A preparation method of anti-adhesive mucous layer on the surface of electric knife

A mucosal layer and anti-adhesion technology, which is applied in coatings, medical science, surgery, etc., can solve the problems of poor anti-adhesion effect of small intestine tissue, and achieve the effect of ensuring hemostasis, avoiding damage to the mucosa, and low resistivity

Active Publication Date: 2020-11-13
简勇辉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for preparing an anti-adhesive mucous layer on the surface of an electric knife, aiming to solve the problem that the existing hemostatic electrode is plated with inert metals such as gold or silver on the surface, and the anti-adhesive effect of the small intestine tissue is not good.

Method used

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  • A preparation method of anti-adhesive mucous layer on the surface of electric knife
  • A preparation method of anti-adhesive mucous layer on the surface of electric knife
  • A preparation method of anti-adhesive mucous layer on the surface of electric knife

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preparation example Construction

[0035] A preparation method of the above-mentioned anti-adhesive mucous layer, specifically comprising the following steps:

[0036] A1: make the base layer 31;

[0037] A2: Prepare a conductive layer 32 of nanoscale columnar matrix on the surface of the primer layer 31;

[0038] A3: An anti-adhesive layer 33 is provided on the top surface of the nanopillars of the conductive layer 32 to obtain an anti-adhesive mucous film layer.

[0039] Specifically, the conductive layer 32 is a mixed layer of SiO2 and nano-Ag in a nanoscale columnar matrix, and the mixed layer of SiO2 and nano-Ag is prepared by a sol-gel method.

[0040] Further, the preparation method of described SiO2 and nano-Ag mixed layer comprises the following steps:

[0041] a1: Slowly add tetraethyl orthosilicate (TEOS) dropwise to water, hydrochloric acid, NH4OH and absolute ethanol to form the precursor tetraethyl silicate;

[0042] a2: adding nano-silver paste to the precursor tetraethyl silicate to obtain a mi...

Embodiment 1

[0053] Primer layer 31: an Ag material layer with a thickness of 3 μm.

[0054] Conductive layer 32: a mixed layer of SiO2 and nano-Ag, with a thickness of 20 μm; wherein, the components of the mixed layer of SiO2 and nano-Ag are as follows: tetraethyl orthosilicate (TEOS) 12%; water 1%; HCL 1%; NH4OH 1% ; Nano-silver paste 1%; the rest is absolute ethanol.

[0055] Anti-adhesive layer 33: Ag material layer with a thickness of 0.5 μm.

[0056] The preparation of the SiO2 and nano-Ag mixed layer: 12% tetraethyl orthosilicate (TEOS) was slowly added dropwise to 1% water, 1% hydrochloric acid, 1% NH4OH and absolute ethanol to form the precursor tetraethyl silicate Ethyl ester; add 1% nano-silver paste to the precursor tetraethyl silicate to obtain a mixed solution; fully stir the mixed solution and disperse it by ultrasonic to obtain a mixed wet gel of SiO2 and nano-Ag. Wherein, the particle size of the nano silver paste is 20nm; in the step S2, the volume ratio of the nano Ag ...

Embodiment 2

[0059] Primer layer 31: an Ag material layer with a thickness of 8 μm.

[0060] Conductive layer 32: a mixed layer of SiO2 and nano-Ag, with a thickness of 5 μm; wherein, the components of the mixed layer of SiO2 and nano-Ag are as follows: tetraethyl orthosilicate (TEOS) 16%; water 0.5%; HCL 0.5%; NH4OH 0.5% ; Nano silver paste 5%; the rest is absolute ethanol.

[0061] Anti-sticking layer 33: Au material layer with a thickness of 1 μm.

[0062] The preparation of the SiO2 and nano-Ag mixed layer: 16% tetraethyl orthosilicate (TEOS) was slowly added dropwise to 0.5% water, 0.5% hydrochloric acid, 0.5% NH4OH and absolute ethanol to form the precursor tetraethyl silicate Ethyl ester; add 5% nano-silver paste to the precursor tetraethyl silicate to obtain a mixed solution; fully stir the mixed solution and disperse it by ultrasonic to obtain a mixed wet gel of SiO2 and nano-Ag. Wherein, the particle size of the nano-silver paste is 30nm; in the step S2, the volume ratio of the...

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Abstract

The invention discloses a preparation method of a mucosa adhesion prevention layer on the surface of an electric knife, which comprises the steps of preparing a base layer, arranging a conductive layer on the base layer, and arranging an anti-adhesion layer on the conductive layer to obtain a mucosa adhesion prevention layer; the base layer is an Ag layer, the conductive film layer is a mixed layer of SiO2 and Ag, and the anti-adhesion layer is an Au or Ag film layer; a mixed layer of SiO2 and Ag having a nano-scale columnar matrix is prepared on the electric knife, and a large amount of air molecules are locked between the nano-columns of the mixed layer, so that the contact surface between small intestine tissues and the electric knife is mostly air, which is equivalent to generating anair cushion between the two to achieve the purpose of adhesion prevention; the mucosa adhesion prevention prepared by the preparation method has the advantages of low resistivity, high temperature resistance, oxidation resistance, confirmation to thermal shock test, and low anti-adhesion attenuation; in the process of hemostasis of the electric knife, the mucosa adhesion prevention layer on the surface of the electric knife prepared by the preparation method ensures that the electric knife cannot adhere to mucosa, thus avoiding damage to the mucosa and ensuring the hemostasis effect.

Description

technical field [0001] The invention relates to a method for preparing a film layer, in particular to a method for preparing an anti-adhesive film layer on the surface of an electric knife. Background technique [0002] The cutting principle of the high-frequency electric knife used in surgery is to use high-frequency pulse electric sparks to cut human tissues. The specific working principle is: the two poles of the high-frequency pulse power supply are respectively connected to the electric knife and the human body. When the pulse voltage is applied between the electric knife and the small intestine tissue, the nearest body fluid will be broken down to form a discharge channel. Due to the small cross-sectional area of ​​the channel and the extremely short discharge time, the energy is highly concentrated, and the instantaneous high temperature generated in the discharge area is enough to melt the local small intestine tissue. After the end of the first pulse, after a short...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L31/08A61L31/14
CPCA61L31/088A61L31/14A61L2420/02A61L2420/08
Inventor 简勇辉费凛
Owner 简勇辉
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