circuit B Sub-circuit M Main device P Human body S1, S2, S3 Rotary switch a Output terminal b Electrode member c Probe d Diseased part e Counter electrode

Claims (4)

  In an electric knife having a main circuit for applying a high-frequency voltage obtained from an AC power source via a main switch, a vacuum tube and an oscillation coil to a surgical probe and a counter electrode, the AC power source and the main voltage are provided. A power-side relay switch interposed between the adjusting means and a surgical-side relay switch interposed between the oscillation coil and the surgical probe and the counter electrode; A first control relay switch for automatically opening and closing the power supply side relay switch and an automatic opening and closing control of the surgery side relay switch in the control subcircuit connected via the means and the bridge diode type rectifier The second control relay switch is interposed with a three-terminal ballast, with a counter electrode plate Electric knife.   2. The counter electrode plate according to claim 1, wherein in the control subcircuit, a backflow prevention diode transistor is provided in parallel with each of the first control relay switch and the second control relay switch. With electric scalpel.   3. The control sub-circuit includes a light-emitting diode as an alarm monitor lamp that operates when a disconnection occurs in the main circuit and an alarm buzzer, according to claim 1 or 2. The electric knife with the described counter electrode plate.   The electric knife with a counter electrode plate according to claim 3, wherein the alarm buzzer also serves as an output instruction buzzer that generates an output instruction sound having a lower volume than an alarm sound that can be generated by the buzzer. .

Images