Disclosure of Invention
In view of the above, the invention aims to provide an electrode front end assembly and a radio frequency ablation electrode, which solve the technical problems that the whole electrode plane has poor adhesion with tissues and the area and the narrower position on the back of the electrode cannot be ablated. The invention can ablate the side part and the front part, and can ablate the back part, to ablate the narrow part.
The technical scheme of the invention is as follows:
the invention provides an electrode front-end assembly, which comprises a support body, an electrode seat, a side electrode assembly and a front-end electrode assembly, wherein the electrode seat is embedded in the support body, the side electrode assemblies are distributed on the electrode seat, and the front-end electrode assembly extends from the electrode seat to the back side of the support body through the front end of the support body so that the side electrode assembly and the front-end electrode assembly form a continuous J-shaped ablation area together.
Alternatively, the side electrode assembly and the front electrode assembly are independently controlled.
Alternatively, the side electrode assembly and the front electrode assembly are controlled in unison.
Alternatively, the side electrode assembly includes a plurality of positive electrode tips and a plurality of negative electrode tips, and the positive electrode tips and the negative electrode tips have opposite polarities and are staggered.
Alternatively, the plurality of positive electrode tabs and the plurality of negative electrode tabs are divided into two electrode rows.
As an alternative, the positive electrode heads are integrally formed into a positive electrode piece, the negative electrode heads are integrally formed into a negative electrode piece, and the positive electrode piece and the negative electrode piece are insulated and integrally injection molded with the electrode base.
Alternatively, the exposed portions of the positive electrode tab and the negative electrode tab are inclined.
Alternatively, the front-end electrode assembly includes a positive electrode body and a negative electrode body.
Alternatively, the positive electrode body is a positive electrode wire, and the negative electrode body is a negative electrode wire.
Alternatively, the positive electrode body is a positive electrode plate, and the negative electrode body is a negative electrode plate.
Alternatively, the plurality of positive electrode tabs and the plurality of negative electrode tabs form two electrode rows, the positive electrode body is aligned with a first one of the electrode rows, and the negative electrode body is aligned with a second one of the electrode rows.
Alternatively, the positive electrode body is adjacent to the adjacent negative electrode tip, and the negative electrode body is adjacent to the adjacent positive electrode tip.
Alternatively, the positive electrode body is adjacent to the adjacent negative electrode tip, and the negative electrode body is adjacent to the adjacent positive electrode tip.
Alternatively, the edge distance between the insertion end of the positive electrode body and the corresponding negative electrode head or between the insertion end of the negative electrode body and the corresponding positive electrode head is a first edge distance, the edge distance between the positive electrode head and the negative electrode head in the electrode row is a second edge distance, and the first edge distance is equal to the second edge distance.
Alternatively, the support body includes a main body and a cap, the front end of the main body is opened and closed by the cap, and both ends of the positive electrode body and the negative electrode body extend into the cap.
Alternatively, the support body has a connection portion, an electrode plane is formed at an outermost end of the side electrode assembly, and the electrode plane and a center line of the connection portion form an included angle, and the included angle of the electrode plane and the center line of the connection portion is an acute angle.
Alternatively, the electrode front-end assembly further comprises a temperature control assembly, and the temperature control assembly is embedded in the electrode base and exposed between the side electrode assemblies.
Alternatively, the thickness and/or width of the support body gradually decreases from back to front.
The invention also provides a radiofrequency ablation electrode, which comprises a connecting component, a handle component, an electrode rod component and the electrode front end component which are connected in sequence.
Alternatively, the electrode rod assembly is pre-bent.
Alternatively, the electrode rod assembly includes a reinforcing section and a moldable section, the bendable section having an adjustable bending angle.
The beneficial effects of the invention are as follows:
According to the electrode front end assembly and the radiofrequency ablation electrode, the front end electrode assembly is additionally arranged at the front end, and extends to the back side of the support body from the electrode seat through the front end of the support body, so that a continuous J-shaped ablation area is formed when the electrode front end assembly and the lateral electrode assembly are matched for working. Because the front electrode assembly extends from the electrode seat to the back side of the support body through the front end of the support body, the electrode not only increases the part of the side surface which is not covered by the electrode, but also increases the ablation of the front electrode, prolongs the length of the electrode which can act (the nose channel and the electrode are very small, and the small increase of the electrode acting length can also improve the fitting degree and the ablation effect), and also increases the electrode acting of the back side. Therefore, the invention can ablate the side part and the front part, and can ablate part of the back side, thereby realizing the omnibearing ablation of the narrow position, and solving the technical problems that the whole electrode plane has poor adhesion with the tissue and the area on the back side of the electrode and the narrower position cannot be ablated.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Example 1:
Referring to fig. 1-5, a first embodiment of the present invention provides an electrode front-end assembly 10, wherein the electrode front-end assembly 10 is used as a component of a radiofrequency ablation electrode (refer to a second embodiment), and is mainly used for ablation hemostasis in rhinitis surgery.
It should be noted that, in this embodiment, "front" and "rear" are determined by the positional relationship between the head end and the tail end of the electrode front end assembly 10, where the head end is behind the tail end, and the tail end of the electrode front end assembly 10 is used for connecting with the electrode rod assembly of the rf ablation electrode.
Referring to fig. 6-7, the electrode front end assembly 10 mainly comprises a support 11, an electrode holder 12, a side electrode assembly 13 and a front end electrode assembly 14, wherein the side electrode assembly 13 and the front end electrode assembly 14 can be contacted with human tissues such as turbinate mucosa to output radio frequency energy, and the side electrode assembly 13 and the front end electrode assembly 14 can form a current loop independently or cooperatively (referring to fig. 9), so as to ablate the turbinate tissue and the subnasal nerve, and each component of the electrode front end assembly 10 is discussed in detail below.
The shape and structure of the supporting body 11 are not limited, and reference may be made to the prior art, and in this embodiment, the supporting body 11 has a receiving chamber, one side of which is opened.
The material of the support 11 is not limited, and in general, the support 11 needs to be made of an insulating material, such as ceramic, ABS, and the like.
The size and dimension of the support body 11 may be set as required, and in this embodiment, the width and/or length of the support body 11 may be gradually reduced, that is, the width of the support body 11 is gradually reduced, or the length of the support body 11 is gradually reduced, or both the width and the length of the support body 11 are simultaneously reduced, etc. This decrease may be linear or non-linear, as long as it is ensured that the front half of the support 11 has a smaller cross-sectional area than the rear half of the support 11.
In other embodiments, the supporting body 11 may be a solid structure, but a structure such as a through hole or a slot may be provided for wiring, and the front and rear cross-sectional areas of the supporting body 11 are equal or substantially equal, or the front and rear sizes are also allowable.
The support 11 may be manufactured by injection molding, sintering, turning, or other manufacturing methods. The support body 11 may be an integral structure, or may be a structure as shown in fig. 6 and 7, in which the support body 11 includes a main body 110 and a cap 111, one side and a front end of the main body 110 are opened, the front end opening of the main body 110 is closed by the cap 111, and a connection manner between the main body 110 and the cap 111 is not limited, for example, adhesion, clamping, buckling, and the like.
The electrode holder 12 is embedded in the supporting body 11, a part of the electrode holder 12 extends into the accommodating cavity of the supporting body 11, and one side of the electrode holder is exposed, and the exposed surface of the electrode holder 12 can be flush with the side surface of the supporting body 11, can also protrude out of the side surface of the supporting body 11, or is lower than the side surface of the supporting body 11. The structure of the electrode holder 12 may be set as required, for example, rectangular block, stepped, etc., and the specific structure may refer to the prior art. In this embodiment, the side opening of the support 11 may be provided with a step, and the electrode holder 12 may be embedded in the step, although it is also possible that the support 11 is not provided with a step.
The electrode holder 12 is made of an insulating material, such as ceramic, ABS, etc., and the connection manner between the electrode holder 12 and the support 11 is not limited, such as adhesion, clamping, buckling, etc.
The manufacturing method of the electrode holder 12 is not limited, and for example, press molding, turning molding, etc., and in this embodiment, the electrode holder 12 is manufactured by injection molding.
The side electrode assemblies 13 are distributed on the electrode holder 12, and a portion of the side electrode assemblies 13 is buried in the electrode holder 12, and another portion of the side electrode assemblies 13 is exposed from one side of the electrode holder 12. Of course, it is also possible that the side electrodes are exposed from both sides of the electrode holder 12.
The shape of the side electrode assembly 13 is not limited, and referring to the prior art, the side electrode assembly 13 mainly comprises a plurality of positive electrode tabs and a plurality of negative electrode tabs, and the positive electrode tabs and the negative electrode tabs have opposite polarities and are staggered. The positive electrode tip and the negative electrode tip can be wire electrodes, sheet electrodes and the like, and in the embodiment, the positive electrode tip and the negative electrode tip are sheet electrodes, and the width and the thickness of the sheet electrodes can be set according to requirements. The heights of the exposed parts of the positive electrode tip and the negative electrode tip can be set according to the needs, and are generally 0-3mm, preferably 0.3mm, 0.4mm, 0.5mm, 0.6mm and the like. The positive electrode head and the negative electrode head are connected with the positive electrode and the negative electrode of the radio frequency host through connecting wires and the like.
The number of the positive electrode tabs and the negative electrode tabs is not limited, for example, two, three, four, etc., and in general, the number of the positive electrode tabs and the negative electrode tabs is equal, but it is also possible that the number of the positive electrode tabs and the negative electrode tabs is not equal. In this embodiment, the number of the positive electrode tabs and the negative electrode tabs is four, the four positive electrode tabs and the four negative electrode tabs are divided into two electrode rows, the two electrode rows are respectively defined as a first electrode row and a second electrode row, the two electrode rows are oppositely arranged, and the first electrode row and the second electrode row may be parallel or not parallel to each other, for example, the first electrode row and the second electrode row are distributed in a splayed or inverted splayed shape.
Each electrode row has four electrode heads in total of two positive electrode heads and two negative electrode heads, and the positive electrode heads and the negative electrode heads in each electrode row are alternately distributed at intervals along the front-rear direction. Preferably, the positive electrode tip is opposite to the negative electrode tip in the first electrode row and the second electrode row, the forefront end of the first electrode row is the negative electrode tip, the forefront end of the second electrode row is the positive electrode tip, or the forefront end of the first electrode row is the positive electrode tip, and the forefront end of the second electrode row is the negative electrode tip.
The spacing between the two electrode rows is not limited, and the spacing between the positive electrode tab and the negative electrode tab in the same electrode row is not limited. For example, the margin between two electrode rows is 0.6mm-2.2mm, and the margin between the positive electrode tab and the negative electrode tab between the same row of electrodes is 0.4mm-1.5mm.
In other embodiments, the arrangement of the positive electrode tip and the negative electrode tip may also adopt other schemes, for example, a plurality of positive electrode tips and a plurality of negative electrode tips are circularly distributed and divided into three or four electrode rows, or the positive electrode tip and the positive electrode tip are opposite and the negative electrode tip are opposite or are relatively misplaced in the two electrode rows.
One ends of the positive electrode tip and the negative electrode tip are exposed from one side of the electrode base 12 and can be used as working parts, wherein the working parts can be perpendicular to one side of the electrode base 12, or the scheme can be adopted that the exposed parts of the positive electrode tip and the negative electrode tip are inclined as shown in fig. 4, the inclination direction is not limited, preferably, the working parts of the two electrode rows are gradually inclined outwards, namely, the working parts of the two electrode rows are in a horn shape from bottom to top, the degree of an included angle A between the working parts of the two electrode rows can be 0-70 degrees, so that the side surfaces of the positive electrode tip and the negative electrode tip are contacted with tissues as much as possible, the contact surface of an electrode and the tissues is enlarged, and a better ablation effect is achieved.
The plurality of positive electrode tabs and the plurality of negative electrode tabs may be independently provided, for example, four positive electrode tabs are independently provided, and four negative electrode tabs are independently provided. Because the nasal cavity space is smaller, the overall radial cross-sectional dimension of the electrode front end assembly 10 is smaller, generally within 5mm, i.e. the front end of the electrode front end assembly 10 can be covered by a circle with the diameter smaller than or equal to 5mm, if the electrode front end assembly is independently arranged, electrode heads with the same polarity of other structures are necessarily required to be welded or electrically connected, and because the sizes of all the components are small, the electrode front end assembly is difficult to operate in actual production and the welding reliability is poor. Therefore, it is also possible to improve the positive electrode member 130 by integrally forming the positive electrode tabs by press forming or casting, and the negative electrode member 131 by integrally forming the negative electrode tabs by press forming or casting. The positive electrode member 130 and the negative electrode member 131 are integrally injection-molded with the electrode holder 12, and both the positive electrode member 130 and the negative electrode member 131 are insulated.
Specifically, taking the example that four positive electrode tips are integrally formed into the positive electrode member 130 by stamping, the positive electrode member 130 comprises a connecting sheet and four positive electrode tips, the four positive electrode tips are parallel or basically parallel, the positive electrode tips and the connecting sheet are mutually perpendicular, and can conduct electricity, and when in wiring, only the wire is electrically connected with the connecting sheet or any positive electrode tip. In other embodiments, the connection piece may be replaced by other patterns, such as a mesh structure, a sheet structure, etc., and it is also possible that the positive electrode tab is not perpendicular to the connection piece.
Correspondingly, the negative electrode member 131 includes a connecting piece and four negative electrode tabs, which are electrically conductive with each other. The structure of the negative electrode member 131 may be similar to or different from that of the positive electrode member 130.
The positive electrode member 130 and the negative electrode member 131 are connected with the electrode holder 12 into a whole through injection molding, and the positive electrode member 130 and the negative electrode member 131 are insulated, that is, gaps exist between each position of the positive electrode member 130 and the negative electrode member 131 or are blocked by the electrode holder 12. By the arrangement, a plurality of positive electrode heads or a plurality of negative electrode heads are not required to be welded or electrically connected by other means, so that the precision and the production and installation efficiency can be effectively improved, and the cost is reduced.
In addition, the support 11 and the front electrode assembly 14, or the electrode holder 12 and the temperature control assembly 15, etc. may be integrally injection molded, so that the assembly time is further saved and the efficiency is improved, and it is needless to say that the support 11 and the front electrode assembly 14, or the electrode holder 12 and the temperature control assembly 15 may be separately manufactured and then mounted.
The side electrode assembly 13 is capable of ablating a lesion adjacent to the side of the electrode front end assembly 10, and the front electrode assembly 14 is capable of ablating a lesion adjacent to the front end of the electrode front end assembly 10. The front electrode assembly 14 extends from the front end of the electrode holder 12, through the front end of the support 11, and to the back side of the support 11.
The side electrode assemblies 13 and the front electrode assembly 14 cooperate to form a continuous J-shaped ablation zone 134. That is, one side, the front end, and a portion of the other side of the electrode front end assembly 10 are capable of hemostatic ablation of adjacent focal sites.
The definition of the "J-shaped ablation zone 134" referred to in this embodiment is as follows, the "J-shaped ablation zone 134" is a curved surface, the cross-section of which is substantially J-shaped. By way of example, in FIG. 3, the projection of the J-shaped ablation zone 134 onto the page is generally rectangular, and in FIG. 10, the projection of the J-shaped ablation zone 134 onto the page is generally J-shaped. In some embodiments, the "J-shaped ablation region 134" may also be several intersecting planes or a combination of planes and curved surfaces, e.g., in FIG. 10, the left side, the upper side, the right side of the J-shaped ablation region 134 are all planes, a smooth transition between two adjacent planes is possible, or the left side of the J-shaped ablation region 134 is a plane, the upper side and the right side are curved surfaces, etc. The shape of the "J-shaped ablation zone 134" is more optional and is not further illustrated herein.
The shape of the tip electrode assembly 14 is not limited, and may be a sheet electrode or a wire electrode, and the tip electrode assembly 14 and the support 11 may be provided independently or may be fixed by injection molding. In the present embodiment, the front-end electrode assembly 14 includes the positive electrode body 132 and the negative electrode body 133, and the positive electrode body 132 and the negative electrode body 133 may be wire-shaped, the positive electrode body 132 is a positive electrode wire, the negative electrode body 133 is a negative electrode wire, and the diameters of the positive electrode body 132 and the negative electrode body 133 are not limited, but are generally 0 to 2mm, preferably 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, and the like. The outermost height of the front electrode assembly 14 may be lower than the outermost height of the side electrode assembly 13, i.e., the diameters of the positive electrode body 132 and the negative electrode body 133 are smaller than the exposed portions of the positive electrode tab and the negative electrode tab, and the outermost height of the front electrode assembly 14 may be higher than or equal to the outermost height of the side electrode assembly 13.
The positive electrode body 132 and the negative electrode body 133 are arranged side by side with a certain distance therebetween, and the positive electrode body 132 and the negative electrode body 133 may be parallel or substantially parallel to each other or may not be parallel, for example, the positive electrode body 132 and the negative electrode body 133 are distributed in a splayed or inverted splayed shape. The positive electrode body 132 and the negative electrode body 133 each extend from the front end of the electrode holder 12, through the front end of the support 11, and to the back side of the support 11.
Both ends of the positive electrode body 132 and the negative electrode body 133 extend into the support body 11, and in this embodiment, both ends of the positive electrode body 132 and the negative electrode body 133 may extend into the cap 111, and both the positive electrode body 132 and the negative electrode body 133 extend along the outer side surface of the cap 111.
The positive electrode body 132 and the positive electrode member 130 may be provided independently, or may be integrally formed or welded, and the negative electrode body 133 and the negative electrode member 131 may be provided independently, or may be integrally formed or welded.
The positions of the front electrode assembly 14 and the side electrode assembly 13 may or may not be matched with each other. In this embodiment, the positive electrode body 132 may be aligned with the first electrode row and the negative electrode body 133 aligned with the second electrode row such that the width of the ablation zone is approximately equal throughout the electrode front assembly 10. Of course, in some embodiments, it is also possible that the positive electrode body 132 is not aligned with the first electrode row and/or that the negative electrode body 133 is not aligned with the second electrode row.
Preferably, as shown in fig. 8 and 9, the polarity of the positive electrode 132 is opposite to that of the negative electrode at the forefront of the first electrode row, and the polarity of the negative electrode 133 is opposite to that of the positive electrode at the forefront of the second electrode row. By the arrangement, the side electrode assembly 13 and the front electrode assembly 14 can form a continuous ablation area, and the ablation effect is better. In other embodiments, the positive electrode body 132 and the positive electrode head at the forefront end of the first electrode row have the same polarity, and the negative electrode body 133 and the negative electrode head at the forefront end of the second electrode row have the same polarity.
Alternatively, the margin between one insertion end of the positive electrode body 132 (i.e., the position where the positive electrode body 132 starts to enter the support body 11) and the corresponding electrode row, and between one insertion end of the negative electrode body 133 and the corresponding electrode row is 0.4mm to 1.5mm. Preferably, the margin between the insertion end of the positive electrode body 132 and the corresponding negative electrode tip or between the insertion end of the negative electrode body 133 and the corresponding positive electrode tip is a first margin, the margin between the positive electrode tip and the negative electrode tip in the same electrode row is a second margin, and the first margin and the second margin may be equal. By the arrangement, the whole ablation area is more uniform, and the ablation effect is better. Of course, it is also possible that the first margin and the second margin are not equal.
In other embodiments, the front electrode assembly 14 may also adopt, but is not limited to, a scheme in which the positive electrode body 132 is a positive electrode sheet, the negative electrode body 133 is a negative electrode sheet, the positive electrode sheet and the negative electrode sheet are arranged side by side with a certain distance therebetween, the positive electrode sheet and the negative electrode sheet all extend from the front end of the electrode holder 12 to the back side of the support 11 through the front end of the support 11, and the arrangement modes of the positive electrode sheet and the negative electrode sheet can refer to the arrangement modes of the positive electrode wire and the negative electrode wire. Or the front electrode assembly 14 includes three wires, the polarities of any two adjacent wires are opposite, and the pitches of any two adjacent wires are equal or substantially equal. Or the front electrode assembly 14 comprises two electrode wires, the polarities of the two electrode wires are opposite, one electrode wire is U-shaped, and the other electrode wire is inserted into the U-shaped electrode wire from the opening of the U-shaped electrode wire and does not contact with the U-shaped electrode wire. Or the electrode wire of the front electrode assembly 14 may be zigzag, spiral, wavy, etc.
The side electrode assemblies 13 and the front electrode assemblies 14 may be controlled in a unified manner or may be controlled independently.
If the side electrode assembly 13 and the front electrode assembly 14 are controlled in a unified manner, the connection and control manners of the two are not limited, for example, the positive electrode body 132 and the positive electrode member 130 are formed integrally or welded, the negative electrode body 133 and the negative electrode member 131 are formed integrally or welded, or the positive electrode body 132 and the positive electrode member 130 are independently provided, the negative electrode body 133 and the negative electrode member 131 are independently provided, the side electrode assembly 13 and the front electrode assembly 14 are controlled by two parallel circuits, and the two parallel circuits are controlled by the same switch.
If the side electrode assembly 13 and the front electrode assembly 14 are independently controlled, the positive electrode body 132 and the positive electrode member 130 are independently arranged, the negative electrode body 133 and the negative electrode member 131 are independently arranged, and the control manner of the side electrode assembly 13 and the front electrode assembly 14 is not limited, for example, the side electrode assembly 13 may be separately connected to the host output through a cable and provided with the switch S1, and the front electrode assembly 14 may be separately connected to the host output through a cable and provided with the switch S2. The side electrode assembly 13 and the front electrode assembly 14 can be individually controlled to operate when the switches S1, S2 are closed, respectively, and the side electrode assembly 13 and the front electrode assembly 14 can be simultaneously operated when the switches S1, S2 are simultaneously closed. Medical staff can control different switches according to the ablation demands of different parts in clinic. The switches S1 and S2 may be individually controlled by relays.
The support 11 has a connection portion 112, the connection portion 112 is used for connecting with an electrode rod assembly of a radio frequency ablation electrode, a center line of the connection portion 112 can also be regarded as a center line of a front end of the electrode rod assembly, an outermost end of the side electrode assembly 13 forms an electrode plane 135, a center line of the connection portion 112 is used as a reference line, the electrode plane 135 and the reference line can be parallel to each other or can be arranged at an included angle, in this embodiment, as shown in fig. 5, the electrode plane 135 and the reference line (in fig. 5, the reference line is shifted upwards by a distance) form an included angle B, the angle B is an acute angle, and the degree of angle B can be set according to needs, for example, 5 °, 10 °, 15 ° and the like, that is, in a direction from back to front, the electrode plane 135 is gradually inclined toward a back side of the support 11 (i.e., a back side of an exposed side of the electrode seat 12). This arrangement allows for better access to the target area by the electrode front end assembly 10.
In addition, the electrode front-end assembly 10 may further include a temperature control assembly 15, wherein the temperature control assembly 15 is embedded in the electrode holder 12, and a part of the temperature control assembly 15 is exposed, and the exposed part is located between two electrode rows of the side electrode assembly 13. The structure of the temperature control assembly 15 is not limited, and for example, the temperature control assembly 15 includes a temperature sensor for detecting temperature and a heating member for heating, etc., although the temperature control assembly 15 may be a mature product in the prior art.
The temperature control component 15 is mainly used for detecting and feeding back the temperature near the ablation part, then transmitting the temperature information to a matched temperature control radio frequency ablation system, namely a host machine, wherein the host machine can timely adjust, such as heating, according to the temperature information so as to control the temperature, and the numerical value of the temperature can be set according to the needs, such as 60 ℃ and 70 ℃, so that the mucous membrane damage is smaller, and the postoperative recovery is faster. The operation is performed by adopting a temperature control ablation mode, the operation is not needed, and the minimally invasive operation can achieve less or even no bleeding in the operation.
Of course, in some embodiments, it is also possible that the electrode front-end assembly 10 is not provided with a temperature control assembly 15.
The method for producing the electrode front-end assembly 10 according to the present embodiment is as follows:
respectively processing the positive electrode piece 130 and the negative electrode piece 131 in a stamping forming mode, wherein the positive electrode piece 130 is provided with four positive electrode heads, and the negative electrode piece 131 is provided with four negative electrode heads;
Arranging the positive electrode pieces 130 and the negative electrode pieces 131 in a specific manner so that four positive electrode tips and four negative electrode tips are divided into two electrode rows, each row is provided with two positive electrode tips and two negative electrode tips, the positive electrode tips and the negative electrode tips are alternately distributed, and in the back-to-front direction, the polarity of one row of electrodes is negative, positive, negative and positive in sequence, and the polarity of the other row of electrodes is positive, negative, positive and negative in sequence;
the positive electrode member 130 and the negative electrode member 131 are simultaneously integrated on the electrode holder 12 by means of injection molding, a part of the positive electrode tip and a part of the negative electrode tip are exposed, and the positive electrode member 130 and the negative electrode member 131 each have a welding end for connecting with a connecting wire, the connecting manner is not limited, for example, welding;
The temperature control assembly 15 is assembled in a hole reserved on the electrode seat 12, and of course, the temperature control assembly 15 and the electrode seat 12 can be integrally injection molded;
The front electrode assembly 14 and the side electrode assembly 13 are welded or independently arranged, specifically, the positive electrode body 132 and the negative electrode body 133 are aligned with two electrode rows respectively, preferably, the positive electrode body 132 is closest to the negative electrode head, the negative electrode body 133 is closest to the positive electrode head, and of course, in some embodiments, the positive electrode body 132 is closest to the positive electrode head, and the negative electrode body 133 is closest to the negative electrode head;
And welding the connecting wires with different polarities with the positive electrode tip and the negative electrode tip respectively, leading out the connecting wires from the rear end of the support body 11, and covering the support body 11.
The steps can be increased, decreased, modified, and the order adjusted according to the need, for example, the plurality of positive electrode tips and the plurality of negative electrode tips are all independently arranged, so that each positive electrode tip and each negative electrode tip are required to be fixed respectively, and then the electrode body is obtained by injection molding, or the positive electrode tip and the negative electrode tip are inserted into the through holes reserved in the electrode body, or if the temperature control assembly 15 is not provided, the corresponding steps are not required.
Example 2:
referring to fig. 11-14, a second embodiment of the present invention provides a radiofrequency ablation electrode 100, where the radiofrequency ablation electrode 100 can be used for ablation hemostasis in rhinitis surgery.
The radiofrequency ablation electrode 100 is mainly composed of a connecting assembly 40, a handle assembly 30, an electrode rod assembly 20 and an electrode front end assembly 10, and the connecting assembly 40, the handle assembly 30, the electrode rod assembly 20 and the electrode front end assembly 10 are sequentially connected.
The structures of the connection assembly 40, the handle assembly 30 and the electrode shaft assembly 20 can be referred to in the prior art, and the structure of the electrode front-end assembly 10 can be referred to in the first embodiment. Reference may be made to embodiment one or the prior art, to what is not mentioned in this embodiment.
The front end of the electrode rod assembly 20 is connected to the electrode front end assembly 10, and the connection manner of the two is not limited, for example, the front end of the electrode rod assembly 20 is in plug-in fit with the connection portion 112 of the support 11, or the front end of the electrode rod assembly 20 is adhered to the rear end of the support 11, etc. The rear end of the electrode rod assembly 20 is connected with the handle assembly 30, and the connection modes of the electrode rod assembly and the handle assembly are not limited, such as plugging, clamping, bonding and the like, so that the electrode front end assembly 10 is supported, and the radio frequency output connecting wire and the connecting wire of the temperature control assembly 15 are connected with the temperature control radio frequency ablation system through the inside of the electrode rod assembly and the connecting wire through the connecting assembly 40.
The electrode rod assembly 20 may be made of a metal material such as stainless steel, or a non-metal material such as plastic. In this embodiment, the electrode rod assembly 20 may be a straight rod.
Example 3:
referring to fig. 15, a third embodiment of the present invention provides a radiofrequency ablation electrode 100, and the radiofrequency ablation electrode 100 is further improved over the second embodiment.
The improvement is that, as shown in fig. 16, the electrode rod is pre-bent, i.e. the electrode rod assembly 20 is divided into at least two sections, the two sections are arranged at an included angle, and the included angle is not limited and can be set according to the needs, for example, 5 °,10 °, 15 ° and the like.
The pre-bending scheme of the electrode rod assembly 20 is not limited, for example, the electrode rod assembly 20 is made of a rigid material, that is, the electrode rod assembly 20 cannot be bent again after being pre-bent, and the bending angle of the electrode rod assembly 20 is fixed. As shown in fig. 17, the electrode rod assembly 20 may further include a reinforcing section 210 and a plastic section 211, wherein the reinforcing section 210 is made of a rigid material, the reinforcing section 210 is not bendable, the plastic section 211 is made of a bendable material, such as a soft stainless steel material, and the bending angle of the plastic section 211 is adjustable. The bending angle of the moldable segment 211 may be pre-bent by a worker before shipment, or may be bent by a medical care provider on site, and it should be noted that bending of the moldable segment 211 requires application of a force of a preset threshold, i.e., the moldable segment 211 may be bent only when the force applied to the moldable segment 211 is greater than the preset threshold, and the moldable segment 211 may not be bent when the force applied to the moldable segment 211 is less than the preset threshold, so as to avoid abnormal bending of the rf ablation electrode 100 during operation. The use state of the rf ablation electrode 100 is shown in fig. 18.
In general, the diameter of the reinforcing section 210 may be larger than the diameter of the moldable section 211, so that the reinforcing section 210 is more flexible to be used with an endoscope in a narrow space of the nasal cavity, and is not easy to be strung with the endoscope, and of course, the diameter of the reinforcing section 210 may be smaller than or equal to the diameter of the moldable section 211.
Because the turbinate mucosal surface is uneven, the root of the subnasal nerve is in a deeper position, and the electrode rod assembly 20 can bend, so that the lateral electrode assembly 13 and the front electrode assembly 14 can better abut against the turbinate mucosal surface for radio frequency ablation.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.