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Lead-free indicator for pressure steam sterilization and preparation method thereof

A technology of pressure steam and indicator, applied in the direction of material analysis, instruments, measuring devices, etc. by observing the influence of chemical indicators, can solve the problems of children's intellectual development, physical growth and learning ability and adverse effects on hearing, to avoid Effects of lead exposure and avoidance of environmental pollution

Active Publication Date: 2020-02-14
SHINVA MEDICAL INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have confirmed that when the blood lead level is around 10ug / dL (0.483umol / L), although it is not enough to produce specific clinical manifestations, it can already have adverse effects on children's intellectual development, physical growth, learning ability and hearing

Method used

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  • Lead-free indicator for pressure steam sterilization and preparation method thereof
  • Lead-free indicator for pressure steam sterilization and preparation method thereof
  • Lead-free indicator for pressure steam sterilization and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The lead-free chemical indicator card for pressure steam sterilization is coated with an indicator on white cardboard by means of screen printing, etc. The weight percentage of the indicator is composed of:

[0029]

[0030] The indicator is to mix polyethylene resin with ethyl acetate, stir until the polyethylene resin is completely dissolved in ethyl acetate, add anhydrous chromium sulfate, then add sodium carbonate and stir for 1 hour, then grind it with a three-roll mill until it is ready for use. The scraper fineness meter measures the fineness to be less than 5 microns. For 121 ℃, 20min sterilization program.

Embodiment 2

[0032] The lead-free chemical indicator card for pressure steam sterilization is coated with an indicator on white cardboard by flexographic printing, etc. The weight percentage of the indicator is composed of:

[0033]

[0034] The indicator is to mix the acrylate resin with cyclohexanone, stir until the acrylate resin is completely dissolved in the cyclohexanone, add anhydrous chromium sulfate, add sodium bicarbonate and stir for 1 hour, then grind it to It is made by measuring the fineness of less than 3 microns with a scraper fineness meter. For 134 ℃, 4min sterilization program.

Embodiment 3

[0036] The lead-free chemical indicator card for pressure steam sterilization is coated with an indicator on white cardboard by means of screen printing, etc. The weight percentage of the indicator is composed of:

[0037]

[0038] The indicator is to mix polyvinyl chloride resin with cyclohexanone, stir until the polyvinyl chloride resin is completely dissolved in cyclohexanone, add anhydrous chromium sulfate, add sodium carbonate and stir for 1 hour, then grind with a three-roll mill It is made until the fineness measured by a scraper fineness meter is less than 10 microns. For 134 ℃, 18min sterilization program.

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Abstract

The invention belongs to the technical field of chemical indicators, and particularly relates to a lead-free indicator for pressure steam sterilization and a preparation method thereof. The lead-free indicator is prepared from the following raw materials: a bonding material, dye, a control agent and a solvent. The preparation method comprises the steps of mixing the bonding material with the solvent, and stirring until the bonding material is completely dissolved in the solvent; adding the dye, adding the control agent, and stirring; and grinding with a three-roller grinder. The chemical indicator does not contain heavy metal lead, and contains Cr3<+> which is one of essential trace elements for human bodies, so that lead exposure of medical staff is avoided, a lead-free environment is provided, and environmental pollution is also avoided.

Description

technical field [0001] The invention belongs to the technical field of chemical indicators, in particular to a lead-free indicator for pressure steam sterilization and a preparation method thereof. Background technique [0002] In the daily work of the hospital, there are often various instruments and utensils that need to be disinfected and sterilized. With the continuous improvement of people's awareness of health, the demand for various medical supplies is increasing. These products need to be strictly sterilized before use. The sterilization process also involves medical treatment, medicine, food, hygiene Supplies and many other fields. Therefore, higher requirements are put forward for the routine inspection and rapid identification of the sterilization effect. [0003] Traditional indicators generally contain heavy metal - lead. Lead is a neurotoxic heavy metal element that has no physiological function in the human body, and its ideal blood lead concentration is ze...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
CPCG01N21/78G01N2021/775
Inventor 赵可龙屈道银钟善
Owner SHINVA MEDICAL INSTR CO LTD
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