A device for extracting liquid from blood products

Abstract

The utility model relates to the technical field of blood processing, in particular to a device for extracting blood product liquid by stratification, comprising: a stratified structure; the stratified structure comprises a sampling tube, an adding and extracting component, a transition tube, a mixing tube and a soft bag, the adding and extracting component is threadedly connected to the top of the sampling tube, the transition tube is fixedly connected and connected to the bottom of the sampling tube, the mixing tube is fixedly connected and connected to the bottom of the transition tube, and the soft bag is fixedly connected and connected to the bottom of the mixing tube; a propulsion structure can indirectly push liquid upward through the soft bag, so that the liquid can be centrifuged in a relatively closed space, and the centrifugation and extraction operations do not require an opening on the surface of the soft bag, which effectively avoids liquid leakage, so as to achieve the purpose of reducing the cost of blood sealing layer extraction.

Description

Technical Field

[0001] The utility model relates to the technical field of blood processing, in particular to a device for extracting liquid stratification of blood products. Background Art

[0002] Blood product liquid fractionation equipment is a laboratory technique commonly used to separate different components of blood, such as serum or plasma.

[0003] At present, a Chinese patent discloses a blood separation device (announcement number is CN220444103U). By using the added sampling component, other reagents can be easily added during sampling. After the blood is put in, the liquid obtained by centrifugal operation is convenient for extraction. At the same time, the propulsion structure is used to complete the movement of blood after stratification, which makes the operation more convenient, one-time molding, and one-time sampling are not easy to be contaminated.

[0004] Since the above-mentioned device places the moving part directly inside the mixing section, and the moving part is also in direct contact with the blood when in use, and the blood usually needs to rotate at a speed of 1000 to 15000 rpm during centrifugal stratification, this not only requires the moving part to fit perfectly with the mixing section, but also requires the moving part to have good sealing performance, but this also increases the manufacturing difficulty between the moving part and the mixing section, and increases the cost of liquid stratification extraction of blood products. Utility Model Content

[0005] The purpose of the utility model is to provide a device for extracting liquid stratified blood products in order to solve the above-mentioned problem, thereby solving the problem that the existing devices for extracting liquid stratified blood products have high use costs and are difficult to meet current use needs.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A device for extracting blood product liquid by stratification, comprising: a stratified structure; the stratified structure comprises a sampling tube, an addition and extraction assembly, a transition tube, a mixing tube and a soft bag, the addition and extraction assembly is threadedly connected to the top of the sampling tube, the transition tube is fixedly connected and connected to the bottom of the sampling tube, the mixing tube is fixedly connected and connected to the bottom of the transition tube, and the soft bag is fixedly connected and connected to the bottom of the mixing tube;

[0008] Further, a propulsion structure is provided, wherein the propulsion structure is threadedly connected to the surface of the mixing tube, and the bottom of the soft bag is fixedly connected to the propulsion structure; the propulsion structure comprises a threaded barrel, a cylinder, a slide rail, a threaded column, a threaded sleeve and a push plate, wherein the threaded barrel is threadedly connected to the surface of the mixing tube, the cylinder is fixedly connected to the bottom of the threaded barrel, the soft bag is arranged inside the cylinder, the slide rail is fixedly connected and communicated with the surface of the cylinder, the threaded column is rotatably connected to the inside of the slide rail, the bottom of the threaded column passes through the outside of the slide rail, the threaded sleeve is threadedly connected to the surface of the threaded column, the push plate is fixedly connected to one end of the threaded sleeve, and one end of the push plate passes through the inside of the cylinder and is fixedly connected to the soft bag.

[0009] Furthermore, the soft bag is made of medical-grade transparent PVC material, and the sampling tube, transition tube, mixing tube and cylinder are all made of transparent PET material.

[0010] Furthermore, the diameter of the push plate matches the inner diameter of the cylinder, and the diameter of the soft bag is smaller than the inner diameter of the cylinder.

[0011] Furthermore, a through hole is opened at the bottom of the push plate, and a bolt is fixedly connected to the bottom of the soft bag. The bottom of the bolt passes through the outside of the through hole, and a nut in contact with the push plate is threadedly connected to the surface of the bolt, and the diameter of the nut is larger than the inner diameter of the through hole.

[0012] Furthermore, a protective sleeve is fixedly connected between the inner top wall of the slide rail and the threaded sleeve, and the protective sleeve is sleeved on the surface of the threaded column.

[0013] Furthermore, the protective cover is a rubber material component, and the cross-sectional shape of the protective cover is wavy.

[0014] Furthermore, an adjustment handle is fixedly connected to the bottom of the threaded column, and the corners of the adjustment handle are rounded.

[0015] In summary, the beneficial effects of the present invention are:

[0016] 1. The propulsion structure can indirectly push the liquid upward through the soft bag, so that the liquid can be centrifuged in a relatively closed space. During the centrifugation and extraction operations, there is no need to open the surface of the soft bag, which effectively avoids liquid leakage and achieves the purpose of reducing the cost of blood seal extraction;

[0017] 2. The propulsion structure and the layered structure are designed to be detachable. After the staff has used the layered structure, the staff can remove the propulsion structure as a whole, which enables the propulsion structure to be reused, thereby reducing the cost of a single blood product liquid layered extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0021] Figure 3 It is an exploded schematic diagram of the layered structure in the utility model;

[0022] Figure 4 It is an exploded schematic diagram of the propulsion structure in the utility model.

[0023] The following are the descriptions of the reference numerals:

[0024] 1. Layered structure; 11. Sampling tube; 12. Adding and extracting components; 13. Transition tube; 14. Mixing tube; 15. Soft bag; 16. Bolt; 17. Nut; 2. Propelling structure; 21. Threaded barrel; 22. Cylinder; 23. Slide rail; 24. Threaded column; 25. Threaded sleeve; 26. Push plate; 27. Through hole; 28. Protective cover; 29. ​​Adjustment handle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 - Figure 4As shown, the utility model provides a device for extracting blood product liquid by stratification, comprising: a stratified structure 1; the stratified structure 1 comprises a sampling tube 11, an adding and extracting assembly 12, a transition tube 13, a mixing tube 14 and a soft bag 15, the adding and extracting assembly 12 is threadedly connected to the top of the sampling tube 11, the transition tube 13 is fixedly connected and connected to the bottom of the sampling tube 11, the mixing tube 14 is fixedly connected and connected to the bottom of the transition tube 13, the soft bag 15 is fixedly connected and connected to the bottom of the mixing tube 14, the adding and extracting assembly 12 comprises a top cover, a syringe The structures of the suction tube, exhaust port, sampling port and sample addition port are the same as the structure of the top cover and the sample addition assembly combined in the comparative patent, which is a well-known technology. The specific connection method and use method of the above structure are the same as those of the comparative patent, and are not repeated here; a through hole 27 is opened at the bottom of the push plate 26, and a bolt 16 is fixedly connected to the bottom of the soft bag 15, and the bottom of the bolt 16 passes through the outside of the through hole 27. The surface of the bolt 16 is threadedly connected with a nut 17 in contact with the push plate 26, and the diameter of the nut 17 is larger than the inner diameter of the through hole 27;

[0027] After the staff has finished extracting the liquid in layers, they first unscrew the nut 17 from the surface of the bolt 16. At this time, the connection between the nut 17 and the push plate 26 is lost. The staff can then unscrew the threaded barrel 21 from the surface of the mixing tube 14, so that the entire propulsion structure 2 is removed, which enables the propulsion structure 2 to be reused, thereby reducing the cost of a single blood product liquid layer extraction.

[0028] like Figure 2 and Figure 4As shown, the propulsion structure 2 is threadedly connected to the surface of the mixing tube 14, and the bottom of the soft bag 15 is fixedly connected to the propulsion structure 2; the propulsion structure 2 includes a threaded barrel 21, a cylinder 22, a slide rail 23, a threaded column 24, a threaded sleeve 25 and a push plate 26, the threaded barrel 21 is threadedly connected to the surface of the mixing tube 14, the cylinder 22 is fixedly connected to the bottom of the threaded barrel 21, the soft bag 15 is arranged inside the cylinder 22, the slide rail 23 is fixedly connected and communicated with the surface of the cylinder 22, and the threaded column 24 is rotatably connected to the slide The bottom of the threaded column 24 penetrates the outside of the rail 23, the threaded sleeve 25 is threadedly connected to the surface of the threaded column 24, the push plate 26 is fixedly connected to one end of the threaded sleeve 25, and one end of the push plate 26 penetrates the inside of the cylinder 22 and is fixedly connected to the soft bag 15; the soft bag 15 is a medical grade transparent PVC material component, and the sampling tube 11, the transition tube 13, the mixing tube 14 and the cylinder 22 are all transparent PET material components, which enables the staff to clearly observe the upper layer inside the layered structure 1 The division of liquid and lower layer liquid is convenient for the staff to accurately control the propulsion structure 2 to push the upper layer liquid; the diameter of the push plate 26 matches the inner diameter of the cylinder 22, and the diameter of the soft bag 15 is smaller than the inner diameter of the cylinder 22, which enables the propulsion structure 2 to be applicable to layered structures 1 of different specifications, thereby expanding the scope of application of the propulsion structure 2; a protective sleeve 28 is fixedly connected between the inner top wall of the slide rail 23 and the threaded sleeve 25, and the protective sleeve 28 is sleeved on the surface of the threaded column 24, which can separate the threaded column 24 from the soft bag 15 to prevent the threaded column 24 from scratching the soft bag 15 and further reduce the probability of liquid leakage; the protective sleeve 28 is a rubber material component, and the cross-sectional shape of the protective sleeve 28 is wavy, which enables the protective sleeve 28 to expand and contract with the rise and fall of the threaded sleeve 25 to meet the protection needs under different states; an adjustment handle 29 is fixedly connected to the bottom of the threaded column 24, and the corners of the adjustment handle 29 are rounded, which enables the staff to rotate the threaded column 24 more easily and stably, making the staff's adjustment work easier.

[0029] Working principle: The staff first transfers the blood into the sampling tube 11 through the adding and extracting component 12, and then places the layered structure 1 and the pushing structure 2 together with the blood in the centrifugal device for centrifugal layering operation. When the staff needs to extract the corresponding liquid by layering, the staff first inserts the syringe into the sampling tube 11 through the adding and extracting component 12, and then extracts the upper layer of liquid. In this process, the staff can rotate the threaded column 24 in the corresponding direction, and the threaded column 24 drives the threaded sleeve 25 to move up along the slide rail 23 through rotation, and the threaded sleeve 25 drives the push plate 26 to move up, and the push plate 26 squeezes the soft bag 15, so that the soft bag 15 can remove the internal liquid. The liquid is squeezed into the mixing tube 14, the mixing tube 14 guides the upward liquid into the transition tube 13, and the transition tube 13 guides the upward liquid into the sampling tube 11 until the syringe has extracted the upper layer of liquid. Then the staff only needs to unscrew the adding extraction component 12, and the staff can pour out the lower layer of liquid. Compared with the existing method of directly pushing the liquid, the entire propulsion structure 2 pushes the liquid through the soft bag 15, so that the liquid can be centrifuged and extracted in a relatively closed state without opening the surface of the soft bag 15, which effectively avoids liquid leakage to achieve the purpose of reducing the cost of blood sealing layer extraction.

[0030] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A device for extracting blood product liquid by stratification, characterized in that: include: Hierarchical structure (1); The layered structure (1) comprises a sampling tube (11), an addition and extraction component (12), a transition tube (13), a mixing tube (14) and a soft bag (15); the addition and extraction component (12) is threadedly connected to the top of the sampling tube (11); the transition tube (13) is fixedly connected to and communicated with the bottom of the sampling tube (11); the mixing tube (14) is fixedly connected to and communicated with the bottom of the transition tube (13); and the soft bag (15) is fixedly connected to and communicated with the bottom of the mixing tube (14); A propulsion structure (2) is threadedly connected to the surface of the mixing tube (14), and the bottom of the soft bag (15) is fixedly connected to the propulsion structure (2).

2. The device for extracting blood product liquid by stratification according to claim 1, characterized in that: The propulsion structure (2) comprises a threaded barrel (21), a cylinder (22), a slide rail (23), a threaded column (24), a threaded sleeve (25) and a push plate (26); the threaded barrel (21) is threadedly connected to the surface of the mixing tube (14); the cylinder (22) is fixedly connected to the bottom of the threaded barrel (21); the soft bag (15) is arranged inside the cylinder (22); the slide rail (23) is fixedly connected and communicated with the surface of the cylinder (22); the threaded column (24) is rotatably connected to the inside of the slide rail (23); the bottom of the threaded column (24) passes through the outside of the slide rail (23); the threaded sleeve (25) is threadedly connected to the surface of the threaded column (24); the push plate (26) is fixedly connected to one end of the threaded sleeve (25); one end of the push plate (26) passes through the inside of the cylinder (22) and is fixedly connected to the soft bag (15).

3. The device for extracting blood product liquid by stratification according to claim 2, characterized in that: The soft bag (15) is a medical-grade transparent PVC material component, and the sampling tube (11), transition tube (13), mixing tube (14) and cylinder (22) are all transparent PET material components.

4. The device for extracting blood product liquid by stratification according to claim 2, characterized in that: The diameter of the push plate (26) matches the inner diameter of the cylinder (22), and the diameter of the soft bag (15) is smaller than the inner diameter of the cylinder (22).

5. The device for extracting blood product liquid by stratification according to claim 2, characterized in that: A through hole (27) is provided at the bottom of the push plate (26); a bolt (16) is fixedly connected to the bottom of the soft bag (15); the bottom of the bolt (16) penetrates to the outside of the through hole (27); a nut (17) in contact with the push plate (26) is threadedly connected to the surface of the bolt (16); and the diameter of the nut (17) is larger than the inner diameter of the through hole (27).

6. The device for extracting blood product liquid by stratification according to claim 2, characterized in that: A protective sleeve (28) is fixedly connected between the inner top wall of the slide rail (23) and the threaded sleeve (25), and the protective sleeve (28) is sleeved on the surface of the threaded column (24).

7. The device for extracting blood product liquid by stratification according to claim 6, characterized in that: The protective sleeve (28) is a rubber material component, and the cross-sectional shape of the protective sleeve (28) is wavy.

8. The device for extracting blood product liquid by stratification according to claim 2, characterized in that: An adjustment handle (29) is fixedly connected to the bottom of the threaded column (24), and the corners of the adjustment handle (29) are rounded.

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