A nucleic acid sampling device
By designing a plate-shaped swab head and a guide groove guide post in combination, the problems of limited swab head capacity and uneven distribution in existing nucleic acid sampling devices are solved, achieving full contact between the nucleic acid dissolving solution and the swab head, improving detection efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN DAJIA MEDICAL TESTING CO LTD
- Filing Date
- 2025-03-27
- Publication Date
- 2026-07-31
AI Technical Summary
In existing nucleic acid sampling devices, the sampling tube has a limited capacity for swab heads, and the distribution is uneven, resulting in insufficient contact between the nucleic acid dissolving solution and the swab head, which affects the detection efficiency. In addition, conventional swabs are large in volume, difficult to sample, and costly, and are prone to cross-contamination.
Design a nucleic acid sampling device that includes a plate-shaped swab head and a detachable long rod. Through the cooperation of the guide groove and the guide column, the swab head is evenly distributed in the sampling tube and fully contacts the dissolving solution. It is fixed by the limiting sleeve, so as to achieve effective separation and reuse of the swab head.
It improves the efficiency of nucleic acid testing, reduces testing costs, avoids cross-contamination, achieves uniform distribution and full contact of swab heads, and improves the reliability of sample processing.
Smart Images
Figure CN224572834U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical testing equipment technology, and more specifically, to a nucleic acid sampling device. Background Technology
[0002] In the field of medical testing, molecular nucleic acid testing is becoming increasingly widespread, and molecular detection technology has been continuously improved, with increasing precision and lower detection limits. Nucleic acid testing includes, but is not limited to, the detection of viruses, gene mutations, and nucleic acid biomarkers; all tests begin with the collection of nucleic acids.
[0003] Currently, the sampling tubes on the market can only accommodate a limited number of nucleic acid swab heads. A 10ml sampling tube can hold at most a single-digit number of swab heads. Moreover, the sampling swabs are not evenly distributed inside the sampling tube and tend to accumulate at the opening or bottom of the tube. This results in insufficient contact between the nucleic acid dissolving solution and the swab head, which also hinders the aspiration of the dissolving solution from the sample tube during sample processing, leading to missed detections and serious consequences.
[0004] Meanwhile, sampling swabs have disadvantages such as low collection efficiency, large size, high sampling difficulty, difficulty in bending, and easy cross-contamination or leakage; conventional nucleic acid sampling swabs mean that a standard sampling tube cannot hold more sample volume; bending the end easily causes leakage, which can lead to serious cross-contamination; nucleic acid is not completely dissolved in nucleic acid extraction solution; when aspirating nucleic acid dissolution solution during sample processing, the swab tip can clog the tube opening, making it difficult for the pipette tip to aspirate deeply; conventional swabs are large in size, and the production and processing costs are relatively high. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a nucleic acid sampling device, which, through the combined use of sampling swabs and sampling tubes, allows the sampling tube to accommodate more swab heads and enables them to be evenly distributed inside the sampling tube and fully contact the nucleic acid dissolving solution, thereby improving detection efficiency and reducing detection costs.
[0006] The solution adopted by this utility model to solve the technical problem is:
[0007] A nucleic acid sampling device includes a sampling swab and a sampling tube used in conjunction with the sampling swab;
[0008] The sampling swab includes a swab head with a plate-like structure and synthetic fibers, and a long rod detachably connected to the swab head;
[0009] The sampling tube includes a tube body for holding a swab head and forming a gap between the inner side and the outer side of the swab head, and a guide post disposed in the tube body and used in conjunction with the swab head. The guide post is coaxially disposed with the tube body; a guide groove is provided on the swab head for use with the guide post.
[0010] In some possible implementations, the long rod is screwed into the swab head and is coaxially arranged with the guide groove.
[0011] In some possible implementations, an internal threaded hole coaxial with and communicating with the guide groove is provided on the side of the swab head near the long rod, and an external thread that mates with the internal threaded hole is provided on the outside of the long rod.
[0012] In some possible implementations, the swab head is disc-shaped, and the guide groove is located on the side of the swab head away from the long rod and has a polygonal cross-section.
[0013] In some possible implementations, the swab head includes a disc-shaped body and a groove disposed on the outer side of the body.
[0014] In some possible implementations, the grooves are in multiple sets and are evenly distributed along the circumference of the body; a protrusion is formed between two adjacent sets of grooves.
[0015] In some possible implementations, the guide post is cylindrical, and the tube body is provided with an inner protrusion that mates with the groove.
[0016] In some possible implementations, the groove is a semi-circular groove.
[0017] In some possible implementations, the sampling tube may further include an end cap for sealing the tube body and which is detachably connected to the tube body.
[0018] In some possible implementations, a limiting sleeve is provided on the end cap that fits onto the outside of the guide post when the tube body is closed.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] This invention features a detachable connection between the swab head and the long rod, allowing the swab head to be placed inside the sampling tube after sampling by separating the two, thus reducing the space occupied by each set of sampling swabs inside the sampling tube; the long rod is recyclable and reusable, reducing sampling costs.
[0021] This invention uses a guide post with a polygonal cross-section and a guide groove to guide the swab head and separate the swab head from the long rod under the constraint of the polygonal structure. Multiple swab heads are stacked on the guide post, which makes the swab heads evenly distributed in the sampling tube, so that all swab heads can fully contact the nucleic acid dissolving solution and effectively achieve absorption.
[0022] This invention effectively prevents the swab head from rotating with the long rod when the long rod rotates around its axis and separates from the swab head by the cooperation of the inner protrusion and the groove, thus preventing the swab head from being unable to separate from the long rod.
[0023] This invention uses the cooperation of a limiting sleeve and a guide post to fix the swab head on the outside of the guide post after the tube body is filled with swab heads, thus preventing it from slipping off the guide post. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of the sampling swab in this utility model when the swab head is shaped like a plum blossom.
[0025] Figure 2 In this utility model and Figure 1 Schematic diagram of the sampling tube used in conjunction with the sampler;
[0026] Figure 3 for Figure 2 Top view;
[0027] Figure 4 This is a schematic diagram of the structure of the end cap of this utility model;
[0028] Figure 5 This is a schematic diagram of the structure of the swab head being mounted inside the sampling tube when it is disc-shaped;
[0029] The components are: 1. Sampling swab; 11. Swab head; 110. Guide groove; 111. Groove; 112. Protrusion; 12. Long rod; 2. Sampling tube; 20. Tube body; 201. Inner protrusion; 21. Guide post; 3. End cap; 30. Limiting sleeve. Detailed Implementation
[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., 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 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. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] The present invention will now be described in detail.
[0032] like Figures 1-5 As shown:
[0033] A nucleic acid sampling device includes a sampling swab 1 and a sampling tube 2 used in conjunction with the sampling swab 1;
[0034] The sampling swab 1 includes a swab head 11 with a plate-like structure and synthetic fibers, and a long rod 12 detachably connected to the swab head 11; the long rod 12 is coaxial with the swab head 11 and perpendicular to each other;
[0035] The synthetic fibers on the swab head 11 enable nucleic acids to bind better to cells, thereby effectively capturing the nucleic acid carriers of patients;
[0036] The long pole 12 is used by the sampling personnel to perform handheld sampling operations, so that the swab head 11 can capture the nucleic acid carriers of the patient;
[0037] The sampling tube 2 includes a tube body 20 for receiving a swab head 11 with a gap between its inner side and the outer side of the swab head 11, and a guide post 21 disposed inside the tube body 20 and used in conjunction with the swab head 11. The guide post 21 is coaxially arranged with the tube body 20. A guide groove 110 is provided on the swab head 11 to cooperate with the guide post 21 and to allow the swab head 11 to be fitted onto the outer side of the guide post 21. The guide post 21 is coaxially arranged with the tube body 20. The length of the guide post 21 is less than the axial length of the tube body 20.
[0038] After sampling, the long rod 12 is separated from the swab head 11. Then, the swab head 11 is controlled to move along the axial direction of the guide post 21 and fall into the tube body 20 through the cooperation of the guide post 21 and the guide groove 110. A gap is formed between the outer side of the swab head 11 and the inner side of the tube body 20. The above operation is repeated for each sampling, so that multiple sets of swab heads 11 are stacked in the tube body 20. This makes all the swab heads 11 evenly distributed and can fully contact the nucleic acid dissolving solution in the tube body 20, so that the nucleic acid is completely dissolved in the nucleic acid extraction solution.
[0039] In some possible implementations, in order to effectively achieve the detachable connection between the long rod 12 and the swab head 11, so that the long rod 12 and the swab head 11 can be effectively separated, and the swab head 11 can be installed in the tube body 20, the long rod 12 and the swab head 11 are screwed together and coaxially arranged with the guide groove 110.
[0040] In some possible implementations, an internal threaded hole coaxial with and communicating with the guide groove 110 is provided on the side of the swab head 11 near the long rod 12, and an external thread that cooperates with the internal threaded hole is provided on the outside of the long rod 12.
[0041] Furthermore, an annular boss coaxial with the guide groove 110 is provided on the side of the swab head 11 away from the guide groove 110. The annular boss can create a gap between adjacent swab heads 11, so that each set of swab heads 11 can make full contact with the guide groove 110.
[0042] The internal threaded hole is located inside the annular boss and communicates with the guide groove 110. The long rod 12 has a threaded section near the wiping head 11, and the external thread is located on the threaded section.
[0043] Of course, an external thread can be provided on the outside of the annular boss, and an internal threaded hole can be provided at the end of the long rod 12 near the swab head 11 to achieve screw connection. The through hole formed inside the annular boss will communicate with the guide groove 110, so that the guide post 21 can pass through the annular boss and be fitted into the swab head 11.
[0044] In some possible implementations, such as Figure 5 As shown, the swab head 11 is disc-shaped, and the cross-section of the tube body 20 will be annular. A gap will be formed between the outer side of the disc-shaped swab head 11 and the inner side of the tube body 20.
[0045] The guide groove 110 is located on the side of the swab head 11 away from the long rod 12 and has a polygonal cross-section. The guide groove 110 is polygonal and not circular. The cross-section of the guide post 21 is adapted to the guide groove 110. For example, if the guide groove 110 is triangular, the cross-section of the guide post 21 is also triangular; if the guide groove 110 is pentagonal, the cross-section of the guide post 21 is also pentagonal. This arrangement ensures that when the long rod 12 is separated from the swab head 11, the swab head 11 is first fitted onto the outside of the guide post 21 through the guide groove 110. Then, the long rod 12 is turned. Due to the polygonal structure, the swab head 11 is effectively restricted from rotating with the long rod 12 around its axis, thus preventing the swab head 11 from being unable to separate from the long rod 12.
[0046] In some possible implementations, the swab head 11 includes a disc-shaped body and a groove 111 disposed on the outer side of the body; the tube body 20 is provided with an inner protrusion 201 that cooperates with the groove 111.
[0047] The groove 111 and the inner protrusion 201 cooperate to restrict the swab head 11 from rotating when the long rod 12 is turned; at this time, the guide post 21 is cylindrical and the guide groove 110 is a cylindrical hole.
[0048] In some possible implementations, the grooves 111 are in multiple sets and are evenly arranged along the circumference of the main body; a protrusion 112 is formed between two adjacent sets of grooves 111; the grooves 111 are semi-circular grooves.
[0049] like Figure 1 As shown, there are four sets of grooves 111, which are evenly arranged along the circumference of the disc-shaped main body, thus forming a plum blossom-shaped swab head 11; when the swab head 11 is plum blossom-shaped, the cavity inside the tube body 20 used to hold the swab head 11 will also be plum blossom-shaped.
[0050] In some possible implementations, the sampling tube 2 further includes an end cap 3 for sealing the tube body 20 and detachably connected to the tube body 20; a limiting sleeve 30 is provided on the end cap 3, which is fitted onto the outside of the guide post 21 when the tube body 20 is sealed.
[0051] After a batch of swab heads 11 are stacked inside the tube body 20, the end cap 3 is put on. At this time, the limiting sleeve 30 will be fitted on the outside of the guide post 21, thereby preventing the swab head 11 from slipping out of the gap formed between the guide post 21 and the end cap 3 near the end cap 3.
[0052] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.
Claims
1. A nucleic acid sampling device, characterized by, This includes sampling swabs and sampling tubes used in conjunction with the sampling swabs; The sampling swab includes a swab head with a plate-like structure and synthetic fibers, and a long rod detachably connected to the swab head; The sampling tube includes a tube body for holding a swab head and forming a gap between the inner side and the outer side of the swab head, and a guide post disposed in the tube body and used in conjunction with the swab head. The guide post is coaxially disposed with the tube body; a guide groove is provided on the swab head for use with the guide post.
2. The nucleic acid sampling device of claim 1, wherein, The long rod is screwed into the swab head and is coaxially arranged with the guide groove.
3. The nucleic acid sampling device of claim 2, wherein, An internal threaded hole, coaxial with and connected to the guide groove, is provided on the side of the swab head near the long rod, and an external thread, which mates with the internal threaded hole, is provided on the outside of the long rod.
4. The nucleic acid sampling device according to any one of claims 1 to 3, wherein, The swab head is disc-shaped, and the guide groove is located on the side of the swab head away from the long rod and has a polygonal cross-section.
5. The nucleic acid sampling device of claim 2, wherein, The swab head includes a disc-shaped body and a groove on the outer side of the body.
6. The nucleic acid sampling device of claim 5, wherein, The grooves are in multiple groups and are evenly arranged along the circumference of the main body; a protrusion is formed between two adjacent groups of grooves.
7. A nucleic acid sampling device according to claim 5, characterized in that, The guide post is cylindrical, and the tube body is provided with an inner protrusion that cooperates with the groove.
8. The nucleic acid sampling device of claim 5, wherein, The groove is a semi-circular groove.
9. The nucleic acid sampling device of claim 1, wherein, The sampling tube also includes an end cap for sealing the tube body and which is detachably connected to the tube body.
10. The nucleic acid sampling device of claim 9, wherein, A limiting sleeve is provided on the end cap, which is fitted onto the outside of the guide post when the tube body is closed.