Plasma radio frequency ablation electrode reinforced by ceramic coating
By designing a wire groove on the bottom surface of the ceramic electrode support, the electrode wire is guided and bent inside the ceramic electrode support, the problems of easy breakdown and overall deflection of the electrode wire in the prior art are solved, and higher breakdown resistance and stability are achieved.
Patent Information
- Application Number
- CN202421357368.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The existing plasma radio frequency ablation electrode is prone to breakdown at the bent position of the electrode wire, resulting in product scrapping, and the bent position of the electrode wire easily touches the inner wall of the metal tube cap, resulting in overall deflection and breakdown.
A ceramic-covered reinforced plasma radio frequency ablation electrode is designed. By designing a wire trough on the bottom surface of the ceramic electrode bracket, the electrode wire is guided and bent inside the ceramic electrode bracket, increasing the distance between the electrode wire and the inner wall of the electrode tube cap, and enhancing the resistance to breakdown.
It effectively enhances the breakdown resistance of the bent part of the electrode wire, improves the stability and assembly performance of the overall structure, and extends the service life of the product.
Smart Images
Figure CN222968644U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ablation electrodes, in particular to a plasma radiofrequency ablation electrode strengthened by ceramic coating. Background Art
[0002] A radiofrequency ablation electrode is a device widely used in the medical field. This device transmits radiofrequency energy through the electrode, and uses the radiofrequency current to generate high temperature to act on tissues, thereby ablating abnormal physiological tissues.
[0003] As Figures 1-3 shown, it is a plasma radiofrequency ablation electrode in the prior art. This product is composed of multiple electrode wires, electrode plates, ceramic electrode brackets, insulating layers, metal tube caps, loop electrodes and other components. The ceramic electrode bracket is designed in a column shape with a flat bottom. During specific assembly, the electrode plate is installed on the top surface of the ceramic electrode bracket. The electrode wire is connected to the electrode plate through the guiding hole of the ceramic electrode bracket, and then the electrode wire is bent parallel to or against the bottom surface of the ceramic electrode bracket. Then, the ceramic electrode bracket is assembled onto the metal tube cap and into the metal loop electrode tube to form the electrode rod component of the plasma radiofrequency ablation electrode. In the above method, the electrode wire covered with the insulating layer needs to be bent and extended through the bottom of the ceramic electrode bracket to the inside of the metal loop electrode tube. At the bending position of the electrode wire, the distance between the electrode wire and the inner wall of the metal tube cap is small, and breakdown is likely to occur at this position during use, resulting in product scrapping. In addition, if the bending arc of the electrode wire is slightly larger, the bent part of the electrode wire is likely to touch the inner wall of the metal tube cap, further causing the deviation of the entire electrode head end (electrode wire, electrode plate and ceramic electrode bracket), and the contact between the outer insulating layer of the electrode wire and the electrode tube cap, making breakdown more likely to occur during operation and resulting in product scrapping. Summary of the Utility Model
[0004] Aiming at the above existing technical problems, the purpose of the utility model is: to propose a plasma radiofrequency ablation electrode strengthened by ceramic coating, in which the electrode wire can be guided and bent inside the ceramic electrode bracket, effectively increasing the distance between the electrode wire and the inner wall of the electrode tube cap, enhancing the breakdown resistance of the overall structure, having more excellent overall assembly performance, effectively meeting the assembly requirements of the ablation electrode, and being highly practical.
[0005] The technical solution of the utility model is realized as follows: A plasma radiofrequency ablation electrode strengthened by ceramic coating includes a metal tube cap, a ceramic electrode bracket, an electrode plate, and an electrode wire;
[0006] The metal tube cap is a hollow structure, having a length extending in a first direction, and having an open end and a closed end in the first direction;
[0007] The ceramic electrode bracket is inserted through the side wall of the metal cap, and has a bottom surface entering the interior of the metal cap and a top surface exposed outside the metal cap;
[0008] On the bottom surface of the ceramic electrode bracket, a plurality of wire grooves extending in the first direction are arranged in parallel; corresponding to each wire groove on the ceramic electrode bracket, a guiding channel communicating with the wire groove is provided; the guiding channel forms a guiding hole on the top surface of the ceramic electrode bracket;
[0009] The electrode plate is arranged on the top surface of the ceramic electrode bracket;
[0010] The electrode wire is arranged corresponding to the wire groove, and has a bent section and an extending section connected to each other; the extending section is accommodated in the wire groove and extends through the open end of the metal cap along the first direction; the bent section is inserted through the guiding channel and is connected to the electrode plate.
[0011] Further, a first insulating layer is provided on the extending section.
[0012] Further, an assembly gap is formed between the extending section and the top surface of the ceramic electrode bracket; the extending sections in two adjacent wire grooves have different sizes of assembly gaps.
[0013] Further, the bent section is inserted through the electrode plate and has a free end inserted to the side of the electrode plate facing away from the ceramic electrode bracket; a spherical structure is provided on the free end of the bent section.
[0014] Further, the plasma radiofrequency ablation electrode includes a metal loop electrode tube; the metal loop electrode tube is a hollow structure and has an assembled state connected to the open end of the metal cap; in the assembled state, the extending section extends through the open end of the metal cap and extends inside the metal loop electrode tube.
[0015] Further, a central water channel is provided on the ceramic electrode bracket; a first communication port is formed on the top surface of the ceramic electrode bracket at the first end of the central water channel, and a second communication port is formed on the side surface of the ceramic electrode bracket at the second end of the central water channel; a water permeable port corresponding to the first communication port is provided on the electrode plate; the second communication port is located inside the metal cap and is arranged facing the open end of the metal cap; the plasma radiofrequency ablation electrode includes a central water pipe; the central water pipe extends through the open end of the metal cap to the inside of the metal cap and is connected to the second communication port; in the assembled state, the central water pipe extends through the inside of the metal loop electrode tube.
[0016] Further, a second insulating layer is provided outside the metal loop electrode tube; the radiofrequency ablation electrode includes a handle assembly; the handle assembly includes a housing, an integrated cable, and a connecting water pipe; the housing is sleeved outside the second insulating layer and wraps one end of the metal loop electrode tube, the electrode wire, and the central water pipe; the metal loop electrode tube and the electrode wire are respectively connected to the integrated cable; Due to the application of the above technical solutions, the present utility model has the following advantages compared with the prior art:
[0017] 1. By the cooperative use of the ceramic electrode bracket in the present utility model, a wire groove is designed on the bottom surface of the ceramic electrode bracket, and the electrode wire is guided and bent inside the ceramic electrode bracket, increasing the distance between the electrode wire and the inner wall of the electrode tube cap and greatly enhancing the breakdown resistance of the bent part. At the same time, when the ceramic electrode bracket is assembled onto the metal tube cap, since the electrode wire is guided inside the ceramic electrode bracket, its assembly performance is more excellent, effectively meeting the assembly requirements of the ablation electrode and having strong practicability.
[0018] 2. Each wire groove of the present utility model has different depths, so that the electrode wires are arranged in a staggered high and low manner in the wire grooves, increasing the creepage distance between the electrode wires, reducing the influence between the electrode wires, and effectively improving the working stability of the overall structure.
[0019] 3. By the cooperative use of the central water path and the central water pipe in the present utility model, external physiological saline, etc. can reach the working part through the central water pipe and the central water path, so as to be excited to generate plasma on the electrode wire and the electrode plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The technical solutions of the present utility model will be further described below with reference to the drawings:
[0021] Figure 1 is a three-dimensional structure schematic diagram of an ablation electrode in the prior art;
[0022] Figure 2 is Figure 1 an exploded view of;
[0023] Figure 3 is Figure 1 a cross-sectional structure schematic diagram of;
[0024] Figure 4 is a three-dimensional structure schematic diagram of the overall structure of the present utility model;
[0025] Figure 5 is Figure 4 an enlarged view of part A in;
[0026] Figure 6 is Figure 5 an exploded view of;
[0027] Figure 7 Schematic assembly diagram of the electrode wire of the present utility model;
[0028] Figure 8 Schematic assembly diagram of the central water pipe of the present utility model;
[0029] Figure 9 Three-dimensional structure diagram of the electrode wire and ceramic electrode bracket of the present utility model;
[0030] Figure 10 Three-dimensional structure diagram of the ceramic electrode bracket of the present utility model;
[0031] Figure 11 is Figure 10 Three-dimensional structure diagram of another perspective of;
[0032] Figure 12 Schematic structure diagram of the electrode wire of the present utility model;
[0033] Wherein: 1, metal pipe cap; 11, assembly port; 12, open end; 2, ceramic electrode bracket; 21, wire groove; 22, guiding channel; 23, guiding hole; 24, central waterway; 25, first communication port; 26, second communication port; 3, electrode plate; 31, insertion hole; 32, water permeable port; 4, electrode wire; 41, extension section; 42, bending section; 43, sphere; 5, metal loop electrode tube; 6, second insulating layer; 61, first insulating layer; 7, central water pipe; 8, outer shell; 9, integrated cable; 91, connecting water pipe. Specific embodiments
[0034] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.
[0035] Such as Figures 4-11Shown is a plasma radiofrequency ablation electrode with ceramic coating reinforcement according to this embodiment, which is applied to ablation surgery in the medical field. The plasma radiofrequency ablation electrode includes components such as a metal tube cap 1, a ceramic electrode support 2, an electrode plate 3, an electrode wire 4, and a metal loop electrode tube 5. Among them, the metal tube cap 1 has a hollow structure, has a length extending in the first direction, and has an open end 12 and a closed end in the first direction. An assembly opening 11 is machined on the side wall of the metal tube cap 1. In this embodiment, the first direction is defined as the horizontal direction. The aforementioned ceramic electrode support 2 is a columnar structure made of ceramic. The ceramic electrode support 2 is inserted through the assembly opening 11 on the side wall of the metal tube cap 1, so that the lower end of the ceramic electrode support 2 enters the inside of the metal tube cap 1, having a bottom surface entering the inside of the metal tube cap 1 and a top surface exposed outside the metal tube cap 1. Among them, a plurality of wire grooves 21 extending in the first direction are arranged in parallel on the bottom surface of the ceramic electrode support 2. The number of wire grooves 21 in this embodiment is four. The end of the wire groove 21 facing the open end 12 of the metal tube cap 1 forms an opening. A guiding channel 22 communicating with the wire groove 21 is machined inside the ceramic electrode support 2 corresponding to each wire groove 21. The guiding channel 22 is arranged to extend vertically, and its extending direction is perpendicular to the extending direction of the wire groove 21. The first end of the guiding channel 22 forms a guiding hole 23 on the bottom surface of the wire groove 21, and the second end forms a guiding hole 23 on the top surface of the ceramic electrode support 2.
[0036] The aforementioned electrode plate 3 is placed on the top surface of the ceramic electrode support 2. The electrode plate 3 covers the guiding holes 23 on the top surfaces of the respective ceramic electrode supports 2. Insertion holes 31 are machined on the electrode plate 3 corresponding to the guiding holes 23 on the top surfaces of the ceramic electrode supports 2. An electrode wire 4 is arranged corresponding to each wire groove 21. The electrode wire 4 tightly fixes the electrode plate 3 to the top surface of the ceramic electrode support 2 and is fixed by filling glue inside the metal tube cap 1. The electrode wire 4 has a bent section 42 and an extension section 41 connected to each other. Among them, the extension section 41 is accommodated in the wire groove 21, extends along the first direction through the open end 12 of the metal tube cap 1, and can extend to the outside of the metal tube cap 1. The above-mentioned bent section 42 and extension section 41 are connected by an arc transition section. The bent section 42 is inserted into the guiding channel 22 and into the insertion holes 31 of the electrode plate 3. The bent section 42 has a free end inserted to the side of the electrode plate 3 facing away from the ceramic electrode support 2. A spherical structure is designed on the free end of the bent section 42. The spherical structure is integrally formed with the electrode wire 4, which can increase the plasma emission range and the contact area with the patient during the operation, so as to better contact the surgical site.
[0037] Among them, the above-mentioned metal loop electrode tube 5 has a hollow structure, and one end has an assembled state connected to the open end 12 of the metal tube cap 1. In this assembled state, the aforementioned extension section 41 extends through the open end 12 of the metal tube cap 1 and extends into the inside of the metal loop electrode tube 5.
[0038] In this embodiment, a first insulating layer 61 is arranged on the extension section 41 of each of the foregoing electrode wires 4. The first insulating layer 61 has a tubular structure and is sleeved on the extension section 41 of the electrode wire 4. Through the first insulating layer 61, the electrode wire 4 and the metal tube cap 1 are insulated and isolated from each other, and the electrode wire 4 and the metal loop electrode tube 5 are insulated and isolated from each other.
[0039] In this embodiment, an assembly gap is formed between the extension section 41 of the foregoing electrode wire 4 and the top surface of the ceramic electrode bracket 2. There are different machining depths between two adjacent wire grooves 21. The extension section 41 of the foregoing electrode wire 4 is assembled to a predetermined position of the wire groove 21 so that the extension sections 41 in two adjacent wire grooves 21 have different assembly gaps. Through the above structural design, the electrode wires 4 are arranged in a staggered height in the wire groove 21, increasing the creepage distance between the electrode wires 4, reducing the influence between the electrode wires 4, and effectively improving the working stability of the overall structure.
[0040] In this embodiment, a central water channel 24 is machined inside the ceramic electrode bracket 2. The first end of the central water channel 24 forms a first communication port 25 on the top surface of the ceramic electrode bracket 2, and the second end of the central water channel 24 forms a second communication port 26 on the side surface of the ceramic electrode bracket 2. A water permeable port 32 is machined on the foregoing electrode sheet 3 corresponding to the first communication port 25. The second communication port 26 is located inside the metal tube cap 1 and is arranged facing the open end 12 of the metal tube cap 1. The plasma radiofrequency ablation electrode of this embodiment includes a central water pipe 7. The central water pipe 7 can be inserted into the inside of the metal tube cap 1 through the open end 12 of the metal tube cap 1 and is connected to the second communication port 26 so that the central water pipe 7 and the central water channel 24 are connected. In the foregoing assembled state, the central water pipe 7 extends through the inside of the metal loop electrode tube 5.
[0041] In this embodiment, a second insulating layer 6 is arranged outside the metal loop electrode tube 5. The second insulating layer 6 has a tubular structure and is sleeved outside the metal loop electrode tube 5. The radiofrequency ablation electrode of this embodiment further includes a handle assembly. The handle assembly includes a housing 8, an integrated cable 9, and a connecting water pipe 91. The housing 8 is sleeved outside the second insulating layer 6 and is arranged at one end of the metal loop electrode tube 5 away from the metal tube cap 1. The ends of the metal loop electrode tube 5, the electrode wire 4, and the central water pipe 7 are synchronously wrapped inside the housing 8. The foregoing integrated cable 9 extends into the inside of the housing 8 and is connected to the metal loop electrode tube 5 and the electrode wire 4. And the foregoing central water pipe 7 extends into the inside of the housing 8 and is connected to one end of the central water pipe 7.
[0042] The radio frequency transmitter is connected to the integrated cable 9. The radio frequency transmitter emits radio frequency current, which reaches the surgical site through the electrode wire 4, stimulates the sodium ions in the physiological saline (electrolyte) at the surgical site, generates an ionized plasma layer between the electrode wire 4 and the metal loop electrode tube 5, and the highly excited plasma rapidly breaks the molecular bonds between tissues, thus achieving the purpose of cutting and ablation.
[0043] During specific assembly, the electrode wire 4 with an insulating layer on its surface is inserted into the guiding channel 22 from the top of the ceramic electrode bracket 2, then bent and enters the wire groove 21 and extends along the wire groove 21. Then the ceramic electrode bracket 2 is assembled onto the metal tube cap 1. The electrode wire 4 is wrapped by the wire groove 21 at the bottom of the ceramic electrode bracket 2, which solves the problem of discharge breakdown between the electrode wire 4 and the electrode tube cap, and at the same time solves the problem of skewing of the ceramic electrode bracket 2 caused by bending of the electrode wire 4, effectively meeting the assembly requirements of the ablation electrode and having strong practicability.
[0044] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.
Claims
1. A ceramic-coated and reinforced plasma radiofrequency ablation electrode, comprising a metal tube cap, a ceramic electrode bracket, an electrode sheet, and an electrode wire; characterized in that: The metal pipe cap is a hollow structure, has a length extending along a first direction, and has an open end and a closed end located in the first direction; The ceramic electrode bracket is inserted into the side wall of the metal tube cap and has a bottom surface entering the interior of the metal tube cap and a top surface exposed to the outside of the metal tube cap; A plurality of wire grooves extending in a first direction are arranged in parallel on the bottom surface of the ceramic electrode support; a guide channel connected to the wire groove is arranged on the ceramic electrode support corresponding to each wire groove; and a guide hole is formed on the top surface of the ceramic electrode support; The electrode sheet is arranged on the top surface of the ceramic electrode support; The electrode wire is arranged corresponding to the wire slot, and has a bending section and an extension section connected to each other; the extension section is accommodated in the wire slot and extends through the open end of the metal pipe cap along the first direction; the bending section is inserted in the guide channel and connected to the electrode sheet.
2. The ceramic-coated and reinforced plasma radiofrequency ablation electrode according to claim 1, characterized in that: A first insulating layer is arranged on the extending section.
3. The ceramic-coated and reinforced plasma radio frequency ablation electrode according to claim 1, characterized in that: An assembly spacing is formed between the extension section and the top surface of the ceramic electrode support; the extension sections in two adjacent wire slots have assembly spacings of different sizes.
4. The ceramic-coated and reinforced plasma radio frequency ablation electrode according to claim 1, characterized in that: The bending section is inserted into the electrode sheet and has a free end inserted into the electrode sheet on the side facing away from the ceramic electrode support; a spherical structure is arranged on the free end of the bending section.
5. The ceramic-coated and reinforced plasma radio frequency ablation electrode according to claim 1, characterized in that: The plasma radio frequency ablation electrode comprises a metal loop electrode tube; the metal loop electrode tube is a hollow structure and has an assembled state connected to the open end of the metal tube cap; in the assembled state, the extension section extends into the interior of the metal loop electrode tube through the open end of the metal tube cap.
6. The ceramic-coated and reinforced plasma radio frequency ablation electrode according to claim 5, characterized in that: A central water channel is provided on the ceramic electrode bracket; a first end of the central water channel forms a first connecting port on the top surface of the ceramic electrode bracket, and a second end of the central water channel forms a second connecting port on the side surface of the ceramic electrode bracket; a water permeable port is provided on the electrode sheet corresponding to the first connecting port; the second connecting port is located inside the metal tube cap and is arranged facing the open end of the metal tube cap; the plasma radio frequency ablation electrode includes a central water pipe; the central water pipe is inserted into the inside of the metal tube cap through the open end of the metal tube cap and is connected to the second connecting port; in the assembled state, the central water pipe is inserted and extends into the inside of the metal loop electrode tube.
7. The ceramic-coated and reinforced plasma radio frequency ablation electrode according to claim 6, characterized in that: A second insulating layer is provided on the outside of the metal loop electrode tube; the radio frequency ablation electrode includes a handle assembly; the handle assembly includes an outer shell, an integrated cable, and a connecting water pipe; the outer shell is sleeved on the outside of the second insulating layer and wraps the metal loop electrode tube, the electrode wire, and one end of the central water pipe; the metal loop electrode tube and the electrode wire are respectively connected to the integrated cable; one end of the central water pipe.