A stem cell collector

Abstract

The application provides a stem cell collector, which comprises a body and two extrusion devices, the body has two inner cavities, a front side wall of the body is formed with two extrusion surfaces, the extrusion surfaces are provided with openings in communication with the inner cavities, and the two extrusion devices are arranged on the body and correspond to one extrusion surface respectively. The extrusion device comprises an extrusion plate, a first moving assembly, a partition plate, a second moving assembly, an extrusion block, a third moving assembly and a driving mechanism. The stem cell collector can automatically extrude a blood bag, facilitates the collection of a solution containing a plasma layer, a white blood cell and platelet layer and a small part of a red blood cell layer, reduces the mixing of the red blood cell layer, improves the collection efficiency and brings convenience for the collection of stem cells.

Description

Technical Field

[0001] This invention relates to the field of sampling device technology, and more specifically to a stem cell collector. Background Technology

[0002] Stem cells are primitive cells with the potential for self-replication, multi-lineage differentiation, and homing. They are the origin cells of the body and the progenitor cells that form various tissues and organs. Scientists have now successfully isolated stem cells from many organs and tissues, including retinal stem cells, pancreatic stem cells, and osteoblastic stem cells. Research shows that stem cells exist not only in embryos but also in adults, and can be isolated from tissues such as umbilical cord blood, umbilical cord, placenta, bone marrow, fat, and blood.

[0003] Blood centrifugation typically involves adding an anticoagulant such as sodium citrate to a blood sample before placing it in a centrifuge. The high rotation speed and the different densities of blood components allow for the separation of blood into distinct layers. Blood centrifugation generally separates blood into three relatively distinct layers: the plasma layer, the white blood cell and platelet layer, and the red blood cell layer. The plasma layer is the top layer, usually a pale yellow, transparent liquid containing water, plasma globulins, serum proteins, and inorganic salts. The white blood cell and platelet layer is the middle layer, often a thin white layer containing mainly neutrophils, basophils, monocytes, and platelets. The red blood cell layer is the bottom layer, primarily composed of red blood cells, and is a dark red, opaque solid.

[0004] After centrifuging blood, it is generally necessary to collect the top and middle layers of solution from the blood bag, while minimizing the contamination of the bottom layer solution. Therefore, a collection device is proposed to collect the centrifuged blood and reduce the contamination of the bottom layer solution. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a stem cell collector that facilitates the collection of blood after centrifugation and reduces the mixing of the bottom layer solution.

[0006] To achieve the above objectives, the present invention provides a stem cell collector, comprising a body having two inner cavities, two extrusion surfaces formed on the front sidewall of the body, each extrusion surface having an opening communicating with the inner cavity; and two extrusion devices disposed on the body and corresponding to one of the extrusion surfaces, each extrusion device comprising: an extrusion plate disposed on the front side of the body and arranged opposite to the extrusion surface, the extrusion plate and the extrusion surface forming an extrusion station; a first moving assembly disposed in the inner cavity and connected to the extrusion plate; a partition plate disposed in the opening and extending into the inner cavity; a second moving assembly disposed in the inner cavity and connected to the partition plate; an extrusion block disposed in the opening and extending into the inner cavity, the extrusion block being located above the partition plate; a third moving assembly disposed in the inner cavity and connected to the extrusion block; and a driving mechanism disposed in the inner cavity, the driving mechanism being operatively connected to the first moving assembly, the second moving assembly, and the third moving assembly respectively.

[0007] When the driving mechanism is connected to the first moving component, the first moving component can drive the extrusion plate to move toward the extrusion surface; when the driving mechanism is connected to the second moving component, the second moving component can drive the partition plate to move toward the extrusion plate; when the driving mechanism is connected to the third moving component, the third moving component can drive the extrusion block to move toward the extrusion plate.

[0008] Preferably, the driving mechanism includes: a drive motor fixed in the inner cavity; a first transmission assembly for drivingly connecting the drive motor and the first moving assembly; a first clutch disposed on the side of the drive motor opposite to the extrusion surface, the first clutch being used to control the engagement or disengagement of the drive motor and the first transmission assembly; a second transmission assembly disposed on the side of the drive motor opposite to the first clutch, the second transmission assembly being used to drively connect the drive motor and the first moving assembly, and to drively connect the drive motor and the third moving assembly; a second clutch disposed between the drive motor and the second transmission assembly, the second clutch being used to control the engagement or disengagement of the drive motor and the second transmission assembly; a third clutch being used to control the engagement or disengagement of the second transmission assembly and the second moving assembly; and a fourth clutch being used to control the engagement or disengagement of the second transmission assembly and the third moving assembly.

[0009] Preferably, the first clutch, the second clutch, and the third clutch are all magnetic powder clutches; the second transmission assembly includes a first gear, a second gear, and a third gear, the first gear being coaxially disposed on the output shaft of the second clutch, the second gear being coaxially disposed on the input shaft of the third clutch and located below the first gear, and the third gear being coaxially disposed on the input shaft of the fourth clutch and located above the first gear, and the third gear and the second gear respectively meshing with the first gear.

[0010] Preferably, the first moving component includes: a first lead screw, the two ends of which are rotatably connected to the cavity wall of the inner cavity, the axis of the first lead screw being perpendicular to the extrusion surface, and the first lead screw being connected to the first transmission component; a first support, which is threaded onto the first lead screw, and the first support is slidably fitted in the inner cavity in a direction parallel to the axis of the first lead screw; and three guide rods, which are disposed on the first support, and the three guide rods pass through the extrusion surface and are connected to the extrusion plate.

[0011] The first transmission assembly includes a first rotating shaft, a first synchronous pulley, a second synchronous pulley, and a transmission belt. One end of the first rotating shaft is connected to the output shaft of the first clutch, and the other end of the first rotating shaft is rotatably disposed on the cavity wall of the inner cavity. The first synchronous pulley is fixedly mounted on the first rotating shaft, the second synchronous pulley is fixedly mounted on the first lead screw, and the transmission belt is wound around the first synchronous pulley and the second synchronous pulley.

[0012] Preferably, the second moving component includes: a second lead screw, one end of which is rotatably connected to the cavity wall of the inner cavity, and the other end of which is connected to the output shaft of the third clutch, the axis of the second lead screw being perpendicular to the extrusion surface; a second support, which is threaded onto the second lead screw and is slidably fitted in the inner cavity in a direction parallel to the axis of the second lead screw; and a connecting arm, which is disposed on the second support and connected to the partition plate.

[0013] Preferably, the third moving component includes: a first bracket disposed at the top of the inner cavity; a third lead screw rotatably passing through the first bracket, one end of the third lead screw being threadedly engaged with the extrusion block, the other end of the third lead screw being connected to the output shaft of the fourth clutch, and the axis of the third lead screw being perpendicular to the extrusion surface; and two supporting slide rods disposed at the top of the inner cavity, the axes of the supporting slide rods being perpendicular to the extrusion surface, and the two supporting slide rods being slidably engaged with the extrusion block respectively.

[0014] The beneficial effects of this invention are:

[0015] This invention discloses a stem cell collector, which, through the design of a first moving component cooperating with a squeezing plate, a second moving component cooperating with a separator plate, a third moving component cooperating with a squeezing block, and a driving mechanism cooperating with the first, second, and third moving components respectively, can automatically squeeze blood bags, facilitating the collection of solutions containing plasma, white blood cells, platelets, and a small portion of red blood cells, reducing the contamination of red blood cells, improving collection efficiency, and bringing convenience to stem cell collection. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of a stem cell collector provided in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0019] Figure 3 This is a schematic diagram of the internal cavity structure;

[0020] Figure 4 This is a cross-sectional schematic diagram of the inner cavity;

[0021] Figure label:

[0022] 10-Main body, 11-Inner cavity, 12-Extrusion surface, 13-Opening, 14-Extrusion station, 15-Plug-off piece, 16-Clamping piece, 17-Suspension piece, 18-First slide groove, 19-Second slide groove;

[0023] 20-Extruded plate;

[0024] 30-First moving component, 31-First lead screw, 32-First support, 33-Guide rod;

[0025] 40 - Divider;

[0026] 50 - Second moving component; 51 - Second lead screw; 52 - Second support; 53 - Connecting arm;

[0027] 60 - Extruded block;

[0028] 70-Third moving component, 71-First bracket, 72-Third lead screw, 73-Support slide bar;

[0029] 81-Drive motor, 82-First transmission assembly, 821-First rotating shaft, 822-First synchronous pulley, 823-Second synchronous pulley, 824-Transmission belt, 83-First clutch, 84-Second transmission assembly, 841-First gear, 842-Second gear, 843-Third gear, 85-Second clutch, 86-Third clutch, 87-Fourth clutch;

[0030] 91-Second stent, 92-Third stent, 93-Fourth stent, 94-Fifth stent. Detailed Implementation

[0031] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0032] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element 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 the present invention.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] like Figure 1-4 As shown, in one embodiment of the present invention, a stem cell collector is provided, including a body 10 and two squeezing devices. The body 10 has two inner cavities 11, and the front sidewall of the body 10 forms two squeezing surfaces 12. The squeezing surfaces 12 are provided with openings 13 communicating with the inner cavities 11. The two squeezing devices are disposed on the body 10 and correspond to one squeezing surface 12 respectively.

[0038] The extrusion device includes an extrusion plate 20, a first moving component 30, a partition plate 40, a second moving component 50, an extrusion block 60, a third moving component 70, and a drive mechanism.

[0039] A compression plate 20 is disposed on the front side of the machine body 10 and is arranged opposite to the compression surface 12. A compression station 14 for placing blood bags is formed between the compression plate 20 and the compression surface 12. A first moving assembly 30 is disposed in the inner cavity 11 and connected to the compression plate 20. A partition plate 40 is disposed in the opening 13 and extends into the inner cavity 11. A second moving assembly 50 is disposed in the inner cavity 11 and connected to the partition plate 40. A compression block 60 is disposed in the opening 13 and extends into the inner cavity 11. The compression block 60 is located above the partition plate 40. The end face of the compression block 60 facing the compression plate 20 and the end face of the partition plate 40 facing the compression plate 20 are both flush with the compression surface 12. A third moving assembly 70 is disposed in the inner cavity 11 and connected to the compression block 60.

[0040] The drive mechanism is disposed in the inner cavity 11 and can be drivenly connected to the first moving component 30, the second moving component 50, and the third moving component 70, respectively. When the drive mechanism is drivenly connected to the first moving component 30, the first moving component 30 can drive the extrusion plate 20 to move towards the extrusion surface 12. When the drive mechanism is drivenly connected to the second moving component 50, the second moving component 50 can drive the partition plate 40 to move towards the extrusion plate 20. When the drive mechanism is drivenly connected to the third moving component 70, the third moving component 70 can drive the extrusion block 60 to move towards the extrusion plate 20.

[0041] See Figure 2Each extrusion surface 12 is provided with a stopper 15, a clamping member 16, and a suspension member 17 from top to bottom. During operation, the blood bag is first placed in the extrusion station 14 and hung on the suspension member 17. Then, the stopper rod of the blood bag is placed between the clamping members 16 and between the stopper 15. Driven by the stopper motor (not shown in the figure), the stopper 15 is driven to rotate. The stopper 15 rotates or rotates. Because one end of the stopper rod is clamped by the clamping member 16 and the other end is subjected to the rotational torque of the stopper 15, the stopper rod tilts until it breaks at the clamping member 16, thus realizing the automatic breaking of the stopper rod.

[0042] During operation, the drive mechanism first connects to the first moving component 30, causing the first moving component 30 to move the squeezing plate 20 toward the squeezing surface 12, clamping the blood bag within the squeezing station 14. Then, the drive mechanism disconnects from the first moving component 30 and connects to the second moving component 50, causing the second moving component 50 to move the partition plate 40 toward the squeezing plate 20. The partition plate 40 further squeezes the blood bag. When the partition plate 40 abuts against the squeezing plate 20, it divides the inside of the blood bag into an upper bag body and a lower bag body. The solution in the upper bag body contains a plasma layer, a white blood cell and platelet layer, and a small amount of red blood cell layer, while the solution in the lower bag body contains only a red blood cell layer.

[0043] Then, the drive mechanism disconnects from the second moving component 50 and connects to the third moving component 70, causing the third moving component 70 to move the squeezing block 60 toward the squeezing plate 20. As a result, the squeezing block 60 squeezes the upper bag of the blood bag, thereby squeezing out the solution inside the upper bag of the blood bag, thus achieving the collection of the solution containing the plasma layer, white blood cell and platelet layer and a small portion of the red blood cell layer.

[0044] The stem cell collector of this embodiment, through the design of the cooperation between the first moving component 30 and the squeezing plate 20, the cooperation between the second moving component 50 and the partition plate 40, the cooperation between the third moving component 70 and the squeezing block 60, and the cooperation between the driving mechanism and the first moving component 30, the second moving component 50 and the third moving component 70 respectively, can automatically squeeze the blood bag, which facilitates the collection of solutions containing plasma layer, white blood cell and platelet layer and a small part of red blood cell layer, reduces the contamination of red blood cell layer, improves collection efficiency, and brings convenience to stem cell collection.

[0045] In one embodiment, the drive mechanism includes a drive motor 81, a first transmission assembly 82, a first clutch 83, a second transmission assembly 84, a second clutch 85, a third clutch 86, and a fourth clutch 87. The drive motor 81 is fixed in the inner cavity 11 by a second bracket 91. The first transmission assembly 82 is used to drive the drive motor 81 and the first moving assembly 30. The first clutch 83 is fixed to the side of the drive motor 81 opposite to the extrusion surface 12 by a third bracket 92. The first clutch 83 is used to control the engagement or disengagement of the drive motor 81 and the first transmission assembly 82.

[0046] The second transmission assembly 84 is disposed on the side of the drive motor 81 opposite to the first clutch 83. The second transmission assembly 84 is used to drive the drive motor 81 and the first moving assembly 30, and to drive the drive motor 81 and the third moving assembly 70. The second clutch 85 is fixed between the drive motor 81 and the second transmission assembly 84 by the fourth bracket 93. The second clutch 85 is used to control the engagement or disengagement of the drive motor 81 and the second transmission assembly 84. The third clutch 86 and the fourth clutch 87 are fixed in the inner cavity 11 by the fifth bracket 94. The third clutch 86 is used to control the engagement or disengagement of the second transmission assembly 84 and the second moving assembly 50, and the fourth clutch 87 is used to control the engagement or disengagement of the second transmission assembly 84 and the third moving assembly 70.

[0047] Specifically, the first clutch 83, the second clutch 85, and the third clutch 86 all employ magnetic powder clutches. A magnetic powder clutch is an automated actuator formed by combining an input shaft and an output shaft. The space between the two shafts of the magnetic powder clutch is filled with granular magnetic powder. When the magnetic powder coil is conductive, magnetic force is generated, and the magnetic powder hardens, transmitting torque during continuous sliding. When the magnetic powder coil is not conductive, torque is not transmitted to the output shaft through the input shaft, thus enabling the engagement or disengagement of the input and output shafts.

[0048] The aforementioned drive motor 81, first clutch 83, second clutch 85, third clutch 86 and fourth clutch 87 are all controlled by a controller (not shown in the attached figure). The controller can be a PLC, etc., which will not be described in detail here.

[0049] The second transmission assembly 84 includes a first gear 841, a second gear 842, and a third gear 843. The first gear 841 is coaxially mounted on the output shaft of the second clutch 85. The second gear 842 is coaxially mounted on the input shaft of the third clutch 86 and located below the first gear 841. The third gear 843 is coaxially mounted on the input shaft of the fourth clutch 87 and located above the first gear 841. The third gear 843 and the second gear 842 respectively mesh with the first gear 841.

[0050] In one embodiment, the second moving assembly 50 includes a second lead screw 51, a second support 52, and a connecting arm 53. One end of the second lead screw 51 is rotatably connected to the cavity wall of the inner cavity 11, and the other end of the second lead screw 51 is connected to the output shaft of the third clutch 86. The axis of the second lead screw 51 is perpendicular to the extrusion surface 12. The second support 52 is threaded onto the second lead screw 51 and slides in the inner cavity 11 in a direction parallel to the axis of the second lead screw 51. The connecting arm 53 is disposed on the second support 52 and connected to the partition plate 40.

[0051] When the partition plate 40 needs to extend or retract from the opening 13, the controller de-energizes the first clutch 83 and the fourth clutch 87, and energizes the second clutch 85 and the third clutch 86. At this time, the drive motor 81 and the second transmission assembly 84 are engaged. When the controller controls the drive motor 81 to work, it transmits torque to the second lead screw 51 through the second clutch 85, the first gear 841, the second gear 842, and the third clutch 86, thereby rotating the second lead screw 51. Since the second support 52 is threaded onto the second lead screw 51 and slides in the inner cavity 11 through the second groove, the second support 52 moves on the second lead screw 51 after it rotates, thereby driving the partition plate 40 to move.

[0052] In one embodiment, the third moving component 70 includes a first bracket 71, a third lead screw 72, and two supporting slide rods 73. The first bracket 71 is disposed at the top of the inner cavity 11. The extrusion block 60 has a screw hole and guide holes arranged on both sides of the screw hole on the side opposite to the extrusion plate 20. The third lead screw 72 is rotatably inserted into the first bracket 71. One end of the third lead screw 72 extends into the screw hole and is threaded into the extrusion block 60. The other end of the third lead screw 72 is connected to the output shaft of the fourth clutch 87. The axis of the third lead screw 72 is perpendicular to the extrusion surface 12. The two supporting slide rods 73 are disposed at the top of the inner cavity 11. The axes of the supporting slide rods 73 are perpendicular to the extrusion surface 12. The two supporting slide rods 73 extend into the guide holes and slide in cooperation with the extrusion block 60.

[0053] When it is necessary to drive the extrusion block 60 to extend or retract from the opening 13, the controller de-energizes the first clutch 83 and the third clutch 86, and energizes the second clutch 85 and the fourth clutch 87. At this time, the drive motor 81 and the second transmission assembly 84 are engaged. When the controller controls the drive motor 81 to work, it transmits torque to the third lead screw 72 through the second clutch 85, the first gear 841, the third gear 843, and the fourth clutch 87, thereby rotating the third lead screw 72. Since the extrusion block 60 is threadedly engaged with the third lead screw 72, and the extrusion block 60 is slidably engaged in the inner cavity 11 through the two support slide rods 73, the extrusion block 60 moves relative to the third lead screw 72 when the third lead screw 72 rotates.

[0054] By designing the first clutch 83, the second clutch 85, the third clutch 86, and the fourth clutch 87, when it is necessary to drive the partition plate 40 to extend or retract into the opening 13, or drive the squeezing block 60 to extend or retract into the opening 13, under the transmission action of the second transmission component 84, it is only necessary to control the power-off or power-on state of the corresponding clutches to realize the movement control of the partition plate 40 or the squeezing block 60. The overall structural design is novel and ensures the squeezing effect on the blood bag.

[0055] In one embodiment, the first moving assembly 30 includes a first lead screw 31, a first support 32, and three guide rods 33. The two ends of the first lead screw 31 are rotatably connected to the cavity wall of the inner cavity 11, and the axis of the first lead screw 31 is perpendicular to the extrusion surface 12. The first lead screw 31 is connected to the first transmission assembly 82. The first support 32 is threaded onto the first lead screw 31 and slides within the inner cavity 11 in a direction parallel to the axis of the first lead screw 31. The three guide rods 33 are respectively disposed on the first support 32 and pass through the extrusion surface 12 before connecting to the extrusion plate 20.

[0056] The first transmission assembly 82 includes a first rotating shaft 821, a first synchronous pulley 822, a second synchronous pulley 823, and a transmission belt 824. One end of the first rotating shaft 821 is connected to the output shaft of the first clutch 83, and the other end of the first rotating shaft 821 is rotatably mounted on the cavity wall of the inner cavity 11. The first synchronous pulley 822 is fixedly mounted on the first rotating shaft 821, the second synchronous pulley 823 is fixedly mounted on the first lead screw 31, and the transmission belt 824 is wound around the first synchronous pulley 822 and the second synchronous pulley 823.

[0057] When the extrusion plate 20 needs to move closer to or further away from the extrusion surface 12, the controller energizes the first clutch 83 and de-energizes the second clutch 85. At this time, the drive motor 81 and the first transmission assembly 82 are engaged. When the controller controls the drive motor 81 to work, it transmits torque to the first rotating shaft 821 through the first clutch 83. Through the transmission action of the first synchronous pulley 822, the second synchronous pulley 823 and the transmission belt 824, the first lead screw 31 is rotated. Since the first support 32 is threaded onto the first lead screw 31 and slides in the inner cavity 11 through the first groove, the first support 32 moves on the first lead screw 31 when the first lead screw 31 rotates, thereby driving the extrusion plate 20 to move.

[0058] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A stem cell collector, characterized in that: include: The machine body has two inner cavities, and the front sidewall of the machine body forms two extrusion surfaces, with openings on the extrusion surfaces communicating with the inner cavities; and Two extrusion devices are disposed on the machine body and each corresponds to one of the extrusion surfaces. The extrusion devices include: An extrusion plate is disposed on the front side of the machine body and arranged opposite to the extrusion surface, and an extrusion station is formed between the extrusion plate and the extrusion surface; A first movable component is disposed in the inner cavity and connected to the extrusion plate; A partition plate is disposed within the opening and extends into the inner cavity; A second movable component is disposed in the cavity and connected to the partition plate; A squeezing block is disposed within the opening and extends into the inner cavity, the squeezing block being positioned above the partition plate; A third movable component, disposed within the cavity and connected to the compression block; and A drive mechanism is disposed in the inner cavity, and the drive mechanism can be transmittedly connected to the first moving component, the second moving component and the third moving component respectively; When the drive mechanism is connected to the first moving component, the first moving component can drive the extrusion plate to move toward the extrusion surface; When the drive mechanism is connected to the second moving component, the second moving component can drive the partition plate to move toward the extrusion plate; When the drive mechanism is connected to the third moving component, the third moving component can drive the extrusion block to move toward the extrusion plate; The drive mechanism includes: A drive motor, which is fixed in the inner cavity; A first transmission component is used to drive the drive motor and the first moving component; A first clutch is disposed on the side of the drive motor away from the extrusion surface. The first clutch is used to control the engagement or disengagement of the drive motor from the first transmission assembly. A second transmission assembly is disposed on the side of the drive motor opposite to the first clutch. The second transmission assembly is used to drive the drive motor and the first moving assembly, and to drive the drive motor and the third moving assembly. A second clutch is disposed between the drive motor and the second transmission assembly. The second clutch is used to control the engagement or disengagement of the drive motor and the second transmission assembly. A third clutch is used to control the engagement or disengagement of the second transmission assembly and the second moving assembly; and The fourth clutch is used to control the engagement or disengagement of the second transmission assembly and the third moving assembly.

2. The stem cell collector according to claim 1, characterized in that: The first clutch, the second clutch, and the third clutch are all magnetic powder clutches; The second transmission assembly includes a first gear, a second gear, and a third gear. The first gear is coaxially disposed on the output shaft of the second clutch. The second gear is coaxially disposed on the input shaft of the third clutch and located below the first gear. The third gear is coaxially disposed on the input shaft of the fourth clutch and located above the first gear. The third gear and the second gear mesh with the first gear, respectively.

3. The stem cell collector according to claim 2, characterized in that: The first moving component includes: The first lead screw has two ends that are rotatably connected to the cavity wall of the inner cavity, the axis of the first lead screw is perpendicular to the extrusion surface, and the first lead screw is connected to the first transmission assembly; A first support, threadedly fitted onto the first lead screw, slides within the inner cavity in a direction parallel to the axis of the first lead screw; and Three guide rods are installed on the first support, and the three guide rods pass through the extrusion surface and are connected to the extrusion plate; The first transmission assembly includes a first rotating shaft, a first synchronous pulley, a second synchronous pulley, and a transmission belt. One end of the first rotating shaft is connected to the output shaft of the first clutch, and the other end of the first rotating shaft is rotatably disposed on the cavity wall of the inner cavity. The first synchronous pulley is fixedly mounted on the first rotating shaft, the second synchronous pulley is fixedly mounted on the first lead screw, and the transmission belt is wound around the first synchronous pulley and the second synchronous pulley.

4. The stem cell collector according to claim 2, characterized in that: The second moving component includes: The second lead screw has one end rotatably connected to the cavity wall of the inner cavity and the other end connected to the output shaft of the third clutch. The axis of the second lead screw is perpendicular to the extrusion surface. A second support, threaded onto the second lead screw, slides within the inner cavity in a direction parallel to the axis of the second lead screw; and A connecting arm is mounted on the second support and connected to the partition plate.

5. The stem cell collector according to claim 2, characterized in that: The third moving component includes: The first support is disposed at the top of the inner cavity; A third lead screw, rotatably mounted within the first bracket, has one end threadedly engaged with the extrusion block, and the other end connected to the output shaft of the fourth clutch. The axis of the third lead screw is perpendicular to the extrusion surface. Two support slide rods are disposed at the top of the inner cavity, the axis of the support slide rods is perpendicular to the extrusion surface, and the two support slide rods are respectively slidably engaged with the extrusion block.

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