Washing and sucking assembly and ablation electrode

Abstract

The utility model relates to an irrigation and suction assembly and an ablation electrode, and belongs to the technical field of medical instruments. The ablation electrode comprises a body and a flushing and sucking assembly, the flushing and sucking assembly comprises a flushing and sucking pipe, a sucking pipe and a three-way connector, the three-way connector is arranged between the flushing and sucking pipe and the sucking pipe and can be used in cooperation with a liquid injection instrument, and the flushing and sucking pipe is selectively communicated with the sucking pipe or the liquid injection instrument through the three-way connector; the flushing pipe penetrates through the body and extends out of the front end of the body. According to the ablation electrode provided by the utility model, the body can complete radiofrequency ablation work, the flushing and sucking assembly can integrate a structure for realizing a sucking function and a structure for realizing a flushing function into a whole, the appearance is thin, the operation space can be effectively saved, and the advantages are reflected more obviously especially in narrow cavities such as nasal cavities.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a flushing and aspiration assembly and an ablation electrode. Background Technology

[0002] Rhinitis, or nasal inflammation, is an inflammation of the nasal mucosa caused by viruses, bacteria, allergens, various physical and chemical factors, and certain systemic diseases. The main pathological changes in rhinitis include congestion, swelling, exudation, hyperplasia, atrophy, or necrosis of the nasal mucosa. Rhinitis is a very common disease, affecting 40% of the global population. Because it is a non-fatal condition that primarily affects quality of life, many people do not take it seriously and few choose surgical treatment. Most people alleviate symptoms with simple treatments, but these are difficult to cure completely and relapse is common, with some patients experiencing regular relapses. Although not fatal, it significantly impacts daily life, especially affecting a patient's image in social situations. It also increases medical expenses, imposing unnecessary healthcare costs on society and patients.

[0003] Clinical studies have shown that the inflammatory process of the nasal mucosa is driven by parasympathetic nerve branches embedded in the inferior turbinate and lateral nasal wall tissues. This involves the motor supply and control signal function of the inflammatory cascade, as well as the physiological effects of submucosal glands (nasal discharge) and venous sinuses (congestion) within the nasal tissues. Ablation of the parasympathetic nerves in the lateral nasal wall can effectively reduce the occurrence of rhinitis.

[0004] The posterior nasal nerve enters the nasal cavity through the sphenopalatine foramen. It is mainly composed of postganglionic fibers of the pterygopalatine canal nerve branched from the sphenopalatine nerve and sensory fibers of the maxillary nerve. It contains three branches: the medial branch of the superior posterior nasal nerve, which is distributed in the nasal septum mucosa; the lateral branch of the superior posterior nasal nerve, which is distributed in the medial wall mucosa of the middle turbinate; and the inferior posterior nasal nerve, which is distributed in the sinus mucosa of the inferior turbinate. They regulate nasal function by controlling the dilation of most blood vessels and the secretion of glands in the nasal cavity.

[0005] Radiofrequency ablation, by destroying the posterior inferior nasal nerve, effectively blocks the neural regulatory pathways in the allergic rhinitis response process. This completely disables the sympathetic and parasympathetic nerve fibers, as well as some sensory nerve fibers, within this pathway in the nasal cavity, preventing the establishment of effective axonal reflexes and reducing the rapid onset of allergic reactions after exposure to allergens. The therapeutic effect is significant and definite. After posterior inferior nasal nerve block, the microvascular composition remains largely at pre-operative levels, but the glands in the nasal mucosa atrophy significantly, thus reducing the exudation of inflammatory cells such as neutrophils and lymphocytes during the allergic reaction. Furthermore, because the posterior inferior nasal nerve does not contain autonomic nerve fibers innervating the lacrimal gland, posterior inferior nasal nerve block does not result in adverse reactions such as reduced tear production and dry eye caused by pterygopalatine ganglion transection.

[0006] Insert the electrode tip along the lateral wall of the posterior nasal meatus. Gently push the radiofrequency ablation electrode tip upwards so that the treatment site is precisely at the anterior and posteroinferior margin of the middle turbinate to be treated. Then perform multi-point ablation on the submucosal and posterior posterior parts of the inferior turbinate.

[0007] In addition, to avoid burning normal tissue with the ablation electrode for rhinitis, saline solution is usually injected into the ablation site to facilitate cooling and rinsing. After rinsing, waste liquid or waste tissue is usually removed.

[0008] However, to achieve both suction and irrigation functions, conventional electrodes typically require two holes at the tip. One hole connects to the suction tube for suction, and the other connects to the irrigation tube for irrigation. This results in a larger electrode tip, making the already confined nasal cavity space even narrower and reducing the flexibility of the instrument, which can affect the operability and actual effectiveness of the surgery. Utility Model Content

[0009] Therefore, the purpose of this utility model is to provide a suction and ablation electrode. The suction and ablation assembly can integrate the structure that realizes the suction function and the structure that realizes the flushing function into a whole. It has a slim shape and can effectively save operating space, especially in narrow cavities such as the nasal cavity, where the advantages are more obvious.

[0010] The technical solution of this utility model is as follows:

[0011] This utility model provides a flushing and suction assembly for use with an ablation electrode, including a flushing and suction tube, a suction tube, and a three-way connector. The three-way connector is disposed between the flushing and suction tube and the suction tube and can be used with an injection device. The three-way connector selectively connects the flushing and suction tube to the suction tube or connects the flushing and suction tube to the injection device.

[0012] As an optional solution, the three-way connector includes port A, port B, and port C. The flushing and suction tube is connected to port A, the suction tube is connected to port B, and port C is used to connect to the injection device.

[0013] As an optional solution, the flushing tube is inserted into port A, the suction tube is inserted into port B, and port C is used for a detachable connection with the injection device.

[0014] As an optional solution, the tee connector includes a body and a valve switch, the valve switch being screwed onto the body to allow selective connection between port A and port B, or between port A and port C.

[0015] As an optional solution, the main body includes a flushing section, a suction section, and a rinsing section. The flushing section and the suction section form a suction channel, and the flushing section and the rinsing section form a rinsing channel. When the valve is turned, it can selectively connect one of the suction channel and the rinsing channel.

[0016] As an optional embodiment, the valve switch is provided with a wrench; the valve switch has a flushing state in which the wrench extends axially along the suction tube and a suction state in which the wrench extends axially along the injection device, or a suction state in which the wrench extends axially along the suction tube and a flushing state in which the wrench extends axially along the injection device.

[0017] This utility model also provides an ablation electrode, including a body and the above-mentioned flushing and suction assembly, wherein the flushing and suction tube passes through the body and extends from the front end of the body.

[0018] As an optional solution, the tee connector is exposed at the rear end of the body.

[0019] As an optional embodiment, the body includes a handle, a blade body, and an electrode head. The rear end of the blade body is connected to the handle, the electrode head is disposed at the front end of the blade body, and the suction tube passes through the handle and the blade body and extends from the front end of the blade body.

[0020] As an optional solution, the electrode head includes an insulating base and an electrode assembly. The front of the insulating base gradually tapers towards the back from back to front, forming a vacant area. The electrode assembly includes two electrode bodies arranged side by side with opposite polarities. The electrode bodies are disposed in the insulating base and extend towards both the vacant area and the front end, so that a continuous working surface is formed at the front end and on the front when it is working.

[0021] Alternatively, the front surface may be sloped or stepped.

[0022] Alternatively, the two electrode bodies are identical, and the electrode bodies are filamentous or sheet-like.

[0023] Alternatively, each of the electrode bodies may be wound into a ring shape, or may be combined with an insulating base to form a ring shape.

[0024] As an alternative, when viewed from the side, the electrode body protrudes from the outermost proximal end of the insulating base on the front.

[0025] As an optional solution, the ablation electrode also includes a camera, which is disposed on the insulating base and located between the two electrode bodies, with the camera facing the working surface of the electrode body.

[0026] As an optional solution, the camera and the insulating base can slide together in the front-to-back direction.

[0027] As an optional solution, the insulating base is provided with a mounting hole that extends through the insulating base in the front-to-back direction, and the camera is inserted into the mounting hole.

[0028] As an optional solution, a wire-passing groove is provided on one side of the blade body, and a slot is provided on one side of the insulating base, with the camera embedded in the slot.

[0029] As an optional solution, the camera is provided with insertion protrusions on both sides, and the card slot is provided with insertion sliding grooves on both sides, with the insertion protrusions slidably embedded in the insertion sliding grooves.

[0030] The beneficial effects of this utility model are:

[0031] In the ablation electrode provided by this utility model, the main body can complete radiofrequency ablation, and the flushing and suction assembly can integrate the structure that realizes the suction function and the structure that realizes the flushing function into a whole. It has a slim shape and can effectively save operating space, especially in narrow cavities such as the nasal cavity, where the advantages are more obvious. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The above and other objects, features, and advantages of this utility model will become clearer through the drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale to actual dimensions; the focus is on illustrating the main idea of ​​this utility model.

[0033] Figure 1 This is a schematic diagram of one state of the flushing and suction assembly provided in Embodiment 1 of the present invention;

[0034] Figure 2 This is a schematic diagram of another state of the flushing and suction assembly provided in Embodiment 1 of the present invention;

[0035] Figure 3 This is a schematic diagram of the ablation electrode provided in Embodiment 2 of the present invention;

[0036] Figure 4 for Figure 3 A magnified view of part A;

[0037] Figure 5 This is a schematic diagram of the front end structure of the ablation electrode provided in Embodiment 2 of the present invention. Figure 1 ;

[0038] Figure 6 This is a schematic diagram of the front end structure of the ablation electrode provided in Embodiment 2 of the present invention. Figure 2 ;

[0039] Figure 7 This is a schematic diagram of the front end structure of the ablation electrode provided in Embodiment 2 of the present invention. Figure 3 - Side view;

[0040] Figure 8 This is a schematic diagram of the structure of the camera for the ablation electrode provided in Embodiment 2 of the present invention. Figure 1 ;

[0041] Figure 9 This is a schematic diagram of the front end of the ablation electrode provided in Embodiment 2 of the present invention.

[0042] Figure 10 This is a schematic diagram of another front-end structure of the ablation electrode provided in Embodiment 2 of the present invention;

[0043] Figure 11 This is a schematic diagram of the front end (without camera) of the ablation electrode provided in Embodiment 3 of the present invention;

[0044] Figure 12 This is a schematic diagram of the camera structure for the ablation electrode provided in Embodiment 3 of the present invention. Figure 2 ;

[0045] Figure 13 for Figure 11 and Figure 12 A schematic diagram of the cooperation relationship.

[0046] Icons: 10-Ablation electrode; 11-Handle; 12-Scalpel body; 13-Insulating base; 14-Electrode assembly; 15-Camera; 16-Purge and suction assembly; 110-Cable; 111-Wire; 120-Wire groove; 121-Slot; 122-Plug-in boss; 123-Plug-in slide; 130-Back side; 131-Front side; 132-Mounting hole; 133-Suction and flushing hole; 134-Unused area; 140-Working electrode; 141-Return electrode; 142-Section 1; 143-Section 2; 144-Section 3; 145-Section 4; 150-Endoscope module; 151-LED light; 152-Connecting wire; 160-Purge and suction tube; 161-Suction tube; 162-T-connector; 163-Injection instrument; 164-Port A; 165-Port B; 166-Port C. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0049] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0050] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0051] Example 1: Please refer to Figure 1 , Figure 2 As shown, Embodiment 1 of this utility model provides a flushing and suction assembly 16, which is used to flush the surgical area and suction out waste fluid from the surgical area. The flushing and suction assembly 16 is mainly used in ablation electrodes for rhinitis, etc. Of course, in some embodiments, the flushing and suction assembly 16 can also be used in other medical devices, such as medical planers, medical shaving knives, etc.

[0052] First, it should be noted that the terms "anterior" and "posterior" in this embodiment are defined in terms of their positional relationship with the lesion site. "Anterior" refers to the area closer to the lesion site, while "posterior" refers to the area farther from the lesion site, i.e., the distal end. Of course, the definitions of "anterior" and "posterior" are only relative and not absolute, and are for reference only.

[0053] Generally, the flushing and aspiration assembly 16 can be used in conjunction with the injection device 163. Of course, the injection device 163 mentioned here is not limited to a syringe-shaped syringe, but can also be a water pump, water tubing, or other types. The term "injection device 163" is used here for ease of description. The injection device 163 can be considered as a component of the flushing and aspiration assembly 16, or it can be excluded from being considered as a component of the flushing and aspiration assembly 16, and is only used in conjunction with it during use.

[0054] The flushing and suction assembly 16 includes a flushing and suction tube 160, a suction tube 161, and a three-way connector 162, with the three-way connector 162 disposed between the flushing and suction tube 160 and the suction tube 161.

[0055] The tee connector 162 includes a main body and a valve switch. The main body has flow channels, and the valve switch is used to control the opening and closing of different flow channels within the main body.

[0056] The main body adopts a three-way tube structure with three ports: A port 164, B port 165, and C port 166. Port A 164 mates with and is connected to the flushing / suction tube 160; port B 165 mates with and is connected to the suction tube 161; and port C 166 is used to connect to the injection device 163. Alternatively, port C 166 and the injection device 163 can also be indirectly connected via a flushing tube.

[0057] The connection methods between port A 164 and the flushing tube 160, port B 165 and the suction tube 161, and port C 166 and the injection device 163 are not limited. They can be integrally molded, or they can be plugged in, threaded, bonded, or integrally molded.

[0058] The main body is divided into three sections: a flushing / suction section, a suction section, and a rinsing section. The valve switch is located at the junction of these three sections. When the flushing / suction section and the suction section are connected, a suction channel is formed, and ports A164 and B165 are connected. When the flushing / suction section and the rinsing section are connected, a rinsing channel is formed, and ports A164 and C166 are connected. When the valve switch is turned, it can selectively connect either the suction channel or the rinsing channel, resulting in two states: the flushing / suction section is connected to the suction section but disconnected from the rinsing section, or the flushing / suction section is connected to the rinsing section but disconnected from the suction section.

[0059] The valve switch style is not limited; it can be a screw-on type, a push-button type, etc. The tee connector 162 selectively connects the flushing / suction tube 160 to the suction tube 161 or connects the flushing / suction tube 160 to the injection device 163. For details, please refer to... Figure 1 As shown, when the valve switch is in the first position, port A 164 and port B 165 are connected, meaning the flushing and suction tube 160 is connected to the suction tube 161. At this time, port A 164 and port C 166 are closed, meaning the flushing and suction tube 160 and the infusion device 163 are not connected. Under the action of the suction device, nasal blood, nasal mucus, or waste saline solution can be suctioned out from the surgical area, keeping the surgical area clean. In this state, the infusion device 163 can be left uninstalled. Please refer to... Figure 2As shown, when the valve switch is rotated or pressed to the second position, port A 164 and port C 166 are connected, that is, the flushing and suction tube 160 is connected to the injection device 163. At this time, port A 164 and port B 165 are closed, that is, the flushing and suction tube 160 and the suction tube 161 are not connected. The injection device 163 can deliver saline solution or other fluids for flushing to the surgical area to flush the nasal cavity, prevent the camera 15 from fogging up, and make the field of vision clearer. Figure 1 and Figure 2 The arrow next to the flushing and aspiration component 16 indicates the flow direction of the saline solution or waste liquid inside it.

[0060] Since the ablation treatment for rhinitis does not require simultaneous suction and irrigation functions, the structure of the suction and irrigation components 16 is improved to integrate the structures that realize the suction function and the structures that realize the irrigation function into one unit. The slim shape can effectively save operating space, especially in the narrow nasal cavity, where the advantages are more obvious.

[0061] Furthermore, in some embodiments, to enable medical personnel to more intuitively understand the status of the flushing and suction assembly 16, an identification structure can be added. For example, the valve switch is equipped with a wrench with two stop points: a first stop point and a second stop point. When the wrench is at the first stop point, it extends axially along the suction section, at which time the flushing and suction section and the rinsing section are connected. When the wrench is at the second stop point, it extends axially along the rinsing section, at which time the flushing and suction section and the suction section are connected. Of course, in other embodiments, other solutions can also be adopted, for example: when the wrench is at the first stop point, the flushing and suction section and the rinsing section are connected; when the wrench is at the second stop point, the flushing and suction section and the suction section are connected.

[0062] Furthermore, markings such as "ON" and "OFF" can be set on the wrench so that medical staff know which way the wrench is facing and whether that way is on or off.

[0063] Example 2: Please refer to Figure 3 As shown, Embodiment 2 of this utility model provides an ablation electrode 10, which is electrically connected to a radiofrequency host and can ablate the parasympathetic nerves of the nasal lateral wall at the lesion site, thereby blocking the posterior inferior nasal nerve. Of course, this ablation electrode 10 can also be used to ablate other lesion sites or in open surgery.

[0064] In this regard, please combine Figures 3-7 As shown, the ablation electrode 10 is mainly composed of a body and a flushing and suction assembly 16, wherein the structure of the flushing and suction assembly 16 can refer to the scheme in Embodiment 1.

[0065] The flushing and aspiration assembly 16 has a flushing and aspiration tube 160 inserted into the main body. The front end of the flushing and aspiration tube 160 extends from the front end of the main body. Physiological saline can flow out from the front end of the flushing and aspiration tube 160 and flush the area around the front end of the main body. In addition, waste liquid, waste tissue, etc. around the front end of the main body can enter the flushing and aspiration tube 160 from the front end of the flushing and aspiration tube 160 and be extracted.

[0066] The rear end of the flushing and suction tube 160 can extend from the rear end of the body. At this time, the tee connector 162 is exposed at the rear end of the body, and the suction tube 161 is also exposed. This structure facilitates production and assembly. For example, when producing the body, only the flushing and suction tube 160 can be installed or integrated into the body, and then the tee connector 162 and the suction tube 161 can be assembled.

[0067] Of course, in some embodiments, the tee connector 162 can be located at a rear position inside the body. In this case, the front end of the suction tube 161 can be exposed or inserted into the body and connected to the tee connector 162.

[0068] The structure of the main body is not limited and can adopt the structure of existing technology. Generally speaking, the main body mainly consists of a handle 11, a cutter head body 12, and an electrode head. Of course, in other embodiments, depending on the function of the device, the electrode head can be replaced with various styles such as a grinding head or a planer head.

[0069] The style of the electrode head is not limited and can refer to the technical solutions in the prior art. It consists of an insulating base 13 and an electrode assembly 14. The handle 11, the blade body 12, the insulating base 13 and the electrode assembly 14 are connected in sequence. That is, the rear end of the blade body 12 is connected to the handle 11, the insulating base 13 is located at the front end of the blade body 12, and the electrode assembly 14 is installed on the insulating base 13. The following is a detailed discussion of each component of the ablation electrode 10.

[0070] The handle 11 is mainly for doctors to hold. Switches and buttons can be set on the handle 11. Doctors can grasp the handle 11 and press the switch in time to control the ablation electrode 10 to work or turn off, or adjust the position of the electrode assembly 14.

[0071] The structure of the handle 11 is not limited and can refer to existing technologies. For example, the handle 11 can be cylindrical, flat, irregularly shaped, or of various other types. Furthermore, the material and manufacturing method of the handle 11 are not limited; it can be a one-piece structure or composed of two half-shells joined together. Further details will not be elaborated here. A cable 110 can be provided on the handle 11. The cable 110 can extend from the rear end of the handle 11 and be used for electrical connection to the radio frequency host, which can provide radio frequency energy to the ablation electrode 10. Of course, the cable 110 can also extend from the middle or front end of the handle 11.

[0072] The blade body 12 has a rod-like structure, which can be rod-shaped or tubular, such as round rod, square rod, round tube, square tube, triangular tube, etc. The material of the blade body 12 is not limited; it can be metallic or non-metallic. The blade body 12 can be straight or pre-bent at a certain angle; the bending angle is not limited and can be set as needed. In this embodiment, the blade body 12 can be made of soft or semi-hard stainless steel tubing. During surgery, the surgeon can adjust the bending angle of the blade body 12 according to the surgical needs, so that the insulating seat 13 and electrode assembly 14 at its front end fit more closely to the lesion site, facilitating more precise surgery. Of course, in other embodiments, the blade body 12 can also be made of inflexible materials such as hard steel tubing, or the blade body 12 can be divided into two hinged ends.

[0073] The rear end of the cutter head body 12 is connected and fixed to the handle 11. A portion of the rear end of the cutter head body 12 can be inserted into the handle 11. The connection method between the two is not limited, such as plugging, snapping, welding, or bonding. The cutter head body 12 mainly serves to connect and support the insulator. Of course, if the cutter head body 12 is hollow inside, a wire 111 can also be run through it. That is, the wire 111 extends from the inside of the cutter head body 12 to its front end and is electrically connected to the electrode assembly 14. The rear end of the wire 111 is electrically connected to the cable 110 so that the electrode assembly 14 can be connected to the radio frequency host.

[0074] The diameter and length of the blade body 12 are not limited and can be set as needed. It can be thick or thin, long or short. For example, in this embodiment, the diameter of the blade body 12 is 3mm-5mm, preferably 3mm, 4mm, 5mm, etc. If it is a special case or used for surgery in other parts of the body, a thinner or thicker blade body 12 can be selected according to the actual situation.

[0075] The insulating base 13 is disposed at the front end of the cutter head body 12. The connection method between the two is not limited, such as bonding, welding, snap-fitting, plugging, etc. In this embodiment, the following scheme can be adopted, but is not limited to: the front end of the cutter head body 12 is provided with a tubular part, and the rear end of the insulating base 13 is provided with a plug-in part. The plug-in part is inserted into the tubular part and the two are fixed.

[0076] The insulating base 13 has a back side 130 and a front side 131, which are located on opposite sides of the insulating base 13.

[0077] For ease of description, the following definitions are made here: the insulating seat 13 has a front-back direction, a thickness direction, and a left-right direction. The front-back direction of the insulating seat 13 is consistent with the front-back direction of the ablation electrode 10. The thickness direction of the insulating seat 13 refers to the direction from the back side 130 to the front side 131 or from the front side 131 to the back side 130. The front-back direction, thickness direction, and left-right direction of the insulating seat 13 can be perpendicular to each other.

[0078] In this design, from back to front, the front surface 131 gradually contracts towards the back surface 130, meaning the front surface 131 contracts towards the center of the insulating base 13 (or may extend beyond the center). The front surface 131 gradually approaches the back surface 130 along the thickness direction of the insulating base 13, thus gradually reducing the thickness of the insulating base 13. The recessed portion forms an empty area 134. This design minimizes the volume of the insulating base 13 while maintaining its strength, allowing for more space to accommodate the electrode assembly 14 or other components. The shape of other parts of the insulating base 13 is not limited; for example, it can be a cylindrical surface, a prismatic surface, etc.

[0079] The back surface 130 can be a flat plane parallel to the front-back direction, or it can be gradient-treated. For example, the back surface 130 gradually tapers towards the front surface 131 or the center of the insulating seat 13. Similarly, the sides of the insulating seat 13 can also be appropriately gradient-treated so that its cross-sectional area gradually decreases in the front direction. This arrangement can minimize the obstruction of the electrode assembly 14 by the insulating seat 13, resulting in greater field of view and more precise surgery. Of course, in some embodiments, the back surface 130 and sides of the insulating seat 13 may not be gradient-treated.

[0080] The style of the front 131 contraction is not limited, and the following two schemes can be used, but are not limited to:

[0081] The first option, please combine Figure 7 As shown, the front surface 131 has a gradually sloping shape. The front surface 131 can be a plane, a curved surface, or partly a plane and partly a curved surface, or it can be composed of several intersecting planes. This design makes the contraction of the front surface 131 relatively gentle and smooth.

[0082] The second option (not shown in the figure) has a stepped front 131 with several steps. The number of steps is unlimited, such as one, two, three, etc., and there is a cliff-like drop between any two adjacent steps.

[0083] Of course, in other embodiments, the front side 131 can also adopt both of the above schemes at the same time, that is, a part of the front side 131 adopts the first scheme and the other part adopts the second scheme.

[0084] The electrode assembly 14 is fixed on the insulating base 13 and can output radio frequency energy at the lesion site. If the blade body 12 is made of a conductive metal material, the electrode assembly 14 needs to be insulated from the blade body 12. If the blade body 12 is made of a non-conductive non-metallic material, the electrode assembly 14 may or may not be in contact with the blade body 12.

[0085] Specifically, the electrode assembly 14 includes two electrode bodies arranged side by side within the vacant area 134. The two electrode bodies have opposite polarities and are designated as a working electrode 140 and a return electrode 141, respectively. The working electrode 140 and the return electrode 141 are positioned opposite each other. The working electrode can be distributed along the left-right direction of the insulating base 13, with the working electrode 140 and the return electrode 141 adjacent to the left and right sides of the insulating base 13, respectively. The term "two electrode bodies" is only a minimum; in other embodiments, the number of electrode bodies can be three, four, or other combinations.

[0086] There is a certain gap between the working electrode 140 and the circuit electrode 141. The gap size can be set as needed, such as 1mm-5mm, preferably 1mm, 2mm, 3mm, 4mm, 5mm, etc., which will not be elaborated here.

[0087] The working electrode 140 and the return electrode 141 are electrically connected to the two poles of the radio frequency host through the cable 110 and the wire 111, respectively. The cable 110 can pass through the inside of the cutter head body 12.

[0088] The two electrode bodies are identical, for example, identical in shape and size. The electrode bodies are made of conductive metal materials and can be wire electrodes, sheet electrodes, etc. In this embodiment, the electrode body is a wire electrode, and its diameter can be set as needed, for example, 0.3mm-1mm, preferably 0.3mm, 0.5mm, 0.7mm, 1mm, etc. In special cases or for surgery in other parts of the body, a thinner or thicker electrode wire can be selected according to the actual situation.

[0089] The electrode body is disposed on the insulating base 13, and extends both towards the front end and the empty area 134. When the electrode body is working, the front end and the front surface of the electrode body form a continuous working surface. Specifically, in this embodiment, the electrode body extends from the front end of the insulating base 13 and bends to extend to the middle of the front surface 131. The extension length of the electrode body from the front end of the insulating base 13 is not limited. Please refer to... Figure 10 As shown, if the extension length is large, a portion of the electrode body can be covered with an insulating layer, which can be heat shrink tubing or other types. Of course, the extension portion can also be left uncovered. This allows the electrode body to extend further towards the front end without changing the length of the insulating base 13, or it can reduce the length of the insulating base 13 to increase the exposed length of the electrode body.

[0090] The phrase "the electrode extends from the front end of the insulating base 13" does not mean "the electrode extends from the front end face of the insulating base 13," but rather "the electrode extends forward from the front end face of the insulating base 13 or a position near the front end face." Generally, the electrode extends beyond the very front end of the insulating base 13, with the extension length being 0-2 mm. Of course, in other embodiments, it is not excluded that the electrode is located behind the very front end of the insulating base 13, i.e., the electrode does not extend beyond the very front end of the insulating base 13. However, relatively speaking, this arrangement is less convenient to operate and is inconvenient to operate inside the nasal passage.

[0091] The working electrode 140 and the circuit electrode 141 form a continuous working surface at the front end and the front side of the insulating base 13. The continuous working surface includes the front working surface and the front working surface, which has a wider range of applications. It does not require the surgeon to shape the blade body 12 during the operation, and can easily handle nerve ablation treatment in areas such as the sphenopalatine mouth and inferior turbinate. When treating nerves in the sphenopalatine mouth, the front working surface of the electrode is used, and when treating nerves in the inferior turbinate, the front working surface of the electrode is used.

[0092] The electrode body is located in the empty area 134, and the front side 131 adopts a stepped or gradient design, which can ensure that the front end of the ablation electrode 10 can minimize its volume while ensuring that its contact area with the lesion tissue on one side is larger, and there is no need to bend the blade body 12.

[0093] The electrode body itself is wound into a ring shape or the electrode body and the insulating base 13 are combined to form a ring shape. The ring shape can be circular, square, polygonal or irregular.

[0094] To ensure better contact between the electrode and the lesion tissue, in this embodiment, viewed from the side, the electrode protrudes from the outermost proximal end of the insulating base 13 on the front side. Figure 7 For example, the lowest point of the electrode body is lower than the lowest point on the left side of the insulating base 13. Of course, in other embodiments, the electrode body can also be positioned on the front side lower than the outermost proximal end of the insulating base 13.

[0095] If the electrode body and the insulating seat 13 cooperate to form a ring, the electrode body can be arc-shaped, circular, oval, etc., or can be a multi-segment intersecting straight line. In this embodiment, as shown in Fig. 5, the electrode body includes a first section 142, a second section 143, a third section 144, and a fourth section 145. The lengths of the first section 142, the second section 143, the third section 144, and the fourth section 145 can be set as needed. The first section 142, the second section 143, the third section 144, and the fourth section 145 are connected in sequence, and these parts can be integrally formed or separately arranged and welded. The first section 142, the second section 143, the third section 144, and the fourth section 145 can be straight segments, arc segments, or part straight segments and part arc segments. In other embodiments, the electrode body can also adopt various other shapes. For example, the electrode body can also be divided into straight sections and arc sections. The straight section extends from the front end of the insulating seat 13 and is a straight segment, and the arc section extends backward from the front end of the straight section, and the arc section adopts an arc shape, such as a circular arc, a semi-circular arc, an oval arc, etc.

[0096] Between the first section 142 and the second section 143, between the second section 143 and the third section 144, and between the third section 144 and the fourth section 145, there can be a smooth transition or a non-smooth transition. Since the front working surface and the front-facing working surface need to contact the lesion site, therefore, between the second section 143 and the third section 144, and between the third section 144 and the fourth section 145, a smooth transition is preferred, that is, the intersection adopts an arc structure.

[0097] The first section 142 and the third section 144 extend along the front-back direction of the insulating seat 13, the second section 143 and the fourth section 145 extend along the thickness direction of the insulating seat 13, the end of the fourth section 145 is located in the middle of the front surface 131, and the electrode body as a whole is in the shape of a "square" with a corner missing.

[0098] Please refer to Figure 5 、 Figure 6 、 Figure 8 As shown, the insulating member is provided with a suction and flushing hole 133. The size, position, etc. of the suction and flushing hole 133 are not limited. The flushing suction pipe 160 is disposed through the cutter head body 12 and passes through the suction and flushing hole 133. The front end of the flushing suction pipe 160 extends out from the front end of the insulating seat 13, and the front end of the flushing suction pipe 160 can be located between the working electrode 140 and the return electrode 141; the rear end of the suction pipe 161 is connected to the suction device. Of course, in other embodiments, it is also possible not to provide the suction and flushing hole 133 on the insulating member. For example, the front end of the flushing suction pipe 160 extends from one side of the insulating seat 13 to between the working electrode 140 and the return electrode 141; and the front end of the flushing suction pipe 160 can also not be located between the working electrode 140 and the return electrode 141. For example, the front end of the flushing suction pipe 160 is located behind or on one side of the working electrode 140 or the return electrode 141, etc.

[0099] In conventional procedures, doctors need to hold a rigid endoscope in one hand and an electrode in the other to perform the surgery. A large space is required to accommodate the use of the endoscope and the electrode. If the nasal cavity structure is abnormally narrow, such as a deviated septum or swollen nasal mucosa, the endoscope and the electrode will often fight for space, making the operation very inconvenient for doctors. Therefore, narrow nasal cavities require as few surgical instruments as possible.

[0100] Therefore, in this embodiment, please refer to Figure 8 As shown, the ablation electrode 10 may further include a camera 15, which is disposed on the insulating base 13. The front end of the camera 15 extends between the two electrode bodies, and both the front working surface and the front working surface need to fall within the field of view of the camera 15. The front working surface and the front working surface can fall within the field of view of the camera 15 simultaneously, or the direction of the camera 15 can be adjusted so that at least one of them falls within the field of view of the camera 15 at a certain moment. Of course, in other embodiments, the ablation electrode 10 may not include a camera 15.

[0101] The design of the camera 15 is not limited and can refer to existing technologies. In this embodiment, the camera 15 is an endoscope module 150 with a light. The camera 15 consists of an endoscope module 150, an LED light 151, and a connecting cable 152. The LED light 151 is the light source that can illuminate the surgical area. The connecting cable 152 can be part of the cable 110. The two can also be set independently and electrically connected. The endoscope module 150 captures images through the lens and converts the light signals into electrical signals. Then, the images are digitally processed by the image sensor. Finally, the processed images are displayed on the screen through the control unit to help doctors accurately judge the condition, find the appropriate surgical site, and observe the progress of the surgery.

[0102] Without increasing the size of the ablation electrode 10, integrating the camera 15 into the electrode not only increases the operating space for doctors in the nasal cavity, but also allows doctors to operate with one hand, freeing up one hand to do other things.

[0103] The connection method between the camera 15 and the insulating base 13 is not limited. For example, the two can be fixedly connected or integrally formed. The position of the camera 15 on the insulating base 13 can remain stationary or slide back and forth relative to the insulating base 13. If the camera 15 can slide back and forth on the insulating base 13, the field of view of the camera 15 can be changed, making it easier for doctors to adjust the field of view in a timely manner.

[0104] In this embodiment, the following solutions may be adopted, but are not limited to: Please combine Figure 9As shown, the insulating base 13 is provided with a mounting hole 132, which extends through the insulating base 13 in the front-to-back direction. The front end of the mounting hole 132 is located at the front face 131. The camera 15 is inserted into the mounting hole 132, and the front end of the camera 15 extends out from the front end of the mounting hole 132. The cable 110 of the camera 15 is inserted into the blade body 12. This arrangement ensures that the camera 15, the working electrode 140, and the return electrode 141 are all located on the insulating component. The camera 15 is located between the working electrode 140 and the return electrode 141, facilitating observation of the nasal cavity structure, locating a suitable surgical site, and monitoring the progress of the surgery.

[0105] Example 3: Example 3 of the present invention provides an ablation electrode 10. The difference between this example and Example 2 is the cooperation relationship between the blade body 12, the insulating seat 13 and the camera 15.

[0106] Please combine Figures 11-13 As shown, a slot 121 is provided on one side of the insulating base 13. The position, shape, and size of the slot 121 are not limited. For example, it can be located on the first side, left or right sides, etc. of the insulating base 13. The camera 15 is embedded in the slot 121. The fixing method of the two is not limited. For example, it can be snap-fit ​​or glued. In this embodiment, the two sides of the camera 15 are provided with insertion protrusions 122. The cross-section of the insertion protrusions 122 can be arc-shaped, triangular, rectangular, etc. The two sides of the slot 121 are provided with insertion sliding grooves 123. The shape of the insertion sliding grooves 123 matches the insertion protrusions 122. The two can be the same or approximately the same. The insertion protrusions 122 are slidably embedded in the insertion sliding grooves 123. The insertion protrusions 122 can slide back and forth along the insertion sliding grooves 123 to adjust the position of the camera 15.

[0107] A wire-passing groove 120 is provided on one side of the blade body 12. The wire-passing groove 120 is recessed inward and its shape is not limited. For example, its cross-section can be a superior arc shape, a inferior arc shape, a rectangle, etc. The cable 110 of the camera 15 is embedded in the wire-passing groove 120. The two can be snapped together for easy wiring.

[0108] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flush and draw assembly, comprising: It includes a flushing and suction tube, a suction tube, and a three-way connector. The three-way connector is located between the flushing and suction tube and the suction tube and can be used with an injection device. The three-way connector can selectively connect the flushing and suction tube to the suction tube or connect the flushing and suction tube to the injection device.

2. The ram-impulse assembly of claim 1, wherein The three-way connector includes port A, port B, and port C. The flushing and suction tube is connected to port A, the suction tube is connected to port B, and port C is used to connect to the injection device.

3. The ram-impingement assembly of claim 2, wherein, The tee connector includes a main body and a valve switch. The valve switch is screwed onto the main body to allow selective connection between port A and port B, or between port A and port C.

4. The ram-impingement assembly of claim 3, wherein, The main body includes a flushing section, a suction section, and a rinsing section. The flushing section and the suction section form a suction channel, and the flushing section and the rinsing section form a rinsing channel. When the valve is turned, it can selectively connect one of the suction channel and the rinsing channel.

5. The ram-impingement assembly of claim 3, wherein, The valve switch is equipped with a wrench; the valve switch has a flushing state in which the wrench extends axially along the suction tube and a suction state in which the wrench extends axially along the injection device, or a suction state in which the wrench extends axially along the suction tube and a flushing state in which the wrench extends axially along the injection device.

6. An ablation electrode, characterized by, It includes a body and a flushing and suction assembly as described in any one of claims 1-5, wherein the flushing and suction tube passes through the body and extends from the front end of the body.

7. The ablation electrode of claim 6, wherein, The tee connector is exposed at the rear end of the body.

8. The ablation electrode of claim 6, wherein, The main body includes a handle, a blade body, and an electrode head. The rear end of the blade body is connected to the handle, and the electrode head is located at the front end of the blade body. The suction tube passes through the handle and the blade body and extends from the front end of the blade body.

9. The ablation electrode of claim 8, wherein, The electrode head includes an insulating base and an electrode assembly. The front of the insulating base gradually tapers towards the back from back to front, forming a vacant area. The electrode assembly includes two electrode bodies arranged side by side with opposite polarities. The electrode bodies are disposed in the insulating base and extend towards the vacant area and the front end simultaneously, so that a continuous working surface is formed at the front end and the front end when it is working.

10. The ablation electrode of claim 9, wherein, The front surface is sloping or stepped.

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