Liftable blood bag unpinching device and blood component separator

Abstract

The utility model provides a liftable blood bag breaks plug device and blood component separation machine. Blood bag breaks plug device includes mounting panel and installs the needle of hanging, first clamping mechanism, second clamping mechanism, first drive mechanism and second drive mechanism on mounting panel. The needle is matched with the hole of hanging bag of blood bag, first clamping mechanism and second clamping mechanism are opposite and interval setting, first clamping mechanism is used for clamping the hard pipe of external blood bag, and second clamping mechanism is used for clamping the plug rod in the inside of hose through the hose of external blood bag, first drive mechanism is driven to be connected with second clamping mechanism to drive second clamping mechanism reciprocating rotation to break off plug rod, second drive mechanism is driven to be connected with first clamping mechanism, second clamping mechanism to drive first clamping mechanism and second clamping mechanism synchronous movement to the direction of far away or close to the needle. Blood component separation machine includes liftable blood bag breaks plug device. The present application can adapt to different brand specifications blood bag, automatically break plug, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment, and in particular to a liftable blood bag stopper and a blood component separator. Background Technology

[0002] Currently, the medical industry uses four- or five-piece blood bags for blood collection and preparation. Whole blood bags, mother bags, and preservation solution bags all include a bag body, a rigid tube connected to the bag body, and a transfusion tubing. A stopper rod, connected to the rigid tube and located inside the tubing, is installed at the connection point. This stopper rod isolates the bag body and tubing, ensuring a vacuum seal before use. During blood collection and preparation, the stopper rod needs to be broken off at its base (the connection point between the stopper rod and the rigid tube) to connect the blood bag to the tubing. Blood then flows into or out of the blood bag through the tubing. Currently, there are various brands and models of blood bags on the market, and existing stopper-breaking devices cannot break all the stopper rods, often requiring a second manual stopper break, which does not meet the requirements for automatic stopper breaking and results in a poor user experience. Utility Model Content

[0003] The purpose of this application is to overcome the shortcomings commonly found in the market as mentioned in the background art above, and to provide a liftable blood bag stopper and a blood component separator.

[0004] The present application addresses the above problems through the following technical solutions.

[0005] This embodiment provides a liftable blood bag stopper breaking device, including a mounting plate and a hanging needle, a first clamping mechanism, a second clamping mechanism, a first driving mechanism, and a second driving mechanism mounted on the mounting plate; the hanging needle matches the hanging hole of the external blood bag; the first clamping mechanism and the second clamping mechanism are opposite to each other and spaced apart, the first clamping mechanism is used to clamp the rigid tube of the external blood bag, and the second clamping mechanism is used to clamp the stopper rod inside the flexible tube through the flexible tube of the external blood bag; the first driving mechanism is driven to the second clamping mechanism to drive the second clamping mechanism to reciprocate to break the stopper rod; the second driving mechanism is driven to the first clamping mechanism and the second clamping mechanism to drive the first clamping mechanism and the second clamping mechanism to move synchronously away from or towards the hanging needle.

[0006] In some embodiments, the liftable blood bag stopper also includes a weighing sensor mounted on a mounting plate, with a hanging pin mounted on the sensing end of the weighing sensor.

[0007] In some embodiments, the liftable blood bag stopper also includes a transmission mechanism, and a first drive mechanism is connected to a first clamping mechanism via the transmission mechanism to drive the first clamping mechanism to rotate in opposite directions relative to the second clamping mechanism.

[0008] In some embodiments, both the first clamping mechanism and the second clamping mechanism include two clamping arms.

[0009] In some embodiments, the first drive mechanism includes a first mounting base, a first motor, a drive shaft, a drive pulley, a belt, a driven pulley, and a driven shaft. The first motor is fixedly mounted on the first mounting base. The output shaft of the first motor is connected to one end of the drive shaft via a coupling. The drive shaft is mounted on the first mounting base via ball bearings. The other end of the drive shaft is connected to the drive pulley. The driven shaft is mounted on the first mounting base via ball bearings. One end of the driven shaft is fixedly connected to the driven pulley. The other end of the driven shaft is fixedly connected to a second clamping mechanism. The surfaces of the drive pulley and the driven pulley are connected by belt drive. The diameter of the drive pulley is smaller than the diameter of the driven pulley. The transmission mechanism includes a driving gear and a driven gear. A second clamping mechanism is mounted on the driving gear. The driving gear is fixedly connected to the driven shaft. The driven gear is rotatably mounted on the first mounting base. The driving gear meshes with the driven gear. The first clamping mechanism is mounted on the driven gear.

[0010] In some embodiments, the second drive mechanism includes a second mounting base, a second motor, a trapezoidal lead screw, a lead screw nut, a drive mounting base, and a linear guide shaft. The second motor is mounted on the second mounting base. One end of the trapezoidal lead screw is fixedly connected to the output shaft of the second motor, and the other end of the trapezoidal lead screw is mounted on the second mounting base via a bearing. The lead screw nut is screwed onto the trapezoidal lead screw. Both ends of the linear guide shaft are fixedly mounted on the second mounting base. The linear guide shaft is arranged parallel to the trapezoidal lead screw, and a linear guide bearing is slidably sleeved on the linear guide shaft. The drive mounting base is fixedly sleeved on the lead screw nut and the linear guide bearing. The first drive mechanism includes a first mounting base, a first clamping mechanism, and a second clamping mechanism mounted on the first mounting base. The first mounting base is mounted on the drive mounting base, and the second drive mechanism is fixedly mounted on a mounting plate.

[0011] In some embodiments, a baffle is mounted on the drive mounting base, and a first slotted photoelectric sensor and a second slotted photoelectric sensor that match the baffle are mounted on the second mounting base. When the second motor drives the drive mounting base to move linearly back and forth, the baffle can move into the U-shaped slot of the first slotted photoelectric sensor and the U-shaped slot of the second slotted photoelectric sensor.

[0012] In some embodiments, the hanging pin passes through the mounting plate and is mounted to the sensing end of the load cell via a connector. The load cell is mounted on and located on the first side of the mounting plate via a first mounting member.

[0013] In some embodiments, the first mounting base includes a second mounting member, a third mounting member, a connecting plate, and a fourth mounting member. A first motor, a drive shaft, and a drive pulley are mounted on the third mounting member, a driven shaft is mounted on the fourth mounting member, the driven pulley and the drive gear are mounted on the fourth mounting member via the driven shaft, the driven gear is mounted on the fourth mounting member via the second mounting member, and the third mounting member is connected to the fourth mounting member via the connecting plate. The third mounting member, the connecting plate, the fourth mounting member, the first drive mechanism, and the second drive mechanism are located on a first side of the mounting plate. The driven shaft and the second mounting member penetrate the mounting plate, and the first clamping mechanism, the second clamping mechanism, the drive gear, and the driven gear are located on a second side of the mounting plate.

[0014] This embodiment also provides a blood component separator, including a liftable blood bag stopper device, and the mounting plate is the front side plate of the blood component separator body.

[0015] The beneficial effects of this application are as follows: In this embodiment, the first and second clamping mechanisms of the blood bag stopper breaking device can simultaneously move away from or closer to the hanging needle. That is, the first and second clamping mechanisms are adjustable in height, allowing the base of the stopper rod of blood bags of different brands and specifications to fall between the first and second clamping mechanisms, thus achieving automatic stopper breaking. This embodiment of the blood bag stopper breaking device and blood component separator can adapt to blood bags of different brands and specifications, reducing the workload of staff and improving work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the first usage state of an embodiment of the liftable blood bag stopper of this application; Figure 2 for Figure 1 A schematic diagram of the second usage state of the liftable blood bag stopper device; Figure 3 for Figure 2 A magnified view of part A of the adjustable blood bag stopper device; Figure 4 for Figure 2 A schematic diagram of the retractable blood bag stopper device from another perspective; Figure 5 for Figure 1 A schematic diagram of part of the structure of the liftable blood bag stopper device; Figure 6 for Figure 5 A schematic diagram of part of the retractable blood bag stopper device from another perspective; Figure 7 for Figure 1 A schematic diagram of the weighing sensor and hanging needle combination of the adjustable blood bag stopper device; Figure 8 for Figure 1 A schematic diagram of the combined structure of the first clamping mechanism, the second clamping mechanism, and the first driving mechanism of the liftable blood bag stopper device. Figure 9 for Figure 8 An exploded view of the combined structure of the first clamping mechanism, the second clamping mechanism, and the first driving mechanism of the liftable blood bag stopper device. Figure 10 for Figure 1 A schematic diagram of the first drive mechanism of the liftable blood bag stopper device; Figure 11 for Figure 1 A schematic diagram of the second drive mechanism of the liftable blood bag stopper device; Figure 12 for Figure 11 A schematic diagram of the second drive mechanism of the liftable blood bag stopper device from another perspective; Figure 13 for Figure 11 An exploded view of the second drive mechanism of the liftable blood bag stopper device. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In the description of the present utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "located in," and "connected" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0019] The inventors of this application discovered that the reason why existing plug-breaking devices cannot break all plug rods 103 on the market is that blood bags 100 of different brands and specifications have different bag sizes and even different lengths of rigid tubes 101. That is, the distance from the root of the plug rod 103 to the bag hanging hole is different. Only when two forces are applied to the rigid tube 101 and the plug rod 103 respectively can the plug rod 103 be broken from its root. If both breaking forces are applied to the rigid tube 101 or the plug rod 103, it is impossible to break the plug rod 103 and thus connect the bag body and the tubing 102. However, the two clamping mechanisms of the stopper breaking device on the market are fixedly installed, and the distance between the clamping mechanism and the hanging needle 2 is constant. When blood bags 100 of different brands and specifications are fixedly hung on the hanging needle 2, the root of the stopper rod 103 of some blood bags 100 is just in the middle of the two clamping mechanisms, and the stopper rod 103 can be broken smoothly; but the rigid tube 101 of some blood bags 100 is too long or too short. Both clamping mechanisms clamp the rigid tube 101 or the stopper rod 103, and the root of the stopper rod 103 is not in the middle of the two clamping mechanisms, so the stopper rod 103 cannot be broken.

[0020] refer to Figure 1-6 As shown in the illustrated embodiment, the lifting blood bag stopper breaking device includes a mounting plate 1 and hanging pins 2, a first clamping mechanism 3, a second clamping mechanism 4, a first driving mechanism 5, and a second driving mechanism 6 mounted on the mounting plate 1. Two hanging pins 2 match the hanging holes of the external blood bag and are used to fix the blood bag 100. The first clamping mechanism 3 and the second clamping mechanism 4 are arranged opposite to each other and spaced apart. Both the first clamping mechanism 3 and the second clamping mechanism 4 have two clamping arms, forming a clamping opening between the two clamping arms. The first clamping mechanism 3 is used to clamp the rigid tube 101 of the external blood bag 100, and the second clamping mechanism 4 is used to clamp the stopper rod 103 inside the flexible tube 102 of the external blood bag 100. The first driving mechanism 5 is driven to the second clamping mechanism 4, and the first driving mechanism 5 is used to drive the second clamping mechanism 4 to reciprocate to break the stopper rod 103. The second driving mechanism 6 is drivenly connected to the first clamping mechanism 3 and the second clamping mechanism 4 to drive the first clamping mechanism 3 and the second clamping mechanism 4 to move synchronously away from or towards the hanging needle 2. In this embodiment, the first driving mechanism 5 includes a first mounting base 57, the first clamping mechanism 3 and the second clamping mechanism 4 are mounted on the first mounting base 57, the first mounting base 57 is mounted on the output end of the second driving mechanism 6 (i.e., the driving mounting base 65), and the second driving mechanism 6 drives the first mounting base 57 to move so that the first clamping mechanism 3 and the second clamping mechanism 4 move synchronously away from or towards the hanging needle 2. In use, the blood bag 100 is fixedly hung on the two hanging needles 2. When the rigid tube 101 of the blood bag 100 is too short (refer to...), Figure 1Since the base of the stopper rod 103 is close to the bag hanging hole, the second drive mechanism 6 needs to be controlled to drive the first mounting base 57 to move, thereby causing the first clamping mechanism 3 and the second clamping mechanism 4 to move synchronously towards the hanging needle 2. This allows the base of the stopper rod 103 to rest between the first clamping mechanism 3 and the second clamping mechanism 4. That is, the first clamping mechanism 3 clamps the rigid tube 101 of the blood bag 100, and the second clamping mechanism 4 clamps the stopper rod 103 through the flexible tube 102 of the blood bag 100. At this time, the reciprocating rotation of the second clamping mechanism 4 can break the stopper rod 103 from its base. Conversely, when the rigid tube 101 of the blood bag 100 is too long (see reference...), Figure 2 , Figure 3 Since the base of the stopper rod 103 is far from the bag hanging hole, the second drive mechanism 6 needs to be controlled to drive the first mounting base 57 to move, thereby causing the first clamping mechanism 3 and the second clamping mechanism 4 to move synchronously away from the hanging needle 2, so that the base of the stopper rod 103 rests between the first clamping mechanism 3 and the second clamping mechanism 4. At this time, the second clamping mechanism 4 can reciprocate to break the stopper rod 103 from its base. Since the first clamping mechanism 3 and the second clamping mechanism 4 of the blood bag stoppering device in this embodiment can rise and fall relative to the hanging needle 2, the blood bag stoppering device of this embodiment can adapt to blood bags 100 of different brands and specifications, realize automatic stoppering, reduce the workload of staff, and improve work efficiency.

[0021] refer to Figure 4 , 7 As shown in the illustrated embodiment, the lifting and lowering blood bag stopper device also includes a weighing sensor 7. The weighing sensor 7 is mounted on the mounting plate 1 via a first connecting block 71, and the hanging pin 2 is mounted on the sensing end of the weighing sensor 7. The weighing sensor 7 can detect the weight of the blood bag 100 hanging on the hanging pin 2, and the processor determines the separation status of blood components inside the blood bag 100 based on the change in weight.

[0022] refer to Figure 8 , 9As shown, the blood bag stopper-breaking device in the illustrated embodiment also includes a transmission mechanism 8. The first drive mechanism 5 is connected to the first clamping mechanism 3 through the transmission mechanism 8 to drive the first clamping mechanism 3 to rotate in opposite directions relative to the second clamping mechanism 4 simultaneously. That is, in the same time interval, the second clamping mechanism 4 rotates clockwise and the first clamping mechanism 3 rotates counterclockwise. In the next time interval, the directions of rotation of the two are reversed, thereby breaking the stopper rod 103 in the clamping opening back and forth. Compared with the technology where only a single clamping mechanism clamps the stopper rod 103 and rotates back and forth to break the stopper rod 103, the back and forth rotation of two clamping mechanisms allows the stopper rod 103 to bend at a wider angle, resulting in a higher success rate and higher efficiency. Specifically, the transmission mechanism 8 includes a driving gear 81 and a driven gear 82. The second clamping mechanism 4 is mounted on the driving gear 81. The driving gear 81 is fixedly connected to the output end (i.e., the driven shaft 56) of the first drive mechanism 5, and the second clamping mechanism 4 rotates with the driving gear 81. Driven gear 82 is rotatably mounted on mounting plate 1. Driven gear 81 meshes with driven gear 82. First clamping mechanism 3 is mounted on driven gear 82. First clamping mechanism 3 rotates back and forth in opposite directions with driven gear 82 relative to second clamping mechanism 4.

[0023] refer to Figure 6 , 8 As shown in Figures 9 and 10, the first drive mechanism 5 in the illustrated embodiment includes a first motor 51, a drive shaft 52, a drive pulley 53, a belt 54, a driven pulley 55, a driven shaft 56, and a first mounting base 57. The first motor 51 is fixedly mounted on the first mounting base 57. The output shaft of the first motor 51 is connected to one end of the drive shaft 52 via a coupling. The drive shaft 52 is rotatably mounted on the first mounting base 57 via ball bearings. The other end of the drive shaft 52 is connected to the drive pulley 53. The driven shaft 56 is rotatably mounted on the first mounting base 57 via ball bearings. One end of the driven shaft 56 is fixedly connected to the driven pulley 55, and the other end of the driven shaft 56 is fixedly connected to the second clamping mechanism 4. The surface of the drive pulley 53 and the surface of the driven pulley 55 are connected by a belt 54. The drive gear 81 is fixedly connected to the driven shaft 56. The first motor 51 drives the second clamping mechanism 4 to rotate reciprocally via the drive shaft 52, the driving pulley 53, the belt 54, the driven pulley 55, the driven shaft 56, and the driving gear 81. The diameter of the driving pulley 53 is smaller than that of the driven pulley 55. When rotating, the angular velocity of the driven pulley 55 is smaller than that of the driving pulley 53. That is, when the driving pulley 53 rotates very fast, the rotation speed of the driven pulley 55 will not be too fast. In this way, the first motor 51 can better control the rotation amplitude of the driven pulley 55.

[0024] refer to Figure 11-13As shown, the second drive mechanism 6 in the illustrated embodiment includes a second mounting base 61, a second motor 62, a trapezoidal lead screw 63, a lead screw nut 64, a drive mounting base 65, and a linear guide shaft 66. The second motor 62 is mounted on the second mounting base 61. One end of the trapezoidal lead screw 63 is fixedly connected to the output shaft of the second motor 62, and the other end of the trapezoidal lead screw 63 is mounted on the second mounting base 61 via a bearing 67. The lead screw nut 64 is screwed onto the trapezoidal lead screw 63. Both ends of the linear guide shaft 66 are fixedly mounted on the second mounting base 61. The linear guide shaft 66 is parallel to the trapezoidal lead screw 63, and a linear guide bearing is slidably sleeved on the linear guide shaft 66. The drive mounting base 65 is fixedly sleeved on the lead screw nut 64 and the linear guide bearing. Due to the restriction of the linear guide shaft 66, the first mounting base 57 cannot rotate and moves vertically up and down along the trapezoidal lead screw 63. In the illustrated embodiment, there are two sets of linear guide shafts 66. In other embodiments, the second drive mechanism 6 may also employ other linear motion drive mechanisms such as hydraulic cylinders, push rod motors, and rack and pinion mechanisms. (See reference) Figure 8 As shown, a baffle 651 is mounted on the drive mounting base 65 in the illustrated embodiment, and a first slotted photoelectric sensor 652 and a second slotted photoelectric sensor 653 that match the baffle 651 are mounted on the second mounting base 61. When the second motor 62 drives the drive mounting base 65 to move linearly back and forth, the baffle 651 can move into the U-shaped slot of the first slotted photoelectric sensor 652 and the U-shaped slot of the second slotted photoelectric sensor 653, thereby detecting the initial position and the end position of the movement of the first clamping mechanism 3 and the second clamping mechanism 4.

[0025] refer to Figure 3-9As shown, the hanging pin 2 passes through the mounting plate 1 and is mounted to the sensing end of the load cell 7 via the connecting member 72. The load cell 7 is mounted on the first mounting member 12 and located on the first side of the mounting plate 1. The first mounting base 57 includes a second mounting member 571, a third mounting member 572, a connecting plate 573, and a fourth mounting member 574. The first motor 51, drive shaft 52, and drive pulley 53 are mounted on the third mounting member 572. The driven shaft 56 is mounted on the fourth mounting member 574, and the driven pulley 55 and drive gear 81 are mounted on the fourth mounting member 574 via the driven shaft 56. The driven gear 82 is mounted on the fourth mounting member 574 via the second mounting member 571. The third mounting member 572 is connected to the fourth mounting member 574 via the connecting plate 573. The third mounting member 572, the connecting plate 573, the fourth mounting member 574, the first drive mechanism 5, and the second drive mechanism 6 are located on the first side of the mounting plate 1. Driven shaft 56 and second mounting member 571 penetrate mounting plate 1. First clamping mechanism 3, second clamping mechanism 4, driving gear 81, and driven gear 82 are located on the second side of mounting plate 1. Second drive mechanism 6 is fixedly connected to mounting plate 1 via second connecting block 68. That is, hanging pin 2 is indirectly mounted on mounting plate 1, first clamping mechanism 3 and second clamping mechanism 4 are indirectly mounted on mounting plate 1, first drive mechanism 5 is indirectly mounted on mounting plate 1, and second drive mechanism 6 is directly mounted on mounting plate 1.

[0026] This application also provides a blood component separator, including a liftable blood bag stopper device according to any of the above embodiments, wherein the mounting plate 1 is the front side plate of the blood component separator body.

[0027] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural modifications made based on the concept of this utility model and the description and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A height-adjustable blood bag stopper opening device, characterized in that, The device includes a mounting plate and a hanging pin mounted on the mounting plate, a first clamping mechanism, a second clamping mechanism, a first driving mechanism, and a second driving mechanism. The hanging pin matches the hanging hole of an external blood bag. The first clamping mechanism and the second clamping mechanism are positioned opposite each other and spaced apart. The first clamping mechanism is used to clamp the rigid tube of the external blood bag, and the second clamping mechanism is used to clamp the stopper rod inside the flexible tube through the flexible tube of the external blood bag. The first driving mechanism is driven to the second clamping mechanism to drive the second clamping mechanism to reciprocate and rotate to break the stopper rod. The second driving mechanism is driven to the first clamping mechanism and the second clamping mechanism to drive the first clamping mechanism and the second clamping mechanism to move synchronously away from or towards the hanging pin.

2. The liftable blood bag stopper device as described in claim 1, characterized in that, It also includes a weighing sensor, which is mounted on the mounting plate, and the hanging pin is mounted on the sensing end of the weighing sensor.

3. The liftable blood bag stopper device as described in claim 1, characterized in that, It also includes a transmission mechanism, through which the first driving mechanism is connected to the first clamping mechanism to drive the first clamping mechanism to rotate in opposite directions relative to the second clamping mechanism.

4. The liftable blood bag stopper device as described in claim 1, characterized in that, Both the first clamping mechanism and the second clamping mechanism include two clamping arms.

5. The liftable blood bag stopper device as described in claim 3, characterized in that, The first drive mechanism includes a first mounting base, a first motor, a drive shaft, a drive pulley, a belt, a driven pulley, and a driven shaft. The first motor is fixedly mounted on the first mounting base. The output shaft of the first motor is connected to one end of the drive shaft via a coupling. The drive shaft is mounted on the first mounting base via ball bearings. The other end of the drive shaft is connected to the drive pulley. The driven shaft is mounted on the first mounting base via ball bearings. One end of the driven shaft is fixedly connected to the driven pulley. The other end of the driven shaft is fixedly connected to the second clamping mechanism. The surface of the drive pulley and the surface of the driven pulley are connected by the belt drive. The diameter of the drive pulley is smaller than the diameter of the driven pulley. The transmission mechanism includes a driving gear and a driven gear. The second clamping mechanism is mounted on the driving gear. The driving gear is fixedly connected to the driven shaft. The driven gear is rotatably mounted on the first mounting base. The driving gear meshes with the driven gear. The first clamping mechanism is mounted on the driven gear.

6. The liftable blood bag stopper device as described in claim 1, characterized in that, The second drive mechanism includes a second mounting base, a second motor, a trapezoidal lead screw, a lead screw nut, a drive mounting base, and a linear guide shaft. The second motor is mounted on the second mounting base. One end of the trapezoidal lead screw is fixedly connected to the output shaft of the second motor, and the other end of the trapezoidal lead screw is mounted on the second mounting base via a bearing. The lead screw nut is screwed onto the trapezoidal lead screw. Both ends of the linear guide shaft are fixedly mounted on the second mounting base. The linear guide shaft is parallel to the trapezoidal lead screw, and a linear guide bearing is slidably sleeved on the linear guide shaft. The drive mounting base is fixedly sleeved on the lead screw nut and the linear guide bearing. The first drive mechanism includes a first mounting base. The first clamping mechanism and the second clamping mechanism are mounted on the first mounting base. The first mounting base is mounted on the drive mounting base, and the second drive mechanism is fixedly mounted on the mounting plate.

7. The liftable blood bag stopper device as described in claim 6, characterized in that, A baffle is installed on the drive mounting base, and a first slotted photoelectric sensor and a second slotted photoelectric sensor that match the baffle are installed on the second mounting base. When the second motor drives the drive mounting base to move linearly back and forth, the baffle can move into the U-shaped slot of the first slotted photoelectric sensor and the U-shaped slot of the second slotted photoelectric sensor.

8. The liftable blood bag stopper device as described in claim 2, characterized in that, The hanging pin passes through the mounting plate, and the hanging pin is installed on the sensing end of the weighing sensor through a connector. The weighing sensor is installed on and located on the first side of the mounting plate through a first mounting component.

9. The liftable blood bag stopper device as described in claim 5, characterized in that, The first mounting base includes a second mounting member, a third mounting member, a connecting plate, and a fourth mounting member. The first motor, the drive shaft, and the drive pulley are mounted on the third mounting member. The driven shaft is mounted on the fourth mounting member. The driven pulley and the drive gear are mounted on the fourth mounting member via the driven shaft. The driven gear is mounted on the fourth mounting member via the second mounting member. The third mounting member is connected to the fourth mounting member via the connecting plate. The third mounting member, the connecting plate, the fourth mounting member, the first drive mechanism, and the second drive mechanism are located on a first side of the mounting plate. The driven shaft and the second mounting member penetrate the mounting plate. The first clamping mechanism, the second clamping mechanism, the drive gear, and the driven gear are located on a second side of the mounting plate.

10. A blood component separator, characterized in that, Includes the liftable blood bag stopper as described in any one of claims 1 to 9, wherein the mounting plate is the front side plate of the blood component separator.

Images