Blood collection tube adopting multi-layer structure
By designing a multi-layered blood collection tube, the problem of inconvenient tail needle operation after blood collection was solved, achieving safe retention and reducing contamination, thus improving the safety of blood collection operations.
Patent Information
- Application Number
- CN202422790489.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-15
AI Technical Summary
After blood collection is completed, the needle at the end of the blood collection tube is inconvenient to operate, which can easily injure patients and medical staff, and can also easily introduce air into the sample, causing contamination.
Design a multi-layered blood collection tube, including a tube body, a tube cap, an upper sleeve, and a sealing rubber gasket. The tail needle of the blood collection needle is fixed to the positioning plate through a slot. After blood collection, the tail needle remains in the upper sleeve. When the blood collection needle is pulled out, it does not directly contact the patient, thus avoiding puncture injury.
This ensures that the tail needle remains safely inside the blood collection tube after blood collection, avoiding the risk of puncture, reducing the chance of sample contamination, and improving operational safety.
Smart Images
Figure CN223529441U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a blood collection tube with a multi-layer structure. Background Technology
[0002] Blood collection tubes are specialized containers used for collecting, storing, and transporting blood samples. They are typically made of medical-grade plastic or glass. They contain anticoagulants or other additives to ensure the stability and accuracy of the blood sample after collection, facilitating subsequent medical testing and diagnosis. They are widely used in clinical diagnostics, laboratory testing, and hemodialysis to collect patient blood samples for further analysis and testing. After blood collection, the normal procedure is to remove the blood collection tube first, followed by the lancet. However, because one hand holds the needle while the other pulls it out, the needle's tail is difficult to manipulate, increasing the risk of injury to patients and medical staff, and potentially causing bloodborne infections. Therefore, it is often the case that the lancet is removed first, followed by the blood collection tube. However, this process can easily introduce air into the blood collection tube, contaminating the sample. Therefore, a multi-layered blood collection tube was designed to address these issues. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] To address the shortcomings of existing technologies, this utility model provides a multi-layered blood collection tube, which solves the problem that the tail needle of the blood collection needle is inconvenient to operate after blood collection.
[0005] (II) Technical Solution
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] This utility model provides a multi-layered blood collection tube, comprising: a cylindrical tube body, a cap connected to the upper opening of the tube body, a sealing rubber gasket connected inside the cap, an upper sleeve connected to the upper end of the cap by threads, a chamber bottom sealing gasket connected inside the upper sleeve and above the cap, a rubber protrusion connected in the middle of the chamber bottom sealing gasket, a lower pressure plate connected around the upper surface of the chamber bottom sealing gasket and outside the rubber protrusion, the lower pressure plate being fixedly connected to the upper sleeve, a chamber upper sealing gasket connected to the lower end of the upper opening of the upper sleeve, slots arranged in a ring around the inner circumference of the upper sleeve, a blood collection needle tail needle provided at the upper end of the upper sleeve, a positioning plate connected to the upper outer side of the blood collection needle tail needle, both the slots and the positioning plate being L-shaped, the slots and the positioning plate being inserted into each other, and a triangular locking slot connected to one side of the upper end of the slot and one side of the lower section of the positioning plate.
[0008] Preferably, a sealing ring is connected around the outer perimeter of the lower opening of the upper sleeve.
[0009] Preferably, a plastic connecting post is provided at the connection between the upper sleeve and the cap.
[0010] Preferably, both the cap and the outer circumference of the upper sleeve are provided with anti-slip texture.
[0011] Preferably, the slot and the lower part of the positioning plate are in a transition fit.
[0012] Preferably, the distance between the lower surface of the sealing rubber pad and the upper surface of the upper sleeve is less than the length of the blood collection needle tail needle, and the length of the blood collection needle tail needle is less than the length of the positioning plate.
[0013] Preferably, the upper sealing gasket of the chamber has a puncture port, and the diameter of the puncture port is larger than the diameter of the outer rubber sleeve of the blood collection needle tail.
[0014] (III) Beneficial Effects
[0015] This utility model provides a blood collection tube with a multi-layer structure, which has at least the following advantages compared with the prior art:
[0016] This blood collection tube uses a multi-layer structure. After blood collection is completed, the tail needle can be left inside the upper layer before the blood collection needle is pulled out. There is no need to worry about the tail needle pricking the patient or medical staff. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is an exploded view of the present invention;
[0019] Figure 3 This is a diagram of the internal slot of the upper sleeve of this utility model;
[0020] Figure 4 This is a cross-sectional view of the present invention;
[0021] Figure 5 This is a partial enlarged view of the card slot of this utility model;
[0022] Figure 6 This is a partial enlarged view of the positioning plate of this utility model.
[0023] In the diagram: 1. Tube body; 2. Tube cap; 3. Sealing rubber gasket; 4. Upper sleeve; 5. Bottom sealing gasket of the chamber; 6. Lower pressure plate; 7. Upper sealing gasket of the chamber; 8. Slot; 9. Blood collection needle tail needle; 10. Positioning plate; 11. Bayonet; 21. Puncture port. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-6 This utility model provides a technical solution: a multi-layered blood collection tube, comprising: a cylindrical tube body 1, a cap 2 connected to the upper opening of the tube body 1, a sealing rubber gasket 3 connected inside the cap 2, an upper sleeve 4 threadedly connected to the upper end of the cap 2, a chamber bottom sealing gasket 5 connected inside the upper sleeve 4 and located at the upper end of the cap 2, a rubber protrusion connected in the middle of the chamber bottom sealing gasket 5, and a lower pressure plate 6 connected around the upper surface of the chamber bottom sealing gasket 5 and outside the rubber protrusion. The lower pressure plate 6 is fixedly connected to the upper sleeve 4. The lower end of the opening at the upper end of the upper sleeve 4 is connected to the upper chamber sealing gasket 7. The upper sleeve 4 has a ring-shaped array of slots 8 inside. The upper end of the upper sleeve 4 is provided with a blood collection needle tail needle 9. The upper outer side of the blood collection needle tail needle 9 is connected to a positioning plate 10. The slots 8 and the positioning plate 10 are both L-shaped. The slots 8 and the positioning plate 10 are inserted and connected. The upper side of the slot 8 and the upper side of the lower section of the positioning plate 10 are both connected to a triangular bayonet 11.
[0026] When using the needle, insert it into the blood collection site, align the positioning plate 10 with the inside of the slot 8, and insert it through the slot 11. Push it downwards until it reaches the bottom of the slot 8, then rotate it so that the protruding part of the lower section of the positioning plate 10 is inserted into the lower section of the slot 8. During insertion, the needle tail 9 will pass through the upper sealing gasket 7, the lower sealing gasket 5, and the sealing rubber gasket 3 of the chamber until it enters the inside of the tube body 1. At this time, the negative pressure inside the tube body 1 will draw out the blood. After the blood collection is completed, rotate the positioning plate 10 in the opposite direction and pull it upwards. When the two slots 11 are in contact, there will be a certain feeling of sticking. At this time, stop pulling out and remove the needle from the patient's arm. Unscrew the upper sleeve 4, leaving only the tube body 1, the cap 2, and the sealing rubber gasket 3. Discard the rest into the sharps container. When multiple tubes of blood need to be collected, pull upwards forcefully when the two slots 11 are in contact. The slots 11 are triangular in shape, which makes it easy to pull out and insert.
[0027] like Figure 1-4 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, a sealing ring is connected around the outer side of the lower opening of the upper sleeve 4.
[0028] Analysis of the above structure shows that the sealing ring connected around the outer side of the lower opening of the upper sleeve 4 can further increase the sealing performance.
[0029] like Figure 1-4 As shown in the figure, this utility model embodiment provides an implementation method. Based on the above implementation method, a plastic connecting post is provided at the connection between the upper sleeve layer 4 and the tube cap 2.
[0030] Analysis of the above structure shows that the plastic connecting post at the connection between the upper sleeve 4 and the cap 2 can not only ensure the sealing, but also serve as a reminder that it has not been used.
[0031] like Figure 1-4 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the outer periphery of both the cap 2 and the upper sleeve 4 is provided with anti-slip texture.
[0032] Analysis of the above structure shows that the anti-slip textured pattern on the outer side of the cap 2 and the upper sleeve 4 can provide a certain friction force when the upper sleeve 4 rotates.
[0033] like Figure 1-4 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the lower part of the slot 8 and the positioning plate 10 are in an overfitting position.
[0034] Analysis of the above structure shows that the lower part of the slot 8 and the positioning plate 10 are in an overfitting position, which allows the slot 8 and the positioning plate 10 to fit more tightly and reduce shaking.
[0035] like Figure 1-4 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the distance between the lower surface of the sealing rubber pad 3 and the upper surface of the upper sleeve 4 is less than the length of the blood collection needle tail needle 9, and the length of the blood collection needle tail needle 9 is less than the length of the positioning plate 10.
[0036] Analysis of the above structure shows that the distance between the lower surface of the sealing rubber pad 3 and the upper surface of the upper sleeve 4 is less than the length of the blood collection needle tail needle 9. This ensures that the blood collection needle tail needle 9 will penetrate the sealing rubber pad 3 after the positioning plate 10 is inserted into the slot 8. The length of the blood collection needle tail needle 9 is less than the length of the positioning plate 10, which means that when the blood collection needle tail needle 9 is pulled out, the position of the needle will be blocked by the positioning plate 10, reducing the probability of accidental contact.
[0037] like Figure 1-4 As shown in the figure, this utility model embodiment provides an implementation method. Based on the above implementation method, the upper end sealing gasket 7 of the chamber is provided with a puncture port 21, and the diameter of the puncture port 21 is larger than the diameter of the outer rubber sleeve of the blood collection needle tail 9.
[0038] Analysis of the above structure shows that the puncture port 21 opened in the upper sealing gasket 7 of the chamber can play a positioning role, and at the same time reduce the thickness at this position to facilitate the insertion of the blood collection needle tail needle 9.
[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A blood collection tube with a multi-layer structure, characterized in that, include: The tube (1) is cylindrical in shape. A cap (2) is connected to the opening at the upper end of the tube (1). A sealing rubber gasket (3) is connected inside the cap (2). An upper sleeve (4) is connected to the upper end of the cap (2) by threads. A chamber bottom sealing gasket (5) is connected inside the upper sleeve (4) and above the cap (2). A rubber protrusion is connected in the middle of the chamber bottom sealing gasket (5). A lower pressure plate (6) is connected around the upper surface of the chamber bottom sealing gasket (5) and around the outside of the rubber protrusion. The lower pressure plate (6) is fixed to the inside of the upper sleeve (4). The upper sleeve (4) is connected to the lower end of the opening at the upper end of the chamber with a sealing gasket (7). The upper sleeve (4) has a groove (8) arranged in a ring around the inside. The upper end of the upper sleeve (4) is provided with a blood collection needle tail needle (9). The upper outer side of the blood collection needle tail needle (9) is connected with a positioning plate (10). The groove (8) and the positioning plate (10) are both L-shaped. The groove (8) and the positioning plate (10) are inserted and connected. The upper side of the groove (8) and the upper side of the lower section of the positioning plate (10) are both connected with a triangular bayonet (11).
2. A multi-layered blood collection tube according to claim 1, characterized in that: A sealing ring is connected around the outer side of the lower opening of the upper sleeve (4).
3. A multi-layered blood collection tube according to claim 1, characterized in that: A plastic connecting post is provided at the connection between the upper sleeve (4) and the cap (2).
4. A multi-layered blood collection tube according to claim 1, characterized in that: The outer circumference of both the cap (2) and the upper sleeve (4) is provided with anti-slip texture.
5. A multi-layered blood collection tube according to claim 1, characterized in that: The lower part of the slot (8) and the positioning plate (10) are in a transition fit.
6. A multi-layered blood collection tube according to claim 1, characterized in that: The distance between the lower surface of the sealing rubber pad (3) and the upper surface of the upper sleeve (4) is less than the length of the blood collection needle tail (9), and the length of the blood collection needle tail (9) is less than the length of the positioning plate (10).
7. A multi-layered blood collection tube according to claim 1, characterized in that: The upper sealing gasket (7) of the chamber has a puncture port (21), the diameter of which is larger than the diameter of the outer rubber sleeve of the blood collection needle tail (9).