Sampling tube for hepatitis b virus detection

Abstract

The utility model relates to sampling equipment technical field, concretely relates to a sampling tube for hepatitis b virus detection, including the pipe body of one end opening and setting in the cover body of pipe body's open end, the cover body includes the upper cover of lid in the pipe mouth and the splashproof part of setting in the pipe body near the pipe mouth, the splashproof part includes the fixed ring of the inner wall of pipe body and a plurality of elastic splashproof sheet that the axis of the fixed ring is annularly distributed, the lower extreme of elastic splashproof sheet is with the upper end surface fixed connection of fixed ring, and the upper extreme of elastic splashproof sheet is free end, when the upper cover lid in the pipe mouth the elastic splashproof sheet is close to the inner wall of pipe body to facilitate blood to enter the pipe body cavity, when the upper cover separates from the pipe mouth a plurality of the elastic splashproof sheet gathers to shield the open end of pipe body. Adopt this scheme can when drawing blood in the pipe body effectively prevent the blood in the pipe body from splashing out of the pipe body to cause the biological safety risk to the operating personnel and the environment.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, specifically to a sampling tube for hepatitis B virus detection. Background Technology

[0002] Hepatitis B virus testing typically involves blood sampling, requiring blood collection from patients. Traditionally, vacuum blood collection tubes are used, consisting of the tube body and a cap. While convenient and quick, hepatitis B virus testing requires a pipette to quantitatively transfer the blood from the tube to a specific instrument for analysis. To prevent contaminants on the cap from entering the tube and contaminating the blood, the cap cannot be pierced to extract the blood. Instead, the cap must be unscrewed. This process creates negative pressure inside the tube, causing a sudden pressure change as the cap detaches. This sudden influx of air into the tube generates air oscillations, causing blood to splash out. This poses a biosafety risk to personnel and the environment. Even with proper personal protective equipment, splashed blood can still contaminate the environment as aerosols, posing an infection risk to other workers. Utility Model Content

[0003] The purpose of this invention is to provide a sampling tube for hepatitis B virus detection, in order to solve the problem mentioned in the above-mentioned technical background that blood inside the existing sampling tube is easily splashed out when the cap is opened, posing a biosafety risk to operators and the environment.

[0004] To solve the above-mentioned technical problems, the present invention adopts a basic solution as follows: a sampling tube for hepatitis B virus detection, comprising a tube body with one open end and a cap disposed at the open end of the tube body. The cap includes an upper cover that fits over the tube opening and a splash-proof part disposed within the tube body near the tube opening. The splash-proof part includes a fixing ring that fits against the inner wall of the tube body and a plurality of elastic splash-proof sheets evenly distributed in a ring around the axis of the fixing ring. The lower end of the elastic splash-proof sheet is fixedly connected to the upper end face of the fixing ring, and the upper end of the elastic splash-proof sheet is a free end. When the upper cover is closed over the tube opening, the elastic splash-proof sheet is close to the inner wall of the tube body to facilitate blood entering the inner cavity of the tube body. When the upper cover is detached from the tube opening, the plurality of elastic splash-proof sheets retract to block the open end of the tube body.

[0005] Furthermore, the top cover includes an outer rigid shell and a middle elastic plug adapted to the opening of the tube body. The rigid shell is fixedly connected to the elastic plug. The outer wall of the elastic plug is provided with a groove adapted to the elastic splash guard. When the top cover is closed on the opening end of the tube body, the upper end of the elastic splash guard is located in the groove.

[0006] Furthermore, the upper width of the elastic splash guard is smaller than the lower width. Under the elasticity of the elastic splash guard, the upper ends of each elastic splash guard are inclined towards the axis of the tube body so as to contact each other to form a frustum-shaped splash umbrella.

[0007] Furthermore, a liquid extraction hole is formed in the middle of the splash-proof umbrella for extracting blood from the tube below the splash-proof umbrella, and the inner diameter of the liquid extraction hole is larger than the outer diameter of the pipette's suction tube.

[0008] Furthermore, when the top cover is closed on the open end of the tube, the distance from the upper end face of the elastic splash guard to the lower end face of the elastic plug is less than the distance from the upper wall of the groove to the open end face of the tube.

[0009] Furthermore, the upper surface of the fixing ring is configured as an inclined surface that slopes towards the inner wall of the tube to prevent blood splashed on the splash shield due to vibration from flowing back into the tube and causing accidental contamination of the blood inside the tube when the top cover is separated from the tube.

[0010] Furthermore, the rigid outer shell is a component made of polypropylene or polyethylene.

[0011] Furthermore, the elastic plug is a component made of butyl rubber.

[0012] Furthermore, the elastic splash guard is a sheet made of polypropylene or polycarbonate.

[0013] Furthermore, the tube body is a transparent part made of PET.

[0014] Compared with existing technologies, the sampling tube for hepatitis B virus detection in this solution has at least the following beneficial effects: 1. This solution involves installing multiple elastic splash guards inside the sampling tube. When the top cover is closed, the elastic splash guards are shielded by elastic plugs and close to the inner wall of the tube. The elastic splash guards are in an open state and do not affect the entry of collected blood into the tube. When the top cover is opened, the elastic splash guards have already closed to form a splash umbrella before the top cover is completely removed from the tube opening, preventing the virus-laden blood from splashing out of the tube due to the vibration generated when the top cover is removed from the tube.

[0015] II. In this solution, when the top cover is opened, before it is completely separated from the tube opening, the upper end of the groove is already connected to the external space. At this time, the distance the top cover moves is small, so the negative pressure formed in the tube is small, and therefore less gas enters the blood collection tube through the groove, resulting in a slower flow rate and no violent air oscillation phenomenon in the tube. In contrast, in the prior art, a large amount of external air suddenly enters the tube the instant the top cover leaves the tube opening. Therefore, opening the top cover in the prior art will cause airflow oscillation in the tube, resulting in blood splashing.

[0016] 3. The splash shield formed inside the tube in this solution can also effectively prevent the tip of the pipette from getting close to the inner wall of the tube when drawing blood through the pipette. This prevents the tip of the pipette from contacting the inner wall of the tube and drawing in substances such as coagulants (e.g., silica gel particles) or trace amounts of separating gel that may be attached to the inner wall of the tube. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the sampling tube for hepatitis B virus detection according to the present invention, taken from the main view direction.

[0018] Figure 2 This is a schematic diagram of the structure at the open end of the sampling tube.

[0019] Figure 3 This is a schematic diagram of the upper cover structure.

[0020] Figure 4 for Figure 3 Sectional view of AA.

[0021] Figure 5 This diagram illustrates how to insert the pipette tube into the tubing after opening the top cover to draw blood.

[0022] Figure 6 yes Figure 5 Enlarged view of section A.

[0023] The meanings of the labels in the attached diagram are as follows: tube body 10; 20; 201; 2011; 2012; 20121; 202; 2021; 2022; 2023; 2024; 2025; 2026; 2027; 2028; 2029; 2020; 2020; 2020; 2021; 2022; 203; 30mm suction tube. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] This embodiment describes a sampling tube for hepatitis B virus detection, such as... Figures 1-6 As shown, the device includes a tube body 10 with an opening at the top and a cover 20 disposed at the opening end of the tube body 10. The cover 20 includes an upper cover 201 that covers the tube opening and a splash-proof part disposed inside the tube body 10 near the tube opening.

[0027] The tube body 10 is a transparent part made of PET (polyethylene terephthalate). PET has extremely high mechanical strength and rigidity, is not easy to break, has excellent transparency, which makes it easy to observe blood stratification and sample volume, and has good chemical inertness, so it is not easy to react with blood or additives inside the tube.

[0028] The splash-proof part is located near the pipe opening of the pipe body 10. The splash-proof part includes a fixing ring 2021 that fits against the inner wall of the pipe body 10 and multiple elastic splash-proof sheets 2022 evenly distributed in a ring around the axis of the fixing ring 2021. The fixing ring 2021 is a ring-shaped body made of elastic plastic, and its outer wall abuts against the inner wall of the pipe body 10. The elastic splash-proof sheet 2022 is a sheet-shaped body made of polypropylene or polycarbonate, possessing a certain degree of toughness and elasticity. The upper width of the elastic splash-proof sheet 2022 is smaller than its lower width. The lower end of the elastic splash-proof sheet 2022 is fixedly connected to the outer edge of the fixing ring 2021, and the upper end of the elastic splash-proof sheet 2022 is a free end. Figure 6 As shown, in the original state, the upper ends of each elastic splash shield 2022 are inclined toward the axis of the tube body 10 to contact each other and form a frustum-shaped splash shield 202. A liquid extraction hole 203 for extracting blood from the tube body 10 below the splash shield 202 is formed in the middle of the splash shield 202. The inner diameter of the liquid extraction hole 203 is larger than the outer diameter of the pipette tube 30.

[0029] The upper cover 201 includes an outer rigid shell 2011 and a central elastic plug 2012 adapted to the opening of the tube body 10. The rigid shell 2011 and the elastic plug 2012 are fixedly connected. The rigid shell 2011 is made of polypropylene or polyethylene, and the elastic plug 2012 is made of butyl rubber. Butyl rubber has high elasticity and good self-sealing properties. When collecting blood from a patient, after the blood collection needle punctures the elastic plug 2012 into the tube body 10 to allow blood to flow into the tube body 10 and the blood collection needle is withdrawn, the high rebound of the elastic plug 2012... The elastic plug 2012 has a groove 20121 on its outer wall that fits the elastic anti-splash plate 2022. When the top cover 201 is closed on the open end of the tube 10, the upper end of the elastic anti-splash plate 2022 is located in the groove 20121. Under the compression of the elastic plug 2012, the elastic anti-splash plate 2022 is close to the inner wall of the tube 10 to facilitate the entry of blood into the inner cavity of the tube 10. At this time, if... Figure 2 As shown, the distance L1 from the upper end face of the elastic splash guard 2022 to the lower end face of the elastic plug 2012 is less than the distance L2 from the upper wall of the groove 20121 to the opening end face of the tube body 10. Therefore, when the entire upper cover 201 gradually moves upwards but has not yet completely detached from the tube opening, the multiple elastic splash guards 2022 have already detached from the groove 20121 and rebound towards the tube axis to form a splash umbrella 202 to shield the opening end of the tube body 10. To prevent blood splashed onto the splash umbrella 202 due to vibration at the moment the upper cover 201 detaches from the tube body 10 from flowing back into the tube body 10 and causing accidental contamination of the blood inside the tube body 10, the upper surface of the fixing ring 2021 is set as an inclined surface inclined towards the inner wall of the tube body 10.

[0030] In this scheme, after the cap 20 is assembled onto the tube 10, a vacuum is drawn into the inner cavity of the tube 10 to create negative pressure, forming a vacuum blood collection tube for convenient blood sampling from patients. When the cap 201 is not opened, the elastic splash guard 2022 is shielded by the elastic plug 2012 and close to the inner wall of the tube 10. The elastic splash guard 2022 is in an open state and does not affect the entry of collected blood into the tube 10. When the cap 201 is opened, the elastic splash guard 2022 has already retracted to form a splash shield 202 before the cap 201 is completely removed from the tube opening, preventing the vibration generated when the cap 201 is removed from the tube 10 from causing virus-laden blood to splash out of the tube 10. When the cap 201 is opened, as the cap 201 gradually moves upward and has not completely removed from the tube opening, the upper end of the groove 20121 is already connected to the external space. At this time, the distance the cap 201 has moved is small, so at this time... The negative pressure inside the tube is relatively small, resulting in less gas entering the blood collection tube through the groove 20121 and a slower flow rate. This prevents intense air oscillation within the tube. In contrast, in existing technologies, a large amount of external air suddenly enters the tube the moment the cap 201 leaves the tube opening. Therefore, opening the cap in existing technologies causes airflow oscillation within the tube, resulting in blood splashing. In this solution, the splash shield 202 formed inside the tube body 10 can also effectively prevent the tip of the pipette from approaching the inner wall of the tube body 10 when drawing blood from the tube body 10 using a pipette. This prevents the tip of the pipette from contacting the inner wall of the tube body 10 and drawing in any coagulants (such as silica gel particles) or trace amounts of separating gel that may be adhering to the inner wall of the tube body 10.

[0031] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A sampling tube for hepatitis B virus detection, comprising a tube body (10) open at one end and a cap (20) disposed at the open end of the tube body (10), characterized in that: The cover (20) includes an upper cover (201) that covers the opening of the tube and a splash-proof part disposed inside the tube body (10) near the opening. The splash-proof part includes a fixing ring (2021) that fits against the inner wall of the tube body (10) and a plurality of elastic splash-proof sheets (2022) that are evenly distributed in a ring around the axis of the fixing ring (2021). The lower end of the elastic splash-proof sheet (2022) is fixedly connected to the upper end face of the fixing ring (2021). The upper end of the elastic splash-proof sheet (2022) is a free end. When the upper cover (201) is closed on the opening of the tube, the elastic splash-proof sheet (2022) is close to the inner wall of the tube body (10) to facilitate blood to enter the inner cavity of the tube body (10). When the upper cover (201) is removed from the opening of the tube, the plurality of elastic splash-proof sheets (2022) retract to block the opening end of the tube body (10).

2. The sampling tube for hepatitis B virus detection according to claim 1, characterized in that: The top cover (201) includes an outer hard shell (2011) and a middle elastic plug (2012) adapted to the opening of the tube body (10). The hard shell (2011) and the elastic plug (2012) are fixedly connected. The outer wall of the elastic plug (2012) is provided with a groove (20121) adapted to the elastic splash guard (2022). When the top cover (201) is closed on the opening end of the tube body (10), the upper end of the elastic splash guard (2022) is located in the groove (20121).

3. The sampling tube for hepatitis B virus detection according to claim 2, characterized in that: The upper width of the elastic splash shield (2022) is smaller than the lower width. Under the elasticity of the elastic splash shield (2022), the upper ends of each elastic splash shield (2022) are inclined toward the axis of the tube body (10) to contact each other and form a frustum-shaped splash umbrella (202).

4. The sampling tube for hepatitis B virus detection according to claim 3, characterized in that: The splash umbrella (202) has a liquid extraction hole (203) formed in the middle for extracting blood from the tube (10) below the splash umbrella (202). The inner diameter of the liquid extraction hole (203) is larger than the outer diameter of the pipette tube.

5. The sampling tube for hepatitis B virus detection according to claim 2, characterized in that: When the top cover (201) is closed on the open end of the tube body (10), the distance from the upper end face of the elastic splash guard (2022) to the lower end face of the elastic plug (2012) is less than the distance from the upper wall of the groove (20121) to the open end face of the tube body (10).

6. The sampling tube for hepatitis B virus detection according to claim 2, characterized in that: The upper surface of the fixing ring (2021) is configured as an inclined surface that is inclined toward the inner wall of the tube body (10).

7. The sampling tube for hepatitis B virus detection according to claim 2, characterized in that: The rigid outer shell (2011) is a component made of polypropylene or polyethylene.

8. The sampling tube for hepatitis B virus detection according to claim 2, characterized in that: The elastic plug (2012) is a component made of butyl rubber.

9. The sampling tube for hepatitis B virus detection according to claim 1, characterized in that: The elastic splash guard (2022) is a sheet made of polypropylene or polycarbonate.

10. The sampling tube for hepatitis B virus detection according to claim 1, characterized in that: The tube (10) is a transparent part made of PET.

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