Flexible electrode with liquid channel and system thereof

Abstract

The application relates to a bendable electrode with a liquid channel and a system thereof, and belongs to the technical field of orthopedic surgical instruments. The bendable electrode comprises a handle, a plasma electrode and an insertion part. The insertion part is connected to the handle at one end, and comprises an outer tube and an inner tube. The outer tube is movably arranged in the handle at a proximal end and can move along the axis direction of the outer tube, and the distal end of the outer tube is provided with an outer bendable section. The inner tube is arranged in the outer tube, and the proximal end of the inner tube is fixedly connected to the handle, and the distal end of the inner tube is provided with an inner bendable section. The plasma electrode is arranged at the distal end of the inner bendable section, and is provided with a liquid injection port. The inner and outer tubes with multi-dimensional adjustment capacity are arranged in the insertion part, the snake bone structure is matched with the telescopic outer tube, and the electrode system can realize flexible guidance and multi-angle accurate positioning in a complex surgical path.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of orthopedic surgical instruments, in particular to a bendable electrode with a liquid channel and a system thereof. BACKGROUND

[0002] At present, in the pain department, orthopedic department and other minimally invasive interventional surgeries, ablation instruments such as plasma electrodes and radiofrequency electrodes are widely used to treat target tissues. Since the treatment site is usually located in a narrow, curved or deep tissue area, the operating instrument needs to have good flexibility and controllability to smoothly enter the surgical channel and accurately locate the target area.

[0003] Traditional ablation electrodes are mostly rigid structures or single-direction bendable structures, which are difficult to adapt to complex anatomical paths, especially when operating in the surrounding tissue of the nerve or the small gap beside the spine and involving multi-dimensional path navigation. Their flexible adjustment capability cannot meet the operation requirements of complex clinical paths, and there are problems such as difficulty in entering, inaccurate positioning, and inflexible control. In addition, the existing curved electrodes do not have an effective liquid injection and discharge structure, and the heat is difficult to be taken away in time when using a single instrument for surgery, which may cause non-target area damage caused by tissue carbonization, adhesion and even high temperature.

[0004] Based on this, a bendable electrode with a liquid channel and a system thereof are proposed. SUMMARY

[0005] The purpose of the present application is to provide a bendable electrode with a liquid channel and a system thereof to improve the accuracy of minimally invasive ablation surgery.

[0006] To solve the above technical problems, the present application is realized by the following technical scheme:

[0007] A bendable electrode with a liquid channel, comprising

[0008] a handle;

[0009] an insertion part connected to one end of the handle, the insertion part comprising an outer tube and an inner tube, wherein:

[0010] the outer tube is movably arranged in the handle along the axis direction of the outer tube, and the distal end of the outer tube is provided with an outer bendable section;

[0011] the inner tube is arranged in the outer tube, the proximal end of the inner tube is fixedly connected to the handle, and the distal end of the inner tube is provided with an inner bendable section;

[0012] a plasma electrode is arranged at the distal end of the inner bendable section, and a liquid injection port is arranged on the plasma electrode.

[0013] On the one hand, a bendable electrode system with a liquid channel is provided, comprising a bendable electrode with a liquid channel, a host computer and a liquid management unit.

[0014] A bendable electrode with a liquid channel, comprising a handle; an insertion part connected to the handle at one end, the insertion part comprising an outer tube and an inner tube, wherein: the outer tube is movably arranged in the handle at the proximal end and can move along the axis of the outer tube, and the distal end of the outer tube is provided with an outer bendable section; the inner tube is arranged in the outer tube, and the proximal end is fixedly connected to the handle, and the distal end is provided with an inner bendable section; a plasma electrode is arranged at the distal end of the inner bendable section, and a liquid inlet is arranged on the plasma electrode.

[0015] The host is connected to the handle by a cable, and the cable is provided with a line for power transmission and signal transmission;

[0016] A liquid management unit is in communication with the liquid outlet or the liquid inlet, and is used to deliver liquid to the liquid inlet of the bendable electrode at a controllable flow rate and pressure, and receive backflow liquid from the liquid outlet. Advantages

[0017] 1. Some embodiments of the present disclosure provide an inner tube and an outer tube with multi-dimensional adjustment capability in the insertion part, and a snake bone structure cooperates with the telescopic outer tube, so that the electrode system can realize flexible guidance and multi-angle accurate positioning in a complex surgical path.

[0018] 2. Some embodiments of the present disclosure provide a bending structure with independent adjustment of the inner tube and the outer tube, which can effectively overcome the problem that the traditional instrument is difficult to accurately adjust the posture in a multi-bending path, thereby improving the reach efficiency and positioning accuracy of the target area in the operation.

[0019] 3. Some embodiments of the present disclosure integrate a liquid inlet and a liquid outlet arranged in the insertion part in the electrode system, and form a liquid channel structure with the electrode area. By using the structure configuration of the liquid channel, directional cooling, cleaning or flow guiding can be performed in the tissue contact area, thereby improving the tissue reaction conditions in the operation, reducing the risk of thermal damage, and improving the stability and safety of the electrode treatment.

[0020] 4. Some embodiments of the present disclosure provide a bipolar structure in the electrode part, and combine with the auxiliary positioning mode of the nerve probe path, so as to realize the identification of the target nerve tissue in the operation process, thereby improving the specificity of the treatment and the individualized precise operation ability.

[0021] 5. Some embodiments of the present disclosure adjust the posture of the bending section by adjusting the roller, and the side of the adjusting roller is provided with a gear structure and a mounting shaft sleeve, a locking spring, a resisting block and other components to form a self-locking structure. After the adjusting wrench is loosened, the roller can automatically return and lock, without the need for the operator to continuously exert force to maintain the adjustment state, thereby improving the operation convenience and avoiding misadjustment in the operation.

[0022] 6、The outer tube of some embodiments of the present disclosure is fixed on the sliding block and the position of the outer traction line is controlled through the outer tube adjusting block and the movable block. The movable block is connected through the connecting shaft and is provided with a rope passing hole. The traction line and the adjusting structure can be linked, so that the traction line can move with the adjusting outer tube without additional tension compensation device, improving the compactness and adjusting efficiency of the device.

[0023] Of course, implementing any product of the present application does not necessarily require achieving all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present disclosure;

[0026] Figure 2 is a schematic diagram of the snake bone assembly of the embodiment of the present disclosure;

[0027] Figure 3 is a schematic diagram of the plasma electrode structure of the embodiment of the present disclosure;

[0028] Figure 4 is a schematic diagram of the inner bendable segment structure of the embodiment of the present disclosure;

[0029] Figure 5 is a schematic diagram of the inner bendable segment of the embodiment of the present disclosure;

[0030] Figure 6 is a schematic diagram of the isolation mounting seat structure of the embodiment of the present disclosure;

[0031] Figure 7 is a schematic diagram of the handle structure of the embodiment of the present disclosure;

[0032] Figure 8 is a schematic diagram of the inner tube installation of the embodiment of the present disclosure;

[0033] Figure 9 is a schematic diagram of the traction line installation of the embodiment of the present disclosure;

[0034] Figure 10 is a schematic diagram of the auxiliary traction line installation of the embodiment of the present disclosure;

[0035] Figure 11 is a schematic diagram of the adjusting gear installation of the embodiment of the present disclosure;

[0036] Figure 12is a schematic diagram of a gear adjustment relationship according to an embodiment of the present disclosure;

[0037] Figure 13 is a schematic diagram of a gear adjustment structure according to an embodiment of the present disclosure;

[0038] Figure 14 is a schematic diagram of a slider installation according to an embodiment of the present disclosure;

[0039] Figure 15 is a schematic diagram of an adjustment roller installation according to an embodiment of the present disclosure;

[0040] Figure 16 is a schematic diagram of an adjustment roller structure according to an embodiment of the present disclosure;

[0041] Figure 17 is a schematic diagram of an installation shaft sleeve structure according to an embodiment of the present disclosure;

[0042] Figure 18 is a schematic diagram of a hollow hose structure according to an embodiment of the present disclosure;

[0043] Figure 19 is a schematic diagram of a lumbar pain working state according to an embodiment of the present disclosure;

[0044] Figure 20 is a schematic diagram of a spinal cord nucleus pulposus compression nerve pain ablation according to an embodiment of the present disclosure.

[0045] Handle-100, installation cavity-1001, open installation slot-1002, outer tube support slot 1003, adjustment roller installation shaft-1004, wrench open slot-1005, inner tube installation seat-1006, upper pressing block-1007, rubber block 1008, locking abutting block-1009, outer gear abutting point-1010, plasma electrode-1, traction connection point-101, liquid through hole-102, side through hole-103, probe installation through hole-104, emitter electrode-1a, return electrode 1b, isolation installation seat-2, installation seat installation slot 21, insulating isolation sheet-22, wire passing through hole-23, probe connection hole-24, metal snake bone assembly-3, snake bone assembly-4, traction through hole-41, connection boss-42, auxiliary through hole-43, arc-shaped groove-44, probe through hole-45; inner tube-5, inner tube open slot-501, outer tube-6, outer bendable segment-61, accommodation slot-611, sliding block-7, connection shaft-701, adjustment wrench-8, adjustment boss-801, adjustment roller-9, first traction fixing slot-901, second traction fixing slot-902, countersunk waist hole-903, first waist hole-904, outer gear-905, spring installation slot-906, hollow hose-10, traction outer tube-1102, conductive wire harness-1103, wire harness inner tube-1104, first hollow hose 10a and second hollow hose 10b, adjustment gear-12, forward gear-12a, reverse gear-12b, arc-shaped ring groove-121, traction wire installation hole-122, nerve probe-13, auxiliary traction wire-14, connection point-141, first auxiliary traction wire-14a and second auxiliary traction wire-14b, gear installation shaft-15, shaft fixing block-151, positioning clamping block 152, side adjustment sliding block-16, rack-1601, outer tube adjustment block-17, connection shaft installation slot-171, movable block-170, outer traction wire-18, locking spring-19, installation shaft sleeve-20, spring installation column-2001, intravertebral nerve root-9001, spinal nucleus lesion area-9002, intravertebral bone passage-9003. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0047] It should be explained that, for the convenience of description, the terms such as “front end” and “distal end” are used in the description of the disclosed scheme to describe the end far from the operator, and the terms such as “proximal end” and “rear end” are used to describe the end close to the operator.

[0048] The application discloses a bendable electrode with a liquid channel and a system thereof, and aims at the problems of insufficient operation flexibility of a traditional bipolar electrode and unstable plasma excitation when a single instrument works, and mainly comprises a handle, an axially movable outer tube and an inner tube. A snake bone assembly series structure is adopted at the distal end of the inner tube, and multi-directional bending is realized through the cooperation of the arc-shaped grooves of the connecting bosses. A bipolar structure is arranged at the electrode head, and a liquid injection / exit port and a nerve probe are integrated, so that temperature control and tissue identification are realized in cooperation with a physiological saline circulating system, and the handle is integrated with a self-locking adjusting mechanism. The device is suitable for minimally invasive surgeries in orthopedics, pain departments and the like, can adapt to complex anatomical structures, improves ablation accuracy and reduces tissue damage.

[0049] As shown in Figure 1 , the bendable electrode with a liquid channel comprises a handle 100;

[0050] An insertion part is arranged on the handle 100 in an extending manner, and the insertion part comprises an outer tube 6 and an inner tube 5;

[0051] The proximal end of the outer tube 6 is movably arranged in the handle 100, and the outer tube 6 can move along the axis thereof;

[0052] The inner tube 5 is arranged in the outer tube 6, and the proximal end thereof is fixedly arranged on the handle 100; the distal end of the inner tube 5 is provided with an inner bendable section; and the distal end of the inner bendable section is provided with a plasma electrode 1;

[0053] As shown in Figure 1 , Figure 2 , the inner bendable section is composed of a plurality of snake bone assemblies 4 connected in a head-to-tail manner, the snake bone assemblies 4 are in a cylindrical shape as a whole, the distal end of the snake bone assembly 4 is provided with a connecting boss 42, the proximal end of the snake bone assembly 4 is provided with an arc-shaped groove 44 matched with the connecting boss 42, and the connecting boss 42 is arranged in the arc-shaped groove 44 during installation;

[0054] A liquid injection port is formed in the plasma electrode 1, and the liquid injection port is communicated with a liquid injection pump or a liquid hanging bag through a pipeline; and the liquid is mainly physiological saline.

[0055] Through the above design, the plasma electrode 1 is delivered to the area requiring operation through the insertion part during the surgery, the relative positions of the outer tube 6 and the inner tube 5 are adjusted as required, and then the posture of the inner bendable section at the distal end of the inner tube 5 is adjusted to adjust the position of the plasma electrode 1 so that the plasma electrode 1 is located in the optimal operation area.

[0056] The insertion part structure comprises the adjustable outer tube 6 and the inner bendable section with flexible adjustment capability, the fine adjustment of the plasma electrode tail end in multiple angles and multiple directions can be realized in the limited cavity space, so that the electrode adaptability and operation flexibility are improved.

[0057] The plasma electrode 1 of the present disclosure can excite plasma by high-frequency electric energy in use, realize precise treatment of target tissue, and complete multiple functional operations such as tissue ablation, hemostasis and coagulation, tissue cutting, tissue stripping, wound disinfection, necrotic tissue removal, intraoperative debridement and diapex, and local heat conduction. Through the cooperation of the built-in liquid channel and the liquid injection port, the temperature control and irrigation of the working area of the electrode can also be realized, and a good plasma excitation environment is created, further enhancing the safety and treatment quality of the surgical process.

[0058] As shown in Figure 19 , Figure 20 In some pain department intervention surgeries, the plasma electrode 1 often works alone, and the excitation of plasma state needs a medium. The ideal medium in the working environment of surgical instruments is physiological saline. Common orthopedic pain surgeries include: ablation of spinal nucleus lesion area 9002 to relieve pressure on the nerve, ablation of intrapineal nerve root to eliminate bone pain, and ablation of painful nerve of knee joint to eliminate joint pain. In these surgeries, it is necessary to set a liquid injection port for the plasma electrode 1 to inject physiological saline into the working area. At the same time, a good physiological saline environment can avoid other damage caused by high temperature in the working area, especially damage to blood vessels in joint pain surgery.

[0059] In some disclosures, the plasma electrode 1 is provided with a liquid injection port and a liquid discharge port at the same time, so that excessive physiological saline can be avoided from causing hydrops in the tissue, especially when the intrapineal nerve root 9001 is ablated. The working environment of the intravertebral bone channel 9003 is a closed environment in the bone, so it is necessary to set a liquid discharge port. The specific setting mode can be as shown in Figure 3 Two liquid through holes 102 are provided on the plasma electrode 1, and the two liquid through holes 102 are respectively a liquid injection port and a liquid discharge port. The liquid discharge port is connected with a suction pump or a negative pressure suction tube.

[0060] Further, a side through hole 103 in communication with the liquid through hole 102 is provided on the side surface of the plasma electrode 1. Through the multi-through hole setting of the distal end and the side surface of the plasma electrode 1, the distribution of the liquid in the surgical area is more uniform, and the cleaning and surgical efficiency are effectively improved.

[0061] It can be understood that the plasma electrode 1 can be a monopolar electrode or a bipolar electrode.

[0062] As shown in Figure 1 , Figure 2 , Figure 4As shown, in some embodiments of the present disclosure, the inner tube 5 is a stainless steel tube as a whole, and the serpentine component 4 of the bendable section at the distal end of the inner tube 5 is provided with two symmetrically arranged traction through holes 41. The center points of the two traction through holes 41 are perpendicular to the center points of the two connecting bosses 42 on the projection plane. A main control traction line is arranged in the traction through hole 41, and the distal end of the main control traction line is fixedly connected with the plasma electrode 1. By applying traction force to one side of the main control traction line, the serpentine component 4 is rotated around the connecting boss 42, and the bending of the serpentine end to one side of the traction through hole 41 is completed. It can be understood that the traction line on the other side can be loosened synchronously to reduce resistance if necessary.

[0063] As shown in the drawings, Figure 2 , Figure 4 As shown in some embodiments of the present disclosure, an auxiliary through hole 43 is arranged on the connecting boss 42, the end face of the connecting boss 42 is designed as an arc-shaped spherical surface, an auxiliary traction line 14 is arranged in the auxiliary through hole 43, and the distal end of the auxiliary traction line 14 is fixedly arranged on the plasma electrode 1. The bending of the inner bendable section to the auxiliary through hole 43 is completed by the arc-shaped end face of the connecting boss 42 cooperating with the traction of the auxiliary traction line 14. It can be understood that the design of the arc-shaped spherical surface can obtain more degrees of freedom.

[0064] In this way, the maximum bending angle of the inner bendable section to one side of the traction through hole 41 can be ensured, and the auxiliary through hole 43 side can also be assisted to adjust.

[0065] It should be understood that, in order to enable the inner bendable section to be adjusted in four directions, the inner bendable section can be bent to one side of the auxiliary through hole 43 by arranging the end face of the connecting boss 42 as an arc-shaped spherical surface and arranging a gap between two adjacent serpentine components 4. The serpentine components 4 can also be realized by being staggered with each other. Specifically, the axis lines of the arc-shaped grooves 44 arranged on the two adjacent serpentine components 4 are perpendicular to each other. In this way, the inner bendable section is divided into group a and group b, and the group a and the group b are bent in two directions respectively. In this way, a larger bending angle to one side of the auxiliary through hole 43 can be obtained.

[0066] As shown in the drawings, Figure 6 In some embodiments, the plasma electrode 1 is a bipolar electrode, including an emitter electrode 1a and a return electrode 1b. An isolation mounting seat 2 is arranged between the inner bendable section and the plasma electrode 1. An insulating isolation sheet 22 is arranged on the isolation mounting seat 2, and the emitter electrode 1a and the return electrode 1b are arranged on the two sides of the insulating isolation sheet 22 respectively. Two wire passing through holes 23 are arranged on the isolation mounting seat 2 for the traction line to pass through. The emitter electrode 1a and the return electrode 1b can be fixed on the isolation mounting seat 2 by means of adhesive bonding.

[0067] The front end of the plasma electrode 1 is provided with a nerve probe 13, and the nerve probe 13 is used to identify nerve tissue by being in contact with the nerve. The plasma electrode 1 is provided with a probe mounting through hole 104, the center of the insulating isolation sheet 22 is provided with a probe connecting hole 24, the probe connecting hole 24 is arranged in the probe mounting through hole 104, and the center of the snake bone assembly 4 is provided with a probe through hole 45.

[0068] In this way, when the nerve probe 13 is installed, the nerve probe 13 sequentially passes through the probe connecting hole 24, the probe through hole 45, the inner tube 5, and the handle and the main machine. In this way, the nerve probe 13 can be used as an auxiliary positioning method when performing nerve ablation treatment of pain, especially for some ultrasound-guided operations.

[0069] Further, as shown in Figure 1 , in order to facilitate installation, the auxiliary traction line 14 is made of a metal soft wire, the inner bendable section of the snake bone assembly 4 is made of ceramic or medical plastic material, the inner bendable section is provided with a metal snake bone assembly 3 at the farthest end, and the auxiliary traction line 14 can be directly fixed by welding.

[0070] In some embodiments, the distal end of the outer tube 6 is provided with an outer bendable section 61, and the outer tube 6 is made of stainless steel; the outer bendable section 61 is integrally provided with a plurality of accommodation grooves 611 by cutting, and is driven by a traction line. It should be understood that the outer bendable section 61 can also be separately provided and fixedly connected to the outer tube 6 by means of glue or welding.

[0071] In this way, by matching the outer bendable section 61 and the inner bendable section, the insertion part can be bent and adjusted in multiple dimensions in space, breaking through the limitation of the traditional single-direction adjustable design. The outer bendable section 61 is used for large-amplitude adjustment of the overall direction, and is suitable for path navigation and rough positioning in the early stage of the operation; the inner bendable section is used for end position and angle adjustment in the fine operation stage, so that the plasma electrode 1 can accurately contact the target tissue and complete a series of operations such as positioning, contacting, and processing.

[0072] Further, in some disclosures, the outer bendable section 61 has a return elasticity, so that the posture adjustment of the outer bendable section 61 can be completed by arranging only a single-direction traction line, and a spring snake bone can be used.

[0073] In order to facilitate the understanding of those skilled in the art, the present disclosure will now be described in detail with reference to Figures 1-6 ; The inner tube 5 is a stainless steel tube, and the inner tube 5 is provided with an inner bendable section at the distal end.

[0074] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 , the inner tube 5 is a stainless steel tube, and the inner tube 5 is provided with an inner bendable section at the distal end.

[0075] As shown in Figure 3, the plasma electrode 1 is a bipolar electrode, which is composed of two electrode blocks, namely the emitter electrode 1a and the return electrode 1b, and the emitter electrode 1a and the return electrode 1b are symmetrically arranged, and the electrode blocks are provided with liquid through holes 102, and the liquid through holes 102 on the emitter electrode 1a and the return electrode 1b are respectively liquid injection ports and liquid discharge ports;

[0076] As shown in Figure 3, the plasma electrode 1 is a bipolar electrode, which is composed of two electrode blocks, namely the emitter electrode 1a and the return electrode 1b, and the emitter electrode 1a and the return electrode 1b are symmetrically arranged, and the electrode blocks are provided with liquid through holes 102, and the liquid through holes 102 on the emitter electrode 1a and the return electrode 1b are respectively liquid injection ports and liquid discharge ports; Figure 6 As shown in Figure 3, the plasma electrode 1 is a bipolar electrode, which is composed of two electrode blocks, namely the emitter electrode 1a and the return electrode 1b, and the emitter electrode 1a and the return electrode 1b are symmetrically arranged, and the electrode blocks are provided with liquid through holes 102, and the liquid through holes 102 on the emitter electrode 1a and the return electrode 1b are respectively liquid injection ports and liquid discharge ports;

[0077] As shown in Figure 3, the plasma electrode 1 is a bipolar electrode, which is composed of two electrode blocks, namely the emitter electrode 1a and the return electrode 1b, and the emitter electrode 1a and the return electrode 1b are symmetrically arranged, and the electrode blocks are provided with liquid through holes 102, and the liquid through holes 102 on the emitter electrode 1a and the return electrode 1b are respectively liquid injection ports and liquid discharge ports; Figure 1 , Figure 2 As shown in Figure 3, the plasma electrode 1 is a bipolar electrode, which is composed of two electrode blocks, namely the emitter electrode 1a and the return electrode 1b, and the emitter electrode 1a and the return electrode 1b are symmetrically arranged, and the electrode blocks are provided with liquid through holes 102, and the liquid through holes 102 on the emitter electrode 1a and the return electrode 1b are respectively liquid injection ports and liquid discharge ports;

[0078] As shown in Figure 3, the plasma electrode 1 is a bipolar electrode, which is composed of two electrode blocks, namely the emitter electrode 1a and the return electrode 1b, and the emitter electrode 1a and the return electrode 1b are symmetrically arranged, and the electrode blocks are provided with liquid through holes 102, and the liquid through holes 102 on the emitter electrode 1a and the return electrode 1b are respectively liquid injection ports and liquid discharge ports;

[0079] As shown in Figure 3, the plasma electrode 1 is a bipolar electrode, which is composed of two electrode blocks, namely the emitter electrode 1a and the return electrode 1b, and the emitter electrode 1a and the return electrode 1b are symmetrically arranged, and the electrode blocks are provided with liquid through holes 102, and the liquid through holes 102 on the emitter electrode 1a and the return electrode 1b are respectively liquid injection ports and liquid discharge ports; Figure 18 As shown in Figure 3, the plasma electrode 1 is a bipolar electrode, which is composed of two electrode blocks, namely the emitter electrode 1a and the return electrode 1b, and the emitter electrode 1a and the return electrode 1b are symmetrically arranged, and the electrode blocks are provided with liquid through holes 102, and the liquid through holes 102 on the emitter electrode 1a and the return electrode 1b are respectively liquid injection ports and liquid discharge ports;

[0080] As shown in Figure 3, the plasma electrode 1 is a bipolar electrode, which is composed of two electrode blocks, namely the emitter electrode 1a and the return electrode 1b, and the emitter electrode 1a and the return electrode 1b are symmetrically arranged, and the electrode blocks are provided with liquid through holes 102, and the liquid through holes 102 on the emitter electrode 1a and the return electrode 1b are respectively liquid injection ports and liquid discharge ports;

[0081] ​An auxiliary through hole 43 is formed on the connecting boss 42, the end face of the connecting boss 42 is provided as an arc-shaped spherical surface, an auxiliary traction line 14 is arranged in the auxiliary through hole 43, the distal end of the auxiliary traction line 14 is fixedly arranged on the isolation mounting seat 2, the distal end of the auxiliary traction line 14 and the isolation mounting seat 2, and the connecting point 141 of the auxiliary traction line 14 and the isolation mounting seat 2 is fixed by point gluing.

[0082] The specific operation steps of the above embodiment are as follows:

[0083] Before the operation, the operator connects the plasma electrode 1 in the embodiment to the radio frequency host computer, and connects the connecting pipeline of the liquid injection port to the liquid infusion pump or the physiological saline hanging bag, and connects the connecting pipeline of the liquid discharge port to the suction pump or the negative pressure suction tube;

[0084] The insertion part is sent into the operation channel or the target area. The outer tube 6 can slide along the axial front end, and the inner tube 5 is completely located in the outer tube 6 to facilitate passing through the channel;

[0085] When the insertion part approaches the target area, the position of the outer tube 6 is adjusted according to the requirement, the operator adjusts the main control traction line and the auxiliary traction line through the control system to adjust the posture of the inner bendable section, so that it reaches the best position;

[0086] After adjustment, the control system starts the liquid injection port, so that the physiological saline is transported to the front end of the plasma electrode 1 and the side hole 103 thereof through the hollow hose 10, and a liquid environment required for plasma excitation is formed;

[0087] The radio frequency host computer is started, high-frequency electric energy is transmitted to the emitter electrode 1a and the loop electrode 1b of the plasma electrode 1 through the lead-through wire harness 1103, and stable plasma is formed in the saline medium.

[0088] The liquid circulates between the liquid injection port and the liquid discharge port, the temperature of the working area is controlled, heat damage is avoided, tissue debris or excess liquid can be discharged in time, and the clear operation area is maintained.

[0089] After the operation is completed, the operator relaxes the traction line and the auxiliary traction line, the inner bendable section is reset, the outer tube 6 can slide along the axial front end, the inner tube 5 is completely located in the outer tube 6, and then the insertion part is slowly withdrawn, and the whole operation process is completed.

[0090] In some disclosures, the hollow hose 10 includes a traction outer tube 1102 and a wire harness inner tube 1104, the wire harness inner tube 1104 is arranged in the traction outer tube 1102, and the lead-through wire harness 1103 is arranged in the wire harness inner tube 1104.

[0091] Further, the wire harness inner tube 1104 can be arranged on the inner wall of the traction outer tube 1102 or in any position within the wire harness inner tube 1104, and is connected with the inner wall of the traction outer tube 1102 through the supporting part; the wire harness inner tube 1104 is processed in an integrated injection molding manner, and the material can be medical pvc or other medical plastics.

[0092] In some embodiments, the isolation mounting seat 2 is provided with a mounting groove 21 at the proximal end, and the mounting groove 21 is matched with the connecting boss 42 of the distal-most snake bone assembly 4 of the inner bendable section, so that the isolation function of the isolation mounting seat 2 is achieved and the bending angle of the electrode at the distal end is increased.

[0093] It should be understood that the inner tube 5 and the proximal-most snake bone assembly 4 of the inner bendable section are also connected through the connecting boss 42.

[0094] It can be understood that, in some embodiments, according to actual needs and processing difficulties, the main control traction wire can be simply provided as a wire with an insulating layer, the front end is connected with the electrode for transmitting the energy excited by the radio frequency, and the electrode is used for applying a traction force to control the posture of the inner bendable section; the end surface of the connecting boss 42 is provided as an arc surface matched with the arc-shaped groove 44 to ensure the connection stability. The auxiliary through hole 43 is provided with a connecting channel of a liquid injection port and a liquid discharge port on the electrode 1. Such a design can simplify the structure, reduce the processing difficulty and the diameter of the electrode, and has certain advantages for ablation of small joint pain nerves and can reduce trauma.

[0095] It should be understood that the adjustment of the inner bendable section and the outer bendable section 61 is achieved by applying a traction force to the bendable section through the traction wire, and the driving mode of the traction wire can be selected from a roller, a sliding block, an electrode drive and the like.

[0096] As shown in Figure 7 , Figure 8 , Figure 15 The handle 100 is provided with a mounting cavity 1001, the mounting cavity 1001 is provided with an open mounting groove 1002 on both sides, the open mounting groove 1002 is provided with an inner tube mounting seat 1006 and an adjusting roller mounting shaft 1004 in sequence on the proximal side, the side surface of the adjusting roller mounting shaft 1004 is provided with a wrench opening groove 1005, the adjusting roller mounting shaft 1004 and the wrench opening groove 1005 are provided with a locking abutting block 1009, and the side of the locking abutting block 1009 close to the adjusting roller mounting shaft 1004 is provided with an external gear abutting point 1010.

[0097] As shown in Figure 7As shown, in some embodiments, the outer tube 6 is fixedly arranged on the slider 7, the inner tube 5 is fixedly installed on the inner tube mounting seat 1006 after passing through the end face of the proximal segment of the outer tube, and is fixedly locked by the upper pressing block 1007. The adjusting module is movably installed on the adjusting roller mounting shaft 1004;

[0098] As shown in Figure 15 、 Figure 16 、 Figure 7 The adjusting module includes an adjusting roller 9.

[0099] The outer side of the adjusting roller 9 is provided with a first traction fixing groove 901 and a second traction fixing groove 902. Two traction lines in one bending direction are arranged in the two traction fixing grooves, respectively. It is understood that the two traction lines are distributed at 180°. Thus, by rotating the adjusting roller 9, the tightening and loosening of the two traction lines are simultaneously completed to achieve the purpose of adjusting the posture of the inner bending segment. The fixing of the traction fixing groove and the traction line is completed by glue dispensing or welding.

[0100] In some disclosures, the fixing points of the two traction lines and the traction fixing groove are uniformly distributed in a circle.

[0101] The adjusting roller 9 is provided with an adjusting wrench 8. The adjusting wrench 8 is provided with an adjusting boss 801. The adjusting wrench 8 exposes the adjusting boss 801 by passing through the wrench opening groove 1005. The driving of the adjusting roller 9 is completed by pushing the adjusting boss 801.

[0102] In order to avoid the need to continuously apply a pushing force to maintain the state after adjusting the adjusting roller 9, in some embodiments, the adjusting module is provided with a self-locking structure. The self-locking structure can be in the form of a ratchet, spring friction, bolt extrusion, etc. The self-locking structure proposed in the present disclosure is as shown in Figure 15 、 Figure 16 、 Figure 7 The side surface of the adjusting roller 9 is provided with an external gear 905. The adjusting roller 9 is used in conjunction with the through hole of the adjusting roller mounting shaft 1004, which is a first waist hole 904. The end of the first waist hole 904 close to the outer side of the handle is provided with a countersunk waist hole 903. The side surface of the countersunk waist hole 903 is provided with a spring mounting groove 906. The axis of the spring mounting groove 906 is directed towards the direction of pushing the adjusting boss 801.

[0103] The countersunk waist hole 903 is provided with a mounting shaft sleeve 20. The mounting shaft sleeve 20 is in the form of a whole ring. One side is provided with a spring mounting column 2001. The spring mounting column 2001 is provided with a locking spring 19.

[0104] During installation, the locking spring 19 is first installed on the spring mounting column 2001, then the mounting shaft sleeve 20 is installed in the countersunk waist hole 903, and finally the adjusting roller 9 is installed on the adjusting roller mounting shaft 1004.

[0105] After installation, under the action of the locking spring 19, the adjusting roller 9 moves closer to the locking contact block 1009. At this time, the external gear contact point 1010 is engaged in the external gear 905, and the external gear contact point 1010 and the external gear 905 cooperate to complete the locking. When adjustment is needed, pressure is applied to the pushing adjusting boss 801 to make the adjusting roller 9 overcome the elastic force and move away from the locking contact block 1009, thus releasing the lock. After the adjustment is completed, the pressure is stopped and the adjusting roller 9 returns to its original position under the action of the locking spring 19.

[0106] Furthermore, multiple adjusting roller mounting shafts 1004 can be set to complete the attitude adjustment of the inner bending section and the outer bending section 61.

[0107] like Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 12 , Figure 13 As shown, in some embodiments, a side adjustment slider 16 is movably installed in the open mounting groove 1002 on one side of the mounting cavity 1001, and a rack 1601 is provided on the inner side of the side adjustment slider 16.

[0108] The inner tube 5 has an inner tube opening slot 501 located between the slider 7 and the inner tube mounting base 1006. Two adjusting gears 12 are positioned above the inner tube opening slot 501, and these adjusting gears 12 mesh with the rack 1601. Figure 13 As shown, the outer side of the adjusting gear 12 is provided with an arc-shaped annular groove 121, and a traction line mounting hole 122 is opened on the arc-shaped annular groove 121;

[0109] like Figure 8 , Figure 10 As shown, the two adjusting gears 12 are a forward gear 12a and a reverse gear 12b, respectively, which are used to control the two traction lines in one direction of the inner flexible section to be wound in the arc-shaped grooves 121 of the forward gear 12a and the reverse gear 12b in the forward and reverse directions, respectively, and then fixed in the traction line mounting hole 122. The fixing method is glue fixing.

[0110] With this configuration, when the side adjustment slider 16 moves to rotate the forward gear 12a and the reverse gear 12b, one of them tightens the traction line and the other loosens the traction line, thus completing the posture adjustment of the inner bendable section.

[0111] In some embodiments, the adjusting gear 12 is mounted on a gear mounting shaft 15, which is arranged on the inner wall of the mounting cavity 1001 through a shaft fixing block 151, and the end face of the gear mounting shaft 15 is provided with a positioning clamping block 152 for positioning the adjusting gear 12. In some embodiments, the shaft fixing block 151 and the gear mounting shaft 15 can be fixed by glue, or can be integrally injection molded with the handle 100, and then the gear mounting shaft 15 is mounted.

[0112] As shown in Figure 7 , Figure 14 In some embodiments, the outer tube 6 is fixedly arranged on the sliding block 7, and an outer tube adjusting block 17 is arranged in the opening mounting groove 1002.

[0113] The side of the sliding block 7 close to the outer tube adjusting block 17 is provided with a connecting shaft 701.

[0114] The inner side of the outer tube adjusting block 17 is provided with a connecting shaft mounting groove 171, and the connecting shaft 701 is mounted in the connecting shaft mounting groove 171, so that the movement of the sliding block 7 is driven by the sliding of the outer tube adjusting block 17.

[0115] In some embodiments, the device for driving the outer bendable section 61 is arranged on the outer tube adjusting block 17, so that the traction line can move synchronously when the position of the outer tube 6 is adjusted, and thus a tensioning device is not needed to compensate.

[0116] As shown in Figure 14 In some embodiments, the end face of the outer tube adjusting block 17 is provided with a movable block 170 for controlling the outer traction line 18 of the outer bendable section 61 to be connected with the movable block 170 after being pulled out of the outer tube 6, and the movable block 170 can be arranged on the outer tube adjusting block 17 through a sliding groove. In this way, the posture of the outer bendable section 61 can be controlled by the movement of the movable block 170.

[0117] Further, the connecting shaft 701 is provided with a through hole connected with the outer tube 6, and the connecting shaft mounting groove 171 is provided with a through hole connected with the movable block 170, so that the outer traction line 18 is connected with the movable block 170 in sequence after being pulled out of the end face or side face of the outer tube 6, passing through the through holes on the connecting shaft 701 and the connecting shaft mounting groove 171.

[0118] Further, when the outer bendable section 61 is a flexible snake bone, the side of the outer tube adjusting block 17 is provided with a movable block 170, which can meet the demand; or the movable blocks 170 can be arranged on both sides of the outer tube adjusting block 17 according to the demand.

[0119] For the control of the inner bendable section and the outer bendable section 61, those skilled in the art can combine according to actual needs and handle layout, the method can be mentioned in the embodiment of the present disclosure or the method disclosed in the prior document; meanwhile, for the name of some components, the embodiment of the present disclosure is for the convenience of understanding of those skilled in the art, and the limited range of components should be comprehensively judged according to the context and the drawings.

[0120] In some embodiments, the front end of the handle 100 is provided with an outer tube support groove 1003 to improve the stability of the outer tube 6, and the lower part of the handle 100 is provided with a rubber block 1008 for protecting the wire harness pipeline.

[0121] As shown in Figures 1-18 some embodiments, the handle 100 is pistol-shaped as a whole, and the control mode of the handle 100 on the inner bendable section and the outer bendable section 61 is selected as follows:

[0122] The hollow soft tube 10 for controlling the inner bendable section to bend to one side of the traction through hole 41 includes a first hollow soft tube 10a and a second hollow soft tube 10b, which are fixed on the first traction fixed groove 901 and the second traction fixed groove 902 after being drawn out from the end face of the inner tube 5.

[0123] The auxiliary traction line 14 for controlling the inner bendable section to bend to one side of the auxiliary through hole 43 includes a first auxiliary traction line 14a and a second auxiliary traction line 14b, the first auxiliary traction line 14a is fixed in the traction line mounting hole 122 after being wound in the forward direction on the forward gear 12a, and the second auxiliary traction line 14b is fixed in the traction line mounting hole 122 after being wound in the reverse direction on the reverse gear 12b.

[0124] The outer traction line 18 for controlling the outer bendable section 61 is movably connected to the movable block 170. The outer bendable section 61 is an elastic snake bone, which is in a vertical state under no external force, and is made of spring steel material.

[0125] A bendable electrode system with a liquid channel, comprising a bendable electrode, a liquid management unit and a host computer, energy transmission and data interaction are realized through a cable. The host computer integrates a high-frequency energy output module and an intelligent analysis system, and is connected with the handle through a multi-core cable. The cable is provided with a plasma excitation circuit, an impedance detection loop and a liquid pipeline.

[0126] The liquid management unit is in communication with the liquid discharge outlet or the liquid injection inlet, and is used for delivering liquid to the liquid injection inlet of the bendable electrode at a controllable flow rate and pressure, and receiving backflow liquid from the liquid discharge outlet.

[0127] The host built-in impedance analysis module collects the impedance spectrum data between the emitter electrode 1a and the return electrode 1b in real time, combines the pre-stored tissue conductivity database, and realizes tissue type recognition through dynamic impedance. During the operation, when the electrode contacts the bony tissue, the host automatically triggers the acousto-optic warning and limits the output power to avoid thermal damage to the bony structure. The liquid management unit adopts a double-pump linkage design, and through the liquid injection port and the liquid discharge port at the front end of the electrode, it realizes flushing and negative pressure drainage, and maintains the working medium and the clear surgical field.

[0128] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0129] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.

Claims

1. A flexible electrode with a liquid channel, characterized in that, include handle; The insertion part, one end of which is connected to the handle, includes an outer tube and an inner tube, wherein: The outer tube is movably located in the handle at its proximal end, allowing it to move along its own axis. The distal end of the outer tube is provided with an externally bendable section. A side adjustment slider is movably mounted on one side of the handle, and a rack is provided on the inner side of the side adjustment slider; An inner tube opening groove is provided near the end of the inner tube, and two adjusting gears are provided above the inner tube opening groove. The adjusting gears mesh with the rack. The two adjusting gears are a forward gear and a reverse gear, respectively. The two auxiliary traction lines are fixed after being wound in the forward and reverse directions on the forward and reverse gears, respectively. The inner tube is set inside the outer tube, with its proximal end fixedly connected to the handle and its distal end having an inner bendable section; the inner bendable section is formed by connecting the two ends of a snake bone assembly. The far end of the snake bone assembly is provided with a connecting boss, and the near end of the snake bone assembly is provided with an arc-shaped groove. During installation, the connecting boss is placed in the arc-shaped groove. The snake bone assembly has two symmetrically arranged traction through holes. The line connecting the center points of the two traction through holes is perpendicular to the line connecting the center points of the two connecting bosses. A main control traction line is provided in the traction through holes, and the far end of the main control traction line is fixedly connected to the plasma electrode. An auxiliary through hole is provided on the connecting boss. The end face of the connecting boss is an arc-shaped spherical surface. An auxiliary traction line is provided in the auxiliary through hole. The far end of the auxiliary traction line is fixedly connected to the front end of the inner bending section. The main control traction line is controlled by an adjustment module, which includes an adjustment roller. The handle has an adjustment roller mounting shaft, and the two main control traction lines are respectively set on the adjustment roller. The adjusting roller is equipped with an adjusting lever, and the adjusting lever is equipped with an adjusting boss. The side of the adjusting roller is provided with an external gear. The adjusting roller has a first waist hole. One end of the first waist hole has a countersunk waist hole. The side of the countersunk waist hole is provided with a spring mounting groove. The axis of the spring mounting groove faces the direction of pushing the adjusting boss. A mounting bushing is provided inside the countersunk waist hole; the mounting bushing is an overall ring shape, with a spring mounting post on one side, and a locking spring on the spring mounting post. The mounting bushing is installed on the adjusting roller mounting shaft. The side of the external gear is provided with a locking contact block, and the side of the locking contact block near the external gear is provided with an external gear contact point. When there is no external force, the adjusting roller moves closer to the locking contact block under the action of the locking spring, and the external gear contact point is locked into the external gear. The plasma electrode is located at the distal end of the inner flexible section and has a liquid injection port.

2. The flexible electrode with a liquid channel according to claim 1, characterized in that, The plasma electrode is equipped with a liquid outlet.

3. The flexible electrode with a liquid channel according to claim 1, characterized in that, The plasma electrode is provided with two liquid through holes, which serve as a liquid injection port and a liquid discharge port, respectively, and side through holes are provided on the side of the liquid through holes.

4. The flexible electrode with a liquid channel according to claim 1, characterized in that, A slider is movably installed inside the handle, and an inner tube mounting seat is provided on one side of the slider near its end. The outer tube is fixedly mounted on the slider, and the inner tube passes through the outer tube and is fixedly mounted on the inner tube mounting base.

5. A flexible electrode with a liquid channel according to claim 4, characterized in that, An outer tube adjustment block is installed on the side of the handle; A connecting shaft is provided on the side of the slider near the outer tube adjusting block; The inner side of the outer tube adjusting block is provided with a connecting shaft mounting groove, and the connecting shaft is installed in the connecting shaft mounting groove; The outer flexible section is driven by an external traction line, and the device for driving the outer flexible section is mounted on the outer tube adjustment block.

6. The flexible electrode with a liquid channel according to claim 5, characterized in that, The end face of the outer tube adjusting block is provided with a movable block; The connecting shaft is provided with a through hole for connecting to the outer tube, and the connecting shaft mounting groove is provided with a through hole for connecting to the movable block; After the external traction line emerges from the end face or side of the outer tube, it passes through the connecting shaft and the through hole on the connecting shaft mounting groove in sequence and connects to the movable block.

7. The flexible electrode with a liquid channel according to claim 1, characterized in that, The main control traction line is a hollow flexible tube, and the distal end of the hollow flexible tube is connected to a liquid outlet or a liquid inlet.

8. A flexible electrode with a liquid channel according to claim 7, characterized in that, The hollow flexible tube contains a conductive wire harness.

9. A flexible electrode with a liquid channel according to claim 1, characterized in that, A neural probe is provided at the front end of the plasma electrode.

10. A flexible electrode with a liquid channel according to claim 9, characterized in that, The plasma electrode includes an emitter electrode and a return electrode; an isolation mounting base is provided between the inner flexible section and the plasma electrode; An insulating isolating plate is provided on the isolation mounting base. The emitter electrode and the return electrode are respectively located on both sides of the insulating isolating plate. A probe connection hole is provided in the center of the insulating isolating plate, and a nerve probe is provided in the probe connection hole.

11. A flexible electrode with a liquid channel according to claim 10, characterized in that, The isolation mounting base has a mounting slot at its near end, and the mounting slot is connected to the connecting boss of the snake bone component at the farthest end of the inner flexible section. The inner tube and the nearest end of the snake bone assembly of the inner flexible section are connected by a connecting boss. The auxiliary traction line is made of soft metal wire, and the farthest end of the inner flexible section is equipped with a metal snake bone assembly.

12. A flexible electrode system with a liquid channel, characterized in that, Includes a flexible electrode with a liquid channel, a main unit, and a liquid management unit as described in any one of claims 2-11; The main unit is connected to the handle via a cable, and the cable contains lines for power transmission and signal transmission. The liquid management unit, connected to a liquid outlet or liquid inlet, is used to deliver liquid at a controllable flow rate and pressure to the liquid inlet of the flexible electrode and to receive return liquid from the liquid outlet.

13. A flexible electrode system with a liquid channel according to claim 12, characterized in that, The flexible electrode system with a liquid channel acquires impedance change signals between the emitter electrode and the return electrode, and monitors the impedance between the two electrodes at the working end to achieve tissue identification.

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