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Oxygen permeability test device and oxygen permeability test method

A testing method and testing device technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of high price, high operating cost, frequent maintenance and other problems, and achieve the goal of reducing operating costs, reducing system errors, and improving testing accuracy. Effect

Inactive Publication Date: 2016-09-07
GUANGZHOU PUDAO LIANXIN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are obvious defects in the above two test methods: the polarographic method can only measure the oxygen permeability coefficient of soft contact lenses and artificial corneas, and its application is extremely limited; although the coulometric method can be used for the determination of the oxygen permeability coefficient of rigid contact lenses , can also be used for the determination of the oxygen permeability coefficient of soft contact lenses, but the Coulomb sensor in the Coulomb method is expensive, and it is a consumable device with frequent maintenance, short service life, and high operating costs

Method used

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  • Oxygen permeability test device and oxygen permeability test method
  • Oxygen permeability test device and oxygen permeability test method
  • Oxygen permeability test device and oxygen permeability test method

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Test sample: dry chitosan film with fixed arc surface;

[0054] The butt joint between the oxygen chamber 21 and the carrier gas chamber 24 is an arc surface:

[0055] The carrier gas is nitrogen;

[0056] The left and right fixtures were used to test respectively, and compared with the coulometric test results, the test results are shown in Table 1.

Embodiment 2

[0058] Test sample: dry chitosan arc mask with 96.7% degree of deacetylation, the junction of the oxygen chamber 21 and the carrier gas chamber 24 is an arc surface, the carrier gas is nitrogen, and the left and right fixtures are used simultaneously. Channel mode test, and compared with the coulometric test results, the test results are shown in Table 1.

Embodiment 3

[0060] The test sample is a wet chitosan arc mask with a degree of deacetylation of 96.7%;

[0061] The butt joint between the oxygen chamber 21 and the carrier gas chamber 24 is an arc surface;

[0062] The carrier gas is nitrogen;

[0063] The dual-channel mode test using the left and right fixtures at the same time was used, and compared with the test results of the coulometric method, the test results are shown in Table 1.

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Abstract

The invention discloses an oxygen permeability test device and an oxygen permeability test method. The device comprises two sample clamps, an oxygen feeding device, a carrier gas feeding device and a detection device, wherein the sample clamps consist of oxygen cavities and carrier gas cavities; the oxygen cavities are connected with the oxygen feeding device through oxygen cavity feeding pipelines and are further provided with oxygen cavity discharging pipelines; the carrier gas cavities are connected with the carrier gas feeding device through carrier gas cavity feeding pipelines and are connected with the detection device through carrier gas cavity discharging pipelines; the detection device comprise a quantitative sample injection device and a gas chromatograph. The method disclosed by the invention comprises the following steps: placing a sample into the sample clamps, and feeding oxygen and carrier gas respectively to two sides of the sample. The oxygen enters the carrier gas through the sample, and the carrier gas is detected to obtain oxygen permeability data of the material. The device and the method can be used for testing the oxygen permeability of a cornea repair material; the device is long in service life, low in operation cost, small in system error and high in test precision.

Description

technical field [0001] The invention relates to an oxygen permeability testing device and an oxygen permeability testing method. Background technique [0002] Oxygen permeability is an important performance index of corneal repair materials. If the oxygen permeability of corneal repair materials does not meet the requirements, the cornea will be in a state of hypoxia for a long time, resulting in a continuous decrease in the number of corneal endothelial cells, which will eventually cause great damage to the cornea. damage, therefore, oxygen permeability testing is an important part of the characterization of corneal repair materials. [0003] Common detection methods for the oxygen permeability of corneal repair materials include the following two methods: 1) For soft contact lenses and artificial corneas, the polarographic method is generally used. The sample is attached to the electrode. After oxygen passes through the sample and is separated, it is An electrochemical re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/025
Inventor 任力刘卅杨军忠王家鸣王迎军
Owner GUANGZHOU PUDAO LIANXIN BIOTECH CO LTD
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