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Hemostatic electric scalpel without adhering to mucosa in gastrointestinal tract

A gastrointestinal and electrocautery technology, which is applied in the parts of surgical instruments, medical science, heating surgical instruments, etc., can solve the problem of poor anti-adhesion effect of small intestinal tissue, and achieve the effect of ensuring hemostasis and avoiding damage to the mucous membrane.

Active Publication Date: 2019-07-26
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 a hemostatic electric knife in the gastrointestinal tract that does not stick to the mucous membrane, 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-sticking effect of the small intestine tissue is not good.

Method used

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  • Hemostatic electric scalpel without adhering to mucosa in gastrointestinal tract
  • Hemostatic electric scalpel without adhering to mucosa in gastrointestinal tract

Examples

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preparation example Construction

[0027] A preparation method of the above-mentioned anti-adhesive mucous layer, specifically comprising the following steps:

[0028] A1: make the base layer 31;

[0029] A2: Prepare a conductive layer 32 of nanoscale columnar matrix on the surface of the primer layer 31;

[0030] 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.

[0031] 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.

[0032] Further, the preparation method of described SiO2 and nano-Ag mixed layer comprises the following steps:

[0033] a1: Slowly add tetraethyl orthosilicate (TEOS) dropwise to water, hydrochloric acid, NH4OH and absolute ethanol to form the precursor tetraethyl silicate;

[0034] a2: adding nano-silver paste to the precursor tetraethyl silicate to obtain a ...

Embodiment 1

[0045] Primer layer 31: an Ag material layer with a thickness of 3 μm.

[0046] 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.

[0047] Anti-adhesive layer 33: Ag material layer with a thickness of 0.5 μm.

[0048] 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 ethanol to form a precursor silicic acid Tetraethyl 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

[0051] Primer layer 31: an Ag material layer with a thickness of 8 μm.

[0052] 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.

[0053] Anti-sticking layer 33: Au material layer with a thickness of 1 μm.

[0054] 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 ethanol to form the precursor silicic acid Tetraethyl 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 t...

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Abstract

The invention discloses a hemostatic electric scalpel without adhering to mucosa in a gastrointestinal tract. A priming layer, a conductive film layer and an anti-bonding layer are successively arranged on the surface of an electric scalpel basal body, the priming layer is an Ag layer, the conductive film layer is a mixed layer of SiO2 and Ag, and the anti-bonding layer is an Au or Ag film layer;the mixed layer of SiO2 and Ag with a nanoscale columnar matrix is prepared on the electric scalpel, a large quantity of air molecules are locked between the nano columns of the mixed layer, so that acontact surface between a small intestine and the electric scalpel is mostly air, which is equivalent to generating a layer of air cushion between the small intestine and the electric scalpel so as to achieve an anti-bonding purpose; and by arranging the priming layer, the conductive film layer and the anti-bonding layer on the surface of an electric scalpel basal body, the electric scalpel not only realizes the conductive hemostatic purpose, but also guarantees not to bond with the mucosa to avoid damaging the mucosa, thereby guaranteeing a hemostatic effect.

Description

technical field [0001] The invention relates to the field of medical instruments for the gastrointestinal tract, in particular to a non-mucosal hemostatic electric knife in the gastrointestinal tract. 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, af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/14A61B18/12A61L31/08A61L31/14A61B18/00
CPCA61B18/12A61B18/14A61B2018/00607A61L31/088A61L31/14A61L2420/08
Inventor 费凛简勇辉
Owner 费凛
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