Adjustable blood bag unpinning device and blood component separator

Abstract

The utility model provides a kind of adjustable blood bag bares plug device and blood component separator, blood bag bares plug device including mounting plate and first clamping mechanism, second clamping mechanism, first driving mechanism and second driving mechanism being installed on mounting plate, first clamping mechanism and second clamping mechanism are oppositely and interval arrangement, first clamping mechanism is used to clamp the hard pipe of external blood bag, second clamping mechanism is used to clamp the plug rod in the inside of hose across the hose of external blood bag, first driving mechanism is driven connection with second clamping mechanism to drive second clamping mechanism reciprocating rotation to break plug rod, second driving mechanism is driven connection with second clamping mechanism to drive second clamping mechanism away from or close to first clamping mechanism.Blood component separator includes adjustable blood bag bares plug device, movable extrusion plate and third driving mechanism.The present application can adapt to different brand specifications of blood bag, realize automatic bares plug, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment, and in particular to an adjustable 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 current market as mentioned in the background art above, and to provide an adjustable 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 an adjustable blood bag stopper breaking device, including: a mounting plate and a first clamping mechanism, a second clamping mechanism, a first driving mechanism, and a second driving mechanism mounted on the mounting plate. The first clamping mechanism and the second clamping mechanism are arranged opposite to each other and spaced apart. The first clamping mechanism is used to clamp the rigid tube of the outer blood bag, and the second clamping mechanism is used to clamp the stopper rod inside the flexible tube through the flexible tube of the outer 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 second clamping mechanism to drive the second clamping mechanism to move away from or closer to the first clamping mechanism.

[0006] In some embodiments, the first clamping mechanism is fixedly mounted on the mounting plate, the second clamping mechanism is mounted on the output end of the first driving mechanism, the first driving mechanism is mounted on the output end of the second driving mechanism, and the second driving mechanism is fixedly mounted on the mounting plate.

[0007] In some embodiments, both the first clamping mechanism and the second clamping mechanism include two clamping arms.

[0008] In some embodiments, the first drive mechanism includes a first mounting base, a first motor, a drive gear, a driven gear, and a driven shaft. The first motor is fixedly mounted on the first mounting base, the drive gear is connected to the output shaft of the first motor, 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 gear, and the other end of the driven shaft is fixedly connected to a second clamping mechanism. The drive gear and the driven gear mesh directly, or the drive gear meshes with the driven gear through a transmission mechanism. The diameter of the drive gear is smaller than the diameter of the driven gear.

[0009] In some embodiments, the transmission mechanism includes a first transmission gear, a second transmission gear, and a transmission shaft. The transmission shaft is mounted on a first mounting base via ball bearings. The first transmission gear and the second transmission gear are coaxially fixed and mounted on the transmission shaft. The first transmission gear meshes with a driving gear, and the second transmission gear meshes with a driven gear. The diameter of the second transmission gear is smaller than the diameter of the first transmission gear, the diameter of the driving gear is smaller than the diameter of the first transmission gear, and the diameter of the second transmission gear is smaller than the diameter of the driven gear.

[0010] In some embodiments, the second drive mechanism includes a second mounting base, a second motor, a ball screw, a 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 ball screw is fixedly connected to the output shaft of the second motor, and the other end of the ball screw is mounted on the second mounting base via a bearing. The screw nut is screwed onto the ball 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 ball screw, and a linear guide bearing is slidably sleeved on the linear guide shaft. The drive mounting base is fixedly sleeved on the screw nut and the linear guide bearing. The first drive mechanism is fixedly mounted on the drive mounting base, and the second mounting base is fixedly mounted on the 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 to the middle of the U-shaped slot of the first slotted photoelectric sensor and the middle of the U-shaped slot of the second slotted photoelectric sensor.

[0012] This embodiment also provides a blood component separator, including the adjustable blood bag stopper device of any of the above embodiments, the mounting plate being the fixed squeezing plate of the blood component separator, and further including a movable squeezing plate and a third driving mechanism, the third driving mechanism being drivenly connected to the movable squeezing plate to drive the movable squeezing plate away from or close to the fixed squeezing plate.

[0013] The beneficial effects of this application are as follows: The second clamping mechanism of the blood bag stoppering device in this embodiment can be far away from or close to the first clamping mechanism, that is, the distance between the first clamping mechanism and the second clamping mechanism is adjustable, so that the root of the stopper rod of blood bags of different brands and specifications can fall between the first clamping mechanism and the second clamping mechanism, realizing automatic stoppering. The blood bag stoppering device and blood component separator of this embodiment can adapt to blood bags of different brands and specifications, reduce the workload of staff, and improve work efficiency. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the adjustable blood bag stopper device of this application;

[0016] Figure 2 for Figure 1 Another structural schematic diagram of the adjustable blood bag stopper device;

[0017] Figure 3 for Figure 1 Exploded view of the adjustable blood bag stopper device;

[0018] Figure 4 for Figure 1 A schematic diagram of the adjustable blood bag stopper device without a mounting plate;

[0019] Figure 5 for Figure 1 A schematic diagram of the first drive mechanism without the first mounting base in the adjustable blood bag stopper device;

[0020] Figure 6 for Figure 1 A schematic diagram of the second drive mechanism in the adjustable blood bag stopper device;

[0021] Figure 7 for Figure 6 A schematic diagram of the second drive mechanism from another perspective;

[0022] Figure 8 for Figure 6 Exploded view of the second drive mechanism in the adjustable blood bag stopper device;

[0023] Figure 9This is a diagram showing the usage state of a portion of the structure of an embodiment of the blood component separator of this application. Detailed Implementation

[0024] 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.

[0025] 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. When blood bags 100 of different brands and specifications are fixedly hung on the hanging needle, 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.

[0026] refer to Figure 1-3As shown in Figure 9, the adjustable blood bag stopper breaking device in the illustrated embodiment includes a mounting plate 1 and a first clamping mechanism 2, a second clamping mechanism 3, a first driving mechanism 4, and a second driving mechanism 5 mounted on the mounting plate 1. Both the first clamping mechanism 2 and the second clamping mechanism 3 include two clamping arms. The first clamping mechanism 2 and the second clamping mechanism 3 are arranged opposite to each other and spaced apart. The first clamping mechanism 2 is used to clamp the rigid tube 101 of the outer blood bag 100, and the second clamping mechanism 3 is used to clamp the stopper rod 103 inside the flexible tube 102 of the outer blood bag 100 through it. The first driving mechanism 4 is driven to the second clamping mechanism 3 to drive the second clamping mechanism 3 to reciprocate and rotate to break the stopper rod 103. The second driving mechanism 5 is driven to the second clamping mechanism 3 to drive the second clamping mechanism 3 away from or towards the first clamping mechanism 2. In use, the blood bag 100 is placed on the mounting plate 1, and the rigid tube 101 of the blood bag 100 is inserted into the clamping port of the first clamping mechanism 2. When the rigid tube 101 of the blood bag 100 is too long (at this time, the clamping port of the second clamping mechanism 3 is also located at the rigid tube 101), the second driving mechanism 5 needs to be controlled to drive the second clamping mechanism 3 to move away from the first clamping mechanism 2, so that the second clamping mechanism 3 clamps the stopper rod 103 inside the tubing 102 of the outer blood bag 100 through the tubing 102. The root of the stopper rod 103 rests between the first clamping mechanism 2 and the second clamping mechanism 3. At this time, the reciprocating rotation of the second clamping mechanism 3 can break the stopper rod 103 from its root. Since the distance between the first clamping mechanism and the second clamping mechanism of the blood bag stopper breaking device in this embodiment is adjustable, it can adapt to blood bags 100 of different brands and specifications, realize automatic stopper breaking, reduce the workload of staff, and improve work efficiency.

[0027] refer to Figure 4 In the illustrated embodiment, the first clamping mechanism 2 is directly fixedly mounted on the mounting plate 1. In use, the rigid tube 101 of the blood bag 100 is inserted into the clamping opening of the first clamping mechanism 2. The second clamping mechanism 3 is indirectly mounted on the mounting plate 1 via the first driving mechanism 4 and the second driving mechanism 5. Specifically, the second clamping mechanism 3 is mounted at the output end (i.e., the driven shaft 45) of the first driving mechanism 4. The first driving mechanism 4 drives the second clamping mechanism 3 to reciprocate and rotate to break the stopper rod 103. The first driving mechanism 4 is mounted at the output end (i.e., the drive mounting base 55) of the second driving mechanism 5. The second driving mechanism 5 drives the first driving mechanism 4 to move, causing the second clamping mechanism 3 to move away from or closer to the first clamping mechanism 2. The second driving mechanism 5 is fixedly mounted on the mounting plate 1.

[0028] refer to Figure 4 and Figure 5As shown, the first drive mechanism 4 in the illustrated embodiment includes a first mounting base 41, a first motor 42, a drive gear 43, a driven gear 44, and a driven shaft 45. The first motor 42 is fixedly mounted on the first mounting base 41. The drive gear 43 is connected to the output shaft of the first motor 42. The driven shaft 45 is rotatably mounted on the first mounting base 41 via ball bearings. One end of the driven shaft 45 is fixedly connected to the driven gear 44, and the other end of the driven shaft 45 is fixedly connected to the second clamping mechanism 3. The drive gear 43 and the driven gear 44 mesh directly, or the drive gear 43 meshes with the driven gear 44 through a transmission mechanism 46. In the illustrated embodiment, the drive gear 43 meshes with the driven gear 44 through the transmission mechanism 46. The transmission mechanism 46 in this embodiment includes a first transmission gear 461, a second transmission gear 462, and a transmission shaft 463. The transmission shaft 463 is mounted on a first mounting base 41 via ball bearings. The first transmission gear 461 and the second transmission gear 462 are coaxially fixed and mounted on the transmission shaft 463. The first transmission gear 461 meshes with the driving gear 43, and the second transmission gear 462 meshes with the driven gear 44. The diameter of the second transmission gear 462 is smaller than the diameter of the first transmission gear 461, the diameter of the driving gear 43 is smaller than the diameter of the first transmission gear 461, the diameter of the second transmission gear 462 is smaller than the diameter of the driven gear 44, and the diameter of the driving gear 43 is smaller than the diameter of the driven gear 44. When rotating, the angular velocity of the first transmission gear 461 is less than the angular velocity of the driving gear 43, and the angular velocity of the first transmission gear 461 is equal to the angular velocity of the second transmission gear 462. The angular velocity of the driven gear 44 is less than the angular velocity of the second transmission gear 462. Therefore, after two layers of deceleration, when the driving gear 43 rotates very fast, the rotation speed of the driven gear 44 will not be too fast. In this way, the first motor 42 can better control the rotation amplitude of the driven gear 44.

[0029] refer to Figure 6-8As shown in the illustrated embodiment, the second drive mechanism 5 includes a second mounting base 51, a second motor 52, a ball screw 53, a screw nut 54, a drive mounting base 55, and a linear guide shaft 56. The second motor 52 is mounted on the second mounting base 51. One end of the ball screw 53 is fixedly connected to the output shaft of the second motor 52, and the other end of the ball screw 53 is mounted on the second mounting base 51 via a bearing. The screw nut 54 is screwed onto the ball screw 53. Both ends of the linear guide shaft 56 are fixedly mounted on the second mounting base 51. The linear guide shaft 56 is parallel to the ball screw 53, and a linear guide bearing is slidably sleeved on the linear guide shaft 56. The drive mounting base 55 is fixedly sleeved on the screw nut 54 and the linear guide bearing. The first drive mechanism 4 is fixedly mounted on the drive mounting base 55, and the second mounting base 51 is fixedly mounted on the mounting plate 1. In the illustrated embodiment, the first mounting base 41 of the first drive mechanism 4 is fixedly mounted on the drive mounting base 55. Due to the constraint of the linear guide shaft 56, the first mounting base 41 cannot rotate along the ball screw 53 and thus moves linearly. In the illustrated embodiment, there are two sets of linear guide shafts 56. In other embodiments, the second drive mechanism 5 may also employ other linear motion drive mechanisms such as hydraulic cylinders, push rod motors, and rack and pinion mechanisms.

[0030] refer to Figure 6 As shown, in the illustrated embodiment, a baffle 551 is installed on the drive mounting base 55, and a first slotted photoelectric sensor 552 and a second slotted photoelectric sensor 553 that match the baffle 551 are installed on the second mounting base 51. When the second motor 52 drives the drive mounting base 55 to move linearly back and forth, the baffle 551 can move to the middle of the U-shaped slot of the first slotted photoelectric sensor 552 and the middle of the U-shaped slot of the second slotted photoelectric sensor 553, thereby detecting the initial position and the end position of the movement of the first clamping mechanism 2 and the second clamping mechanism 3.

[0031] This application also provides a blood component separator, including the adjustable blood bag stopper device in the above embodiment, the mounting plate 1 is the fixed squeezing plate 1 of the blood component separator, and also includes a movable squeezing plate 6 and a third drive mechanism (not shown in the figure). The third drive mechanism is driven to connect with the movable squeezing plate 6 to drive the movable squeezing plate 6 away from or close to the fixed squeezing plate 1.

[0032] 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. An adjustable blood bag stopper opening device, characterized in that, The device includes a mounting plate and a first clamping mechanism, a second clamping mechanism, a first driving mechanism, and a second driving mechanism mounted on the mounting plate. The first clamping mechanism and the second clamping mechanism are arranged 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 tubing through the tubing 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 second clamping mechanism to drive the second clamping mechanism away from or towards the first clamping mechanism.

2. The adjustable blood bag stopper device as described in claim 1, characterized in that, The first clamping mechanism is fixedly installed on the mounting plate, the second clamping mechanism is installed at the output end of the first driving mechanism, the first driving mechanism is installed at the output end of the second driving mechanism, and the second driving mechanism is fixedly installed on the mounting plate.

3. The adjustable blood bag stopper device as described in claim 2, characterized in that, Both the first clamping mechanism and the second clamping mechanism include two clamping arms.

4. The adjustable blood bag stopper device as described in claim 1, characterized in that, The first drive mechanism includes a first mounting base, a first motor, a drive gear, a driven gear, and a driven shaft. The first motor is fixedly mounted on the first mounting base. The drive gear is connected to the output shaft of the first motor. 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 gear, and the other end of the driven shaft is fixedly connected to the second clamping mechanism. The drive gear directly meshes with the driven gear, or the drive gear meshes with the driven gear through a transmission mechanism. The diameter of the drive gear is smaller than the diameter of the driven gear.

5. The adjustable blood bag stopper device as described in claim 4, characterized in that, The transmission mechanism includes a first transmission gear, a second transmission gear, and a transmission shaft. The transmission shaft is mounted on the first mounting base via ball bearings. The first transmission gear and the second transmission gear are coaxially fixed and mounted on the transmission shaft. The first transmission gear meshes with the driving gear, and the second transmission gear meshes with the driven gear. The diameter of the second transmission gear is smaller than the diameter of the first transmission gear, the diameter of the driving gear is smaller than the diameter of the first transmission gear, and the diameter of the second transmission gear is smaller than the diameter of the driven gear.

6. The adjustable blood bag stopper device as described in claim 2, characterized in that, The second drive mechanism includes a second mounting base, a second motor, a ball screw, a 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 ball screw is fixedly connected to the output shaft of the second motor, and the other end of the ball screw is mounted on the second mounting base via a bearing. The screw nut is screwed onto the ball 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 ball screw, and a linear guide bearing is slidably sleeved on the linear guide shaft. The drive mounting base is fixedly sleeved on the screw nut and the linear guide bearing. The first drive mechanism is fixedly mounted on the drive mounting base, and the second mounting base is fixedly mounted on the mounting plate.

7. The adjustable 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 to the middle of the U-shaped slot of the first slotted photoelectric sensor and the middle of the U-shaped slot of the second slotted photoelectric sensor.

8. A blood component separator, characterized in that, The device includes an adjustable blood bag stopper as described in any one of claims 1 to 7, wherein the mounting plate is a fixed squeezing plate of the blood component separator, and further includes a movable squeezing plate and a third driving mechanism, wherein the third driving mechanism is drivenly connected to the movable squeezing plate to drive the movable squeezing plate away from or closer to the fixed squeezing plate.

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