Equipment for collecting peripheral blood
By designing a peripheral blood collection device including an operating part and an injection part, the problem that existing equipment cannot accurately control the collection amount and additive dose is solved, and the quality of blood samples and patient safety is improved.
Patent Information
- Application Number
- CN202421647572.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-12
AI Technical Summary
Existing peripheral blood collection equipment lacks precise metering function, is difficult to control the collection amount, and lacks the function of adding cell-protective agents and other reagents downstream of blood collection, which affects the quality of blood samples and patient safety.
An apparatus including an operating part, a first injection part, a second injection part, a needle, a catheter and a collection bag is designed, and the piston movement of the first and second injection parts is controlled by a moving mechanism to achieve precise control of the blood collection amount and the additive dose.
It realizes accurate metering of the peripheral blood collection process and precise addition of reagents, improving the quality of blood samples and the safety and reliability of the collection process.
Smart Images
Figure CN223169742U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of blood collection, in particular to a peripheral blood collection device. Background Art
[0002] As an emerging medical technology, stem cell therapy has been widely used in the treatment of various diseases. The collection of peripheral blood plays a crucial role in the process of stem cell therapy. Regularly collecting the blood samples of patients is not only a basic means to monitor the treatment effect, but also an important step to detect possible side effects. Therefore, the design and improvement of peripheral blood collection devices are of great significance for the successful implementation of stem cell therapy. During the process of stem cell therapy, doctors need to regularly collect the peripheral blood samples of patients to monitor the treatment effect, including the behavior of stem cells in the body, immune responses, and potential side effects, etc. By analyzing these samples, doctors can adjust the treatment plan to optimize the treatment effect and minimize adverse reactions. In addition, regular blood collection can also help doctors detect and handle problems that may occur during the treatment process in a timely manner, improving the safety and effectiveness of stem cell therapy.
[0003] There are still some technical problems to be solved in the prior art during the peripheral blood collection process. First of all, once normal blood leaves the human body, it will coagulate, which not only affects the quality of the blood sample, but also may cause the sample to be unusable for subsequent analysis and detection. In addition, in order to ensure that the blood sample is suitable for subsequent detection and analysis, cell protectants, cell labeling agents, enzyme inhibitors, diluents or stabilizers, etc. will be added downstream of blood collection. However, the existing blood collection devices lack the above functions, and the amount of the above substances added is difficult to be accurately controlled. In addition, the existing peripheral blood collection devices lack metering during the collection process. And when collecting venous blood, due to individual differences, some donors have lower venous blood pressure, resulting in difficult collection processes. It is also difficult for the collection personnel to accurately control the amount of blood collected each time, which may lead to insufficient or excessive sample volumes. Insufficient sample volume may affect the accuracy of the test results, while excessive samples may increase the discomfort of patients and the risks during the blood collection process. In view of the above technical problems existing in the prior art, the utility model provides a device that can accurately measure the amount of peripheral blood collected, and has a component for adding specific reagents downstream of blood collection, as well as a precise control component for the blood collection volume, which can improve the accuracy and reliability of the blood collection process. Summary of the Invention
[0004] The present utility model provides a device for collecting peripheral blood. The device is provided with an operation part, a first injection part, a second injection part, a needle, a first catheter, a second catheter, a third catheter and a collection bag; the needle is communicated with a second connector through the first catheter, and at the same time, the second connector is also communicated with the second injection part and the second catheter; a second piston is arranged inside the second injection part, and the displacement of the second piston pushes the additive inside the second injection part into the downstream of blood collection; the outlet below the first injection part is connected to a first connector, and the first connector is also communicated with the collection bag and the second catheter. A first piston is arranged inside the first injection part, and the displacement of the first piston inside the first injection part enables the first injection part to provide a vacuum suction force to the collection bag; a moving mechanism for moving the first piston and the second piston in opposite directions is further arranged on the operation part.
[0005] Furthermore, the end of the first piston of the first injection part located outside the first injection part is a first end face, and the first end face is disc-shaped; the end of the second piston of the second injection part located outside the second injection part is a second end face, and the second end face is disc-shaped; the first end face is buckled on a first bracket, and the second end face is buckled on a second bracket. The first bracket is vertically clamped in a groove on the first tooth surface of the first rack, and the second bracket is vertically clamped in a groove on the second tooth surface of the second rack; the moving mechanism drives the first rack and the second rack to move in opposite directions through gears rotating in different directions arranged thereon. Through the above settings, the present utility model can control the first injection part and the second injection part simultaneously only by rotating the moving mechanism. By adjusting the diameters of the first injection part 2 and the second injection part 20, the displacement distance or speed of the pistons therein, the blood collection volume and the additive delivery volume can be accurately controlled as required. Description of the Drawings
[0006] Figure 1 It is a schematic structural diagram of the device for collecting peripheral blood of the present utility model. Detailed Embodiment
[0007] The following will describe in detail the embodiments of the present utility model in conjunction with the embodiments, so as to fully understand the implementation process of how to apply technical means to solve technical problems and achieve technical effects and implement accordingly.
[0008] The device of the present utility model is used for collecting peripheral blood, as shown in the attached Figure 1As shown, the device 1 includes an operation part 7, a first injection part 2, a second injection part 20, a needle 10, a first catheter 12, a second catheter 14, a third catheter 16, and a collection bag 18. The first injection part 2 is used to provide a vacuum suction force to the collection bag 18. A first piston 4 is provided inside the first injection part 2. The displacement of the first piston 4 inside the first injection part 2 enables the first injection part 2 to perform a suction action. The end of the first piston 4 of the first injection part 2 located outside the first injection part 2 is a first end face 6. The first end face 6 is disc-shaped. The outlet of the first injection part 2 is connected to a first connector 8. The first connector 8 is also connected to the collection bag 18 and the second catheter 14. The device 1 for collecting peripheral blood further includes a second injection part 20. A second piston 22 is provided inside the second injection part 20. The displacement of the second piston 22 inside the second injection part 20 enables the second injection part 20 to perform a suction action. The end of the second piston 22 of the second injection part 20 located outside the second injection part 20 is a second end face 24. The second injection part 20 is used to release an additive liquid to the downstream of blood collection.
[0009] The needle 10 of the device 1 of the present utility model is connected to a second connector 26 through the first catheter 12. At the same time, the second connector 26 is also connected to the second injection part 20 and the second catheter 14. Thus, blood reaches the first catheter 12 through the needle 10. At the second connector 26, the second injection part 20 can inject an additive to the downstream of blood collection. The mixture of blood and the additive then is transported along the second catheter 14 to the first connector 8. The upper part of the first connector 8 is connected to the first injection part 2 that provides a vacuum force. Due to gravity, blood continues to be transported downward by the third catheter 16 to the collection bag 18 at the first connector 8. The device 1 for collecting peripheral blood further includes a first bracket 11 for fixing the first injection part 2 and a second bracket 17 for fixing the second injection part 20. The first end face 6 is snapped onto a first bracket 13 provided on the operation part 7. The second end face 24 is snapped onto a second bracket 21 provided on the operation part 7. The first bracket 13 is vertically clamped in a groove of a first tooth surface 27 of a first rack 41. The second bracket 21 is vertically clamped in a groove of a second tooth surface 29 of a second rack 43.
[0010] The operation part 7 is also provided with a moving mechanism 23 for moving the first bracket 13 and the second bracket 21 in opposite directions, so as to precisely control the amount of collected blood and the amount of added additive. During the blood collection process, the moving mechanism 23 drives the first rack 41 and the second rack 43 to move in opposite directions through gears rotating in different directions provided thereon. The movement of the first rack 41 causes the first injection part 2 to generate a vacuum suction force, and the movement of the second rack 43 causes the additive in the second injection part 20 to be sent out. During the blood collection process, the suction flow rate of the first injection part 2 is greater than the delivery volume of the second injection part 20, so the diameter of the first injection part 2 is larger than that of the second injection part 20. Both the first rack 41 and the second rack 43 are equipped with stop members 45 provided on the operation part 7 for restricting the maximum displacement of the first rack 41 and the second rack 43. Through the above settings, the present utility model can manually or electrically automatically control the rotation of the moving mechanism 23, which simultaneously drives the first rack 41 and the second rack 43 to move in opposite directions. Thus, the first tooth surface 27 of the first rack 41 is transmitted to the first bracket 13 and the first end face 6, and finally drives the first piston 4 to move upward, so that the first injection part 2 generates a suction force; similarly, the rotation of the moving mechanism 23 drives the second rack 43 to move, and the second tooth surface 29 is transmitted to the second bracket 21 and the second end face 24, and finally drives the second piston 22 to move downward, so that the additive in the second injection part 20 is injected into the downstream end of the blood collection. By adjusting the diameters of the first injection part 2 and the second injection part 20, the displacement distance or speed of the pistons therein, the blood collection volume and the additive delivery volume can be precisely controlled as required.
[0011] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An apparatus (1) for collecting peripheral blood, characterized in that, The device (1) is provided with an operation part (7), a first injection part (2), a second injection part (20), a needle (10), a first catheter (12), a second catheter (14), a third catheter (16) and a collection bag (18); the needle (10) communicates with a second joint (26) through the first catheter (12), and at the same time the second joint (26) is also in communication with the second injection part (20) and the second catheter (14); a second piston (22) is arranged inside the second injection part (20), and the displacement of the second piston (22) pushes the additive inside the second injection part (20) into the downstream of blood collection; the outlet below the first injection part (2) is connected to a first joint (8), the first joint (8) is also in communication with the collection bag (18) and the second catheter (14), a first piston (4) is arranged inside the first injection part (2), and the displacement of the first piston (4) inside the first injection part (2) enables the first injection part (2) to provide a vacuum suction force to the collection bag (18); the operation part (7) is further provided with a moving mechanism (23) for moving the first piston (4) and the second piston (22) in opposite directions.
2. The device (1) according to claim 1, characterized in that, The end of the first piston (4) of the first injection part (2) located outside the first injection part (2) is a first end face (6), and the first end face (6) is disc-shaped; the end of the second piston (22) of the second injection part (20) located outside the second injection part (20) is a second end face (24), and the second end face (24) is disc-shaped; the first end face (6) is buckled on a first bracket (13), and the second end face (24) is buckled on a second bracket (21).
3. The device (1) according to claim 2, characterized in that, The first bracket (13) is vertically clamped in a groove of a first tooth surface (27) of a first rack (41), and the second bracket (21) is vertically clamped in a groove of a second tooth surface (29) of a second rack (43); the moving mechanism (23) drives the first rack (41) and the second rack (43) to move in opposite directions through gears rotating in different directions provided thereon.