Electrosurgical instrument based on smokeless electrode

An electrosurgical instrument and electrode technology, applied in the field of medical equipment, can solve the problems of wasting manpower, inducing mutation, and blocking the vision of the chief surgeon.

Pending Publication Date: 2021-07-30
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Surgical smoke has cytotoxicity and the possibility of inducing mutations. It may also contain HIV, human papilloma and other infectious viruses and bacteria. Long-term exposure of medical staff to such pollutants can easily threaten their health
[0003] At present, there are two main protective measures against surgical smoke in the operating room, one is to use smoke extraction equipment to extract the smoke generated; the other is to do personal protection, wear goggles and N95 or N100 protective masks; however, these two method has some shortcomings
At present, operating rooms in most areas in China use smoke extraction equipment to remove surgical smoke. The specific method is that the surgical assistant uses the smoke suction head to follow the leading doctor's surgical instruments to suck the smoke. The problems of this method are as follows: waste of manpower, assistants It is necessary to hold the suction device and follow the surgeon to suck out the smoke, and cannot coope

Method used

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  • Electrosurgical instrument based on smokeless electrode
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  • Electrosurgical instrument based on smokeless electrode

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preparation example Construction

[0039] (2) The preparation of carbon nanotubes also adopts the preparation method of chemical vapor deposition, using 300nm thick silicon dioxide as the growth substrate, using Fe / MgO as the catalyst, the carbon source is acetylene and benzene, the growth temperature is 800 ° C, and the pressure is 1 atm , the growth time is 20-30min, and the thickness is 50nm.

[0040] (3) The preparation method of metal (Pt, Al, Au, Ag, Ni, Fe, Sn, Mn, W, Cu, Ti, Mo, Zn or a combination of several) nanowires is a hydrothermal method, Taking the preparation of copper nanowires as an example, 1.7g of copper chloride dihydrate, 4g of glucose, and 14g of hexadecylamine were dissolved in water, stirred for 12 hours, heated at 120°C for 6 hours, cooled and centrifuged, and dispersed in isopropyl Alcohol solution to obtain copper nanowires.

[0041] (4) The preparation method of silicon carbide, diamond, and titanium nitride is magnetron sputtering. Taking the preparation of silicon carbide as an ...

Embodiment 1

[0045] An electrosurgical instrument based on graphene-coated smokeless electrodes, such as figure 1 As shown, the high thermal conductivity, anti-sticking, and high temperature resistant graphene coating is covered on the outer surface of the electrode head of the entire electrosurgical instrument (high-frequency electric knife), as follows:

[0046] First, large-area, high-quality graphene with a thickness of 100 layers was grown by chemical vapor deposition. Then, the multi-layer graphene is transferred and covered on the upper and lower surfaces of the electrode blade by wet transfer, spin coating and other film transfer technologies. The schematic diagram of wet transfer is shown in the attached figure 2 shown. Among them, the size of graphene: the length and width are consistent with the size and shape of the electrode; the thickness of graphene is 70 nanometers (100 layers of graphene are coated on the upper and lower surfaces of the electrode), and the thickness of n...

Embodiment 2

[0050] For electrosurgical instruments based on carbon nanotube-coated smokeless electrodes, high thermal conductivity, anti-sticking, and high-temperature-resistant carbon nanotube coatings cover the entire outer surface of the electrode head of the electrosurgical instrument (high-frequency electric knife), as follows :

[0051] First, a 5 cm × 5 cm, 50 nm thick carbon nanotube film was grown by chemical vapor deposition, and the shape of the carbon nanotube film was cut with scissors to be consistent with the size and shape of the electrode tip. Then, the carbon nanotube film is transferred and covered on the upper and lower surfaces of the electrode blade by wet transfer technology.

[0052] The carbon nanotube coating has a thickness of 100 nanometers (a 50 nanometer thick carbon nanotube film is transferred on the upper and lower surfaces of the electrode), and the nanometer-sized thickness helps to strengthen the interaction between the coating and the substrate and red...

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Abstract

The invention provides an electrosurgical instrument based on a smokeless electrode, which belongs to the field of medical equipment, and a coating with high thermal conductivity, low friction coefficient, high temperature resistance and high flexibility is coated on a tool bit at the tail end of a metal electrode of a traditional electrosurgical instrument by adopting a growth process. The material of the coating comprises one of graphene, a carbon nanotube, a metal nanowire, silicon carbide, diamond and a titanium nitride material; the coating method comprises the processes of wet transfer, spin coating, dispensing, deposition and the like. According to the electrosurgical instrument provided by the invention, the coating material of the electrosurgical instrument can realize uniform heating of human tissues and avoid adhesion of scorched tissues, so that operation smoke is eliminated, the harm of the smoke to health of patients and medical personnel is avoided, meanwhile, the time spent on pumping and discharging the smoke in the operation process can be avoided, and the operation safety is improved; the structure is simple, operation is convenient, and real-time performance is high; and the cost is low.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to an electrosurgical instrument for eliminating surgical smoke. Background technique [0002] In recent years, electrosurgical instruments such as high-frequency electrosurgical pen, LEEP knife, and endoscopic electric cutter have been widely used clinically. They heat tissue through the high-frequency current generated by the electrode tip to achieve the purpose of cutting and coagulating body tissue. However, during the use of electrosurgical instruments, the high temperature will produce smoke-like substances, which are called surgical smoke, which is caused by the incomplete combustion of protein, fat and other components of human tissue. Surgical smoke is an air pollutant, and its chemical composition is polycyclic aromatic hydrocarbons, benzene, acrylonitrile, hydrogen cyanide, and carbon monoxide. The hydrogen cyanide released by acrylonitrile is colorless and t...

Claims

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Application Information

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IPC IPC(8): A61B18/12A61B18/14C23C14/06C23C14/35C23C16/26
CPCA61B18/12A61B18/1206A61B18/14A61B2018/00095A61B2018/0013A61B2018/1412C23C14/0611C23C14/0635C23C14/0641C23C14/35C23C16/26
Inventor 曹暾贾婧媛杨增强廉盟苏莹
Owner DALIAN UNIV OF TECH
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