Test paper card shell

Abstract

The utility model belongs to the technical field of reagent detection, and discloses a test paper clamping shell. The test paper clamping shell comprises a shell body, an observation window, a test tube fixing hole, a sealing piece and a tube breaking blade. According to the test paper clamping shell, in the sample adding link, a test tube cover does not need to be opened, a test tube only needs to be directly placed into the clamping shell through the test tube fixing hole, the sealing piece can seal a gap between the test tube and the test tube fixing hole, the tube breaking blade cuts the test tube in the test tube pressing process, and a reagent in the test tube flows into the reagent adding cavity; meanwhile, a transparent partition plate is arranged on the observation window in a sealed mode, it is guaranteed that the interior of the shell body of the test paper card shell is isolated from the outside in the sample adding operation process, and therefore it can be guaranteed that the whole chromatography process is not in contact with outside air, and the risk of outside aerosol pollution is greatly reduced through the design; the phenomenon that the detection result is false positive due to aerosol pollution is completely eradicated from the source, and the accuracy of the detection result is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of reagent testing technology, and in particular to a test strip holder. Background Technology

[0002] Test strip cartridge technology has continued to develop in many aspects, including structural design, material selection, manufacturing process, and functional expansion. In terms of structural design, optimization of the fixation, sealing, sample addition, observation, and backflow prevention structures has improved the fixation effect, detection accuracy, and ease of operation of the test strips. Material selection covers both conventional plastics and special performance materials to meet different cost and functional requirements.

[0003] However, most commercially available test strip cartridges currently use an open design. Both the observation window and the sample dispensing port are directly exposed to the air, requiring the sample tube to be opened for dispensing. During this process, aerosols in the outside air can easily come into contact with the sample, interfering with the test results and potentially leading to false positives and errors in the final test results. Utility Model Content

[0004] The purpose of this invention is to provide a test strip holder with reliable sealing, which can prevent contamination by external aerosols, thereby improving detection efficiency, accuracy and stability.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A test strip holder includes: a housing having a reagent adding chamber formed therein; an observation window disposed on the housing, the observation window being sealed with a transparent partition; a test tube fixing hole disposed on the housing and communicating with the reagent adding chamber; a sealing element disposed at one end of the test tube fixing hole; and a tube-breaking blade disposed in the reagent adding chamber for breaking a test tube inserted into the reagent adding chamber through the test tube fixing hole.

[0007] Preferably, the housing includes an upper housing and a lower housing, which are sealed together; the upper housing and the lower housing are closed to form a reagent addition chamber.

[0008] Preferably, the test tube fixing holes are provided in at least one set, and each set of test tube fixing holes is provided in two sets, for fixing buffer test tubes and sample analysis solution test tubes respectively.

[0009] Preferably, the lower shell is provided with a buffer solution storage tank, which is correspondingly provided with the test tube fixing hole for fixing the buffer solution test tube.

[0010] Preferably, the buffer solution storage tank has a flow guide port, which is correspondingly positioned to the end of the test strip.

[0011] Preferably, the test tube fixing hole for fixing the sample analysis solution is located above the test paper.

[0012] Preferably, a countersunk hole is provided at the end of the test tube fixing hole away from the reagent adding chamber, and the sealing element is disposed in the countersunk hole.

[0013] Preferably, the sealing element is an annular structure, the inner diameter of the sealing element is smaller than the inner diameter of the test tube, and the inner diameter of the test tube fixing hole matches the inner diameter of the test tube.

[0014] Preferably, the tube-breaking blade is disposed on the upper housing and located at the bottom of the test tube fixing hole.

[0015] Preferably, the device also includes a test strip fixing structure, which is disposed within the housing and extends from the reagent adding chamber toward the observation window.

[0016] The beneficial effects of this utility model are:

[0017] The test strip holder provided by this utility model includes a shell, an observation window, a test tube fixing hole, a sealing element, and a tube-breaking blade. A reagent adding chamber is formed inside the shell; the observation window is disposed on the shell, and a transparent partition is sealed on the observation window; the test tube fixing hole is disposed on the shell and communicates with the reagent adding chamber; the sealing element is disposed at one end of the test tube fixing hole; the tube-breaking blade is disposed inside the reagent adding chamber and is used to break a test tube inserted into the reagent adding chamber from the test tube fixing hole. In the sample addition process, the test strip holder of this invention eliminates the need to open the test tube cap. The test tube is simply inserted directly into the holder through the test tube fixing hole. The sealing element seals the gap between the test tube and the fixing hole. The tube-breaking blade cuts the test tube as it is pressed down, allowing the reagent to flow into the reagent addition chamber, thus conveniently initiating the chromatography process. Simultaneously, the observation window is sealed with a transparent partition, ensuring that the interior of the test strip holder is isolated from the outside environment during sample addition. This design significantly reduces the risk of external aerosol contamination, eliminating false positives caused by aerosol contamination and guaranteeing the accuracy of the test results. Attached Figure Description

[0018] Figure 1 This is a side view of the upper housing of the test strip card holder in an embodiment of this utility model;

[0019] Figure 2 This is a top view of the upper shell of the test strip card holder in an embodiment of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the upper shell of the test strip card holder in an embodiment of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the lower shell of the test strip card in an embodiment of this utility model;

[0022] Figure 5 This is a top view of the lower housing of the test strip card in an embodiment of this utility model;

[0023] Figure 6 This is a utility model Figure 4 Another perspective.

[0024] In the picture:

[0025] 1. Upper shell; 11. Test tube fixing hole; 12. Countersunk hole; 13. Knife groove;

[0026] 2. Lower shell; 21. Buffer solution storage tank; 211. Flow port;

[0027] 3. Reagent addition chamber;

[0028] 4. Observation window; 41. Transparent partition;

[0029] 5. Test paper fixing structure; 6. Connection fixing structure. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] This utility model discloses a test strip holder, such as Figure 1 and Figure 2 As shown, it includes a shell, observation window 4, test tube fixing hole 11, sealing element (not shown in the figure), and tube-breaking blade (not shown in the figure). Among them, as... Figure 3 As shown, a reagent adding chamber 3 is formed inside the shell; an observation window 4 is set on the shell, and a transparent partition 41 is sealed on the observation window 4; a test tube fixing hole 11 is set on the shell and communicates with the reagent adding chamber 3; a sealing element is set at one end of the test tube fixing hole 11; a tube-breaking blade is set inside the reagent adding chamber 3 and is used to cut the test tube inserted into the reagent adding chamber 3 from the test tube fixing hole 11. Understandably, during the sample addition process, the operator does not need to open the test tube cap. They simply insert the test tube directly into the housing through the test tube fixing hole 11. The sealing element seals the gap between the test tube and the fixing hole 11. The tube-breaking blade cuts the test tube as it is pressed down, allowing the reagent in the test tube to flow into the reagent addition chamber 3, thus conveniently initiating the chromatography process. Simultaneously, a transparent partition 41 is sealed at the observation window 4, ensuring that the interior of the test strip housing is isolated from the outside environment during sample addition. This ensures that the chromatography process is completely free from contact with outside air, significantly reducing the risk of external aerosol contamination and eliminating false positives caused by aerosol contamination, thus guaranteeing the accuracy of the test results. The transparent partition 41, made of transparent polycarbonate, can be directly fused to the observation window 4 area during 3D printing, effectively isolating air and ensuring a stable testing environment.

[0035] In some embodiments, such as Figure 3 and Figure 4 As shown, the housing includes an upper housing 1 and a lower housing 2, which are sealed together. When closed, the upper housing 1 and lower housing 2 form a reagent adding cavity 3. In some specific embodiments, a hollow protrusion is provided at one end of the upper housing 1. The hollow protrusion can be spherical or polygonal, and the specific shape can be determined according to actual needs; no limitation is made here. When the hollow protrusion and the lower housing 2 are closed, they together form the reagent adding cavity 3. A test tube fixing hole 11 and a tube-breaking blade are provided on the upper housing 1. The test tube fixing hole 11 is located on the upper surface of the hollow protrusion, and the hole wall of the test tube fixing hole 11 extends downward along its axis, increasing the stability of the test tube fixation.

[0036] In some embodiments, such as Figure 2 and Figure 3 As shown, at least one set of test tube fixing holes 11 is provided, with two holes in each set, for fixing buffer solution test tubes and sample analysis solution test tubes, respectively. It is understood that to ensure the sample analysis solution can be successfully chromatographyd and flow to the reaction zone on the test strip, buffer solution is usually added to dilute and accelerate its flow to the reaction zone. However, when mixing the liquids, the test tube cap needs to be opened, making it easy for the sample reagents to come into contact with outside air, which may lead to contamination of the sample reagents by external aerosols, resulting in incorrect test strip results. Therefore, this invention directly inserts the buffer solution and sample analysis solution into the reagent adding chamber 3 through the test tube fixing hole 11 using a sealed test tube. Under the action of the tube-breaking blade, the test tube is broken during the downward pressure, allowing the buffer solution and sample analysis solution to mix in the reagent adding chamber 3, achieving the effect of isolation from the outside environment.

[0037] In some embodiments, such as Figures 4 to 6 As shown, a buffer solution storage tank 21 is provided on the lower shell 2, and the buffer solution storage tank 21 is correspondingly arranged with the test tube fixing hole 11 for fixing the buffer solution test tube. In some specific embodiments, the tank wall of the buffer solution storage tank 21 has an annular structure, and the buffer solution storage tank 21 has a flow guide port 211, which is correspondingly arranged with the end of the test paper set on the test paper fixing structure 5. It can be understood that the small opening located between the buffer solution storage tank 21 and the test paper fixing structure 5 is to ensure that the sample and buffer solution can flow smoothly onto the test paper after mixing. The shape of the flow guide port 211 can be circular, square, or other suitable shapes, and the size can be adjusted according to the actual liquid flow requirements to promote sample chromatography. After the buffer solution test tube is punctured, the buffer solution flows into the buffer solution storage tank 21 for a short period of time, and then flows out from the flow guide port 211 at a suitable flow rate, contacts the end of the test paper, is absorbed by the test paper, and mixes with the sample analysis solution to promote sample chromatography.

[0038] In some embodiments, the tube fixing hole 11 for fixing the sample analysis solution tube is located above the test strip. It is understood that aligning the tube fixing hole 11 with the upper end of the test strip allows the sample analysis solution to drip directly onto the test strip and be absorbed by it. Simultaneously, the test strip draws in buffer solution, allowing the sample analysis solution to be smoothly chromatographyd and delivered to the reaction zone on the test strip as the buffer solution continuously flows into the test strip. The operator can then observe the test strip's detection results through the observation window 4.

[0039] In some embodiments, such as Figure 2 As shown, a countersunk hole 12 is provided at the end of the test tube fixing hole 11 away from the reagent adding chamber 3, and a sealing element (not shown in the figure) is disposed within the countersunk hole 12. The sealing element has a ring-shaped structure, and its inner diameter is smaller than that of the test tube. The inner diameter of the test tube fixing hole 11 matches the outer diameter of the test tube. It can be understood that the sealing element can be a sealing ring, usually made of silicone or rubber, with an inner diameter slightly smaller than the outer diameter of the test tube. It relies on elastic deformation to tightly fit the outer wall of the test tube, preventing sample leakage or contamination from the outside. The inner diameter of the test tube fixing hole 11 matches the outer diameter of a standard test tube, and the test tube is sealed and fixed together by the sealing element and the test tube cap.

[0040] In some embodiments, such as Figure 3 As shown, a tube-breaking blade (not shown) is mounted on the upper housing 1 and located at the bottom of the test tube fixing hole 11. In some specific embodiments, blade grooves 13 are provided on opposite side walls of the upper housing 1. The two ends of the tube-breaking blade are respectively engaged and fixed with the blade grooves 13, with the cutting edge of the tube-breaking blade facing upwards and located at the bottom of the test tube fixing hole 11. At this time, the tube-breaking blade is vertically positioned relative to the test tube. When two test tubes are inserted, the tube-breaking blade can simultaneously cut through both test tubes and eventually enter the middle of the test tube. The reagent inside the test tube flows out from the opening at the bottom of the test tube, realizing the operation of adding reagents without opening the test tube cap, avoiding the problem of aerosol contamination that may occur due to contact with outside air during the reagent addition process. In other embodiments, when the test tube fixing hole 11 is set as a set, that is, when two test tubes are inserted at the same time, two tube-breaking blades are provided, respectively mounted on two opposite inner side walls of the upper housing 1, which can cut through the two test tubes separately. In some specific embodiments, a blade groove 13 is provided on the inner sidewall of the upper housing 1, and the back side of the tube-breaking blade is vertically disposed and fixed in the blade groove 13. When the test tube fixing holes 11 are set in two or more sets, it can be understood that each set of test tubes can correspond to one tube-breaking blade, or each test tube can correspond to one tube-breaking blade, which can be set according to actual needs. It can be understood that the tube-breaking blade can be a stainless steel part, arranged in a long strip shape, with the blade facing the test tube, and can automatically cut the test tube wall when the test tube is inserted and pressed down.

[0041] In some embodiments, such as Figure 4and Figure 5 As shown, the test strip holder also includes a test strip fixing structure 5, which is disposed within the housing and extends from the reagent adding chamber 3 towards the observation window 4. It is understood that the test strip fixing structure 5 is disposed on the lower housing 2. By setting the test strip fixing structure 5, it is possible to prevent the test strip within the test strip holder from shifting or curling, ensuring that both the buffer solution and the sample analysis solution can flow into the test strip as expected.

[0042] In some embodiments, the test strip housing further includes a connecting and fixing structure 6, which consists of multiple snap-fit ​​structures. The snap-fit ​​structures are respectively disposed on the upper housing 1 and the lower housing 2. The snap-fit ​​structures corresponding to the upper housing 1 and the lower housing 2 cooperate to achieve a tight connection between the lower housing 2 and the upper housing 1. The number and position of the snap-fits can be set according to the actual situation to ensure the stability of the connection.

[0043] In some specific embodiments, both the upper housing 1 and the lower housing 2 are made of transparent resin, model 8400, which has good strength, transparency, and machinability. The seals are made of silicone with a Shore A hardness of 50A to ensure appropriate elasticity and sealing. The tube-breaking blade is made of 304 stainless steel and is finely machined and polished to ensure a sharp cutting edge.

[0044] The operating procedure for using the test strip holder of this utility model is as follows:

[0045] Prepare two test tubes containing different reagents (such as sample analysis solution and buffer solution).

[0046] Two test tubes are inserted into the test tube fixing holes 11 of the upper shell 1, ensuring a tight fit between the tubes and the sealing element and the inner wall of the fixing holes 11. During insertion, the bottom sidewall of the test tube contacts the tube-breaking blade, which cuts the test tube wall, allowing the buffer solution to flow into the buffer storage tank 21 of the lower shell 2, while the sample analysis solution flows into the test paper. The buffer solution flows into the test paper through the guide port 211 and mixes with the sample analysis solution, allowing the sample to be tested to be successfully chromatographyd and flow onto the reaction zone of the test paper on the test paper fixing structure 5.

[0047] Wait about five minutes (depending on the test item), and observe the test results through the observation window 4 on the upper shell 1. The transparent partition 41 of the observation window 4 is integrated with the upper shell 1, which can isolate the air and avoid interference from external factors.

[0048] This utility model's test strip holder has undergone multiple tests and can stably fix test tubes. The sealing effect of the seal is excellent, and the liquid leakage rate is extremely low. The tube-breaking blade reliably cuts through the test tube wall, with a success rate of over 99%. Compared with traditional test strip holders, it avoids aerosol contamination, improves detection efficiency, and significantly enhances accuracy and stability. The test strip holder provided by this utility model includes a shell, an observation window, a test tube fixing hole, a seal, and a tube-breaking blade. A reagent adding chamber is formed inside the shell; the observation window is located on the shell and is sealed with a transparent partition; the test tube fixing hole is located on the shell and communicates with the reagent adding chamber; the seal is located at one end of the test tube fixing hole; the tube-breaking blade is located inside the reagent adding chamber and is used to cut the test tube inserted into the reagent adding chamber from the test tube fixing hole. In the sample loading stage, the test strip holder of this utility model eliminates the need to open the test tube cap. Simply insert the test tube directly into the holder through the test tube fixing hole. The sealing component seals the gap between the test tube and the test tube fixing hole, allowing for convenient initiation of the chromatography process. This ensures that the chromatography process remains completely isolated from external air, significantly reducing the risk of aerosol contamination and eliminating false positives caused by aerosol contamination, thus guaranteeing the accuracy of the test results.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. 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The test strip card housing of claim 1, wherein, ​ 3. The test strip card housing of claim 2, wherein, ​ 4. The test strip card housing of claim 3, wherein, ​ 5. The test strip card housing of claim 4, wherein, ​ 6. The test strip card of claim 3, wherein, ​ 7. The test strip card of any one of claims 1-6, wherein the test strip card further comprises a cover. ​ 8. The test strip card of any one of claims 1-6, wherein, ​ 9. The test strip card of any one of claims 1-6, wherein, ​ 10. The test strip card of any one of claims 1-6, wherein, ​

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