Surgical electrode and use method thereof

Abstract

The invention provides a surgical electrode and a using method thereof, and relates to the technical field of medical instruments. Two electrode accommodating holes are formed in the fixed sleeve body, a telescopic electrode stem and a rotating electrode stem are respectively arranged in the two electrode accommodating holes, and a bending part is arranged at the end part of the rotating electrode stem; an electrode control circuit board is arranged in the containing cavity and electrically connected with the telescopic electrode rod and the rotary electrode rod. The surgical electrode has the beneficial effects that the telescopic assembly is arranged in the inner shell of the surgical electrode and can control the telescopic electrode rod to stretch out and draw back, so that the surgical electrode can execute single-electrode and double-electrode functions and has multiple functions, and the problem that an existing surgical electrode is single in function is solved; and in the switching process of the single-electrode working state and the double-electrode working state of the operation electrode, the tool bit does not need to be replaced. And in the dual-electrode mode, the distance between the electrodes is adjustable, so that the surgical electrode can adapt to the widths of different surgical wounds, the adaptability of the surgical electrode is improved, and the surgical effect is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a surgical electrode and a method for using the same. Background Art

[0002] Surgical electrodes (also known as surgical electrode blades), as core components of high-frequency electrosurgery equipment, are widely used in procedures such as tissue cutting and coagulation. Traditional surgical electrodes typically utilize either a single or dual-electrode structure, but their functional modes are limited. Single-electrode blades are typically used for cutting, while dual-electrode blades are typically used for bipolar coagulation. During surgery, a single blade cannot meet the needs of the entire procedure.

[0003] In the prior art, if it is necessary to switch between single-electrode and dual-electrode modes during surgery, the doctor must replace different blade heads. In minimally invasive surgery, this not only increases the complexity of the surgical operation, but may also lead to prolonged surgery time and increase the risk of trauma to the patient. The distance between the two electrodes of the existing dual-electrode scalpel is usually fixed. The distance between the two electrodes of the dual-electrode scalpel is of great significance to the surgical process. The distance between the two electrodes of the dual-electrode scalpel needs to be dynamically adjusted according to the width of the surgical wound or tissue characteristics. The current intensity of the bipolar forceps tip can also be accurately controlled by the distance between the two electrodes. The existing dual-electrode scalpel cannot be dynamically adjusted according to the width of the surgical wound or tissue characteristics, resulting in poor surgical adaptability and affecting surgical accuracy and effect. Especially in minimally invasive surgery, due to the narrow operating space, the fixed electrode distance may not be able to accurately match the lesion area, thereby increasing the difficulty and risk of the operation.

[0004] Therefore, there is an urgent need for a new type of surgical electrode that can switch between single and dual electrode modes without changing the blade, and has the function of adjustable electrode spacing to improve surgical adaptability, operational convenience and treatment effect. Summary of the Invention

[0005] In view of this, the present invention provides a surgical electrode, comprising an inner shell and an outer shell; the inner shell is rotatably disposed in the outer shell, the outer shell is provided with a first rotation drive assembly, and the first rotation drive assembly is connected to the outer wall of the inner shell; The inner shell is provided with a fixed sleeve and a receiving cavity; the fixed sleeve is provided with two electrode receiving holes, and the two electrode receiving holes are respectively provided with a telescopic electrode rod and a rotating electrode rod, and the ends of the rotating electrode rod are provided with a bent portion; the receiving cavity is provided with an electrode control circuit board, and the electrode control circuit board is electrically connected to the telescopic electrode rod and the rotating electrode rod; A second rotation drive assembly and a telescopic assembly are provided in the accommodating cavity, wherein the second rotation drive assembly is connected to the rotating electrode rod, and the telescopic assembly is connected to the telescopic electrode rod; The telescopic assembly is used to control the extension and retraction of the telescopic electrode rod, thereby enabling the surgical electrode to switch between single and double electrode working states; the second rotary drive assembly is used to drive the rotary electrode rod to rotate, thereby controlling the distance between the end of its bent portion and the end of the extended telescopic electrode rod; the first rotary drive assembly is used to drive the inner shell to rotate, thereby adjusting the angle of the line connecting the end of the extended telescopic electrode rod and the end of the bent portion relative to the surgical wound.

[0006] Furthermore, the first rotary drive assembly includes a first drive motor, an inner ring gear and an outer ring gear, the first drive motor is fixed inside the outer shell, the inner ring gear is fixed to the outer wall of the inner shell, the outer ring gear is fixed to the outer wall of the outer shell, and a first drive gear is provided at the end of the output shaft of the first drive motor, and the first drive gear is engaged with the inner ring gear and the outer ring gear at the same time.

[0007] Furthermore, the second rotation drive assembly includes a second rotation drive motor, a second drive gear is provided at the end of the second rotation drive motor, a driven gear is provided on the rotating electrode rod, and the second drive gear is meshed with the driven gear.

[0008] Furthermore, the telescopic component is an electric push rod.

[0009] Furthermore, an insulating sleeve is provided in the inner shell, the insulating sleeve is fixed in the inner shell, one end of the insulating sleeve is an intervention end, the intervention end extends out of the inner shell, and the two electrode accommodating holes are both provided in the insulating sleeve.

[0010] Furthermore, the two electrode accommodating holes are respectively a rotating electrode accommodating hole and a telescopic electrode accommodating hole. When the telescopic electrode rod is fully retracted, the end of the telescopic electrode rod is fully retracted into the telescopic electrode accommodating hole. When the telescopic electrode rod is fully extended, the end of the telescopic electrode rod is flush with the end of the rotating electrode rod.

[0011] Furthermore, an angle sensor is provided on the outer side of the rotating electrode rod, and a first drive motor controller is also provided on the inner wall of the inner shell. The first drive motor controller is communicatively connected to the angle sensor, and the angle sensor is fixed to the inner wall of the inner gear ring. The angle sensor is used to sense the rotation angle of the rotating electrode rod in real time and transmit the sensed rotation angle to the first drive motor controller. The first drive motor controller controls the rotation of the first drive motor according to the rotation angle of the rotating electrode rod, thereby adaptively controlling the rotation angle of the inner shell relative to the outer shell.

[0012] Furthermore, the end of the rotating electrode rod located in the outer shell is rotatably covered with a rotating electrode cap, and the rotating electrode cap is fixedly connected to the inner wall of the inner shell through a mounting bracket, and the rotating electrode cap is connected to the electrode control circuit board.

[0013] The present invention also provides a method for using a surgical electrode, which uses the above-mentioned surgical electrode and includes the following steps: S1: The electrode control circuit board switches the surgical electrode to the single-electrode mode, extends the end of the rotating electrode rod to the affected area in the patient's body, and completes the single-electrode surgical process; S2: The telescopic assembly drives the telescopic electrode rod to extend from the electrode accommodating hole so that the end of the telescopic electrode rod is flush with the end of the rotating electrode rod; S3: The second rotation drive assembly drives the end of the rotating electrode rod to rotate, causing the bent portion to rotate around the axis of the rotating electrode rod, thereby adjusting the distance between the end of the telescopic electrode rod and the end of the bent portion; S4: The first rotary drive assembly drives the rotary inner housing to rotate, thereby adjusting the angle of the line connecting the end of the extended telescopic electrode rod and the end of the bent portion relative to the surgical wound; S5: The electrode control circuit board switches the surgical electrode to the dual-electrode mode, completing the dual-electrode surgical process.

[0014] Furthermore, in step S4, the process of adjusting the angle of the line connecting the end of the extended telescopic electrode rod and the end of the bent portion relative to the surgical wound is as follows: the angle θ rotated by the rotating electrode rod relative to the original position in step S2 is obtained, and the second rotation drive assembly drives the rotating inner housing to rotate -φ relative to the outer housing, where θ and φ satisfy the following relationship: R·sinθ= (R·cosθ+L)·tanφ Wherein, R is the distance between the end of the bent portion and the axis of the rotating electrode rod, and L is the distance between the axis of the telescopic electrode rod and the axis of the rotating electrode rod.

[0015] The beneficial effects of a surgical electrode and a method of using the same of the present invention are: 1. The surgical electrode has two electrode accommodating holes in its inner shell, and a telescopic electrode rod and a rotating electrode rod are respectively provided in the two electrode accommodating holes. The telescopic assembly can control the extension and retraction of the telescopic electrode rod, so that the surgical electrode can perform single and double electrode functions. In addition, the switching process between the single and double electrode working states of the surgical electrode does not require the replacement of the blade. During minimally invasive surgery, the surgical electrode does not need to be removed when performing different modes of surgery, thereby achieving the effect of replacing the blade in the body, which can reduce the patient's pain during surgery and shorten the operation time.

[0016] 2. The surgical electrode also includes a second rotary drive assembly, which is connected to the rotating electrode rod. The telescopic electrode rod and the rotating electrode rod are arranged in parallel, and a bending portion is provided at the end of the rotating electrode rod. The second rotary drive assembly can drive the rotating electrode rod to rotate, thereby controlling the distance between the end of the bending portion and the end of the extended telescopic electrode rod. In this way, the surgical electrode can realize single and dual electrode working states, and the distance between the two electrode rod ends in the dual electrode working state can be adjusted according to the width of the surgical wound, thereby improving its adaptability in the dual electrode working state and further improving the surgical effect.

[0017] 3. The surgical electrode includes an inner shell and an outer shell; the inner shell can be rotatably arranged in the outer shell, and the outer shell is provided with a first rotation drive component, which is connected to the outer wall of the inner shell. The first rotation drive component can drive the inner shell to rotate, thereby adjusting the angle of the line connecting the end of the extended telescopic electrode rod and the end of the bent portion relative to the surgical wound, ensuring that the doctor can automatically reset the surgical electrode angle in the dual-electrode state without manually rotating the surgical electrode during the operation; the surgical electrode can achieve dual-electrode adjustment in the dual-electrode working state, and can also avoid the problem of the end connection line of the two electrode rods being obliquely intertwined with the surgical wound after the distance between the ends is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a surgical electrode according to an embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of a surgical electrode according to an embodiment of the present invention.

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 The figure is a schematic diagram of the relationship between the inner shell of a surgical electrode and the rotation angle of a rotating electrode rod according to an embodiment of the present invention.

[0022] Figure 5 This is a flow chart of a method for using a surgical electrode according to an embodiment of the present invention.

[0023] In the above figure: 1-outer shell, 11-first drive motor, 12-first drive motor controller, 13-outer ring gear, 2-inner shell, 21-inner ring gear, 3-insulating sleeve, 4-telescopic electrode rod, 41-electric push rod, 5-rotating electrode rod, 51-bending portion, 52-second drive motor, 53-rotating electrode cap, 54-second drive gear, 55-driven gear, 56-angle sensor, 6-surgical wound, 7-electrode control circuit board, 8-rotating bearing. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0025] Please refer to Figures 1 to 4 A surgical electrode according to the present invention comprises an inner housing 2 and an outer housing 1. The inner housing 2 is rotatably disposed within the outer housing 1. Specifically, rotation bearings 8 are provided at each end of the inner housing 2. The inner housing 2 is mounted to the inner housing 2 via the rotation bearings 8, thereby enabling relative rotation between the inner housing 2 and the outer housing 1. The outer housing 1 is provided with a first rotation drive assembly connected to the outer wall of the inner housing 2 and configured to drive the inner housing 2 to rotate within the outer housing 1.

[0026] The inner shell 2 is provided with a fixed sleeve and a accommodating cavity; the fixed sleeve is provided with two electrode accommodating holes, and the two electrode accommodating holes are respectively provided with a telescopic electrode rod 4 and a rotating electrode rod 5. The telescopic electrode rod 4 and the rotating electrode rod 5 are arranged in parallel, and the end of the rotating electrode rod 5 is provided with a bending portion 51; the accommodating cavity is provided with an electrode control circuit board 7, and the electrode control circuit board 7 is electrically connected to the telescopic electrode rod 4 and the rotating electrode rod 5; the electrode control circuit board 7 is used to control the conductive state of the telescopic electrode rod 4 and the rotating electrode rod 5.

[0027] A second rotation drive assembly and a telescopic assembly are further provided in the accommodating cavity. The second rotation drive assembly is connected to the rotating electrode rod 5 , and the telescopic assembly is connected to the telescopic electrode rod 4 .

[0028] The telescopic assembly is used to control the extension and retraction of the telescopic electrode rod 4, thereby enabling the surgical electrode to switch between single and double electrode working states; the second rotary drive assembly is used to drive the rotary electrode rod 5 to rotate, thereby controlling the distance between the end of its bent portion 51 and the end of the extended telescopic electrode rod 4; the first rotary drive assembly is used to drive the inner shell 2 to rotate, thereby adjusting the angle of the line connecting the end of the extended telescopic electrode rod 4 and the end of the bent portion 51 relative to the surgical wound 6.

[0029] Specifically, during surgery, the telescopic electrode rod 4 is first fully retracted, with only the rotating electrode rod 5 of the surgical electrode extending out of the electrode receiving hole. The electrode control circuit board 7 applies a high-frequency current to the rotating electrode rod 5, placing the surgical electrode in a single-electrode operating state. The surgical electrode performs a cutting function, and the medical staff completes the tissue cutting process. At this point, a surgical wound (i.e., a cut wound) is generated in the patient's body. The telescopic assembly then pushes the telescopic electrode rod 4 to fully extend. The second rotary drive assembly drives the rotating electrode rod 5 to rotate a certain angle until the distance between the end of the bent portion 51 of the rotating electrode rod 5 and the end of the telescopic electrode rod reaches a desired length. The first rotary drive assembly is used to drive the inner housing 2 to rotate so that the angle of the line connecting the end of the telescopic electrode rod 4 and the end of the bent portion 51 relative to the surgical wound reaches a suitable angle (usually a right angle). The electrode control circuit board 7 simultaneously applies a high-frequency current to the rotating electrode rod 5 and the telescopic electrode rod 4, placing the surgical electrode in a dual-electrode operating state. The medical staff performs a coagulation operation on the surgical wound to reduce bleeding. It is understandable that the structure of the electrode control circuit board 7 and its control of the working state of the surgical electrode and the switching of the single and double motor modes are existing technologies and will not be described in detail here.

[0030] The telescopic electrode rod 4 of the surgical electrode of the present invention adopts a telescopic structure, which enables the surgical electrode to perform both single and dual electrode functions, thereby improving its practicality and resolving the problem of the single function of existing surgical electrodes. Furthermore, the switching between the single and dual electrode operating modes of the surgical electrode does not require the replacement of the blade. During minimally invasive surgery, the surgical electrode does not need to be removed when performing different surgical modes, achieving the effect of replacing the blade within the body. This can reduce pain for the patient during surgery and shorten the operation time. The surgical electrode also includes a second rotary drive assembly 52, which drives the rotating electrode rod 5 to rotate, thereby controlling the distance between the end of its bent portion 51 and the end of the extended telescopic electrode rod 4. This allows the distance between the two electrode ends to be adjustable when the surgical electrode performs the dual electrode function. This allows the surgical electrode to be adjusted according to the width of the surgical wound 6, thereby improving the adaptability of the surgical electrode and, in turn, the surgical effect. At the same time, the outer shell 1 of the surgical electrode serves as a hand-held part. When the distance between the two electrode ends is adjusted, the line connecting the two electrode ends and the surgical wound 6 will be obliquely intertwined. The first rotary drive component 11 in the outer shell 1 of the surgical electrode can drive the inner shell 2 to rotate. This can solve the problem of the line connecting the two electrode ends and the surgical wound 6 being obliquely intertwined after the distance between the two electrode rod ends is adjusted, ensuring that the doctor can automatically reset the surgical electrode angle in the dual-electrode state without letting go during the operation, thereby improving the surgical efficiency.

[0031] In a preferred embodiment, the first rotary drive assembly includes a first drive motor 11, an inner ring gear 21, and an outer ring gear 13. The first drive motor 11 is fixed within the outer housing 1, the inner ring gear 21 is fixed to the outer wall of the inner housing 2, and the outer ring gear 13 is fixed to the outer wall of the outer housing 1. A first drive gear is provided at the end of the output shaft of the first drive motor 11, and the first drive gear meshes with both the inner ring gear 21 and the outer ring gear 13. In this structure, the first drive motor 11 drives the first drive gear to rotate, thereby driving the inner housing 2 to rotate relative to the outer housing 1 via the inner ring gear 21. The first drive gear is located between the inner ring gear 21 and the outer ring gear 13, and its simultaneous meshing with the inner ring gear 12 and the outer ring gear 13 can improve the stability of the inner housing's rotation.

[0032] In a preferred embodiment, the second rotary drive assembly includes a second rotary drive motor 52, with a second drive gear 54 disposed at its end. The rotating electrode rod 5 is provided with a driven gear 55, with which the second drive gear 54 meshes. The telescopic assembly is an electric push rod 41, which is used to drive the telescopic electrode rod 4 to extend and retract within the electrode accommodating hole. The structure of the electric push rod 41 is conventional and will not be described in detail here.

[0033] In a preferred embodiment, an insulating sleeve 3 is further provided within the inner housing 2. One end of the insulating sleeve 3 serves as an insertion end, and the other end is connected to the fixed sleeve. The insertion end extends outside the inner housing 2. Two electrode accommodating holes are provided within the insulating sleeve 3, and both electrode accommodating holes extend through the insulating sleeve 3 and the fixed sleeve. The two electrode accommodating holes serve as a rotating electrode accommodating hole and a telescopic electrode accommodating hole, respectively. When the telescopic electrode rod 4 is fully retracted, the end of the telescopic electrode rod 4 is completely retracted into the telescopic electrode accommodating hole. When the telescopic electrode rod 4 is fully extended, the end of the telescopic electrode rod 4 is flush with the end of the rotating electrode rod 5.

[0034] In a preferred embodiment, an angle sensor 56 is provided on the outer side of the rotating electrode rod 5, and a first drive motor controller 12 is further provided on the inner wall of the inner shell 2. The first drive motor controller 12 is communicatively connected to the angle sensor 56, and the angle sensor 56 is fixed to the inner wall of the inner gear ring 21. The angle sensor 56 is used to sense the rotation angle of the rotating electrode rod 5 in real time and transmit the sensed rotation angle to the first drive motor controller 12. The first drive motor controller 12 controls the rotation of the first drive motor 11 according to the rotation angle of the rotating electrode rod 5, thereby adaptively controlling the rotation angle of the inner shell 2 relative to the outer shell 1.

[0035] In a preferred embodiment, the end of the rotating electrode rod 5 located in the outer shell 1 is rotatably covered with a rotating electrode cap 53, and the rotating electrode cap 53 is fixedly connected to the inner wall of the inner shell 2 through a mounting bracket. The rotating electrode cap 53 is connected to the electrode control circuit board 7, and the rotating electrode cap 53 ensures the stability of the power supply of the rotating electrode rod 5 during rotation.

[0036] refer to Figure 5 The present invention also provides a method for using a surgical electrode, which uses the above-mentioned surgical electrode and includes the following steps: S1: The electrode control circuit board 7 switches the surgical electrode to the single-electrode mode, and extends the end of the rotating electrode rod 5 to the affected area in the patient's body, completing the single-electrode surgical process; S2: The electric push rod 41 drives the telescopic electrode rod 4 to extend from the electrode accommodating hole so that the end of the telescopic electrode rod 4 is flush with the end of the rotating electrode rod 5; S3: The second rotation drive assembly drives the end of the rotating electrode rod 5 to rotate, causing the bent portion 51 to rotate around the axis of the rotating electrode rod 5, thereby adjusting the distance between the end of the telescopic electrode rod 4 and the end of the bent portion 51; S4: The first rotary drive assembly drives the rotary inner housing 2 to rotate, adjusting the angle of the line connecting the end of the extended telescopic electrode rod 4 and the end of the bent portion 51 relative to the surgical wound 6; S5: The electrode control circuit board 7 switches the surgical electrode to the dual-electrode mode to complete the dual-electrode surgical process.

[0037] In a preferred embodiment, the process of adjusting the angle in step S4 is as follows: the angle θ rotated by the rotating electrode rod 5 relative to the original position in step S2 is obtained, and the second rotary drive assembly drives the rotating inner housing 2 to rotate -φ relative to the outer housing 1 (i.e., rotate φ in the opposite direction), and the angle θ and the angle φ satisfy the relationship: R·sinθ=(R·cosθ+L)·tanφ Wherein, R is the distance between the end of the bending portion 51 and the axis of the rotating electrode rod 5, and L is the distance between the axis of the telescopic electrode rod 4 and the axis of the rotating electrode rod 5, and R is smaller than L.

[0038] refer to Figure 4 In the above process, at the initial position, the line connecting the end of the bending portion 51 and the end of the telescopic electrode rod 4 is perpendicular to the surgical wound area; when the rotating electrode rod 5 rotates relative to the original position by an angle θ (θ range is 0 ~ 180°), the line connecting the end of the bending portion 51 and the end of the telescopic electrode rod 4 rotates synchronously by an angle φ (φ range is 0 ~45°), at this time, the second rotary drive assembly drives the rotating inner shell to rotate -φ relative to the outer shell, which can realize the resetting of the dual electrode angle, ensuring that the dual motor angle is in the appropriate position relative to the surgical wound in the dual motor mode, avoiding the problem of the doctor needing to rotate the wrist or handpiece at a large angle during the operation.

[0039] In this document, directional terms such as front, back, top, and bottom are defined based on the positions of components in the accompanying drawings and relative to each other, and are intended only for clarity and convenience in describing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0040] The above embodiments and features of the embodiments may be combined with each other unless they conflict. The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A surgical electrode, characterized in that: It comprises an inner shell (2) and an outer shell (1); the inner shell (2) is rotatably arranged in the outer shell (1); the outer shell (1) is provided with a first rotary drive component, and the first rotary drive component is connected to the outer wall of the inner shell (2); The inner shell (2) is provided with a fixed sleeve and a receiving cavity; the fixed sleeve is provided with two electrode receiving holes, the two electrode receiving holes are respectively provided with a telescopic electrode rod (4) and a rotating electrode rod (5), and the end of the rotating electrode rod (5) is provided with a bending portion (51); the receiving cavity is provided with an electrode control circuit board (7), and the electrode control circuit board (7) is electrically connected to the telescopic electrode rod (4) and the rotating electrode rod (5); A second rotary drive assembly and a telescopic assembly are provided in the accommodating cavity, the second rotary drive assembly is connected to the rotary electrode rod (5), and the telescopic assembly is connected to the telescopic electrode rod (4); The telescopic assembly is used to control the telescopic electrode rod (4) to extend and retract; the second rotary drive assembly is used to drive the rotary electrode rod (5) to rotate; and the first rotary drive assembly is used to drive the inner housing (2) to rotate.

2. A surgical electrode according to claim 1, characterized in that: The first rotary drive assembly comprises a first drive motor (11), an inner gear ring (21) and an outer gear ring (13); the first drive motor (11) is fixed in the outer shell (1); the inner gear ring (21) is fixed to the outer wall of the inner shell (2); the outer gear ring (13) is fixed to the outer wall of the outer shell (1); a first drive gear is provided at the end of the output shaft of the first drive motor (11); and the first drive gear is meshed with the inner gear ring (21) and the outer gear ring (13) at the same time.

3. A surgical electrode according to claim 1, characterized in that: The second rotary drive assembly comprises a second rotary drive motor (52), a second drive gear (54) is provided at the end of the second rotary drive motor (52), a driven gear (55) is provided on the rotary electrode rod (5), and the second drive gear (54) is meshed with the driven gear (55).

4. A surgical electrode according to claim 1, characterized in that: The telescopic component is an electric push rod (41).

5. The surgical electrode according to claim 1, characterized in that: An insulating sleeve (3) is further provided in the inner shell (2). The insulating sleeve (3) is fixed in the inner shell (2), one end of which is an intervention end, and the intervention end extends out of the inner shell. Both electrode accommodating holes are provided in the insulating sleeve (3).

6. A surgical electrode according to claim 5, characterized in that: The two electrode accommodating holes are respectively a rotating electrode accommodating hole and a telescopic electrode accommodating hole. When the telescopic electrode rod (4) is fully retracted, the end of the telescopic electrode rod (4) is fully retracted into the telescopic electrode accommodating hole. When the telescopic electrode rod (4) is fully extended, the end of the telescopic electrode rod (4) is flush with the end of the rotating electrode rod (5).

7. The surgical electrode according to claim 2, characterized in that: An angle sensor (56) is sleeved on the outer side of the rotating electrode rod (5), and a first drive motor controller (12) is further provided on the inner wall of the inner shell (2). The first drive motor controller (12) is communicatively connected to the angle sensor (56), and the angle sensor (56) is fixed to the inner wall of the inner shell (2).

8. The surgical electrode according to claim 2, characterized in that: The end of the rotating electrode rod (5) located in the outer shell (1) is rotatably covered with a rotating electrode cap (53), and the rotating electrode cap (53) is fixedly connected to the inner wall of the inner shell (2) through a mounting bracket. The rotating electrode cap (53) is connected to the electrode control circuit board (7).

9. A method for using a surgical electrode, characterized in that: The method uses the surgical electrode according to any one of claims 1 to 8, and the method of use comprises the following steps: S1: The electrode control circuit board (7) switches the surgical electrode to a single-electrode mode, and extends the end of the rotating electrode rod (5) to the affected area in the patient's body, completing the single-electrode surgical process; S2: the telescopic assembly drives the telescopic electrode rod (4) to extend from the electrode receiving hole so that the end of the telescopic electrode rod (4) is flush with the end of the rotating electrode rod (5); S3: The second rotary drive assembly drives the end of the rotating electrode rod (5) to rotate, causing the bent portion (51) to rotate around the axis of the rotating electrode rod (5), thereby adjusting the distance between the end of the telescopic electrode rod (4) and the end of the bent portion (51); S4: The first rotary drive assembly drives the inner housing (2) to rotate, thereby adjusting the angle of the line connecting the end of the extended telescopic electrode rod (4) and the end of the bent portion (51) relative to the surgical wound (6); S5: The electrode control circuit board (7) switches the surgical electrode to the dual-electrode mode, completing the dual-electrode surgical process.

10. A method for using a surgical electrode according to claim 9, characterized in that: The process of adjusting the angle of the line connecting the end of the extended telescopic electrode rod (4) and the end of the bent portion (51) relative to the surgical wound in step S4 is as follows: the angle θ of the rotating electrode rod (5) relative to the original position in step S2 is obtained, and the second rotation drive component drives the inner housing (2) to rotate relative to the outer housing (1) by an angle -φ, and the angle θ and the angle φ satisfy the following relationship: R·sinθ=(R·cosθ+L)·tanφ Wherein, R is the distance between the end of the bending portion (51) and the axis of the rotating electrode rod (5), and L is the distance between the axis of the telescopic electrode rod (4) and the axis of the rotating electrode rod (5).

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