Blood component separator

Abstract

The application relates to the technical field of medical devices, and discloses a blood component separation machine which comprises a main body, a squeezing mechanism, a mounting mechanism and a mixing mechanism. The squeezing mechanism comprises a moving plate and a squeezing driving assembly, and the squeezing driving assembly is used for driving the moving plate to move. The mixing mechanism comprises a tray and a mixing driving assembly, and the mixing driving assembly is used for driving the tray to rotate between a first position and a second position. After squeezing separation is performed on a mother bag, maintenance liquid or other liquid is injected into the mother bag, the liquid in the mother bag is mixed through tray overturning, the tray is turned back to the first position, and after the mother bag is statically layered, squeezing separation can be continuously performed, manual operation for taking and placing the mother bag is not required, the mother bag can be subjected to on-line squeezing separation, liquid injection, mixing and secondary squeezing separation, the continuity of operation is guaranteed, manual intervention is reduced, and the processing efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a blood component separator. Background Technology

[0002] Blood component separators are used to separate different components from blood. Typically, a blood component separator is set up to hold the blood bag (mother bag) containing the components to be separated. A moving extrusion plate squeezes the blood bag, forcing the components to be separated (such as plasma) out of the mother bag and into other containers (such as other blood bags) through tubing. In related technologies, after separating the blood components from the mother bag, red blood cells are retained. A red blood cell preservation solution is injected into the mother bag. Then, the mother bag must be manually removed and placed in a shaking device for mixing, or manually shaken after removal. This process is cumbersome and lacks continuity. Manual shaking also results in uneven mixing, affecting the separation effect and component quality. Utility Model Content

[0003] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a blood component separator.

[0004] The blood component separator of this application embodiment includes a main body, a squeezing mechanism, a mounting mechanism, and a mixing mechanism;

[0005] One side of the main body has a fixing plate;

[0006] The extrusion mechanism includes a movable plate and an extrusion drive assembly. The movable plate is disposed opposite to the fixed plate. The extrusion drive assembly is connected to the main body and the movable plate and is used to drive the movable plate to move closer to or away from the fixed plate.

[0007] The mounting mechanism is connected to the main body;

[0008] A mixing mechanism includes a tray and a mixing drive assembly connected to the main body and the tray, for driving the tray to rotate between a first position and a second position; in the first position, the tray is located between the moving plate and the fixed plate and below the mounting mechanism, the mounting mechanism being at least partially located on the side of the tray facing away from the fixed plate, for suspending blood bags; in the second position, the tray is at least partially rotated to a position higher than the mounting mechanism, so that the bottom of the blood bag is flipped over to above the suspension position.

[0009] The blood component separator according to the embodiments of this application has at least the following beneficial effects: it facilitates the accurate and efficient separation of blood components. After the mother bag is squeezed and separated, a preservative solution or other liquid is injected into the mother bag. The remaining components in the mother bag can be mixed with the newly added liquid by flipping the tray. After the mixing operation, the tray can be rotated back to the first position. After the mother bag is allowed to stand and separate into layers, it can continue to be squeezed and separated. There is no need for multiple manual operations to pick up and put down the mother bag. The mother bag can be squeezed, separated, injected, mixed, and squeezed and separated again online, ensuring the continuity of operation. This not only improves processing efficiency but also reduces the adverse effects of problems such as mounting position errors and differences in mixing effect caused by manual intervention on the separation effect.

[0010] According to some embodiments of the blood component separator of this application, a plurality of sensors are arranged at intervals along the vertical direction on the outer side of the fixed plate; the tray is provided with a first clearance opening through both sides of the tray. When the tray is in the first position, the first clearance opening corresponds to the sensor, and the sensor is used to detect the layering of the remaining blood components in the blood bag through the first clearance opening.

[0011] According to some embodiments of the present application, the main body of the blood component separator includes a chassis, a fixing plate is fixed to one side of the chassis, and a sensor is disposed on the side of the chassis facing the fixing plate; the fixing plate is provided with a second clearance opening corresponding to the position of the sensor for avoiding the sensor.

[0012] Alternatively, the fixing plate serves as one side wall of the main body, and the fixing plate has a receiving groove for accommodating the sensor, which is housed in the receiving groove and fixedly connected to the fixing plate.

[0013] According to some embodiments of the blood component separator of this application, the tray has a first extrusion surface and a second extrusion surface opposite to each other; when the tray is in the first position: the first extrusion surface abuts against the fixed plate, and the second extrusion surface faces the moving plate, for abutting against one side outer wall of the blood bag, and is arranged parallel to the moving plate; according to some embodiments of the blood component separator of this application, when the tray is in the second position, there is an angle between the second extrusion surface and the fixed plate, and the angle is an obtuse angle.

[0014] According to some embodiments of the blood component separator of this application, the upper end of the tray is provided with a notch, the notch corresponding to the position of the mounting mechanism, for avoiding the mounting mechanism during the tray flipping process.

[0015] According to some embodiments of the blood component separator of this application, the mixing drive assembly includes a mixing motor and a transmission device. The mixing motor is fixed to the main body, and the transmission device connects the output end of the mixing motor to the tray. The mixing motor drives the tray to rotate through the transmission device to control the rotation angle and frequency of the tray.

[0016] According to some embodiments of the blood component separator of this application, the mounting mechanism includes:

[0017] A connector is movably connected to the main body along the first direction. A first inclined surface is provided on one side of the connector. The first inclined surface is forward and downward along the first direction. An abutment portion is provided on the rear side of the first inclined surface of the connector.

[0018] A needle-hanging assembly is connected to the connector and extends forward along the first direction. The needle-hanging assembly is located above the fixing plate and is used to hang blood bags.

[0019] A linkage component is connected to the extrusion drive component and the connector. The linkage component is driven by the extrusion drive component and moves with the movement of the moving plate.

[0020] Specifically, when the movable plate is in the initial position, the linkage component abuts against the first inclined surface to restrict the rearward movement of the connector; when the movable plate moves in front of the initial position, the linkage component remains abutting against the first inclined surface; when the movable plate moves backward behind the initial position, the linkage component abuts against the abutting part at a set position to drive the connector to move backward.

[0021] According to some embodiments of the blood component separator of this application, the main body is provided with a control module and a detection module. The detection module is used to detect at least one of the operating status of the extrusion mechanism, the operating status of the mounting mechanism, and the operating status of the mixing mechanism. The control module is communicatively connected to the extrusion mechanism and the mixing mechanism. The control module is used to control the start and stop of the extrusion mechanism and the mixing mechanism according to the data of the detection module.

[0022] According to some embodiments of the blood component separator of this application, the control module is further configured to control the tray to be located in the first position so as to hang the centrifuged blood mother bag on the mounting mechanism;

[0023] The squeezing drive assembly is controlled to move the moving plate toward the tray and squeeze the mother bag, squeezing the first blood component in the mother bag into the first dispensing bag connected to the mother bag, thereby cutting off the passage between the first dispensing bag and the mother bag;

[0024] The moving plate is controlled to move to the avoidance position, the maintenance liquid is injected into the mother bag, and the mixing drive component is controlled to drive the tray to rotate multiple times at a preset angle and frequency, so that the tray is located in the first position.

[0025] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a blood component separator according to an embodiment of this application, showing the tray in a first position;

[0027] Figure 2 for Figure 1 Another schematic diagram of the embodiment shown illustrates the state in which the tray is in the second position;

[0028] Figure 3 This is a front view of a blood component separator according to an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of a mixing mechanism in one embodiment of the present application, showing the tray in a second position.

[0030] Figure 5 This is a front view of a mixing mechanism according to an embodiment of the present application, showing the tray in a first position;

[0031] Figure 6 This is a partial structural schematic diagram of the mounting mechanism and the extrusion mechanism in one embodiment of this application;

[0032] Figure 7 for Figure 6 Another schematic diagram of the structure shown illustrates the state of the moving plate in its initial position.

[0033] Figure 8 This is a schematic diagram of a four-piece blood bag.

[0034] Figure label:

[0035] Main body 100;

[0036] Fixed plate 110; Second clearance opening 111; Receiving groove 112;

[0037] Chassis 120;

[0038] Mounting mechanism 200;

[0039] Connector 210; First inclined surface 211; Abutment part 212;

[0040] 220 pin mounting assembly;

[0041] Linkage component 230; guide component 231; first guide groove 2311; second guide groove 2312; follower component 232; first stroke 232a; second stroke 232b; second inclined surface 2321; guide section 2322;

[0042] Extrusion mechanism 300;

[0043] Mobile board 310;

[0044] Extrusion drive assembly 320; extrusion motor 321; timing belt mechanism 322; drive shaft 323; drive component 324;

[0045] First fixing plate 330; Second fixing plate 340; Top pressing plate 350;

[0046] Mixing mechanism 400;

[0047] Pallet 410; First clearance opening 411; First extrusion surface 412; Second extrusion surface 413; Notch 414;

[0048] Mixing drive assembly 420; mixing motor 421; transmission device 422; rotating shaft 423;

[0049] Sensor 500;

[0050] 600 stopper opening mechanism; 610 stopper opening rod; 620 rotating mechanism;

[0051] Initial position A; Origin position B; Mother bag C; First dispensing bag D; Second dispensing bag E; Maintenance solution bag F. Detailed Implementation

[0052] The following will clearly and completely describe the concept and technical effects of this application in conjunction with embodiments, so as to fully understand the purpose, features and effects of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application.

[0053] In the description of the embodiments of this application, if directional descriptions are involved, such as "up", "down", "front", "back", "left", "right" etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0054] In the description of the embodiments of this application, if a feature is referred to as "setting," "fixing," "connecting," or "installing" on another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of this application, if "several" is involved, it means one or more; if "multiple" is involved, it means two or more; if "greater than," "less than," or "exceeds," it should be understood as excluding the stated number; if "above," "below," or "within," it should be understood as including the stated number. If "first" or "second" is involved, it should be understood as used to distinguish technical features, and not as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0055] refer to Figure 1 and Figure 2 The blood component separator of this application includes: a main body 100, a squeezing mechanism 300, a mounting mechanism 200 and a mixing mechanism 400.

[0056] The main body 100 has a fixing plate 110 on one side, and a mounting mechanism 200 is connected to the main body 100 for mounting a blood bag (mother bag C) to be separated on the front side of the fixing plate 110. A mixing mechanism 400 is used to flip the mother bag C to mix the liquid in the mother bag C. A squeezing mechanism 300 is used to squeeze the mother bag C so that the stratified blood components in the mother bag C flow out from the pipe connected to the mother bag C to other containers (e.g., daughter bags for collecting blood components) to achieve component separation.

[0057] The extrusion mechanism 300 includes a movable plate 310 and an extrusion drive assembly 320. The movable plate 310 is disposed opposite to the fixed plate 110. The extrusion drive assembly 320 is connected to the main body 100 and the movable plate 310, and is used to drive the movable plate 310 to move closer to or further away from the fixed plate 110. The mixing mechanism 400 includes a tray 410 and a mixing drive assembly 420. The mixing drive assembly 420 is connected to the main body 100 and the tray 410, and is used to drive the tray 410 to rotate between a first position and a second position.

[0058] When the tray 410 is in the first position, the tray 410 is located between the movable plate 310 and the fixed plate 110 and below the mounting mechanism 200. The mounting mechanism 200 is at least partially located on the side of the tray 410 facing away from the fixed plate 110, and is used to suspend the blood bag (the mother bag C in the figure, which will be used as an example in the following description) so that the mother bag C is suspended between the tray 410 and the movable plate 310. Thus, after the movable plate 310 moves toward the tray 410 to contact the mother bag C, it can continue to move to squeeze the mother bag C to perform the separation operation.

[0059] When tray 410 is in the second position, it rotates at least partially to a position above the mounting mechanism 200, causing the bottom of the blood bag (shown as mother bag C in the figure, which will be used as an example in the following explanation) to flip over and be positioned above the hanging position. This allows the liquid inside mother bag C to be mixed by flipping, eliminating the need to remove mother bag C from the mounting mechanism 200 and simplifying manual operation. Multiple rotations of tray 410 accelerate mixing, improving mixing efficiency and quality. The rotation angle and frequency of tray 410 can be adjusted according to mixing requirements to ensure uniform distribution of blood components and preservation solution.

[0060] After the mother bag C is squeezed and separated, a preservative solution or other liquid is injected into the mother bag C. The remaining components in the mother bag C can be mixed with the newly added liquid by flipping the tray 410. After the mixing operation, the tray 410 can be rotated back to the first position, which makes it easy to remove the mother bag C for storage, or to continue squeezing the mother bag C to dispense the mixed blood components into other blood bags, or to vent the mother bag C. There is no need for multiple manual operations to pick up and put down the mother bag C. The mother bag C can be squeezed and separated, injected with liquid, mixed, and squeezed again to dispense or vent the air online, ensuring the continuity of operation. This not only improves the processing efficiency, but also reduces the adverse effects of problems such as mounting position errors and differences in mixing effect caused by manual intervention on the separation effect.

[0061] Therefore, by optimizing the collaborative work of each mechanism, the blood component separator of this application embodiment significantly improves the ease of operation and work efficiency while ensuring the separation effect. The integrated mixing mechanism 400 performs liquid tumbling, avoiding frequent manual bag removal and hanging, reducing operational errors, and effectively improving processing speed and consistency.

[0062] refer to Figure 3In some embodiments, a plurality of sensors 500 are arranged at vertical intervals on the outer side of the fixed plate 110. The detection end of the sensor 500 faces the moving plate 310, and the sensor 500 is used to detect the layering of blood components in the mother bag C. The layering position can be detected by a photoelectric sensor. Different colored objects have different light transmittance. The photoelectric sensor can sense the target by detecting the light value of the reflected light. For example, after the blood in the mother bag C is separated by centrifugation, different blood components are layered. Different blood components have different colors and different light transmittances. For example, plasma and red blood cells are layered and have different light transmittances. Therefore, the photoelectric sensor can determine the blood components by detecting the light value of the reflected light, thereby detecting the layering position. The tray 410 is provided with a first clearance opening 411 that runs through both sides of the tray 410. When the tray 410 is in the first position, the first clearance opening 411 corresponds to the sensor 500, that is, the first clearance opening 411 is located in front of the sensor 500 to form a clearance between the sensor 500 and the mother bag C. During the compression process, the mother bag C adheres to the surface of the tray 410. The sensor 500 is used to detect the layering of the remaining blood components in the blood bag through the first clearance opening 411.

[0063] refer to Figures 1 to 3 Taking the mother bag C as an example, which is divided into upper and lower layers, during the compression process of the mother bag C, the upper layer is squeezed out from the connecting tube above the mother bag C. As the compression proceeds, the internal volume of the mother bag C is compressed, so the separation of the lower and upper layers gradually moves upward. Therefore, it can be detected by some of the multiple sensors 500 that are spaced apart in the vertical direction. When the separation of the layers is detected by the sensor 500 corresponding to the top position of the inner cavity of the mother bag C or slightly below the top, it can be confirmed that the upper layer has been basically separated. Then the movement of the moving plate 310 can be stopped to stop the compression, avoid mixing in the lower layer, and ensure the separation effect. Alternatively, a connecting tube can be connected to the bottom of the mother bag C to draw out the lower layer components during the extrusion process. As the extrusion proceeds, the internal volume of the mother bag C is compressed, and the separation layers of the lower and upper components gradually move downwards. As a result, some of these layers can be detected by multiple sensors 500 spaced apart in the vertical direction. When the separation layers are detected by a sensor 500 located at or slightly above the bottom of the inner cavity of the mother bag C, it can be confirmed that the lower layer components have been basically separated. At this point, the movement of the moving plate 310 can be stopped to stop the extrusion, thus preventing the upper layer components from mixing in and ensuring the separation effect.

[0064] By precisely controlling the displacement of the moving plate 310 and the real-time monitoring of the sensor 500, which is set at intervals along the vertical direction, the movement of the layers is detected in a timely manner, avoiding the mixing of lower layer components, making the separation process more efficient and accurate.

[0065] refer to Figure 3In some embodiments, the fixing plate 110 serves as one side wall of the main body 100. The fixing plate 110 has a receiving groove 112 for accommodating the sensor 500. The sensor 500 is accommodated in the receiving groove 112 and fixedly connected to the fixing plate 110. The sensor 500 can be connected to the fixing plate 110 by common fixing methods such as adhesive, screw connection, and snap-fit, or the sensor 500 and the fixing plate 110 can be formed into an integral structure.

[0066] Or, refer to Figure 2 , Figure 3 and Figure 5 In other embodiments, the main body 100 includes a chassis 120, a fixing plate 110 fixed to one side of the chassis 120, and a sensor 500 disposed on the side of the chassis 120 facing the fixing plate 110. The fixing plate 110 is provided with a second clearance opening 111 corresponding to the position of the sensor 500, for the purpose of avoiding the sensor 500. When the tray 410 is in the first position, the first clearance opening 411 and the second clearance opening 111 correspond to the sensor 500, that is, the second clearance opening 111 is located in front of the sensor 500, and the first clearance opening 411 is located in front of the second clearance opening 111, so as to form a clearance between the sensor 500 and the mother bag C. During the compression process, the mother bag C adheres to the surface of the tray 410. The sensor 500 is used to detect the layering of the remaining blood components in the blood bag through the first clearance opening 411 and the second clearance opening 111.

[0067] refer to Figures 1 to 3 In some embodiments, the tray 410 has a first compression surface 412 and a second compression surface 413. When the tray 410 is in a first position: the first compression surface 412 abuts against the fixed plate 110. During compression, the fixed plate 110 abuts against the first compression surface 412, ensuring that the mother bag C of the tray 410 remains stable during compression, thus preventing shaking from affecting the compression separation effect. The second compression surface 413 faces the moving plate 310 and abuts against one side of the outer wall of the blood bag. It is arranged parallel to the moving plate 310. During compression, one side of the mother bag C is against the second compression surface 413, and the moving plate 310 is against the other side of the mother bag C, ensuring that the blood bag is subjected to uniform force during compression and ensuring the separation effect.

[0068] refer to Figure 2 and Figure 4In some embodiments, when the tray 410 is in the second position, there is an angle α between the second extrusion surface 413 and the fixing plate 110, and the angle α is an obtuse angle. When the tray 410 rotates from the first position to the second position, it can lift the mother bag C hanging on the hanging mechanism 200, so that the bottom of the mother bag C flips upward to a position higher than the suspension position. As a result, the liquid in the mother bag C and the components that have settled at the bottom are redistributed under the action of gravity, driving the tray 410 to rotate back and forth between the first position and the second position, so as to achieve the mixing of the contents of the mother bag C. There is no need to manually pick up and put down the mother bag C, which is beneficial to improving the operation efficiency. Furthermore, by reasonably configuring the rotation speed and angle of the tray 410, the mixing efficiency and consistency can be effectively guaranteed.

[0069] The included angle α can range from 120° to 170°, for example, it can be 120°, 125°, 130°, 135°, 140°, 145°, 150°, 155°, 160°, 165°, 170° or any other value between 120° and 170°. In some examples, an included angle α of 160° is preferred, which allows the tray 410 to repeatedly rotate between 0° and 160°, causing the liquid inside the mother bag C to mix up and down. The specific selection of the included angle is determined based on the separation effect and the equipment structure, ensuring smooth liquid flow during the mixing process, reducing residue at the bottom of the mother bag C, ensuring uniform mixing of components, and improving separation efficiency.

[0070] refer to Figure 3 and Figure 5 In some embodiments, the upper end of the tray 410 is provided with a notch 414, which corresponds to the position of the hanging mechanism 200. The notch 414 is used to avoid the hanging mechanism 200 during the flipping of the tray 410. At the same time, it provides deformation space for the adaptive deformation of the hanging position of the mother bag C during the flipping of the tray 410, effectively avoiding problems such as squeezing and jamming of the hanging position of the mother bag C between the hanging mechanism 200 and the tray 410, and reducing damage to the hanging position of the mother bag C.

[0071] refer to Figure 3 and Figure 5In some embodiments, the notch 414 on the tray 410 is located above the first clearance opening 411. When the tray 410 is in the first position, the notch 414 at the upper end of the tray 410 corresponds to the upper area of ​​the fixing plate 110, thereby avoiding the sensors 500 distributed in that area. During the separation process, when the separated layers of blood components rise to the area corresponding to the notch 414, the sensors 500 can detect the remaining separated layers of blood components in the blood bag through the notch 414. In the case of the second clearance opening 111 of the fixing plate 110, the notch 414 of the tray 410 is opposite to the upper part of the second clearance opening 111. During the compression process, the mother bag C adheres to the surface of the tray 410. When the separated layers of blood components rise to the area corresponding to the notch 414, the sensors 500 can detect the remaining separated layers of blood components in the blood bag through the notch 414 and the second clearance opening 111.

[0072] refer to Figures 3 to 5 In some embodiments, the mixing drive assembly 420 includes a mixing motor 421 and a transmission device 422. The mixing motor 421 is fixed to the main body 100, and the transmission device 422 connects the output end of the mixing motor 421 to the tray 410. The mixing motor 421 drives the tray 410 to rotate through the transmission device 422, thereby controlling the rotation angle and frequency of the tray 410. Through the precise control of the mixing motor 421, the tray 410 can be flipped at a preset angle and frequency, thereby achieving uniform mixing of the liquid inside the mother bag C.

[0073] The transmission device 422 can connect the output end of the mixing motor 421 and the tray 410 in various forms such as gear transmission, synchronous belt transmission, or chain transmission, so that the mixing motor 421 can precisely control the flipping angle and frequency of the tray 410 through the transmission device 422. The tray 410 can be connected to a rotating shaft 423, which is rotatably connected to the main body 100. The rotating shaft 423 is directly connected to the output end of the mixing motor 421 or connected to the output end of the mixing motor 421 through a transmission device 422 such as a synchronous belt mechanism. The tray 410 is fixedly connected to the rotating shaft 423. The mixing motor 421 drives the rotating shaft 423 to rotate, which can drive the tray 410 to flip, ensuring that the flipping action is smooth and precise.

[0074] In some embodiments, the main body 100 may have a clearance position on the side of the fixed plate 110 and the mounting mechanism 200. The mixing mechanism 400 may also include a transfer mechanism, which includes a transfer motor and a carrier. The transfer motor is fixed to the clearance position of the main body 100. The carrier is movably connected to the main body 100, and the mixing motor 421 is fixed to the carrier to position the tray 410 in the clearance position. The transfer motor drives the carrier to move, which can move the tray 410 between the clearance position and a predetermined position between the moving plate 310 and the fixed plate 110, thereby moving in and out between the moving plate 310 and the fixed plate 110. When the transfer motor drives the carrier to move the pallet 410 from the clearance position to the predetermined position between the fixed plates 110, the pallet 410 can be flipped between the first position and the second position by the mixing motor 421; the pallet 410 is moved out of the predetermined position by the transfer motor driving the carrier to move, that is, moved out from between the moving plate 310 and the fixed plate 110 to the clearance position, so as to avoid the moving plate 310 and the mother bag C.

[0075] In use, after the mother bag C is squeezed and separated once, during the liquid injection process, the transfer motor drives the carrier to move the tray 410 from the clearance position to the predetermined position between the moving plate 310 and the fixed plate 110. The moving plate 310 retracts, and then the mixing motor 421 drives the tray 410 to flip between the first position and the second position, so that the mother bag C is mixed. After the mixing is completed, the transfer motor drives the carrier to move again, moving the tray 410 from the predetermined position between the moving plate 310 and the fixed plate 110 to the clearance position, ensuring that the tray 410 is successfully reset, and then the next squeezing and separation operation is performed, and the mother bag C is squeezed between the fixed plate 110 and the moving plate 310.

[0076] refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the mounting mechanism 200 may include a connector 210, a pin assembly 220, and a linkage assembly 230.

[0077] The connector 210 is movably connected to the main body 100 along a first direction. A first inclined surface 211 is provided on one side of the connector 210, which slopes forward and downward along the first direction. An abutment portion 212 is provided on the rear side of the first inclined surface 211. A needle-hanging assembly 220 is connected to the connector 210 and extends forward along the first direction. The needle-hanging assembly 220 is located above the fixing plate 110 and is used to hang blood bags. A linkage assembly 230 is connected to the compression drive assembly 320 and the connector 210. The linkage assembly 230 is driven by the compression drive assembly 320 and moves with the movement of the moving plate 310.

[0078] Specifically, when the moving plate 310 is in the initial position A, the linkage component 230 abuts against the first inclined surface 211 to restrict the rearward movement of the connecting piece 210; when the moving plate 310 moves in front of the initial position A, the linkage component 230 remains abutting against the first inclined surface 211; when the moving plate 310 moves backward behind the initial position A, the linkage component 230 abuts against the abutment part 212 at a set position to drive the connecting piece 210 to move backward. Thus, by linking the movements of the needle-hanging assembly 220 and the moving plate 310, the movement of the blood bag can be effectively ensured to maintain a suitable suspension state during the separation process, avoiding problems such as the mother bag C detaching from the needle-hanging assembly 220 during the tray 410 flipping process due to improper positioning, and the mother bag C's improper position affecting the accuracy of the test.

[0079] The extrusion drive assembly 320 may include an extrusion motor 321, a timing belt mechanism 322, a drive shaft (not shown) and a drive member 324. The extrusion motor 321 drives the drive shaft 323 to rotate through the timing belt mechanism 322, thereby driving the drive member 324 to move. The drive shaft and the drive member 324 may be connected by threads to form a screw drive structure. The moving plate 310 and the follower 232 are connected to the drive member 324 and thus move under drive.

[0080] refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the connector 210 has a first inclined surface 211 on one side, the first inclined surface 211 is inclined forward and downward along a first direction, and the connector 210 has an abutment portion 212 on the rear side of the first inclined surface 211. When the moving plate 310 is in the initial position A, the linkage component 230 abuts against the first inclined surface 211 to restrict the rearward movement of the connector 210, thus fixing the positions of the connector 210 and the pin assembly 220. When the extrusion drive component 320 drives the moving plate 310 to move in front of the initial position A, the linkage component 230 remains abutting against the first inclined surface 211, thus fixing the positions of the connector 210 and the pin assembly 220. When the extrusion drive component 320 drives the moving plate 310 to move rearward from the initial position A, the linkage component 230 abuts against the abutment part 212 at a set position, thus driving the connector 210 to move rearward, causing the pin assembly 220 to move rearward accordingly. When the extrusion drive component 320 drives the moving plate 310 to move forward from the rear of the initial position A, the linkage component 230 abuts against the first inclined surface 211, thus driving the connector 210 to move forward, causing the pin assembly 220 to move back to its original position. This enables the pin-hanging assembly 220 to perform multiple actions as the follower 232 moves, including maintaining a fixed position, adjusting backward, and returning to its original position. The linkage assembly 230's contact with the first inclined surface 211 ensures the stability of the pin-hanging assembly 220. During the flipping of the tray 410, it also effectively ensures the stability of the mother bag C, preventing it from detaching from the pin-hanging assembly 220.

[0081] refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the linkage component 230 may include a guide 231 and a follower 232. The guide 231 is disposed on the side of the connector 210 having a first inclined surface 211. The guide 231 is fixedly connected to the main body 100. The guide 231 has a first guide groove 2311 and a second guide groove 2312. The first guide groove 2311 is in the same inclination direction as the first inclined surface 211. The second guide groove 2312 communicates with the first guide groove 2311 and extends rearward along a first direction. The follower 232 is disposed between the guide 231 and the connector 210. The follower 232 is movably connected to the extrusion drive component 320 in a vertical direction. The extrusion drive component 320 drives the follower 232 to move along the first guide groove 2311 to have a first stroke 232a and along the second guide groove 2312 to have a second stroke 232b.

[0082] In this configuration, the movable plate 310 is located at the initial position A, and the upper end of the follower 232 abuts against the first inclined surface 211 to restrict the rearward movement of the connector 210. The extrusion drive assembly 320 drives the movable plate 310 to move in front of the initial position A while simultaneously driving the follower 232 to move along the first stroke 232a. The follower 232 abuts against the first inclined surface 211 and slides along the first inclined surface 211 during the first stroke 232a to restrict the front-rear position of the connector 210. The extrusion drive assembly 320 drives the movable plate 310 to move behind the initial position A while simultaneously driving the follower 232 to move along the second stroke 232b. When the follower 232 moves backward at the set position of the second stroke 232b, it abuts against the abutment part 212 to drive the connector 210 to move backward. Therefore, when the squeezing drive assembly 320 drives the moving plate 310 to move, the follower 232 moves accordingly, causing the needle attachment assembly 220 to perform actions such as maintaining a fixed position, adjusting backward, and returning to its original position. Thus, the stroke of the follower 232 can be linked with the movement of the moving plate 310, ensuring that the needle attachment assembly 220 adaptively adjusts its position, guaranteeing convenient blood bag mounting and accurate blood component separation.

[0083] While the moving plate 310 moves backward from its initial position A to squeeze the mother bag C, the follower 232 moves backward in the second stroke 232b to push the connector 210 and the hanging needle assembly 220 backward. On the one hand, this ensures that the mother bag C and the hanging needle assembly 220 move backward adaptively as the squeezing proceeds, and that the force is evenly distributed during the separation process. On the other hand, it ensures that the rear side of the mother bag C remains in contact with the fixing plate 110 and the sensor 500, ensuring that the sensor 500 accurately detects the blood layer separation, thereby ensuring the continuity and accuracy of the separation process.

[0084] refer to Figure 1 , Figure 6and Figure 7 In some embodiments of the mounting mechanism 200, the guide member 231 may be provided with a guide groove to restrict or guide the movement of the follower member 232. For example, the guide member 231 is provided with a first guide groove 2311 and a second guide groove 2312. The first guide groove 2311 is used to guide the follower member 232 to slide in the first stroke 232a, and the second guide groove 2312 is used to guide the follower member 232 to move in the second stroke 232b. The first guide groove 2311 is in the same direction of inclination as the first inclined surface 211, and the second guide groove 2312 is connected to the first guide groove 2311 and extends rearward along the first direction. The follower member 232 moves along the first guide groove 2311 in the first stroke 232a and moves along the second guide groove 2312 in the second stroke 232b.

[0085] During operation, when the follower 232 slides along the first guide groove 2311, its movement trajectory is constrained by the groove shape, ensuring close contact with the first inclined surface 211. When the follower 232 moves along the second guide groove 2312, the groove design allows it to accurately avoid contact with the first inclined surface 211, and during its backward movement, it can abut against the abutment part 212 at a set position, driving the pin assembly 220 to move backward. This achieves smooth backward movement of the connector 210 and the pin assembly 220, avoiding interference with the backward movement of the pin assembly 220. Furthermore, during the follower 232's forward movement along the second guide groove 2312 from the rear end, after contacting the first inclined surface 211 again, it can drive the connector 210 and the pin assembly 220 to move forward back to the original position B. This ensures that the follower 232 can accurately abut against the corresponding parts in both strokes, further optimizing the stability and adjustment accuracy of the pin assembly 220.

[0086] The upper end of the follower 232 may be provided with a second inclined surface 2321, which is parallel to the first inclined surface 211, thereby forming a structure that fits against the first inclined surface 211. During the first stroke 232a, the second inclined surface 2321 contacts the first inclined surface 211 and remains in contact. Thus, through the interaction of the parallel inclined surfaces, the follower 232 has a stable forward component force on the abutment of the connector 210, which improves the positional stability of the hanging pin assembly 220 and can effectively ensure the positional stability of the mother bag C during the flipping process of the tray 410.

[0087] refer to Figure 1 , Figure 6 and Figure 7In some embodiments, the follower 232 has a guide portion 2322 on the side facing the guide 231. The guide portion 2322 can slide or roll along the first guide groove 2311 and the second guide groove 2312. For example, the guide portion 2322 can be designed as a boss protruding from the side of the follower 232 facing the guide 231, which fits against the inner wall of the guide groove (i.e., the first guide groove 2311 and the second guide groove 2312). The boss can be cylindrical, elliptical cylindrical, or prismatic. Alternatively, the guide portion 2322 can also be designed as a roller adapted to the inner wall of the guide groove. Correspondingly, the follower 232 is provided with a connecting shaft for mounting the roller. The roller rolls in the first guide groove 2311 and the second guide groove 2312, which can reduce frictional resistance, ensure that the follower 232 moves flexibly, and reduce jamming.

[0088] refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the follower 232 has a sliding portion on the side opposite to the guide 231. The sliding portion extends in the vertical direction, and the follower 232 can be driven to move in the vertical direction relative to the guide 231 through the sliding portion. Therefore, when the follower 232 moves forward in the first stroke 232a, the top of the follower 232 abuts against the first inclined surface 211, and the first inclined surface 211 exerts a downward reaction force on the follower 232. This reaction force causes the follower 232 to move forward along the first inclined surface 211 while moving downward relative to the guide 231 through the sliding part, thereby ensuring stable contact with the first inclined surface 211. During the process of the follower 232 moving backward in the first stroke 232a, the first guide groove 2311 exerts an upward supporting force on the follower 232, causing the follower 232 to move backward along the first inclined surface 211 while moving upward relative to the guide 231 through the sliding part, ensuring continuous and stable contact with the first inclined surface 211, so as to maintain a suitable mounting position during the liquid injection process of the mother bag C and the mixing process of the tray 410.

[0089] The sliding part may include a matching slider and slide rail structure, one of which is connected to the follower 232, and the other is adapted to be connected to the extrusion drive assembly 320 for driving the moving plate 310 to move. The slide rail has a track extending in the vertical direction. The slider is closely matched with the slide rail to ensure smooth movement of the sliding part in the vertical direction. The extrusion drive assembly 320 drives the moving plate 310 and the sliding part to move in the first direction so that the follower 232 moves together with the moving plate 310.

[0090] Follower 232 moves backward in the first stroke 232a into the second stroke 232b and disengages from the first inclined surface 211. Then it continues to move backward until it abuts against the abutment part 212 and moves the abutment part 212 backward together, so that the connector 210 and the hanging pin assembly 220 move backward smoothly. In the second stroke 232b, follower 232 moves along the second guide groove 2312. The second guide groove 2312 limits the movement trajectory of follower 232 to move along the first direction, so that it will not move up and down due to the sliding part, ensuring that follower 232 moves smoothly in the second stroke 232b.

[0091] refer to Figure 6 and Figure 7 In some embodiments, the first inclined surface 211 of the connector 210 is located within the range of the second stroke 232b, that is, the first inclined surface 211 is located above the second guide groove 2312. Alternatively, as the follower 232 moves backward in the second stroke 232b, causing the abutment portion 212 to move backward, it moves a portion of the first inclined surface 211 above the second guide groove 2312. Therefore, after the follower 232 moves forward a certain distance at the rear end of the second stroke 232b, it can re-abut against the first inclined surface 211, thereby pushing the connector 210 and the pin assembly 220 to move smoothly forward in the first direction until fully reset. During this process, the follower 232 cooperates with the second guide groove 2312 so as not to slide downward, ensuring that the connector 210 and the pin assembly 220 remain stable during the reset process.

[0092] In addition, refer to Figure 1 , Figure 6 and Figure 7 During the process of the follower 232 re-applying to the first inclined surface 211 and pushing the connector 210 and the hanging needle assembly 220 to reset, the reaction force of the first inclined surface 211 on the follower 232 and the movement trajectory of the follower 232 in the second guide groove 2312 work together to enable the follower 232 to move and reset smoothly and accurately along the predetermined path, thereby resetting the hanging needle assembly 220 so as to maintain a suitable hanging position during the liquid injection process of the mother bag C and the mixing process of the tray 410.

[0093] refer to Figure 1 , Figure 6 and Figure 7In some embodiments, the squeezing mechanism 300 further includes another fixed plate disposed opposite to the front side of the movable plate 310 along a first direction. For ease of distinction, the fixed plate 110 located on the rear side of the movable plate 310 is defined as the first fixed plate 330, and the fixed plate located on the front side of the movable plate 310 is defined as the second fixed plate 340. The first fixed plate 330 and the second fixed plate 340 are connected to the main body 100. The needle hanging assembly 220 is located above the first fixed plate 330 and is used to hang the mother bag C after blood centrifugation on the front side of the first fixed plate 330 and to hang the daughter bag on the rear side of the second fixed plate 340. The movable plate 310 can move forward from the initial position A to move toward the daughter bag to squeeze the daughter bag, and the movable plate 310 can move backward from the initial position A to move toward the mother bag C to squeeze the mother bag C, ensuring that blood components are separated as needed.

[0094] refer to Figure 1 , Figure 2 , Figure 6 and Figure 7 In some embodiments of the blood component separator, the mounting mechanism 200 suspends a mother bag C behind the moving plate 310 and another blood bag (e.g., a daughter bag) in front of the moving plate 310. The mounting mechanism 200 can be connected to the compression drive assembly 320 via the follower 232, thereby linking with the moving plate 310. The compression drive assembly 320 controls the displacement of the moving plate 310 through preset stroke parameters, thereby synchronously adjusting the position of the follower 232, and thus adjusting the state and position of the needle assembly 220, for example:

[0095] When the moving plate 310 is in the initial position A, the hanging pin assembly 220 is located at the origin position B. At this time, the follower 232 abuts against the first inclined surface 211 of the connector 210, so that the hanging pin assembly 220 maintains a stable position and cannot move backward, which facilitates hanging the mother bag C.

[0096] During the process of the moving plate 310 squeezing the front blood bag forward and returning to the initial position A after squeezing, the follower 232 remains in the first stroke 232a, thus maintaining contact with the first inclined surface 211, and the needle hanging assembly 220 maintains a stable position, so that the mother bag C suspended on the needle hanging assembly 220 maintains a stable position.

[0097] During the process of the moving plate 310 pressing the mother bag C (located behind the moving plate 310) suspended on the needle assembly 220 from the initial position A backward, the follower 232 moves in the second stroke 232b and abuts against the abutting part 212 of the connector 210 at a set position (e.g., when the moving plate 310 starts to move backward or after moving backward a certain distance, which can be set according to the program settings) and drives the connector 210 to move backward, so that the needle assembly 220 adaptively retracts, thereby ensuring that the mother bag C remains close to the abutting surface located behind the mother bag C during the pressing process. The abutting surface is provided with a sensor for detecting the height of the remaining blood components in the mother bag C. Keeping the mother bag C close to the abutting surface during the pressing process can effectively improve the accuracy of detection, thereby ensuring the separation effect.

[0098] After the moving plate 310 completes the compression of the mother bag C and moves forward to the initial position A, the follower 232 moves forward and abuts against the first inclined surface 211, driving the connector 210 and the needle hanging assembly 220 to move forward back to the original position B. At this time, the follower 232 remains abutting against the first inclined surface 211 to ensure that the position of the needle hanging assembly 220 is stable, which facilitates the re-injection of liquid.

[0099] After injection and before mixing the contents of the mother bag C, it is necessary to ensure that the moving plate 310 is outside the rotation range of the tray 410. For example, if the moving plate 310 is in its initial position A and can avoid the tray 410 from rotating, then there is no need to move the moving plate 310. If it needs to be moved, the moving plate 310 is adjusted to a safe position by the compression drive assembly 320 to ensure that the tray 410 is not obstructed when rotating. Then, the mixing motor drives the tray 410 to rotate and mix the contents of the mother bag C. After mixing, the mother bag C can be compressed again by the moving plate 310.

[0100] Therefore, the blood component separator of this application uses a mounting mechanism 200, which can not only be used to suspend the mother bag C in the blood component separator, but also can be linked with the moving plate 310 of the blood component separator through the follower 232. The linkage design enables the moving plate 310 to achieve stable mounting and adaptive position adjustment of the hanging needle assembly 220 when performing different operations, ensuring the stability of the mother bag C suspension and effectively improving the efficiency and accuracy of blood component separation.

[0101] refer to Figure 1 , Figure 2 and Figure 6In some embodiments, the blood component separator further includes a stopper-opening mechanism 600, which includes stopper-opening rods 610 spaced apart and a rotating mechanism 620. The rotating mechanism 620 is connected to the main body 100 and is used to drive the stopper-opening rods 610 to rotate. After the mother bag C is suspended by the mounting mechanism 200, the connecting plug of the mother bag C can be located between the two stopper-opening rods of the stopper-opening mechanism 600. The stopper-opening mechanism 600 can rotate the stopper-opening rods to open the connecting plug of the mother bag C, so that the inner cavity of the mother bag C is connected to the pipeline.

[0102] Furthermore, by precisely controlling the displacement of the moving plate 310 and the real-time monitoring of the sensor 500, the separation process is more efficient and accurate. While the moving plate 310 moves backward from its initial position A to compress the mother bag C, the follower 232 moves backward in the second stroke 232b, pushing the connector 210 and the hanging needle assembly 220 backward. This ensures that the mother bag C and the hanging needle assembly 220 adaptively move backward as the compression proceeds, resulting in uniform force during separation. It also ensures that the rear side of the mother bag C remains in contact with the first fixing plate 330 and the sensor 500, guaranteeing that the sensor 500 accurately detects the blood layer separation, thus ensuring the continuity and accuracy of the separation process.

[0103] refer to Figure 1 and Figure 2 In some embodiments, the main body 100 is provided with a control module and a detection module. The detection module is used to detect at least one of the operating states of the extrusion mechanism 300, the mounting mechanism 200, and the mixing mechanism 400. The control module is communicatively connected to the extrusion mechanism 300 and the mixing mechanism 400. The control module is used to control the start and stop of the extrusion mechanism 300 and the mixing mechanism 400 according to the data from the detection module.

[0104] The detection module may include multiple sensors distributed in various locations, such as position sensors and angle sensors, to detect whether the actuators in each mechanism are in the positions planned in the preset program, and to help confirm the operating status of each mechanism. For example, the detection module can monitor the position of the moving plate 310 in the squeezing mechanism 300 through the position sensor. When the detection module detects an abnormal position of the moving plate 310, the control module can stop the operation and then output an error message or alarm. The detection module can also detect the position of the needle assembly 220 through the position sensor to ensure that the mother bag C always maintains the correct position during the separation process, avoiding the separation effect due to position deviation. The detection module can also monitor whether the tray 410 is in the predetermined position through the position sensor, and detect the flipping angle and number of times of the tray 410 through the angle sensor and counter, so that the operating status of the mixing mechanism 400 is monitored, ensuring that the mixing operation achieves the expected effect, thereby ensuring the accuracy and efficiency of blood component separation.

[0105] In industrial automation equipment, monitoring the operating status of motion mechanisms through sensors and controlling the start and stop of motion mechanisms by control modules based on whether the operating status conforms to a preset program plan are widely used methods in this field. The specific control principles and methods are not detailed here. The controller can be implemented using a microcontroller, PLC, or other controllers. Through preset program logic, the blood component separator of this embodiment can fulfill various action requirements for the squeezing mechanism 300, the mounting mechanism 200, and the mixing mechanism 400.

[0106] refer to Figure 1 and Figure 2 The control module of the blood component separator is also used to control the tray 410 to be in the first position so that the centrifuged blood mother bag C can be hung on the hanging mechanism 200.

[0107] The control squeezing drive assembly 320 moves the moving plate 310 toward the tray 410 and squeezes the mother bag C, squeezing the first blood component in the mother bag C into the first dispensing bag D connected to the mother bag C, thus blocking the passage between the first dispensing bag D and the mother bag C.

[0108] The control panel 310 moves to the avoidance position, injects maintenance fluid into the mother bag C, and drives the tray 410 to rotate multiple times at a preset angle and frequency through the mixing drive component 420, so that the tray 410 is in the first position.

[0109] Thus, the squeezing mechanism 300 and the mixing mechanism 400 achieve squeezing separation and online mixing after injection, eliminating the need for additional manual mixing and facilitating efficient and accurate separation of blood components.

[0110] In some embodiments, after the mixing operation, the tray 410 is positioned in a first position, and then the connecting pipe connected to the mother bag C is closed, and the mother bag C is removed from the hanging needle assembly 220.

[0111] In other embodiments, after the mixing operation, the mother bag C can be subjected to a secondary compression to dispense the mixed blood components or to vent the mother bag C. For example, after the mixing operation, the tray 410 is positioned in the first position, and the compression drive assembly 320 moves the moving plate 310 toward the tray 410 and compresses the mother bag C, squeezing part of the mixed blood components in the mother bag C into the second dispensing bag E, which is connected to the mother bag C, for dispensing. Alternatively, after the mixing operation, the tray 410 is positioned in the first position, and the compression drive assembly 320 moves the moving plate 310 toward the tray 410 and compresses the mother bag C to expel excess air from the mother bag C.

[0112] refer to Figures 1 to 8 In some embodiments, a quadruple blood bag is used as an example:

[0113] The quadruple blood bag may include a mother bag C and three daughter bags connected to the mother bag C. The three daughter bags are connected to a collection tube via tubing, and the collection tube is connected to the mother bag C. The three daughter bags include a first dispensing bag D, a second dispensing bag E, and a maintenance solution bag F. By controlling the forward and backward movement of the moving plate 310, precise separation of different blood components within the mother bag C is achieved.

[0114] During the first stage of compression, the moving plate 310 moves backward to compress the mother bag C, squeezing the first blood component (such as plasma) into the first dispensing bag D. Then, the passage between the first dispensing bag D and the mother bag C is cut off. The connecting pipe between the first dispensing bag D and the mother bag C can be pressed together by the heat-sealing head 700. Afterward, the moving plate 310 retracts to a clearance position, making room for the subsequent injection and mixing operations.

[0115] During the injection phase, maintenance fluid is injected from the maintenance fluid bag F into the mother bag C. The maintenance fluid bag F can be mounted on the second fixed plate 340 on the front side of the moving plate 310. The moving plate 310 moves forward to squeeze the maintenance fluid bag F into the mother bag C. Alternatively, the maintenance fluid bag F can be mounted at other positions on the main body 100, and the fluid can be injected into the mother bag C by other squeezing plates (e.g., Figure 3 The top extrusion plate 350 (illustrated) squeezes the maintenance fluid bag F to inject fluid into the mother bag C; after injection, the passage between the second dispensing bag E and the mother bag C can be cut off, and the connecting pipe between the second dispensing bag E and the mother bag C can be pressed together by the hot melt pressure head 700 to prevent the second blood component of the subsequent secondary dispensing from entering the maintenance fluid bag F.

[0116] During the mixing stage, the mother bag C after the injection is completed is mixed. The mixing drive component 420 drives the tray 410 to the first position and rotates it multiple times at a preset angle and frequency to fully mix the maintenance solution with the remaining blood components (such as red blood cells) in the mother bag C. Then the tray 410 is returned to the first position to prepare for the next stage of squeezing and bagging.

[0117] During the second stage of squeezing, the moving plate 310 moves backward again to squeeze the mother bag C, squeezing the second blood component (such as red blood cells) into the second dispensing bag E.

[0118] Therefore, the blood component separator of this application realizes online mixing after injection without additional manual operation, which is conducive to efficient and accurate separation of blood components.

[0119] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified.

Claims

1. A blood component separator, characterized in that, include: The main body has a fixing plate on one side; An extrusion mechanism includes a movable plate and an extrusion drive assembly. The movable plate is disposed opposite to the fixed plate. The extrusion drive assembly is connected to the main body and the movable plate and is used to drive the movable plate to move closer to or away from the fixed plate. Mounting mechanism, connected to the main body; A mixing mechanism includes a tray and a mixing drive assembly connected to the main body and the tray, for driving the tray to rotate between a first position and a second position; in the first position, the tray is located between the moving plate and the fixed plate and below the mounting mechanism, the mounting mechanism being at least partially located on the side of the tray facing away from the fixed plate, for suspending blood bags; in the second position, the tray is at least partially rotated to a position higher than the mounting mechanism, so that the bottom of the blood bag is flipped over to above the suspension position.

2. The blood component separator according to claim 1, characterized in that, Multiple sensors are arranged at vertical intervals on the outer side of the fixing plate; The tray is provided with a first clearance opening that runs through both sides of the tray. When the tray is in the first position, the first clearance opening corresponds to the sensor. The sensor is used to detect the layering of the remaining blood components in the blood bag through the first clearance opening.

3. The blood component separator according to claim 2, characterized in that, The main body includes a chassis, the fixing plate is fixed to one side of the chassis, and the sensor is disposed on the side of the chassis facing the fixing plate; the fixing plate is provided with a second clearance corresponding to the position of the sensor for avoiding the sensor; Alternatively, the fixing plate serves as one side wall of the main body, and the fixing plate has a receiving groove for accommodating the sensor, which is housed in the receiving groove and fixedly connected to the fixing plate.

4. The blood component separator according to claim 1, characterized in that, The tray has opposing first and second compression surfaces; When the tray is in the first position: the first extrusion surface abuts against the fixed plate, and the second extrusion surface faces the moving plate, abutting against one side of the outer wall of the blood bag, and is arranged parallel to the moving plate.

5. The blood component separator according to claim 4, characterized in that, When the tray is in the second position, there is an angle between the second pressing surface and the fixing plate, and the angle is an obtuse angle.

6. The blood component separator according to claim 1, characterized in that, The upper end of the tray has a notch, which corresponds to the position of the mounting mechanism, and is used to avoid the mounting mechanism during the tray's flipping process.

7. The blood component separator according to claim 1, characterized in that, The mixing drive assembly includes a mixing motor and a transmission device. The mixing motor is fixed to the main body, and the transmission device connects the output end of the mixing motor to the tray. The mixing motor drives the tray to rotate through the transmission device to control the rotation angle and frequency of the tray.

8. The blood component separator according to claim 1, characterized in that, The mounting mechanism includes: A connector is movably connected to the main body along a first direction. A first inclined surface is provided on one side of the connector. The first inclined surface is forward and downward along the first direction. An abutment portion is provided on the rear side of the first inclined surface of the connector. A needle-hanging assembly is connected to the connector and extends forward along the first direction. The needle-hanging assembly is located above the fixing plate and is used to hang blood bags. A linkage component is connected to the extrusion drive component and the connector. The linkage component is driven by the extrusion drive component and moves with the movement of the moving plate. Specifically, when the movable plate is in the initial position, the linkage component abuts against the first inclined surface to restrict the rearward movement of the connector; when the movable plate moves in front of the initial position, the linkage component remains abutting against the first inclined surface; when the movable plate moves backward behind the initial position, the linkage component abuts against the abutting part at a set position to drive the connector to move backward.

9. The blood component separator according to any one of claims 1 to 8, characterized in that, The main body is equipped with a control module and a detection module. The detection module is used to detect at least one of the operating status of the extrusion mechanism, the operating status of the mounting mechanism, and the operating status of the mixing mechanism. The control module is communicatively connected to the extrusion mechanism and the mixing mechanism. The control module is used to control the start and stop of the extrusion mechanism and the mixing mechanism according to the data from the detection module.

10. The blood component separator according to claim 9, characterized in that, The control module is also used to control the tray to be in the first position so as to hang the centrifuged blood mother bag on the mounting mechanism; The squeezing drive assembly is controlled to move the moving plate toward the tray and squeeze the mother bag, squeezing the first blood component in the mother bag into the first dispensing bag connected to the mother bag, thereby cutting off the passage between the first dispensing bag and the mother bag; The moving plate is controlled to move to the avoidance position, the maintenance liquid is injected into the mother bag, and the mixing drive component is controlled to drive the tray to rotate multiple times at a preset angle and frequency, so that the tray is located in the first position.

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