Test card shell structure

By setting up a liquid reservoir inside the bottom shell of the test card, the problem of diluent flow affecting the detection results and leakage is solved, and the accuracy and safety of the detection results are achieved.

CN223192940UActive Publication Date: 2025-08-05BEIJING JIANNAIXI BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421491731.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-27
Publication Date
2025-08-05
Estimated Expiration
2034-06-27

AI Technical Summary

Technical Problem

During the testing of in vitro diagnostic reagent products, improper addition of diluent will cause diluent to flow from the droplet port to the other space of the test shell, affecting the detection results and posing a risk of liquid leakage.

Method used

A liquid reservoir is set inside the bottom shell of the test card, located below the drop port, to store excess dilution to prevent it from flowing to other spaces of the bottom shell.

Benefits of technology

Effectively avoid dilution flowing directly to the test site of the test strip, ensure the accuracy of the test results and prevent the risk of liquid leakage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a shell structure of a test card. The shell structure comprises a fixing component, a clamping component and a clamping component, wherein the fixing component is arranged in a bottom shell; and the liquid storage tank is arranged in the bottom shell and is positioned below the liquid dropping opening in the surface of the upper shell of the test card. According to the scheme, the liquid storage tank is arranged in the bottom shell and located below the liquid dropping opening, redundant diluent can be stored through the liquid storage tank, the diluent is prevented from flowing to other spaces of the bottom shell, the accuracy of a detection result can be guaranteed, and meanwhile the risk of liquid leakage is avoided.
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Description

Technical Field

[0001] The utility model relates to the technical field of test cards, in particular to a test card shell structure. Background Art

[0002] For in vitro diagnostic reagent products in the medical device industry, samples need to be diluted during the test process, so diluent needs to be added to the test card. If there is too little diluent, the sample cannot reach the test site; if there is too much diluent, the diluent will flow from the drip port to other spaces in the test card shell. Due to capillary phenomena, the diluent may flow directly to the test site of the test paper, affecting the test results and posing a risk of leakage. Utility Model Content

[0003] The utility model provides a test card shell structure, which provides a liquid storage tank inside the bottom shell, and the liquid storage tank is located below the drip port. The liquid storage tank can store excess diluent to prevent the diluent from flowing into other spaces of the bottom shell, which helps to ensure the accuracy of the test results and avoid the risk of leakage.

[0004] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0005] The utility model provides a test card housing structure, comprising:

[0006] A fixing component provided inside the bottom shell for fixing the test paper;

[0007] The liquid reservoir is arranged inside the bottom shell and is located below the dripping port on the surface of the upper shell of the test card.

[0008] Optionally, the fixing component includes:

[0009] End positioning members and end limiting plates are provided at both ends of the inner cavity of the bottom shell in the longitudinal direction;

[0010] The end positioning member is a horizontal U-shaped structure, and the inner cavity of the end positioning member is adapted to the end of the test paper; the distance between the end positioning member and the end limit plate is adapted to the length of the test paper;

[0011] a first end support bar abutting against the end positioning member, the first end support bar abutting against the bottom surface of the test paper, two first end support bars are provided, and the two first end support bars are respectively close to the side edges in the width direction of the test paper;

[0012] The second end support bar abuts against the end limit plate, and the second end support bar abuts against the bottom surface of the test paper. There are two second end support bars, and the two second end support bars are respectively close to the side edges in the width direction of the test paper.

[0013] Optionally, a portion of the inner cavity of the liquid reservoir away from the end positioning member is a square structure, the inner cavity of the liquid reservoir extends toward the end positioning member and shrinks in width to form a gap, and the end positioning member is located at the gap and seals the gap;

[0014] The first end support bar is located inside the liquid reservoir.

[0015] Optionally, a circulation opening is provided through the side surface of the first end support bar.

[0016] Optionally, the test card housing structure further includes:

[0017] A positioning plate is provided inside the bottom shell, wherein two positioning plates are provided and correspond to the two second end support bars respectively, and the facing surfaces of the two positioning plates are provided with semi-cylinders, and the outer circumference of the semi-cylinders abuts against the side surface of the test paper in the width direction;

[0018] A middle support bar is provided between the two positioning plates, wherein the middle support bar abuts against the bottom surface of the test paper. A plurality of the middle support bars are provided and distributed along the length direction of the test paper.

[0019] Optionally, the test card housing structure further includes:

[0020] A baffle is formed between the positioning plate and the inner wall of the bottom shell in the longitudinal direction. Two baffles are provided, and the end limiting plate is located between the two baffles.

[0021] Optionally, the test card housing structure further includes:

[0022] A first supporting platform is provided inside the bottom shell, the first supporting platform is located below the inspection port on the upper shell surface of the test card, and the first supporting platform abuts against the bottom surface of the test paper.

[0023] Optionally, the test card housing structure further includes:

[0024] a second supporting platform and supporting ribs disposed inside the bottom shell;

[0025] The second supporting platform and the supporting ribs are distributed on both sides of the first supporting platform along the length direction of the test paper.

[0026] Optionally, four sides of the first supporting platform, the second supporting platform and the supporting ribs are chamfered structures.

[0027] Optionally, two inner walls of the inner cavity of the bottom shell in the width direction are provided with inclined structures, and the width of the inclined structures gradually increases from top to bottom.

[0028] The above solution of the utility model includes at least the following beneficial effects:

[0029] The above-mentioned solution of the present invention, by arranging a liquid storage tank inside the bottom shell, and the liquid storage tank is located below the drip port, the liquid storage tank can store excess diluent, preventing the diluent from flowing to other spaces of the bottom shell, which helps to ensure the accuracy of the test results and avoid the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of the test card housing structure provided by an embodiment of the present utility model;

[0031] Figure 2 This is a front cross-sectional view of the test card housing structure provided by an embodiment of the present utility model;

[0032] Figure 3 yes Figure 2 An enlarged schematic diagram of part A.

[0033] The following are the descriptions of the reference numerals:

[0034] 1. Bottom shell; 2. Liquid storage tank; 3. End positioning piece; 4. First end support bar; 5. Flow port; 6. Support rib; 7. First support platform; 8. Second support platform; 9. Positioning plate; 10. Semi-cylinder; 11. Middle support bar; 12. End limit plate; 13. Second end support bar; 14. Inclined structure; 15. Baffle. DETAILED DESCRIPTION

[0035] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0036] like Figure 1-Figure 3 As shown, the utility model provides a test card housing structure, including:

[0037] A fixing component provided inside the bottom shell 1 for fixing the test paper;

[0038] The liquid reservoir 2 is arranged inside the bottom shell 1 and is located below the dripping port on the surface of the upper shell of the test card.

[0039] In this embodiment, the test paper is fixed inside the bottom shell 1 by a fixing component, and the upper shell of the test card is connected to the bottom shell 1 to complete the assembly of the test card; when the test card is used, the sample and diluent are added through the dripping port of the upper shell. When too much diluent is added, the excess diluent enters the liquid reservoir 2. The excess diluent is stored in the liquid reservoir 2, which can effectively prevent the diluent from flowing to other spaces of the bottom shell 1, thereby preventing the diluent from flowing directly to the test site of the test paper under the action of capillary phenomenon, which helps to ensure the accuracy of the test results while avoiding the risk of leakage.

[0040] like Figure 2 As shown, in an optional embodiment of the present invention, the fixing assembly includes:

[0041] End positioning members 3 and end limiting plates 12 are provided at both ends of the inner cavity of the bottom shell 1 in the longitudinal direction;

[0042] The end positioning member 3 is a horizontal U-shaped structure, and the inner cavity of the end positioning member 3 is adapted to the end of the test paper; the distance between the end positioning member 3 and the end limit plate 12 is adapted to the length of the test paper;

[0043] A first end support bar 4 abutting against the end positioning member 3, the first end support bar 4 abutting against the bottom surface of the test paper, two first end support bars 4 are provided, and the two first end support bars 4 are respectively close to the side edges in the width direction of the test paper;

[0044] The second end support bar 13 abuts against the end limit plate 12, and the second end support bar 13 abuts against the bottom surface of the test paper. There are two second end support bars 13, and the two second end support bars 13 are respectively close to the side edges in the width direction of the test paper.

[0045] In this embodiment, when fixing the test paper, the two ends of the test paper are placed on the first end support bar 4 and the second end support bar 13 respectively. At this time, one end of the test paper is clamped and fixed inside the end positioning member 3, and the width direction of the test paper is limited by the end positioning member 3. The length direction of the test paper is limited by the end limiting plate 12 and the end positioning member 3, so that the test paper is fixed inside the bottom shell 1.

[0046] like Figure 2 As shown, in an optional embodiment of the present invention, the portion of the inner cavity of the liquid reservoir 2 away from the end positioning member 3 is a square structure, the inner cavity of the liquid reservoir 2 extends toward the end positioning member 3 and shrinks in width to form a gap, and the end positioning member 3 is located in the gap and seals the gap;

[0047] The first end support bar 4 is located inside the liquid reservoir 2 .

[0048] In this embodiment, the above structure is adopted to connect the inner cavity of the end positioning member 3 with the inner cavity of the liquid reservoir 2, and the first end support bar 4 is located inside the liquid reservoir 2, so that the excess diluent can accurately enter the liquid reservoir 2.

[0049] like Figure 1 and Figure 2 As shown, in an optional embodiment of the present invention, a flow opening 5 is provided through the side surface of the first end support bar 4 .

[0050] In this embodiment, by providing the flow port 5 , the inner cavity of the liquid reservoir 2 can be fully connected, ensuring that excess diluent is evenly distributed inside the liquid reservoir 2 and preventing the diluent from overflowing the liquid reservoir 2 .

[0051] like Figure 1 and Figure 2 As shown, in an optional embodiment of the present invention, the test card housing structure further includes:

[0052] Two positioning plates 9 are provided inside the bottom shell 1, and they correspond to the two second end support bars 13 respectively. The facing surfaces of the two positioning plates 9 are provided with semi-cylinders 10, and the outer circumference of the semi-cylinders 10 abuts against the side surface of the test paper in the width direction;

[0053] A middle support bar 11 is provided between the two positioning plates 9 , and the middle support bar 11 abuts against the bottom surface of the test paper. There are multiple middle support bars 11 , and they are distributed along the length direction of the test paper.

[0054] In this embodiment, the test paper is auxiliary supported by the middle support bar 11, and the test paper is limited in the width direction by the positioning plate 9 and the semi-cylinder 10, which can further ensure the stability of the test paper.

[0055] like Figure 2 As shown, in an optional embodiment of the present invention, the test card housing structure further includes:

[0056] A baffle 15 is formed between the positioning plate 9 and the inner wall of the bottom shell 1 in the longitudinal direction. Two baffles 15 are provided, and the end limiting plate 12 is located between the two baffles 15.

[0057] In this embodiment, as the sample and the diluent move on the test paper, the diluent may enter the space of the bottom shell 1 from the end limit plate 12 along the test paper, thereby allowing a small amount of diluent to enter the interior of the space of the bottom shell 1. The baffle 15 and the positioning plate 9 form a cavity, which can store the above-mentioned small amount of diluent and limit the small amount of diluent to prevent the small amount of diluent from flowing into other spaces of the bottom shell 1 and causing the diluent to seep out from the connection between the bottom shell 1 and the upper shell.

[0058] like Figure 1 and Figure 2As shown, in an optional embodiment of the present invention, the test card housing structure further includes:

[0059] The first supporting platform 7 is provided inside the bottom shell 1 and is located below the inspection port on the upper shell surface of the test card. The first supporting platform 7 abuts against the bottom surface of the test paper.

[0060] In this embodiment, the test paper is supported by the first supporting platform 7 to ensure the stability of the test paper and facilitate viewing the test results through the inspection port of the upper shell.

[0061] like Figure 1 and Figure 2 As shown, in an optional embodiment of the present invention, the test card housing structure further includes:

[0062] A second supporting platform 8 and supporting ribs 6 are provided inside the bottom shell 1;

[0063] The second supporting platform 8 and the supporting ribs 6 are distributed on both sides of the first supporting platform 7 along the length direction of the test paper.

[0064] In this embodiment, the second supporting platform 8 and the supporting ribs 6 can further improve the stability of the test paper, making it easier to view the test results through the inspection port of the upper shell.

[0065] like Figure 1 As shown, in an optional embodiment of the present invention, the four sides of the first supporting platform 7, the second supporting platform 8 and the supporting rib 6 are all chamfered structures.

[0066] In this embodiment, when an erroneous operation such as shaking the test card occurs, causing the diluent inside the liquid reservoir 2 to flow to other spaces in the bottom shell 1, by setting the four sides of the first support platform 7, the second support platform 8 and the support rib 6 to a chamfered structure, the capillary phenomenon can be reduced, and the diluent can be prevented from flowing through the first support platform 7, the second support platform 8 or the support rib 6 to the test site of the test paper, which helps to ensure the accuracy of the test results.

[0067] like Figure 1 As shown, in an optional embodiment of the present invention, two inner walls of the inner cavity of the bottom shell 1 in the width direction are provided with inclined structures 14, and the width of the inclined structures 14 gradually increases from top to bottom.

[0068] In this embodiment, when an erroneous operation such as shaking the test card occurs, causing the diluent inside the liquid reservoir 2 to flow to other spaces in the bottom shell 1, by providing a slope structure 14 on both inner walls in the width direction of the inner cavity of the bottom shell 1, the probability of the diluent leaking from the connection between the bottom shell 1 and the upper shell can be reduced.

[0069] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A test card housing structure, characterized in that: include: A fixing component disposed inside the bottom shell (1) for fixing the test paper; A liquid storage tank (2) is arranged inside the bottom shell (1), and the liquid storage tank (2) is located below the dripping port on the surface of the upper shell of the test card.

2. The test card housing structure according to claim 1, characterized in that: The fixing assembly includes: End positioning members (3) and end limiting plates (12) are arranged at both ends of the inner cavity of the bottom shell (1) in the longitudinal direction; The end positioning member (3) is a horizontal U-shaped structure, and the inner cavity of the end positioning member (3) is adapted to the end of the test paper; the distance between the end positioning member (3) and the end limiting plate (12) is adapted to the length of the test paper; a first end support bar (4) abutting against the end positioning member (3), the first end support bar (4) abutting against the bottom surface of the test paper, two first end support bars (4) being provided, and the two first end support bars (4) being respectively close to the side edges in the width direction of the test paper; A second end support bar (13) abutting against the end limit plate (12), the second end support bar (13) abutting against the bottom surface of the test paper, two second end support bars (13) are provided, and the two second end support bars (13) are respectively close to the side edges in the width direction of the test paper.

3. The test card housing structure according to claim 2, characterized in that: The portion of the inner cavity of the liquid reservoir (2) away from the end positioning member (3) is a square structure, the inner cavity of the liquid reservoir (2) extends toward the end positioning member (3) and shrinks in width to form a gap, and the end positioning member (3) is located at the gap and seals the gap; The first end support bar (4) is located inside the liquid storage tank (2).

4. The test card housing structure according to claim 3, characterized in that: A flow opening (5) is provided through the side surface of the first end support bar (4).

5. The test card housing structure according to claim 2, characterized in that: Also includes: A positioning plate (9) is provided inside the bottom shell (1), wherein two positioning plates (9) are provided and correspond to the two second end support bars (13) respectively, and semi-cylinders (10) are provided on the facing surfaces of the two positioning plates (9), and the outer circumference of the semi-cylinders (10) abuts against the side surface of the test paper in the width direction; A middle support bar (11) is provided between the two positioning plates (9), wherein the middle support bar (11) abuts against the bottom surface of the test paper, and a plurality of the middle support bars (11) are provided and distributed along the length direction of the test paper.

6. The test card housing structure according to claim 5, characterized in that: Also includes: A baffle (15) is formed between the positioning plate (9) and the inner wall of the bottom shell (1) in the longitudinal direction. Two baffles (15) are provided, and the end limit plate (12) is located between the two baffles (15).

7. The test card housing structure according to claim 1, characterized in that: Also includes: A first supporting platform (7) is provided inside the bottom shell (1), the first supporting platform (7) is located below the inspection port on the upper shell surface of the test card, and the first supporting platform (7) abuts against the bottom surface of the test paper.

8. The test card housing structure according to claim 7, characterized in that: Also includes: A second supporting platform (8) and supporting ribs (6) arranged inside the bottom shell (1); The second supporting platform (8) and the supporting ribs (6) are distributed on both sides of the first supporting platform (7) along the length direction of the test paper.

9. The test card housing structure according to claim 8, characterized in that: The four sides of the first supporting platform (7), the second supporting platform (8) and the supporting rib (6) are all chamfered structures.

10. The test card housing structure according to claim 1, wherein: Two inner walls of the inner cavity of the bottom shell (1) in the width direction are provided with inclined surface structures (14), and the width of the inclined surface structures (14) gradually increases from top to bottom.