Water injection type high frequency electric knife

Abstract

The utility model relates to medical apparatus and instruments technical field especially, it relates to a kind of water injection type high-frequency electric knife, including handle shell, booster water pump, insulated sheath, connecting pipe, electrode and electrode water outlet flow regulating mechanism in tubular shape;The proximal end of insulated sheath is installed on handle shell, the proximal end of connecting pipe is inserted into handle shell, the distal end of connecting pipe is inserted into insulated sheath, the proximal end of electrode is inserted into insulated sheath and is communicated with the distal end of connecting pipe, booster water pump is installed in handle shell, the proximal end of connecting pipe is communicated with the liquid outlet of booster water pump;Electrode water outlet flow regulating mechanism includes signal input component, first controller and driver installed on handle shell, signal input component is electrically connected with first controller, first controller is electrically connected with driver, driver is electrically connected with the motor of booster water pump. Water injection water pressure can be adjusted to adapt to different water injection or water spraying scene in operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a water-injection type high-frequency electrosurgical unit. Background Technology

[0002] A high-frequency electrosurgical unit (HFEMU) is an electrosurgical instrument that replaces mechanical scalpels for tissue cutting. It heats tissue by generating a high-frequency, high-voltage current at the tip of its effective electrode, achieving tissue separation and coagulation, thus achieving cutting and hemostasis. During use, a suitable neutral electrode plate is required. This plate is attached to a muscle-rich area of ​​the patient, guiding the current collected within the body back to the HFEMU and other instruments, forming a complete high-frequency circuit. This disperses the current during high-frequency surgery, reducing the risk of current concentration, safely collecting and delivering the current to the outside of the body, and protecting the patient's safety.

[0003] Currently, there is a water-injection type high-frequency electrosurgical unit with a water pump built into the handle. The water injection function of this unit is generally used to inject medical fluid into the submucosal cavity to elevate the lesion, thus facilitating its removal. However, in actual surgical procedures, bleeding is common after electrosurgical resection. When bleeding occurs, water spray is needed to flush away the blood clot and expose the bleeding point, which is then treated with an electrocoagulation electrode for hemostasis. The water pressure required for flushing the blood clot differs significantly from that required for submucosal injection. To enable the water injection function of this high-frequency electrosurgical unit to be applicable to both flushing the blood clot and submucosal injection, an improved water-injection type high-frequency electrosurgical unit is urgently needed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a water-injection type high-frequency electrosurgical unit that can adjust the water pressure to adapt to different water injection or spraying scenarios during surgery.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] This utility model provides a water-injection type high-frequency electrosurgical unit, including a handle housing, a booster pump, an insulating sheath, a connecting tube, a tubular electrode, and an electrode water flow rate adjustment mechanism. The proximal end of the insulating sheath is mounted on the handle housing, the proximal end of the connecting tube is inserted into the handle housing, and the distal end of the connecting tube is inserted into the insulating sheath. The proximal end of the electrode is inserted into the insulating sheath and communicates with the distal end of the connecting tube. The booster pump is mounted in the handle housing, and the proximal end of the connecting tube communicates with the outlet of the booster pump. The electrode water flow rate adjustment mechanism includes a signal input component, a first controller, and a driver mounted on the handle housing. The signal input component is electrically connected to the first controller, the first controller is electrically connected to the driver, and the driver is electrically connected to the motor of the booster pump.

[0009] Optionally, the signal input component includes a stop water injection button, a water spray flushing button, and a submucosal water injection button disposed on the handle housing. The stop water injection button is used to provide a signal to stop water injection, the water spray flushing button is used to provide a flow rate signal for the electrode to spray water to flush the blood clot, and the submucosal water injection button is used to provide a flow rate signal for submucosal water injection. The stop water injection button, the water spray flushing button, and the submucosal water injection button are respectively electrically connected to the first controller.

[0010] Optionally, the signal input component includes a stop water injection button, a first water spray flushing button, a second water spray flushing button, and a submucosal water injection button disposed on the handle housing. The stop water injection button is used to provide a signal to stop water injection, the first water spray flushing button is used to provide a low flow rate signal for electrode water spray flushing of blood clots, the second water spray flushing button is used to provide a high flow rate signal for electrode water spray flushing of blood clots, and the submucosal water injection button is used to provide a flow rate signal for submucosal water injection. The stop water injection button, the first water spray flushing button, the second water spray flushing button, and the submucosal water injection button are respectively electrically connected to the first controller.

[0011] Optionally, the signal input component includes a touch display screen disposed on the handle housing. The touch display screen is used to provide a signal to stop water injection, a flow rate signal for electrode water spray to flush blood clots, and a flow rate signal for submucosal water injection. The touch display screen is electrically connected to the first controller.

[0012] Optionally, the electrode outlet flow rate regulating mechanism also includes a display screen, which is electrically connected to the first controller.

[0013] Optionally, the signal input component includes a touch display screen disposed on the handle housing. The touch display screen is used to provide a signal to stop water injection, a flow rate signal for electrode water spray to flush blood clots, and a flow rate signal for submucosal water injection. The touch display screen is electrically connected to the first controller.

[0014] Optionally, the handle housing includes a longitudinal housing portion and a transverse housing portion connected sequentially from bottom to top. The longitudinal housing portion is used for gripping. The proximal end of the insulating sheath is mounted on the transverse housing portion. The proximal end of the connecting tube is inserted into the transverse housing portion. The booster water pump is mounted in the longitudinal housing portion. The water spray flushing button and the submucosal water injection button are located on the left or right side wall of the transverse housing portion. The display screen is located on the top of the transverse housing portion.

[0015] Optionally, the booster pump is a plunger pump.

[0016] Optionally, the water-injection type high-frequency electrosurgical unit also includes an electrocoagulation and electrocutting switching mechanism. The electrocoagulation and electrocutting switching mechanism includes an electrocoagulation button, an electrocutting button, a second controller, and a high-frequency power supply. The electrocoagulation button, the electrocutting button, and the high-frequency power supply are electrically connected to the second controller, and the high-frequency power supply is electrically connected to the electrode through a connecting tube.

[0017] Optionally, the second controller is electrically connected to the display screen.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this utility model are:

[0020] In the water-injection high-frequency electrosurgical unit provided by this utility model, the electrode water outlet flow rate adjustment mechanism provides a structural basis for adjusting the motor speed of the booster water pump. By adjusting the motor speed of the booster water pump, the output flow rate of the booster water pump can be adjusted, and thus the output water pressure of the booster water pump can be adjusted. This realizes the adjustment of the water injection pressure of the high-frequency electrosurgical unit, enabling the high-frequency electrosurgical unit to adapt to different water injection or spraying scenarios during surgery, especially suitable for the two application scenarios of spraying water to rinse blood clots and submucosal water injection. Attached Figure Description

[0021] Figure 1 This is a side view schematic diagram of a water-injection type high-frequency electrosurgical unit according to Embodiment 1;

[0022] Figure 2 This is a top view schematic diagram of a water-injection type high-frequency electrosurgical unit according to Embodiment 1;

[0023] Figure 3 This is a cross-sectional schematic diagram of a water-injection type high-frequency electrosurgical unit according to Example 1;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the electrode outlet water flow rate adjustment mechanism according to Example 1.

[0026] Explanation of reference numerals in the attached figures

[0027] 1: Handle housing;

[0028] 11: Motor; 12: Longitudinal housing; 13: Transverse housing; 14: Piston block; 15: Piston rod; 16: Disc gear; 17: Cylinder block; 18: Eccentric wheel; 19: Drive gear;

[0029] 21: Insulating sheath; 22: Connecting tube; 23: Electrode;

[0030] 31: First controller; 32: Driver; 33: Stop water injection button; 34: First water spray flushing button; 35: Second water spray flushing button; 36: Submucosal water injection button; 37: Touch screen;

[0031] 41: Electrocoagulation button; 42: Electrocuting button. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, "near" refers to the side closer to the operator, and "far" refers to the side closer to the patient. The directional terms "upper," "lower," "front," "back," "left," and "right" used in this document are... Figure 1 The orientation is taken as a reference, where the front-to-back direction is also the horizontal direction, the up-and-down direction is also the vertical direction, and the direction from back to front is also the direction from near to far.

[0033] Example 1

[0034] like Figures 1 to 5 As shown, this embodiment provides a water-injection type high-frequency electrosurgical unit. This water-injection type high-frequency electrosurgical unit includes a handle housing 1, a booster pump, an electrode water flow rate adjustment mechanism, and a shaft assembly.

[0035] The shaft assembly includes an insulating sheath 21, a connecting tube 22, and a tubular electrode 23. The proximal end of the insulating sheath 21 is mounted on the handle housing 1. The proximal end of the connecting tube 22 is inserted into the handle housing 1, and the distal end of the connecting tube 22 is inserted into the insulating sheath 21. The proximal end of the electrode 23 is inserted into the insulating sheath 21 and communicates with the distal end of the connecting tube 22. A booster pump is installed inside the handle housing 1, and the proximal end of the connecting tube 22 communicates with the outlet of the booster pump.

[0036] The electrode outlet water flow regulating mechanism includes a signal input component, a first controller 31 and a driver 32 installed on the handle housing 1. The signal input component is electrically connected to the first controller 31, the first controller 31 is electrically connected to the driver 32, and the driver 32 is electrically connected to the motor 11 of the booster water pump.

[0037] The water-injection high-frequency electrosurgical unit with this design provides a structural basis for adjusting the speed of the booster pump motor 11 through the electrode water flow adjustment mechanism. By adjusting the speed of the booster pump motor 11, the output flow rate of the booster pump can be adjusted, which in turn can adjust the output water pressure of the booster pump. This allows the high-frequency electrosurgical unit to be adapted to different water injection or spraying scenarios during surgery, especially suitable for the two application scenarios of spraying water to rinse blood clots and submucosal water injection.

[0038] Preferably, the signal input component includes a stop water injection button 33, a water spray flushing button, and a submucosal water injection button 36 disposed on the handle housing 1. The stop water injection button 33 provides a signal to stop water injection, the water spray flushing button provides a flow rate signal for the electrode 23 to spray water to flush the blood clot, and the submucosal water injection button 36 provides a flow rate signal for submucosal water injection. The stop water injection button 33, the water spray flushing button, and the submucosal water injection button 36 are electrically connected to the first controller 31. The flow rate for the electrode 23 to spray water to flush the blood clot is 5–15 mL / min, and the flow rate for the submucosal water injection is 15–20 mL / min.

[0039] This signal input component configuration provides the structural basis for the high-frequency electrosurgical unit to switch between water spray flushing mode and submucosal water injection mode. Generally, when the high-frequency electrosurgical unit is in water spray flushing mode, the water flow rate of electrode 23 is 5-15 mL / min, and the water pressure is relatively low. When the high-frequency electrosurgical unit is in submucosal water injection mode, the water flow rate of electrode 23 is 15-20 mL / min, and the water pressure is relatively high. Therefore, the water injection function of the water injection type high-frequency electrosurgical unit provided in this embodiment can be applied to both water spray flushing of blood clots and submucosal water injection scenarios, improving the adaptability of the high-frequency electrosurgical unit.

[0040] During the procedure, when flushing blood clots with water, the water pressure needs to be adjusted to adapt to the amount of bleeding and tissue characteristics (i.e., fragile and dense tissues). Therefore, in this embodiment, the signal input component includes a stop water injection button 33, a first water flushing button 34, a second water flushing button 35, and a submucosal water injection button 36, all located on the handle housing 1. The stop water injection button 33 provides a signal to stop water injection; the first water flushing button 34 provides a low-flow signal for the electrode 23 to flush the blood clots with water; the second water flushing button 35 provides a high-flow signal for the electrode 23 to flush the blood clots with water; and the submucosal water injection button 36 provides a flow rate signal for submucosal water injection. The stop water injection button 33, the first water flushing button 34, the second water flushing button 35, and the submucosal water injection button 36 are all electrically connected to the first controller 31. Among them, the low flow rate of water spraying to rinse blood clots on electrode 23 is 5-10 mL / min, the high flow rate of water spraying to rinse blood clots on electrode 23 is 10-15 mL / min, and the flow rate of water injection into the submucosa is 15-20 mL / min.

[0041] This signal input component configuration provides the structural basis for the high-frequency electrosurgical unit to switch between the first water spray irrigation mode, the second water spray irrigation mode, and the submucosal water injection mode. Therefore, the water injection function of the water-injection high-frequency electrosurgical unit can be applied to both water spray irrigation of blood clots and submucosal water injection scenarios. Furthermore, when the water-injection high-frequency electrosurgical unit is used for water spray irrigation of blood clots, it can adapt to the amount of bleeding and tissue characteristics, allowing the user to select to trigger either the first water spray irrigation button 34 or the second water spray irrigation button 35.

[0042] Preferably, the signal input component includes a touch screen 37 disposed on the handle housing 1. The touch screen 37 is used to provide signals for stopping water injection, flow rate signals for the electrode 23 spraying water to flush blood clots, and flow rate signals for submucosal water injection. Thus, by providing the touch screen 37, a new (i.e., touch-based) signal input method is provided, unlike buttons, offering more options. Users can choose according to their preferences, resulting in high user-friendliness. Furthermore, the touch screen 37 is electrically connected to the first controller 31, providing a structural basis for displaying information on the touch screen 37 regarding whether the electrosurgical unit is in water flushing mode or submucosal water injection mode, better reminding the user of the current electrosurgical unit mode.

[0043] Preferably, the handle housing 1 includes a longitudinal housing portion 12 and a transverse housing portion 13 connected sequentially from bottom to top. The longitudinal housing portion 12 is used for gripping and forms a longitudinal cavity. The transverse housing portion 13 forms a transverse cavity communicating with the longitudinal cavity. A booster water pump is housed in the longitudinal cavity and fixedly connected to the longitudinal housing portion 12. The proximal end of the insulating sheath tube 21 is inserted into the transverse cavity and connected to the transverse housing portion 13. The proximal end of the connecting tube 22 is inserted into the transverse housing portion 13. A stop water injection button 33, a first water spray flushing button 34, a second water spray flushing button 35, and a submucosal water injection button 36 are located on the left or right side wall of the transverse housing portion 13. A touch screen display 37 is located on the top of the transverse housing portion 13. This design facilitates user activation of the buttons and display screen, and allows users to easily view the information on the display screen.

[0044] Furthermore, in this embodiment, the stop water injection button 33, the first water spray flushing button 34, the second water spray flushing button 35, and the submucosal water injection button 36 are located on the left side wall of the transverse housing 13. This makes it convenient for the right thumb, which is holding the longitudinal housing 12, to press.

[0045] More preferably, the booster pump is a plunger pump. Specifically, the plunger pump includes a plunger block 14, a plunger rod 15, and a motor 11, a disc gear 16, and a cylinder 17 arranged sequentially from bottom to top. The inlet and outlet of the plunger pump are both located on the cylinder 17. The drive gear 19 of the motor 11 meshes with the disc gear 16, and the shaft of the drive gear 19 is perpendicular to the shaft of the disc gear 16. An eccentric wheel 18 is fixedly mounted on the disc of the disc gear 16. The lower end of the plunger rod 15 is sleeved on the eccentric wheel 18, and the upper end of the plunger rod 15 is rotatably connected to the plunger block 14. The plunger block 14 is slidably connected to the cylinder 17. When the eccentric wheel 18 rotates, it drives the plunger rod 15 to swing, thereby driving the plunger block 14 to slide back and forth linearly in the cylinder 17. This plunger pump, with its large longitudinal dimension and small lateral dimension, is designed to pressurize medical fluids. When installed in the longitudinal cavity, it makes the longitudinal shell 12 large in longitudinal dimension and small in lateral dimension, making it easy for people to hold.

[0046] Preferably, the water-injection type high-frequency electrosurgical unit further includes an electrocoagulation / electrocutting switching mechanism. This mechanism includes an electrocoagulation button 41, an electrocutting button 42, a second controller, and a high-frequency power supply. The electrocoagulation button 41, the electrocutting button 42, and the high-frequency power supply are electrically connected to the second controller. The high-frequency power supply is electrically connected to the electrode 23 via a connecting pipe 22. This electrocoagulation / electrocutting switching mechanism provides a structural basis for changing the current waveform and frequency of the high-frequency power supply by triggering the electrocoagulation button 41 or the electrocutting button 42, thereby outputting a high-frequency current to the electrode 23 for electrocoagulation or electrocutting.

[0047] More preferably, the second controller is electrically connected to the touch display screen 37. This provides a structural basis for displaying information on the touch display screen 37 regarding whether the electrosurgical unit is in electrocoagulation or electrocutting mode, better reminding the user of the current mode of the electrosurgical unit.

[0048] More preferably, the first controller 31 and the second controller are mounted on the same circuit board, which is installed inside the handle housing 1. This results in a compact structure.

[0049] Specifically, the connector is made of metal, with its distal end electrically connected to electrode 23 and its proximal end electrically connected to a high-frequency power supply; or, the connector includes a support body and a conductive wire embedded in the support body, with the first end of the conductive wire electrically connected to electrode 23 and the second end of the conductive wire located at the proximal end of the connector and electrically connected to the high-frequency power supply.

[0050] Specifically, the longitudinal shell portion 12 and the transverse shell portion 13 are connected to form a T-shape, and the included angle between the longitudinal shell portion 12 and the transverse shell portion 13 is 90° to 130°.

[0051] Example 2

[0052] The main difference between this embodiment and Embodiment 1 is:

[0053] The input signal can be provided via the touch screen 37 to cancel the settings of the stop water injection button 33, the first water spray flushing button 34, the second water spray flushing button 35, and the submucosal water injection button 36; or, the touch screen 37 can be disabled, and the input signal can be provided via the stop water injection button 33, the first water spray flushing button 34, the second water spray flushing button 35, and the submucosal water injection button 36.

[0054] The remaining contents are the same as in Example 1, and will not be repeated here.

[0055] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0057] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A water-injection type high-frequency electrosurgical unit, characterized in that, It includes a handle housing (1), a booster pump, an insulating sheath (21), a connecting pipe (22), a tubular electrode (23), and an electrode outlet flow rate adjustment mechanism; The proximal end of the insulating sheath (21) is installed on the handle housing (1), the proximal end of the connecting tube (22) is inserted into the handle housing (1), the distal end of the connecting tube (22) is inserted into the insulating sheath (21), the proximal end of the electrode (23) is inserted into the insulating sheath (21) and communicates with the distal end of the connecting tube (22), the booster pump is installed in the handle housing (1), and the proximal end of the connecting tube (22) is communicated with the outlet of the booster pump; The electrode outlet water flow regulating mechanism includes a signal input component, a first controller (31) and a driver (32) mounted on the handle housing (1). The signal input component is electrically connected to the first controller (31), the first controller (31) is electrically connected to the driver (32), and the driver (32) is electrically connected to the motor (11) of the booster pump.

2. The water-injection type high-frequency electrosurgical unit according to claim 1, characterized in that, The signal input component includes a stop water injection button (33), a water spray flushing button, and a submucosal water injection button (36) disposed on the handle housing (1). The stop water injection button (33) is used to provide a signal to stop water injection, the water spray flushing button is used to provide a flow rate signal for the electrode (23) to spray water to flush the blood clot, and the submucosal water injection button (36) is used to provide a flow rate signal for submucosal water injection. The stop water injection button (33), the water spray flushing button, and the submucosal water injection button (36) are electrically connected to the first controller (31) respectively.

3. The water-injection type high-frequency electrosurgical unit according to claim 1, characterized in that, The signal input component includes a stop water injection button (33), a first water spray flushing button (34), a second water spray flushing button (35), and a submucosal water injection button (36) disposed on the handle housing (1). The stop water injection button (33) is used to provide a signal to stop water injection. The first water spray flushing button (34) is used to provide a low flow signal for the electrode (23) to spray water to flush the blood clot. The second water spray flushing button (35) is used to provide a high flow signal for the electrode (23) to spray water to flush the blood clot. The submucosal water injection button (36) is used to provide a flow signal for submucosal water injection. The stop water injection button (33), the first water spray flushing button (34), the second water spray flushing button (35), and the submucosal water injection button (36) are electrically connected to the first controller (31).

4. The water-injection type high-frequency electrosurgical unit according to claim 1, characterized in that, The signal input component includes a touch screen (37) disposed on the handle housing (1). The touch screen (37) is used to provide a signal to stop water injection, a flow rate signal for the electrode (23) to spray water to flush blood clots, and a flow rate signal for submucosal water injection. The touch screen (37) is electrically connected to the first controller (31).

5. The water-injection type high-frequency electrosurgical unit according to claim 2, characterized in that, The electrode outlet flow rate adjustment mechanism also includes a display screen, which is electrically connected to the first controller (31).

6. The water-injection type high-frequency electrosurgical unit according to claim 2, characterized in that, The signal input component includes a touch screen (37) disposed on the handle housing (1). The touch screen (37) is used to provide a signal to stop water injection, a flow rate signal for the electrode (23) to spray water to flush blood clots, and a flow rate signal for submucosal water injection. The touch screen (37) is electrically connected to the first controller (31).

7. The water-injection type high-frequency electrosurgical unit according to claim 5, characterized in that, The handle housing (1) includes a longitudinal housing (12) and a transverse housing (13) connected sequentially from bottom to top. The longitudinal housing (12) is used for gripping. The proximal end of the insulating sheath (21) is installed on the transverse housing (13). The proximal end of the connecting tube (22) is inserted into the transverse housing (13). The booster water pump is installed in the longitudinal housing (12). The water spray flushing button and the submucosal water injection button (36) are located on the left or right side wall of the transverse housing (13). The display screen is located on the top of the transverse housing (13).

8. The water-injection type high-frequency electrosurgical unit according to claim 1, characterized in that, The booster pump is a plunger pump.

9. The water-injection type high-frequency electrosurgical unit according to claim 5, characterized in that, It also includes an electrocoagulation and electrocution switching mechanism, which includes an electrocoagulation button (41), an electrocution button (42), a second controller and a high-frequency power supply. The electrocoagulation button (41), the electrocution button (42) and the high-frequency power supply are electrically connected to the second controller, and the high-frequency power supply is electrically connected to the electrode (23) through a connecting tube (22).

10. The water-injection type high-frequency electrosurgical unit according to claim 9, characterized in that, The second controller is electrically connected to the display screen.

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