A blood component separator

Abstract

This utility model discloses a blood component separator. The blood component separator includes a main unit housing, a drive mechanism, a drive shaft, and a tray. A through hole is provided on the side of the main unit housing, and the drive mechanism is housed inside the main unit housing. The drive shaft rotatably passes through the through hole, with one end of the drive shaft located inside the main unit housing and connected to the drive mechanism, and the other end located outside the main unit housing. The tray is located on the outer side of the main unit housing and is fixedly connected to the drive shaft. The drive mechanism drives the drive shaft to rotate, causing the tray to swing around the axis of the drive shaft. By providing a through hole on the side of the main unit housing, housing the drive mechanism inside the main unit housing, providing a rotatable drive shaft within the through hole, and mounting the tray on the drive shaft, the drive mechanism drives the drive shaft to rotate, thereby causing the tray to swing, achieving the technical purpose of shaking the mixed blood bag. This design effectively improves the integration of the separator, integrating the shaking function into the main unit housing.

Description

Technical Field

[0001] This utility model relates to the field of blood component separation technology, specifically to a blood component separator. Background Technology

[0002] Blood consists of plasma, platelets, and red blood cells. Before storage, red blood cells separated by a blood component separator need to be mixed evenly in a preservation solution bag to form a suspension, preventing clumping. Related technologies typically include manual or automatic mixing devices to mix the red blood cells and preservation solution in the blood bag to ensure blood quality and processing effectiveness. However, existing mixing devices are often separate, resulting in poor overall equipment integration. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a blood component separator that can improve the overall integration of the equipment.

[0004] A blood component separator according to an embodiment of the present invention includes a main unit housing, a drive mechanism, a drive shaft, and a tray. The side wall of the main unit housing includes an adjacent front and a side, with a through hole on the side. The drive mechanism is disposed within the main unit housing. The drive shaft rotatably passes through the through hole, with one end of the drive shaft located inside the main unit housing and connected to the drive mechanism, and the other end located outside the main unit housing. The tray is located on the outer side of the main unit housing and is used to hold blood bags. The tray is fixedly connected to the drive shaft, and the drive mechanism is used to drive the drive shaft to rotate, thereby causing the tray to swing around the axis of the drive shaft.

[0005] The blood component separator according to the embodiments of the present invention has at least the following beneficial effects: the existing shaking device usually has a base, a rotating mechanism, a tray and other components separately, and then places them next to the main unit box. The overall integration of the device is poor. The blood component separator of the present invention opens a through hole on the side of the main unit box and sets the drive mechanism inside the main unit box. A rotatable drive shaft is set in the through hole and the tray is installed on the drive shaft. The drive mechanism drives the drive shaft to rotate, thereby making the tray swing, achieving the technical purpose of shaking the mixed blood bag. This design effectively improves the integration of the separator and integrates the shaking function into the main unit box.

[0006] According to some embodiments of the present invention, the side has an inwardly recessed groove, the through hole communicates with the groove, and at least a portion of the tray is located within the groove.

[0007] According to some embodiments of the present invention, the side surface includes a first wall and a second wall connected to each other, the second wall being recessed into the interior of the main unit relative to the first wall, the groove being formed between the first wall and the second wall, and the through hole being provided in the second wall.

[0008] According to some embodiments of the present invention, the drive shaft is rotatably connected to the side, or a mounting base is fixedly provided inside the main unit housing, and the drive shaft is rotatably connected to the mounting base.

[0009] According to some embodiments of the present invention, the drive shaft includes a first section and a second section that are detachably connected. The first section is connected to the drive mechanism, and the second section is located outside the main unit and is fixedly connected to the tray.

[0010] According to some embodiments of the present invention, the driving mechanism includes a driving member, a transmission member, and a transmission rod. The transmission member includes a rotating part and a moving part. The central axis of the rotating part is a first axis, and the central axis of the driving shaft is a second axis. The driving shaft can rotate around the second axis. The rotating part can rotate relative to the moving part around the first axis. The first axis and the second axis are spaced apart and parallel to each other. One end of the transmission rod is fixedly connected to the driving shaft, and the other end of the transmission rod passes through the rotating part and can slide relative to the rotating part. The driving member is used to drive the moving part to move in the vertical direction, thereby causing the rotating part to drive the transmission rod to swing, so that the driving shaft rotates around the second axis.

[0011] According to some embodiments of the present invention, the driving mechanism further includes a driving wheel, a driven wheel, and a belt. The driving wheel and the driven wheel are spaced apart in the vertical direction and are connected to the belt for transmission. The moving part is fixedly connected to the belt. The driving member is used to drive the driving wheel to rotate, thereby causing the belt and the driven wheel to rotate, so that the moving part moves in the vertical direction.

[0012] According to some embodiments of the present invention, the driving mechanism further includes a support plate, the driving wheel and the driven wheel are rotatably mounted on the support plate, the support plate is provided with a guide groove in the vertical direction, and the moving part is slidably connected to the guide groove.

[0013] According to some embodiments of the present invention, the tray has a middle position, a first position, and a second position. The middle position is parallel to the horizontal plane. The first position and the second position are tilted in opposite directions relative to the middle position. The tilt angle between the first position and the second position and the middle position is α. The tray swings from any initial position through the middle position, the first position, and the second position and then returns to the initial position, which is considered one swing. The number of times the tray swings per minute is f, where -35°≤α≤35°, and / or 0≤f≤60.

[0014] According to some embodiments of the present invention, the blood component separator further includes a photoelectric sensor and a sensing plate. The sensing plate is fixedly connected to the drive shaft. When the drive shaft rotates, the sensing plate swings within the photoelectric sensor so that the photoelectric sensor detects the angle of the tray swing.

[0015] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a perspective view of a blood component separator according to one embodiment of the present invention;

[0018] Figure 2 This is a perspective view of the drive mechanism, drive shaft, and tray in one embodiment of the present invention;

[0019] Figure 3 This is a partial structural side view of one embodiment of the present invention when the tray is in the middle position;

[0020] Figure 4 This is a partial structural side view of the tray in a first position in one embodiment of the present invention;

[0021] Figure 5 This is a partial structural side view of the tray in the second position in one embodiment of the present invention;

[0022] Figure 6 for Figure 1 Enlarged view of region A in the middle;

[0023] Figure 7 This is a perspective view of the drive mechanism, drive shaft, and tray in the second embodiment of this utility model;

[0024] Figure 8This is a partial bottom view of the drive mechanism, drive shaft, and tray in the second embodiment of this utility model.

[0025] Reference numerals: Blood component separator 100, main unit housing 101, drive shaft 102, tray 103, side 104, groove 105, first wall 106, second wall 107, stopper mechanism 108, drive mechanism 200, anti-slip part 201, drive component 202, transmission component 203, transmission rod 204, rotating part 205, moving part 206, driven wheel 207, belt 208, mounting base 209, weighing sensor 210, first axis 211, second axis 212, hanging needle 213, drive wheel 301, first gripper 601, second gripper 602, first section 701, second section 702, support plate 703, guide groove 704, photoelectric sensor 801, sensing plate 802. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. 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.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] Blood consists of plasma, platelets, and red blood cells. Before storage, the red blood cells separated by the blood component separator 100 need to be mixed evenly with the preservation solution in a blood bag to prepare a suspension of red blood cells, preventing clumping. Therefore, related technologies typically include manual or automatic shaking devices to mix the red blood cells and preservation solution in the blood bag to ensure blood quality and processing effectiveness. However, existing shaking devices are often separate, resulting in poor overall equipment integration. This invention proposes a blood component separator 100 that improves the overall integration of the equipment.

[0032] refer to Figure 1 and Figure 2 A blood component separator 100 according to an embodiment of the present invention includes a main unit housing 101, a drive mechanism 200, a drive shaft 102, and a tray 103. The side wall of the main unit housing 101 includes an adjacent front and side surface 104. The side surface 104 has a through hole. The drive mechanism 200 is disposed inside the main unit housing 101. The drive shaft 102 is rotatably inserted through the through hole. One end of the drive shaft 102 is located inside the main unit housing 101 and connected to the drive mechanism 200, while the other end is located outside the main unit housing 101. The tray 103 is located outside the side surface 104 of the main unit housing 101. The tray 103 is used to hold blood bags. The tray 103 is fixedly connected to the drive shaft 102. The drive mechanism 200 is used to drive the drive shaft 102 to rotate, thereby causing the tray 103 to swing around the axis of the drive shaft 102. Existing shaking devices typically have separate components such as a base, a rotating mechanism, and a tray 103, which are then placed next to the main unit 101. The overall integration of the device is poor. The blood component separator 100 of this utility model opens a through hole on the side 104 of the main unit 101 and sets the drive mechanism 200 inside the main unit 101. A rotatable drive shaft 102 is set in the through hole, and the tray 103 is installed on the drive shaft 102. The drive mechanism 200 drives the drive shaft 102 to rotate, thereby causing the tray 103 to swing, achieving the technical purpose of shaking the mixed blood bag. This design effectively improves the integration of the separator, making the shaking function integrated into the main unit 101.

[0033] refer to Figure 1In some embodiments of this invention, the side surface 104 has an inwardly recessed groove 105, and a through hole connects to the groove 105. At least a portion of the tray 103 is located within the groove 105. This reduces the size of the tray 103 extending outward relative to the side surface 104 of the main unit housing 101, thereby reducing the overall space occupied by the device and improving space utilization.

[0034] refer to Figure 1 In some embodiments of this utility model, the side surface 104 includes a first wall 106 and a second wall 107 connected to each other. The second wall 107 is recessed into the interior of the main unit housing 101 relative to the first wall 106. A groove 105 is formed between the first wall 106 and the second wall 107, and a through hole is provided in the second wall 107. Figure 1 It is known that the second wall 107 is parallel to the outer surface of the side 104. This design allows the drive shaft 102 to extend directly from the through hole in the second wall 107, directly connect to the tray 103, and drive the tray 103 to swing, thus facilitating the internal structural design of the main unit 101. It should be noted that in some embodiments of this utility model, the through hole can be as follows: Figure 1 The groove 105 shown is located on the second wall 107, but it can also be located on the first wall 106. After the drive shaft 102 extends from the through hole, a steering mechanism is added to bend the drive shaft 102 towards the side 104. After bending, it can extend outward relative to the main unit 101 and connect to the tray 103. In some embodiments of this invention, the groove 105 is not limited to... Figure 1 The rectangle shown can be designed into various shapes such as circles and polygons according to usage requirements.

[0035] refer to Figure 1 and Figure 2 In some embodiments of this utility model, the drive shaft 102 is rotatably connected to the side 104, or the main unit housing 101 is fixedly provided with a mounting base 209, and the drive shaft 102 is rotatably connected to the mounting base 209. Figure 2 The scenario shown is the second type. In this embodiment, the drive shaft 102 is not directly connected to the main unit housing 101, but rather passes through the main unit housing 101 and connects to the mounting base 209 fixedly installed inside the main unit housing 101. In some embodiments, the first type can also be used, such as... Figure 1 The drive shaft 102 is directly rotatably mounted on the side 104. The specific fixing method of the drive shaft 102 can be selected and adjusted according to the size of the internal space of the main unit chassis 101, the layout of the internal structure, and the load-bearing capacity of the side wall of the main unit chassis 101. The drive shaft 102 directly passes through the main unit chassis 101 and is rotatably mounted to the internal mounting base 209, eliminating the need to adjust the installation positions of existing components within the main unit chassis 101, thus improving the flexibility of installation of various structures within the main unit chassis 101. Specifically, the drive mechanism 200 and the drive shaft 102 can be designed separately. Figure 2 The aforementioned integral component can be adaptively adjusted according to the internal structure of the main unit chassis 101, accommodating various types of main unit chassis 101. It only requires sufficient space within the main unit chassis 101 and a through hole of the same size as the drive shaft 102 on the side 104 of the main unit chassis 101, thus enhancing its adaptability. Furthermore, when the drive shaft 102 is rotatably connected to the mounting base 209, a bearing can be installed in the through hole. The outer circumferential surface of the bearing connects to the inner circumferential wall of the through hole, and the inner circumferential surface of the bearing connects to the drive shaft 102. This improves the stability of the drive shaft 102 when rotating relative to the main unit chassis 101.

[0036] refer to Figure 7 In some embodiments of this utility model, the drive shaft 102 includes a first segment 701 and a second segment 702 that are detachably connected. The first segment 701 is connected to the drive mechanism 200, and the second segment 702 is located outside the main unit housing 101 and is fixedly connected to the tray 103. This design facilitates the disassembly and replacement of the tray 103, makes it easier to transport after disassembly and assembly, and improves the flexibility of assembly, storage, and transportation of various components.

[0037] refer to Figures 2 to 5 In some embodiments of this utility model, the drive mechanism 200 includes a drive member 202, a transmission member 203, and a transmission rod 204. The transmission member 203 includes a rotating part 205 and a moving part 206. The central axis of the rotating part 205 is a first axis 211, and the central axis of the drive shaft 102 is a second axis 212. The drive shaft 102 can rotate around the second axis 212. The rotating part 205 can rotate relative to the moving part 206 around the first axis 211. The first axis 211 and the second axis 212 are spaced apart and parallel to each other. One end of the transmission rod 204 is fixedly connected to the drive shaft 102, and the other end of the transmission rod 204 passes through the rotating part 205 and can slide relative to the rotating part 205. The drive member 202 is used to drive the moving part 206 to move in the vertical direction, thereby causing the rotating part 205 to drive the transmission rod 204 to swing, so that the drive shaft 102 rotates around the second axis 212. The specific transmission process is as follows: The drive member 202 drives the moving part 206 to move in the vertical direction. Figures 3 to 5 As shown, the moving part 206 moves vertically, and a transmission rod 204 passes through the rotating part 205. One end of the transmission rod 204 is fixedly connected to the drive shaft 102. Therefore, when the moving part 206 moves vertically, the rotating part 205 rotates, and drives the drive shaft 102 to rotate via the transmission rod 204, thereby causing the tray 103 to swing. The first axis 211 and the second axis 212 are spaced apart and parallel to each other to improve the coordination between the drive shaft 102 and the rotating part 205. Furthermore, the drive member 202 can be as follows: Figure 2 The motor is shown, but in some embodiments it can also be configured as a piston mechanism, using the piston rod to drive the moving part 206 to move in the vertical direction.

[0038] refer to Figures 2 to 5 In some embodiments of this utility model, the drive mechanism 200 further includes a drive wheel 301, a driven wheel 207, and a belt 208. The drive wheel 301 and the driven wheel 207 are spaced apart in the vertical direction and are connected to the belt 208 for transmission. The moving part 206 is fixedly connected to the belt 208. The drive member 202 is used to drive the drive wheel 301 to rotate, thereby causing the belt 208 and the driven wheel 207 to rotate, so that the moving part 206 moves in the vertical direction. The belt 208 has a certain elasticity and can absorb vibration and impact, so the transmission process is relatively smooth and the noise during operation is low. Furthermore, the transmission structure composed of the drive wheel 301, the driven wheel 207, and the belt 208 is relatively simple, and installation and maintenance are relatively convenient. Moreover, the length of the belt 208 can be adjusted according to the space inside the main unit housing 101 to change the overall height of the drive mechanism 200, so as to adapt to the main unit housing 101 of different sizes. It should be noted that in some embodiments of this utility model, gear rack, sprocket and chain transmission methods can also be used. The rack or chain is set in the vertical direction and the moving part 206 is fixedly connected to it. Specifically, in some embodiments, a gear can be directly fixedly sleeved on the drive shaft 102. The motor drives the gear to rotate through the rack or chain, thereby realizing the swing of the tray 103. In this way, the transmission rod 204 and the transmission component 203 can be eliminated. However, this will increase the power requirement of the motor and fix the installation position of the motor. The transmission method of the transmission rod 204, the transmission component 203 and the belt 208 in this solution has the lever principle, so it can also reduce the power and size requirements of the drive component 202, and the installation position can be adjusted more flexibly.

[0039] refer to Figure 7 In some embodiments of this utility model, the drive mechanism 200 further includes a support plate 703, a drive wheel 301, and a driven wheel 207. Figure 7 Not shown in the middle, see Figure 3-5 The moving part 206 is rotatably mounted on the support plate 703, which has a guide groove 704 in the vertical direction. The moving part 206 is slidably connected to the guide groove 704. This design limits the horizontal offset of the moving part 206 during its vertical movement, thereby ensuring the belt 208 (… Figure 7 Not shown in the middle, see Figure 3-5 It can also move smoothly in the vertical direction, preventing the belt 208 from being pulled by the moving part 206 and deviating from the vertical state, thus improving the stability of the movement process. It should be noted that in some embodiments, a guide mechanism can also be directly set to limit the belt 208 in the horizontal direction and guide it in the vertical direction, thereby improving the movement stability of the belt 208 and the moving part 206.

[0040] refer to Figure 2 In some embodiments of this utility model, the tray 103 includes a main body connected to a drive shaft 102, the main body forming a placement space, and an anti-slip portion 201 provided on the main body. Alternatively, the tray 103 further includes an anti-slip element located within the placement space and laid on the main body, the anti-slip element being used to place blood bags, and the upper surface of the anti-slip element having the anti-slip portion 201. The design of the anti-slip portion 201 allows the blood bags to be stably placed in the tray 103 during shaking and to be thrown out, while the anti-slip portion 201 can... Figure 2 As shown, anti-slip properties can be achieved by directly creating raised and recessed horizontal grooves on the main body of the tray 103, or by additionally laying an anti-slip component inside the main body. The integrated design is simpler, while the split design facilitates the replacement of the anti-slip component, allowing for selection based on actual needs. The anti-slip part 201 can be raised and recessed grooves or made of anti-slip rubber pads or other materials.

[0041] refer to Figure 2 and Figure 3 In some embodiments of this invention, the blood component separator 100 further includes a weighing sensor 210, which is connected to a tray 103 and is used to detect the weight of the blood bags. During the blood bag separation process, the weighing sensor 210 monitors the weight of the blood bags in real time and transmits the data to the control system to optimize mixing parameters and ensure that the blood bags meet dosage requirements, avoiding safety hazards caused by imbalances in proportion. The weighing sensor 210 can effectively detect the weight and changes of the blood bags within the tray 103.

[0042] refer to Figure 1 and Figure 6 In some embodiments of this utility model, the blood component separator 100 further includes a stopper-breaking mechanism 108. The stopper-breaking mechanism 108 is disposed on the side 104, located in front of the tray 103, and is used to clamp and break the stopper rod inside the blood bag. The stopper-breaking mechanism 108 can mechanically clamp and break the stopper rod inside the blood bag, allowing blood or preservation solution to flow within the blood bag, and avoiding the inefficiency or contamination risks associated with manual stopper breaking. Further, refer to... Figure 6The deblocking mechanism 108 includes a first gripper 601 and a second gripper 602. The first gripper 601 is fixedly mounted on the side 104, and the second gripper 602 is rotatably mounted on the side 104. The rotation axis of the second gripper 602 is perpendicular to the side 104. The second gripper 602 can rotate to change the angle between its own opening axis and the opening axis of the first gripper 601, thereby breaking the plug rod clamped in the first gripper 601 and the second gripper 602. This improves the automation of the deblocking process, requiring no excessive movement; deblocking can be achieved simply by rotating the second gripper 602 around its own axis. Furthermore, a hanging needle 213 is also provided in the tray 103. The hanging needle 213 is located on the side of the tray 103 near the deblocking mechanism 108, facilitating the hanging of the blood bag on the hanging needle 213 and placing it in the tray 103 for shaking and deblocking, thus improving structural stability.

[0043] refer to Figures 3 to 5 In some embodiments of the utility model, the tray 103 has a middle position, a first position, and a second position. The middle position is parallel to the horizontal plane, and the first and second positions are tilted in opposite directions relative to the middle position. The tilt angle between the first and second positions relative to the middle position is α. One swing of the tray 103 from any initial position through the middle, first, and second positions and back to the initial position constitutes one swing. The number of swings per minute of the tray 103 is f, where -35°≤α≤35°, and / or 0≤f≤60. Appropriate swing amplitude and frequency can accommodate both the requirements of mixing efficiency and blood bag stability. Excessive swing angle or excessive swing frequency may cause the blood bag to fall off the tray 103. A specific scenario for one swing is as follows: Figures 3 to 5 As shown, tray 103 from Figure 3 The position swings counterclockwise to Figure 4 Then swing clockwise to Figure 3 as well as Figure 5 Finally, it swings back counterclockwise to... Figure 3 The position shown represents one swing, and the sign of the tilt angle α is determined by... Figure 3 The middle position shown is the reference point. Tilting upwards or downwards on the same side indicates positive or negative, representing the direction of tilt. Furthermore, in some embodiments of this utility model, the blood component separator 100 also includes a controller, which can control the flipping frequency and the tilting angle during flipping to adapt to different production needs.

[0044] refer to Figure 8In some embodiments of this utility model, the blood component separator 100 further includes a photoelectric sensor 801 and a sensing plate 802. The sensing plate 802 is fixedly connected to the drive shaft 102. When the drive shaft 102 rotates, the sensing plate 802 swings within the photoelectric sensor 801, allowing the photoelectric sensor 801 to detect the swing angle of the tray 103. The sensing plate 802 is located between the transmitting end and the receiving end of the photoelectric sensor 801. When the drive shaft 102 rotates, both the tray 103 and the sensing plate 802, which are fixedly connected to the drive shaft 102, swing accordingly. The photoelectric sensor 801 detects the swing amplitude of the tray 103 by sensing the swing of the sensing plate 802, thus providing a clear understanding of the current swing status of the tray 103. Furthermore, the photoelectric sensor 801 transmits data to the controller, which can then adjust the swing angle of the tray 103 to prevent its swing amplitude from being too small or too large, adapting to different production needs.

[0045] Specifically, in some embodiments of this utility model, the blood component separator 100 is used as follows: First, the blood bag is placed on the tray 103 and hung on the hanging needle 213, and the stopper rod of the blood bag is clamped in the stopper breaking mechanism 108. The stopper breaking mechanism 108 is activated to break the stopper rod, and then the drive mechanism 200 is controlled to drive the drive shaft 102 to rotate, thereby driving the tray 103 to swing to achieve shaking. It is an automated operation with high working efficiency, and the shaking mechanism is integrated into the main unit box 101, which has a higher degree of integration.

[0046] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention 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 the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A blood component separator, characterized in that, include: A main unit chassis, wherein the sidewall of the main unit chassis includes an adjacent front and a side, and the side is provided with a through hole; The drive mechanism is located inside the main unit chassis; A drive shaft is rotatably inserted through the through hole, one end of the drive shaft is located inside the main unit housing and connected to the drive mechanism, and the other end of the drive shaft is located outside the main unit housing; A tray, located on the outer side of the main unit, is used to hold blood bags. The tray is fixedly connected to the drive shaft, and the drive mechanism is used to drive the drive shaft to rotate, thereby causing the tray to swing around the axis of the drive shaft.

2. The blood component separator according to claim 1, characterized in that, The side has an inwardly recessed groove, the through hole communicates with the groove, and at least a portion of the tray is located within the groove.

3. The blood component separator according to claim 2, characterized in that, The side includes a first wall and a second wall connected to each other. The second wall is recessed into the interior of the main unit relative to the first wall. The groove is formed between the first wall and the second wall. The through hole is provided in the second wall.

4. The blood component separator according to claim 1, characterized in that, The drive shaft is rotatably connected to the side, or a mounting base is fixedly provided inside the main unit housing, and the drive shaft is rotatably connected to the mounting base.

5. The blood component separator according to claim 1, characterized in that, The drive shaft includes a detachably connected first section and a second section. The first section is connected to the drive mechanism, and the second section is located outside the main unit and is fixedly connected to the tray.

6. The blood component separator according to claim 1, characterized in that, The driving mechanism includes a driving component, a transmission component, and a transmission rod. The transmission component includes a rotating part and a moving part. The central axis of the rotating part is a first axis, and the central axis of the driving shaft is a second axis. The driving shaft can rotate around the second axis. The rotating part can rotate relative to the moving part around the first axis. The first axis and the second axis are spaced apart and parallel to each other. One end of the transmission rod is fixedly connected to the driving shaft, and the other end of the transmission rod passes through the rotating part and can slide relative to the rotating part. The driving component is used to drive the moving part to move in the vertical direction, thereby causing the rotating part to drive the transmission rod to swing, so that the driving shaft rotates around the second axis.

7. The blood component separator according to claim 6, characterized in that, The drive mechanism further includes a drive wheel, a driven wheel, and a belt. The drive wheel and the driven wheel are spaced apart in the vertical direction and are connected to the belt for transmission. The moving part is fixedly connected to the belt. The drive member is used to drive the drive wheel to rotate, thereby causing the belt and the driven wheel to rotate, so that the moving part moves in the vertical direction.

8. The blood component separator according to claim 7, characterized in that, The drive mechanism also includes a support plate, on which the driving wheel and the driven wheel are rotatably mounted. The support plate has a guide groove in the vertical direction, and the moving part is slidably connected to the guide groove.

9. The blood component separator according to claim 1, characterized in that, The tray has a middle position, a first position, and a second position. The middle position is parallel to the horizontal plane. The first position and the second position are tilted in opposite directions relative to the middle position. The tilt angle between the first position and the second position and the middle position is α. The tray swings from any initial position through the middle position, the first position, and the second position and then back to the initial position, which is considered one swing. The number of swings per minute of the tray is f, where -35°≤α≤35°, and / or 0≤f≤60.

10. The blood component separator according to claim 9, characterized in that, The blood component separator also includes a photoelectric sensor and a sensing plate. The sensing plate is fixedly connected to the drive shaft. When the drive shaft rotates, the sensing plate swings within the photoelectric sensor so that the photoelectric sensor can detect the angle of the tray's swing.

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