Pipe cap covering device for eight-connection pipe

By designing a tube capping device with an eight-tube placement plate, positioning base, and pressing mechanism, the problem of low efficiency in traditional manual capping is solved, achieving uniform and rapid tube capping operation, preventing sample damage, and improving experimental efficiency and report accuracy.

CN224226629UActive Publication Date: 2026-05-12ZHONGSHAN HOSPITAL FUDAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN HOSPITAL FUDAN UNIV
Filing Date
2025-06-26
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Traditional manual capping of PCR eight-tube sets is inefficient, resulting in uneven capping, potentially leading to loose or crooked caps. This increases the risk of sample evaporation or contamination, failing to meet the demands for rapid and efficient experiments and extending the time required to retrieve reports.

Method used

设计了一种包括八联管放置板、定位底座和下压机构的管盖盖合装置,利用下压轮和下压杆实现均匀快速的管盖盖合,通过弧形按压面分散压力,避免局部变形或破裂。

Benefits of technology

It achieves uniform and rapid capping of the eight-tube tube, preventing evaporation or contamination, improving experimental efficiency, reducing the probability of specimen duplication, and shortening the time to obtain the report.

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Abstract

The utility model discloses a pipe cap covering device for an eight-connection pipe, and belongs to the technical field of medical instruments. Comprising an eight-connection pipe placing plate, a positioning base and a pressing mechanism, placing holes for tightly fixing PCR eight-connection tubes are formed in the eight-connection tube placing plate; the positioning base is provided with a rail groove matched with the eight-connected-pipe containing plate in shape. The downward pressing mechanism comprises downward pressing wheels and downward pressing rods, the downward pressing wheels are horizontally arranged above the eight-connection pipe containing plate, the downward pressing rods are fixed to the two sides of the downward pressing wheels, and the downward pressing rods are arranged at notches of the fixing plates on the two sides of the positioning base and used for pushing the downward pressing wheels front and back to achieve cover pressing. The placing holes are circular or approximately circular. Two locating pieces are arranged in front of the locating base and used for guaranteeing that the locating pieces are fixed in position and do not shake or move in the pipe cap covering process. According to the pipe cover covering device for the eight-connected pipe, the effect of convenient covering is achieved.
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Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, it relates to a tube capping device for an eight-tube tube. Background Technology

[0002] In molecular biology experiments, PCR is a commonly used technique. PCR eight-tube strips are a common experimental consumable used for simultaneous PCR reactions of multiple samples. During the experiment, the caps of the eight-tube strips need to be accurately placed on the tubes to prevent sample contamination and evaporation. Currently, the traditional method of manually capping PCR eight-tube strips is inefficient. Operators must individually align the caps with the tube openings and press them on. This operation is not only time-consuming and labor-intensive, but also prone to operator fatigue during prolonged operation, leading to uneven capping pressure, potentially resulting in loose or misaligned caps, which can cause sample evaporation or contamination during amplification. This increases the probability of sample duplication and prolongs the time it takes for clinical patients to receive their reports. Furthermore, when processing large numbers of samples, the manual capping method cannot meet the demands of rapid and efficient experiments, reducing overall experimental efficiency.

[0003] Therefore, it is necessary to provide an eight-pipe capping device to solve the above problems. Utility Model Content

[0004] Based on the aforementioned problems in the prior art, the purpose of this application is to provide an eight-pipe capping device to achieve convenient capping.

[0005] The technical solution adopted by this application to solve its technical problem is: including an eight-tube placement plate, a positioning base, and a pressing mechanism located above the eight-tube placement plate;

[0006] The eight-tube placement plate is provided with placement holes for tightly fixing the PCR eight-tubes;

[0007] The positioning base is provided with a track groove that matches the shape of the eight-tube placement plate;

[0008] The pressing mechanism includes a pressing wheel and a pressing rod. The pressing wheel is horizontally positioned above the eight-tube placement plate. The pressing rods are fixed to both sides of the pressing wheel. The pressing rods are placed in the slots of the fixing plates on both sides of the positioning base and are used to push the pressing wheel back and forth to achieve the pressing of the cover.

[0009] Furthermore, the placement hole is circular or approximately circular.

[0010] Furthermore, the placement holes are arranged in 12 columns, eight rows (A and H), for a total of 96 holes.

[0011] Furthermore, two positioning plates are provided in front of the positioning base to ensure that its position is fixed and will not shake or shift during the process of covering the tube.

[0012] Furthermore, a limiting block is provided between the positioning base and the eight-tube placement plate, which allows the eight-tube placement plate to be pulled out or pushed in without falling off.

[0013] Furthermore, an elastic component is provided below the pressure rod, and a clearance range is formed between the elastic component and the lower eight-tube placement plate to facilitate the pulling out of the eight-tube placement plate.

[0014] The beneficial effects of this utility model are:

[0015] The pressure mechanism squeezes the cap to complete the sealing of the eight-tube tube. This ensures a uniform and rapid sealing of the eight-tube tube and its cap, preventing gaps caused by improper sealing or excessive force that could lead to deformation or breakage of the tube. This prevents liquid evaporation or contamination during amplification, increases the sample testing cycle, prolongs the time for patients to receive reports, and causes inconvenience to staff. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is an overall schematic diagram of an eight-pipe cap fitting device according to this application;

[0018] Figure 2 for Figure 1 A schematic diagram of the state of a pipe cap fitting device for an eight-pipe assembly;

[0019] In the picture:

[0020] 1. Placement plate; 11. Placement hole;

[0021] 2. Positioning base; 21. Track groove; 22. Positioning piece; 23. Limiting block; 24. Groove; 25. Elastic component; 26. Limiting strip;

[0022] 3. Pressing mechanism; 31. Pressing roller; 32. Pressing rod. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] like Figure 1-2 As shown, this application provides a pipe cap fitting device for an eight-pipe assembly, including an eight-pipe placement plate 1, a positioning base 2, and a pressing mechanism 3 located above the eight-pipe placement plate 1.

[0027] The 8-tube placement plate 1 is used to hold PCR 8-tube sets. It has 12 columns (A and H, eight rows in total) and 96 evenly distributed circular or near-circular placement wells 11 to securely hold the PCR 8-tube sets in place, ensuring stability during experiments and preventing them from shaking or tipping over. The size of the placement wells 11 matches the size of the PCR 8-tube sets, ensuring smooth insertion and proper positioning.

[0028] The positioning base 2 has a track groove 21 that matches the shape of the eight-tube placement plate 1. Two positioning plates 22 are located at the front of the positioning base 2 to ensure its fixed position and prevent shaking or displacement during the tube capping process. When the eight-tube placement plate 1 needs to be pulled out, the two positioning plates 22 are rotated so that they are positioned on one side, allowing the eight-tube placement plate 1 to be pulled out smoothly. When the eight-tube placement plate 1 is pushed into the positioning base 2, the two positioning plates 22 are rotated to fix the eight-tube placement plate 1 and prevent displacement during pressing. A limit strip 26 is provided on one side of the eight-tube placement plate 1, and a limit block 23 is provided between the positioning base 2 and the eight-tube placement plate 1. When the eight-tube placement plate 1 is pulled out, the limit block 23 blocks the limit strip 26, allowing the eight-tube placement plate to be pulled out or pushed in without falling off. This facilitates the quick and accurate transfer of the PCR eight-tube strips to the tube capping device after the experiment.

[0029] The pressing mechanism 3 includes a pressing roller 31 and a pressing rod 32. The pressing roller 31 is horizontally positioned above the eight-tube placement plate 1. Pressing rods 32 are fixed to both sides of the pressing roller 31 and positioned at the slots 24 of the fixing plates on both sides of the positioning base 2. These rods are used to push the pressing roller 31 back and forth to press the cover. Additionally, an elastic component 25 is provided below the pressing rod. The elastic component 25 includes a compressible sponge strip, which forms a clearance area with the eight-tube placement plate 1 below, facilitating the pulling out of the eight-tube placement plate 1.

[0030] Compared to a traditional flat pressing surface, the arc-shaped pressing surface of the pressure roller 31 makes contact with the object being pressed through a curved surface. The contact point is usually not a single point or a straight line, but an area. The arc shape allows the pressure to be distributed over a larger area, and the size and shape of the contact area vary with the curvature of the arc, the pressing force, and the characteristics of the object being pressed.

[0031] The pressure distribution on the arc-shaped pressing surface of the pressure roller 31 is relatively uniform. When pressure is applied, due to the arc shape, the pressure is dispersed and transmitted to the object being pressed along the arc surface. At the same time, because the pressure distribution is uniform, the object being pressed can undergo more uniform shape changes, making it less prone to excessive local deformation or breakage.

[0032] The contact state between a curved object and the object being pressed differs from that of a flat object. For example, when a curved pressure roller 31 presses against a flat surface, the pressure roller 31 makes line contact with the surface, rather than surface contact. However, during the rolling process, different points on the pressure roller 31 successively contact the surface. In fact, for a certain period of time, an area of ​​a certain width on the surface is subjected to pressure. The width of this area is related to the curvature of the pressure roller 31 and the rolling distance, which can also be seen as a special way of increasing the force-bearing area.

[0033] This eight-tube capping device can uniformly and quickly cap the eight tubes, preventing gaps caused by improper capping or excessive force that could lead to deformation or breakage of the eight tubes, causing liquid evaporation or contamination during amplification, increasing the sample testing cycle, prolonging the time for patients to obtain reports, and causing inconvenience to staff.

[0034] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A pipe cap fitting device for an eight-pipe assembly, characterized in that: It includes an eight-tube placement plate (1), a positioning base (2), and a pressing mechanism (3) located above the eight-tube placement plate (1); The eight-tube placement plate (1) is provided with placement holes (11) for tightly fixing the PCR eight-tubes; The positioning base (2) is provided with a track groove (21) that matches the shape of the eight-tube placement plate (1); The pressing mechanism (3) includes a pressing wheel (31) and a pressing rod (32). The pressing wheel (31) is horizontally positioned above the eight-tube placement plate (1). The pressing rod (32) is fixedly connected to both sides of the pressing wheel (31). The pressing rod (32) is placed at the slot (24) of the fixing plate on both sides of the positioning base (2) and is used to push the pressing wheel (31) back and forth to achieve the pressing of the cover.

2. The pipe cap fitting device for an eight-pipe assembly according to claim 1, characterized in that: The placement hole (11) is circular or approximately circular.

3. The pipe cap fitting device for an eight-pipe assembly according to claim 1, characterized in that: The placement holes (11) are provided in 12 columns, with eight rows (AH), for a total of 96 holes.

4. The pipe cap fitting device for an eight-pipe assembly according to claim 1, characterized in that: The positioning base (2) has two positioning plates (22) in front of it to ensure that its position is fixed and that it will not shake or shift during the process of covering the tube.

5. A pipe cap fitting device for an eight-pipe assembly according to claim 4, characterized in that: A limiting block (23) is provided between the positioning base (2) and the eight-tube placement plate (1), which enables the eight-tube placement plate (1) to be pulled out or pushed in without falling off.

6. The pipe cap fitting device for an eight-pipe assembly according to claim 4, characterized in that: An elastic component (25) is provided below the pressure rod (32). The elastic component (25) and the lower eight-tube placement plate (1) form a clearance interval to facilitate the pulling out of the eight-tube placement plate (1).