Automatic separation pinch device for plasma bag after centrifugation

Abstract

A kind of automatic separation pinch device of plasma bag after centrifugation, including prior art blood sampling machine main body and centrifuge table and from the inside of centrifuge table extends out and is used to transport blood and plasma transport catheter, the outer wall of two transport catheters is equipped with matching fixed table, while from the top of two fixed tables is equipped with the fixed channel of U-shaped arrangement, before assembly, catheter is placed in channel, prevent shaking, since the utility model machine drives bidirectional screw rod rotation, drive two sides telescopic table relative movement, make elastic clamp pad elastic cladding and compress catheter outer wall, the anti-skid convex point in the inside of elastic clamp pad and its elastic property, so that it can adapt to different specifications catheter, ensure firm and reliable, avoid the catheter sliding caused by the limitation of traditional U-shaped fixed table and unable to effectively clamp, the design not only realizes the quick automatic fixing and release of catheter, reduce the trouble of manual plug, more fundamentally guarantee the sealing stability of catheter and centrifuge cup connection end.

Description

Technical Field

[0001] This utility model relates to the technical field of blood collection machines, specifically to an automatic separation clamping device for plasma bags after centrifugation. Background Technology

[0002] Plasma centrifugation is a method of filtering and treating the human blood circulation using a blood separator. Commonly used disposable apheresis plasma separators, through their internal ultra-fine filters, can filter out larger chylous particles, heavy metals, and other substances from the blood, thereby improving blood vitality. This technology is also widely used in blood collection stations, where plasma (suspension) is separated and preserved separately during blood filtration, while the filtered blood is returned to the body to enhance post-donation recovery.

[0003] In the actual process of separating blood and plasma, blood is pumped into a centrifuge cup by a blood pump, and after centrifugation, it separates into layers. The upper plasma layer is then drawn into a plasma bag by a plasma pump. However, both blood and plasma require disposable tubing for transport when entering and leaving the centrifuge cup. Currently, the tubing is usually externally secured by a U-shaped fixing platform to prevent movement near the centrifuge cup. However, after use, the tubing must be removed from the fixing platform, which is cumbersome. Furthermore, although the tubing is confined inside the fixing platform and does not easily move, it may still slide relative to the inner wall of the platform. If the tubing is accidentally pulled, it can affect the seal between the tubing and the centrifuge cup, thus interfering with the normal operation of the equipment. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the problem that after the existing plasma centrifuge is completed, the tubing connected to the plasma bag needs to be manually pulled out, which is quite troublesome. In addition, the tubing is not well fixed by a single structure of fixed platform, which can cause it to slide during the centrifugation process and pose a safety hazard.

[0005] The technical solution adopted to solve the above technical problems is:

[0006] An automatic separation clamping device for plasma bags after centrifugation includes a blood collection machine body and a centrifuge table, as well as delivery conduits extending from the centrifuge table for transporting blood and plasma. The outer walls of both delivery conduits are provided with matching fixing platforms, and the tops of both fixing platforms are provided with U-shaped fixing channels. The conduits are placed within these channels. The interiors of both fixing channels are provided with opposing elastic clamps. The outer walls of multiple elastic clamps are connected to telescopic platforms. The interiors of both fixing platforms are provided with clamping mechanisms to control the relative movement of adjacent telescopic platforms. After the conduits are placed within the fixing channels, the clamping mechanisms control the relative movement of the telescopic platforms, causing the elastic clamps to elastically cover the outer surface of the conduits, thus fixing their position.

[0007] As a preferred technical solution of this utility model, the clamping mechanism includes a bidirectional lead screw rotatably installed inside the fixed platform. One end of the bidirectional lead screw is connected to a motor. The rod wall of the bidirectional lead screw is threadedly connected to connecting plates. One side of each of the two connecting plates is fixedly connected to a corresponding telescopic platform. The outer walls of the two telescopic platforms are slidably connected to guide platforms. Both guide platforms are fixedly installed inside the fixed platform.

[0008] As a preferred embodiment of this utility model, each of the multiple telescopic platforms has a groove inside, each of the multiple grooves is connected to a buffer spring, the other end of each of the multiple buffer springs is connected to a slider, and each of the multiple sliders is provided with a pressure sensor on the side near the corresponding elastic pad.

[0009] As a preferred embodiment of this utility model, the multiple sliders are slidably connected inside the corresponding grooves, and the inner sidewalls of the multiple elastic pads extend towards the center with anti-slip protrusions to improve the fixing effect.

[0010] As a preferred embodiment of this utility model, a flow sensor is provided directly below each of the two fixed channels, and a distance sensor is provided above each of the two fixed channels. Both sets of distance sensors and flow sensors are connected to the fixed platform.

[0011] As a preferred embodiment of this utility model, both the input and output ends of the two fixed channels are provided with guide grooves facing outwards.

[0012] As a preferred technical solution of this utility model, a control screen is installed on the rear side of the upper surface of the blood collection machine body. A nerve rod is threadedly connected to the top of the blood collection machine body near the control screen. A weighing device is connected to the upper end of the nerve rod. A hook is connected to the load-bearing end of the weighing device. The control screen is electrically connected to a pressure sensor, a motor, a distance sensor, and a flow sensor. The data from the detection points are all displayed on the control screen.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model effectively solves the problems of cumbersome operation, easy slippage, and potential sealing risks of existing fixing methods by setting an adaptive clamping mechanism. Specifically, after the conduit is placed in the fixing channel, the motor drives the bidirectional lead screw to rotate, which drives the two telescopic platforms on both sides to move relative to each other. This allows the elastic pad to elastically cover and press the outer wall of the conduit. The anti-slip protrusions on the inner side of the elastic pad and its own elastic properties enable it to adapt to conduits of different specifications, ensuring a firm and reliable fixation. This avoids the conduit slippage caused by the limited positioning and ineffective clamping of the traditional U-shaped fixing platform. This design not only realizes the rapid automatic fixing and release of the conduit, reducing the trouble of manual insertion and removal, but also fundamentally ensures the sealing stability of the connection between the conduit and the centrifuge cup, improving the safety and reliability of the equipment operation.

[0015] 2. This utility model achieves efficient and stable clamping while integrating intelligent monitoring and protection functions, further improving the convenience and automation of operation; it monitors the clamping force in real time through a pressure sensor and forms a buffer with a buffer spring to ensure that the clamping force is within a safe range, preventing damage to the conduit and ensuring the fixation effect.

[0016] The flow sensor and distance sensor can monitor the fluid state inside the catheter and the operator's hand position, respectively. When the process ends or a hand approaches, the motor can be automatically triggered to release the catheter, realizing intelligent management. All sensor data and equipment status are centrally displayed and set through the control panel, which optimizes human-machine interaction and significantly improves the efficiency and automation level of plasma separation operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the external structure of the fixing platform of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the main body of the fixing platform of this utility model;

[0020] Figure 4 for Figure 3 A partially enlarged structural diagram.

[0021] In the diagram: 1. Blood collection machine body; 2. Centrifuge table; 3. Delivery conduit; 4. Fixed platform; 5. Fixed channel; 6. Guide groove; 7. Elastic clamp; 8. Telescopic platform; 9. Pressure sensor; 10. Slider; 11. Groove; 12. Buffer spring; 13. Connecting plate; 14. Guide platform; 15. Bidirectional lead screw; 16. Motor; 17. Distance sensor; 18. Flow sensor; 19. Control panel; 20. Nerve rod; 21. Weighing device; 22. Hook. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0027] Example 1

[0028] exist Figures 1-4This utility model provides a technical solution: an automatic separation clamping device for plasma bags after centrifugation, specifically including a blood collection machine body 1 and a centrifuge table 2 as in the prior art, and a delivery conduit 3 extending from the inside of the centrifuge table 2 for transporting blood and plasma. The outer walls of both delivery conduits 3 are provided with matching fixing platforms 4, and U-shaped fixing channels 5 are provided from the top of both fixing platforms 4. Before assembly, the conduit is placed in the channel to prevent shaking. Elastic clamping pads 7 are provided relatively inside both fixing channels 5, and telescopic platforms 8 are connected to the outer walls of multiple elastic clamping pads 7. The elastic clamping pads 7 are arc-shaped relative to the telescopic platforms 8, and the material can be freely stretched, such as rubber. The interior of both fixing platforms 4 is provided with a clamping mechanism to control the relative movement between adjacent telescopic platforms 8. After the conduit is placed inside the fixing channel 5, the clamping mechanism controls the relative movement of the telescopic platforms 8 on both sides, causing the elastic clamping pads 7 to elastically cover the outer surface of the conduit, achieving position fixation. It should be further noted that, due to its own stretching characteristics, the elastic clamping pads 7 can adapt to the conduit specifications, allowing for fixation when using disposable consumable conduits of different specifications, improving practicality.

[0029] In one aspect of this embodiment, the clamping mechanism specifically includes a bidirectional lead screw 15 rotatably mounted inside the fixed platform 4. One end of the bidirectional lead screw 15 is connected to a motor 16. The rod wall of the bidirectional lead screw 15 is threadedly connected to connecting plates 13. One side of each connecting plate 13 is fixedly connected to a corresponding telescopic platform 8. The outer walls of both telescopic platforms 8 are slidably connected to guide platforms 14. Both guide platforms 14 are fixedly mounted inside the fixed platform 4. The motor 16 drives the bidirectional lead screw 15 to rotate and, under the limit of the guide platforms 14, controls the telescopic platforms 8 on both sides to move relative to or in opposite directions, thereby realizing the operation of fixing and contacting the conduit with the elastic clamp 7.

[0030] In one aspect of this embodiment, grooves 11 are provided inside the multiple telescopic platforms 8, and buffer springs 12 are connected inside the multiple grooves 11. The other end of the multiple buffer springs 12 is connected to a slider 10. Each slider 10 is provided with a pressure sensor 9 on the side near the corresponding elastic pad 7. The pressure sensor 9 is set with a certain pressure value. Within this pressure value, the outer wall of the guide tube will not be squeezed and deformed. At the same time, it works with the motor 16 to quickly achieve fixation. The multiple sliders 10 are slidably connected inside the corresponding grooves 11. The inner sidewalls of the multiple elastic pads 7 extend anti-slip protrusions towards the center to improve the fixation effect.

[0031] In one aspect of this embodiment, a flow sensor 18 is provided directly below each of the two fixed channels 5, and a distance sensor 17 is provided above each of the two fixed channels 5. The flow sensor 18 monitors in real time whether the fluid being transported in the conduit is normal. At the same time, in conjunction with the distance sensor 17, when the hand is in a certain position during the removal of consumables, a signal is automatically sent to the motor 16 to release the conduit from the fixed position. Both sets of distance sensors 17 and flow sensors 18 are connected to the fixed platform 4.

[0032] In one aspect of this embodiment, guide grooves 6 are provided at both the input and output ends of the two fixed channels 5, with the direction facing outward.

[0033] In one aspect of this embodiment, a control panel 19 is installed on the rear side of the upper surface of the blood collection machine body 1. A nerve rod 20 is threadedly connected to the top of the blood collection machine body 1 near the control panel 19. A weighing device 21 is connected to the upper end of the nerve rod 20. A hook 22 is connected to the load-bearing end of the weighing device 21. The control panel 19 is electrically connected to the pressure sensor 9, the motor 16, the distance sensor 17, and the flow sensor 18. The data detected are all displayed on the control panel 19. It should also be noted that the functions of the pressure sensor 9, the motor 16, the distance sensor 17, and the flow sensor 18 can all be set through the control panel 19.

[0034] The working principle of this utility model is as follows: At the start of operation, the centrifuge cup is assembled. Then, the operator places the delivery tube 3 extending from the centrifuge cup into the U-shaped fixed channel 5 on the top of the two fixed platforms 4. The tube is easily inserted under the guidance of the guide groove 6. Subsequently, the equipment is started through the control panel 19, and the motor 16 starts working, driving the bidirectional lead screw 15 inside the fixed platform 4 to rotate. The rotational motion of the bidirectional lead screw 15 is converted into the opposite linear movement of the telescopic platforms 8 on both sides through the connecting plate 13 connected to it. The movement of the telescopic platforms 8 is limited by the guide platform 14 to ensure accurate direction. The telescopic platforms 8 push the elastic clamps 7 at their ends to gradually close, elastically covering and pressing the outer wall of the tube. The anti-slip protrusions on the inner side of the elastic clamps 7 increase the friction, ensuring that the tube is firmly fixed and preventing it from sliding or shifting during centrifugation. During this process, the slider 10 is set with... The pressure sensor 9 monitors the clamping force in real time, and the buffer spring 12 provides buffering to prevent excessive pressure from deforming the catheter. At the same time, the flow sensor 18 continuously monitors the fluid flow in the catheter to ensure normal blood and plasma delivery. When the centrifugation process is over and the catheter needs to be removed, the operator's hand approaches the fixed platform, the distance sensor 17 detects the signal and feeds it back to the control panel 19. The control panel 19 then instructs the motor 16 to reverse, driving the bidirectional screw 15 to move the telescopic platform 8 and the elastic clamping pad 7 in the opposite direction, thereby automatically releasing the clamp on the catheter. The operator can then easily remove the catheter. In addition, the weighing device 21 on the side of the device can weigh the collected plasma bag through the hook 22. The data is displayed on the control panel 19 in real time for easy recording and management. The entire process realizes intelligent operation from automatic clamping and fixing of the catheter, process status monitoring to automatic release after completion.

[0035] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic separation clamping device for plasma bags after centrifugation, comprising a blood collection machine body (1) and a centrifuge table (2) and a delivery conduit (3) extending from inside the centrifuge table (2) for delivering blood and plasma, characterized in that: Both of the two delivery conduits (3) have matching fixed platforms (4) on their outer side walls. Both fixed platforms (4) have U-shaped fixed channels (5) on their tops. The conduit is placed in the channel. Both fixed channels (5) have elastic pads (7) arranged opposite to each other inside. The outer side walls of multiple elastic pads (7) are connected to telescopic platforms (8). Both fixed platforms (4) have clamping mechanisms inside that control the relative movement of adjacent telescopic platforms (8). After the conduit is placed inside the fixed channel (5), the clamping mechanism controls the relative movement of the telescopic platforms (8), causing the elastic pads (7) to elastically cover the outer surface of the conduit, thereby fixing the position.

2. The automatic separation clamping device for plasma bags after centrifugation according to claim 1, characterized in that: The clamping mechanism includes a bidirectional lead screw (15) rotatably installed inside the fixed platform (4). One end of the bidirectional lead screw (15) is connected to a motor (16). The rod wall of the bidirectional lead screw (15) is threadedly connected to a connecting plate (13). One side of each of the two connecting plates (13) is fixedly connected to a corresponding telescopic platform (8). The outer walls of both telescopic platforms (8) are slidably connected to guide platforms (14). Both guide platforms (14) are fixedly installed inside the fixed platform (4).

3. The automatic separation clamping device for plasma bags after centrifugation according to claim 2, characterized in that: Each of the multiple telescopic platforms (8) has a groove (11) inside, and each of the multiple grooves (11) is connected to a buffer spring (12). The other end of each of the multiple buffer springs (12) is connected to a slider (10). Each of the multiple sliders (10) has a pressure sensor (9) on the side near the corresponding elastic pad (7).

4. The automatic separation clamping device for plasma bags after centrifugation according to claim 3, characterized in that: Multiple sliders (10) are slidably connected inside the corresponding grooves (11), and the inner sidewalls of multiple elastic pads (7) extend to the center with anti-slip protrusions to improve the fixing effect.

5. The automatic separation clamping device for plasma bags after centrifugation according to claim 1, characterized in that: A flow sensor (18) is provided directly below each of the two fixed channels (5), and a distance sensor (17) is provided above each of the two fixed channels (5). Both sets of distance sensors (17) and flow sensors (18) are connected to the fixed platform (4).

6. The automatic separation clamping device for plasma bags after centrifugation according to claim 1, characterized in that: The two fixed channels (5) are provided with guide grooves (6) facing outward at both the input and output ends.

7. The automatic separation clamping device for plasma bags after centrifugation according to claim 6, characterized in that: A control panel (19) is installed on the rear side of the upper surface of the blood collection machine body (1). A nerve rod (20) is threadedly connected to the top of the blood collection machine body (1) near the control panel (19). A weighing device (21) is connected to the upper end of the nerve rod (20). A hook (22) is connected to the load-bearing end of the weighing device (21). The control panel (19) is electrically connected to the pressure sensor (9), the motor (16), the distance sensor (17), and the flow sensor (18). The data from the detection points are all displayed on the control panel (19).

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