CN217138188U

CN217138188U - Bipolar ultrasonic cutter head

Info

Publication number: CN217138188U
Application number: CN202122399009.2U
Authority: CN
Inventors: 邱学文; 董伟
Original assignee: Wuhan Banbiantian Medical Technology Development Co Ltd
Current assignee: Wuhan Banbiantian Medical Technology Development Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-08-09
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a bipolar supersound cutter head, its base member comprises cutting edge portion, sword back portion, cutter arbor connecting portion, and sword back portion and cutter arbor connecting portion coating have the coating of preventing heat dissipation. The utility model provides a bipolar ultrasonic cutter tool bit can avoid the tool bit to glue glutinous normal tissue on every side on the one hand, and on the other hand enables the tool bit energy and concentrates on the cutting edge, improves cutting efficiency, just the utility model discloses the anti-heat dissipation coating of preparing on bipolar ultrasonic cutter tool bit is difficult for droing.

Description

Bipolar ultrasonic cutter head

Technical Field

The utility model relates to the technical field of medical equipment, more specifically relates to a bipolar supersound cutter tool bit.

Background

The ultrasonic knife comprises main components such as a host, a handle, a knife head, a pedal plate and the like. The handle is provided with a transducer which converts high-frequency electric energy provided by the main generator into ultrasonic mechanical vibration energy, transmits the ultrasonic energy to the cutter head and simultaneously transmits the ultrasonic energy, the thermal effect of the mechanical vibration is generated to break tissue protein hydrogen bonds, the protein is denatured and solidified, and particularly, the mechanical energy and the thermal energy generated by the transducer are utilized to carry out solidification, hemostasis, cutting and the like on the tissue, and the vibration frequency of the cutter head is about 55.5 kHz. The ultrasonic knife head has two blades, one is the working blade for applying ultrasonic wave, and the other blade has a white protecting pad with insection. The white protective pad is used for better clamping tissues to enhance the coagulation effect, and the working leaves can be directly cut like an electric knife. A high-frequency electric knife is an electric surgical instrument for replacing a mechanical scalpel to cut tissues. The tissue is heated when the high-frequency high-voltage current generated by the tip of the effective electrode contacts with the body, so that the separation and coagulation of the body tissue are realized, and the purposes of cutting and hemostasis are achieved.

CN 204562361U discloses a take bipolar ultrasonic knife utensil of high frequency hemostasis function, with ultrasonic knife and high frequency electrotome set to a naked tool bit, ultrasonic energy and high frequency electric energy are exported simultaneously, can improve the cutting efficiency to the tissue, satisfy the blood coagulation function simultaneously. At present, the bipolar ultrasonic cutter has the problems that the cutter head is easy to cause poor heat diffusion due to overhigh energy output, surrounding normal tissues are injured under most conditions, and the phenomenon that the cutter head is adhered to the tissues appears.

SUMMERY OF THE UTILITY MODEL

To the problem that the bipolar supersound cutter head of taking the high frequency function of stanching in the prior art glues glutinous tissue, the utility model provides a coating prevents bipolar supersound cutter head of heat dissipation coating avoids the cutter head to glue glutinous normal tissue on every side on the one hand, and on the other hand makes the cutter head energy concentrate to the cutting edge, improves cutting efficiency.

The utility model discloses a following technical scheme realizes:

in a first aspect, the utility model provides a bipolar ultrasonic cutter tool bit, its base member comprises cutting edge portion, sword back portion, cutter arbor connecting portion, and sword back portion and cutter arbor connecting portion coating have the heat dissipation coating of preventing. Technical scheme more than adopting, the utility model provides a bipolar supersound cutter tool bit can make the tool bit energy concentrate the cutting edge on, improves cutting efficiency.

On the basis of the technical scheme, the heat dissipation prevention coating consists of a polytetrafluoroethylene layer and a polytetrafluoroethylene-perfluoroalkyl vinyl ether copolymer layer from inside to outside. Technical scheme more than adopting, the utility model provides a bipolar supersound cutter tool bit can avoid the tool bit to glue normal tissue on every side.

On the basis of the technical scheme, the surface of the base body of the connecting part of the cutter back part and the cutter bar is a sand surface with the roughness of 2.0-3.5 mu m. Technical scheme more than adopting, the utility model provides a bipolar supersound cutter tool bit can avoid the tool bit to glue normal tissue on every side.

On the basis of the technical scheme, the thickness of the polytetrafluoroethylene layer is 20-100 mu m; the thickness of the polytetrafluoroethylene-perfluoroalkyl vinyl ether copolymer layer is 100 to 500 mu m. Technical scheme more than adopting, the utility model provides a bipolar ultrasonic cutter tool bit can further prevent the energy and scatter and disappear, makes the tool bit energy concentrate on the cutting edge, improves cutting efficiency.

On the basis of the technical scheme, the width of the knife edge part is 0.8-1.5 mm, and the length of the knife edge part is 8-13 mm. Technical scheme more than adopting, the utility model provides a bipolar ultrasonic cutter tool bit can further prevent the energy and scatter and disappear, makes the tool bit energy concentrate on the cutting edge, improves cutting efficiency.

On the basis of the technical scheme, the tool bit of the bipolar ultrasonic tool is a flat tool bit, the blade part is positioned on one side edge of the flat tool bit, and the tool back part is positioned on the other side edge of the flat tool bit.

On the basis of the technical scheme, the cutter bar connecting part and the cutter bar are integrally formed.

On the basis of the technical scheme, the heat dissipation preventing coating of the knife back part and the knife bar connecting part is integrally formed.

On the basis of the technical scheme, the base body is a titanium alloy base material.

On the basis of the technical scheme, the bipolar ultrasonic cutter is a bipolar ultrasonic cutter with a high-frequency hemostasis function.

Compared with the prior art, the utility model, have following advantage:

the utility model arranges the heat-dissipation-preventing coating on the cutter head, thereby reducing the heat diffusion of the cutter head of the ultrasonic cutter and concentrating the energy; and avoided the back of the knife portion to hinder to normal tissue and glue glutinous tissue, the utility model discloses the heat dissipation coating of preventing of preparation on the tool bit is very firm, even under high frequency vibration, still is difficult for droing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of a bipolar ultrasonic tool;

FIG. 2 is a schematic view of a tool tip spray coating;

the cutting tool comprises a tool bar 1, a tool bit 2, a cutting edge 21, a tool bar connecting part 22 and a tool back 23.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the following embodiments, when the coating is prepared, in order to improve the adhesive force of the coating, the surface of the cutter bar cannot be polluted, and the cutter head has no oil stain; the knife edge part can be corroded without being protected intentionally, but before the two steps of spraying primer and spraying finish paint, the knife edge part needs to be scraped off firstly so as to wipe off the uncured primer and finish paint, and a hard plastic is used for wrapping a dust-free cloth to wipe out a notch shape.

In the following embodiments, the tool bar of a knife in a Youli card (G55U06993) is used as an initial processing object; the adopted acidic sand surface agent comprises 25% of organic acid, 10% of inorganic acid, 8% of accelerant, 12% of dispersing agent, 2% of auxiliary agent and the balance of water.

Example 1

1. Immersing the tool bit on the tool bar in an acid sand surface agent at room temperature for 5 minutes, taking out, immediately washing with clear water, removing residual solution, and measuring the surface roughness (Ra) of the tool bit substrate to be 3.0 mu m; after the residual solution is removed, the surface of the cutter head is soaked by using a detergent (the detergent has the function of removing oil stains on the surface of the cutter head and preventing a plating layer from falling off, currently, washing powder is used and is soaked for 10 minutes at the temperature of 40-50 ℃), rinsed by using clear water and dried in the air, and grease and dust on the surface of the cutter head are removed;

2. placing the cutter bar on a fixed frame, and waiting for spraying of the primer; note that to prevent the surface from oxidizing and losing adhesion, the tool bit must be sprayed with a water-based primer within 30 minutes after the treatment with the acid sanding agent. Spraying water-based primer: the primer spraying air gun with the phi of 1.0mm is connected with an air pipe, polytetrafluoroethylene (FTFE) water-based primer is uniformly shaken and poured into a primer spraying air gun auxiliary container, a nozzle is adjusted to be 30cm away from a cutter bar, the pressure of a spray gun is 0.3Mpa until the aerosol concentration of the primer is proper when the spray gun sprays, the spray gun is used for directly spraying for 5 seconds, the spray gun is kept still by aligning with the cutter bar when spraying, the cutter bar is rotated for 3 circles at a constant speed, a cutter head is uniformly sprayed with black water-based primer, and a hard plastic is immediately used for wrapping dust-free cloth to wipe out a gap. And (3) putting the mixture into an oven for heating and curing, wherein the temperature is 180 ℃ for 20 minutes, taking the mixture out of the oven, naturally cooling the mixture to room temperature, and waiting for spraying of finish coat (PFA).

3. Spraying finish Paint (PFA): the finish paint component is tetrafluoroethylene perfluoroalkyl vinyl ether copolymer (PFA), and the finish paint spraying process is the same as the step 2. And (3) sintering finish paint: the temperature of the oven is set to 380 ℃, the temperature needs to be slowly raised in the temperature raising process, the temperature is raised to 380 ℃ from room temperature in about 30min, and the temperature is kept for 1 hour (not less than 1 hour) after the set temperature is reached, and then the material is discharged from the oven and naturally cooled to the room temperature.

4. The part to be polished is polished on a wool wheel to form a knife edge part with the length of 13mm and the depth of 1mm, and the figure is shown in detail in figure 1.

As shown in fig. 1, in the bipolar ultrasonic cutting tool bit prepared in this embodiment, the substrate comprises a cutting edge portion, a back portion and a tool bar connecting portion, the back portion and the tool bar connecting portion are coated with a heat dissipation preventing coating, the heat dissipation preventing coating comprises a polytetrafluoroethylene layer and a polytetrafluoroethylene-perfluoroalkyl vinyl ether copolymer layer from inside to outside, and the thickness of the polytetrafluoroethylene layer is 20 to 100 μm; the thickness of the polytetrafluoroethylene-perfluoroalkyl vinyl ether copolymer layer is 100 to 500 mu m, the width of the blade part is 0.8 to 1.5mm, and the length is 8 to 13 mm.

Comparative example 1

The smooth, bare tool holder was polished to a blade length of 13mm and a depth of 1mm, as shown in fig. 1.

Comparative example 2

Unlike example 1, this comparative example does not include step 1, and the rest of the steps are the same as example 1, that is, the entire tool bar is not soaked in the sand surface agent for treatment, and the FTFE layer and the PFA layer are directly and sequentially sprayed on the tool bar with a smooth surface.

Comparative example 3

Unlike example 1, this comparative example does not include step 2, and the rest of the procedure is the same as example 1, i.e., the FTFE layer is not sprayed on the sand surface, but the PFA layer is directly sprayed.

Comparative example 4

Unlike example 1, this comparative example does not include step 3, and the remaining steps are the same as example 1, i.e., no PFA layer is sprayed on the outside of the FTFE layer.

Test results

Meat cutting experiments were performed using the tips prepared in the above examples and comparative examples, recorded every 30 minutes for three hours, with the ultrasound set at the maximum gear (5 th) and the dipole set at 70 w. The effect record is shown in table 1:

TABLE 1 meat-cutting test results

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bipolar ultrasonic cutter head, comprising: the base body consists of a knife edge part, a knife back part and a knife bar connecting part, wherein the knife back part and the knife bar connecting part are coated with a heat dissipation prevention coating; the anti-heat dissipation coating consists of a polytetrafluoroethylene layer and a polytetrafluoroethylene-perfluoroalkyl vinyl ether copolymer layer from inside to outside.

2. The bipolar ultrasonic cutter head of claim 1, wherein: the surface of the substrate of the connecting part of the knife back part and the knife bar is a sand surface with the roughness of 2.0-3.5 mu m; the thickness of the polytetrafluoroethylene layer is 20-100 mu m.

3. The bipolar ultrasonic cutter head of claim 1, wherein: the thickness of the polytetrafluoroethylene-perfluoroalkyl vinyl ether copolymer layer is 100-500 mu m.

4. The bipolar ultrasonic cutter head of claim 1, wherein: the width of the knife edge part is 0.8-1.5 mm, and the length is 8-13 mm.

5. The bipolar ultrasonic cutter head of claim 1, wherein: the bipolar ultrasonic cutter head is a flat cutter head, the blade part is positioned on one side edge of the flat cutter head, and the cutter back part is positioned on the other side edge of the flat cutter head.

6. The bipolar ultrasonic cutter head of claim 1, wherein: the cutter bar connecting part and the cutter bar are integrally formed.

7. The bipolar ultrasonic cutter head of claim 1, wherein: the heat dissipation prevention coating of the knife back part and the knife bar connecting part is integrally formed.

8. The bipolar ultrasonic cutter head of claim 1, wherein: the matrix is a titanium alloy base material.

9. The bipolar ultrasonic cutter head of claim 1, wherein: the bipolar ultrasonic cutter is a bipolar ultrasonic cutter with a high-frequency hemostasis function.