Sample tube
The design of the push-type cover structure solves the problem that the existing centrifuge tube requires two-handed operation, and enables the cover to be quickly opened and closed with one hand, reducing the cross-contamination rate and improving experimental efficiency and sample safety.
Patent Information
- Application Number
- CN202422343506.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Existing centrifuge tubes require both hands to open and close the lid during use, which increases the number of operating steps, occupies both hands, reduces work efficiency, and poses a risk of sample cross-contamination.
The push-type cover structure is adopted. Through the cooperation of the push rod and the spring, the cover can be opened and closed with one hand. Combined with the limit rod and guide column, it ensures the sealing performance and reduces the number of times the cover is opened and the exposure time.
It improves the efficiency and convenience of experimental operations, reduces the cross-contamination rate of samples, improves sample safety and experimental convenience, and reduces wrist and finger fatigue.
Smart Images
Figure CN223381647U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of experimental equipment, in particular to a sample tube. Background Art
[0002] In laboratories, centrifuge tubes are commonly used as sample containers for separating and preparing various biological samples. They are typically equipped with removable lids or integrated caps to prevent sample contamination and volatilization. Common closure methods include press caps and screw caps. Existing centrifuge tubes suffer from the following issues: The lids must be manually pushed open or twisted open before each use, and then replaced with both hands afterward. Consequently, opening and closing the tubes requires both hands during use, increasing the number of steps and occupying both hands, preventing other operations from taking place simultaneously and reducing work efficiency. Utility Model Content
[0003] In order to solve the above problems, the present invention provides a sample tube, including a tube body and a cover assembly, the cover assembly including a cover body, a baffle, a pressing rod and a spring, the cover body is connected to the tube body, a first through hole is provided on the cover body, a second through hole is provided on the baffle, one end of the pressing rod is connected to the baffle, and the other end extends to the outside of the cover body, the baffle is movably arranged on the cover body and a spring is mounted on the pressing rod connected to the baffle, so that the cover has an open position in which the second through hole is connected to the first through hole and a closed position in which the first through hole is blocked, the first end of the spring is connected to the pressing rod, and the second end is connected to the cover body.
[0004] Furthermore, a limiting rod is provided on the cover body, the axial direction of the limiting rod is perpendicular to the axial direction of the pressing rod, and a third through hole is formed on the limiting rod for the shielding plate and / or the pressing rod to pass through.
[0005] Furthermore, the second end of the spring is connected to the limiting rod.
[0006] Furthermore, the shielding plate is provided with two groups of limit blocks, the two groups of limit blocks are respectively provided on both sides of the limit rod, and the distance between the two groups of limit blocks is equal to the maximum movable stroke of the shielding plate.
[0007] Furthermore, there are two limit rods, which are arranged in parallel and spaced apart, and the limit rod away from the pressing rod is located on the travel path of the shielding plate.
[0008] Furthermore, a guide column is provided on the cover body, and the pressing rod is guided and matched with the guide column.
[0009] Furthermore, the second end of the spring is connected to the guide post.
[0010] Furthermore, the cover body is detachably connected to the tube body.
[0011] Furthermore, the cover body and the tube body are an integrated structure.
[0012] Furthermore, a measuring scale is provided on the tube body.
[0013] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:
[0014] 1) The sample tube provided by the present invention adopts a push-type cover structure, which is easy to operate, reduces the number of times the cover is opened and the exposure time, and effectively reduces the cross-contamination rate of the sample while facilitating sample removal, significantly improving the safety of the sample, and improving the efficiency and convenience of experimental operations; the push-type cover structure reduces fatigue on the wrists and fingers of the experimenter.
[0015] 2) The sample tube provided by the present invention has a limit rod on the cover body for limiting the position of the shielding plate, which can ensure the sealing performance between the shielding plate and the cover body and prevent the sample from being contaminated. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 A schematic diagram of the structure of the sample tube provided by the utility model;
[0018] Figure 2 Schematic diagram of the structure of the cover assembly provided in Example 1 Figure 1 ;
[0019] Figure 3 Schematic diagram of the structure of the cover assembly provided in Example 1 Figure 2 ;
[0020] Figure 4 This is a schematic structural diagram of the cover assembly provided in Example 2.
[0021] 10-tube body; 11-measuring scale; 12-label; 20-cover assembly; 21-cover body; 211-first through hole; 22-shielding plate; 221-second through hole; 23-pressing rod; 231-button; 24-spring; 25-limiting rod; 26-limiting block; 27-guide column. DETAILED DESCRIPTION
[0022] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention. In the drawings, the size and relative sizes of some parts may be exaggerated for clarity.
[0023] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connection" and "connected" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] In the description of the present invention, the terms "up", "down", "left", "right", "front", "back", "center", "horizontal", "vertical", "top", "bottom", "inside", "outside" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0025] Furthermore, in the description of this utility model, the terms "first" and "second" are used solely to distinguish between the features in the description and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Furthermore, features designated as "first" or "second" may explicitly or implicitly include one or more of the features.
[0026] As the instruction manual Figure 1As shown, the present invention provides a sample tube, comprising a tube body 10 and a cover assembly 20, wherein the cover assembly 20 comprises a cover body 21, a baffle 22, a pressing rod 23 and a spring 24, wherein the cover body 21 is connected to the tube body 10, a first through hole 211 is provided on the cover body 21, a second through hole 221 is provided on the baffle 22, one end of the pressing rod 23 is connected to the baffle 22, and the other end extends to the outside of the cover body 21, the baffle 22 is movably arranged on the cover body 21, and a spring 24 is mounted on the pressing rod 23 connected to the baffle 22, thereby having an open position in which the second through hole 221 is connected to the first through hole 211 and a closed position in which the first through hole 211 is blocked, and a first end of the spring 24 is connected to the pressing rod 23, and a second end is connected to the cover body 21. In this embodiment, when the baffle plate 22 moves to the open position, the second through hole 221 is connected to the first through hole 211, and the spring 24 is in a stressed state. At this time, the spring is compressed or stretched; when the baffle plate 22 moves to the closed position, the second through hole 221 is misaligned with the first through hole 211, the baffle plate 22 blocks the first through hole 211, and the spring 24 is in a free state.
[0027] Specifically, the tube body 10 is used to hold a sample. An opening is provided at the upper end of the tube body 10. The cover body 21 is connected to the opening of the tube body 10, and the tube body 10 is sealed by the cover body 21. A first through hole 211 is provided on the cover body 21, and a second through hole 221 is provided on the shielding plate 22. The area of the shielding plate 22 excluding the second through hole 221 is larger than the area of the first through hole 211, so that the shielding plate 22 can block the first through hole 211 and complete the closure of the cover body 21. In this embodiment, the shielding plate 22 is provided on the inner side of the cover body 21, where the inner side refers to the side of the cover body 21 facing the tube body 10. A pressing rod 23 connected to the shielding plate 22 extends to the outside of the cover body 21. A spring 24 is sleeved on the pressing rod 23. The first end of the spring 24 is connected to the pressing rod 23, and the second end is connected to the cover body 21. Before pressing, the spring 24 is in a free state, the second through hole 221 is misaligned with the first through hole 211, and the baffle 22 blocks the first through hole 211 to achieve the closure of the cover body 21; for sampling, the pressing rod 23 is pressed, the baffle 22 moves relative to the cover body 21, the second through hole 221 is aligned and connected with the first through hole 211, the cover body 21 is opened, and the sampling operation can be carried out. At this time, the spring 24 is in a stressed state, and the spring 24 can be in a stretched state or a compressed state, depending on the installation position of the spring 24. After releasing the pressing rod 23, the spring 24 is reset to the closed state of the cover body 21 under the action of elasticity.
[0028] The sample tube of the present application is suitable for use as a matching sample tube for an inductively coupled plasma mass spectrometer (or a sampling device).
[0029] Preferably, the second end of the spring 24 is connected to the cover body 21, including that the second end of the spring 24 is directly connected to the cover body 21, or is connected to other structures on the cover body 21, to ensure that during the pressing operation, the spring 24 is stretched or compressed and is in a stressed state, and can be restored to its original state with the help of elastic action.
[0030] Preferably, a button 231 is provided at one end of the pressing rod 23 away from the shielding plate 22 , and the size of the button 231 is larger than the size of the hole on the cover body 21 for the pressing rod 23 to pass through.
[0031] In an optimized embodiment, the tube body 10 is cylindrical with a tapered bottom to accommodate different experimental requirements. The tube body is preferably made of a material that is resistant to high temperatures and chemical corrosion to ensure stability and durability during the experiment. For example, the tube body can be made of polypropylene (PP), and the cover assembly can be made of the same material as the tube body.
[0032] Preferably, the tube body 10 is provided with a measuring scale 11, arranged along the height direction of the tube body 10, for accurately measuring the volume of the sample, ensuring the consistency and accuracy of the sample amount during the experiment. The measuring scale 11 can be produced on the tube body 10 by screen printing, laser engraving, or machining. Tube bodies 10 of different capacities are provided according to different capacities.
[0033] Preferably, the tube body 10 is provided with a label 12 having a writing area for the experimenter to mark sample information, such as sample number, date, experimental conditions, etc. The label 12 is made on the tube body 10 by screen printing, laser engraving, or machining.
[0034] Preferably, a thread is provided at the opening of the tube body 10 , and the cover body 21 is threadedly connected to the tube body 10 .
[0035] In some embodiments, the cover body 21 and the tube body 10 are an integrated structure.
[0036] The cam 23 is provided with a plurality of through holes 211, and the two ends of the plurality of through holes 211 are connected to the cam 23, and the plurality of through holes 211 are connected to the cam 23, so that the plurality of through holes 211 can be opened and closed. The push-type cover structure in this embodiment adopts a spring-driven mechanism to provide a fast, one-handed sealing mechanism, which greatly improves the efficiency and convenience of experimental operations, ensures that the cover body 21 can be immediately sealed with the tube body after each press, effectively preventing the volatilization of the sample and the intrusion of external contaminants, and has good sample consistency.
[0037] Preferably, the limiting rod 25 is disposed on the inner side of the cover body 21, and can be disposed near the button 231 or away from the button 231. The limiting rod 25 is disposed away from the button 231, i.e., the limiting rod 25 is disposed on the side of the shielding plate 22 away from the pressing rod 23. The limiting rod 25 is located on the travel path of the shielding plate 22. The third through hole is for the shielding plate 22 to pass through, and its size is compatible with the shielding plate 22. The limiting rod 25 is disposed near the button 231, i.e., the limiting rod 25 is disposed on the side of the shielding plate 22 near the pressing rod 23. The third through hole is for the pressing rod 23 to pass through, or for both to pass through. The corresponding position of the third through hole and the pressing rod 23 is compatible with the pressing rod 23, and both sides of the third through hole are compatible with the shielding plate 22, thereby ensuring that the shielding plate 22 can move axially along the pressing rod 23.
[0038] The first end of the spring 24 is connected to the pressing rod 23, and the second end can be directly connected to the cover body 21, or can be connected to the limiting rod. The arrangement of the spring 24 is detailed in Example 1 and Example 2.
[0039] Example 1
[0040] As the instruction manual Figure 2 and 3 FIG. 2 is a schematic diagram of the structure of the inner side of the cover body 21, wherein: Figure 2 This is a schematic diagram of the cover body in the closed state (the spring is in a free state). Figure 3The diagram below shows the cover body in the open state (with the spring under stress). The first through hole 211 is located in the middle of the cover body 21, and the second through hole 221 is located on one side of the shielding plate 22. The second through hole 221 and the first through hole 211 have the same size. The spring 24 is mounted on the pressing rod 23 and located inside the cover body 21. The first end of the spring 24 is connected to the pressing rod 23, and the second end is connected to the limiting rod 25. When the pressing rod is pressed, the pressing rod drives the shielding plate to move until the second through hole is connected to the first through hole. At this time, the spring 24 is in a compressed state (the spring is located on the side of the limiting rod close to the button) or a stretched state (the spring is located on the side of the limiting rod away from the button), that is, the spring 24 is under stress. When the pressing rod 23 is released, the shielding plate 22 returns to its original position under the elastic action of the spring 24.
[0041] In an optimized embodiment, two limiting rods 25 are positioned inside the lid body 21. These rods 25 are spaced apart and arranged in parallel. The limiting rod 25 farther from the pressing rod 23 is located in the travel path of the shielding plate 22, ensuring that the shielding plate 22 always passes through the third through-hole of the limiting rod 25 for positioning. The press-type lid structure reduces the number of lid openings and exposure time. In one practical application, the cross-contamination rate was reduced from 1.5% compared to using traditional centrifuge tubes to 0.2%, significantly improving sample safety.
[0042] Preferably, the shielding plate 22 is provided with two sets of limit blocks 26, which are respectively arranged on either side of the limit rod 25. In this embodiment, the two sets of limit blocks 26 are respectively arranged on either side of the limit rod 25 away from the button 231, and the distance between the two sets of limit blocks 25 is equal to the maximum movable stroke of the shielding plate 22. When the spring 24 is in a free state, one of the limit blocks 26 abuts against the limit rod 25. When the spring 24 is in a stressed state and the second through hole 221 is connected to the first through hole 211, the other limit block 26 abuts against the limit rod 25. During the movement of the shielding plate 22, the limit blocks 26 can limit the travel of the shielding plate 22 and also act as a buffer to prevent the shielding plate 22 from moving beyond the limit rod 25 and affecting the performance of the cover assembly.
[0043] Example 2
[0044] As the instruction manual Figure 4 As shown, this is a schematic diagram of the structure of the inner side of another cover body 21. The spring 24 is in a stressed state. The first end of the spring 24 is connected to the pressing rod 23, and the other end is connected to the cover body 21. At this time, the baffle 22 moves to the second through hole 221 and is connected to the first through hole 211. The spring 24 is in a stretched state. The pressing rod 23 is released, the spring is reset, and the cover body is closed.
[0045] Preferably, in this embodiment, a limiting rod 25 may also be provided on the inner side of the cover body 21 . Please refer to Embodiment 1 for details, which will not be described again here.
[0046] In an optimized embodiment, a guide post 27 is further provided on the cover body 21, and the pressing rod 23 is guided and cooperated with the guide post 27. Specifically, the guide post 27 is coaxially arranged with the pressing rod 23, and the pressing rod 23 passes through the guide post 27. The guide post 27 is connected to the inner side of the cover body 21 and is provided corresponding to the pressing rod 23. The pressing rod 23 passes through the guide post 27. On the one hand, the guide post 27 can be used to guide the pressing rod 23, further limiting the movable path of the pressing rod 23 on the basis of the limiting rod 25. On the other hand, it can increase the strength of the cover body 21 at the connection between the pressing rod 23 and the cover body 21. Of course, in Example 1, the guide post 27 can also be provided on the inner side of the cover body 21.
[0047] In an optimized embodiment, the second end of the spring 27 is connected to the guide post 27 .
[0048] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0049] Those skilled in the art will appreciate that the present invention may be implemented in many other specific forms without departing from the spirit and scope of the present invention. Although embodiments of the present invention have been described, it should be understood that the present invention should not be limited to these embodiments, and those skilled in the art may make changes and modifications within the spirit and scope of the present invention as defined by the appended claims.
Claims
1. A sample tube, comprising a tube body and a cover assembly, characterized in that: The cover assembly includes a cover body, a baffle, a pressing rod and a spring. The cover body is connected to the tube body. A first through hole is provided on the cover body, and a second through hole is provided on the baffle. One end of the pressing rod is connected to the baffle, and the other end extends to the outside of the cover body. The baffle is movably arranged on the cover body, and a spring is mounted on the pressing rod connected to the baffle, so that the spring has an open position in which the second through hole is connected to the first through hole and a closed position in which the first through hole is blocked. The first end of the spring is connected to the pressing rod, and the second end is connected to the cover body.
2. The sample tube according to claim 1, characterized in that The cover body is provided with a limiting rod, the axial direction of the limiting rod is perpendicular to the axial direction of the pressing rod, and the limiting rod is provided with a third through hole for the shielding plate and / or the pressing rod to pass through.
3. The sample tube according to claim 2, characterized in that The second end of the spring is connected to the limiting rod.
4. The sample tube according to claim 2, characterized in that The shielding plate is provided with two groups of limit blocks, which are respectively provided on both sides of the limit rod, and the distance between the two groups of limit blocks is equal to the maximum movable stroke of the shielding plate.
5. The sample tube according to claim 2, characterized in that There are two limit rods, which are arranged in parallel and spaced apart. The limit rod away from the pressing rod is located on the travel path of the shielding plate.
6. The sample tube according to claim 1, characterized in that The cover body is further provided with a guide column, and the pressing rod is guided and matched with the guide column.
7. The sample tube according to claim 6, characterized in that The second end of the spring is connected to the guide post.
8. The sample tube according to claim 1, characterized in that The cover body is detachably connected to the tube body.
9. The sample tube according to claim 1, characterized in that The cover body and the tube body are an integrated structure.
10. The sample tube according to claim 1, characterized in that The tube body is provided with a measuring scale.