A clinical blood treatment device

Abstract

The application discloses a clinical blood treatment device, belongs to the technical field of medical consumables, and is used for solving the problems of wasting manpower and limited blood transfusion speed caused by the mode of performing emergency blood transfusion on patients by manually extruding and lifting blood bags. The clinical blood treatment device comprises a box body, the box body is internally provided with a placing cavity, the placing cavity is used for placing a blood bag, a door body for closing the placing cavity is arranged on the box body, and a through hole for a blood transfusion tube to pass through is arranged on the side wall of the box body. The clinical blood treatment device further comprises an air pump arranged on the box body and used for providing an air source. The clinical blood treatment device extrudes the blood bag by changing the pressure in the placing cavity to realize rapid blood transfusion, avoids the problem of unreasonable blood transfusion speed caused by the mode of manually extruding the blood bag and the difficulty in controlling the pressing force, and also avoids the problem of limited blood transfusion speed caused by the mode of lifting the blood bag.

Description

Technical Field

[0001] This invention relates to the field of medical consumables technology, specifically to a clinical blood processing device. Background Technology

[0002] In cases of massive blood loss due to external trauma, impact injury, or severe injury, where the patient may be in life-threatening danger due to excessive blood loss, or in cases of unexpected massive bleeding during surgery where the patient may gradually lose consciousness, it is necessary to provide the patient with a rapid blood transfusion in a timely manner to prevent organ failure and save the patient's life.

[0003] When encountering patients requiring emergency blood transfusions in clinical practice, emergency transfusions are usually performed by manually squeezing and elevating the blood bag. However, it is difficult for medical staff to control the pressure applied by hand, resulting in transfusions that are too fast or too slow. Elevating the blood bag can only increase the transfusion speed to a limited extent. Therefore, the above-mentioned existing methods are clearly insufficient for patients requiring emergency blood transfusions and, in emergency situations, consume some of the human resources of medical staff. Therefore, a clinical blood processing device is designed. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems in the prior art. The clinical blood processing device provided achieves rapid blood transfusion by changing the pressure inside the placement cavity to squeeze the blood bag. This avoids the problem of unreasonable blood transfusion speed caused by medical staff manually pressing the blood bag, which is difficult to control due to the pressure. It also avoids the problem of limited blood transfusion speed caused by raising the blood bag.

[0005] This invention provides a clinical blood processing device including a housing with a placement cavity for holding blood bags. The housing has a door for closing the placement cavity, and the side wall of the housing has a perforation for transfusion tubing to pass through. The device also includes an air pump and a three-way valve. The air pump is mounted on the housing and provides an air source. The three-way valve has three ports, two of which are connected to the air outlet of the air pump and the placement cavity, respectively, to inflate the blood bag into the placement cavity and compress it. The third port is equipped with a solenoid valve for deflating the air.

[0006] Preferably, the top of the placement cavity is provided with a first rotary power component for shaking the blood bag, the output shaft of the first rotary power component is vertically downward, and a hook is fixedly provided on the output shaft of the first rotary power component for suspending the blood bag; the bottom of the placement cavity is provided with two tension springs, which are located on both sides of the perforation, and each tension spring is hung on the bottom hanging hole of the blood bag.

[0007] Preferably, a fixed cylinder is provided at the top of the placement cavity, the first rotary power component is fixedly connected to the inner wall of the fixed cylinder, and at least two movable arms are evenly provided at the bottom of the outer wall of the fixed cylinder. The blood bag is squeezed by controlling the two movable arms to move closer to or further away from each other.

[0008] Preferably, each of the movable arms includes a rod and a first pull rope; the end of the rod is rotatably connected to the outer wall of the fixed cylinder; the first pull rope is connected to the rod, and by pulling the first pull rope, the rod is rotated toward the center below the fixed cylinder to squeeze the blood bag; the inner wall of the fixed cylinder and the outer wall of the first rotary power component are fixedly connected by a ring body, and the end face of the ring body is provided with a plurality of thread holes, the number of thread holes being the same as the number of movable arms; each of the first pull ropes passes through the thread hole provided on the fixed cylinder and then through the corresponding thread hole; all the first pull ropes are connected to one end of the main rope, and the movable arm is rotated by pulling the other end of the main rope.

[0009] Preferably, each of the rods has a sliding hole on its end face away from the fixed cylinder. A sliding rod is slidably disposed in the sliding hole. One end of a second pull rope is connected to the end of the sliding rod located in the sliding hole. The other end of the second pull rope passes through a side hole provided on the rod and passes through the corresponding wire hole and the wire threading hole in sequence, and is fixedly connected to the main rope.

[0010] Preferably, both the outer side of the rod and the end of the slide bar are provided with baffles, and the two baffles are respectively connected to the two ends of the first return spring.

[0011] Preferably, a fixed pulley is fixedly installed at the top of the placement cavity, and the main rope is wound on the fixed pulley. The main rope passes through a through hole in the side wall of the placement cavity and is connected to the output shaft of the winding motor. The winding motor is fixedly installed on the box body.

[0012] Preferably, a plurality of second return springs are evenly provided on the outer periphery of the fixed cylinder, and the two ends of each second return spring are respectively connected to the cylinder wall of the fixed cylinder and a rod to push the rod to return to its original position.

[0013] Preferably, each of the wire holes, the side holes, and the through holes is fixedly provided with a wire block, and each wire block has a limiting arc groove for reducing friction.

[0014] Preferably, two adjacent slide bars are connected by an arc spring so that the two adjacent slide bars maintain the same angle.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. When a patient requires an emergency large-volume blood transfusion, place the blood bag in the placement chamber, pass the transfusion tubing through the perforation, and insert it onto the blood bag. After closing the door, a relatively sealed state is formed in the placement chamber (at this time, the solenoid valve is in the closed state by default). Control the air pump to work, and the air pump will send air into the placement chamber through the three-way valve. The air pressure in the placement chamber increases, causing the blood bag to deflate under the air pressure, thus achieving rapid blood transfusion. When it is necessary to quickly reduce the blood transfusion rate, control the solenoid valve to open to release pressure. When it is necessary to stop rapid blood transfusion, simply turn off the air pump.

[0016] 2. This clinical blood transfusion device achieves rapid transfusion by changing the pressure inside the placement chamber to squeeze the blood bag. This avoids the problem of unreasonable transfusion speed caused by medical staff manually pressing the blood bag, which is difficult to control the pressure. It also avoids the problem of limited transfusion speed caused by raising the blood bag. This clinical blood transfusion device is suitable for large-volume transfusion of patients in emergency situations, which can avoid the problem of insufficient medical staff and save human resources. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 for Figure 1 Sectional view at point AA; Figure 3 for Figure 2 A magnified view of a portion of the image; Figure 4 for Figure 1 A schematic diagram of the structure with the box removed; Figure 5 for Figure 4 A schematic diagram of the structure with the fixed cylinder removed; Figure 6 for Figure 5 A sectional view; Figure 7 This is a schematic diagram of the ring structure; Figure 8 This is a cross-sectional view of the movable arm; Figure 9 A schematic diagram showing the cooperation between the baffle and the first reset spring; Figure 10 This is a schematic diagram of the structure of an arc spring; Figure 11 This is a schematic diagram of the conductor block structure; Figure 12 This is a schematic diagram of the tension spring structure; Figure 13 This is a schematic diagram of the fixed cylinder structure; Figure 14 This is a schematic diagram of the tee structure; Figure 15This is a schematic diagram of a fixed pulley. Figure 16 This is a schematic diagram of the modeling of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Box body, 2. Placement cavity, 3. Door, 4. Perforation, 5. Air pump, 6. T-junction, 7. First rotational power component, 8. Hook, 9. Fixed cylinder, 10. Movable arm, 11. Rod, 12. First pull rope, 13. Ring body, 14. Threading hole, 15. Main rope, 16. Sliding hole, 17. Sliding rod, 18. Second pull rope, 19. Baffle, 20. First return spring, 21. Second return spring, 22. Fixed pulley, 23. Winding motor, 24. Wire block, 25. Limiting arc groove, 26. Arc spring, 27. Tension spring, 28. Bracket, 29. Detection end. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. Words such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “inner,” “outer,” “upper,” “lower,” “far,” “near,” “front,” and “back” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0021] The accompanying drawings in this invention are not strictly drawn to scale; the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this invention are merely structural schematic diagrams; see details below. Figures 1-16 . First Embodiment

[0022] The present invention provides a clinical blood processing device comprising a housing 1, wherein the housing 1 has a placement cavity 2 for placing blood bags, and the housing 1 is provided with a door 3 for closing the placement cavity 2. The side wall of the housing 1 is provided with a perforation 4 for transfusion tubes to pass through. The clinical blood processing device also includes an air pump 5 and a three-way valve 6; the air pump 5 is provided on the housing 1 for providing an air source; the three-way valve 6 has three openings, two of which are respectively connected to the air outlet of the air pump 5 and the placement cavity 2, for inflating the blood bag into the placement cavity 2 and squeezing it, and the third opening is provided with a solenoid valve for deflating the blood bag.

[0023] When a patient requires an emergency large-volume blood transfusion, the blood bag is placed in placement chamber 2, the transfusion tube passes through perforation 4 and is inserted into the blood bag. After closing door 3, a relatively sealed state is formed in placement chamber 2 (at this time, the solenoid valve is in the closed state by default). The air pump 5 is controlled to work, and the air pump sends air into placement chamber 2 through three-way valve 6. The air pressure in placement chamber 2 increases, causing the blood bag to deflate under air pressure, thus achieving rapid blood transfusion. When it is necessary to quickly reduce the blood transfusion rate, the solenoid valve is controlled to open to release pressure. When it is necessary to stop rapid blood transfusion, the air pump 5 is turned off. During this process, there is a gap between the transfusion tube and perforation 4. The gap allows the transfusion tube to be quickly inserted and removed, but it does not have a sealing effect. When the air pump 5 pumps a large enough volume of air, the amount of gas leaking through the gap is negligible.

[0024] This clinical blood transfusion device achieves rapid transfusion by changing the pressure within placement chamber 2 to squeeze the blood bag. This avoids the problem of unreasonable transfusion speed caused by medical staff manually pressing the blood bag, which is difficult to control due to the pressure. It also avoids the problem of limited transfusion speed caused by raising the blood bag. This clinical blood transfusion device is suitable for large-volume transfusions for patients in emergency situations, avoiding the problem of insufficient medical staff and saving human resources.

[0025] An improvement was made based on the first embodiment, and this is taken as the second embodiment.

[0026] The top of the placement cavity 2 is equipped with a first rotary power component 7 for shaking the blood bag. This component 7 drives the top of the blood bag to rotate, causing it to twist while the bottom remains stationary, thus agitating the blood inside and preventing thrombosis. In this embodiment, the first rotary power component 7 is a motor, with its output shaft pointing vertically downwards. A hook 8 is fixedly mounted on the output shaft for suspending the blood bag. Two tension springs 27 are located at the bottom of the placement cavity 2, on either side of the perforation 4, and each spring is hooked onto a hanging hole at the bottom of the blood bag.

[0027] When emergency large-volume blood transfusions are not required, and patients receive normal blood transfusions under normal circumstances, the blood's tendency to clot and form thrombi can easily lead to complications after being transfused into the patient's body. Therefore, the above-mentioned structure was designed. The housing 1 is fixed to the top of the bracket 28. In use, the top of the blood bag is hung on the hook 8, and a tension spring 27 is attached to the hanging holes on both sides of the blood bag. Under the action of the hook 8 and the two tension springs 27, the blood bag is in a relatively tense state. At this time, the first rotary power component 7 is controlled to rotate reciprocally. The first rotary power component 7 drives the blood bag to twist reciprocally, deforming and squeezing the blood bag to agitate the blood inside, preventing thrombus formation and protecting the patient's health.

[0028] Furthermore, a fixed cylinder 9 is provided at the top of the placement cavity 2. The first rotary power component 7 is fixedly connected to the inner wall of the fixed cylinder 9. At least two movable arms 10 are evenly provided at the bottom of the outer wall of the fixed cylinder 9. The top of the movable arms 10 is hinged to the fixed cylinder 9. The blood bag can be squeezed by controlling the bottoms of the multiple movable arms 10 to move closer or further away from each other.

[0029] However, in normal blood transfusions, rotating and shaking the blood bag cannot reverse the blood flow at both ends, resulting in insufficient blood flow. Therefore, the above structure was designed.

[0030] After the first rotary power component 7 reciprocates for a period of time, the first rotary power component 7 stops rotating, and then controls each movable arm 10 to move simultaneously. Each movable arm 10 rotates towards the blood bag and squeezes the blood bag. Then, each movable arm 10 rotates in the opposite direction and moves away from the blood bag. During the reciprocating rotation of each movable arm 10, the blood in the blood bag is compressed and moved, so that the blood sloshes more fully in the blood bag, which can effectively avoid blood clots. The preferred number of movable arms 10 is 6.

[0031] Furthermore, each of the movable arms 10 includes a rod 11 and a first pull rope 12; the end of the rod 11 is rotatably connected to the outer wall of the fixed cylinder 9; one end of the first pull rope 12 is connected to the rod 11, and by pulling the other end of the first pull rope 12, the rod 11 is rotated toward the center below the fixed cylinder 9 to squeeze the blood bag; the inner wall of the fixed cylinder 9 is fixedly connected to the outer wall of the first rotary power component 7 through a ring 13, and the end face of the ring 13 is provided with a plurality of thread holes 14, the number of thread holes 14 being the same as the number of movable arms 10; each of the first pull ropes 12 passes through the thread hole provided on the fixed cylinder 9 and then through the corresponding thread hole 14; the end of all the first pull ropes 12 away from the rod 11 is connected to one end of the main rope 15, and the movable arm 10 is rotated by pulling the other end of the main rope 15.

[0032] To achieve simultaneous rotation of all rods 11 toward the blood bag, pull the main rope 15, causing it to move away from the rods 11. Driven by the main rope 15, each first pull rope 12 also moves away from the rods 11, causing all rods 11 to rotate toward the blood bag and compress it. To achieve simultaneous rotation of all rods 11 away from the blood bag, release the main rope 15, causing it to move closer to the rods 11. Driven by the main rope 15, each first pull rope 12 also moves closer to the rods 11. Under the influence of gravity, each rod 11 returns to its vertical position, causing it to rotate away from the blood bag and reset.

[0033] Furthermore, each of the rods 11 has a sliding hole 16 on its end face away from the fixed cylinder 9. A sliding rod 17 is slidably disposed in the sliding hole 16. One end of the sliding rod 17 located in the sliding hole 16 is connected to the end of the second pull rope 18. The other end of the second pull rope 18 passes through the side hole provided on the rod 11 and passes through the corresponding wire hole and the wire threading hole 14 in sequence, and is fixedly connected to the main rope 15.

[0034] Because the ends of the rods 11 approach each other and squeeze the blood bag, only one point of the end of the rod 11 is pressed against the surface of the blood bag, which cannot achieve the maximum squeezing and agitation effect on the blood. Therefore, the above structure is designed. When the main rope 15 is pulled, the first pull rope 12 and the second pull rope 18 are tensioned simultaneously. The contraction of the first pull rope 12 allows the end of the slide rod 17 to contact and squeeze the blood bag. The contraction of the second pull rope 18 allows the slide rod 17 to continue moving towards the inside of the sliding hole 16 after squeezing the blood bag. This causes the length of the movable arm 10 to gradually decrease. Under the traction of the main rope 15, the end of the slide rod 17 continues to move upward along the surface of the blood bag, increasing the contact time and contact area of ​​the slide rod 17 on the surface of the blood bag. This makes the blood in the blood bag agitate more fully and effectively avoids the formation of blood clots. Conversely, when the main rope 15 is released, the first pull rope 12 and the second pull rope 18 slack off simultaneously. The slack of the first pull rope 12 causes the end of the slide bar 17 to move away from the blood bag, and the slack of the second pull rope 18 causes the slide bar 17 to move outward within the sliding hole 16, thereby gradually increasing the length of the movable arm 10. Under the influence of gravity, the end of the slide bar 17 continues to move downward along the surface of the blood bag until it detaches from contact with the blood bag.

[0035] Furthermore, baffles 19 are provided on the outside of the rod 11 and at the end of the slide rod 17, and the two baffles 19 are respectively connected to the two ends of the first return spring 20.

[0036] The purpose is to ensure that the second pull rope 18 and the main rope 15 are always in a forward state. Conversely, due to frictional resistance, the slide bar 17 will not slide smoothly in the sliding hole 16. When the second pull rope 18 is tensioned, the first return spring 20 is shortened. When the second pull rope 18 is relaxed, the first return spring 20 is extended.

[0037] The first embodiment mainly suspends the blood bag on the hook 8. The first rotating power component 7 is controlled to make the blood bag vibrate. By synchronously and repeatedly pulling and releasing the first pull rope 12 and the second pull rope 18, the movable arms 10 can squeeze the blood bag. It is suitable for large-volume blood transfusions for patients in emergency situations, and it is also suitable for ordinary blood transfusions. It can avoid the problem of insufficient medical staff, save human resources, and effectively prevent the formation of thrombi.

[0038] An improvement was made based on the second embodiment, which is then presented as the third embodiment.

[0039] A fixed pulley 22 is fixedly installed on the top of the placement cavity 2. The main rope 15 is wound on the fixed pulley 22. The main rope 15 passes through a through hole on the side wall of the placement cavity 2 and is connected to the output shaft of the winding motor 23. The winding motor 23 is fixedly installed on the box body 1.

[0040] The main rope 15 is wound up and tensioned by controlling the forward rotation of the winding motor 23; conversely, the main rope 15 is released and slackened by controlling the reverse rotation of the winding motor 23. The top of the fixed cylinder 9 is provided with a U-shaped channel for connecting to the outside of the placement cavity 2. The main rope 15 is placed in the U-shaped channel, and the U-shaped channel is fixedly connected to the top wall of the placement cavity 2.

[0041] Furthermore, a plurality of second return springs 21 are evenly provided on the outer periphery of the fixed cylinder 9. The two ends of each second return spring 21 are respectively connected to the cylinder wall of the fixed cylinder 9 and a rod 11, so as to push the rod 11 to return to its original position. The second return springs 21 can keep the first pull rope 12 in a taut state, which can avoid the problem of the rod 11 not rotating smoothly on the outer periphery of the fixed cylinder 9.

[0042] Furthermore, each of the wire holes, the side holes, and the through holes is fixedly provided with a wire block 24, and each wire block 24 has a limiting arc groove 25 for reducing friction.

[0043] The first pull rope 12, the second pull rope 18, and the main rope 15 are all set in the corresponding limiting arc grooves 25, which can reduce the friction of the first pull rope 12, the second pull rope 18, and the main rope 15 during the working process, making the movement of the first pull rope 12, the second pull rope 18, and the main rope 15 smoother.

[0044] Furthermore, two adjacent slide rods 17 are connected by an arc spring 26 so that the two adjacent slide rods 17 maintain the same angle.

[0045] As a supplementary design measure, the rotation angles of each slide rod 17 are made the same, while reducing the difference in force on each slide rod 17. An ultrasonic testing device is also installed at the bottom of the housing 1. The detection end 29 of the ultrasonic testing device is located below the perforation 4 and is used to detect air bubbles in the blood. If air bubbles pass through or if there is no blood in the transfusion tube after the transfusion is completed, the ultrasonic testing device will emit an alarm sound; for example, the Xinbai brand, model DK-900 ultrasonic non-destructive testing instrument. If there are temperature requirements for the blood transfused to the patient, the part of the transfusion tube closest to the body is placed in a water bath to heat the blood passing through the transfusion tube at a constant temperature. The suitable water bath temperature is 32℃-38℃, such as using a JTLIANGYOU brand, model HH-W420 electric thermostatic water bath.

[0046] By controlling the forward rotation of the winding motor 23, the synchronous movement of each movable arm 10 is achieved. At the same time, by setting the second reset spring 21, the guide block 24 and the arc spring 26, the stability of this device is improved. In addition, by setting the ultrasonic detection equipment and the water bath, the safety of using this clinical blood processing device is improved.

[0047] The method of using the clinical blood processing device of the present invention is as follows: When performing emergency large-volume blood transfusions on a patient: Place the blood bag in placement chamber 2, pass the transfusion tube through perforation 4 and insert it onto the blood bag, close the door 3 to create a relatively sealed state in placement chamber 2 (at this time, the solenoid valve is in the closed state by default), control the air pump 5 to work, the air pump sends air into placement chamber 2 through the three-way valve 6, the air pressure in placement chamber 2 increases, causing the blood bag to deflate under air pressure, thus achieving rapid blood transfusion; when it is necessary to quickly reduce the blood transfusion rate, control the solenoid valve to open to release pressure, and when it is necessary to stop rapid blood transfusion, simply turn off the air pump 5.

[0048] In non-emergency situations, when performing routine blood transfusions on patients: The top of the blood bag is hung on the hook 8, and a tension spring 27 is attached to the hanging holes on both sides of the blood bag. Under the action of the hook 8 and the two tension springs 27, the blood bag is in a relatively tense state. At this time, the first rotary power component 7 is controlled to rotate back and forth. The first rotary power component 7 drives the blood bag to rotate back and forth, deforming and squeezing the blood bag to shake the blood inside the blood bag, which can prevent the blood inside the blood bag from forming a thrombus and protect the patient's health. Next, the first rotating power component 7 is stopped, and the winding motor 23 is controlled to rotate forward to wind up and tension the main rope 15. The slide bar 17 contacts the blood bag and gradually squeezes the blood bag from bottom to top, agitating the blood inside the blood bag. Conversely, the winding motor 23 is controlled to rotate in the opposite direction to release and slack the main rope 15. The slide bar 17 resets and gradually disengages from the blood bag. During the transfusion, the ultrasound detection device continuously monitors the blood transfusion tube for air bubbles. If air bubbles are detected or the transfusion tube is empty after the transfusion is completed, the ultrasound detection device will sound an alarm to alert medical staff to handle the situation promptly.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clinical blood processing device, comprising a housing (1), characterized in that, The box (1) has a placement cavity (2) for placing blood bags. The box (1) is provided with a door (3) for closing the placement cavity (2). The side wall of the box (1) is provided with a perforation (4) for transfusion tubes to pass through. The clinical blood processing device also includes: An air pump (5) is installed on the housing (1) to provide an air source; The three-way valve (6) has three ports, two of which are connected to the air outlet of the air pump (5) and the placement cavity (2) respectively, so as to inflate the blood bag into the placement cavity (2) and squeeze it. The third port is equipped with a solenoid valve to release air.

2. The clinical blood processing device as described in claim 1, characterized in that, The top of the placement cavity (2) is provided with a first rotary power component (7) for shaking the blood bag. The output shaft of the first rotary power component (7) is vertically downward and is used to suspend the blood bag. The bottom of the placement cavity (2) is provided with two tension springs (27), which are located on both sides of the perforation (4) and each tension spring (27) is hung on the bottom hanging hole of the blood bag.

3. The clinical blood processing device as described in claim 2, characterized in that, The top of the placement cavity (2) is provided with a fixed cylinder (9), the inner wall of the fixed cylinder (9) is fixedly connected to the first rotary power component (7), and at least two movable arms (10) are evenly arranged at the bottom of the outer wall of the fixed cylinder (9). The blood bag is squeezed by controlling the two movable arms (10) to move closer to each other or further away from each other.

4. The clinical blood processing device as described in claim 3, characterized in that, Each of the aforementioned movable arms (10) includes: The rod (11) is rotatably connected at its end to the outer wall of the fixed cylinder (9); The first pull rope (12) is connected to the rod (11). By pulling the first pull rope (12), the rod (11) is driven to rotate toward the middle part below the fixed cylinder (9) to squeeze the blood bag.

5. A clinical blood processing device as described in claim 4, characterized in that, Each of the rods (11) has a sliding hole (16) on the end face away from the fixed cylinder (9). A sliding rod (17) is slidably disposed in the sliding hole (16). One end of the sliding rod (17) is connected to one end of the second pull rope (18). The other end of the second pull rope (18) passes through the side hole provided on the rod (11) and is fixedly connected to the main rope (15).

6. A clinical blood processing device as described in claim 5, characterized in that, Both the outside of the rod (11) and the end of the slide bar (17) are provided with baffles (19), and the two baffles (19) are respectively connected to the two ends of the first return spring (20).

7. A clinical blood processing device as described in claim 5, characterized in that, A fixed pulley (22) is fixedly installed on the top of the placement cavity (2). The main rope (15) is wound on the fixed pulley (22). The main rope (15) passes through the through hole on the side wall of the placement cavity (2) and is connected to the output shaft of the winding motor (23). The winding motor (23) is fixedly installed on the box body (1).

8. A clinical blood processing device as described in claim 1, characterized in that, The outer periphery of the fixed cylinder (9) is uniformly provided with a plurality of second return springs (21). The two ends of each second return spring (21) are respectively connected to the cylinder wall of the fixed cylinder (9) and a rod (11) to push the rod (11) to return to its original position.

9. A clinical blood processing device as described in claim 7, characterized in that, Each of the wire holes, the side holes, and the through holes is fixedly provided with a wire block (24), and each wire block (24) has a limiting arc groove (25) for reducing friction.

10. A clinical blood processing device as described in claim 1, characterized in that, The two adjacent slide rods (17) are connected by an arc spring (26) so that the two adjacent slide rods (17) maintain the same angle.

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