Plasma operation electrode coating tool bit edging device

Abstract

The utility model discloses a plasma operation electrode coating cutter head edging device, which belongs to the technical field of operation electrode edging devices and comprises an insulating base, a mounting groove is arranged on the insulating base, a binding post A is arranged in the mounting groove, a conductive groove is arranged on the lateral side of the mounting groove, and a conductive seat is slidably arranged on the lateral wall of the conductive groove. A conductive probe is arranged on the side of the conductive seat. The utility model is used for solving the problem of incomplete edging or supersaturated edging of the cutting edge of the tool bit.

Description

Technical Field

[0001] The utility model belongs to the technical field of surgical electrode sharpening devices, in particular to a plasma surgical electrode coating blade sharpening device. Background Art

[0002] Plasma surgical electrodes are primarily used for tissue cutting and hemostasis by electrocoagulation. They are widely used in clinical practice and their application is growing. They have dual functions of cutting and coagulation. Currently, existing plasma surgical electrodes are used not only in open-view surgery but also in endoscopic procedures such as laparoscopy.

[0003] The principle of plasma technology for cutting and coagulation is that a main generator generates high-frequency, high-voltage pulses, which are transmitted through the electrode port to the cutting edge of the electrode blade. A localized, high-voltage electric field is formed between the blade tip and the tissue being cut. The electric field intensity reaches the threshold for plasma generation, ionizing the electrolytes in the air and tissue near the blade tip, generating a plasma avalanche effect (the ions of plasma are mainly oxygen ions OH-, hydrogen ions H+, Na+, Cl-, etc.) and electron transitions. The plasma is accelerated in the strong electric field, gaining sufficient kinetic energy. The kinetic energy of the ions impacts tissue cells, breaking the molecular bonds between the cells, and achieving the effect of tissue cutting and hemostasis.

[0004] The insulating coating covering the surface of plasma surgical electrodes is a nano-water-based coating with very strong flow properties. It is difficult for thick coatings to stick to the blade edge. Therefore, after spraying, the coating thickness at the blade tip is thinner than that on other surfaces. However, the thin coating accumulated at the blade tip hinders the flow of charge, resulting in a weakened electric field at the blade tip, which cannot reach the threshold voltage required for plasma generation, affecting the cutting effect of the plasma surgical electrode.

[0005] In addition, due to the instability of the coating manufacturing process, several additional production processes will be added, which can easily lead to the blade being covered with more coating, forming a gap at the tip of the blade. The presence of the gap will increase the distance between the metal blade tip and the tissue, reduce the field strength at the tissue contact point, and affect the plasma cutting effect. In response to these current situations, many manufacturers currently use a coating sharpening method, which involves rubbing the blade edge with a rough file to remove the coating on the blade tip surface through friction. This method has the advantages of being easy to operate and low in price, but the workmanship is crude, the product qualification rate is low, and it is very easy to damage the coating. In addition, the amount of coating removal cannot be accurately determined, which can easily lead to "oversaturated sharpening" and reduce the field strength at the plasma generation point, affecting the smoothness of tissue cutting and increasing thermal damage to the tissue. Utility Model Content

[0006] In view of the above problems, the present invention provides a plasma surgical electrode coating blade sharpening device, which is used to solve the problem of incomplete or oversaturated sharpening of the blade edge.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A plasma surgical electrode coating blade sharpening device includes an insulating base, a mounting groove is provided on the insulating base, a terminal A is provided in the mounting groove, a conductive groove is provided on the side of the mounting groove, a conductive seat is slidably provided on the side wall of the conductive groove, and a conductive probe is provided on the side of the conductive seat.

[0009] As a further improvement of the above technical solution, the shape of the conductive groove is similar to the shape of the blade to be sharpened, wherein a roller skating guide rail is provided on the outside of the conductive groove, and the conductive seat is slidably set on the roller skating guide rail through a slider, and the shape of the roller skating guide rail is similar to the shape of the side wall of the conductive groove.

[0010] As a further improvement of the above technical solution, a terminal B is provided on the conductive seat, and the terminal B is electrically connected to the conductive probe. A tip is provided at one end of the conductive probe, and the tip of the conductive probe is located on the same horizontal plane as the cutting edge of the blade; the terminal A and the terminal B are respectively connected to the positive and negative poles of the power supply.

[0011] As a further improvement of the above technical solution, the distance between the tip of the conductive probe and the cutting edge of the cutter head is 100 μm-1000 μm; the thickness of the tip of the conductive probe is consistent with the curvature radius of the cutting edge of the cutter head.

[0012] As a further improvement of the above technical solution, the tip of the conductive probe is arc-shaped, and the thickness of the flat tip is consistent with the curvature radius of the cutting edge of the tool head.

[0013] As a further improvement of the above technical solution, the tip of the conductive probe is planar, and the thickness of the arc-shaped tip is consistent with the curvature radius of the cutting edge of the tool head.

[0014] As a further improvement of the above technical solution, the tip of the conductive probe is in a groove shape, and the thickness of the arc-shaped tip is consistent with the curvature radius of the cutting edge of the tool head.

[0015] As a further improvement of the above technical solution, the diameter of the terminal A is consistent with the diameter of the positioning hole at the tail of the cutter head.

[0016] As a further improvement of the above technical solution, one end of the mounting groove is connected to the conductive groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: since the thickness of the blade tip is relatively thin, the coating adhesion there is the weakest, the coating thickness is the thinnest, and the impedance is the lowest. According to the principle that charges tend to flow in the direction of low impedance, under the action of the electric field, the positive charges are oriented and enriched at the edge of the blade tip. The larger the electric field, the greater the kinetic energy of the charge, and the movement of the charge impacts the surface coating. When the kinetic energy reaches a certain level, the charge breaks through the coating to form a discharge, and the coating falls off due to the impact. Therefore, the thin coating at the tip is broken through the principle of instantaneous high-voltage discharge to the air, and the main chain of the coating is easily broken under the impact of the high-voltage electron wave, thereby causing the separation of the tip coating, realizing the conduction of the tip of the blade, and achieving the effect of sharpening. At the same time, since the thickness of the conductive probe tip is controlled, it is possible to avoid the situation of oversaturated sharpening caused by using a file for sharpening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the locally enlarged structure at point A in the middle.

[0020] Figure 3 for Figure 2 Schematic diagram of the locally enlarged structure at point B in the middle.

[0021] Figure 4 for Figure 2 Schematic diagram of the locally enlarged structure at point B in the middle.

[0022] Figure 5 Schematic diagram of the shape and structure of the conductive probe tip.

[0023] Figure 6 Schematic diagram of the interaction between the grooved probe and the blade tip.

[0024] In the figure: 1. Insulating base; 2. Mounting groove; 3. Conductive groove; 4. Skate rail; 5. Conductive seat; 6. Terminal A; 7. Terminal B; 8. Terminal B; 9. Conductive probe. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention. Example

[0026] A plasma surgical electrode coating blade sharpening device comprises an insulating base, a mounting groove provided on the insulating base, a terminal A provided in the mounting groove, a conductive groove provided on the side of the mounting groove, a conductive seat slidably provided on the side wall of the conductive groove, a conductive probe provided on the side of the conductive seat, the shape of the conductive groove being similar to the shape of the blade to be sharpened, a roller guide rail provided on the outside of the conductive groove, the conductive seat slidably provided on the roller guide rail via a slider, the shape of the roller guide rail being similar to the shape of the side wall of the conductive groove, a terminal B provided on the conductive seat, the terminal B being electrically connected to the conductive probe, a tip provided at one end of the conductive probe, the tip of the conductive probe being located on the same horizontal plane as the blade edge; the terminal A and the terminal B being connected to the positive and negative poles of a power supply respectively, the distance between the tip of the conductive probe and the blade edge being 100μm-1000μm; the thickness of the tip of the conductive probe being consistent with the curvature radius of the blade edge.

[0027] The insulating base is a supporting part of the entire device and plays a supporting role. The material of the insulating base can be rubber, ABS, PP, etc. The insulating base is made of insulating material to isolate the discharge of the rest of the blade; the installation groove is set on one side of the insulating base, which is used to fix the rear part of the cutter head, and the conductive groove is a space for the conductive seat to move. The shape of the conductive groove is consistent with the shape of the front part of the cutter head after being magnified in proportion; the roller skating guide rail is located outside the installation groove, and the roller skating guide rail serves as a track for the conductive seat to move. The conductive seat can slide on the roller skating guide rail. During the movement of the roller skating guide rail, the conductive seat gradually breaks the thin coating on various parts of the cutting edge of the cutter head; the shape of the roller skating guide rail is designed according to the shape of the cutter head. The roller skating guide rail designed in the utility model is U-shaped, and the conductive groove designed in the utility model is U-shaped; The conductive seat serves as a structural component of the conductive probe and the terminal B, and can be made of conductive materials such as stainless steel, copper and copper alloys, aluminum and aluminum alloys; the movement of the conductive probe is driven by the movement of the conductive seat; the terminal A and the terminal B can be made of conductive materials such as stainless steel, copper and copper alloys, aluminum and aluminum alloys, among which the tail end of the terminal A is fixed on the mounting groove of the insulating base, and the terminal A is used to limit the blade so that the blade head is located in the conductive groove. The terminal A serves as a power supply conduction terminal, connected to the positive pole of the power supply, and transmits the power supply voltage to the blade; the terminal B is connected to the negative pole of the power supply and serves as the terminal between the conductive seat and the power supply.

[0028] The conductive probe is made of high-melting-point tungsten and tungsten alloy materials and is pyramid-shaped. Its flat end is fixed to the conductive base, and the flat end and the conductive base maintain good conductivity. The probe tip and the blade tip remain on the same plane. The distance L between the probe tip and the blade tip is maintained in the range of 100 to 1000 μm. The thickness H of the probe tip is consistent with the curvature radius of the blade tip, maintained in the range of 1 to 5 μm; the probe tip and the blade head maintain a point-to-point contact discharge form, but the tip microstructure can be divided into three forms: flat, spherical, and grooved. Among them, the groove in the grooved structure matches the blade tip and is more suitable for the needs of sharpening.

[0029] As a preferred embodiment of the above embodiment, the tip of the conductive probe is arc-shaped, and the thickness of the flat tip is consistent with the curvature radius of the cutting edge of the blade.

[0030] As a preferred embodiment of the above embodiment, the tip of the conductive probe is planar, and the thickness of the arc-shaped tip is consistent with the curvature radius of the cutting edge of the blade.

[0031] As a preferred embodiment of the above embodiment, the tip of the conductive probe is in a groove shape, and the thickness of the arc-shaped tip is consistent with the curvature radius of the cutting edge of the blade.

[0032] As a preferred embodiment of the above embodiment, the diameter of the terminal A is consistent with the diameter of the positioning hole at the tail of the cutter head.

[0033] As a preferred embodiment of the above embodiment, one end of the mounting groove is connected to the conductive groove.

[0034] The specific working principle of this utility model is as follows: put the sprayed blade into the installation groove, insert the terminal A / positioning column into the blade positioning hole, and ensure that the tip of the conductive probe and the tip of the blade are on the same horizontal plane; move the conductive seat, circle around, check the consistency of the distance between the probe tip and the tip of the blade, and ensure that the distance is in the range of 100-1000μm; connect the positive pole of the power supply to the terminal A / positioning column, and the negative pole of the power supply to the terminal B; adjust the power supply to the corresponding voltage U, the voltage value is related to the coating thickness, please refer to the table below for details. After adjustment, stand by; wear anti-high-voltage gloves, turn on the power switch, slowly and evenly move the conductive seat, back and forth 2-3 cycles; close the switch power supply, remove the blade; use ultrasonic vibration cleaning, the vibration can wash out the coating particles that have been penetrated but not fallen off, dry after washing, and check the blade condition.

[0035]

[0036] The relationship between the voltage used for sharpening and the coating thickness is shown in the table above. Different coating thicknesses can be adapted by adjusting different voltages.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A plasma surgical electrode coating blade sharpening device, characterized in that: It includes an insulating base, a mounting groove is provided on the insulating base, a terminal A is provided in the mounting groove, a conductive groove is provided on the side of the mounting groove, a conductive seat is slidably provided on the side wall of the conductive groove, and a conductive probe is provided on the side of the conductive seat.

2. The plasma surgical electrode coating blade sharpening device according to claim 1, characterized in that: The shape of the conductive groove is similar to that of the blade to be sharpened, wherein a roller guide rail is provided outside the conductive groove, and the conductive seat is slidably arranged on the roller guide rail through a slider, and the shape of the roller guide rail is similar to that of the side wall of the conductive groove.

3. The plasma surgical electrode coating blade sharpening device according to claim 1, characterized in that: A terminal B is provided on the conductive seat, and the terminal B is electrically connected to the conductive probe. A tip is provided at one end of the conductive probe, and the tip of the conductive probe is located on the same horizontal plane as the cutting edge of the blade; the terminal A and the terminal B are respectively connected to the positive and negative poles of the power supply.

4. The plasma surgical electrode coating blade sharpening device according to claim 3, characterized in that: The distance between the tip of the conductive probe and the cutting edge of the cutter head is 100 μm-1000 μm; the thickness of the tip of the conductive probe is consistent with the curvature radius of the cutting edge of the cutter head.

5. The plasma surgical electrode coating blade sharpening device according to claim 4, characterized in that: The tip of the conductive probe is in an arc shape, and the thickness of the flat tip is consistent with the curvature radius of the cutting edge of the blade.

6. The plasma surgical electrode coating blade sharpening device according to claim 4, characterized in that: The tip of the conductive probe is planar, and the thickness of the arc-shaped tip is consistent with the curvature radius of the cutting edge of the blade.

7. The plasma surgical electrode coating blade sharpening device according to claim 4, characterized in that: The tip of the conductive probe is in a groove shape, and the thickness of the arc-shaped tip is consistent with the curvature radius of the cutting edge of the blade.

8. The plasma surgical electrode coating blade sharpening device according to claim 1, characterized in that: The diameter of the terminal A is consistent with the diameter of the positioning hole at the tail of the cutter head.

9. The plasma surgical electrode coating blade sharpening device according to claim 1, characterized in that: One end of the mounting groove is communicated with the conductive groove.

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