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A kind of preparation method of high transmittance anti-fog coating and laparoscope

A high light transmittance, anti-fog coating technology, applied in coatings, metal material coating technology, surgery, etc., can solve problems such as few researches, achieve elimination of diffuse scattering, increase visible light transmittance, and maintain transparency sexual effect

Active Publication Date: 2021-06-29
XIANGYA HOSPITAL CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the coating on the surface of the laparoscope needs to meet the four requirements of anti-fog, transparency, high light transmittance, and non-toxic and harmless. For this requirement, there are very few researches on the existing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The laparoscopic lens is used as the substrate, and the substrate is pretreated. The pretreatment includes grinding, degreasing, cleaning and drying. Among them, 400#, 600# and 800# sandpaper are used for grinding, and 15% of the oil is used for degreasing. Sodium carbonate + 10% sodium hydroxide solution, cleaning with deionized water and ultrasonic cleaning, drying in a protective atmosphere (such as N 2 ) under.

[0018] Put the dried substrate into a magnetron sputtering coating machine, use the AlSi composite target (the atomic content of Si in the composite target is 15%) as the sputtering source, oxygen and argon as the reaction gases, and Sputtering deposited Al on the bottom surface 2 o 3 +SiO2 2 Composite coating. Among them, oxygen accounts for 40% of the total gas, and the background vacuum is 5×10 -5 Pa, oxygen flow rate 20sccm, argon flow rate 30sccm, substrate temperature 200°C, sputtering pressure 2.0Pa, sputtering power 80W.

[0019] to Al 2 o 3...

Embodiment 2

[0022] The laparoscopic lens is used as the substrate, and the substrate is pretreated. The pretreatment includes grinding, degreasing, cleaning and drying. Among them, 400#, 600# and 800# sandpaper are used for grinding, and 15% of the oil is used for degreasing. Sodium carbonate + 10% sodium hydroxide solution, cleaning with deionized water and ultrasonic cleaning, drying in a protective atmosphere (such as N 2 ) under.

[0023] Put the dried substrate into a magnetron sputtering coater, use the AlSi composite target (the atomic content of Si in the composite target is 22%) as the sputtering source, and oxygen and argon as the reaction gases. Sputtering deposited Al on the bottom surface 2 o 3 +SiO2 2 Composite coating. Among them, oxygen accounts for 40% of the total gas, and the background vacuum is 5×10 -5 Pa, oxygen flow rate 20sccm, argon flow rate 30sccm, substrate temperature 200°C, sputtering pressure 2.0Pa, sputtering power 80W.

[0024] to Al 2 o 3 +SiO2 2...

Embodiment 3

[0027] The laparoscopic lens is used as the substrate, and the substrate is pretreated. The pretreatment includes grinding, degreasing, cleaning and drying. Among them, 400#, 600# and 800# sandpaper are used for grinding, and 15% of the oil is used for degreasing. Sodium carbonate + 10% sodium hydroxide solution, cleaning with deionized water and ultrasonic cleaning, drying in a protective atmosphere (such as N 2 ) under.

[0028] The dried substrate was put into a magnetron sputtering coating machine, the AlSi composite target (the atomic content of Si in the composite target was 27%) was used as the sputtering source, and oxygen and argon were used as the reaction gases. Sputtering deposited Al on the bottom surface 2 o 3 +SiO2 2 Composite coating. Among them, oxygen accounts for 40% of the total gas, and the background vacuum is 5×10 -5 Pa, oxygen flow rate 20sccm, argon flow rate 30sccm, substrate temperature 200°C, sputtering pressure 2.0Pa, sputtering power 80W.

...

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Abstract

The invention discloses a method for preparing an anti-fog coating with high light transmittance and a laparoscope. Two kinds of transparent coating materials are selected to prepare Al 2 o 3 +SiO2 2 Composite coating, the composite coating has a very small contact angle with water and has excellent hydrophilic properties, making it difficult for the water droplets that gather on the surface of the laparoscope due to cold to form microspheres, but form a layer of water film, and then The diffuse scattering of light is eliminated, the transparency of the laparoscope surface is maintained, and the anti-fog effect is achieved. Furthermore, the visible light transmittance of a single aluminum oxide coating is improved by compounding the two materials, so that the imaging of the laparoscope is clearer and more accurate.

Description

technical field [0001] The invention relates to the field of anti-fog coatings with high light transmittance, in particular to a preparation method of anti-fog coatings with high light transmittance for laparoscopes. Background technique [0002] Laparoscope is a very important medical device in surgery. However, when using electric knife, ultrasonic knife and other instruments in a small space, the rapid increase of local air temperature may cause the laparoscopic lens to fog. For the problem of fogging, one solution in the prior art is to apply an anti-fog coating. Since the laparoscope directly enters the human body and is in contact with tissues and organs, this requires that the coating material must be non-toxic and harmless. At the same time, the laparoscope needs to provide doctors with clear image vision. Therefore, the anti-fog coating must be transparent and requires a high visible light transmittance. That is to say, the coating on the surface of the laparoscop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/35C23C14/10C23C14/08C23C14/58A61L31/14A61L31/08
CPCA61L31/088A61L31/14C23C14/0036C23C14/081C23C14/10C23C14/35C23C14/5806
Inventor 肖瑶林嘉晏谭玉勇赵杰欧阳锡武
Owner XIANGYA HOSPITAL CENT SOUTH UNIV
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