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Detection method for antibacterial surface of grating structure

A grating structure and detection method technology, applied in the field of medical devices, can solve the problems of expensive equipment, the inability to ensure the safety of the antibacterial surface of the grating structure, and the inability to ensure safety, so as to improve safety and overcome the inability to quickly detect the antibacterial structure of the grating structure Effect of surface structure and degree of contamination

Active Publication Date: 2021-08-10
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when there are structural flaws on the antibacterial surface of the grating structure, it is still easy to adhere to bacteria during use, and the existing technology is only magnified by scanning electron microscopy. It is well known that the operation of the scanning electron microscope is complicated and the equipment is expensive, so the antibacterial surface of the grating structure does not It is not easy to be detected quickly, which makes it impossible to ensure the safety of the grating structure antibacterial surface
Or, whether the antibacterial surface of the grating structure is contaminated before use cannot be quickly detected, and the safety of use cannot be ensured, resulting in surgical risks

Method used

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  • Detection method for antibacterial surface of grating structure

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Experimental program
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Effect test

Embodiment 1

[0031] This embodiment discloses a detection method for an antibacterial surface of an amorphous alloy grating structure, which includes the following steps,

[0032] S1: preparing an antibacterial surface with an amorphous alloy grating structure, this step includes:

[0033] S11: Use diamond polishing abrasive grains with a particle size of 0.5μm, and then polish the surface of the amorphous alloy at a line speed of 1.5m / s and a pressure of 0.3MPa. The polishing time is 30min. The surface roughness of the polished amorphous alloy is Ra <0.1μm;

[0034] S12: Using an ultrafast laser to irradiate the surface of the amorphous alloy polished by S11 once or multiple times, wherein the wavelength of the ultrafast laser is 200nm, the pulse width is 100fs, the frequency is 1kHz, the power is 0.1W, and the scanning speed is 10mm / s, making the surface of the amorphous alloy grating structure;

[0035] S13: First use absolute ethanol to ultrasonically clean the surface of the amorph...

Embodiment 2

[0040] This embodiment discloses a detection method for an antibacterial surface of an amorphous alloy grating structure, which includes the following steps,

[0041] S1: preparing an antibacterial surface with an amorphous alloy grating structure, this step includes:

[0042] S11: Use diamond polishing abrasive grains with a particle size of 0.25 μm, and then polish the surface of the amorphous alloy at a line speed of 5 m / s and a pressure of 2.3 MPa. The polishing time is 30 minutes. The surface roughness of the polished amorphous alloy is Ra< 0.1μm;

[0043] S12: The surface of the amorphous alloy polished by S11 is irradiated once or multiple times with an ultrafast laser, wherein the wavelength of the ultrafast laser is 1200nm, the pulse width is 300fs, the frequency is 100kHz, the power is 50W, and the scanning speed is 2000mm / s, made the surface of the amorphous alloy grating structure;

[0044]S13: First use absolute ethanol to ultrasonically clean the surface of th...

Embodiment 3

[0049] This embodiment discloses a detection method for an antibacterial surface of an amorphous alloy grating structure, which includes the following steps,

[0050] S1: preparing an antibacterial surface with an amorphous alloy grating structure, this step includes:

[0051] S11: Use diamond polishing abrasive grains with a particle size of 0.3μm, and then polish the surface of the amorphous alloy at a line speed of 2.5m / s and a pressure of 0.9MPa. The polishing time is 30min. The surface roughness of the polished amorphous alloy is Ra <0.1μm;

[0052] S12: The surface of the amorphous alloy polished by S11 is irradiated once or multiple times with an ultrafast laser, wherein the wavelength of the ultrafast laser is 800nm, the pulse width is 500fs, the frequency is 50kHz, the power is 1W, and the scanning speed is 100mm / s, made the surface of the amorphous alloy grating structure;

[0053] S13: First use absolute ethanol to ultrasonically clean the surface of the amorphou...

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Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to a detection method for an antibacterial surface of a grating structure. According to the detection method for the antibacterial surface of the grating structure, the defect degree and the pollution degree of the antibacterial surface of a to-be-detected grating structure is judged according to the optical characteristics of the antibacterial surface of the grating structure under the condition that the incidence wavelength of 200-800nm of an ultraviolet spectrophotometer and by comparing the reflectivity of the antibacterial surface of the to-be-detected grating structure with the reflectivity of the antibacterial surface of a known grating structure with an incomplete grating structure and the reflectivity of the antibacterial surface of a known polluted grating structure with a complete grating structure, .

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a method for detecting an antibacterial surface with a grating structure. Background technique [0002] Unavoidable bacterial contamination during surgery, instrument contamination during clinical treatment is one of the main causes of infection. For implant surgery, tissue infection near the implant usually occurs after surgery, and in severe cases, the implant surgery will fail. At present, the use of medical devices with antibacterial functions can effectively reduce the risk of infection during clinical treatment. Among them, a number of studies have shown that processing a submicron-scale grating structure on the surface of the alloy can effectively reduce the bacterial adhesion rate on the surface of the material. [0003] However, when there are structural flaws on the antibacterial surface of the grating structure, it is still easy to adhere to bacteria during u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/352B08B3/08B08B3/12G01N21/33G01N21/94
CPCB23K26/352B08B3/08B08B3/12G01N21/94G01N21/33
Inventor 王成勇杜策之张涛
Owner GUANGDONG UNIV OF TECH