CN221534004U - Electrode assembly for ablation of postnasal nerve - Google Patents
Electrode assembly for ablation of postnasal nerve Download PDFInfo
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- CN221534004U CN221534004U CN202323427341.0U CN202323427341U CN221534004U CN 221534004 U CN221534004 U CN 221534004U CN 202323427341 U CN202323427341 U CN 202323427341U CN 221534004 U CN221534004 U CN 221534004U
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Abstract
The utility model provides an electrode assembly for the ablation of a postnasal nerve, which comprises a supporting body, a temperature sensor and a plurality of electrode bodies, wherein the supporting body is provided with a cavity with an opening at the upper end, the temperature sensor and the electrode bodies are arranged in the cavity, the electrode bodies are distributed at two sides in the cavity at equal intervals to form two opposite rows, and the polarities of any two adjacent electrode bodies are opposite; the two electrode bodies close to the mounting end of the support body are configured to be connected with a power supply respectively, a plurality of electrode bodies with the same polarity are connected in series, a plurality of electrode holes and a sensing hole are formed in two circuit electrode bases with opposite polarities, the electrode bases and the support body are closed oppositely, the plurality of electrode bodies penetrate through the plurality of electrode holes and are partially exposed out of the electrode bases to form a plurality of working end parts, and the temperature sensor penetrates through the sensing hole and is partially exposed out of the electrode bases to form a temperature detection end part. After the technical scheme of the utility model is adopted, a loop formed by the electrode assembly and the target tissue can provide a better ablation effect for nerves.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an electrode assembly for ablation of a postnasal nerve.
Background
Traditional treatments for chronic rhinitis include the use of topical intranasal steroids, antihistamines and anticholinergic nasal sprays, etc. The symptoms difficult to treat by drug treatment need to be treated by surgery, and the modes of surgery mainly comprise two types: inferior turbinate angioplasty, nasal septum orthotics, and post-nasal nerve block surgery, which aim to improve nasal ventilation function, and to reduce nasal mucosa hyperreactivity.
In nerve blocking operation, the only parasympathetic nerve fibers secreted by the lacrimal gland can be cut off during operation, so that the postoperative eye stem symptoms are obvious, the pterygoid canal position is hidden, the operation difficulty is high, the complications are more, and the long-term curative effect is not definite. Clinical studies have found that microvascular components substantially maintain preoperative levels after post-nasal nerve block, but glands in nasal mucosa shrink substantially, and inflammatory response cells such as neutrophils and lymphocytes bleed less during allergic reactions. In addition, since the postnasal nerve does not contain autonomic nerve fibers that innervate lacrimal glands, adverse reactions such as tear reduction and dry eye caused by pterygoid nerve cutting after the postnasal nerve blockage do not occur, and the complications of reduction of the main clinical symptoms of allergic rhinitis can be permanently alleviated. However, the operation still has the problems of large operation wound, long recovery time of patients, more bleeding in the operation, great operation difficulty, difficult mastery of clinicians and the like.
Disclosure of utility model
In order to overcome the technical drawbacks described above, an object of the present utility model is to provide an electrode assembly for use in the ablation of the postnasal nerve.
The utility model discloses an electrode assembly for the ablation of a postnasal nerve, which comprises a support body, an electrode seat, a plurality of electrode bodies and a temperature sensor, wherein the electrode seat is arranged on the support body;
the support body is provided with a cavity with an opening at the upper end, the temperature sensor and the electrode bodies are arranged in the cavity, the electrode bodies are distributed at equal intervals on two sides in the cavity to form two opposite rows, and the polarities of any two adjacent electrode bodies are opposite;
The two electrode bodies close to the mounting end of the support body are respectively connected with a power supply, and the plurality of electrode bodies with the same polarity are connected in series to form two circuits with opposite polarities;
the electrode seat is provided with a plurality of electrode holes and a sensing hole, the electrode seat and the supporting body are oppositely closed, the plurality of electrode bodies penetrate through the plurality of electrode holes and are partially exposed out of the electrode seat to form a plurality of working end parts, and the temperature sensor penetrates through the sensing hole and is partially exposed out of the electrode seat to form a temperature detection end part.
Preferably, the vertical length of the temperature detecting end portion is equal to the vertical lengths of the plurality of working end portions.
Preferably, the support body and the electrode holder are composed of a ceramic material.
Preferably, the plurality of working ends are inclined toward the side of the electrode holder.
Preferably, the plurality of working ends are in a chamfered trapezoid structure.
Preferably, a plurality of insulating limit posts are arranged in the cavity, and the plurality of limit posts penetrate through the plurality of electrode bodies to fix the plurality of electrode bodies in the cavity.
Preferably, the lower end of the electrode holder is provided with a protruding buckling piece, and the upper end of the support body is provided with a groove matched with the buckling piece, so that a sealing structure is formed when the electrode holder and the support body are closed oppositely.
Preferably, the outer surface of the electrode holder is a columnar surface.
Preferably, the edges of the support body and the electrode holder are arc-shaped.
Preferably, the mounting end of the support body is provided with a hollow connecting pipe, and the connecting pipe is communicated with the cavity.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
The polarities of any two adjacent electrode bodies are opposite, and the formed loop can provide better ablation effect. The nerve regulation circuit in the reaction process of allergic rhinitis is blocked by damaging the subnasal nerve, so that the sympathetic nerve fiber, the parasympathetic nerve fiber and a part of sensory nerve fiber in the passage in the nasal cavity are completely disabled, effective axon reflex cannot be established, the anaphylactic reaction which rapidly occurs after the allergic rhinitis is contacted is reduced, and the curative effect is obvious and definite. After the blocking of the subnasal nerve, the microvascular component basically maintains the preoperative level, but the glands in the nasal mucosa shrink greatly, so inflammatory response cells such as neutrophils and lymphocytes have reduced exudation in the course of allergic reaction. In addition, since the postnasal nerve does not contain autonomic nerve fibers that innervate lacrimal glands, adverse reactions such as tear reduction and dry eye caused by surgery do not occur after the postnasal nerve is blocked.
Drawings
Fig. 1 is a schematic view of an electrode assembly according to the present utility model;
fig. 2 is a perspective assembly view of an electrode assembly according to the present utility model;
Fig. 3 is a schematic diagram showing the cooperation relationship between an electrode assembly and an electrode rod and a handle according to the present utility model.
Reference numerals: 1-electrode assembly, 2-electrode pole, 3-operating button, 4-handle, 5-cable conductor, 6-power interface, 11-electrode holder, 12-temperature sensor, 13-electrode body with first polarity, 14-electrode body with second polarity, 15-supporter, 16-fastener.
Detailed Description
Advantages of the utility model are further illustrated in the following description, taken in conjunction with the accompanying drawings and detailed description.
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" depending on the context.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present utility model, and are not of specific significance per se. Thus, "module" and "component" may be used in combination.
As shown in fig. 1 to 2, the utility model discloses an electrode assembly 1 for the ablation of the subnasal nerve, which comprises a support body 15, an electrode seat 11, a plurality of electrode bodies and a temperature sensor 12.
The support body 15 has a cavity with an open upper end, the temperature sensor 12 and the electrode bodies are disposed in the cavity, and the electrode bodies are distributed at equal intervals on two sides in the cavity to form two opposite columns, wherein the polarities of any two adjacent electrode bodies are opposite.
The two electrode bodies near the mounting end of the support body 15 are configured to be connected to a power source respectively, and the plurality of electrode bodies having the same polarity are connected in series to form two lines having opposite polarities.
The electrode holder 11 is provided with a plurality of electrode holes and a sensing hole, the electrode holder 11 and the supporting body 15 are closed in opposite directions, so that the plurality of electrode bodies pass through the plurality of electrode holes and partially expose the electrode holder to form a plurality of working ends, and the temperature sensor 12 passes through the sensing hole and partially exposes the electrode holder to form a temperature detection end.
When the electrode assembly is used, a plurality of working ends exposed out of the electrode seat 11 are simultaneously contacted with target tissues, so that a loop is formed between a plurality of electrode bodies and the target tissues. On the basis, the radio frequency current is supplied to the plurality of electrode bodies, the radio frequency current passes through the tissue to generate an electric field which continuously changes, and the electric field generates acting force on electrolyte ions in the tissue to enable the electrolyte ions to move back and forth at a high speed. The ion flow rubs and impacts in the tissue to generate magnetic field/heat, and the magnetic field/heat effect is shown in the tissue, so that the temperature of the target tissue is raised, the nerve is denatured, the biological activity is reduced, and the ablation effect is achieved.
Specifically, as in fig. 1, the electrode body labeled 13 has a first polarity, the electrode body labeled 14 has a second polarity, the first polarity is opposite to the second polarity, a power source is connected to the two electrode bodies closest to the mounting end of the support body 15 to supply radio frequency current, and the plurality of electrode bodies labeled 13 are connected in series and the plurality of electrode bodies labeled 14 are connected in series. After the arrangement, the polarities of any two adjacent electrode bodies in the cavity are opposite, and a plurality of electrode bodies with the same polarity are connected in series to form two circuits with opposite polarities and distributed in a crossing way. After the arrangement, an electric field can be formed between any two adjacent electrode bodies, so that the ablation effect is better.
Further, the temperature sensor 12 passes through the sensing hole and partially exposes the electrode holder 11 to form a temperature detection end portion, which continuously monitors the temperature of the target tissue during the ablation operation. As an alternative embodiment, the temperature sensor 12 may collect the temperature of the target tissue in contact with it, or the temperature of the contact portion between the electrode body and the temperature sensor, or the temperature provided by the environment in which the temperature sensor 12 is located.
In an alternative embodiment, the vertical length of the temperature sensing tip is equal to the vertical length of the plurality of working tips.
Specifically, in the present embodiment, the temperature sensor 12 collects the temperature of the target tissue with which it is in contact. The vertical length of the temperature detecting end portion is set to be equal to the vertical lengths of the plurality of working end portions so that, in use, the electrode assembly of the present utility model can contact the target tissue simultaneously with the plurality of working end portions, causing the temperature sensor 12 to collect the temperature of the contacted target tissue.
In an alternative embodiment, the support body and the electrode holder are composed of a ceramic material.
It can be appreciated that, since the ceramic has good insulation and low thermal conductivity, the support body 15 and the electrode base 11 are made of ceramic materials, so that a good insulation effect can be obtained, and abnormal ablation area or scald of other tissues in the nasal cavity can be prevented.
In an alternative embodiment, the plurality of working ends are inclined toward the side of the electrode holder 11.
It can be understood that the plurality of electrode bodies are distributed at equal intervals on two sides in the cavity to form two opposite rows, and the working end part of any electrode body is inclined towards the side edge of the electrode seat 11, which is close to the row where the electrode body is located, so that the working end parts of the two rows of electrode bodies are inclined relatively, that is, the working end parts of the two rows of electrode bodies are in a horn shape, so that when the electrode assembly is used, the side surfaces of the plurality of working end parts are contacted with target tissues as much as possible, the contact area between the electrode body and the target tissues is increased, and a better ablation effect is achieved.
In an alternative embodiment, the plurality of working ends are in a chamfered trapezoidal configuration.
It will be appreciated that the plurality of working ends can be brought into contact with the target tissue without undue sharpness, enhancing the comfort of the ablation procedure.
In an alternative embodiment, a plurality of insulating limit posts are arranged in the cavity, and the plurality of limit posts penetrate through the plurality of electrode bodies to fix the plurality of electrode bodies in the cavity.
It can be appreciated that through setting up spacing post between a plurality of electrode bodies, can avoid the risk that a plurality of electrode bodies shifted in the cavity, can play insulating effect simultaneously, avoid producing the electricity between the adjacent electrode body to guarantee the integrality of two opposite circuit in the electrode assembly.
In an alternative embodiment, the lower end of the electrode holder 11 is provided with a protruding fastening piece 16, and the upper end of the supporting body 15 is provided with a groove matched with the fastening piece 16, so that a sealing structure is formed when the electrode holder 11 and the supporting body 15 are closed oppositely.
In an alternative embodiment, the outer surface of the electrode holder 11 is a cylindrical surface.
It will be appreciated that the outer surface of the electrode holder is curved in a cylindrical shape, so that the plurality of working ends exposed to the electrode holder better conform to non-planar target tissue.
In an alternative embodiment, the edges of the support body 15 and the electrode holder 11 are arc-shaped.
It will be appreciated that, in use of the electrode assembly, the edges of the support body 15 and the electrode holder 11 may contact tissue other than the target tissue, and the edges of the support body 15 and the electrode holder 11 are arranged in an arc shape, so that the contact is not excessively sharp, and the comfort of the ablation process is improved.
In an alternative embodiment, the mounting end of the support body 15 is provided with a hollow connecting tube, which is in communication with the cavity.
Specifically, as shown in fig. 3, taking the electrode assembly of the present utility model as a part of an ablation device as an example, the ablation device is mainly composed of an electrode assembly 1, an electrode rod 2, and a handle 4. The structure and connection manner of the handle 4 and the electrode rod 2 can refer to the prior art, the electrode assembly 1 is installed at the first end of the electrode rod 2, and the second end of the electrode rod 2 is connected with the front end of the handle 4. The rear end of the handle 4 is connected to a control host as a power source through a connection cable 5 and a power source interface 6. The electrode assembly 1 is used for contacting with target tissue, and after radio frequency current is supplied to the electrode assembly 1, the electrode assembly 1 forms an electric field for ablation.
Specifically, the handle 4 includes a handle upper cover and a handle lower cover, the handle upper cover and the handle lower cover are oppositely closed, so that a containing cavity is formed inside the handle 4, the supporting body 15 is connected to the first end of the electrode rod 2, and the second end portion of the electrode rod 2 is fixed in the containing cavity. The handle 4 is provided with a control switch 3, and comprises an operation key arranged on the surface of the handle and a PCB unit arranged in the accommodating cavity and used for being connected with a control host, wherein the PCB unit is electrically connected with the operation key, the electrode bodies are electrically connected with the PCB unit, and the temperature sensor 12 is in signal connection with the PCB unit. When the hollow connecting pipe is arranged at the mounting end of the supporting body 15, the supporting body 15 is connected with the first end of the electrode rod 2 through the connecting pipe, and the electrode rod 2 is hollow, so that the cavity, the connecting pipe, the electrode rod 2 and the accommodating cavity are mutually communicated. Two electrode bodies near the installation end of the support body 15 are respectively connected with a first electrode wiring and a second electrode wiring, the first electrode wiring and the second electrode wiring sequentially penetrate through the cavity, the connecting pipe, the electrode rod 2 and the accommodating cavity to be connected to the PCB unit, the control host conducts radio frequency current to the PCB unit, when the PCB unit is conducted by the operation button 3, the radio frequency current is conducted to the electrode bodies through the first electrode wiring and the second electrode wiring, a loop is formed between the working end parts and target tissues, and the radio frequency current can pass through the target tissues to ablate the target tissues.
It should be noted that the embodiments of the present utility model are preferred and not limited in any way, and any person skilled in the art may make use of the above-disclosed technical content to change or modify the same into equivalent effective embodiments without departing from the technical scope of the present utility model, and any modification or equivalent change and modification of the above-described embodiments according to the technical substance of the present utility model still falls within the scope of the technical scope of the present utility model.
Claims (10)
1. An electrode assembly for the ablation of the subnasal nerve is characterized by comprising a supporting body, an electrode seat, a plurality of electrode bodies and a temperature sensor;
the support body is provided with a cavity with an opening at the upper end, the temperature sensor and the electrode bodies are arranged in the cavity, the electrode bodies are distributed at equal intervals on two sides in the cavity to form two opposite rows, and the polarities of any two adjacent electrode bodies are opposite;
The two electrode bodies close to the mounting end of the support body are respectively connected with a power supply, and the plurality of electrode bodies with the same polarity are connected in series to form two circuits with opposite polarities;
the electrode seat is provided with a plurality of electrode holes and a sensing hole, the electrode seat and the supporting body are oppositely closed, the plurality of electrode bodies penetrate through the plurality of electrode holes and are partially exposed out of the electrode seat to form a plurality of working end parts, and the temperature sensor penetrates through the sensing hole and is partially exposed out of the electrode seat to form a temperature detection end part.
2. The electrode assembly of claim 1, wherein the electrode assembly comprises,
The vertical length of the temperature detection end portion is equal to the vertical lengths of the plurality of working end portions.
3. The electrode assembly of claim 1, wherein the electrode assembly comprises,
The support body and the electrode holder are made of ceramic materials.
4. The electrode assembly of claim 1, wherein the electrode assembly comprises,
The plurality of working end portions are inclined toward the side edge of the electrode holder.
5. The electrode assembly of claim 1, wherein the electrode assembly comprises,
The working ends are of a chamfered trapezoid structure.
6. The electrode assembly of claim 1, wherein the electrode assembly comprises,
The cavity is internally provided with a plurality of insulating limit posts, and the plurality of limit posts penetrate through the plurality of electrode bodies to fix the plurality of electrode bodies in the cavity.
7. The electrode assembly of claim 1, wherein the electrode assembly comprises,
The electrode holder lower extreme is provided with convex buckle spare, the supporter upper end be provided with the recess of buckle spare mutually supporting makes the electrode holder with the supporter is when opposite closure forms seal structure.
8. The electrode assembly of claim 1, wherein the electrode assembly comprises,
The outer surface of the electrode seat is a columnar surface.
9. The electrode assembly of claim 1, wherein the electrode assembly comprises,
The edges of the support body and the electrode seat are arc-shaped.
10. The electrode assembly of claim 1, wherein the electrode assembly comprises,
The installation end of the support body is provided with a hollow connecting pipe, and the connecting pipe is communicated with the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323427341.0U CN221534004U (en) | 2023-12-15 | 2023-12-15 | Electrode assembly for ablation of postnasal nerve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323427341.0U CN221534004U (en) | 2023-12-15 | 2023-12-15 | Electrode assembly for ablation of postnasal nerve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221534004U true CN221534004U (en) | 2024-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323427341.0U Active CN221534004U (en) | 2023-12-15 | 2023-12-15 | Electrode assembly for ablation of postnasal nerve |
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| Country | Link |
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| CN (1) | CN221534004U (en) |
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- 2023-12-15 CN CN202323427341.0U patent/CN221534004U/en active Active
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