Curved controllable electrode and system thereof

Abstract

The present invention relates to the field of medical ablation technology, specifically a bendable controllable electrode and its system, comprising an outer tube, the proximal end of which is fixedly mounted on a handle and the distal end of which is provided with an outer bendable section; an inner tube, movably mounted within the outer tube and movable along the axis of the outer tube, the distal end of which is provided with an inner bendable section; and a plasma electrode, disposed on the distal end face of the inner tube. The present invention provides independent bend adjustment mechanisms for the inner and outer tubes, achieving two-directional bend control, enabling the plasma electrode to flexibly change direction within complex surgical corridors, thereby improving the coverage and accuracy of the ablation range.

Description

Technical Field

[0001] The present invention relates to the technical field of medical ablation, and in particular to a bendable controllable electrode and a system thereof. Background Art

[0002] Bipolar electrodes are widely used in clinical surgery, primarily for tissue cutting, coagulation, and hemostasis. However, traditional bipolar electrodes have a fixed sheath angle and lack flexible adjustment capabilities. This results in blind spots when operating in areas with limited space or complex anatomical structures, affecting surgical accuracy and ease of operation.

[0003] Existing bipolar flexible electrodes typically only have a single electrocoagulation function and lack suction and injection channels. During surgery, tissue cutting is often accompanied by fluid leakage or blood loss. Without suction and injection functions, the operation is bound to increase complexity and risk.

[0004] In order to solve the above problems, a bendable controllable electrode and its system are urgently needed. Summary of the Invention

[0005] In order to solve the deficiencies mentioned in the above background technology, the purpose of the technical solution disclosed in the present invention is to provide a bendable controllable electrode and a system thereof, which solves the problem of limited adjustment area of the bend electrode in the prior art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A bendable controllable electrode, comprising:

[0008] an outer tube, the proximal end of which is fixedly mounted on the handle and the distal end of which is provided with an outer bendable section;

[0009] An inner tube is movably disposed in the outer tube, the inner tube being movable along the axis of the outer tube, and the distal end of the inner tube is provided with an inner bendable section;

[0010] The plasma electrode is arranged on the distal end surface of the inner tube.

[0011] Furthermore, a bending controllable electrode system is proposed, comprising an electrode and a host;

[0012] The electrodes include:

[0013] an outer tube, the proximal end of which is fixedly mounted on the handle and the distal end of which is provided with an outer bendable section;

[0014] An inner tube is movably disposed in the outer tube, the inner tube being movable along the axis of the outer tube, and the distal end of the inner tube is provided with an inner bendable section;

[0015] The plasma electrode is arranged on the distal end surface of the inner tube.

[0016] The host is connected to the handle via a cable, and the cable is provided with circuits for power transmission and signal transmission.

[0017] Beneficial effects of the present disclosure:

[0018] 1. The present invention provides independent bending adjustment mechanisms for the inner and outer tubes to achieve bending control in two directions, so that the plasma electrode can flexibly change direction within a complex surgical channel, thereby improving the coverage and accuracy of the ablation range.

[0019] 2. The present invention provides liquid injection and discharge channels at the front end of the electrode, which can create the environment required for plasma excitation, especially when performing nerve ablation treatment in the bone, thereby ensuring the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of an inner tube according to an embodiment of the present invention;

[0023] Figure 3 Schematic diagram of a plasma electrode according to an embodiment of the present invention;

[0024] Figure 4 is a schematic diagram of a handle according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal installation of the handle of an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of the handle of an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal tube control structure of an embodiment of the present invention;

[0028] Figure 8 is a schematic diagram of a horizontal sliding module according to an embodiment of the present invention;

[0029] Figure numbers: handle-1, outer tube-2, inner tube-3, push block-4, adjustment trigger-5, plasma electrode-6, mounting groove-101, friction ring-102, waist-shaped through hole-103, first mounting axis-104, roller opening groove-105, fourth mounting axis-106, second mounting axis-107, trigger mounting groove-108, third mounting axis-109, curved snake bone-21, cylindrical structure-32, isolation plate-33, detection circuit-301, emitter wiring harness-302, loop electrode wiring harness-303, opening groove-34, emitter electrode-61, loop Pole electrode 62, harness mounting hole 602, liquid channel 603, side through hole 604, insertion boss 601, horizontal sliding module 71, inner tube mounting groove 711, traction rope guide groove 712, pipeline interface 714, adjustment slider 72, fixed pressure block 721, friction surface 722, first roller 73, rotating rod 74, first gear 741, compensation cam 75, inward-bending traction rope guide groove 751, tail roller 76, adjustment roller 761, inward-bending traction rope fixing plate 762, fan gear 77, connecting rod 78. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be explained that for the sake of convenience in the description of the disclosed solution, the end far away from the operator is described as "front end", "distal end" and similar descriptions, and the end close to the operator is described as "proximal end", "rear end" and similar descriptions.

[0032] This invention addresses the issues of conventional bipolar electrodes, such as insufficient operational flexibility, limited functionality, and a lack of intelligent feedback, by proposing a bendable electrode. This electrode utilizes a nested outer tube-inner tube design: the outer tube's proximal end is fixed to the handle, with an outer bendable section at its distal end. The inner tube is movably positioned within the outer tube, movable along its axis, and equipped with an inner bendable section at its distal end. This creates a secondary bend, with independent control of both sections enabling multi-degree-of-freedom spatial positioning of the plasma electrode, thus overcoming the operational blind spots of conventional instruments in narrow cavities.

[0033] like Figure 1 - Figure 8 As shown, the bendable controllable electrode and its system include a handle 1; an inserting portion is extended from the handle 1; the inserting portion includes an outer tube 2 and an inner tube 3;

[0034] The proximal end of the outer tube 2 is fixedly mounted on the handle 1, and the distal end thereof is provided with an outer bendable section;

[0035] The inner tube 3 is movably arranged in the outer tube 2, and the inner tube 3 can move along the axis of the outer tube 2. The distal end of the inner tube 3 is provided with an inner bendable section;

[0036] A plasma electrode 6 is provided on the distal end surface of the inner tube 3 .

[0037] like Figure 5 As shown, in some implementations, the proximal end of the inner tube 3 is mounted on a horizontal sliding module 71;

[0038] The plasma electrode 6 is provided on the distal end surface of the inner tube 3 . The plasma electrode 6 includes two electrode blocks, which are an emitter electrode 61 and a return electrode 62 .

[0039] With this design, during surgical ablation, after the insertion unit enters the patient's body, the outer flexible section at the distal end of outer tube 2 and the inner flexible section at the distal end of inner tube 3 are adjusted as needed to adjust the position of plasma electrode 6 to the nearest operating area. The insertion unit includes independently controllable outer and inner flexible sections, allowing the distal end of the plasma electrode to achieve precise positioning at multiple angles and directions in space, thereby adapting to the needs of different surgical channels and anatomical structures, improving the adaptability and flexibility of the system. The activation of plasma electrode 6 can accomplish operations such as tissue ablation, hemostasis and coagulation, tissue cutting, tissue dissection, wound disinfection, necrotic tissue removal, intraoperative debridement and anti-seepage, and localized heat transfer.

[0040] At the same time, the movement of the horizontal sliding module 71 can drive the movement of the inner tube 3, so that the relative position of the inner tube 3 and the outer tube 2 can be adjusted, and the length of the inner tube 3 extending out of the end face of the outer tube 2 can be adjusted. It can be understood that adjusting the length of the inner tube 3 extending out of the end face of the outer tube 2 will affect the conditional angle of the inner bendable section at the distal end of the inner tube 3 and the curvature of the front end position; through the above design, a more flexible adjustment angle can be obtained, so that the working point can reach a place that a single adjustment bending section cannot reach.

[0041] In some disclosures, the outer bendable section provided at the distal end of the outer tube 2 and the inner bendable section provided at the distal end of the inner tube 3 may be a mechanically bendable structure or a flexible material;

[0042] The mechanically bendable structure may be a snake-bone, articulated structure, a cable-driven structure, a spring-coil structure, a multi-segmented drive structure, a bellows-coupled cable-driven structure, or a multi-segment articulated structure;

[0043] The flexible material may be a shape memory alloy, a flexible polymer composite material, silicone, a flexible plastic or other soft material.

[0044] like Figure 1 As shown, the outer bendable section at the distal end of the outer tube 2 is configured as a bending snake bone 21 , and the bending snake bone 21 is controlled by two traction ropes.

[0045] like Figure 2 As shown, the inner bendable section of the inner tube 3 is made of flexible plastic. A second channel 3b and a fourth channel 3d are provided through the inner tube 3. The second channel 3b and the fourth channel 3d are provided with an emitter wire bundle 302 and a return wire bundle 303 respectively. The second channel 3b and the fourth channel 3d are evenly distributed around the circumference.

[0046] The distal ends of the emitter and return wires 302, 303 are fixedly connected to the emitter and return electrodes 61, 62, respectively. This arrangement allows for traction on either of the two wires, tightening the pulled wires and causing the inner flexible section of the inner tube 3 to bend toward the tightened side. The flexible material provides excellent deformation and rebound properties. Combined with wire traction control, this allows for rapid response and smooth directional adjustment, preventing damage to surrounding tissue and enhancing the overall flexibility and controllability of the device.

[0047] It is understandable that the inner bendable section of the inner tube 3 can be controlled by the emitter wire harness 302 and the return wire harness 303, or by a separately provided inner bend traction rope.

[0048] like Figure 2 As shown, in some embodiments, the distal end of the inner tube 3 is provided with a spacer 33; Figure 3 As shown, the emitter electrode 61 and the return electrode 62 have the same structure; the electrode block is semi-cylindrical as a whole, and a harness mounting hole 602 for mounting a harness is provided at the lower end; the electrode is made of high-temperature resistant materials such as stainless steel and titanium alloy.

[0049] like Figure 2 As shown, in some embodiments, the inner tube 3 is provided with a first channel 3a and a third channel 3c penetrating therethrough, and the first channel 3a and the third channel 3c are evenly distributed around the circumference.

[0050] In some disclosures, the center of the isolation plate 33 is cylindrical 32, and the inner side of the emitter electrode 61 and the return electrode 62 is provided with a semicircular mounting groove 605 that cooperates with the cylindrical shape 32, thereby distinguishing the four channels and ensuring the stability of the electrodes after installation.

[0051] It can be understood that the first channel 3a and the third channel 3c are suitable for use as liquid injection channels and liquid discharge channels in some cases. No other settings may be made to the distal end of the inner tube 3, and the liquid is directly injected and discharged from the end face of the inner tube 3. In some cases, interfaces can also be set at the distal ends of the first channel 3a and the third channel 3c; the liquid inlet and outlet design improves the uniformity and coverage of liquid distribution, enhances the intraoperative flushing and cooling effects, and improves the visibility and safety of the operating area.

[0052] like Figure 3 As shown, in some embodiments, a liquid channel 603 is provided on the electrode block, and the proximal end of the liquid channel 603 is connected to the first channel 3a or the third channel 3c. In this way, the outlet and inlet of the liquid can be set at any position of the electrode; according to different surgical requirements and electrode designs, the liquid outlet can be arranged at any position of the electrode block to adapt to different anatomical areas and operating angles.

[0053] Preferably, in some cases the liquid channel 603 can be set as a through hole, and the liquid inlet and outlet can be set on the distal surface of the electrode block. At the same time, a side through hole 604 interconnected with the liquid channel 603 can be opened on the side of the electrode block as needed; through the multi-hole outlet setting at the distal end + side of the electrode block, the liquid is distributed more evenly in the surgical area, effectively improving the cleaning and cooling efficiency, which is particularly suitable for large-scale tissue operations or ablation.

[0054] like Figure 3 As shown, in some embodiments, a plurality of insertion bosses 601 are provided at the distal end of the electrode block, and the insertion bosses 601 match the cross-sections of the first channel 3a, the second channel 3b, the third channel 3c, and the fourth channel 3d. During installation, the insertion bosses 601 are respectively inserted into the first channel 3a, the second channel 3b, the third channel 3c, and the fourth channel 3d; the insertion boss 601 structure provides a reliable mechanical connection method to ensure the stability and positioning accuracy of the electrode block at the end of the inner tube, avoid loosening or displacement of the electrode during use, and improve the overall system safety and service life. At the same time, the sealing can be completed by cooperating with the channel through the insertion boss 601.

[0055] In some publications, to determine the electrode's location, the system collects impedance change signals between the emitter electrode 61 and the return electrode 62. By analyzing the impedance characteristics between the two electrodes at the working end, tissue identification can be achieved. This means determining the tissue type in the current electrode area based on impedance differences. For example, cortical bone has low conductivity, cancellous bone has medium conductivity, and periosteum and blood have high conductivity. This allows identification of tissue types such as saline, general soft tissue, annulus fibrosus, nucleus pulposus, or ligaments. This function can assist in intraoperative tissue identification, improving surgical accuracy and safety.

[0056] In some embodiments, the handle 1 is provided with a mounting slot for mounting the horizontal sliding module 71, such as Figure 2 、 Figure 5 、 Figure 8 As shown, the horizontal sliding module 71 is provided with an inner tube mounting groove 711 for mounting the inner tube 3;

[0057] Preferably, Figure 2 As shown, in some disclosures, the proximal ends of the first channel 3a and the third channel 3c of the inner tube 3 are provided with an open groove 34, the cross-section of the inner tube mounting groove 711 matches the proximal end face of the inner tube 3, the proximal end of the inner tube mounting groove 711 is provided with a baffle for sealing the open groove 34, and the horizontal sliding module 71 is provided with two pipe interfaces 714 respectively connected to the sealed open groove 34; through such a design, during installation, the proximal end of the inner tube 3 is directly inserted into the inner tube mounting groove 711, at which time the second channel 3b and the fourth channel 3d are exposed at the proximal end of the inner tube mounting groove 711, and the open groove 34 contacts the proximal baffle of the inner tube mounting groove 711 to complete the sealing;

[0058] It will be appreciated that during use, the liquid inlet and outlet lines are connected to the line interface 714, respectively. After passing through the line interface 714, the liquid communicates with the enclosed cavity formed by the opening groove 34 and the inner tube mounting groove 711, and then with the second channel 3b or the fourth channel 3d through the enclosed cavity. This design directly utilizes the cavity where the inner tube 3 is mounted as the liquid channel, ensuring a compact structure. Furthermore, the horizontal sliding module 71 is used to connect the second channel 3b or the fourth channel 3d to the external pipeline, thereby ensuring the stability of the connection during movement of the horizontal sliding module 71.

[0059] In some disclosures, a fifth channel 3e is provided at the center of the inner tube 3, and a detection circuit 301 is provided in the fifth channel 3e. The front end of the detection circuit 301 is a detection point, which can be used to detect one or more of resistance, temperature, and pressure.

[0060] In some embodiments, as Figure 1 、 Figure 2 As shown, a fifth channel 3e is provided at the center of the inner tube 3. This fifth channel 3e is a through-hole structure that accommodates a detection circuit 301. A detection point is provided at the front end of the detection circuit 301, which can be used to collect key parameters of the surgical area in real time, including but not limited to one or more physical quantities such as resistance, temperature, and pressure. This signal is transmitted through the five-lumen tube, and the host's temperature control function automatically adjusts the electrode energy output to prevent heat loss.

[0061] Furthermore, some publications describe a temperature sensor integrated into the detection circuit 301, located near the plasma electrode, for real-time monitoring of temperature changes at the electrode's working end. This temperature signal is transmitted to the host control system via a fifth channel 3e. In conjunction with the host's temperature management function, the electrode's output energy is automatically adjusted based on actual temperature changes, achieving closed-loop control. This prevents intraoperative overheating that could cause tissue carbonization or thermal damage to adjacent structures, enhancing system operation intelligence and tissue protection capabilities.

[0062] In some embodiments, as Figure 1 、 Figure 2 、 Figure 5 and Figure 8 As shown, the handle 1 not only serves as the main structure for the operator to hold the system, but also integrates a variety of control and connection functional components for achieving precise manipulation of the insertion part and integrated control of system functions.

[0063] The handle 1 houses a traction mechanism for adjusting the bending state of the outer tube 2 and inner tube 3. This traction mechanism includes multiple rotary knobs or sliding adjustment devices, each connected to the traction rope of the outer bendable section and the wiring harness of the inner bendable section. The operator can adjust the knobs or sliders to tighten or loosen the traction rope or wiring harness, thereby bending the outer or inner bendable section to the desired angle, achieving multi-directional and precise positioning of the electrode tip within the surgical field of view.

[0064] A channel structure for accommodating and fixing the wiring harness is provided inside the handle 1. The emitter wiring harness 302 and the return wiring harness 303 are respectively led out through the handle and connected to the external high-frequency electrosurgery host to realize energy output control.

[0065] At the same time, a signal lead interface for the detection circuit 301 is also provided in the handle. The interface is connected to the data port of the host to transmit the temperature, resistance and other detection signals from the fifth channel 3e to the main control system in real time, and is used in conjunction with the system's automatic identification or temperature control feedback function.

[0066] A horizontal sliding module 71 is also located within the handle 1 to support and guide the axial movement of the inner tube 3. The operator can slide the inner tube 3 back and forth within the outer tube 2 by sliding a button or rotating the control mechanism, adjusting the extension of the plasma electrode 6 to accommodate different depths or angles. The sliding module 71 is designed with a guide rail limiter to prevent the inner tube from being excessively extended or retracted.

[0067] In a further preferred embodiment, the handle 1 may also be integrated with a safety lock button or adjustment level structure for quickly locking the electrode position after adjustment to prevent misoperation during surgery. In addition, an LED status light, an electrode excitation status indicator light, or an overheating alarm light may be provided to provide real-time feedback on system status and enhance intraoperative safety.

[0068] Through the above structural setting, the handle 1 realizes the combination of structural integration, modular operation and humanized use, which not only facilitates the operator to complete the comprehensive control of the insertion position, angle, liquid, energy output, etc., but also improves the overall response speed and clinical adaptability of the system, and significantly enhances the practicality and safety of the ablation system.

[0069] like Figure 1 、 Figure 4 As shown, the handle 1 is provided with a mounting slot 101, and a friction ring 102 is provided on the proximal side of the mounting slot 101. The friction ring 102 is waist-shaped and has a waist-shaped through hole 103 therein; a first mounting shaft 104 is provided on the proximal side of the waist-shaped through hole 103;

[0070] The horizontal sliding module 71 is movably mounted in the mounting slot 101 , a first roller 73 is movably mounted on the first mounting shaft 104 , and an adjusting slider 72 is movably mounted in the waist-shaped through hole 103 ;

[0071] The outer bendable section at the distal end of the outer tube 2 is configured as a bending serpentine 21. The bending serpentine 21 is controlled by a traction rope 14. The traction rope 14 is fixed at both ends to the front end of the serpentine, and then passes through the serpentine in sequence and is tensioned after passing through the first roller 73. The specific configuration of the serpentine can refer to existing serpentine technology. In the present disclosure, a one-piece cut serpentine is preferred for ease of processing.

[0072] like Figure 7 As shown, the adjustment slider 72 is fixedly connected to the traction rope 14 at a point between the first roller 73 and the horizontal sliding module 71. Specifically, a fixed pressure block 721 is provided on the adjustment slider 72. The traction rope 14 on one side of the first roller 73 is disposed between the adjustment slider 72 and the fixed pressure block 721 and is fixed by the pressure between the adjustment slider 72 and the fixed pressure block 721. The outer side of the adjustment slider 72 is provided with a friction surface 722 that cooperates with the friction ring 102. The outer side of the adjustment slider 72 is connected to a push block 4, which is disposed on the side of the handle 1. With this design, the traction rope 14 is first tensioned by the first roller 73. Then, the position of the adjustment slider 72 is adjusted by the push block 4. The movement of the adjustment slider 72 drives the movement of the traction rope 14, which then moves along the first roller 73, tightening and loosening the traction rope 14 on both sides of the first roller 73.

[0073] It can be understood that when the traction rope 14 above the first roller 73 is connected and fixed to the adjusting slider 72, when the adjusting slider 72 moves toward the rear end, the traction rope 14 above the first roller 73 is tightened, and the traction rope 14 below the first roller 73 is relaxed. At this time, the curved snake bone 21 bends toward the tightened side of the traction rope.

[0074] like Figure 8 As shown, the upper and lower end surfaces of the horizontal sliding module 71 are provided with traction rope guide grooves 712, and the traction rope 14 from the curved snake bone 21 to the first roller 73 is arranged in the traction rope guide groove 712, so as to avoid dislocation and abnormal friction of the traction rope 14 when the horizontal sliding module 71 moves.

[0075] The horizontal sliding module 71 mentioned in the present disclosure can be driven to and fro by manual sliding, motor, etc.

[0076] like Figure 4 、 Figure 5 、 Figure 6 As shown, the driving method of the horizontal sliding module 71 is as follows; a second mounting shaft 107 is provided in the handle 1, and a rotating rod 74 is installed on the second mounting shaft 107. A connecting rod 78 is provided between the rotating rod 74 and the horizontal sliding module 71, and both ends of the connecting rod 78 are movably hinged on the rotating rod 74 and the horizontal sliding module 71 respectively; in this way, the movement of the horizontal sliding module 71 can be driven by the rotation of the rotating rod 74; it can be understood that the rotating rod 74 can be manually driven or electrically driven.

[0077] like Figure 6 As shown, in some disclosures, the rotating rod 74 is provided with a first gear 741, the handle 1 is provided with a third mounting shaft 109, the third mounting shaft 109 is provided with a sector gear 77, the sector gear 77 is meshed with the first gear 741, and the sector gear 77 is provided with an adjustment trigger 5;

[0078] like Figure 1 、 Figure 6 As shown, the handle 1 is pistol-shaped as a whole, including a gripping portion 11 and a connecting portion 12; a trigger mounting groove 108 for mounting an adjustment trigger 5 is provided on the finger gripping side of the gripping portion 11, and the adjustment trigger 5 is located in the trigger mounting groove 108 and protrudes.

[0079] Furthermore, in some disclosures, a torsion spring is provided between the third mounting shaft 109 and the sector gear 77 , and the torsion spring applies a torque to the sector gear 77 to ensure that the initial position of the horizontal sliding module 71 is at the farthest end when no external force is applied.

[0080] It is understood that in order to ensure that the initial position of the horizontal sliding module 71 is fixed and has a tendency to move toward the fixed initial position without applying external force, a continuous driving force can be applied to the adjustment trigger 5, the sector gear 77, the first gear 741, and the horizontal sliding module 71. The driving force can be applied by a spring, a torsion spring, and the elastic force of the material itself. Figure 1 、 Figure 4 、 Figure 6 As shown, in some disclosures, a fourth mounting shaft 106 is provided in the handle 1, a roller opening slot 105 is provided on the side of the fourth mounting shaft 106, and the tail roller 76 is movably mounted on the fourth mounting shaft 106, and the tail roller 76 includes an adjusting roller 761 and a fixing plate 762 for fixing the inner-bend traction rope. The adjusting roller 761 is located in the roller opening slot 105 and protrudes from the handle 1. When in use, the inner-bend traction rope is driven by pushing the adjusting roller 761 to complete the control of the posture angle of the inner bendable section provided at the distal end of the inner tube 3.

[0081] It can be understood that the inner curving traction rope in the above solution can be the emitter wire harness 302 and the return wire harness 303 or a separately provided inner curving traction rope.

[0082] In some embodiments, the distal end of the inner tube 3 is provided with an inner bendable section which is driven by a first inner bend traction rope 15 and a second inner bend traction rope 16. In order to ensure the tensioning state of the inner bend traction rope 15 when the horizontal sliding module 71 moves, a cam is provided to compensate for the length of the inner bend traction rope when the horizontal sliding module 71 moves.

[0083] like Figure 5 、 Figure 6 As shown, the first gear 741 is provided with a compensation cam 75, and two inward-bending traction rope guide grooves 751 are provided on the outer side of the compensation cam 75. The handle 1 is provided with a tail roller 76. The distal end of the inward-bending traction rope is fixed at the distal end of the inner bendable section, passes through the inner tube mounting groove 711, passes through the inward-bending traction rope guide grooves 751, and is connected to the drive device. In some disclosures, the drive device is the tail roller 76. With this design, when the position of the inner tube 3 is adjusted, the compensation cam 75 rotates, and compensation is achieved by changing the contact position between the compensation cam 75 and the inward-bending traction rope. In some embodiments, the bottom of the handle 1 is provided with an integrated access port, and the liquid pipeline and control harness are arranged in a low-position centralized manner: the first channel 3a and the third channel 3c are respectively connected to the external perfusion / suction equipment through liquid pipelines, and the emitter harness 302, the return harness 303, and the detection circuit 301 signal lines are connected through a color-coded shielded cable set.

[0084] A bendable electrode system consisting of a bendable electrode, a liquid management unit, and a main unit, enabling energy transmission and data exchange via a cable. The main unit integrates a high-frequency energy output module and an intelligent analysis system, and is connected to the handle via a multi-core cable. The cable houses a plasma excitation circuit, an impedance detection circuit, a temperature signal line, and a liquid pipeline.

[0085] The main unit has a built-in impedance analysis module that collects real-time impedance spectrum data between the emitter electrode and the return electrode. Combined with a pre-stored tissue conductivity database, it uses dynamic impedance to identify tissue types. During surgery, if the electrode contacts bony tissue, the main unit automatically triggers an audible and visual alarm and limits output power to prevent thermal damage to the bony structure. The fluid management unit utilizes a dual-pump linkage design, delivering pulsed flushing and negative pressure drainage through the first and third channels of the inner tube, respectively, to maintain a clear surgical field.

[0086] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A bendable controllable electrode, characterized in that: The electrodes include: an outer tube, the proximal end of which is fixedly mounted on the handle and the distal end of which is provided with an outer bendable section; An inner tube is movably disposed in the outer tube, the inner tube being movable along the axis of the outer tube, and the distal end of the inner tube is provided with an inner bendable section; a plasma electrode, disposed on the distal end surface of the inner tube; A horizontal sliding module is provided in the handle, and an inner tube mounting groove for mounting the inner tube is provided in the horizontal sliding module, and the distal end of the inner tube is fixedly mounted on the horizontal sliding module; A rotating rod is installed in the handle, and a connecting rod is provided between the rotating rod and the horizontal sliding module, and both ends of the connecting rod are movably hinged on the rotating rod and the horizontal sliding module respectively; A first gear is provided on the rotating rod, a sector gear is provided in the handle, the sector gear and the first gear are meshed with each other, an adjustment trigger is provided on the sector gear, and the adjustment trigger protrudes from the housing; A compensation cam is provided on the first gear, and two inward-bending traction rope guide grooves are provided on the outer side of the compensation cam, which are used to control the traction rope for controlling the posture of the inner bendable section, pass through the inner tube mounting groove, and then pass through the inward-bending traction rope guide groove to be connected to the driving device.

2. The bendable controllable electrode according to claim 1, characterized in that: The inner bendable section and the outer bendable section are one of a snake bone, an articulated structure, a spring coil, a multi-segment segmented structure, a bellows, a multi-segment hinged structure or a flexible material.

3. The bendable controllable electrode according to claim 1, characterized in that: The plasma electrode comprises an emitter electrode and a return electrode, and an isolation plate is provided between the emitter electrode and the return electrode.

4. The bendable controllable electrode according to claim 1, characterized in that: The inner bendable section is made of flexible material, and a second channel and a fourth channel are opened on the inner tube. The second channel and the fourth channel are respectively arranged with an emitter wiring harness and a loop wiring harness. The emitter wiring harness and the loop wiring harness are used for adjusting the posture of the inner bendable section.

5. The bendable controllable electrode according to claim 4, characterized in that: The inner tube is provided with a first channel and a third channel running through the inner tube. The first channel and the third channel are used as liquid injection channels and liquid discharge channels.

6. The bendable controllable electrode according to claim 5, characterized in that: The first channel, the second channel, the third channel and the fourth channel are distributed in a circumferential manner.

7. The bendable controllable electrode according to claim 5, characterized in that: The plasma electrode is provided with a liquid channel, and the proximal end of the liquid channel is communicated with the first channel or the third channel.

8. The bendable controllable electrode according to claim 7, characterized in that: A side through hole communicating with the liquid channel is provided on the side surface of the plasma electrode.

9. The bendable controllable electrode according to claim 5, characterized in that: An opening groove is provided at the proximal end of the first channel and the third channel of the inner tube, the cross-section of the inner tube mounting groove matches the proximal end face of the inner tube, a baffle for sealing the opening groove is provided at the proximal end of the inner tube mounting groove, and two pipeline interfaces respectively connected to the sealed opening grooves are provided on the horizontal sliding module.

10. The bendable controllable electrode according to claim 1, characterized in that: A fifth channel is provided at the center of the inner tube, a detection circuit is provided in the fifth channel, the front end of the detection circuit is a detection point, and the detection point is located at the front end of the plasma electrode.

11. The bendable controllable electrode according to claim 9, characterized in that: The handle is provided with a mounting slot, a friction ring is provided on the proximal side of the mounting slot, the friction ring is waist-shaped and has a waist-shaped through hole; a first mounting shaft is provided on the proximal side of the waist-shaped through hole; The horizontal sliding module is movably mounted in the mounting slot, a first roller is movably mounted on the first mounting shaft, and an adjusting slider is movably mounted in the waist-shaped through hole; The outer bendable section at the distal end of the outer tube is configured as a bending snake bone, and the bending snake bone is controlled by a traction rope. The two ends of the traction rope are fixed to the front end of the snake bone and then pass through the snake bone in sequence and are tensioned after passing through the first roller; The adjusting slide block is fixedly connected to a point on the traction rope located between the first roller and the horizontal sliding module.

12. The bendable controllable electrode according to claim 1, characterized in that: A tail roller is provided in the handle, which includes an adjusting roller and a fixing plate for fixing the inward-bending traction rope. The adjusting roller partially protrudes from the handle, and the inward-bending traction rope is driven by pushing the adjusting roller to complete the posture control of the inner bendable section at the far end of the inner tube.

13. A bendable controllable electrode system, characterized in that: Comprising a bendable controllable electrode and a host as described in any one of claims 1-12; The host is connected to the handle via a cable, and the cable is provided with circuits for power transmission and signal transmission.

14. The bendable controllable electrode system according to claim 13, characterized in that: The bending controllable electrode system collects impedance change signals between the emitter electrode and the return electrode and realizes the tissue recognition function by monitoring the impedance between the two electrodes of the working end.

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