Ablation electrode for ear-nose-throat
By designing the ablation electrodes of the tubular first electrode and the sheet-shaped second electrode, using the structure of the suction through holes and sharp corners, the problems of suction blockage and attractive dispersion of existing ablation electrodes during work are solved, and better attraction effect and large-area ablation ability are achieved.
Patent Information
- Application Number
- CN202421347893.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-13
AI Technical Summary
Existing ablation electrodes for ENT are prone to attraction blockage or dispersed attraction during work, resulting in poor surgical results, prolonged surgical time and unclear vision.
An ablation electrode including a tubular first electrode and a sheet-shaped second electrode is designed. The central part of the second electrode is provided with an attractive through hole, which is in communication with the attraction hole of the first electrode, and has several sharp corners inside to enhance the attraction effect.
The ablation electrode can effectively avoid suction blockage and attractive dispersion, improve the attraction effect, make the waste tissue easier to pass, and maintain good attraction performance while ablation on a large area.
Smart Images
Figure CN222828654U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an ablation electrode for ears, nose and throat. Background Art
[0002] There are two main structures of plasma active medical devices used for large-area ablation of ENT, nose and throat, namely sheet electrodes and wire electrodes. Although the existing sheet electrodes and wire electrodes have their own characteristics and can achieve large-area ablation, it is difficult to solve the problem of clogging the suction tube during suction operation. Existing plasma active medical devices used for large-area ablation of ENT, whether sheet electrodes or wire electrodes, will have multiple suction blockage problems after a certain period of operation.
[0003] A wire electrode will use more than one electrode wire as an electrode: if there is only one electrode wire, the tissue to be removed is very large and difficult to be sucked away; if there are two electrode wires, the same situation will occur, the tissue to be removed is very large and difficult to be sucked away; if there are multiple electrode wires, the discharge ability of the middle electrode wire will be weak, and the purpose of cutting and ablation cannot be achieved. It will also release a large amount of heat energy, causing the tissue to adhere to the electrode, resulting in the wire electrode being unable to be used normally.
[0004] Although sheet electrodes can avoid the problems of wire electrodes, they still cannot solve the blockage problem. The inherent thinking of the existing structural design is to make the middle of the electrode sheet hollow, so that it can attract and cut and ablate at the place of attraction. But the actual situation is that the electrode itself is very small, which will cause the hollow holes on the electrode sheet to be very small, and even slightly larger tissues cannot pass through. Due to the hollowing effect, the attraction will also be dispersed, and the attraction will be blocked where there is an electrode, so the attraction effect is not good.
[0005] Blockage will bring the following consequences: 1. Blockage occurs at the working part of the front end of the electrode, which will greatly weaken the effectiveness of the electrode and lead to poor surgical results; 2. In order to clear the electrode, it takes time to deal with the blockage, which will prolong the operation time and reduce the efficiency of the operation; 3. After the blockage occurs, it will lead to the inability to normally suck out excess bubbles and waste water, which will lead to poor surgical field of view and affect the normal progress of the operation; 4. If the blockage occurs in the suction tube, it is difficult to clear and may be a permanent blockage. Utility Model Content
[0006] In view of this, the purpose of the utility model is to provide an ablation electrode for the ear, nose and throat, which can achieve large-area ablation and is not prone to suction blockage or suction dispersion, thereby providing a better suction effect; and, because the suction through-hole has sharp corners, it can cause strong discharge around it, which will cut the diseased tissue into smaller pieces and make it easier for waste tissue to pass through the suction through-hole.
[0007] The technical solution of the present utility model is as follows:
[0008] The present utility model provides an ablation electrode for ENT, including a first electrode, a second electrode and an insulating head. The first electrode is tubular and covered with an insulating layer on the outside. The front end of the first electrode is exposed. The second electrode is connected to the front end of the first electrode through the insulating head. The second electrode is in a sheet structure and has a suction through hole in the central part. The suction through hole is communicated with the suction hole of the first electrode, and there are several sharp corners in the suction through hole.
[0009] As an optional solution, several protruding parts extending inwards are arranged in the suction through hole, and the protruding parts form sharp corners.
[0010] As an optional solution, the suction through hole adopts one of a star shape, a cross shape, and a polygonal shape.
[0011] As an optional solution, the second electrode includes a central part and several tentacles, and the tentacles are distributed at intervals around the central part.
[0012] As an optional solution, the second electrode is in a shape of a Chinese character "feng".
[0013] As an optional solution, the size of the suction through hole is smaller than the size of the suction hole.
[0014] As an optional solution, the front end of the first electrode is bent.
[0015] As an optional solution, the bending angle of the first electrode is ∠A, where ∠A is 30°.
[0016] As an optional solution, the insulating head is columnar and is provided with a central hole and several edge holes, and the central hole and the suction hole are communicated through the suction through hole.
[0017] As an optional solution, several water outlet holes are arranged on one side of the front end of the first electrode.
[0018] As an optional solution, it further includes a handle, a suction tube and a drip tube. The rear end of the first electrode is connected to the handle. The suction tube is communicated with the suction hole, and the drip tube is communicated with the water outlet hole.
[0019] The beneficial effects of the present utility model are:
[0020] The utility model provides an ablation electrode for ear, nose and throat, in which the front end of the first electrode and the second electrode form an ablation bipolar, and the second electrode adopts a sheet structure, which can realize large-area ablation, and the suction through hole can attract waste tissue, etc., and it is not easy to cause suction blockage or suction dispersion, and the suction effect is better; and because the suction through hole has a sharp corner, it can cause strong discharge around it, which will cut the diseased tissue into smaller pieces, making it easier for the waste tissue to pass through the suction through hole, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. As shown in the drawings, the above and other purposes, features and advantages of the utility model will be clearer. The same reference numerals in all the drawings indicate the same parts. The drawings are not deliberately scaled according to the actual size, and the focus is on showing the main purpose of the utility model.
[0022] Figure 1 A schematic diagram of the structure of an ablation electrode provided in an embodiment of the utility model;
[0023] Figure 2 A schematic diagram of the structure of the electrode assembly of the ablation electrode provided in the embodiment of the utility model Figure 1 ;
[0024] Figure 3 A schematic diagram of the structure of the electrode assembly of the ablation electrode provided in the embodiment of the utility model Figure 2 ;
[0025] Figure 4 for Figure 3 Schematic diagram of the A-direction local area (without insulation layer);
[0026] Figure 5 A schematic diagram of the structure of the second electrode of the ablation electrode provided in an embodiment of the utility model Figure 1 ;
[0027] Figure 6 A schematic diagram of the structure of the second electrode of the ablation electrode provided in an embodiment of the utility model Figure 2 ;
[0028] Figure 7 A schematic diagram of the structure of the second electrode of the ablation electrode provided in an embodiment of the utility model Figure 3 ;
[0029] Figure 8A schematic diagram of the matching relationship between the first electrode and the insulating head of the ablation electrode provided in an embodiment of the utility model.
[0030] Icons: 10, ablation electrode; 110, first electrode; 111, water outlet; 120, second electrode; 121, suction through hole; 122, protrusion; 123, center; 124, tentacle; 125, filament angle; 130, insulating head; 131, center hole; 132, edge hole; 140, insulating layer; 150, handle; 151, suction tube; 152, drip tube. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0032] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0034] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.
[0035] Please refer to Figure 1 As shown, an embodiment of the utility model provides an ablation electrode 10 for ear, nose and throat, which can be applied to ear, nose and throat surgery to ablate a large area of lesion tissue, and is not prone to blockage during suction operation.
[0036] First, we need to define "front" and "rear". The "front" in this embodiment refers to the direction close to the lesion site, and the "rear" refers to the direction far away from the lesion site.
[0037] The ablation electrode 10 is mainly composed of an electrode assembly and a handle assembly. The rear end of the electrode assembly is connected to the handle assembly. Each component is discussed in detail below.
[0038] Please combine Figure 2 , 3 As shown, the electrode assembly includes a first electrode 110 , a second electrode 120 and an insulating head 130 , and the second electrode 120 is connected to the front end of the first electrode 110 through the insulating head 130 .
[0039] The first electrode 110 is a tubular structure. For example, the first electrode 110 may be a round tube, a square tube, an elliptical tube, etc., and the interior thereof is hollow.
[0040] The first electrode 110 may be made of a metal material, and the details may refer to the prior art. The outer side of the first electrode 110 is covered with an insulating layer 140 , and the front end of the first electrode 110 is exposed.
[0041] The front end of the first electrode 110 can be straightened or bent. In this embodiment, the front end of the first electrode 110 is bent sideways, and the bending angle of the first electrode 110 is ∠A, wherein 0°<∠A≤70°, and preferably, ∠A is 30°. This configuration makes the working range of the second electrode 120 wider.
[0042] Please combine Figure 4 As shown, a plurality of water outlet holes 111 are provided at one side of the front end of the first electrode 110. The number of water outlet holes 111 is not limited, for example, two, three, four, etc., preferably three water outlet holes 111, and the size of the water outlet holes 111 can be 0.5 mm-1.2 mm, preferably 0.8 mm. Physiological saline can reach the lesion through the water outlet holes 111, so that the ablation area is always in the physiological saline, and the physiological saline can flush the lesion.
[0043] The first electrode 110 is provided with a suction tube 151 (please refer to Figure 1 As shown in the figure, the front end of the suction tube 151 has a suction hole, which is used to attract waste tissue, bubbles, waste water, etc. after ablation, so as to keep the lesion site clean and the field of vision clear.
[0044] The second electrode 120 is a sheet-like structure. The thickness of the second electrode 120 is not limited and may be 0.1-0.4 mm, preferably 0.3 mm.
[0045] The shape of the second electrode 120 is not limited. For example, the second electrode 120 is circular, square, polygonal, irregular, etc. In this embodiment, the following solutions can be adopted but are not limited to: Figure 5-Figure 7As shown, the second electrode 120 includes a central portion 123 and a plurality of antennae 124. The number and shape of the antennae 124 are not limited. The antennae 124 are spaced around the central portion 123. In this embodiment, the second electrode 120 is in the shape of a rich character. Moreover, the antennae 124 extend outward and can form relatively sharp parts. During the operation, many doctors can use the antennae 124 to precisely ablate the lesion site, and the ablation effect is better. In addition, with this shape of the second electrode 120, the service life is longer.
[0046] In addition, the second electrode 120 may further include two filament corners 125. The two filament corners 125 are located at both ends of the central portion 123. The filament corners 125 can pass through the insulating head 130 and are used for electrically connecting with an external ablation host.
[0047] An aspiration through-hole 121 is provided in the central portion 123 of the second electrode 120. The aspiration through-hole 121 communicates with the aspiration hole of the first electrode 110. The aspiration through-hole 121 can be circular as a whole, that is, the outermost side includes multiple arcs. The diameter of the aspiration through-hole 121 is not limited and can be 0.3 - 2.0 mm, preferably 1.2 mm. The size of the aspiration through-hole 121 is smaller than that of the aspiration hole. For example, the diameter of the aspiration through-hole 121 is smaller than the diameter of the aspiration hole, or the width of the aspiration through-hole 121 is smaller than the width of the aspiration hole. With such a setting, more and larger waste tissues can be aspirated. And since it is a through-hole, there will be no situation of dispersing the aspiration force, nor will there be a situation of blocking the aspiration force, and the effect can be fully exerted. In addition, since the aspiration through-hole 121 is smaller than the aspiration hole, the aspiration force can be increased to ensure that the waste tissues that can enter the aspiration through-hole 121 can smoothly pass through the aspiration hole.
[0048] There are a number of sharp corners in the aspiration through-hole 121. The sharp corners can be acute angles, right angles, obtuse angles, etc. Specifically, the sharp corners can adopt but are not limited to the following solutions: A number of protruding portions 122 are provided in the aspiration through-hole 121. The number of the protruding portions 122 is not limited. The protruding portions 122 extend towards the inside of the aspiration through-hole 121, and the protruding portions 122 form sharp corners. The sharp corners can cause strong electric discharge around the aspiration through-hole 121, cutting the lesion tissue into finer pieces, so that the waste tissue can more easily pass through the aspiration through-hole 121.
[0049] The shape inside the aspiration through-hole 121 is not limited, that is, the shape of the protruding portions 122 is not limited. For example, the protruding portions 122 can be triangular, rectangular, polygonal, etc., so that the aspiration through-hole 121 presents a star shape, a cross shape, a polygonal shape, etc.
[0050] The insulating head 130 is made of an insulating material, such as insulating ceramics, etc. The style of the insulating head 130 is not limited. For example, in this embodiment, please refer to Figure 8As shown, the insulating head 130 presents a columnar structure, which may be cylindrical, elliptical, prism-shaped, etc. A portion of the insulating head 130 may be inserted into the first electrode 110 and another portion may be exposed. The insulating head 130 is provided with a central hole 131, which is a through hole. The attraction through hole 121 and the attraction hole may be connected through the central hole 131, and the attraction hole may also be penetrated in the central hole 131 and directly connected with the attraction through hole 121. The central hole 131 may be a round hole or a square hole, and the diameter or width of the central hole 131 is not limited, and may be 0.4 mm-2.2 mm, preferably 1.4 mm, and the size of the attraction through hole 121 is smaller than the size of the central hole 131. A plurality of edge holes 132 are arranged around the center hole 131. The number of the edge holes 132 is not limited and can be 2-5, preferably 2. The edge holes 132 can be round holes or square holes. The diameter or width of the edge holes 132 is not limited and can be 0.2mm-0.8mm, preferably 0.6mm. The edge holes 132 can be used to penetrate the filament corners 125 of the second electrode 120.
[0051] The structure of the handle assembly can refer to the existing technology. Figure 1 As shown, the handle assembly includes a handle 150, a suction tube 151 and a dripping tube 152, wherein the rear end of the first electrode 110 of the electrode assembly is connected to the handle 150, the suction tube 151 is connected to the suction hole, and the dripping tube 152 is connected to the water outlet hole 111. The suction tube 151 is used to suck waste tissue, bubbles or waste water, etc., and the dripping tube 152 is used to transport physiological saline.
[0052] Of course, the handle assembly may also include a plug, which is used to connect to the radio frequency host.
[0053] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. An ablation electrode for ear, nose and throat, characterized in that: It includes a first electrode, a second electrode and an insulating head. The first electrode is tubular and has an insulating layer wrapped around its outer side. The front end of the first electrode is exposed. The second electrode is connected to the front end of the first electrode through the insulating head. The second electrode is in a sheet structure and has a suction through-hole provided in its central part. The suction through-hole communicates with the suction hole of the first electrode, and there are several sharp corners in the suction through-hole.
2. The ablation electrode for ear, nose and throat according to claim 1, characterized in that: There are several protruding parts extending inwardly provided in the suction through-hole, and the protruding parts form sharp corners.
3. The ablation electrode for ear, nose and throat according to claim 1, characterized in that: The second electrode includes a central part and several tentacles, and the tentacles are distributed at intervals around the central part.
4. The ablation electrode for ear, nose and throat according to claim 3, characterized in that: The second electrode is in a shape of a Chinese character 'feng'.
5. The ablation electrode for ear, nose and throat according to claim 1, characterized in that: The size of the suction through-hole is smaller than the size of the suction hole.
6. The ablation electrode for ear, nose and throat according to claim 1, characterized in that: The front end of the first electrode is bent.
7. The ablation electrode for ear, nose and throat according to claim 6, characterized in that: The bending angle of the first electrode is ∠A, where ∠A is 30°.
8. The ablation electrode for ear, nose and throat according to claim 1, characterized in that: The insulating head is columnar and is provided with a central hole and several edge holes. The central hole and the suction hole communicate through the suction through-hole.
9. The ablation electrode for ear, nose and throat according to claim 1, characterized in that: There are several water outlet holes provided on one side of the front end of the first electrode.
10. The ablation electrode for ear, nose and throat according to claim 9, characterized in that: It further includes a handle, a suction tube and a drip tube. The rear end of the first electrode is connected to the handle. The suction tube communicates with the suction hole, and the drip tube communicates with the water outlet holes.