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Visual field clearing agent for medical endoscope and preparation method thereof

A preparation method and endoscope technology, applied in the field of medical endoscope, to achieve the effect of simple preparation process

Active Publication Date: 2020-08-28
南京普莱斯医疗器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a medical endoscope vision clearing agent and its preparation method, to solve the problems existing in the operation of the existing clinical use of the endoscope lens and the existing cleaning agent or lens cleaning method

Method used

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  • Visual field clearing agent for medical endoscope and preparation method thereof
  • Visual field clearing agent for medical endoscope and preparation method thereof
  • Visual field clearing agent for medical endoscope and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Add 1.0g of polyvinylpyrrolidone (polymerization degree is 200) into 100mml of purified water, heat to 40 degrees Celsius to dissolve, then add 0.1g of sodium chloride, stir for 30 minutes and then cool to room temperature, and further stir for 2 hours (speed 2000 rpm) Then, a visual field clearing agent for endoscopes (polyvinylpyrrolidone content: 1.0%, sodium chloride content is about 0.1%) is obtained. The polymer film prepared by coating the clearing agent on the surface of the glass slide not only has an anti-fogging effect, but also the peeling time of oily droplets on the glass slide is 11.7 seconds.

Embodiment 2

[0029] Add 1.0g of polyvinylpyrrolidone (polymerization degree is 200) into 100mml of purified water, heat up to 40 degrees Celsius to dissolve, then add 1.0g of sodium chloride, stir for 30 minutes and then cool to room temperature, and further stir for 2 hours (speed 2000 rpm) Then, a visual field clearing agent for endoscopes (polyvinylpyrrolidone content: 1.0%, sodium chloride content is about 1.0%) is obtained. Coating the clearing agent on the surface of the glass slide to prepare a polymer film not only has an anti-fogging effect, but the oily droplets peel off on the glass slide for 9.5 seconds.

Embodiment 3

[0031] Add 1.0g of polyvinylpyrrolidone (polymerization degree 200) into 100mml of purified water, heat up to 40 degrees Celsius to dissolve, then add 2.0g of sodium chloride, stir for 30 minutes and then cool to room temperature, and further stir for 2 hours (speed 2000 rpm) Then, a visual field clearing agent for endoscopes (polyvinylpyrrolidone content: 1.0%, sodium chloride content is about 2.0%) is obtained. The polymer film prepared by coating the clearing agent on the surface of the glass slide not only has an anti-fogging effect, but the oily droplets peel off on the glass slide for 8.6 seconds.

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Abstract

The invention provides a visual field clearing agent for a medical endoscope. The visual field clearing agent comprises an aqueous solution of polyvinylpyrrolidone and sodium chloride, the particle size of a macromolecular hydrophilic polymer is 5-50 nanometers, and the content of the macromolecular hydrophilic polymer in percentage by weight is 0.2-1.2%; and the content of the sodium chloride inpercentage by weight is 0.1-5.0%. The preparation method comprises the following steps: dissolving polyvinylpyrrolidone in an aqueous solution at 40 DEG C, adding sodium chloride, stirring for 30-150minutes, and cooling to room temperature; and dropwise adding ethanol and stirring for 30 to 150 minutes to obtain clear liquid; the prepared clear liquid is simple in process, can prevent fog when being coated on the surface of a lens, and has a good clear effect.

Description

Technical field [0001] The invention belongs to the technical field of medical endoscopes, and specifically relates to a visual field clearing agent for medical endoscopes and a preparation method thereof. Background technique [0002] Endoscopes are widely used in medical diagnostic equipment. At present, conventional medical endoscopes absorb a large amount of mucus from the patient's body during use, which can never meet the requirements of clear, long-lasting imaging visual quality and freedom from environmental changes. . The specific manifestation is that the endoscope is caused by the operation environment, the heat of the operation instrument, the temperature difference between the inside and outside of the lens tube, the splashing pollution of blood and body fluid, and the condensation of water vapor on the surface of the lens into small water droplets, causing the lens to fog and blur. It will have a certain impact on the safety, continuity and efficiency of the operat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18C11D7/10C11D7/26C11D7/32C11D11/00
CPCC09K3/18C11D7/10C11D7/3281C11D7/261C11D2111/18C11D2111/14
Inventor 臧唯刘洪江
Owner 南京普莱斯医疗器材有限公司
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