Low-temperature plasma operation electrode tool bit convenient for fine operation

Abstract

The utility model discloses a low-temperature plasma surgery electrode knife head convenient for fine operation, which comprises a knife handle, the front side of the knife handle is connected with a knife head main body, one end of the knife head main body is provided with a blood coagulation working surface, and a plurality of micro convex ball points are uniformly distributed on the upper side surface and the lower side surface of the blood coagulation working surface. According to the low-temperature plasma operation electrode knife head, the knife handle, the knife head body, the insulating coating, the cutting working area, the side knife face, the front knife face, the knife head cutting edge, the bottom knife face and the top knife face are arranged, the area for cutting work is designed to be small, and the contact area between the electrode cutting working area and tissue cells of a patient is reduced; by arranging the blood coagulation working face and the micro-convex ball points, when high-frequency current is generated in the electrode, due to the fact that the surface area of the smooth surface is increased, the skin effect of the high-frequency current is formed, charges are concentrated on the surfaces of the micro-convex ball points, energy is focused through the vertexes of the micro-convex ball points, the energy density of the contact position with local tissue is increased, tissue blood coagulation is faster, and the blood coagulation efficiency is improved. The blood coagulation efficiency is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a low temperature plasma operation electrode cutter head convenient to fine operation. BACKGROUND

[0002] Operation electrode is widely used in various surgical operations, and at present, in the operation of the department of ophthalmology and otolaryngology, chest surgery, tumor surgery, there is a kind of more safe, efficient, convenient minimally invasive cutting operation electrode, in the current clinical application, a kind of low temperature plasma operation electrode is realized on the basis of the original electric knife, low temperature plasma cutting, but the cutter head structure size is slender, and the cutting edge is not easy to control and leads to misincision, and the blood coagulation effect is poor. UTILITY MODEL CONTENT

[0003] The utility model solves the technical problem that the existing defects are overcome, and a low temperature plasma operation electrode cutter head convenient to fine operation is provided, which can control the cutting edge to avoid misincision, and the blood coagulation effect is good, and the problems in the background art can be effectively solved.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A low temperature plasma operation electrode cutter head convenient to fine operation, including handle, the front side of handle is connected with cutter head main part, one end of cutter head main part is equipped with blood coagulation working surface, the upper and lower two side surfaces of blood coagulation working surface are evenly arranged with a plurality of micro convex ball points, the other end of cutter head main part is equipped with cutting working area, the surface of cutter head main part is sprayed with insulating coating;

[0006] The cutting working area includes side tool face, bottom tool face, rake face, top tool face and cutter head edge, and the connecting part of the rake face, the side tool face and the bottom tool face forms the cutter head edge.

[0007] As a preferred technical scheme of the utility model, the length L1 of the cutting working area is 3-5mm, and the width W1 of the cutting working area is 1.8-2mm.

[0008] As a preferred technical scheme of the utility model, the thickness t of the cutting working area is 0.3-0.9mm.

[0009] As a preferred technical scheme of the utility model, the cutting edge cutting angle alpha of the cutting working area is 27-33 °.

[0010] As a preferred technical scheme of the utility model, the width d of the side tool face is 0.5-1.0mm.

[0011] As a preferred technical scheme of the utility model, the outer diameter SR0 of the micro convex ball point is 0.15-0.3mm, the height h0 of the micro convex ball point is 0.4-0.6mm, and the center distance L0 between the two adjacent micro convex ball points is 2-3 times SR0.

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

[0013] The low-temperature plasma surgical electrode cutter head is used for the miniaturized design of the cutting work area, reduces the contact area between the electrode cutting work area and the patient's tissue cells, reduces the uncontrollable surgical trauma to the patient, improves the surgical precision, and through the setting of the coagulation work surface and the micro convex ball point, the skin effect of high-frequency current is formed due to the increase of the surface area of the smooth surface when high-frequency current is generated in the electrode, the electric charge is concentrated on the surface of the micro convex ball point, the apex of the micro convex ball point focuses energy, increases the energy density at the contact part with the local tissue, makes the tissue coagulation faster, and the coagulation efficiency is higher. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model.

[0015] Figure 2 It is a structural schematic view of the cutting work area of the utility model.

[0016] Figure 3 It is a partial sectional view of the cutting work area of the utility model.

[0017] Figure 4 It is a structural schematic view of the coagulation work surface of the utility model.

[0018] Figure 5 It is a structural schematic view of the micro convex ball point of the utility model.

[0019] Figure 6 It is a working state simulation schematic view of the micro convex ball point of the utility model.

[0020] Figure 7 It is a structural schematic view of the low-temperature plasma surgical electrode in the current clinical application.

[0021] Figure 8 It is a structural schematic view of the minimally invasive cutter head wrapped with a margin sleeve.

[0022] In the figure: handle 1, head body 2, coagulation working surface 21, micro convex ball point 211, high frequency current skin effect top end concentrated electric field 212, insulating coating 213, cutting working area 22, side tool face 221, rake face 222, head cutting edge 223, bottom tool face 224, top tool face 225, human tissue 3, heat shrink tube 4. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-8 The utility model provides a technical scheme:

[0025] A low-temperature plasma surgical electrode head convenient for fine operation, comprising a handle 1, the front side of the handle 1 is connected with a head body 2, one end of the head body 2 is provided with a coagulation working surface 21, the upper and lower two side faces of the coagulation working surface 21 are evenly provided with a plurality of micro convex ball points 211, the other end of the head body 2 is provided with a cutting working area 22, and the surface of the head body 2 is sprayed with an insulating coating 213.

[0026] The cutting working area 22 comprises a side tool face 221, a bottom tool face 224, a rake face 222, a top tool face 225 and a head cutting edge 223, and the connecting place of the rake face 222, the side tool face 221 and the bottom tool face 224 forms the head cutting edge 223.

[0027] The length L1 of the cutting working area 22 is 3-5mm, the width W1 of the cutting working area 22 is 1.8-2mm, the length L1 is preferably 4mm, and the width W1 is preferably 1.9mm.

[0028] The thickness t of the cutting working area 22 is 0.3-0.9mm, and the thickness t is preferably 0.6mm.

[0029] The cutting edge cutting angle alpha of the cutting working area is 27-33 DEG, the cutting edge cutting angle alpha can be controlled in the range of 30 DEG plus or minus 3 DEG, preferably 30 DEG, alpha = arctg (t / d).

[0030] The width d of the side tool face 221 is 0.5-1.0mm, preferably 0.7mm, the width d of the side tool face 221 can be adjusted to adjust the cutting edge cutting angle alpha, improve or reduce the sharpness of the head, improve the cutting efficiency of the patient's lesion and reduce the operation time.

[0031] The outer diameter SR0 of the micro convex ball point 211 is 0.15-0.3mm, preferably 0.22mm, the height h0 of the micro convex ball point 211 is 0.4-0.6mm, preferably 0.5mm, and the center distance L0 between two adjacent micro convex ball points 211 is 2-3 times SR0, preferably 0.45mm.

[0032] The convex height of the micro convex ball point 211 is suitable, the circumferential arrangement is uniform, the plane between the micro convex ball points 211 is isolated by the insulating coating 213, the energy output at the top of the micro convex ball point 211 is realized to complete the surgical ablation, and at the same time, the phenomenon that the gap between the micro convex ball points is completely covered due to the accumulation of the coating in the spraying process of the insulating coating 213 is avoided, and the production yield is improved.

[0033] Figure 7 For the low-temperature plasma surgical electrode currently used in clinical applications, the length of the working part of the knife head is relatively long, so that there are more space barriers during the operation, affecting the precision of the operation, the long working part is not conducive to fine operation, and the surgical wound cannot be controlled finely and minimally invasively; and the thermal damage is also large, which is also not conducive to fine operation. In order to realize the requirement of fine and minimally invasive operation, some use the method of insulating the working part of the electrode knife head by insulating sleeve and the like to realize fine cutting, which is actually a post remedial method for the original surgical knife, and the electrode knife head is covered with a heat shrink tube 4. Figure 8

[0034] The low-temperature plasma surgical electrode is used for fine operation of nerve stripping, skin flap separation and ear, nose and throat parts, and the low-temperature plasma surgical electrode is divided into a knife handle 1 and a knife head main body 2, the knife head main body 2 includes a coagulation working surface 21 and a cutting working area 22, the knife head main body 2 is entirely sprayed with an insulating coating 213, and the edge of the cutting working area 22 is sharpened to form a slit in the knife head edge 223 without covering the insulating coating 213, and the thickness H of the slit is 0.1-5μm, preferably 0.3μm.

[0035] The slit can concentrate energy to the slit of the knife head to form a strong electric field, the high-strength electric field ionizes the tissue electrolyte molecules in contact with the tissue in the slit to generate plasma, the plasma acts on the human body, thereby realizing low-temperature cutting (40-100℃) and coagulation of the tissue, reducing thermal damage and the generation of harmful smoke, and further reducing the influence on the surgical field of view.

[0036] In addition to the slit edge of the sharpening treatment, the insulating coating 213 on the surface of the knife head main body 2 is insulated from the human body during cutting operation, does not discharge and does not cause additional damage, and is conducive to precise operation during the operation.

[0037] ​The low-temperature plasma surgical electrode cutter head has two coagulation working surfaces 21, and a plurality of micro convex ball points 211 are uniformly distributed on the surfaces, so that the micro convex ball points 211 can realize more efficient coagulation and have better coagulation effect on large amount of bleeding and sheet bleeding.

[0038] Referring to Figure 6 When high-frequency current is generated in the low-temperature plasma surgical electrode cutter head, the skin effect of the high-frequency current is formed due to the increase of the surface area of the smooth surface, the electric charge is concentrated on the surface of the micro convex ball point 211, the top of the micro convex ball point 211 focuses the energy, the high-frequency current skin effect top end concentrated electric field 212 is formed, the energy density at the contact position with the human tissue 3 is increased, the tissue coagulation is faster, and the coagulation efficiency is higher.

[0039] When the high-frequency current skin effect top end concentrated electric field 212 is generated in the low-temperature plasma surgical electrode cutter head, the micro convex part of the micro convex ball point 211 forms a local high field strength, the local field enhancement can quickly establish a discharge ablation channel, and the requirement for the applied voltage amplitude is reduced; at the same voltage level, the local field strength can effectively increase the effect of the electrode. The micro convex ball point 211 is higher than the top end surface, and the edge of the top end surface has an insulating coating, so that the edge of the top end surface can avoid discharging to the human tissue 3, the surgical precision is improved, and the damage to the non-target tissue is reduced.

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A low-temperature plasma surgical electrode tip for easy and precise operation, comprising a handle (1), characterized in that: The front side of the handle (1) is connected to the blade body (2). One end of the blade body (2) is provided with a coagulation working surface (21). Multiple micro-convex spherical points (211) are evenly distributed on the upper and lower sides of the coagulation working surface (21). The other end of the blade body (2) is provided with a cutting working area (22). The surface of the blade body (2) is sprayed with an insulating coating (213). The cutting work area (22) includes a side blade surface (221), a bottom blade surface (224), a front blade surface (222), a top blade surface (225), and a cutting edge (223). The connection between the front blade surface (222), the side blade surface (221), and the bottom blade surface (224) constitutes the cutting edge (223).

2. The low-temperature plasma surgical electrode tip for precise operation according to claim 1, characterized in that: The length L1 of the cutting work area (22) is 3-5mm, and the width W1 of the cutting work area (22) is 1.8-2mm.

3. The low-temperature plasma surgical electrode tip for precise operation according to claim 1, characterized in that: The thickness t of the cutting work area (22) is 0.3-0.9 mm.

4. The low-temperature plasma surgical electrode tip for precise operation according to claim 1, characterized in that: The cutting angle α of the cutting edge at the front end of the cutting work area (22) is 27-33°.

5. The low-temperature plasma surgical electrode tip for precise operation according to claim 1, characterized in that: The width d of the side blade (221) is 0.5-1.0 mm.

6. The low-temperature plasma surgical electrode tip for precise operation according to claim 1, characterized in that: The outer diameter SR0 of the micro-convex spherical point (211) is 0.15-0.3mm, the height h0 of the micro-convex spherical point (211) is 0.4-0.6mm, and the center distance L0 between two adjacent micro-convex spherical points (211) is 2-3 times SR0.

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