A device for the collection of a liquid sample containing genetic material
By employing a dual-sealing structure, an anti-backflow collection head, and negative pressure automatic collection technology, combined with built-in stabilizers and temperature monitoring, the problems of insufficient sealing, complex operation, and sample degradation in liquid sample collection devices have been solved, achieving safe and convenient sample collection and storage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HULUNBUIR THIRD PEOPLES HOSPITAL (HULUNBUIR MENTAL HEALTH CENT)
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-12
AI Technical Summary
Existing liquid sample collection devices suffer from problems such as insufficient sealing, complex operation, lack of genetic material protection, and limited functionality, leading to sample leakage, high risk of cross-infection, high rate of operational errors, and rapid degradation of sample activity.
It adopts a double-sealed structure, built-in anti-backflow sampling head and one-way valve, automatic negative pressure sampling, built-in stabilizer and temperature monitoring, combined with filtration, stratification and labeling functions to achieve strong sealing, convenient operation and protection of sample activity.
It enables the safe transport and storage of liquid samples, reduces the risk of leakage and cross-contamination, simplifies the operation process, ensures that genetic material remains active for 72 hours, and supports integrated processing of filtration, stratification, and labeling.
Smart Images
Figure CN224350660U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biological sample collection technology, specifically to a device for collecting liquid samples containing genetic material. Background Technology
[0002] Liquid sample collection devices are frequently used in healthcare. Currently available liquid sample collection devices, such as blood collection tubes and saliva collection tubes, generally have the following problems:
[0003] First, there is the problem of insufficient sealing, which can easily lead to leakage during transportation or storage, resulting in sample contamination or cross-infection. Second, there is the problem of complex operation: the products generally require forceful aspiration or pressing to collect samples, increasing the risk of operational errors. In addition, most existing products lack the design to protect genetic material, causing samples to degrade rapidly at room temperature. Finally, there is the problem of limited functionality; most products can only complete the collection and cannot simultaneously perform filtering, preservation, or labeling functions.
[0004] In summary, there is a need for an integrated, well-sealed, easy-to-operate liquid collection device that can better protect the activity of the sample. Utility Model Content
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is to provide a device for collecting liquid samples containing genetic material, including a collection tube and a sealing cap sealed at the bottom of the collection tube. A piston cap is integrally provided at the other end of the collection tube. An anti-backflow collection head is detachably provided on the sealing cap. The anti-backflow collection head is connected to the inside of the collection tube. The collection tube is pre-filled with a freeze-drying anticoagulant or stabilizer. A separation adhesive layer is provided at the bottom of the collection tube.
[0006] In the above scheme, the anti-backflow sampling head is equipped with a one-way valve.
[0007] In the above scheme, the anti-backflow sampling head has a built-in filter layer.
[0008] In the above scheme, the bottom end of the collection tube and the sealing cap are respectively provided with internal and external threads, and the sealing cap is provided with a silicone sealing plug.
[0009] In the above scheme, a temperature indicator label is affixed to the collection tube, and an identification groove is provided on the top of the piston cap.
[0010] In the above scheme, the inner wall of the collection tube is coated with a hydrophobic coating.
[0011] In the above scheme, the outer wall of the collection tube is provided with anti-slip texture and capacity scale lines.
[0012] In the above scheme, the collection tube, the sealing cap, and the anti-backflow collection head are arranged coaxially.
[0013] The beneficial effects of this utility model are as follows:
[0014] The double-sealed structure prevents leakage during transportation and reduces the risk of biological contamination;
[0015] Automatic negative pressure data acquisition simplifies the process and is suitable for non-professionals.
[0016] Built-in stabilizers and temperature monitoring ensure that genetic material remains active for 72 hours;
[0017] It supports integrated filtering, stratification, and labeling, reducing subsequent processing steps. Attached Figure Description
[0018] Figure 1 This is a side view of the overall structure of this utility model;
[0019] Figure 2 for Figure 1 Side view of the structure after disassembling the anti-backflow acquisition head. Detailed Implementation
[0020] The present invention will now be described in detail with reference to the accompanying drawings.
[0021] This utility model discloses a device for collecting liquid samples containing genetic material. Those skilled in the art can refer to the content of this document and appropriately modify the process parameters to achieve the desired result. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this utility model. Furthermore, those skilled in the art can clearly modify or appropriately alter and combine the content described herein without departing from the content, spirit, and scope of this utility model to implement and apply its technology.
[0022] In this utility model, unless otherwise stated, the scientific and technical terms used herein have the meanings commonly understood by those skilled in the art.
[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0025] It should be noted that in the description of this utility model, the terms "first" and "second" are used only for the convenience of describing different components and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one of those features.
[0026] like Figure 1 and Figure 2 As shown, the present invention provides a device for collecting liquid samples containing genetic material, comprising a collection tube 1 and a sealing cap 2 sealed at the bottom of the collection tube 1. The bottom of the collection tube 1 and the sealing cap 2 are respectively provided with internal and external threads, and the sealing cap 2 is provided with a silicone sealing plug inside, forming a double sealing structure to prevent liquid leakage.
[0027] The collection tube 1 is made of medical-grade transparent plastic, with anti-slip texture and volume graduation lines on the outer wall. The inner wall of the collection tube 1 is coated with a hydrophobic coating to reduce sample adhesion. The bottom of the collection tube 1 is provided with a separation gel layer 9 for separating plasma and blood cells.
[0028] The other end of the collection tube 1 is integrally provided with a piston cap 3. By pressing, negative pressure is triggered to automatically draw in liquid samples. The sealing cap 2 is detachably provided with an anti-backflow collection head 4. The anti-backflow collection head 4 is connected to the inside of the collection tube 1, and the collection tube 1, the sealing cap 2 and the anti-backflow collection head 4 are arranged coaxially.
[0029] The anti-backflow sampling head 4 adopts a detachable conical head. Inside the anti-backflow sampling head 4, from bottom to top, there is a one-way valve 5 and a filter layer 6. The one-way valve 5 only allows liquid to flow into the sampling tube in one direction to avoid backflow and contamination. The filter layer 6 is used to filter solid impurities or separate specific components such as cell debris.
[0030] Furthermore, a temperature indicator label is affixed to the collection tube 1, preferably made of temperature-sensitive color-changing test paper. The label changes color when the temperature inside the tube exceeds 4°C, indicating sample invalidation. An identification slot 7 is provided on the top of the piston cap 3 for attaching sample labels or QR codes.
[0031] The collection tube 1 is pre-filled with a freeze-drying anticoagulant or DNA / RNA stabilizer 8, which can dissolve upon contact with liquid to protect the activity of genetic material.
[0032] This invention features a simple structure, strong sealing, and convenient operation. It can effectively prevent sample leakage and degradation, and supports temporary storage and labeling of samples.
[0033] The method of using this utility model is as follows:
[0034] During collection, the anti-backflow collection head is installed at the bottom of the collection tube. Pressing the piston cap creates negative pressure, allowing liquid to enter the tube through the one-way valve. The sample separates into layers upon contact with the separating gel and simultaneously mixes with a pre-prepared stabilizer to prevent genetic material degradation. After collection, the sealing cap is tightened to create an airtight seal. Sample information is entered through the identification area, and a temperature indicator label monitors storage conditions in real time.
[0035] The beneficial effects of this utility model are as follows:
[0036] The double-sealed structure prevents leakage during transportation and reduces the risk of biological contamination;
[0037] Automatic negative pressure data acquisition simplifies the process and is suitable for non-professionals.
[0038] Built-in stabilizers and temperature monitoring ensure that genetic material remains active for 72 hours;
[0039] It supports integrated filtering, stratification, and labeling, reducing subsequent processing steps.
[0040] This invention solves the problems of easy leakage, complicated operation, and easy sample degradation of traditional devices by using an anti-backflow collection head, negative pressure suction, double sealing structure, and built-in stabilizer. It is suitable for on-site use in medical testing, forensic medicine, and other fields.
[0041] This utility model is not limited to the above-described preferred embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.
Claims
1. A device for collecting liquid samples containing genetic material, characterized in that, The device includes a collection tube and a sealing cap at the bottom of the collection tube. A piston cap is integrally provided at the other end of the collection tube. An anti-backflow collection head is detachably provided on the sealing cap. The anti-backflow collection head is connected to the inside of the collection tube. The collection tube is pre-filled with a freeze-drying anticoagulant or stabilizer. A separation adhesive layer is provided at the bottom of the collection tube.
2. The apparatus for collecting liquid samples containing genetic material as described in claim 1, characterized in that, The anti-backflow sampling head is equipped with a one-way valve.
3. The apparatus for collecting liquid samples containing genetic material as described in claim 1, characterized in that, The anti-backflow sampling head has a built-in filter layer.
4. The apparatus for collecting liquid samples containing genetic material as described in claim 1, characterized in that, The bottom end of the collection tube and the sealing cap are respectively provided with internal and external threads, and the sealing cap is provided with a silicone sealing plug.
5. The apparatus for collecting liquid samples containing genetic material as described in claim 1, characterized in that, A temperature indicator label is affixed to the collection tube, and an identification groove is provided on the top of the piston cap.
6. The apparatus for collecting liquid samples containing genetic material as described in claim 1, characterized in that, The inner wall of the collection tube is coated with a hydrophobic coating.
7. The apparatus for collecting liquid samples containing genetic material as described in claim 1, characterized in that, The outer wall of the collection tube is provided with anti-slip texture and capacity scale lines.
8. The apparatus for collecting liquid samples containing genetic material as described in claim 1, characterized in that, The collection tube, sealing cap, and anti-backflow collection head are arranged coaxially.