Support frame for centrifugal tube and centrifugal tube
By designing a support frame for centrifuge tubes, the problem of blood collection stuck in centrifuge tubes is solved, and the recovery rate and sample efficiency are improved.
Patent Information
- Application Number
- CN202422204340.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-09
AI Technical Summary
In the prior art, blood collection jams are difficult to remove in centrifuge tubes, and the recovery rate is low, resulting in a need of more blood samples to obtain sufficient test results.
A support frame for centrifugal tube is designed, including a body and a bracket. The bracket is fixed to the inner wall of the centrifugal tube. The body forms a through hole through the first arm, the second arm and the third arm to isolate the blood collection card and facilitate its removal.
Through the centrifugal tube support frame, the recovery rate of blood collection card can be improved, reaching more than 90%, and the required blood sample size is reduced.
Smart Images
Figure CN222984401U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a support frame for centrifuge tubes and a centrifuge tube, belonging to the technical field of biological sample detection. Background Art
[0002] At present, immunoblotting is used to detect common allergens in clinical laboratory samples, and extraction and centrifugal separation of blood collection cards are required during the detection process. At present, serum / plasma detection is mostly used to detect allergens in clinical laboratories, and whole blood is required to be centrifuged to obtain test samples. Among them, at least 100 μL of serum is required for multiplex detection, that is, at least more than 200 μL of whole blood.
[0003] Currently, the blood collection card soaked in the extraction solution and the extraction solution are both poured into the inside of the centrifuge tube. In this way, the blood collection card will fall to the bottom of the centrifuge tube and may stick to the inner wall of the centrifuge tube, making it difficult to take out, with a relatively low recovery rate, resulting in the need for more blood samples to obtain sufficient test results. Summary of the Utility Model
[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a support frame for centrifuge tubes and a centrifuge tube. The support frame for centrifuge tubes is placed inside the centrifuge tube, which can isolate the blood collection card, facilitate the taking out of the blood collection card, and improve the recovery rate of the blood collection card.
[0005] To achieve the above purpose, the utility model provides a support frame for centrifuge tubes, which includes a body and a bracket;
[0006] The bracket is arranged on the surface of the body and is used to fix the support frame for centrifuge tubes to the inner wall of the centrifuge tube in the use state;
[0007] The body includes a first arm, a second arm, and a third arm; the first arm and the second arm are respectively fan-shaped, and the two ends of them are connected together;
[0008] The third arm is connected to the middle of the first arm and the second arm;
[0009] A hollow area is formed between the first arm and the second arm, and is separated into two through holes by the third arm, namely a first through hole and a second through hole.
[0010] Centrifuge tubes generally have a variable diameter structure, and the diameter gradually becomes smaller from top to bottom, that is, there is a position where the diameter becomes smaller from top to bottom, that is, there is a variable diameter. After the support frame for centrifuge tubes is placed into the centrifuge tube, it can be fixed by the bracket stuck at this variable diameter.
[0011] In the above-mentioned centrifuge tube support frame, preferably, the support frame includes a first support frame, a second support frame, and a third support frame; where: the first support frame and the third support frame are respectively located at the joints of the first arm and the second arm (one at each of the two ends); the second support frame is located at the middle of the first arm. The first support frame, the second support frame, and the third support frame protrude from the surface of the main body of the support frame, which can play a role in fixing and supporting, and prevent the support frame from deflecting. During use, the support frame faces downward of the main body of the centrifuge tube support frame.
[0012] In the above-mentioned centrifuge tube support frame, both the first arm and the second arm are arc-shaped, and a third arm is connected at the middle of the first arm and the second arm. Here, the "middle" refers to the midpoint of the above-mentioned arc, that is, the vertex.
[0013] In the above-mentioned centrifuge tube support frame, since the radii of the first arm and the second arm are different, there will be a certain hollowed-out area between the first arm and the second arm, and the third arm is located in the middle of this area, thus dividing it into two parts, namely a first through-hole and a second through-hole. During use, the extraction liquid can pass through the first through-hole and the second through-hole to the bottom of the centrifuge tube, while the blood collection card will be caught by the centrifuge tube support frame, thereby realizing the separation of the blood collection card and the extraction liquid. By this method, the separation effect and the recovery rate of the blood collection card can be improved. Through statistics, the recovery rate of the blood collection card can reach more than 90%.
[0014] In the above-mentioned centrifuge tube support frame, preferably, the center of the sector formed by the second arm is a third through-hole. During use, a circle can be formed between the second arm and the inner wall of the relative centrifuge tube for the pipette tip to pass through.
[0015] In the above-mentioned centrifuge tube support frame, preferably, the radius of the sector formed by the outer edge of the first arm is 6.6 - 7 mm.
[0016] In the above-mentioned centrifuge tube support frame, preferably, the width of the first arm is 1.2 - 1.8 mm, more preferably 1.5 mm.
[0017] In the above-mentioned centrifuge tube support frame, preferably, the heights of the first arm and the second arm are respectively 1.2 - 2 mm, more preferably 1.5 mm. The first arm and the second arm generally have the same height.
[0018] In the above-mentioned centrifuge tube support frame, preferably, the radius of the sector formed by the inner edge of the second arm is 4 - 4.5 mm, that is, the diameter of the third through-hole is 4 - 4.5 mm, which can allow a 1 mL pipette tip to pass through. Due to the existence of the third through-hole, after centrifugation is completed, only the blood collection card needs to be taken out, and the pipette tip can suck the liquid through the third through-hole. During this process, the support frame does not need to be taken out.
[0019] In the above-mentioned support frame for centrifuge tubes, preferably, the length of the third support arm is 2 - 2.7 mm, more preferably 2.4 mm.
[0020] In the above-mentioned support frame for centrifuge tubes, preferably, the heights of the first support, the second support and the third support are respectively 3.5 - 5.5 mm, more preferably 4 mm. The first support, the second support and the third support generally have the same height.
[0021] The present utility model also provides a centrifuge tube, wherein the inside of the centrifuge tube is provided with the above-mentioned support frame for centrifuge tubes; the centrifuge tube has a variable diameter structure, and the support frame for centrifuge tubes is movably arranged at the position of the variable diameter structure.
[0022] The centrifuge tube of the present utility model has a variable diameter structure, specifically a structure with a large upper diameter and a small lower diameter (for example, the overall shape of a circular centrifuge tube is an inverted conical shape, and the diameter gradually decreases from top to bottom, or the upper part of the circular centrifuge tube is cylindrical and the lower part becomes an inverted conical shape). After the above-mentioned support frame for centrifuge tubes is placed inside the centrifuge tube, it can be stuck at the corresponding position of the variable diameter structure. Due to the limitation of the variable diameter structure, the support frame for centrifuge tubes can exist stably inside the centrifuge tube without moving. After use, since the support frame for centrifuge tubes is movably connected to the tube wall of the centrifuge tube, it can be taken out very conveniently.
[0023] During use, the support frame for centrifuge tubes is placed inside the centrifuge tube, and then the blood collection card and the extraction solution are poured into the centrifuge tube. The extraction solution will fall to the bottom of the centrifuge tube through the first through hole and the second through hole, and the blood collection card will be caught by the support frame for centrifuge tubes to achieve separation from the extraction solution; when it is necessary to suck the extraction solution, the pipette tip is inserted into the bottom of the centrifuge tube through the third through hole, and then sucking can be carried out.
[0024] Using the support frame for centrifuge tubes provided by the present utility model and the centrifuge tube with this support frame for centrifuge tubes for separation treatment can improve the recovery rate of the blood collection card and can save blood samples. When using a blood collection card for blood collection, generally 5 - 6 dried blood spots are required. Using the centrifuge tube with this support frame for centrifuge tubes of the present utility model can reduce the sample volume to 4 dried blood spots. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 Schematic structural diagram of the support frame for centrifuge tubes provided for Example 1.
[0026] Figure 2 Side view of the support frame for centrifuge tubes provided for Example 1.
[0027] Figure 3 Schematic diagram of a centrifuge tube with a support frame for centrifuge tubes.
[0028] Figure 4 Schematic diagram of the variable-diameter centrifuge tube provided for Example 3.
[0029] Figure 5 Schematic diagram of the variable-diameter centrifuge tube provided for Example 4.
[0030] Description of main attached drawing reference numerals:
[0031] 1. First bracket; 2. Second bracket; 3. Third bracket; 4. Body; 41. First arm; 42. Second arm; 43. Third arm; 5. First through hole; 6. Second through hole; 7. Third through hole; 8. Centrifuge tube; 9. Support frame for centrifuge tube; 10. Inverted conical centrifuge tube; 11. Cylindrical and inverted cylindrical combined centrifuge tube. Detailed implementation manners
[0032] For a clearer understanding of the technical features, objectives, and beneficial effects of the present utility model, the technical solutions of the present utility model will be described in detail below, but it should not be construed as a limitation on the implementable scope of the present utility model.
[0033] Example 1
[0034] This example provides a support frame for a centrifuge tube, and its structure is as shown in Figure 1 and Figure 2 The support frame for the centrifuge tube includes a body 4 and brackets;
[0035] The body 4 includes a first arm 41, a second arm 42, and a third arm 43; the first arm 41 and the second arm 42 are respectively fan-shaped, and the two ends are connected together;
[0036] A third arm 43 is connected to the middle of the first arm 41 and the second arm 42;
[0037] There is a hollow area between the first arm 41 and the second arm 42, and it is divided into two through holes by the third arm 43, namely the first through hole 5 and the second through hole 6; the center of the fan shape formed by the second arm 42 is the third through hole 7;
[0038] The radius of the fan shape formed by the outer edge of the first arm 41 is 7 mm; the radius of the fan shape formed by the inner edge of the second arm 42 is 4.5 mm; the width d1 of the first arm 41 is 1.5 mm; the heights h1 of the first arm 41 and the second arm 42 are respectively 1.5 mm; the length d2 of the third arm 43 is 2.4 mm;
[0039] The bracket is provided at the upper part of the body 4. The bracket includes a first bracket 1, a second bracket 2, and a third bracket 3. The heights h2 of the first bracket 1, the second bracket 2, and the third bracket 3 are 4 mm respectively. The first bracket 1 and the third bracket 3 are respectively located at the joints of the two ends of the first arm 41 and the second arm 42, and the second bracket 2 is located in the middle of the first arm 41.
[0040] Embodiment 2
[0041] This embodiment provides a centrifuge tube 8, inside which there is a centrifuge tube support frame 9 of Embodiment 1, and the specific structure is as Figure 3 shown.
[0042] Embodiment 3
[0043] This embodiment provides an inverted conical centrifuge tube 10, inside which there is a centrifuge tube support frame 9 of Embodiment 1, and the specific structure is as Figure 4 shown.
[0044] The whole of the inverted conical centrifuge tube 10 is in an inverted conical shape. The diameter of the cross-section of the inverted conical centrifuge tube 10 gradually decreases from top to bottom, and the centrifuge tube support frame 9 is stuck at a position adapted to its diameter.
[0045] Embodiment 4
[0046] This embodiment provides a combined cylindrical and inverted cylindrical centrifuge tube 11, inside which there is a centrifuge tube support frame 9 of Embodiment 1, and the specific structure is as Figure 5 shown.
[0047] The upper part of the combined cylindrical and inverted cylindrical centrifuge tube 11 is cylindrical, and the lower part is inverted conical. Among them, the diameter of the cross-section of the inverted conical part gradually decreases from top to bottom, and the centrifuge tube support frame 9 is stuck at a position adapted to its diameter.
Claims
1. A centrifuge tube support frame, characterized in that: The centrifuge tube support frame comprises a body (4) and a support frame; The support is arranged on the surface of the body (4) and is used to fix the centrifuge tube to the inner wall of the centrifuge tube using the support frame when in use; The body (4) comprises a first arm (41), a second arm (42), and a third arm (43); the first arm (41) and the second arm (42) are respectively fan-shaped, and both ends of the first arm (41) and the second arm (42) are connected together; A third arm (43) is connected between the first arm (41) and the second arm (42); There is a hollow area between the first support arm (41) and the second support arm (42), which is divided into two through holes by the third support arm (43), namely a first through hole (5) and a second through hole (6).
2. The centrifuge tube support according to claim 1, characterized in that: The support comprises a first support (1), a second support (2) and a third support (3); wherein: The first bracket (1) and the third bracket (3) are respectively located at the connection between the first support arm (41) and the second support arm (42); The second bracket (2) is located in the middle of the first supporting arm (41).
3. The centrifuge tube support according to claim 1, characterized in that: The center of the sector formed by the second supporting arms (42) is the third through hole (7).
4. The centrifuge tube support according to claim 1, characterized in that: The radius of the sector formed by the outer edge of the first arm (41) is 6.6-7 mm.
5. The centrifuge tube support according to claim 1, characterized in that: The width of the first arm (41) is 1.2-1.8 mm.
6. The centrifuge tube support according to claim 1, characterized in that: The heights of the first support arm (41) and the second support arm (42) are respectively 1.2-2 mm.
7. The centrifuge tube support according to claim 1, characterized in that: The radius of the sector formed by the inner edge of the second arm (42) is 4-4.5 mm.
8. The centrifuge tube support according to claim 1, characterized in that: The length of the third arm (43) is 2-2.7 mm.
9. The centrifuge tube support according to claim 2, characterized in that: The heights of the first bracket (1), the second bracket (2) and the third bracket (3) are respectively 3.5-5.5 mm.
10. A centrifuge tube, characterized in that: The centrifuge tube is provided with a centrifuge tube support frame according to any one of claims 1 to 9; The centrifuge tube has a variable diameter structure, and the centrifuge tube support frame is movably arranged at the position of the variable diameter structure.