Plasma operation electrode

Abstract

The plasma operation electrode comprises an electrode wire and a metal tube, a ceramic sleeve is arranged at the tail end of the electrode wire, the metal tube wraps the ceramic sleeve, at least one groove is formed in the ceramic sleeve, the whole section of the ceramic sleeve is wrapped by an insulating sleeve from the groove in the direction away from the tail end of the electrode wire, and a C-shaped ring is fixed to the portion, at the groove, of the insulating sleeve. The C-shaped ring is connected with the metal pipe in a welding mode so as to enhance the structural stability. Through the metal tube crimping or laser welding process, the connection strength between the electrode wire and the ceramic sleeve and between the ceramic sleeve and the metal tube is improved, and the stability under the conditions of high temperature and long-term use is ensured. The performance of traditional mucilage glue may be degraded in a high-temperature environment, but the metal pipe crimping and laser welding technology of the high-temperature-resistant high-temperature-resistant adhesive tape can effectively resist high-temperature influences, and the long-term stability and reliability of connecting parts at the high temperature are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and specifically relates to a plasma surgical electrode. BACKGROUND

[0002] As an indispensable high-precision medical instrument in modern surgical operations, the plasma surgical electrode is widely used in cutting and coagulating tissues, greatly improving the accuracy and efficiency of operations. The electrode is ingeniously constructed and mainly consists of three parts: an electrode wire, a ceramic sleeve, and a metal tube, each of which plays an irreplaceable role. The electrode wire, as the core component directly involved in the operation, undertakes the task of current conduction and ensures the accurate release of energy during the operation; the ceramic sleeve provides a solid protective barrier for the electrode wire with its insulating properties and mechanical strength, while ensuring the stable position of the electrode wire during the operation; and the metal tube is ingeniously designed to serve as both a return electrode and a structure support and fixation, laying a foundation for the stability and operational convenience of the entire electrode system.

[0003] However, under the existing technical framework, the connection between the electrode wire and the ceramic sleeve, and the ceramic sleeve and the metal tube mainly relies on adhesive technology. Although this connection method appears relatively simple in structure, its inherent limitations have gradually emerged, becoming a key factor restricting the further improvement of the performance of the plasma surgical electrode.

[0004] Specifically, the defects of the adhesive connection in the existing technology mainly manifest in the following aspects:

[0005] 1. High-temperature sensitivity problem: During the operation, the plasma surgical electrode generates extremely high temperatures when exciting plasma. Under such extreme conditions, the physical properties of the adhesive material are prone to degradation, including but not limited to softening, dissolution, and a significant decrease in strength, which directly threatens the overall structural stability of the electrode and the safety of the operation process.

[0006] 2. Chemical instability: The dual effects of high temperature and plasma environment not only test the physical properties of the adhesive but also pose a severe challenge to its chemical structure. The adhesive material may undergo complex chemical reactions under high temperatures, leading to the destruction of the chemical structure and the generation of unknown compounds, which may have unpredictable effects on the patient.

[0007] 3. Potential risk of biocompatibility: Although the plasma surgical electrode will undergo strict biocompatibility tests before leaving the factory, these tests are usually conducted in a non-working state. Once the electrode's performance changes due to high temperatures during use, its biocompatibility may be greatly compromised, and even harmful substances may be produced, posing a potential threat to the patient's health.

[0008] 4. Durability challenge of connection strength: although the adhesive connection can achieve the close combination of the components to some extent, the joint is prone to looseness or even falling off during long-term use and frequent operation, which not only affects the precision and effect of the surgical electrode, but also greatly shortens the service life of the product and increases the medical cost.

[0009] In summary, the various deficiencies of the adhesive connection method in the prior art urgently require researchers to explore a more reliable connection method to improve the comprehensive performance of the plasma surgical electrode and ensure the safety and effectiveness of the surgery. Content of the utility model

[0010] The technical problem solved: in view of the structural problems existing in the prior art plasma surgical electrode, the utility model provides an improved plasma surgical electrode, which improves the safety and effectiveness of the surgery by changing the structure and connection relationship.

[0011] Technical scheme: a plasma surgical electrode, comprising an electrode wire and a metal pipe, the end of the electrode wire is provided with a ceramic sleeve, the metal pipe is covered on the ceramic sleeve, at least one groove is arranged on the ceramic sleeve, from the start of the groove, in the direction away from the end of the electrode wire, the whole section is covered by an insulating sleeve, and a C-shaped ring is fixed on the insulating sleeve at the groove position, the C-shaped ring is connected with the metal pipe by welding to enhance the structural stability.

[0012] The above-mentioned groove is circumferential, which is uniformly distributed on the outer surface of the ceramic sleeve, so as to facilitate the uniform fixation of the C-shaped ring.

[0013] The length of the above-mentioned C-shaped ring is not longer than the length of the groove, so as to ensure that the C-shaped ring can be completely embedded in the groove and effectively welded with the metal pipe.

[0014] The above-mentioned electrode wire is provided with a metal sleeve, the outer diameter of the metal sleeve is designed to be larger than the inner diameter of the ceramic sleeve, so that the end face of the metal sleeve can tightly abut against the end face of the ceramic sleeve.

[0015] The above-mentioned electrode wire and the metal sleeve are firmly connected by welding or crimping.

[0016] The distal end of the above-mentioned metal pipe is provided with a connecting part for connecting with the output end of the plasma surgical equipment, so as to facilitate the installation and dismounting of the electrode.

[0017] The inner wall of the above-mentioned metal sleeve is provided with a groove or a thread matched with the shape of the electrode wire, so as to increase the contact area and friction force between the electrode wire and the metal sleeve, and improve the stability and reliability of the connection.

[0018] Beneficial effects: 1. Strengthen the connection strength: through the metal tube pressure connection or laser welding process, improve the connection strength between the electrode wire and the ceramic sleeve and the ceramic sleeve and the metal tube, ensure the stability under the condition of high temperature and long-term use. 2, improve the high temperature resistance: the traditional adhesive performance may degrade in high temperature environment, while the metal tube pressure connection and laser welding process of the utility model can effectively resist the influence of high temperature, ensure the long-term stability and reliability of the connection parts under high temperature. 3, avoid the defects related to adhesive: the defects such as chemical performance change, biocompatibility problem and insufficient connection strength which may appear in traditional adhesive connection are effectively avoided. This ensures the safety and effectiveness of medical devices in clinical application. 4, improve the product life: the improved connection scheme avoids the risk of adhesive aging and failure, prolongs the service life of the product, improves the reliability in use. 5, reduce the production risk: the connection mode of metal tube and laser welding process improves the controllability of production process, reduces the production risk caused by uneven adhesive curing. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a schematic diagram of the head end structure of the plasma surgical electrode.

[0020] Fig. 2 It is a schematic diagram of the plasma surgical electrode structure.

[0021] Explanation of reference signs: 1-electrode wire, 2-ceramic sleeve, 3-insulating sleeve, 4-metal sleeve, 5-metal tube, 6-C-shaped ring, 7-groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the attached drawings to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer. Figs. 1-2 The technical scheme of the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.

[0023] Embodiment 1

[0024] A kind of plasma surgical electrode, including electrode wire 1 and metal tube 5, the end of electrode wire 1 is provided with ceramic sleeve 2, metal tube 5 is covered on ceramic sleeve 2, at least one groove 7 is provided on ceramic sleeve 2, from the start of groove 7, along the direction away from the end of electrode wire 1, the whole section is covered by insulating sleeve 3, and C-shaped ring 6 is fixed on the insulating sleeve 3 at the position of groove 7, the buckle angle of C-shaped ring is less than 180 °, to facilitate pre-fixing on the insulating sleeve;The thickness of C-shaped ring is preferably not less than 0.05mm, so as to have enough backstop ceramic head. C-shaped ring 6 is connected with metal tube 5 by welding, to enhance the structural stability. The groove 7 is circumferential, is uniformly distributed on the outer surface of ceramic sleeve 2, to facilitate the uniform fixing of C-shaped ring 6. The length of C-shaped ring 6 is not longer than the length of groove 7, to ensure that C-shaped ring 6 can be completely embedded in groove 7 and effectively welded with metal tube 5.

[0025] Verification experiment: test of connection strength of plasma surgical electrode

[0026] Experimental materials

[0027] Experimental group: the plasma surgical electrode of the utility model.

[0028] Control group: plasma surgical electrode connected by traditional adhesive.

[0029] Test equipment: tensile testing machine, high-temperature oven, microscope (for observing weld form).

[0030] Experimental steps

[0031] Connection strength test:

[0032] Use tensile testing machine to test the tensile strength of plasma surgical electrode samples in experimental group and control group, and record the maximum breaking force.

[0033] High-temperature resistance test:

[0034] Place samples in experimental group and control group in high-temperature oven, set temperature to 150℃, and continue for 72 hours. After taking out the samples, test the tensile strength again, and record the maximum breaking force.

[0035] Weld form observation:

[0036] Use microscope to observe the laser welding weld form of samples in experimental group, and evaluate the uniformity and quality of weld.

[0037] Experimental data

[0038] 1. Connection strength test data:

[0039] Experimental group (the utility model): the average maximum breaking force is 500N, and the standard deviation is 10N.

[0040] Control group (traditional adhesive connection): the average maximum breaking force is 300N, and the standard deviation is 15N.

[0041] t-test analysis shows that the difference between the two groups is statistically significant (P<0.05).

[0042] 2. High temperature performance test data:

[0043] Experimental group (after high temperature treatment): the average maximum breaking force is 480N, and the standard deviation is 12N, and the strength retention rate is 96%.

[0044] Control group (after high temperature treatment): the average maximum breaking force is 200N, and the standard deviation is 20N, and the strength retention rate is 67%.

[0045] t-test analysis shows that the difference between the two groups is statistically significant (P<0.05).

[0046] 3. Welding seam observation:

[0047] The laser welding seam of the experimental group sample is uniform and has no obvious defects, indicating that the welding quality is good.

[0048] Experimental conclusion

[0049] The connection strength of the plasma surgical electrode enhanced by the metal tube crimping and laser welding process is significantly higher than that of the traditional adhesive connection method. Under high temperature conditions, the connection method of the utility model can still maintain high connection strength, while the performance of the traditional adhesive connection method is significantly degraded. In addition, the laser welding seam is uniform and of good quality, further verifying the superiority of the utility model. These results show that the plasma surgical electrode of the utility model has higher safety and effectiveness in clinical application.

[0050] Example 2

[0051] The basic structure is the same as that of example 1, and further, the electrode wire 1 is sleeved with a metal sleeve 4, the outer diameter of the metal sleeve 4 is designed to be larger than the inner diameter of the ceramic sleeve 2, so that the end face of the metal sleeve 4 can tightly abut the end face of the ceramic sleeve 2. The electrode wire 1 and the metal sleeve 4 are firmly connected by welding or crimping. The distal end of the metal tube 5 is provided with a connecting part for connecting with the output end of the plasma surgical equipment, facilitating the installation and disassembly of the electrode. The inner wall of the metal sleeve 4 is provided with a groove or thread matched with the shape of the electrode wire 1 to increase the contact area and friction force between the electrode wire 1 and the metal sleeve 4, and improve the stability and reliability of the connection.

[0052] The electrode wire is connected with the metal sleeve by welding or crimping, and the close abutting design between the metal sleeve and the ceramic sleeve is ensured, so that the connection stability of the plasma surgical electrode is remarkably improved. Under high temperature conditions, the design still has high connection stability, and the traditional connection mode shows significant performance degradation. Microscope observation results show that the connection part of the experimental group is uniform and close, which further verifies the superiority of the design. These results show that the plasma surgical electrode has higher stability and reliability in clinical application.

[0053] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A plasma surgical electrode, comprising an electrode wire (1) and a metal tube (5), wherein the end of the electrode wire (1) is provided with a ceramic sleeve (2), and the metal tube (5) is covered on the ceramic sleeve (2), characterized in that, The ceramic sleeve (2) is provided with at least one groove (7). Starting from the groove (7), the entire section is covered by an insulating sleeve (3) in the direction away from the end of the electrode wire (1). A C-shaped ring (6) is fixed on the insulating sleeve (3) at the groove (7). The C-shaped ring (6) is connected to the metal tube (5) by welding to enhance the structural stability.

2. The plasma surgical electrode according to claim 1, characterized in that, The groove (7) is circumferential and evenly distributed on the outer surface of the ceramic sleeve (2) to facilitate the uniform fixing of the C-shaped ring (6).

3. The plasma surgical electrode according to claim 1, characterized in that, The length of the C-ring (6) is no longer than the length of the groove (7), ensuring that the C-ring (6) can be fully embedded in the groove (7) and effectively welded to the metal tube (5).

4. The plasma surgical electrode according to claim 1, characterized in that, A metal sleeve (4) is fitted on the electrode wire (1). The outer diameter of the metal sleeve (4) is designed to be larger than the inner diameter of the ceramic sleeve (2), so that the end face of the metal sleeve (4) can be tightly abutted against the end face of the ceramic sleeve (2).

5. The plasma surgical electrode according to claim 4, characterized in that, The electrode wire (1) and the metal sleeve (4) are firmly connected by welding or crimping.

6. The plasma surgical electrode according to claim 1, characterized in that, The distal end of the metal tube (5) is provided with a connecting part for connecting to the output end of the plasma surgery device, which facilitates the installation and removal of the electrode.

7. The plasma surgical electrode according to claim 4, characterized in that, The inner wall of the metal sleeve (4) is provided with a groove or thread that matches the shape of the electrode wire (1) to increase the contact area and friction between the electrode wire (1) and the metal sleeve (4), thereby improving the stability and reliability of the connection.

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