CN212321389U

CN212321389U - Virus penetration resistance test device

Info

Publication number: CN212321389U
Application number: CN202020926650.XU
Authority: CN
Inventors: 王文庆; 师广波; 栾同青; 郝树彬
Original assignee: Shandong Quality Inspection Center for Medical Devices
Current assignee: Shandong Quality Inspection Center for Medical Devices
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-01-08
Anticipated expiration: 2030-05-26

Abstract

The utility model relates to a medical product performance testing technical field specifically is a hinder virus penetration performance test device, including the test groove main part, the test groove main part includes test groove cell body, the sealing washer, the supporting network, flange cover and transparent cover, test groove cell body up end is provided with the test groove, the inner edge and the up end of test groove are provided with concave step groove, the sealing washer fixes the test sample on concave step groove, the supporting network props up the test sample, the top of supporting network is fixed through the flange cover, the top of flange cover is provided with transparent cover, test groove cell body is connected with the air supply, the lower extreme is connected with the suspension fluid-discharge tube, the air supply pressurizes for test groove cell body inside, be provided with the backward flow bottle between test groove main part and the air supply, the lower extreme of bottle is provided with backward flow bottle fluid-discharge tube, can avoid the backward flow; the concave step grooves are arranged on the inner edge of the groove body of the test groove and the upper surface of the groove body, and the sealing ring is added, so that the sealing effect is further improved, and the test result is better and more accurate.

Description

Virus penetration resistance test device

Technical Field

The utility model relates to a medical treatment product performance check out test set technical field specifically is a hinder virus penetration test device.

Background

Physical, chemical and thermodynamic factors may degrade the protective properties of the material, and testing before these factors affect it may lead to an illusion of the protective properties of the material. Evaluation tests of the effect of sterilization, storage conditions and expiration date on the penetration resistance of disposable products, and cleaning and sterilization on reusable products should be considered. For example, medical protective garment materials are intended to act as barriers to blood, body fluids and other potentially infectious substances, and various factors, such as surface tension, viscosity and polarity, as well as structure and hydrophilicity or hydrophobicity, of the fluid can affect the wetting and penetration properties of the body fluid. The integrity of the protective barrier may also be compromised by bending, rubbing, or wetting with contaminants such as alcohol and sweat during use. If these are taken into account, the performance of the protective garment material against penetration by the bacteriophage Phi-X174 can be evaluated on behalf of a suitable pretreatment technique for the expected conditions of use.

When the technology is used for carrying out a virus penetration resistance test on a material, a test groove is required, a test sample is used as a separator in the test groove, phage Phi-X174 test suspension is visually separated from the test groove, a groove body of the test groove is fixed on a support, the test suspension is contained in the groove body, the groove body is sealed, and the penetration performance of the material is tested through gas pressurization; in addition, the test groove and the test sample are only compressed by an external flange, the sealing performance is not good enough, the suspension is easy to leak out from the edge of the groove body of the test groove, so that the test suspension passes through the edge of the test sample through the capillary action to cause the test result to have false positive and result to be unqualified, and the problems can indirectly or directly cause the inaccuracy of the test result.

Disclosure of Invention

The utility model aims at solving the existing problems and providing a virus penetration resistance test device, which can avoid the backflow phenomenon by arranging a backflow bottle between a test tank and a gas control area; the groove is arranged on the inner edge of the groove body of the test groove and the upper surface of the groove body, and the sealing ring is added, so that the sealing effect is further improved, and the test result is better and accurate.

In order to achieve the above object, the utility model provides a following technical scheme: when a single group test is carried out, the test device for resisting virus penetration performance comprises a test groove main body, wherein the test groove main body comprises a test groove body, a sealing ring, a supporting net, a flange cover and a transparent cover, the test groove body is a cylinder, a test groove is arranged on the upper end face of the cylinder, test suspension liquid is contained in the test groove, concave step grooves are formed in the inner edge of the test groove and the upper end face of the cylinder, a test sample is fixed on the concave step grooves through the sealing ring, the size of the sealing ring is matched with that of the concave step grooves, the test sample is clamped on the concave step grooves, the test suspension liquid cannot easily flow out of the inner edge of the test groove, the edge of the test sample is prevented from being polluted, the inner area of the test sample clamped by the sealing ring is used as a reference area of the test result, the accuracy of the test result is greatly improved, and the supporting net props up the test sample, the upper part of the supporting net is fixed by a flange cover, a transparent cover is arranged above the flange cover, the cylindrical surface of the groove body of the test groove is provided with a first opening and a second opening which are communicated with the inside of the test groove, the inside of the test groove is connected with an air source through the first opening, after a test sample is fixed, the flange cover is fixed on the supporting net, the transparent cover can be fixed on the flange cover through bolts penetrating through the edge selectively, so that the inside of the test groove is sealed, the second opening is connected with a suspension liquid discharge pipe, the suspension liquid discharge pipe is provided with a valve, the valve is in a closed state, the air source pressurizes the inside of the groove body of the test groove, whether a liquid penetration phenomenon or other infiltration phenomena occur is observed and recorded, a reflux bottle is arranged between the main body of the test groove and the air source, and the lower end of the reflux bottle is provided with a reflux liquid discharge pipe, after the experiment is accomplished, close the air supply, because the negative pressure can cause liquid to follow the gas reflux, set up the liquid that the backward flow bottle made the backward flow and flow into the backward flow bottle in, can not flow into the gas control region, cause controlling means's damage, backward flow bottle fluid-discharge tube can be with the experimental suspension discharge of backward flow.

Further, the air supply provide through oil-free air compressor or diaphragm pump, be connected with pressure control unit after filtering, then be connected with the backward flow bottle, the backward flow bottle be inside seal, backward flow bottle top is provided with first pipeline and second pipeline and the inside intercommunication of backward flow bottle, wherein first pipeline is connected with the air supply, the second pipeline is connected with the gas admission union coupling, the first opening of gas admission pipe and test tank be connected.

Furthermore, a pressure gauge is arranged above the gas inlet pipe and used for testing the gas pressure during the test.

Furthermore, the test groove bodies are provided with a plurality of groups, the plurality of groups of test groove bodies share one gas source, the gas inlet pipe is a three-way pipe, two ends of the gas inlet pipe are respectively connected with the second pipeline and the connector, and the lower end of the gas inlet pipe is connected with the first opening.

Preferably, a gas regulating valve is arranged between the gas inlet pipe and the second pipeline, and a gas switch valve is arranged between the gas inlet pipe and the connector to control the opening, closing and size of gas.

Furthermore, the test sample is square, and the side length of the test sample is more than or equal to 70mm, preferably 75 mm.

Preferably, the supporting net is a square, net-shaped polished plastic or metal net for supporting the stretchable or elastic substance so that the deformation of the test sample is less than or equal to 5.0 mm.

Furthermore, a first gasket is arranged between the test sample and the supporting net, and a second gasket is arranged between the supporting net and the flange cover and used for further preventing the test suspension from leaking.

Further, the test groove main part set up on the test groove support, the height of test groove support adjust from top to bottom, the one end of test groove support is provided with the connecting rod, this connecting rod is connected with a rotation clamp, the rotation clamp portable setting on a montant, foretell pipeline and connecting elements set up in the outside of a safety housing, the test groove main part sets up inside safety housing, the lower extreme of suspension fluid-discharge tube is provided with once virus collecting vat and collects the flowing back.

Further, suspension fluid-discharge tube as the feed liquor pipe, suspension fluid-discharge tube and disposable luer three way connection are connected, according to experimental demand, sometimes need the level to place test groove cell body, inject into test suspension earlier, fix the test sample again, sometimes need fix the test sample earlier, will test the groove again and vertically fix on test groove support, then inject into test suspension, switch on through disposable luer three this moment, connect through injection device, open the valve of suspension fluid-discharge tube, inject test suspension into test groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the backflow phenomenon can be avoided by arranging the backflow bottle between the test tank and the gas control area; the groove is arranged on the inner edge of the groove body of the test groove and the upper surface of the groove body, and the sealing ring is added, so that the sealing effect is further improved, and the test result is better and accurate.

2. The suspension is prevented from seeping out of the edge of the test groove body, so that the test suspension can cause the test result to have false positive through the capillary action from the edge of the test sample, and the result is unqualified.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention,

FIG. 2 is an exploded view of the test cell structure of the present invention,

fig. 3 is a schematic diagram of the testing system of the present invention.

In the figure: 1. connector, 2, gas switch valve, 3, the pressure gauge, 4, the gas admission pipe, 5, test groove support, 6, the test groove main part, 7, suspension fluid-discharge tube, 8, backward flow bottle, 9, the gas control valve, 10, backward flow bottle fluid-discharge tube, 11, first pipeline, 12, the second pipeline, 61, test groove cell body, 62, the test sample, 63, the sealing washer, 64, first packing ring, 65, the supporting network, 66, the second packing ring, 67, the flange lid, 68, transparent cover, 611, the test groove, 612, concave step groove, 613, first opening, 614, the second opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in figures 1-3

Example one

When a single group test is carried out, the test device for resisting virus penetration performance comprises a test groove main body 6, wherein the test groove main body 6 comprises a test groove body 61, a sealing ring 63, a supporting net 65, a flange cover 67 and a transparent cover 68, the test groove body 61 is a cylinder, a test groove 611 is arranged on the upper end surface of the cylinder, test suspension liquid is contained in the test groove 611, a concave step groove 612 is arranged on the inner edge of the test groove 611 and the upper end surface of the cylinder, the test sample 62 is fixed on the concave step groove 612 through the sealing ring 63, the size of the sealing ring 63 is matched with the size of the concave step groove 612, the test sample 62 is clamped on the concave step groove 612, the test suspension liquid cannot easily flow out from the inner edge of the test groove 611, the edge of the test sample 62 is prevented from being polluted, and the inner area of the test sample 62 clamped by the sealing ring 63 is used as a reference area of a test result, the accuracy of the test result is greatly improved, the support net 65 supports the test sample 62, the upper part of the support net 65 is fixed through the flange cover 67, the transparent cover 68 is arranged above the flange cover 67, the cylindrical surface of the test groove body 61 is provided with two first openings 613 and two second openings 614 which are communicated with the inside of the test groove 611, the inside of the test groove 611 is connected with an air source through the first openings 613, after the test sample 62 is fixed, the flange cover 67 fixes the support net 65, the transparent cover 68 is fixed on the flange cover 67 through bolts penetrating the edge optionally, so that the inside of the test groove 611 forms a seal, the second opening 614 is connected with the suspension liquid discharge pipe 7, the suspension liquid discharge pipe 7 is provided with a valve, at the moment, the valve is in a closed state, the air source pressurizes the inside of the test groove body 61, observes and records whether a liquid penetration phenomenon or other infiltration phenomena occur, test tank main part 6 and air supply between be provided with backward flow bottle 8, the lower extreme of backward flow bottle 8 be provided with backward flow bottle fluid-discharge tube 10, experimental back of accomplishing, close the air supply, because the negative pressure can cause liquid to follow the gas reflux, set up backward flow bottle 8 and make the liquid of backward flow in backward flow bottle 8, can not flow into the gas control region, cause controlling means's damage, backward flow bottle fluid-discharge tube 10 can be with the experimental suspension discharge of backward flow.

Further, the air supply provide through oil-free air compressor or diaphragm pump, be connected with pressure control unit after filtering, then be connected with backward flow bottle 8, backward flow bottle 8 be inside seal, backward flow bottle 8 top is provided with first pipeline 11 and second pipeline 12 and the inside intercommunication of backward flow bottle 8, wherein first pipeline 11 is connected with the air supply, second pipeline 12 is connected with gas admission pipe 4, gas admission pipe 4 be connected with the first opening 613 of test groove 611.

And a pressure gauge 3 is arranged above the gas inlet pipe 4 and used for testing the gas pressure during the test.

The test sample 62 is square, and the side length of the test sample 62 is more than or equal to 70mm, preferably 75 mm.

The support net 65 is a square or net-shaped polished plastic or metal net for supporting stretchable or elastic substances, so that the deformation of the test sample 62 is less than or equal to 5.0 mm.

Example two

The test tank bodies 61 are provided with a plurality of groups, the plurality of groups of test tank bodies 61 share one gas source, the gas inlet pipe 4 is a three-way pipe, two ends of the gas inlet pipe 4 are respectively connected with the second pipeline 12 and the connector, and the lower end of the gas inlet pipe 4 is connected with the first opening 613.

And a gas regulating valve 9 is arranged between the gas inlet pipe 4 and the second pipeline 12, and a gas switch valve 2 is arranged between the gas inlet pipe 4 and the connector to control the opening, closing and size of gas.

A first gasket 64 is arranged between the test sample 62 and the support net 65, and a second gasket 66 is arranged between the support net 65 and the flange cover 67 for further preventing the test suspension from leaking.

The test groove main body 6 is arranged on the test groove support 5, the height of the test groove support 5 can be adjusted up and down, one end of the test groove support 5 is provided with a connecting rod, the connecting rod is connected with a rotating clamp, the rotating clamp can be movably arranged on a vertical rod, the pipeline and the connecting components thereof are arranged outside a safe shell, the test groove main body 6 is arranged inside the safe shell, and the lower end of the suspension liquid discharge pipe 7 is provided with a one-time virus collecting groove for collecting liquid discharge.

The suspension liquid discharge pipe 7 is used as a liquid inlet pipe, the suspension liquid discharge pipe 7 is connected with a disposable Ruhr three-way connector, according to test requirements, sometimes a test groove body 61 needs to be horizontally placed, test suspension liquid is firstly injected, then a test sample 62 is fixed, sometimes the test sample 62 needs to be fixed, then the test groove body 61 is vertically fixed on a test groove support 5, then the test suspension liquid is injected, at the moment, the test groove body is communicated through the disposable Ruhr three-way connector, the test groove body is connected through an injection device, a valve of the suspension liquid discharge pipe 7 is opened, and the test suspension liquid is injected into a test groove 611.

The working principle is as follows: 1. the test specimen 62 is cut to a desired area, assembled with the test bath main body 6 sterilized at high temperature in a predetermined structure, and fixed to the test bath holder 5.

2. The suspension liquid discharge pipe of the test tank body 61 is connected with a disposable three-way luer connector, and the gas input end is connected with the pressure control unit.

3. The test cell body 61 was rotated to the position specified in the standard YY/T0689-.

4. After the test is finished, the virus liquid is released by the suspension liquid discharge pipe, collected by the disposable virus liquid collecting tank, and then the disposable three-way luer connector and the pipeline at the air inlet are properly treated together with the disposable virus liquid collecting tank and the virus liquid.

Each part of the test cell body 6 was disassembled and sterilized at high temperature.

The above table is the experimental data required in the standard, and based on the experimental data in the table above, the system provides the following functions:

1. and respectively inputting test conditions in the 6 steps, wherein the test conditions comprise test pressure and test time.

2. And clicking a 'test' key to sequentially perform 6 steps of tests according to the test conditions input in the step 1 until the test is finished.

3. And if the test time of a certain test step is 0, skipping the current test step to carry out the next test.

4. If the test pressure is greater than 3.5kPa, the pressure control unit adjusts the control pressure to the set pressure at a rate of (3.5. + -. 0.5) kPa/s.

5. And (4) stopping the test, resetting the test step and releasing the test pressure if the leakage of the virus liquid is observed.

6. During the test, the remaining time of each test step is displayed in a countdown mode.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A device for testing the penetration performance of a virus is characterized in that: the device comprises a test groove main body (6), wherein the test groove main body (6) comprises a test groove body (61), a sealing ring (63), a supporting net (65), a flange cover (67) and a transparent cover (68), the test groove body (61) is a cylinder, a test groove (611) is arranged on the upper end surface of the cylinder, test suspension liquid is contained in the test groove (611), a concave step groove (612) is arranged on the inner edge of the test groove (611) and the upper end surface of the cylinder, a test sample (62) is fixed on the concave step groove (612) through the sealing ring (63), the supporting net (65) props open the test sample (62), the upper part of the supporting net (65) is fixed through the flange cover (67), the transparent cover (68) is arranged above the flange cover (67), a first opening (613) and a second opening (614) which are communicated with the interior of the test groove (611) are arranged on the cylindrical surface of the test groove body (61), the test tank (611) is internally connected with an air source through a first opening (613), the air source is used for pressurizing the inside of the test tank body (61), a second opening (614) is connected with a suspension liquid discharge pipe (7), the suspension liquid discharge pipe (7) is provided with a valve, a reflux bottle (8) is arranged between the test tank body (6) and the air source, and the lower end of the reflux bottle (8) is provided with a reflux bottle liquid discharge pipe (10).

2. The device for testing the penetration resistance of a virus according to claim 1, wherein: the air supply provide through oil-free air compressor or diaphragm pump, be connected with pressure control unit after filtering, then be connected with backward flow bottle (8), backward flow bottle (8) be inside seal, backward flow bottle (8) top is provided with first pipeline (11) and second pipeline (12) and the inside intercommunication of backward flow bottle (8), wherein first pipeline (11) are connected with the air supply, second pipeline (12) are connected with gas admission pipe (4), gas admission pipe (4) be connected with first opening (613) of test tank (611).

3. The device for testing the penetration resistance of a virus according to claim 2, wherein: and a pressure gauge (3) is arranged above the gas inlet pipe (4).

4. The device for testing the penetration resistance of a virus according to claim 3, wherein: the test tank body (61) is provided with a plurality of groups, a gas source is shared among the test tank bodies (61), the gas inlet pipe (4) is a three-way pipe, two ends of the gas inlet pipe (4) are respectively connected with the second pipeline (12) and the connector, and the lower end of the gas inlet pipe (4) is connected with the first opening (613).

5. The device for testing the penetration resistance of a virus according to claim 4, wherein: the gas inlet pipe (4) and the second pipeline (12) are provided with a gas regulating valve (9) therebetween, and a gas switch valve (2) is arranged between the gas inlet pipe (4) and the connector.

6. The device for testing the penetration resistance of a virus according to claim 5, wherein: the test sample (62) is square.

7. The device for testing the penetration resistance of a virus according to claim 6, wherein: the supporting net (65) is a square or net-shaped polished plastic or metal net.

8. The device for testing the penetration resistance of a virus according to claim 7, wherein: a first gasket (64) is arranged between the test sample (62) and the supporting net (65), and a second gasket (66) is arranged between the supporting net (65) and the flange cover (67).

9. The device for testing the penetration resistance of a virus according to claim 8, wherein: the test tank main body (6) is arranged on the test tank bracket (5), and the height of the test tank bracket (5) can be adjusted up and down.