Multifunctional low-temperature plasma operation electrode

Abstract

A multifunctional low-temperature plasma operation electrode relates to the technical field of medical instruments and comprises a tool bit, the tool bit is integrally in a strip sheet shape, the front end of the tool bit is of a hexagonal structure, a blade portion of the tool bit is provided with an arc face, the arc face is a transition face of a tool face and a blade slope face, four edges of the tool bit of the hexagonal structure are L1, L2, L3 and L4, and the periphery of the tool bit of the hexagonal structure is provided with an arc face. Working angles A, B and C are respectively formed at the junctions of the adjacent edges of the L1, the L2, the L3 and the L4, the edges of the L2 and the L3 are short edge edges, the edges of the L1 and the L4 are long edge edges, the working width of the cutter head is H, and H is the distance between the edges of the L1 and the L4. According to the surgical electrode, the adhesion performance, durability and the like of the coating can be improved, the multi-working-area design is adopted, different types of surgical electrodes do not need to be replaced, and therefore the surgical efficiency is improved, and the economic burden of a patient is relieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially is involved in a kind of multifunctional low temperature plasma surgical electrode. BACKGROUND

[0002] The surgical electrode used in traditional electrosurgery utilizes the thermal effect of high-frequency current to cut and coagulate blood, but because its cutting temperature is high, thermal damage is large, and a large amount of harmful smoke is generated at the same time.

[0003] To realize plasma low-temperature cutting, the quality of the insulating coating coated on the surface of the electrode blade is one of the key factors affecting the low-temperature plasma cutting effect; researching appropriate methods to improve the quality of the coating is also an important part of realizing low-temperature plasma technology.

[0004] At the same time, the commonly used monopolar plasma electrode blade in clinical practice has a single function, and according to the different surgical sites and different surgical effect requirements, a surgical electrode with multiple blade structures may need to be switched during a surgery, which affects the surgical efficiency and increases the economic burden of patients;

[0005] Numerous surgical electrodes in electrosurgery are widely used in surgical operations. The traditional monopolar plasma electrode blade in this field has a U-shaped sheet shape as a whole (as shown in Figure 1 The front end cutting edge is in the form of a whole circular arc. Due to the limitations of the blade width H and the top circular arc, the contact part with the human body during surgery cannot be finely controlled, and the cutting edge line can only regionally contact the human body (the cutting edge line contact length L0≥1 / 2πD). Therefore, the surgical operation position of the blade is not accurate in clinical practice, which is not conducive to various types of surgeries in departments such as ophthalmology, ear-nose-throat surgery, plastic surgery, and neurosurgery. SUMMARY

[0006] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a multifunctional low-temperature plasma surgical electrode that can reduce thermal damage and the generation of harmful smoke, improve the adhesion and durability of the coating, and improve the surgical efficiency and reduce the economic burden of patients without the need to replace different types of surgical electrodes, thereby effectively solving the problems in the background art.

[0007] To achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0008] The utility model provides a multifunctional low temperature plasma operation electrode, including the head of a knife, the head of a knife is long strip piece as a whole, the head of a knife's front end is hexagonal structure, the head of a knife's blade front end is circular arc, and the circular arc area is the transition area of blade surface and blade slope surface, wherein the four edges of hexagonal structure head of a knife are L1, L2, L3 and L4, and the junction of adjacent edges of L1, L2, L3 and L4 forms working angle A, B and C respectively, L2 and L3 edges are short edge, and L1 and L4 edges are long edge, the working width of the head of a knife is H, and H is the distance between L1 and L4 edges, and the surface of the head of a knife is sprayed with ceramic insulating coating, and the head of a knife blade position forms the slit of uncovered coating.

[0009] Further, the thickness of the slit is 0.1-5 μm.

[0010] Further, the length of L1 and L4 edges is 5-7 mm, and the length of L2 and L3 edges is 1-2 mm.

[0011] Further, the included angle β between L1 and L2 edges is 100-130 °.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The operation electrode adopts low temperature plasma technology, designs coating insulating coating on the surface of the electrode, utilizes high frequency current skin effect and strong electric field formed at the slit of the head of a knife, generates plasma to realize low temperature cutting (40-100 DEG C) and blood coagulation of the tissue, reduces thermal damage and the generation of harmful smoke.

[0014] 2. The blade front end of the head of a knife is circular arc, and the circular arc area is the transition area of blade surface and blade slope surface, which can eliminate the surface mutation of the head of a knife caused by sharp edges, eliminate the coating stress concentration phenomenon at the place, and be favorable to improving the adhesion and durability of the coating.

[0015] 3. It adopts multi-working area design, and the electrode head has different long and short edges and sharp angle design, which can meet the needs of different operation parts, different operation cutting speed, different cutting amount, etc. in one operation, and one operation electrode can meet the needs of the operation doctor, so that different types of operation electrodes do not need to be replaced, thereby improving the operation efficiency and reducing the economic burden of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the plane structure schematic diagram of prior operation electrode;

[0017] Figure 2 It is the plane structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0019] Please see Figures 1-2 This embodiment provides a technical solution: a multifunctional low-temperature plasma surgical electrode, including a blade head. The blade head is generally in the shape of a long strip, the front end of the blade head has a hexagonal structure, and the front end of the blade is arc-shaped. This arc-shaped area is the transition area between the blade surface and the slope surface of the blade, which can eliminate the abrupt change of the blade head surface caused by sharp edges, and also eliminate the stress concentration phenomenon of the coating in this area, which is beneficial to improving the adhesion and durability of the coating.

[0020] The hexagonal cutter head has four edges, L1, L2, L3, and L4. The intersections of adjacent edges L1, L2, L3, and L4 form working angles A, B, and C, respectively. Edges L2 and L3 are short cutting edges, while edges L1 and L4 are long cutting edges. The working width of the cutter head is H, which is the distance between edges L1 and L4. The lengths of edges L1 and L4 are 5–7 mm, and the lengths of edges L2 and L3 are 1–2 mm. The distance between edges L1 and L2... The included angle β formed is 100-130°. It adopts a hexagonal blade head and is designed for multiple working areas. It has L1 and L4 long edge blades and L2 and L3 short edge blades. The L1 and L4 long edge blades are suitable for open surgery in departments such as general surgery, orthopedic surgery, and thoracic surgery. The intersection of the edges forms working angles A, B, and C, and the L2 and L3 short edge blades can also ensure precise operation by the user. It is suitable for delicate surgery in departments such as ENT, otolaryngology, plastic surgery, and neurosurgery.

[0021] The blade tip is coated with a ceramic insulating coating, leaving an uncovered slit at the cutting edge. The slit thickness ranges from 0.1 to 5 μm. The surface morphology of the coating significantly affects its uniformity. A uniform and smooth surface is a key element of a high-quality coating. An uneven surface morphology hinders the flow and distribution of the coating during application, resulting in inconsistent coating thickness. Therefore, necessary surface treatment is essential before coating application to ensure uniformity and smoothness, thus achieving a high-quality coating. Secondly, the surface morphology significantly impacts the coating's durability. Uneven surfaces can cause stress concentration, which can lead to cracking, peeling, or flaking of the coating. Furthermore, irregular surface morphology allows particles or moisture from the external environment to penetrate the coating through tiny cracks, causing corrosion and deterioration.

[0022] Typically, the cutting face and the bevel of the electrode machining head form a sharp angle that transitions directly. Due to the abrupt change in surface at the sharp edge, the insulating coating has strong fluidity, making it difficult for a thick coating to adhere at the sharp edge. Therefore, the variation in coating thickness at the sharp edge, and the resulting stress concentration, will affect the coating's adhesion and durability, leading to defects such as coating that is too thin, missing coating, or coating peeling.

[0023] This surgical electrode employs low-temperature plasma technology, utilizing the bombardment effect of plasma to separate the tissue to be cut. To achieve low-temperature plasma cutting of tissue, the surgical blade of this invention is coated with a ceramic insulating coating on the working area. After coating, the cutting edge is sharpened, creating a slit on the blade edge that is not covered by the coating. This slit concentrates energy to form a strong electric field. The high-intensity electric field ionizes the electrolyte molecules in the tissue at the contact point with the tissue within the slit, generating plasma. This plasma acts on the human body, thereby achieving low-temperature cutting (40–100°C) and coagulation of tissue, reducing thermal damage and the generation of harmful fumes.

[0024] Even within the same surgical procedure, varying surgical cutting requirements exist. Different surgical sites, organs, and conditions within the same procedure lead to variations in the length, speed, and depth of cuts, necessitating the replacement of multiple electrosurgical electrodes with different types of blades. This invention provides an electrode with a multi-working-area design, featuring edge and tip designs of varying lengths, adaptable to different surgical sites, cutting speeds, and cutting volumes within a single procedure. A single surgical electrode can meet the surgeon's diverse needs in a single surgery, eliminating the need to replace different types of electrodes, thereby improving surgical efficiency and reducing the financial burden on patients.

[0025] The working principle of the multifunctional low-temperature plasma surgical electrode provided by this utility model is as follows: It adopts a hexagonal blade with a multi-working area design, with long edge blades L1 and L4 and short edge blades L2 and L3. The long edge blades L1 and L4 are suitable for open surgeries in departments such as general surgery, orthopedics, and thoracic surgery. The intersection of the edges forms working angles A, B, and C, and the short edge blades L2 and L3 can also ensure precise operation by the user. It can be used for delicate surgeries in departments such as ENT, otolaryngology, plastic surgery, and neurosurgery.

[0026] It is worth noting that the components disclosed in the above embodiments are all general standard parts or parts known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. For example, a rotary connection can refer to a rotary connection through a bearing.

[0028] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A multifunctional low-temperature plasma surgical electrode, comprising a cutting head, characterized in that: The cutter head is generally long and thin, with a hexagonal front end. The cutting edge of the cutter head has an arc surface, which is the transition surface between the blade surface and the sloped surface of the cutting edge. The four edges of the hexagonal cutter head are L1, L2, L3, and L4. The intersections of adjacent edges L1, L2, L3, and L4 form working angles A, B, and C, respectively. Edges L2 and L3 are short edges, and edges L1 and L4 are long edges. The working width of the cutter head is H, which is the distance between edges L1 and L4. The surface of the cutter head is coated with a ceramic insulating coating, and the cutting edge forms a narrow slit without the coating.

2. The multifunctional low-temperature plasma surgical electrode according to claim 1, characterized in that: The thickness of the slit is 0.1–5 μm.

3. The multifunctional low-temperature plasma surgical electrode according to claim 1, characterized in that: The lengths of the edges L1 and L4 are 5–7 mm, and the lengths of the edges L2 and L3 are 1–2 mm.

4. The multifunctional low-temperature plasma surgical electrode according to claim 1, characterized in that: The included angle β formed between the edges of L1 and L2 is 100 to 130°.

5. The multifunctional low-temperature plasma surgical electrode according to claim 1, characterized in that: The included angle between the radii of the circular arc grinding points A and B is 55° to 65°, and the radius of the transition arc surface between the cutting edge and the cutting edge slope is 0.8 to 1.2 mm.

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