Plasma surgical electrode

Abstract

The application relates to the technical field of medical devices, and discloses a plasma operation electrode which comprises an operation handle, an electrode main body, a drip assembly and a suction assembly, the inside of the operation handle is provided with a containing cavity; the electrode main body comprises an electrode tube and an electrode cutter head, the electrode tube comprises an inner sleeve and an outer sleeve sleeved with the inner sleeve, a drip channel is formed between the outer sleeve and the inner sleeve, at least two liquid injection ports which are in communication with the drip channel are arranged on the periphery of one end of the outer sleeve close to the electrode cutter head, the sum of the flow rates of the liquid flowing out of the liquid injection ports increases along the periphery of the outer sleeve from the bottom of the outer sleeve to the top of the outer sleeve; the drip assembly passes through the containing cavity and is in communication with the drip channel so as to inject liquid into the liquid injection ports; the suction assembly passes through the containing cavity and the inner sleeve and is in communication with the electrode cutter head, a vent is arranged on the operation handle and is in communication with the suction assembly, the flow rate in the suction assembly is adjusted in real time by blocking and pressing the vent, and the ablation stability is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a plasma surgical electrode. Background Technology

[0002] Low-temperature plasma radiofrequency ablation utilizes the energy generated by radiofrequency at a frequency of 100 kHz to convert the electrolyte between the electrode and the tissue into plasma. Driven by the voltage difference, the high-energy charged particles in the electrolyte cause the cells in the target tissue to gradually disintegrate at the molecular level, resulting in tissue coagulation and necrosis. This molecular dissociation causes tissue disintegration, thereby achieving the purpose of ablation and cutting. This effect is limited to the surface of the target tissue, achieved at temperatures between 40-70 degrees Celsius, thus causing minimal thermal damage to surrounding tissues. It is currently widely used in various surgical procedures. Low-temperature plasma radiofrequency ablation equipment consists of a high-frequency generator, surgical electrodes, connecting cables, and a foot pedal. The surgical electrodes and cables are typically connected via an operating handle, which is used to perform the procedure.

[0003] CN106580467B discloses a low-temperature plasma scalpel with an integrated three-dimensional electrode, comprising a blade handle with a built-in through hole, a steel tube connected to the front end of the through hole of the blade handle, and a ceramic head connected to the steel tube. At least one perforation is provided on the side of the ceramic head, and an integrated three-dimensional electrode for cutting, ablating, and coagulating tissue is inserted into the perforation. An absorption cavity for absorbing the cut tissue is provided in the middle of the ceramic head. The integrated three-dimensional electrode, through the streamlined design of the ceramic head on its side surface, allows saline solution from the outlet hole to wet the electrode of the ceramic head. However, due to the "viscosity" of the saline solution surface, the flow direction of the saline solution cannot be controlled, and it cannot uniformly cover the electrode blade head well.

[0004] CN103536351B discloses a low-temperature plasma electrode device for otolaryngology, comprising a trapezoidal arch-shaped sub-needle, one end of which is closed, and the other end embedded in a sub-needle holder. The sub-needle holder is connected to one end of a loop electrode sleeve, forming a loop electrode. The loop electrode sleeve is covered with an inner hexagonal insulating tube, and the other ends of the loop electrode sleeve and the insulating tube are fixedly connected to one end of a handle. The other end of the handle is connected to a connector via a wire. The sub-needle and the loop electrode sleeve are respectively connected to the connector via wires, forming a bipolar loop electrode. The electrode device has a flow control valve on its suction line, but this valve cannot be adjusted during operation according to the intraoperative situation, affecting the stability of the ablation.

[0005] In summary, the saline solution flowing from the injection port of commonly used surgical electrodes does not cover the electrode tip evenly, leading to unstable ablation. In addition, unstable flow rate within the aspiration tubing also affects the stability of ablation. Therefore, there is an urgent need to design a plasma surgical electrode to solve the problem of unstable ablation. Summary of the Invention

[0006] The purpose of this invention is to propose a plasma surgical electrode that solves the problem of unstable ablation in existing surgical electrodes.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] This invention provides a plasma surgical electrode, comprising:

[0009] The operating handle has an internal receiving cavity;

[0010] The electrode body includes an electrode tube and an electrode tip for cutting tissue. One end of the electrode tube extends into the accommodating cavity. The electrode tube includes an inner sleeve and an outer sleeve fitted over the inner sleeve. The electrode tip is located at the end of the inner sleeve away from the operating handle. A drip channel is formed between the outer sleeve and the inner sleeve. At least two injection ports connected to the drip channel are arranged circumferentially at the end of the outer sleeve near the electrode tip. The sum of the flow rates of the liquid flowing out from each injection port increases circumferentially from the bottom to the top of the outer sleeve.

[0011] A drip assembly that passes through the receiving cavity and is connected to the drip channel to inject liquid into each of the injection ports;

[0012] The suction component passes through the accommodating cavity and the inner sleeve and is connected to the electrode tip. The operating handle is provided with a vent that is connected to the suction component. The flow rate in the suction component is controlled by blocking or pressing the vent.

[0013] This plasma surgical electrode has at least two injection ports circumferentially arranged near the electrode tip on the outer tube, which are connected to the drip channel. The sum of the flow rates of the liquid flowing out from each injection port increases circumferentially from the bottom to the top of the outer tube, making the solution flow coverage more uniform and improving the discharge uniformity of the electrode tip, thereby improving the ablation stability. In addition, the operating handle is provided with a vent connected to the suction component. By blocking or pressing the vent, the flow rate in the suction component can be adjusted in real time, avoiding ablation instability caused by unstable pressure in the suction component.

[0014] As a preferred embodiment of the aforementioned plasma surgical electrode, the size of each injection port increases from the bottom to the top of the outer sheath along its circumference; or

[0015] The number of injection ports increases circumferentially from the bottom to the top of the outer tube.

[0016] By using the above two arrangement of injection ports, the sum of the flow rates of the liquid flowing out of each injection port increases along the circumference of the outer sleeve from the bottom to the top of the outer sleeve, making the design of the injection ports relatively simple.

[0017] As a preferred embodiment of the aforementioned plasma surgical electrode, the plasma surgical electrode further includes:

[0018] An input component is connected to the electrode tip through the accommodating cavity and the electrode tube.

[0019] The input component is connected to the electrode tip to supply power to the electrode tip, enabling the electrode tip to discharge.

[0020] As a preferred embodiment of the aforementioned plasma surgical electrode, the electrode tip includes:

[0021] A ceramic head, wherein an adsorption hole is provided on both ends of the ceramic head, one end of the ceramic head is connected to the electrode tube, and the adsorption hole is connected to the attraction component. A through hole is provided circumferentially through both ends of the ceramic head, and the through hole is connected to the electrode tube.

[0022] An electrode assembly is disposed at the end of the ceramic head that is not connected to the electrode tube, and the input component is connected to the electrode assembly through the through hole.

[0023] The ceramic head serves to insulate the electrode assembly. The electrode assembly is located at the end of the ceramic head that is not connected to the electrode tube. The input component passes through the through hole and connects to the electrode assembly, so that the electrode assembly generates an accelerating electric field to form plasma.

[0024] As a preferred embodiment of the aforementioned plasma surgical electrode, the electrode assembly has a ring structure; or

[0025] The electrode assembly includes at least two electrode plates, which are disposed circumferentially in the adsorption pore and configured as a ring structure.

[0026] The electrode assembly has a ring structure, or a ring structure is formed by at least two electrode sheets arranged around the adsorption pore, thereby maximizing the adsorption area of ​​the adsorption pore.

[0027] As a preferred embodiment of the aforementioned plasma surgical electrode, a biological monitoring device is provided between the ceramic head and the electrode assembly to monitor the differences in tissue proteins before and after biological tissue ablation.

[0028] The biomonitoring device can monitor the differences in tissue proteins before and after ablation of biological tissues, thereby avoiding damage to surrounding tissues and improving ablation accuracy.

[0029] As a preferred embodiment of the aforementioned plasma surgical electrode, the plasma surgical electrode further includes:

[0030] An angle adjuster is provided with multiple arc-shaped grooves, and the electrode body is inserted into the corresponding arc-shaped grooves to adjust the bending angle.

[0031] The arc-shaped groove on the angle adjuster allows for easy adjustment of the bending angle of the electrode body as needed, avoiding damage to the electrode body caused by manually bending it.

[0032] As a preferred embodiment of the aforementioned plasma surgical electrode, the arc-shaped groove includes a first groove segment and a second groove segment that are connected to each other. The first groove segment and the second groove segment are arranged at an angle, the angle being greater than 0° and less than 180°.

[0033] The aforementioned arc-shaped groove structure allows the electrode body to be bent at an angle greater than 0° and less than 180° to meet different application scenarios.

[0034] As a preferred embodiment of the aforementioned plasma surgical electrode, the width of the arc-shaped groove is 1 / 5 to 4 / 5 of the outer diameter of the electrode tube.

[0035] The above configuration facilitates the positioning of the electrode body within the arc-shaped groove.

[0036] As a preferred embodiment of the aforementioned plasma surgical electrode, the inner sheath includes:

[0037] A first inner tube and a second inner tube sleeved on the first inner tube. The end of the first inner tube near the electrode tip is provided with multiple sets of hollow grooves at intervals along the axial direction of the first inner tube. Each set of hollow grooves includes at least two cutting grooves arranged radially along the first inner tube. The multiple sets of hollow grooves are spirally arranged along the axial direction of the first inner tube.

[0038] The area between two adjacent cuts in each set of hollowed-out grooves is a connecting area, and the thickness of the connecting area gradually decreases from the end away from the electrode tip to the end closer to the electrode tip.

[0039] The aforementioned first inner tube structure can reduce the force required for bending the electrode tip, making it easier to bend the first inner tube.

[0040] The beneficial effects of this invention are:

[0041] The plasma surgical electrode proposed in this invention has at least two injection ports circumferentially arranged at one end of the outer sheath near the electrode tip, which are connected to the drip channel. The sum of the flow rates of the liquid flowing out from each injection port increases circumferentially from the bottom to the top of the outer sheath, resulting in a more uniform solution outflow coverage area, improving the discharge uniformity of the electrode tip, and thus improving ablation stability. In addition, the operating handle is provided with a vent connected to the suction component. By blocking and pressing the vent, the flow rate in the suction component can be adjusted in real time, avoiding ablation instability caused by unstable pressure in the suction component. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the plasma surgical electrode provided by the present invention. Figure 1 ;

[0043] Figure 2 This is a schematic diagram of the structure of the plasma surgical electrode provided by the present invention after removing the handle housing. Figure 1 ;

[0044] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0045] Figure 4 This is a schematic diagram of the structure of the plasma surgical electrode provided by the present invention after removing the handle housing. Figure 2 ;

[0046] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0047] Figure 6 This is a schematic diagram of the structure of the plasma surgical electrode provided by the present invention. Figure 2 ;

[0048] Figure 7 yes Figure 6 Sectional view of the middle FF line;

[0049] Figure 8 yes Figure 7 A magnified view of a section at point C;

[0050] Figure 9 yes Figure 7 A magnified view of a section at point D;

[0051] Figure 10 This is a partial structural schematic diagram of the first inner tube provided by the present invention;

[0052] Figure 11 yes Figure 10 A magnified view of a section at point H in the middle;

[0053] Figure 12 This is a partial structural schematic diagram of the inner sleeve provided by the present invention;

[0054] Figure 13 This is a schematic diagram of the structure of the plasma surgical electrode provided by the present invention. Figure 3 ;

[0055] Figure 14 yes Figure 13 A magnified view of a section at point E in the middle;

[0056] Figure 15 This is a partial structural schematic diagram of the electrode body provided by the present invention;

[0057] Figure 16 This is a schematic diagram of the angle adjuster provided by the present invention.

[0058] In the picture:

[0059] 1. Operating handle; 11. Handle housing; 110. Vent; 111. Anti-fooling protrusion; 113. Drip hole; 12. Insulating end; 121. Insulating protrusion; 122. Pressure ring; 13. Frame plate; 131. Limiting block; 132. Stopping protrusion; 133. Limiting half ring;

[0060] 2. Electrode body; 21. Electrode tip; 211. Ceramic head; 2111. Adsorption hole; 2112. Through hole; 212. Electrode assembly; 2121. Electrode sheet; 22. Electrode tube; 221. Outer tube; 2211. Liquid injection port; 222. Inner tube; 2221. First inner tube; 22211. Groove; 22210. Connection area; 22212. First groove; 22213. Second groove; 23. Electrode sheath;

[0061] 3. Suction component; 31. Suction unit; 32. Suction conduit;

[0062] 4. Drip assembly; 41. Drip unit; 42. Drip tubing;

[0063] 5. Input component; 51. Input connector; 52. Input cable;

[0064] 6. Angle adjuster; 61. Arc-shaped groove; 611. First groove section; 612. Second groove section. Detailed Implementation

[0065] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0066] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0067] like Figures 1-9 As shown, this embodiment provides a plasma surgical electrode, including an operating handle 1, an electrode body 2, an infusion assembly 4, and a suction assembly 3. The operating handle 1 has an internal receiving cavity. The electrode body 2 includes an electrode tip 21 and an electrode tube 22. The electrode tip 21 is used to cut tissue. One end of the electrode tube 22 extends into the receiving cavity. The electrode tube 22 includes an outer sleeve 221 and an inner sleeve 222. The outer sleeve 221 is fitted over the inner sleeve 222. The electrode tip 21 is located at the end of the inner sleeve 222 away from the operating handle 1. An infusion channel is formed between the outer sleeve 221 and the inner sleeve 222. At least two electrodes are circumferentially arranged on the end of the outer sleeve 221 near the electrode tip 21. The liquid injection port 2211, which is connected to the drip channel, increases the sum of the flow rates of the liquid flowing out of each injection port 2211 along the circumference of the outer sleeve 221 from the bottom to the top of the outer sleeve 221, making the solution flow coverage more uniform, improving the discharge uniformity of the electrode tip 21, and thus improving the ablation stability. The drip assembly 4 passes through the accommodating cavity and is connected to the drip channel to inject liquid into each injection port 2211. The suction assembly 3 passes through the accommodating cavity and the inner sleeve 222 and is connected to the electrode tip 21. The operating handle 1 is provided with a vent 110 connected to the suction assembly 3. The flow rate in the suction assembly 3 is controlled by blocking and pressing the vent 110. Pressing the vent 110 maintains pressure, while releasing the vent 110 releases pressure. During use, the flow rate can be adjusted and accurately controlled by pressing the vent 110. With the electrode body 2 fully immersed, plasma is generated, ensuring stable output of the electrode body 2 and avoiding unstable ablation caused by unstable pressure in the suction pipe 32.

[0068] Specifically, the drip assembly 4 includes a drip unit 41 and a drip line 42. The drip line 42 passes through the accommodating cavity and is connected to the drip channel. The drip unit 41 injects physiological saline into each injection port 2211 through the drip line 42. The suction assembly 3 includes a suction unit 31 and a suction line 32. One end of the suction line 32 is connected to the suction unit 31, and the other end of the suction line 32 passes through the accommodating cavity and the inner sleeve 222 and is connected to the electrode tip 21. The suction unit 31 is used to extract the liquid in the suction line 32. The vent 110 provided on the operating handle 1 is connected to the suction line 32. In this embodiment, the vent 110 is circular. In other embodiments, the vent 110 can also be elliptical or other shaped structures, which are not specifically limited here.

[0069] Furthermore, the plasma surgical electrode also includes an input component 5. The input component 5 passes through the accommodating cavity and the electrode tube 22 and is connected to the electrode tip 21. The connection between the input component 5 and the electrode tip 21 facilitates power supply to the electrode tip 21, enabling it to discharge. Specifically, the input component 5 includes an input connector 51 and an input cable 52. One end of the input cable 52 is connected to the input connector 51, and the other end passes through the accommodating cavity and the electrode tube 22, connecting to the electrode tip 21. The connection between the input connector 51 and the electrode tip 21 facilitates power supply to the electrode tip 21, enabling it to discharge. Specifically, the input cable 52 can be run through the inner sheath 222, the outer sheath 221, or between the inner sheath 222 and the outer sheath 221. In this embodiment, the input cable 52 is run through the inner sheath 222.

[0070] In this embodiment, the accommodating cavity is filled with a potting filler. The design of the potting filler filling the accommodating cavity improves the resistivity and dielectric breakdown strength at the operating handle 1, and also fills the gaps between the components inside the operating handle 1, greatly reducing the risk of positional displacement; the above design improves the electrical and mechanical performance of the plasma surgical operating end, and ensures the stability of the output of the electrode body 2.

[0071] In this embodiment, the filler material is epoxy resin or silicone. These limitations enhance the overall integrity of the plasma surgical operating end, improving its resistance to external impacts and vibrations; they also ensure that the circuits within the accommodating cavity are mutually insulated, preventing direct exposure of components or circuits, and improving the waterproof and moisture-proof performance of the plasma surgical operating end.

[0072] In one embodiment, the size of each injection port 2211 increases from the bottom to the top of the outer sleeve 221 along the circumference of the outer sleeve 221; in other embodiments, the number of injection ports 2211 increases from the bottom to the top of the outer sleeve 221 along the circumference of the outer sleeve 221. By employing the above methods, the sum of the flow rates of the liquid flowing from each injection port 2211 can increase from the bottom to the top of the outer sleeve 221 along the circumference of the outer sleeve 221, resulting in a more uniform solution outflow coverage area.

[0073] Optionally, the inner sleeve 222 includes a first inner sleeve 2221 (see...) Figures 10-12 The system includes a first inner tube 2221 and a second inner tube fitted over it. The second inner tube is a heat-shrinkable sleeve, which wraps around the outside of the first inner tube 2221, forming a drip channel between the heat-shrinkable sleeve and the outer tube 221. The heat-shrinkable sleeve can be made of PTFE fluorinated super-slippery heat-shrinkable tubing to facilitate brine flow. Additionally, a heat-shrinkable sleeve, made of insulating rubber, is also provided on the outside of the outer tube 221. The inner surface of the outer tube 221 can be coated with a hydrophobic coating to further facilitate brine flow.

[0074] like Figure 10 and Figure 11 As shown, the end of the first inner tube 2221 near the electrode tip 21 is provided with multiple sets of hollow grooves at intervals along the axial direction of the first inner tube 2221. Each set of hollow grooves includes at least two cutting grooves 22211 arranged radially along the first inner tube 2221. The multiple sets of hollow grooves are spirally arranged along the axial direction of the first inner tube 2221. The area between two adjacent cutting grooves 22211 in each set of hollow grooves is a connecting area 22210. The thickness of the connecting area 22210 gradually decreases from the end away from the electrode tip 21 to the end near the electrode tip 21. In this embodiment, the end of the first inner tube 2221 near the electrode tip 21 is provided with multiple sets of hollowed-out grooves at intervals along the axial direction of the first inner tube 2221. Each set of hollowed-out grooves includes two cuts 22211 symmetrically distributed radially along the first inner tube 2221. The symmetry lines of the two cuts 22211 of the multiple sets of hollowed-out grooves are spirally arranged along the axial direction of the first inner tube 2221, thereby improving the torsion control performance of the electrode body 2. The area between the two cuts 22211 of each set of hollowed-out grooves is the connecting area 22210. The thickness of the connecting area 22210 gradually decreases from the end away from the electrode tip 21 to the end near the electrode tip 21. The first inner tube 2221 with the above structure can reduce the force required for bending the electrode tip 21, making it easier to bend the first inner tube 2221.

[0075] In other embodiments, such as Figure 12As shown, another structure of the first inner tube 2221 is provided. The upper half of the first inner tube 2221 near the electrode tip 21 is provided with multiple first grooves 22212, and the lower half is provided with multiple second grooves 22213. The first grooves 22212 are all arranged along the axial direction of the first inner tube 2221, and the first grooves 22212 and second grooves 22213 are arranged opposite each other to reduce the force required to bend the electrode tip 21, thus facilitating the bending of the first inner tube 2221. In other embodiments, the first grooves 22212 and second grooves 22213 can also be staggered, which also reduces the force required to bend the electrode tip 21 and facilitates the bending of the first inner tube 2221.

[0076] For example, such as Figure 1 and Figure 8 As shown, one end of the drip line 42 is connected to the drip unit 41, and the other end extends into the receiving cavity. The receiving cavity is provided with a drip hole 113, which is connected to the drip channel between the inner sleeve 222 and the outer sleeve 221. The drip hole 113 is connected to the injection port 2211 through the drip channel. The drip line 42 is located at one end within the receiving cavity. The design of connecting the drip hole 113 to both the drip line 42 and the drip channel is simple and reliable. The layout of connecting the drip hole 113 and the drip line 42 within the receiving cavity reduces the difficulty of connecting the drip assembly 4 to the drip channel, ensuring the smooth operation of the drip line 42 and improving the assembly efficiency of the plasma surgical operating end.

[0077] In this embodiment, as Figure 3 and Figure 5 As shown, the operating handle 1 includes a handle housing 11, an insulating end 12, and a frame plate 13. The handle housing 11 and the insulating end 12 form a receiving cavity. The frame plate 13 is placed inside the receiving cavity and divides the receiving cavity into a first chamber and a second chamber. The input cable 52 and the suction tube 32 pass through the first chamber, and the drip tube 42 extends into the second chamber. Specifically, the drip hole 113 is located in the second chamber. In this embodiment, the insulating end 12 is made of soft TPE (Thermoplastic Elastomer). In other embodiments, the material of the insulating end 12 is not limited to the above-mentioned soft TPE; other soft rubber materials are also acceptable, as long as they can protect the cable. This invention does not limit the material. The above split design reduces the manufacturing difficulty of the operating handle 1, improves the processing efficiency of the operating handle 1, and reduces the production cost of the operating handle 1. Meanwhile, the design of the frame plate 13 to distinguish between the first chamber and the second chamber realizes the distinction of the connecting channels on the electrode tube 22, further reducing the possibility of contact between the suction tube 32 and the drip tube 42, and helping to further improve the ability to distinguish the flow trajectory of the inlet and outlet water.

[0078] Furthermore, the input cable 52, the suction tube 32, and the drip tube 42 are all connected to the insulating end 12, which is inserted into one end of the handle housing 11. Specifically, the outer surface of the insulating end 12 is provided with a pressure ring 122, which abuts against the inner wall of the handle housing 11. The setting of the pressure ring 122 improves the connection effect between the handle housing 11 and the insulating end 12, ensuring the stability of the connection.

[0079] Furthermore, an electrode sheath 23 is fitted onto the outer sleeve 221, and the electrode sheath 23 is inserted into the end of the handle housing 11 away from the insulating end 12. Specifically, in this embodiment, the outer layer of the electrode sheath 23 is made of PC (Polycarbonate) plastic. In other embodiments, the material of the outer layer of the electrode sheath 23 is not limited to the aforementioned PC plastic; any other material that meets the requirements for protection and connection strength is acceptable. This invention does not limit the material.

[0080] For example, the frame plate 13 is snapped onto the handle housing 11. The frame plate 13 has a limiting block 131 and a stop protrusion 132 protruding from it. An insulating protrusion 121 is fixedly connected to the insulating end 12, and the insulating protrusion 121 is sandwiched between the limiting block 131 and the stop protrusion 132. The design of limiting the insulating protrusion 121 by using the limiting block 131 and the stop protrusion 132 improves the positioning effect between the frame plate 13 and the insulating end 12, avoids the insulating end 12 from falling off due to accidents, ensures the working stability of the operating handle 1, and reduces the risk of damage to the operating handle 1.

[0081] Specifically, the end of the frame plate 13 away from the limiting block 131 and the stop protrusion 132 is also provided with a limiting semi-ring 133, which can be matched and snapped with the electrode sheath 23 and the handle housing 11 at the same time.

[0082] In this embodiment, the handle housing 11 is a cylindrical component, and the length direction of the handle housing 11 is the same as the length direction of the electrode tube 22. This design helps the operator to grip the handle housing 11, realizing a user-friendly improvement to the structure of the handle housing 11 and enhancing the user experience.

[0083] Preferably, the outer surface of the handle housing 11 is provided with an anti-slip layer (not shown in the figure) to prevent slipping, such as... Figure 13 As shown, the handle housing 11 is also provided with a foolproof protrusion 111. The foolproof protrusion 111 achieves the purpose of foolproofing, reduces the positional deviation of the handle housing 11 during the assembly process, and improves the assembly efficiency and assembly yield of the plasma surgical operating end.

[0084] like Figures 13-15As shown, the electrode tip 21 includes a ceramic head 211 and an electrode assembly 212. The ceramic head 211 is provided with an adsorption hole 2111 that extends through both ends of the ceramic head 211. One end of the ceramic head 211 is connected to the electrode tube 22, and the adsorption hole 2111 is connected to the attraction assembly 3. The adsorption hole 2111 is provided with a through hole 2112 that extends through both ends of the ceramic head 211 in the circumferential direction. The through hole 2112 is connected to the electrode tube 22. The electrode assembly 212 is provided at the end of the ceramic head 211 that is not connected to the electrode tube 22. The input assembly 5 passes through the through hole 2112 and is connected to the electrode assembly 212.

[0085] Specifically, one end of the ceramic head 211 is connected to the inner sleeve 222 of the electrode tube 22, and the adsorption hole 2111 is connected to the adsorption pipe 32 of the adsorption assembly 3, while the through hole 2112 is connected to the inner sleeve 222. The electrode assembly 212 is disposed on the end face of the ceramic head 211 that is not connected to the electrode tube 22, and the input cable 52 passes through the through hole 2112 and is connected to the electrode assembly 212. The electrode blade 21 is mounted on the inner sleeve 222 via the ceramic head 211, and the electrode assembly 212 is disposed on the end of the ceramic head 211 that is not connected to the electrode tube 22. The ceramic head 211 serves to insulate the electrode assembly 212. The electrode assembly 212 is connected to the input unit via the input cable 52 to discharge, thereby generating plasma.

[0086] Preferably, the electrode assembly 212 has a ring-shaped structure to avoid obstructing the adsorption pores 2111 and thus affecting the adsorption of the adsorption pores 2111. The electrode assembly 212 can be a ring-shaped electrode sheet structure; of course, as... Figure 12 As shown, the electrode assembly 212 may further include at least two electrode sheets 2121, which are arranged circumferentially around the adsorption hole 2111 in a ring structure. By forming a ring structure with at least two electrode sheets 2121 around the adsorption hole 2111, the inner diameter of the ring structure is no larger than the outer diameter of the adsorption hole 2111, maximizing the adsorption area of ​​the adsorption hole 2111, preventing clogging, and ensuring complete adsorption. Furthermore, the arrangement of at least two electrode sheets 2121 to form a ring structure reduces the fabrication requirements for individual electrode sheets 2121. In this embodiment, the thickness of the electrode sheets 2121 is between 0.1 mm and 1 mm, i.e., the thickness can be 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, 0.9 mm, 1 mm, etc. The material of the electrode sheets 2121 can be tungsten, molybdenum, chromium, or their alloys. There can be two, three, four, or more electrode sheets; the number is not limited. In other embodiments, the electrode sheet 2121 may also be petal-shaped.

[0087] Preferably, the adsorption hole 2111 can be configured as a trumpet shape, with the diameter of the adsorption hole 2111 gradually increasing along its axial direction toward the electrode plate 2121, thereby increasing the adsorption area of ​​the end of the adsorption hole 2111 near the electrode plate 2121. In this embodiment, the end face of the ceramic head 211 is flush with the end face of the electrode plate 2121 to prevent foreign matter residue and damage to tissues.

[0088] Furthermore, a biomonitoring device is provided between the ceramic head 211 and the electrode assembly 212. The biomonitoring device is used to monitor the differences in tissue proteins before and after ablation of biological tissue. Specifically, the biomonitoring device detects the differences between the polypeptide chains of tissue proteins before and after ablation and normal tissue, provides real-time feedback, and precisely adjusts the output energy to avoid damage to normal tissue.

[0089] In many plasma surgeries, doctors need to adjust the angle of the surgical electrodes on-site according to the different ablation sites. They usually bend the electrodes by hand. However, since the surgical electrodes need a certain rigidity and strength, it is very difficult for doctors to exert force. At the same time, the angle of the deformed electrode is uncontrollable. The existing design does not have enough margin, and the electrodes are easily damaged during the bending process.

[0090] To solve the above problems, such as Figure 14 As shown, the plasma surgical electrode also includes an angle adjuster 6, which has multiple arc-shaped grooves 61. The electrode body 2 extends into the corresponding arc-shaped grooves 61 to adjust the bending angle. The arc-shaped grooves 61 on the angle adjuster 6 allow for convenient adjustment of the bending angle of the electrode body 2 as needed, avoiding damage to the electrode body 2 caused by manually bending it. Each arc-shaped groove 61 has a different bending angle, allowing the electrode body 2 to be bent at different angles.

[0091] Furthermore, multiple arc-shaped grooves 61 are arranged along the circumferential direction of the angle adjuster 6 to achieve a compact arrangement of the arc-shaped grooves 61. One end of the arc-shaped groove 61 near the edge of the angle adjuster 6 penetrates the edge of the angle adjuster 6, so that the electrode body 2 can be easily inserted into the arc-shaped groove 61 for bending operation.

[0092] like Figure 16 As shown, the arc-shaped groove 61 includes a first groove segment 611 and a second groove segment 612 that are connected to each other. The first groove segment 611 and the second groove segment 612 are arranged at an angle. The first groove segment 611 is located near the edge of the second groove segment 612 close to the angle adjuster 6. The angle is greater than 0° and less than 180°. Through the aforementioned arc-shaped groove 61, the bending angle of the electrode body 2 can be within the range of greater than 0° and less than 180° to meet different application scenarios.

[0093] Optionally, the width of the groove opening of the arc-shaped groove 61 is 1 / 5 to 4 / 5 of the outer diameter of the electrode tube 22, so as to facilitate the positioning of the electrode body 2 within the arc-shaped groove 61.

[0094] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A plasma surgical electrode, characterized in that, include: The operating handle (1) has an internal cavity; The electrode body (2) includes an electrode tube (22) and an electrode blade (21) for cutting tissue. One end of the electrode tube (22) extends into the accommodating cavity. The electrode tube (22) includes an inner sleeve (222) and an outer sleeve (221) sleeved on the inner sleeve (222). The electrode blade (21) is provided at the end of the inner sleeve (222) away from the operating handle (1). A drip channel is formed between the outer sleeve (221) and the inner sleeve (222). At least two injection ports (2211) connected to the drip channel are provided circumferentially at the end of the outer sleeve (221) near the electrode blade (21). The sum of the flow rates of the liquid flowing out from each injection port (2211) increases from the bottom to the top of the outer sleeve (221) along the circumference of the outer sleeve (221). A drip assembly (4) passes through the receiving cavity and is connected to the drip channel to inject liquid into each of the injection ports (2211); The suction component (3) passes through the accommodating cavity and the inner sleeve (222) and is connected to the electrode blade (21). The operating handle (1) is provided with a vent (110) connected to the suction component (3). The flow rate in the suction component (3) is controlled by blocking and pressing the vent (110). The dimensions of each of the injection ports (2211) increase circumferentially from the bottom to the top of the outer sleeve (221) along the outer sleeve (221); or The number of injection ports (2211) increases from the bottom to the top of the outer tube (221) along the circumference of the outer tube (221).

2. The plasma surgical electrode according to claim 1, characterized in that, The plasma surgical electrode also includes: The input component (5) passes through the accommodating cavity and the electrode tube (22) and is connected to the electrode tip (21).

3. The plasma surgical electrode according to claim 2, characterized in that, The electrode tip (21) includes: A ceramic head (211) is provided with adsorption holes (2111) penetrating both ends thereon. One end of the ceramic head (211) is connected to the electrode tube (22), and the adsorption holes (2111) are connected to the suction assembly (3). A through hole (2112) is provided circumferentially around the adsorption holes (2111) penetrating both ends of the ceramic head (211), and the through hole (2112) is connected to the electrode tube (22). Electrode assembly (212) is disposed at the end of the ceramic head (211) that is not connected to the electrode tube (22), and the input component (5) is connected to the electrode assembly (212) through the through hole (2112).

4. The plasma surgical electrode according to claim 3, characterized in that, The electrode assembly (212) has a ring structure; or The electrode assembly (212) includes at least two electrode sheets (2121), which are disposed around the adsorption hole (2111) in a ring structure.

5. The plasma surgical electrode according to claim 3, characterized in that, A biological monitoring device is provided between the ceramic head (211) and the electrode assembly (212) to monitor the differences in tissue proteins before and after biological tissue ablation.

6. The plasma surgical electrode according to any one of claims 1-5, characterized in that, The plasma surgical electrode also includes: An angle adjuster (6) is provided with a plurality of arc-shaped grooves (61), and the electrode body (2) adjusts the bending angle by extending into the corresponding arc-shaped grooves (61).

7. The plasma surgical electrode according to claim 6, characterized in that, The arc-shaped groove (61) includes a first groove segment (611) and a second groove segment (612) that are connected to each other. The first groove segment (611) and the second groove segment (612) are arranged at an angle, the angle being greater than 0° and less than 180°.

8. The plasma surgical electrode according to claim 6, characterized in that, The width of the groove (61) is 1 / 5 to 4 / 5 of the outer diameter of the electrode tube (22).

9. The plasma surgical electrode according to any one of claims 1-4, characterized in that, The inner sleeve (222) includes: A first inner tube (2221) and a second inner tube sleeved on the first inner tube (2221). The end of the first inner tube (2221) near the electrode tip (21) is provided with multiple sets of hollow grooves at intervals along the axial direction of the first inner tube (2221). Each set of hollow grooves includes at least two cutting grooves (22211) arranged radially along the first inner tube (2221). The multiple sets of hollow grooves are spirally arranged along the axial direction of the first inner tube (2221). The area between two adjacent cuts (22211) in each set of hollow grooves is a connecting area (22210), and the thickness of the connecting area (22210) gradually decreases from the end away from the electrode tip (21) to the end closer to the electrode tip (21).

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