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Anti-adhesive mucous layer on the surface of an electric knife

A technology of mucosal layer and anti-adhesive layer, which is applied in the direction of layered products, metal layered products, parts of surgical instruments, etc., and can solve the problems of poor anti-adhesive effect of small intestine tissue

Active Publication Date: 2021-05-04
费凛 +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 an anti-adhesive mucous layer on the surface of the electric knife, which aims 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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preparation example Construction

[0028] A preparation method of the above-mentioned anti-adhesive mucous layer, specifically comprising the following steps:

[0029] A1: make the base layer 31;

[0030] A2: Prepare a conductive layer 32 of nanoscale columnar matrix on the surface of the primer layer 31;

[0031] 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.

[0032] 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.

[0033] Further, the preparation method of described SiO2 and nano-Ag mixed layer comprises the following steps:

[0034] a1: Slowly add tetraethyl orthosilicate (TEOS) dropwise to water, hydrochloric acid, NH4OH and absolute ethanol to form the precursor tetraethyl silicate;

[0035] a2: adding nano-silver paste to the precursor tetraethyl silicate to obtain a ...

Embodiment 1

[0046] Primer layer 31: an Ag material layer with a thickness of 3 μm.

[0047] 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.

[0048] Anti-adhesive layer 33: Ag material layer with a thickness of 0.5 μm.

[0049] 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

[0052] Primer layer 31: an Ag material layer with a thickness of 8 μm.

[0053] 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.

[0054] Anti-sticking layer 33: Au material layer with a thickness of 1 μm.

[0055] 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 an anti-adhesive mucous film layer on the surface of an electric knife, comprising a base layer, a conductive film layer and an anti-adhesive layer sequentially arranged on the surface of an electric knife base, the base layer is an Ag layer, and the conductive film layer is SiO2 and Ag The mixed layer, the anti-adhesive layer is Au or Ag film layer; a layer of SiO2 and Ag mixed layer with nano-scale columnar matrix is ​​prepared on the electric knife, and a large number of air molecules are locked between the nano-columns of the mixed layer, so that the small intestine tissue Most of the contact surface with the electric knife is air, which is equivalent to forming a layer of air cushion between the two, so as to achieve the purpose of anti-sticking; the anti-adhesive mucous layer on the surface of the electric knife has low resistivity, high temperature resistance, Anti-oxidation, meets the thermal shock test, and the anti-adhesive attenuation is very small; during the process of hemostasis of the electric knife, the anti-adhesive mucous layer on the surface of the electric knife ensures that the electric knife will not adhere to the mucous membrane, avoiding damage to the mucous membrane, and guarantees the hemostatic effect.

Description

technical field [0001] The invention relates to an anti-adhesive film layer, in particular to 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 time interval, the second puls...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B15/04B32B33/00A61B18/12
CPCA61B18/12A61B2018/00589B32B9/00B32B9/04B32B15/04B32B33/00
Inventor 费凛简勇辉
Owner 费凛
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