Bending controllable electrode and system thereof

Abstract

The invention relates to the technical field of medical ablation, in particular to a bending controllable electrode and a system thereof.The bending controllable electrode comprises an outer tube, the near end of the outer tube is fixedly arranged on a handle, and the far end of the outer tube is provided with an outer bendable section; the inner tube is movably arranged in the outer tube, the inner tube can move along the axis of the outer tube, and an inner bendable section is arranged at the far end of the inner tube; and the plasma electrode is arranged on the far-end end face of the inner tube. By arranging the independent bending adjusting mechanisms of the inner tube and the outer tube, bending control in two directions is achieved, the plasma electrode can flexibly change the direction in a complex operation channel, and the coverage degree and precision of the ablation range are improved.

Description

Technical Field

[0001] The present invention relates to the field of medical ablation technology, specifically a bendable controllable electrode and its system. Background Art

[0002] Bipolar electrodes have a wide range of applications in clinical surgeries, mainly used for operations such as tissue cutting, coagulation, and hemostasis. However, the sheathing direction of traditional bipolar electrodes is at a fixed angle and does not have the ability to be flexibly adjusted. As a result, when operating in areas with limited space or complex anatomical structures, there are operation blind spots, which affect the accuracy and convenience of the surgery. Existing bipolar bendable electrodes usually only have a single electrocoagulation function and lack suction and injection channels. During the surgery, tissue cutting is often accompanied by the exudation of body fluids or the outflow of blood. Without suction and injection functions, it will inevitably increase the complexity and risk of the surgical operation.

[0003] In view of the above problems, there is an urgent need for a bendable controllable electrode and its system. Summary of the Invention

[0004] To solve the deficiencies mentioned in the above background art, the purpose of the technical solution of the present disclosure is to provide a bendable controllable electrode and its system, which solves the problem of limited adjustment area of the bendable electrode in the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A bendable controllable electrode, the electrode includes: An outer tube, fixedly arranged at the proximal end on the handle, and having an outer bendable section at its distal end; An inner tube, movably arranged inside the outer tube, the inner tube can move along the axis of the outer tube, and the distal end of the inner tube has an inner bendable section; A plasma electrode, arranged at the distal end face of the inner tube.

[0006] Furthermore, a bendable controllable electrode system is proposed, including an electrode and a main unit; The electrode includes: An outer tube, fixedly arranged at the proximal end on the handle, and having an outer bendable section at its distal end; An inner tube, movably arranged inside the outer tube, the inner tube can move along the axis of the outer tube, and the distal end of the inner tube has an inner bendable section; A plasma electrode, arranged at the distal end face of the inner tube.

[0007] The main unit is connected to the handle through a cable, and the cable is provided with circuits for power transmission and signal transmission.

[0008] Advantages of the present disclosure: 1. The present disclosure realizes the bending control in two directions respectively by setting up the independent bending adjustment mechanisms for the inner and outer tubes, enabling the plasma electrode to flexibly change its direction within a complex surgical channel and enhancing the coverage and accuracy of the ablation range.

[0009] 2. The present disclosure creates the environment required for plasma excitation by setting up liquid injection and discharge channels at the front end of the electrode, especially when performing nerve ablation treatment within the bone, thus ensuring the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 is a schematic diagram of the inner tube of an embodiment of the present invention; Figure 3 is a schematic diagram of the plasma electrode of an embodiment of the present invention; Figure 4 is a schematic diagram of the handle of an embodiment of the present invention; Figure 5 is a schematic diagram of the internal installation of the handle of an embodiment of the present invention; Figure 6 is a partial schematic diagram of the internal structure of the handle of an embodiment of the present invention; Figure 7 is a schematic diagram of the inner tube control structure of an embodiment of the present invention; Figure 8 is a schematic diagram of the horizontal sliding module of an embodiment of the present invention; Reference numerals in the drawings: handle - 1, outer tube - 2, inner tube - 3, push block - 4, adjustment trigger - 5, plasma electrode - 6, installation chute - 101, friction ring - 102, kidney-shaped through hole - 103, first mounting shaft - 104, roller opening groove - 105, fourth mounting shaft - 106, second mounting shaft - 107, trigger mounting groove - 108, third mounting shaft - 109, curved snake bone - 21, cylindrical structure - 32, isolation sheet - 33, detection circuit - 301, emitter wire harness - 302, loop electrode wire harness - 303, opening groove - 34, emitter electrode - 61, loop electrode - 62, wire 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 guiding groove - 712, pipeline interface - 714, adjustment slider - 72, fixed pressing block - 721, friction surface - 722, first roller - 73, rotating rod - 74, first gear - 741, compensation cam - 75, inner-bent traction rope guiding groove - 751, tail roller - 76, adjustment turntable - 761, inner-bent traction rope fixing plate - 762, sector gear - 77, connecting rod - 78. Detailed implementation manners

[0011] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0012] It should be explained that for the convenience of description, in the description of the present disclosure solution, the end far from the operator is described by terms such as "front end" and "distal end", and the end close to the operator is described by terms such as "proximal end" and "rear end".

[0013] In view of the problems of insufficient operation flexibility, single function, and lack of intelligent feedback existing in traditional bipolar electrodes, the present invention proposes a bendable controllable electrode. This electrode adopts an outer tube - inner tube nested design: the proximal end of the outer tube is fixedly arranged on the handle, and its distal end is provided with an outer bendable section; the inner tube is movably arranged inside the outer tube, the inner tube can move along the axis of the outer tube, and the distal end of the inner tube is provided with an inner bendable section; forming a two-stage bend, and the two bendable sections are independently controlled to enable the plasma electrode to achieve multi-degree-of-freedom spatial positioning, breaking through the operation blind area of traditional instruments in narrow channels.

[0014] As Figure 1 - Figure 8 shown, the bendable controllable electrode and its system include a handle 1; an insertion part is extendedly arranged on the handle 1; the insertion part includes an outer tube 2 and an inner tube 3; The proximal end of the outer tube 2 is fixedly arranged on the handle 1, and its distal end is provided with an outer bendable section; The inner tube 3 is movably arranged inside the outer tube 2. The inner tube 3 can move along the axis of the outer tube 2, and the distal end of the inner tube 3 is provided with an inner bendable section; The distal end face of the inner tube 3 is provided with a plasma electrode 6.

[0015] As Figure 5 shown, in some embodiments, the proximal end of the inner tube 3 is mounted on a horizontal sliding module 71; The plasma electrode 6 is arranged on the distal end face of the inner tube 3. The plasma electrode 6 includes two electrode blocks, which are respectively an emitter electrode 61 and a return electrode 62.

[0016] With such a design, during the surgical ablation process, after the insertion part enters the patient's body, the outer bendable section at the distal end of the outer tube 2 and the inner bendable section at the distal end of the inner tube 3 are adjusted as needed to adjust the position of the plasma electrode 6 so that it is located in the nearest working area. The insertion part includes an outer bendable section and an inner bendable section that can be independently controlled respectively, enabling the end of the plasma electrode to achieve fine positioning in multiple angles and directions in space, thus meeting the requirements of different surgical channels and anatomical structures and enhancing the adaptability and flexibility of the system. The operations such as ablating tissue, hemostasis and blood coagulation, tissue cutting, tissue peeling, wound disinfection, removing necrotic tissue, intraoperative debridement and hemostasis, and local heat conduction are completed by the excitation of the plasma electrode 6.

[0017] At the same time, the movement of the horizontal sliding module 71 can drive the movement of the inner tube 3. In this way, the relative position between 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, enabling the working point to reach places that cannot be reached by a single adjustable bending section.

[0018] 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 can be a mechanically bendable structure or a flexible material type; The mechanically bendable structure can be a snake bone, a joint structure, a wire-driven structure, a spring coil structure, a multi-segment sectional drive structure, a bellows and wire structure, or a multi-segment articulated structure, etc.; The flexible material type can be soft materials such as shape memory alloy, flexible polymer composite material, silica gel, flexible plastic, etc.

[0019] As Figure 1As shown, the outer bendable section at the distal end of the outer tube 2 is provided as a bending snake bone 21, and the bending snake bone 21 is controlled by two traction ropes.

[0020] As Figure 2 shown, the inner bendable section of the inner tube 3 is made of flexible plastic. A second channel 3b and a fourth channel 3d that penetrate through are provided inside the inner tube 3. An emitter wire harness 302 and a return electrode wire harness 303 are respectively provided in the second channel 3b and the fourth channel 3d, and the second channel 3b and the fourth channel 3d are circumferentially evenly distributed; The distal ends of the emitter wire harness 302 and the return electrode wire harness 303 are fixedly connected to an emitter electrode 61 and a return electrode 62. By setting it like this, when one of the emitter wire harness 302 and the return electrode wire harness 303 is pulled, the wire harness being pulled at this time tightens and drives the inner bendable section of the inner tube 3 to bend towards the side where the wire harness is tightened. The flexible material provides good deformation and resilience characteristics. Combined with wire harness traction control, rapid response and compliant direction adjustment can be achieved, avoiding damage to surrounding tissues and increasing the overall flexible regulation performance of the device.

[0021] It can be understood that the inner bendable section of the inner tube 3 can be controlled by the emitter wire harness 302 and the return electrode wire harness 303, or can be controlled by a separately provided inner bend traction rope.

[0022] As Figure 2 shown, in some embodiments, a separator 33 is provided at the distal end of the inner tube 3; As Figure 3 shown, the emitter electrode 61 and the return electrode 62 have the same structure; the overall electrode block is semi-cylindrical, and a wire harness mounting hole 602 for mounting the wire harness is provided at the lower end; the material used for the electrode is a high-temperature resistant material such as stainless steel and titanium alloy.

[0023] As Figure 2 shown, in some embodiments, a first channel 3a and a third channel 3c that penetrate through are provided in the inner tube 3, and the first channel 3a and the third channel 3c are circumferentially evenly distributed with respect to each other; In some disclosures, the center of the separator 33 is cylindrical 32, and a semi-circular mounting groove 605 is provided inside the emitter electrode 61 and the return electrode 62 to cooperate with the cylindrical 32. In this way, the four channels are distinguished, and at the same time, the stability of the electrode after installation is ensured.

[0024] It can be understood that in some cases, the first channel 3a and the third channel 3c are suitable for being used as the liquid injection channel and the liquid discharge channel. In some cases, no other settings need to be made at the distal end of the inner tube 3, and the liquid can be directly injected and discharged from the end face of the inner tube 3. In some cases, interfaces can also be provided at the distal ends of the first channel 3a and the third channel 3c. The design of the liquid inlet and outlet improves the uniformity and coverage of the liquid distribution, enhances the intraoperative flushing and cooling effects, and improves the visibility and safety of the operation area.

[0025] As Figure 3 shown, in some embodiments, a liquid channel 603 is provided on the electrode block. The proximal end of the liquid channel 603 communicates with the first channel 3a or the third channel 3c. By setting it like this, the liquid outlet and inlet can be arranged 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 regions and operating angles.

[0026] Preferably, in some cases, the liquid channel 603 can be set as a through hole, and the liquid inlet and outlet are arranged on the distal end face of the electrode block. At the same time, side through holes 604 communicating with the liquid channel 603 can be provided on the side of the electrode block as needed. Through the multi-through hole outlet setting at the distal end + side of the electrode block, the liquid is more evenly distributed in the surgical area, effectively improving the cleaning and cooling efficiency, and is particularly suitable for large-scale tissue operations or ablation.

[0027] As Figure 3 shown, in some embodiments, a plurality of insertion bosses 601 are provided at the distal end of the electrode block. 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. When installed, 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 structure of the insertion bosses 601 provides a reliable mechanical connection method, ensuring the stability and positioning accuracy of the electrode block at the end of the inner tube, avoiding the loosening or offset of the electrode during use, improving the overall system safety and service life, and at the same time, sealing can be completed through the cooperation of the insertion bosses 601 and the channels.

[0028] In some disclosures, in order to determine the region / position where the electrode is located, the system collects the impedance change signal between the emitter electrode 61 and the return electrode 62. By analyzing the impedance characteristics between the two poles of the working end, the tissue recognition function can be realized, that is, the tissue type of the current electrode region can be judged according to the impedance difference. For example, the conductivity of cortical bone is low, cancellous bone has medium conductivity, and periosteum and blood have high conductivity, so as to judge physiological saline, general soft tissue, annulus fibrosus, nucleus pulposus or ligament, etc. This function can provide tissue recognition assistance for intraoperative operations and improve the accuracy and safety of surgery.

[0029] In some embodiments, an installation groove for installing the horizontal sliding module 71 is provided inside the handle 1, as Figure 2 , Figure 5 , Figure 8 shown. An inner tube installation groove 711 for installing the inner tube 3 is provided inside the horizontal sliding module 71; Preferably, as Figure 2 shown, in some disclosures, an opening groove 34 is provided at the proximal positions of the first channel 3a and the third channel 3c of the inner tube 3. The cross-section of the inner tube installation groove 711 matches the proximal end face of the inner tube 3. A baffle for sealing the opening groove 34 is provided at the proximal end of the inner tube installation groove 711. Two pipeline interfaces 714 respectively communicating with the sealed opening groove 34 are provided on the horizontal sliding module 71; Through such a design, when installing, the proximal end of the inner tube 3 is directly inserted into the inner tube installation groove 711. At this time, the second channel 3b and the fourth channel 3d are exposed at the proximal end of the inner tube installation groove 711, and the opening groove 34 abuts against the baffle at the proximal end of the inner tube installation groove 711 to complete the sealing; It can be understood that during use, the liquid inlet pipeline and the liquid discharge pipeline are respectively connected to the pipeline interfaces 714. After passing through the pipeline interfaces 714, the liquid communicates with the sealed cavity formed by the opening groove 34 and the inner tube installation groove 711, and then communicates with the second channel 3b or the fourth channel 3d through the cavity. Through such a design, directly using the cavity for installing the inner tube 3 as the liquid channel can ensure a compact structure, and at the same time using the horizontal sliding module 71 to complete the connection between the second channel 3b or the fourth channel 3d and the external pipeline can ensure the stability of the connection when the horizontal sliding module 71 moves.

[0030] In some disclosures, a fifth channel 3e is provided at the central position of the inner tube 3, and a detection circuit 301 is provided inside the fifth channel 3e. The front end position of the detection circuit 301 is the detection point, and the detection point can be used to detect one or more of resistance, temperature, and pressure; In some embodiments, as Figure 1 , Figure 2 shown, a fifth channel 3e is provided at the central position of the inner tube 3. The fifth channel 3e is a through structure for accommodating the detection circuit 301. A detection point is provided at the front end of the detection circuit 301, and this detection point can be used to collect key parameter information of the surgical area in real time, including but not limited to one or more physical quantities such as resistance, temperature, and pressure. The signal is transmitted through the 5-cavity tube, and the host temperature control function is used to automatically adjust the electrode energy output and avoid heat loss.

[0031] Furthermore, in some disclosures, a temperature sensor is integrated in the detection circuit 301. The temperature sensor is disposed in the area near the plasma electrode and is used to monitor the temperature change of the working end of the electrode in real time. The temperature signal is transmitted to the host control system through the fifth channel 3e. In cooperation with the temperature control management function of the host, the output energy of the electrode can be automatically adjusted according to the actual temperature change, realizing closed-loop control, preventing tissue carbonization or thermal damage to adjacent structures caused by overheating during the operation, and enhancing the intelligence of the system operation and the tissue protection ability.

[0032] In some embodiments, such as Figure 1 , Figure 2 , Figure 5 and Figure 8 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 realizing precise control of the insertion part and integrated control of the system functions.

[0033] Wherein, a traction mechanism for adjusting the bending states of the outer tube 2 and the inner tube 3 is provided inside the handle 1. The traction mechanism includes a plurality of rotary knobs or sliding adjustment devices, which are respectively connected to the traction ropes of the outer bendable section and the wire harnesses of the inner bendable section. The operator can drive the traction ropes or wire harnesses to tighten or loosen by adjusting the knobs or sliders, so that the outer bendable section or the inner bendable section is bent to the desired angle, realizing multi-directional precise positioning of the electrode end in the surgical field of view.

[0034] A channel structure for accommodating and fixing the wire harness is provided inside the handle 1. The emitter wire harness 302 and the return electrode wire harness 303 are respectively led out through the handle and connected to an external high-frequency electrosurgical host to realize energy output control.

[0035] Meanwhile, a signal lead interface for the detection circuit 301 is also provided inside the handle. This interface is connected to the data port of the host to transmit the detection signals such as temperature and resistance from the fifth channel 3e to the main control system in real time for use in conjunction with the system's automatic identification or temperature control feedback function.

[0036] A horizontal sliding module 71 for supporting and guiding the axial movement of the inner tube 3 is also provided inside the handle 1. The operator can move the inner tube 3 back and forth inside the outer tube 2 by sliding the button or rotating the control structure to adjust the extension length of the plasma electrode 6 to meet the operation requirements at different depths or angles. The sliding module 71 is designed with a rail limit structure to prevent the inner tube from being over-pushed or over-retracted.

[0037] In a further preferred embodiment, a safety lock button or an adjustment section structure can also be integrated on the handle 1 for quickly locking after adjusting the electrode position to prevent misoperation during the operation. In addition, an LED status light, an electrode excitation status indicator light or a temperature overheat alarm light can be set to provide real-time feedback on the system status and enhance the intraoperative safety guarantee.

[0038] Through the above structural settings, the handle 1 realizes the combination of structural integration, operation modularization and user-friendliness. It not only facilitates the operator to complete the comprehensive control of the position, angle, liquid, energy output, etc. of the insertion part, but also improves the overall response speed and clinical adaptability of the system, and significantly enhances the practicability and safety of the ablation system.

[0039] As Figure 1 、 Figure 4 shown, an installation chute 101 is provided inside the handle 1. A friction ring 102 is provided on one side of the proximal end of the installation chute 101. The friction ring 102 is waist-shaped and is provided with a waist-shaped through hole 103 inside; on one side of the proximal end of the waist-shaped through hole 103, there is a first mounting shaft 104; The horizontal sliding module 71 is movably installed in the installation chute 101. A first roller 73 is movably installed on the first mounting shaft 104, and an adjustment slider 72 is movably installed in the waist-shaped through hole 103; The outer bendable section at the distal end of the outer tube 2 is provided as a bending snake bone 21. The bending snake bone 21 is controlled by a traction rope 14. Both ends of the traction rope 14 are fixed at the front end position of the snake bone and then respectively pass through the snake bone and are tensioned after passing through the first roller 73. The specific setting of the snake bone can refer to the existing snake bone technology. The present disclosure preferably uses an integrally cut snake bone, which is convenient for processing.

[0040] As Figure 7 shown, the adjustment slider 72 is fixedly connected to a point on the traction rope 14 between the first roller 73 and the horizontal sliding module 71. Specifically, a fixed pressing block 721 is provided on the adjustment slider 72. The traction rope 14 on one side of the first roller 73 is arranged between the adjustment slider 72 and the fixed pressing block 721 and is fixed by the pressure between the adjustment slider 72 and the fixed pressing block 721. A friction surface 722 that cooperates with the friction ring 102 is provided on the outside of the adjustment slider 72; a push block 4 is connected and installed on the outside of the adjustment slider 72, and the push block 4 is arranged on the side surface of the handle 1. With such a design, the traction rope 14 is first tensioned by the first roller 73. Then, the position of the adjustment slider 72 is adjusted through the push block 4. The movement of the adjustment slider 72 drives the movement of the traction rope 14. At this time, the traction rope 14 moves along the first roller 73, respectively completing the tightening and loosening of the traction ropes 14 on both sides of the first roller 73; It can be understood that when the traction rope 14 above the first roller 73 is fixedly connected to the adjustment slider 72, when the adjustment slider 72 moves backward, the traction rope 14 above the first roller 73 is tightened, and the traction rope 14 below the first roller 73 is loosened. At this time, the bending snake bone 21 bends toward the side where the traction rope is tightened.

[0041] As Figure 8As shown, the horizontal sliding module 71 is provided with traction rope guide grooves 712 on its upper and lower end faces. The traction rope 14 between the curved snake bone 21 and the first roller 73 is arranged in the traction rope guide grooves 712, so as to avoid the dislocation and abnormal friction of the traction rope 14 when the horizontal sliding module 71 moves.

[0042] The horizontal sliding module 71 mentioned in the present disclosure can be driven by manual sliding, motor and other means to achieve reciprocating motion.

[0043] As Figure 4 、 Figure 5 、 Figure 6 As shown, the driving mode of the horizontal sliding module 71 is as follows; a second mounting shaft 107 is arranged in the handle 1, a rotating rod 74 is mounted on the second mounting shaft 107, and a connecting rod 78 is arranged between the rotating rod 74 and the horizontal sliding module 71. The two ends of the connecting rod 78 are respectively movably hinged on the rotating rod 74 and the horizontal sliding module 71; thus, 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.

[0044] As Figure 6 As shown, in some disclosures, a first gear 741 is arranged on the rotating rod 74, a third mounting shaft 109 is arranged in the handle 1, a sector gear 77 is mounted on the third mounting shaft 109, the sector gear 77 meshes with the first gear 741, and an adjusting trigger 5 is arranged on the sector gear 77; As Figure 1 、 Figure 6 As shown, the handle 1 is integrally in the shape of a pistol, including a holding part 11 and a connecting part 12; a trigger mounting groove 108 for mounting the adjusting trigger 5 is arranged on the side of the holding part 11 where the fingers hold, and the adjusting trigger 5 is located in the trigger mounting groove 108 and protrudes.

[0045] Furthermore, in some disclosures, a torsion spring is arranged between the third mounting shaft 109 and the sector gear 77, and a moment is applied to the sector gear 77 by the torsion spring to ensure that the initial position of the horizontal sliding module 71 is at the farthest end without applying external force.

[0046] It can be understood that, in order to ensure that the initial position of the horizontal sliding module 71 is fixed and has a tendency to move towards the fixed initial position without applying external force, a continuous driving force can be applied to the adjusting trigger 5, the sector gear 77, the first gear 741, and the horizontal sliding module 71, and the driving force can be applied through the elastic force of springs, torsion springs, and the material itself.

[0047] As Figure 1 、 Figure 4 、 Figure 6As shown, in some disclosures, a fourth mounting shaft 106 is provided inside the handle 1. A roller opening groove 105 is formed on the side surface of the fourth mounting shaft 106. The tail roller 76 is movably mounted on the fourth mounting shaft 106. The tail roller 76 includes an adjusting roller disc 761 and a fixing disc 762 for the inner bending traction rope. The adjusting roller disc 761 is located inside the roller opening groove 105 and protrudes from the handle 1. During use, the inner bending traction rope is driven by pushing the adjusting roller disc 761 to complete the control of the attitude angle of the inner bendable section at the distal end of the inner tube 3.

[0048] It can be understood that in the above solution, the inner bending traction rope can be the emitter wire harness 302 and the return wire harness 303, or it can be a separately provided inner bending traction rope.

[0049] 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 bending traction rope 15 and a second inner bending traction rope 16. In order to ensure the tension state of the inner bending traction rope 15 when the horizontal sliding module 71 moves, a cam is provided for compensating the length of the inner bending traction rope when the horizontal sliding module 71 moves.

[0050] As Figure 5 、 Figure 6 As shown, a compensation cam 75 is provided on the first gear 741. Two inner bending traction rope guide grooves 751 are provided on the outer side of the compensation cam 75. A tail roller 76 is provided inside the handle 1. The distal end of the inner bending traction rope is fixed at the distal end position of the inner bendable section. After passing through the inner tube mounting groove 711, it passes through the inner bending traction rope guide groove 751 and then is connected to the tail roller 76. With such a design, when adjusting the position of the inner tube 3, the compensation cam 75 rotates, and the compensation is completed by changing the contact position between the compensation cam 75 and the inner bending traction rope.

[0051] In some embodiments, an integrated connection outlet is provided at the bottom of the holding portion 1. The liquid pipeline and the control wire harness adopt a low-position centralized layout: wherein the first channel 3a and the third channel 3c are respectively connected to an external perfusion / aspiration device through a liquid pipeline, and the emitter wire harness 302, the return wire harness 303, and the signal lines of the detection circuit 301 are led out through a shielded cable group with color-coded identification.

[0052] A bendable electrode system is composed of a bendable electrode, a liquid management unit, and a host, and realizes energy transmission and data interaction through a cable. The host integrates a high-frequency energy output module and an intelligent analysis system, and is connected to the handle through a multi-core cable. The cable is provided with a plasma excitation circuit, an impedance detection circuit, a temperature signal line, and a liquid pipeline.

[0053] The host has a built-in impedance analysis module, which collects impedance spectrum data between the emitter electrode and the loop electrode in real time, and combines it with the pre-stored tissue conductivity database to identify tissue types through dynamic impedance. During surgery, when the electrode contacts bone tissue, the host automatically triggers an audible and visual alarm and limits the output power to avoid thermal damage to the bone structure. The liquid management unit adopts a dual-pump linkage design, which realizes pulsed flushing and negative pressure drainage of the solution through the first and third channels of the inner tube, respectively, to maintain a clear surgical field.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A bendable controllable electrode, characterized in that: The electrode comprises: 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, movably arranged in the outer tube, the inner tube can move along the axis of the outer tube, and the distal end of the inner tube is provided with an inner bendable section; The plasma electrode is arranged on the distal end surface of the inner tube.

2. A 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 snake tube, a multi-section segmented structure, a bellows, a multi-section 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 sheet is arranged 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. An emitter wiring harness and a loop wiring harness are arranged in the second channel and the fourth channel respectively. 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 which penetrate through the inner tube. The first channel and the third channel are used as a liquid injection channel and a liquid discharge channel.

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 circumference.

7. The bendable controllable electrode according to claim 1, 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: The plasma electrode side is provided with a side through hole which is interconnected with the liquid channel.

9. The bendable controllable electrode according to claim 1, characterized in that: A horizontal sliding module is provided in the handle, and an inner tube installation groove for installing the inner tube is provided in the horizontal sliding module; Open grooves are provided at the proximal ends 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 installed in the installation slide groove, the first installation shaft is movably installed with a first roller, and the waist-shaped through hole is movably installed with an adjusting slider; 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, and the two ends of the traction rope are fixed to the front end of the snake bone and 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 between the first roller and the horizontal sliding module.

12. The bendable controllable electrode according to claim 9, characterized in that: A rotating rod is installed in the handle, a connecting rod is provided between the rotating rod and the horizontal sliding module, and two ends of the connecting rod are respectively movably hinged on the rotating rod and the horizontal sliding module; The rotating rod is provided with a first gear, the handle is provided with a sector gear, the sector gear and the first gear are meshed with each other, the sector gear is provided with an adjustment trigger, and the adjustment trigger protrudes from the housing.

13. The bendable controllable electrode according to claim 12, characterized in that: 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 to pass through the inner tube mounting groove and then pass through the inward-bending traction rope guide grooves and connect with the driving device.

14. The bendable controllable electrode according to claim 1, characterized in that: A tail roller is provided in the handle, and the tail roller includes an adjusting roller and a fixing plate for fixing the inner-bending traction rope. The adjusting roller part protrudes from the handle, and the inner-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.

15. A bending controllable electrode system, characterized in that: Comprising a bendable controllable electrode and a host as described in any one of claims 1 to 14; The host is connected to the handle via a cable, and the cable is provided with circuits for power transmission and signal transmission.

16. A bending controllable electrode system according to claim 15, characterized in that: The curved controllable electrode system collects impedance change signals between the emitter electrode and the loop electrode and realizes the tissue identification function by monitoring the impedance between the two electrodes at the working end.

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