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Non-sticky electrosurgical instrument electrode

An electrosurgical instrument and electrode technology, applied in the field of medical equipment, can solve the problems of high cost, poor anti-sticking effect of the coating, easy damage of the coating, etc.

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

[0010] The purpose of the present invention is to make up for the following defects in the anti-sticking design technology of the existing high-frequency electrosurgical instrument electrodes: 1) the anti-sticking effect of the coating is not good, 2) the conductivity is not enough, 3) the coating is easily damaged, 4) The cost is too high

Method used

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preparation example Construction

[0044] (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.

[0045] (3) Carbon nanofibers are self-assembled from carbon nanotubes. The diameter of the fiber is about 50nm, the length is 1-15 microns, and the density is 2.1g / cm 3 .

[0046] (4) Metal (or alloy) nanoparticles are prepared by high-temperature annealing of thin films. First, a film with a thickness of 10-100 nm is grown by magnetron sputtering, and then annealed at a high temperature of 400-1000 ° C to obtain a metal with a diameter of 50-200 nm ( or alloy) nanoparticles.

[0047] Finally, the coating material is applied to the cleaned electrode surface by one of thin film wet transfer and deposition to form non-adhesive electrosurgical i...

Embodiment 1

[0051] A non-adhesive high-frequency electrotome electrode based on graphene materials, such as figure 1 , 2 As shown, the highly conductive, non-adhesive graphene coating covers the entire outer surface of the stainless steel electrode tip, and the preparation method of the coating is as follows:

[0052] 1) Use chemical vapor deposition material growth process to grow large-area graphene with a thickness of 100 layers, such as image 3 shown. The selected substrate material is nickel foil with a thickness of 300 nanometers. Put the nickel foil in acetone, isopropanol, ethanol, and deionized water for ultrasonication, place it in dilute nitric acid for 15 minutes, rinse, and dry it with nitrogen; put the nickel foil immediately Into the CVD chamber, and the chamber is evacuated to 500mTorr.

[0053] 2) The growth temperature is 1000°C, the raw material is a mixture of methane and hydrogen, and the gas flow rates are 35 sccm and 2 sccm respectively, and a large area (10 cm ...

Embodiment 2

[0059] A non-adhesive high-frequency electrosurgical electrode based on carbon nanotube materials. The high-conductivity, anti-adhesive carbon nanotube coating covers the entire outer surface of the stainless steel electrode end cutter head. The preparation method of the coating is as follows:

[0060] 1) Using the preparation method of chemical vapor deposition, 300nm thick silicon dioxide is used as the growth substrate, Fe / MgO is used as the catalyst, the carbon source is acetylene and benzene, the growth temperature is 800°C, the pressure is 1atm, and the growth time is 20-30min .

[0061] 2) growing a large-area (5 cm x 5 cm) carbon nanotube film with a clean surface of 50 nm in thickness.

[0062] 3) Use scissors to cut the carbon nanotube film into a rectangular structure with a width slightly wider than the electrode blade. The specific dimensions are: length 1.5 cm, width 0.25 cm (electrode blade length 1.5 cm, width 0.2 cm).

[0063] 4) Through the film wet transfer...

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Abstract

The invention provides a non-sticky electrosurgical instrument electrode, and belongs to the field of medical instruments. The electrode is formed by improving electrodes of electrosurgical instruments such as a high-frequency unipolar electrotome and a bipolar electrotome which are commonly used in medical science at present, and a film material coating with anti-sticking, high-conductivity and wear-resistant properties is coated on a knife head at the tail end of the surface of a metal electrode of a traditional electrosurgical instrument by adopting a material growth process. The film material coating is one of graphene, a carbon nano tube, carbon fiber, a fiber-metal nano particle composite material and a fiber-alloy nano particle composite material. On the basis of not influencing the normal work and cutting efficiency of the electrode of the electrosurgical instrument, the function of reducing the adhesion of human tissues on the surface of the electrode is realized; compared with a traditional electrosurgical instrument electrode, the electrode is not prone to adhering to human tissue in the using process, damage is small, an electrosurgical instrument or an instrument electrode does not need to be frequently replaced, and operation safety is improved; the structure is simple, cost is low and manufacturing is easy.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to an electrosurgical instrument electrode covered with a non-adhesive coating. Background technique [0002] Electrosurgical instruments refer to the surgical equipment that heats the tissue when the high-frequency current generated by the tip of the electrode contacts the body to achieve the separation and coagulation of the body tissue, so as to achieve the purpose of cutting and hemostasis, including high-frequency electric knife, radio frequency Knife, ion knife, etc. However, the electrodes of electrosurgical instruments have a high temperature during operation, and the thermal damage to tissues is usually large, which often causes eschar in clinical practice. If the eschar adheres to the electrode of the instrument, it will not only affect the continued use of the instrument, but also sometimes cause the tissue that has stopped bleeding to be destroyed when the i...

Claims

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Application Information

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IPC IPC(8): A61B18/14C23C14/35C23C14/14C23C14/58C23C16/26C23C16/01B82Y30/00B82Y40/00
CPCA61B18/14C23C14/35C23C14/14C23C14/5806C23C14/0005C23C16/26C23C16/01B82Y30/00B82Y40/00A61B2018/1412A61B2018/00107A61B2018/00125
Inventor 曹暾贾婧媛杨增强廉盟苏莹
Owner DALIAN UNIV OF TECH
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