Electric resection device for prostate surgery

Abstract

According to the electric cutting device for the prostate surgery, the rotating angle of the annular base relative to the sliding base is adjusted through the adjusting assembly so that angle adjustment of the cutting electrode can be achieved, in the using process, a hand holds the grab handle, fingers are placed on the handle, force is applied to drive the handle to be close to the grab handle, then the sliding base can be driven to move, and the connecting rod is unfolded relative to the swing arm; the sliding seat drives the cutting electrode to stretch out, after external force is removed, the connecting rod gets close to the swing arm and drives the sliding seat to reset under the action of the elastic piece, the sliding seat drives the cutting electrode to retract into the mounting pipe in the resetting process, and the buffering assembly can buffer the mutual rotation process between the connecting rod and the swing arm; the stretching and retracting processes of the electrode are buffered, errors caused by too fast movement of the cutting electrode are prevented, the stable movement and angle adjusting functions of the cutting electrode are achieved, and the control requirement for the cutting electrode in the electric resection operation is met.

Description

Technical Field

[0001] The present invention relates to the field of electroresection equipment, and in particular to an electroresection device for prostate surgery. Background Art

[0002] Prostatic hyperplasia is the most common benign disease in middle-aged and elderly male patients. When drug treatment is ineffective, minimally invasive transurethral prostate surgery is required. The most effective treatment for prostatic hyperplasia is surgical resection. Traditional open surgery is to make an incision in the patient's lower abdomen and then cut the bladder to remove the prostate, which causes great damage to the normal physiological structure of the urethra. With the development of modern medicine, electroresectoscopes are becoming more and more widely used because of their easy operation and low cost. The surgical instrument comprises a sheath assembly (including an outer sheath and an inner sheath), an operator, and an electrode. The operator comprises a support frame connected to the sheath assembly, a movable seat movably mounted on the support frame, and an elastic member for driving the movable seat to reset. The electrode is located in the sheath assembly and fixed on the movable seat. When in use, the electrode is often moved forward by pushing the movable seat of the operator, thereby extending the electrode forward. After the external force is removed, the movable seat is reset under the action of the elastic member and drives the electrode to retract, and the electrosurgical cutting operation is performed. However, in this process, the retraction and extension process of the electrode is easily affected by the operator's operating habits and the amount of force applied, and the movable seat is prone to unstable movement, thereby affecting the stability of the electrosurgical cutting. Moreover, the angle direction of the electrode is not easy to adjust, and it is difficult to meet the surgical requirements. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies in the above-mentioned technologies and to provide an electrosurgical resection device for prostate surgery, aiming to solve the above-mentioned problems.

[0004] The present invention provides an electrosurgical resection device for prostate surgery, comprising:

[0005] A mounting frame, on which an endoscope, a mounting tube and a handle are arranged;

[0006] A slide seat, the slide seat is movably mounted on the mounting tube, an annular seat is rotatably arranged on the slide seat, a cutting electrode is mounted on the annular seat, and a steel sleeve passing through the slide seat and the mounting tube is arranged on the endoscope;

[0007] An adjusting assembly, the adjusting assembly being arranged on the sliding seat and used for adjusting the angular position of the annular seat;

[0008] A swing arm, one end of the swing arm is hingedly arranged on the mounting frame, the other end of the swing arm is hingedly arranged with a connecting rod, the connecting rod is hingedly connected to the sliding seat, a handle is arranged on the connecting rod, an elastic member is installed at the connection between the connecting rod and the swing arm, and the elastic member is used to drive the connecting rod and the swing arm to move closer to each other;

[0009] A buffer assembly is connected to the swing arm and the connecting rod respectively and is used to buffer the rotation process between the swing arm and the connecting rod.

[0010] Preferably, a slide groove for movably installing the slide seat is provided on the mounting tube, a first bevel gear is coaxially arranged on the annular seat, a through hole is provided in the middle of the first bevel gear for the steel casing to pass through, a second bevel gear meshing with the first bevel gear is rotatably arranged on the slide seat, a transmission shaft is coaxially arranged on the second bevel gear, the transmission shaft passes through the slide groove, and the adjustment assembly is transmission-connected to the transmission shaft and is used to drive the transmission shaft to rotate.

[0011] Preferably, the adjustment assembly includes a driving bevel gear, a transmission bevel gear and a rotating handle, the transmission bevel gear is coaxially arranged with the transmission shaft, the driving bevel gear is meshed with the transmission bevel gear, and the rotating handle is rotatably mounted on the slide and coaxially connected with the driving bevel gear.

[0012] Preferably, a connecting shaft connected to the driving bevel gear is provided on the turning handle, a sleeve for the connecting shaft to pass through is provided on the sliding seat, a limit block is movably provided on the sleeve, the limit block cannot rotate relative to the sleeve, a crown gear ring is provided on the limit block, the driving bevel gear is provided with a crown tooth portion meshing with the crown gear ring, a spring is sleeved on the sleeve, the spring pushes the limit block to drive the crown gear ring to mesh with the crown tooth portion.

[0013] Preferably, the sleeve is a square tube, and the limiting block is provided with a square groove for the square tube to slide through.

[0014] Preferably, a rocker arm is rotatably provided on the sliding seat, an arc block is provided on the rocker arm, an arc groove for the sleeve to slide through is provided on the arc block, a sliding shovel portion is provided on the arc block, and an abutment portion for the sliding shovel portion to abut is provided on the limit block, the sliding shovel portion is used to abut against the limit block to drive the crown gear ring to bite on the crown gear portion, and the rocker arm is used to drive the sliding shovel portion to approach or move away from the limit block.

[0015] Preferably, the buffer assembly includes a cylinder body, a piston disc and a piston rod, the piston disc is movably installed in the inner cavity of the cylinder body and divides the inner cavity of the cylinder body into a first chamber and a second chamber, the piston rod is connected to the piston disc and extends out of the cylinder body, the piston rod is hinged to the connecting rod, the cylinder body is hinged to the mounting frame, and the cylinder body is provided with a channel for connecting the first chamber and the second chamber, and the channel is provided with a valve for adjusting the connectivity of the channel.

[0016] Preferably, the elastic member is a torsion spring, which is installed at the connection between the connecting rod and the swing arm and is used to drive the connecting rod and the swing arm to move closer to each other.

[0017] Preferably, the sliding seat is provided with a curved positive brush sheet and a negative brush sheet, the annular seat is provided with a positive conductive ring and a negative conductive ring, the positive brush sheet elastically abuts against the positive conductive ring, the negative brush sheet elastically abuts against the negative conductive ring, and the positive brush sheet and the negative brush sheet are used to connect the positive and negative poles of an external power supply.

[0018] Preferably, the electrode is provided with a mounting tube for movably sleeved on the outer circumference of the steel casing.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The angle of the cutting electrode can be adjusted by adjusting the rotation angle of the annular seat relative to the sliding seat through the adjustment component. During use, hold the handle with your hand and place your fingers on the handle. Apply force to drive the handle closer to the handle to drive the sliding seat to move. The connecting rod is unfolded relative to the swing arm, and the sliding seat drives the cutting electrode to extend. After the external force is removed, under the action of the elastic member, the connecting rod moves closer to the swing arm and drives the sliding seat to reset. During the resetting process of the sliding seat, the cutting electrode is retracted into the mounting tube. Among them, the buffer component can buffer the mutual rotation process between the connecting rod and the swing arm, that is, buffer the extension and retraction process of the electrode, prevent the cutting electrode from moving too fast and causing errors, realize the stable movement and angle adjustment function of the cutting electrode, and meet the control requirements of the cutting electrode in electrocautery surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a buffer component in a certain embodiment of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a slide seat in a certain embodiment of the present invention;

[0025] Figure 4 for Figure 3 A top view of

[0026] Figure 5 For along Figure 4 Sectional view in the AA direction;

[0027] Figure 6 It is a schematic diagram of the structure of the swing rod and the arc block in a certain embodiment of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the sliding seat and the annular seat in a certain embodiment of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the cutting electrode and the steel casing in a certain embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the structure of an elastic member in a certain embodiment of the present invention;

[0031] Fig.10 Schematic diagram of the structure of an endoscope in a certain embodiment of the present invention.

[0032] In the figure, 1-mounting frame; 11-endoscope; 111-steel casing; 12-handle; 2-mounting tube; 21-slide groove; 3-slide seat; 31-second bevel gear; 32-transmission shaft; 33-sleeve; 34-limiting block; 341-crown gear ring; 35-spring; 36-positive brush sheet; 37-negative brush sheet; 4-ring seat; 41-cutting electrode; 41-mounting tube; 42-first bevel gear; 43-positive conductive ring; 44-negative conductive ring; 5-adjusting assembly; 51-driving bevel gear; 511-crown gear portion; 52-transmission bevel gear; 53-turn handle; 531-connecting shaft; 6-swing arm; 61-connecting rod; 62-handle; 63-elastic member; 7-buffer assembly; 71-cylinder body; 72-piston disc; 73-piston rod; 8-swing rod; 81-arc block; 811-arc groove; 812-sliding shovel portion; 9-channel; 91-valve. DETAILED DESCRIPTION

[0033] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0034] Embodiment 1:

[0035] Reference Figures 1 to 10 The present invention provides an electrosurgical resection device for prostate surgery, comprising:

[0036] A mounting frame 1, on which an endoscope 11, a mounting tube 2 and a handle 12 are arranged;

[0037] A slide seat 3 is movably mounted on the mounting tube 2, an annular seat 4 is rotatably arranged on the slide seat 3, a cutting electrode 41 is mounted on the annular seat 4, and a steel sleeve 111 passing through the slide seat 3 and the mounting tube 2 is arranged on the endoscope 11;

[0038] An adjusting component 5, which is arranged on the sliding seat 3 and is used to adjust the angular position of the annular seat 4;

[0039] A swing arm 6, one end of the swing arm 6 is hingedly arranged on the mounting frame 1, and the other end of the swing arm 6 is hingedly arranged with a connecting rod 61, the connecting rod 61 is hingedly connected to the slide seat 3, a handle 62 is arranged on the connecting rod 61, and an elastic member 63 is installed at the connection between the connecting rod 61 and the swing arm 6, and the elastic member 63 is used to drive the connecting rod 61 and the swing arm 6 to move closer to each other;

[0040] The buffer assembly 7 is connected to the swing arm 6 and the connecting rod 61 respectively and is used to buffer the rotation process between the swing arm 6 and the connecting rod 61.

[0041] When in use, a sheath assembly is installed on the mounting tube 2 (the sheath assembly includes an inner sheath and an outer sheath, which belongs to the prior art content mentioned in the background technology of this application and will not be repeated in this application). The rotation angle of the annular seat 4 relative to the slide 3 is adjusted by the adjustment assembly 5 to achieve angle adjustment of the cutting electrode 41. During use, the hand holds the handle 12 and places the finger on the handle 62. The handle 62 is driven to move closer to the grip by applying force to drive the slide 3 to move. The connecting rod 61 is unfolded relative to the swing arm 6, and the slide 3 drives the cutting electrode 41 to extend. After the external force is removed, under the action of the elastic member 63, the connecting rod 61 moves closer to the swing arm 6 and drives the slide 3 to reset. During the resetting process of the slide 3, the cutting electrode 41 is retracted into the mounting tube 2. The buffer assembly 7 can buffer the mutual rotation process between the connecting rod 61 and the swing arm 6, that is, buffer the extension and retraction process of the electrode, prevent the cutting electrode 41 from moving too fast and causing errors, and achieve stable movement and angle adjustment function of the cutting electrode 41 to meet the control requirements of the cutting electrode 41 in electrocautery surgery. The steel casing 111 has an objective lens built in it.

[0042] Embodiment 2:

[0043] Reference Figures 1 to 10 Combined with the technical solution of Example 1, in this embodiment, a slide groove 21 for movably installing the slide seat 3 is provided on the mounting tube 2, a first bevel gear 42 is coaxially arranged on the annular seat 4, a through hole for the steel casing 111 to pass through is provided in the middle of the first bevel gear 42, a second bevel gear 31 meshing with the first bevel gear 42 is rotatably arranged on the slide seat 3, a transmission shaft 32 is coaxially arranged on the second bevel gear 31, the transmission shaft 32 passes through the slide groove 21, and the adjustment component 5 is transmission-connected to the transmission shaft 32 and is used to drive the transmission shaft 32 to rotate.

[0044] Specifically, the adjustment assembly 5 includes a driving bevel gear 51, a transmission bevel gear 52 and a rotating handle 53. The transmission bevel gear 52 is coaxially arranged with the transmission shaft 32. The driving bevel gear 51 is meshed with the transmission bevel gear 52. The rotating handle 53 is rotatably mounted on the slide 3 and is coaxially connected with the driving bevel gear 51.

[0045] The rotating handle 53 is rotated, and the rotating handle 53 drives the annular seat 4 to rotate through the transmission action of the driving bevel gear 51, the transmission bevel gear 52, the transmission shaft 32, the second bevel gear 31 and the first bevel gear 42, so as to adjust the angle of the cutting electrode 41 on the annular seat 4.

[0046] Specifically, the handle 53 is provided with a connecting shaft 531 connected to the driving bevel gear 51, the slide seat 3 is provided with a sleeve 33 for the connecting shaft 531 to pass through, the sleeve 33 is movably provided with a limit block 34, the limit block 34 cannot rotate relative to the sleeve 33, the limit block 34 is provided with a crown gear ring 341, the driving bevel gear 51 is provided with a crown tooth portion 511 meshing with the crown gear ring 341, and the sleeve 33 is sleeved with a spring 35, the spring 35 pushes the limit block 34 to drive the crown gear ring 341 to mesh with the crown tooth portion 511.

[0047] Each time the turning handle 53 is rotated, the crown gear ring 341 is pushed away and re-engaged with the crown tooth portion 511 under the action of the spring 35, that is, the spring 35 cooperates with the structure of the crown gear ring 341 and the crown tooth portion 511 to pre-tighten the turning handle 53 to a certain extent. The turning handle 53 is not easy to rotate accidentally under non-human force conditions, which facilitates the operator to adjust the angle of the cutting electrode 41.

[0048] Specifically, the sleeve 33 is a square tube, and a square groove for the square tube to slide through is provided on the limit block 34. The sleeve 33 is configured as a square tube to match the square groove on the limit block 34, so that the limit block 34 can only move relative to the sleeve 33 but cannot rotate relative to the sleeve 33, so that the crown gear ring 341 on the limit block 34 can rotate and limit the crown gear portion 511 on the driving bevel gear 51.

[0049] Embodiment 3:

[0050] Reference Figures 1 to 10 Combining the technical solutions of Example 1 and Example 2, in this embodiment, a rocker arm 8 is rotatably provided on the slide seat 3, an arc block 81 is provided on the rocker arm 8, an arc groove 811 for the sleeve 33 to slide through is provided on the arc block 81, a shovel portion 812 is provided on the arc block 81, and an abutment portion for the shovel portion 812 to abut is provided on the limit block 34. The shovel portion 812 is used to abut against the limit block 34 to drive the crown gear ring 341 to bite tightly on the crown gear portion 511, and the rocker arm 8 is used to drive the shovel portion 812 to approach or move away from the limit block 34.

[0051] After the handle 53 is rotated to adjust the angular position of the cutting electrode 41, the swing rod 8 is rotated to drive the arc block 81 to approach the limit block 34, and the sleeve 33 slides into the arc groove 811. The sliding shovel portion 812 abuts against the abutting portion on the limit block 34 to drive the crown gear ring 341 on the limit block 34 to bite tightly on the crown gear portion 511 of the driving bevel gear 51. Under the abutting effect of the sliding shovel portion 812, the limit block 34 cannot move away from the driving bevel gear 51 at this time, that is, the driving bevel gear 51 is locked. Before unlocking, The inability to rotate the handle 53 to adjust the angular position of the cutting electrode 41 can effectively prevent the cutting electrode 41 from rotating accidentally. When the handle 53 needs to be rotated to adjust the angular position of the cutting electrode 41, the rocker arm 8 is rotated to drive the arc block 81 away from the limit block 34, thereby releasing the contact between the slide portion 812 and the limit block 34. At this time, the limit block 34 can move away from the driving bevel gear 51, thereby unlocking the driving bevel gear 51. The operator can then rotate the handle 53 to adjust the angle of the cutting electrode 41.

[0052] Embodiment 4:

[0053] Reference Figures 1 to 10 In combination with the technical solutions of Examples 1 to 3, in this embodiment, the buffer assembly 7 includes a cylinder body 71, a piston disc 72 and a piston rod 73. The piston disc 72 is movably installed in the inner cavity of the cylinder body 71 and divides the inner cavity of the cylinder body 71 into a first chamber and a second chamber. The piston rod 73 is connected to the piston disc 72 and extends out of the cylinder body 71. The piston rod 73 is hinged to the connecting rod 61, and the cylinder body 71 is hinged to the mounting frame 1. A channel 9 for connecting the first chamber and the second chamber is provided on the cylinder body 71, and a valve 91 for adjusting the connectivity of the channel 9 is provided at the channel 9.

[0054] During the rotation of the connecting rod 61 relative to the swing arm 6, that is, the movement of the cutting electrode 41 driven by the slide 3, the piston disc 72 squeezes the first chamber or the second chamber to drive the air to flow between the two chambers through the channel 9, and the connectivity at the channel 9 is adjusted by the valve 91, that is, the air flow at the channel 9 is adjusted by the valve 91 to achieve the throttling buffering effect, and the buffering force can be adjusted according to the operator's usage habits in cooperation with the valve 91, thereby achieving the buffering function of the movement process of the cutting electrode 41 and being able to adjust the buffering force of the buffering process to facilitate the operator's operation and use, which can effectively reduce safety accidents caused by operating errors.

[0055] Specifically, the elastic member 63 is a torsion spring, which is installed at the connection between the connecting rod 61 and the swing arm 6 and is used to drive the connecting rod 61 and the swing arm 6 to move closer to each other.

[0056] Specifically, the slide seat 3 is provided with a positive electrode brush sheet 36 and a negative electrode brush sheet 37 which are bent, and the annular seat 4 is provided with a positive electrode conductive ring 43 and a negative electrode conductive ring 44. The positive electrode brush sheet 36 elastically abuts against the positive electrode conductive ring 43, and the negative electrode brush sheet 37 elastically abuts against the negative electrode conductive ring 44. The positive electrode brush sheet 36 and the negative electrode brush sheet 37 are used to connect the positive and negative electrodes of an external power supply. The bent positive electrode brush sheet 36 and the negative electrode brush sheet 37 elastically abut against the positive electrode conductive ring 43 and the negative electrode conductive ring 44 respectively under the elastic action of their own metal sheets, and power is supplied to the cutting electrode 41 through the two conductive rings. After the cutting electrode 41 adjusts its angular position, the cutting electrode 41 can still be kept in a powered-on state, that is, the operator is allowed to adjust the angular position of the cutting electrode 41 when it is powered on, which is convenient for operation and use.

[0057] Specifically, the electrode is provided with a mounting tube 41 for being movably sleeved on the outer circumference of the steel casing 111 .

[0058] The cutting electrode 41 can be detachably mounted on the annular seat 4 by means of snap-fitting, plug-fitting or elastic snap-fitting, so that the operator can conveniently replace electrodes of different shapes according to surgical needs.

[0059] The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the above technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention belong to the protection scope of the present technical solution.

Claims

1. A prostate surgery electrosurgical device, characterized in that: include: A mounting frame, on which an endoscope, a mounting tube and a handle are arranged; A slide seat, the slide seat is movably mounted on the mounting tube, an annular seat is rotatably arranged on the slide seat, a cutting electrode is mounted on the annular seat, and a steel sleeve passing through the slide seat and the mounting tube is arranged on the endoscope; An adjusting assembly, the adjusting assembly being arranged on the sliding seat and used for adjusting the angular position of the annular seat; A swing arm, one end of the swing arm is hingedly arranged on the mounting frame, the other end of the swing arm is hingedly arranged with a connecting rod, the connecting rod is hingedly connected to the sliding seat, a handle is arranged on the connecting rod, an elastic member is installed at the connection between the connecting rod and the swing arm, and the elastic member is used to drive the connecting rod and the swing arm to move closer to each other; A buffer assembly is connected to the swing arm and the connecting rod respectively and is used to buffer the rotation process between the swing arm and the connecting rod.

2. The electrosurgical resection device for prostate surgery according to claim 1, characterized in that: The mounting tube is provided with a slide groove for the movable installation of the slide seat, the annular seat is coaxially provided with a first bevel gear, the middle of the first bevel gear is provided with a through hole for the steel casing to pass through, the slide seat is rotatably provided with a second bevel gear meshing with the first bevel gear, the second bevel gear is coaxially provided with a transmission shaft, the transmission shaft passes through the slide groove, and the adjustment component is transmission-connected to the transmission shaft and is used to drive the transmission shaft to rotate.

3. The electrosurgical resection device for prostate surgery according to claim 1, characterized in that: The adjustment assembly includes a driving bevel gear, a transmission bevel gear and a rotating handle. The transmission bevel gear is coaxially arranged with the transmission shaft, the driving bevel gear is meshed with the transmission bevel gear, and the rotating handle is rotatably mounted on the slide and coaxially connected with the driving bevel gear.

4. The electrosurgical resection device for prostate surgery according to claim 3, characterized in that: The turning handle is provided with a connecting shaft connected to the driving bevel gear, the sliding seat is provided with a sleeve for the connecting shaft to pass through, the sleeve is movably provided with a limit block, the limit block cannot rotate relative to the sleeve, the limit block is provided with a crown gear ring, the driving bevel gear is provided with a crown tooth portion meshing with the crown gear ring, the sleeve is sleeved with a spring, the spring pushes the limit block to drive the crown gear ring to mesh with the crown tooth portion.

5. The electrosurgical resection device for prostate surgery according to claim 4, characterized in that: The sleeve is a square tube, and the limiting block is provided with a square groove for the square tube to slide through.

6. The electrosurgical resection device for prostate surgery according to claim 4, characterized in that: A rocker arm is rotatably provided on the sliding seat, an arc block is provided on the rocker arm, an arc groove for the sleeve to slide through is provided on the arc block, a sliding shovel portion is provided on the arc block, and an abutment portion for the sliding shovel portion to abut is provided on the limit block, the sliding shovel portion is used to abut against the limit block to drive the crown gear ring to bite tightly on the crown gear portion, and the rocker arm is used to drive the sliding shovel portion to approach or move away from the limit block.

7. The electrosurgical resection device for prostate surgery according to claim 1, characterized in that: The buffer assembly includes a cylinder body, a piston disc and a piston rod. The piston disc is movably installed in the inner cavity of the cylinder body and divides the inner cavity of the cylinder body into a first chamber and a second chamber. The piston rod is connected to the piston disc and extends out of the cylinder body. The piston rod is hinged to the connecting rod, and the cylinder body is hinged to the mounting frame. The cylinder body is provided with a channel for connecting the first chamber and the second chamber, and a valve is provided at the channel for adjusting the connectivity of the channel.

8. The electrosurgical resection device for prostate surgery according to claim 1, characterized in that: The elastic member is a torsion spring, which is installed at the connection between the connecting rod and the swing arm and is used to drive the connecting rod and the swing arm to move closer to each other.

9. The electrosurgical resection device for prostate surgery according to claim 1, characterized in that: The sliding seat is provided with a bent positive brush sheet and a negative brush sheet, and the annular seat is provided with a positive conductive ring and a negative conductive ring. The positive brush sheet elastically abuts against the positive conductive ring, and the negative brush sheet elastically abuts against the negative conductive ring. The positive brush sheet and the negative brush sheet are used to connect the positive and negative poles of an external power supply.

10. The electrosurgical resection device for prostate surgery according to claim 1, characterized in that: The electrode is provided with a mounting tube for movably sleeved on the outer periphery of the steel casing.

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