A pressure hemostatic device for blood purification

Abstract

This invention belongs to the technical field of hemostatic devices, and particularly relates to a compression hemostatic device for blood purification. It includes: a frame with Velcro straps wound around it, and a connecting shell fixedly connected to the frame; a lifting rod threadedly connected to the connecting shell, rotatably connected to a connecting rod, and a spring fixedly connected between the connecting rod and the connecting shell; an adjusting rod slidably connected to the connecting rod, and a hemostatic plate hinged to the adjusting rod; an arc-shaped plate disposed on the hemostatic plate; and a sliding frame slidably connected to the frame, slidably connected to a movable frame, with symmetrically distributed compression rods fixedly connected to the movable frame. When performing secondary wound care on a patient, this invention rotates the hemostatic plate and the arc-shaped plate, causing the arc-shaped plate to compress the area around the patient's wound and lift the hemostatic plate. This maintains the hemostatic function while separating the hemostatic plate from the patient's wound, facilitating secondary wound care by staff.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hemostasis devices, and mainly discloses a compression hemostasis device for blood purification. BACKGROUND

[0002] Blood purification technology mainly includes hemodialysis, plasma perfusion and plasma exchange, and its core principle is to draw the blood of a patient out of the body through an extracorporeal circulation device, to clear pathogenic substances in the blood, and to return the blood to the body, so as to achieve the purpose of purifying blood and treating diseases. After treatment, medical staff need to use a hemostasis device to continuously pressurize the blood vessel puncture site of the patient to reduce the risk of bleeding at the wound.

[0003] In clinical operation, due to the movement of the patient's body position or the activity of the limbs, the hemostasis device is easily displaced, which causes the compression force on the patient's wound to be insufficient and continuous bleeding occurs. At this time, the hemostasis device needs to be removed and the wound needs to be disinfected again to prevent infection. However, since the blood clotting process of the patient's wound has not been completed, continuous bleeding will occur again after the hemostasis device is removed from the patient's wound, which increases the difficulty of the second treatment of the medical staff and affects the normal recovery of the patient's wound. SUMMARY

[0004] The present application provides a compression hemostasis device for blood purification to solve the problems raised in the above background.

[0005] The technical scheme of the present application is as follows: a compression hemostasis device for blood purification, comprising: a frame, the frame is provided with a magic tape, the frame is fixedly connected with a connecting shell; a lifting rod is threadedly connected to the connecting shell, the lifting rod is rotatably connected with a connecting rod, the frame and the connecting shell are slidably connected with the connecting rod, a spring is fixedly connected between the connecting rod and the connecting shell; an adjusting rod is slidably connected to the connecting rod, the adjusting rod is hingedly connected with a hemostasis plate; an arc-shaped plate is arranged on the hemostasis plate; a sliding frame is slidably connected to the frame, the sliding frame is slidably connected with a moving frame, the moving frame is fixedly connected with symmetrically distributed extrusion rods, the extrusion rods are used for adjusting the positions of the hemostasis plate and the arc-shaped plate.

[0006] As a preferred, a transmission rod is rotatably connected to the frame, the transmission rod is threadedly connected with the sliding frame, and the transmission rod is used to drive the sliding frame to move.

[0007] As a preferred, a limiting frame is fixedly connected to the adjusting rod, and the limiting frame is used to limit the relative rotation direction of the adjusting rod and the hemostasis plate.

[0008] Preferably, the device further includes: a tension spring fixedly connected between the connecting rod and the adjusting rod; a transmission plate fixedly connected to the connecting rod, wherein the movable frame is provided with a rectangular hole, and the transmission plate slides within the rectangular hole of the movable frame.

[0009] Preferably, the transmission plate is provided with a limiting surface, and the distance between the limiting surface and the frame increases as the distance between the limiting surface and the connecting rod increases.

[0010] Preferably, the thickness of the arc-shaped plate is greater than the thickness of the hemostatic plate, the arc-shaped plate is slidably connected to the hemostatic plate, and the arc-shaped plate is provided with the same number of guide surfaces as the compression rods, the guide surfaces being used to guide the movement of the compression rods.

[0011] Preferably, the device further includes: a flattening assembly disposed on the arc-shaped plate for stretching the patient's skin; the flattening assembly includes: symmetrically distributed flattening frames, all slidably connected to the arc-shaped plate; symmetrically distributed guide plates, respectively fixed to adjacent flattening frames, the guide plates being located on the moving path of adjacent compression rods, and the distance between the symmetrically distributed guide plates decreasing as the distance between them and the hemostatic plate increases.

[0012] Preferably, a guide block is fixedly connected to the flattening frame, the guide block is fixedly connected to the adjacent guide plate, the arc plate is provided with symmetrically distributed guide grooves, and a protrusion located in the adjacent guide groove is fixedly connected to the flattening frame. The guide groove is used to guide the movement of the flattening frame, and the guide block is located on the movement path of the adjacent extrusion rod.

[0013] Preferably, the symmetrically distributed flattening frames are all fixedly connected by elastic ropes, and the flattening frames are fixedly connected to the frame body by pull ropes.

[0014] Preferably, the guide groove is composed of inclined grooves and straight grooves, with the straight grooves on the symmetrically distributed guide grooves located on their opposite sides.

[0015] Beneficial effects: 1. When performing secondary care on a patient's wound, this invention rotates the hemostatic plate and the arc-shaped plate, causing the arc-shaped plate to compress the area around the patient's wound and lift the hemostatic plate. While preserving the hemostatic function, it separates the hemostatic plate from the patient's wound, making it convenient for staff to perform secondary care on the patient's wound.

[0016] 2. This invention eliminates the height difference between the hemostatic plate and the arc-shaped plate by moving them relative to each other, while increasing the squeezing force of the arc-shaped plate on the patient's skin. This makes the squeezing force of the arc-shaped plate on the patient's skin greater than the squeezing force of the hemostatic plate on the patient's wound, thus reducing the probability of bleeding from the patient's wound due to insufficient squeezing force.

[0017] 3. Before rotating the arc plate, the present invention pushes the patient's skin to both sides through the flattening frame, stretching the skin near the patient's wound, so that the patient's skin changes from a loose state to a stretched state, which makes it easier for the arc plate to directly transmit pressure to the patient's blood vessels, thereby improving the hemostatic effect of the arc plate in the process of squeezing the patient's skin. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the connecting rod, spring, and adjusting rod of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the transmission rod, tension spring, and transmission plate of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the extrusion rod, guide plate, and pull rope of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the flattening frame, guide plate, and guide block of the present invention;

[0023] Figure 6 This is an exploded three-dimensional view of the arc-shaped plate, flattening frame, and elastic rope of the present invention.

[0024] The markings in the diagram are as follows: 1-Frame, 2-Hook and loop strap, 3-Connecting shell, 4-Lifting rod, 5-Connecting rod, 6-Spring, 7-Adjusting rod, 701-Limiting frame, 8-Hemostatic plate, 9-Arc plate, 901-Guide surface, 10-Sliding frame, 11-Moving frame, 12-Squeezing rod, 13-Transmission rod, 14-Tension spring, 15-Transmission plate, 1501-Limiting surface, 16-Flattening frame, 17-Guide plate, 18-Guide block, 19-Guide groove, 20-Elastic rope, 21-Pull rope. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0026] Example 1: This invention provides a pressure hemostasis device for blood purification, such as... Figures 1-6As shown, it includes: a frame 1, with Velcro strap 2 wrapped around it, and a connecting shell 3 fixedly connected to the frame 1; a lifting rod 4, threadedly connected to the connecting shell 3, and a connecting rod 5 rotatably connected to the lifting rod 4; both the frame 1 and the connecting shell 3 are slidably connected to the connecting rod 5; a spring 6 is fixedly connected between the connecting rod 5 and the connecting shell 3; an adjusting rod 7, slidably connected to the connecting rod 5, and a hemostatic plate 8 hinged to the adjusting rod 7; an arc-shaped plate 9, set on the hemostatic plate 8; a sliding frame 10, slidably connected to the frame 1, and a movable frame 11 slidably connected to the sliding frame 10; the movable frame 11 is fixedly connected to symmetrically distributed compression rods 12, which are used to adjust the position of the hemostatic plate 8 and the arc-shaped plate 9.

[0027] Furthermore, such as Figures 1-3 As shown, a transmission rod 13 is rotatably connected to the frame 1. The transmission rod 13 is threadedly connected to the sliding frame 10. The transmission rod 13 is used to drive the sliding frame 10 to move.

[0028] Furthermore, such as Figure 4 and Figure 6 As shown, a limiting frame 701 is fixedly connected to the adjusting rod 7. The limiting frame 701 is used to limit the direction of relative rotation between the adjusting rod 7 and the hemostatic plate 8.

[0029] The above solution provides a method for facilitating wound care by gradually squeezing blood vessels near the patient's wound to reduce the amount of blood flowing to the wound, while simultaneously stopping the squeezing of the wound. Symmetrically distributed locking blocks are provided on the lower side of the frame 1 to fix the frame 1 and reduce the probability of misalignment between the frame 1 and the patient's arm. The Velcro strap 2 is an existing device and will not be described in detail below. The lifting rod 4 is a threaded rod used to drive the connecting rod 5 up and down; the lower end of the lifting rod 4 is rotatably connected to the upper end of the connecting rod 5. The adjusting rod 7 is located below the connecting rod 5, which has a cavity. Initially, the adjusting rod 7 contacts the lower side of the cavity of the connecting rod 5. The hemostatic plate 8 is parallel to the frame 1. The arc-shaped plate 9 is located at the hemostatic plate 8. On the left side of the blood plate 8, in this embodiment, the arc-shaped plate 9 and the hemostatic plate 8 can be considered as fixedly connected. The thickness of the arc-shaped plate 9 is the same as the thickness of the hemostatic plate 8, and the right edge of the lower side of the arc-shaped plate 9 is aligned with the lower side of the hemostatic plate 8. The sliding frame 10 is located on the left side of the connecting shell 3. Initially, the right side of the sliding frame 10 is in contact with the frame 1. During the process of the squeezing rod 12 moving to the left, the squeezing rod 12 squeezes the arc surface on the upper side of the arc-shaped plate 9, so that the lower side of the arc-shaped plate 9 contacts the patient's skin from right to left, thereby reducing the amount of blood flowing to the wound. During this process, the arc-shaped plate 9 drives the hemostatic plate 8 to tilt upward away from the patient's wound. Initially, the lower end of the squeezing rod 12 is in contact with the upper side of the hemostatic plate 8, and the squeezing rod 12 is located to the right of the adjusting rod 7, which is used to limit the counterclockwise rotation of the hemostatic plate 8. Figure 3(From front to back), when the hemostatic plate 8 is parallel to the frame 1, the limiting frame 701 restricts the position of the hemostatic plate 8, preventing the hemostatic plate 8 from rotating clockwise. Figure 3 (From front to back).

[0030] Furthermore, such as Figure 3 and Figure 4 As shown, it also includes: a tension spring 14, fixed between the connecting rod 5 and the adjusting rod 7; a transmission plate 15, fixed to the connecting rod 5; the movable frame 11 is provided with a rectangular hole, and the transmission plate 15 slides in the rectangular hole of the movable frame 11.

[0031] Furthermore, such as Figure 3 and Figure 4 As shown, the transmission plate 15 is provided with a limiting surface 1501, and the distance between the limiting surface 1501 and the frame 1 increases as the distance between the limiting surface 1501 and the connecting rod 5 increases.

[0032] In the above scheme, the tension spring 14 is used to drive the adjusting rod 7 to move upward, providing the force for the adjusting rod 7 to move upward. The tension spring 14 is always in a stored state. The transmission plate 15 is used to drive the moving frame 11 to move up and down synchronously, so that the moving frame 11 drives the squeezing rod 12 to move synchronously with the hemostatic plate 8, ensuring that the squeezing rod 12 and the hemostatic plate 8 are in contact. The left side of the transmission plate 15 is provided with a limiting surface 1501, which is used to drive the squeezing rod 12 to move downward relative to the frame 1 during the process of the moving frame 11 moving to the left along the limiting surface 1501, thereby increasing the squeezing force of the squeezing rod 12 on the arc plate 9.

[0033] Workflow: When medical staff need to stop bleeding on a patient's arm wound (taking an example where the patient's arm is extended to the right and blood is flowing to the right), the staff first covers the wound with hemostatic cotton. Then, the staff adjusts the position of the hemostatic plate 8 by moving the frame 1, placing the hemostatic plate 8 on the patient's wound. The staff then fixes the frame 1 to the patient's arm with Velcro straps 2. Next, the staff rotates the lifting rod 4, which moves the connecting rod 5 downward. The connecting rod 5 moves the compression spring 6, which in turn moves the adjusting rod 7 and the transmission plate 15 downward. The transmission plate 15 moves the compression rod 12 downward through the moving frame 11. The adjusting rod 7 moves the hemostatic plate 8 synchronously, causing the hemostatic plate 8 to press downward against the patient's wound. During this process, the limiting frame 701 and the compression rod 12 limit the hemostatic plate 8, keeping it horizontal with the frame 1. The hemostatic plate 8 moves the arc plate 9 and its parts downward synchronously until the pressure exerted by the hemostatic plate 8 on the patient reaches the specified level. Then, the staff stops rotating the connecting shell 3, completing the hemostasis operation on the patient's wound.

[0034] During the process of stopping bleeding from a patient's wound, when the wound has not yet coagulated and the hemostatic plate 8 becomes misaligned with the wound, the pressure exerted by the hemostatic plate 8 on the wound decreases, and the wound continues to bleed. The operator then rotates the transmission rod 13, which drives the sliding frame 10 to move to the left. The sliding frame 10, through the moving frame 11, drives the compression rod 12 to move synchronously until the compression rod 12 separates from the hemostatic plate 8. The moving frame 11 then contacts the limiting surface 1501, and the compression rod 12 contacts the arc-shaped plate 9. The compression rod 12 compresses the arc-shaped plate 9, causing the hemostatic plate 8 to rotate counterclockwise around the lower end of the adjusting rod 7. Figure 2 (Viewed from front to back) The right side of the hemostatic plate 8 gradually lifts up. At the same time, the tension spring 14 pulls the adjusting rod 7, causing the hemostatic plate 8 to gradually move upward and reduce the pressure on the patient's wound. Then, the sliding frame 10 continues to move to the left, and the limiting surface 1501 guides the moving frame 11 to move downward. The moving frame 11 drives the squeezing rod 12 to squeeze the arc plate 9 downward, further increasing the pressure of the arc plate 9 on the patient's skin and reducing the amount of blood flowing to the wound. At the same time, the squeezing rod 12 gradually squeezes the arc plate 9 to the left, giving the arc plate 9 a tendency to drive the blood to the left. Until the left side of the sliding frame 10 contacts the frame 1, the staff stops rotating the transmission rod 13, and the hemostatic plate 8 is completely separated from the patient's wound. The staff changes the hemostatic cotton and disinfects the patient's wound again to avoid infection and secondary damage.

[0035] After the hemostatic cotton is replaced, the staff rotates the transmission rod 13 in the reverse direction. The sliding frame 10 drives the squeezing rod 12 to move to the right to reduce the squeezing force on the arc plate 9, so that the arc plate 9 moves in the reverse direction to reset. At the same time, the arc plate 9 drives the hemostatic plate 8 to move in the reverse direction. The hemostatic plate 8 moves and stretches the tension spring 14 while squeezing the patient's wound again until the squeezing rod 12 contacts the hemostatic plate 8. Then the arc plate 9 stops rotating and resets. The hemostatic plate 8 stops moving and presses the patient's wound again. When the right side of the sliding frame 10 contacts the frame 1, the sliding frame 10 resets. After the patient's wound is hemostatic, the staff unfastens the Velcro strap 2 and removes the device.

[0036] Because hemostatic cotton is placed under the hemostatic plate 8, there is a height difference between the actual surfaces of the arc-shaped plate 9 and the hemostatic plate 8 and the patient, which causes the pressure of the arc-shaped plate 9 on the patient's skin to be less than the pressure of the hemostatic plate 8 on the patient's wound, thus reducing the hemostatic effect of the arc-shaped plate 9 on the patient's wound.

[0037] Example 2: Based on Example 1, such as Figure 5 As shown, the thickness of the arc plate 9 is greater than that of the hemostatic plate 8. The arc plate 9 and the hemostatic plate 8 are slidably connected. The arc plate 9 is provided with the same number of guide surfaces 901 as the squeezing rod 12. The guide surfaces 901 are used to guide the movement of the squeezing rod 12.

[0038] The above solution provides a method in which the arc-shaped plate 9 moves downward relative to the hemostatic plate 8 when the arc-shaped plate 9 is squeezed, thereby increasing the squeezing force on the patient's blood vessels and further reducing the amount of blood flowing to the patient's wound. Initially, the upper side of the arc-shaped plate 9 is higher than the upper side of the hemostatic plate 8. During the process of the squeezing rod 12 moving to the left, the squeezing rod 12 causes the arc-shaped plate 9 to move downward relative to the hemostatic plate 8 through the squeezing guide surface 901, increasing the squeezing force of the arc-shaped plate 9 on the patient and ensuring that the arc-shaped plate 9 has sufficient squeezing force on the patient's skin, thereby reducing the amount of blood flowing to the patient's wound.

[0039] During the process of the arc plate 9 compressing the patient's skin, the loose skin and subcutaneous tissue will disperse the pressure of the arc plate 9 on the patient's blood vessels, resulting in a reduction in the squeezing force of the arc plate 9 on the blood vessels, which will affect the normal hemostasis of the wound by the arc plate 9.

[0040] Example 3, based on Example 2, such as Figures 2-6 As shown, it also includes: a flattening assembly, which is set on the arc plate 9 and is used to stretch the patient's skin. The flattening assembly includes: symmetrically distributed flattening frames 16, which are all slidably connected to the arc plate 9; symmetrically distributed guide plates 17, which are respectively fixed to adjacent flattening frames 16. The guide plates 17 are located on the moving path of adjacent compression rods 12. The distance between the symmetrically distributed guide plates 17 decreases as the distance between them and the hemostatic plate 8 increases.

[0041] Furthermore, such as Figures 2-6 As shown, a guide block 18 is fixedly connected to the flattening frame 16. The guide block 18 is fixedly connected to the adjacent guide plate 17. The arc plate 9 is provided with symmetrically distributed guide grooves 19. The flattening frame 16 is fixedly connected with a protrusion that slides in the adjacent guide groove 19. The guide groove 19 is used to guide the flattening frame 16 to move. The guide block 18 is located on the moving path of the adjacent extrusion rod 12.

[0042] Furthermore, such as Figure 5 and Figure 6 As shown, the symmetrically distributed flattening frames 16 are all fixedly connected by elastic ropes 20, and the flattening frames 16 are fixedly connected to the frame body 1 by pull ropes 21.

[0043] Furthermore, such as Figure 6 As shown, the guide groove 19 consists of inclined grooves and straight grooves, and the straight grooves on the symmetrically distributed guide groove 19 are located on the opposite side.

[0044] The above solution provides a method to stretch the patient's loose skin to both sides before squeezing the arc plate 9, thereby improving the squeezing effect of the arc plate 9 on the patient. In this embodiment, there are two flattening frames 16 and two guide plates 17. The two flattening frames 16 are located on the left and right sides of the arc plate 9, respectively, and the two guide plates 17 are located on the left and right sides of the arc plate 9, respectively. The distance between the two guide plates 17 gradually decreases from right to left. During the process of the squeezing rod 12 moving to the left to squeeze the guide plates 17, the two flattening frames 16 are moved away from each other. Two guide blocks 18 are located on the right side of the flattening frame 16. The guide blocks 18 are provided with inclined surfaces. The guide groove 19 is composed of inclined grooves and straight grooves. The protrusions of the flattening frame 16 are located in the straight grooves of the guide groove 19. The length of the straight grooves on the guide groove 19 is greater than the maximum width of the guide blocks 18 in the front-back direction. Initially, the guide blocks 18 are positioned on the right side of the flattening frame 16. The lower side of the guide block 18 contacts the upper side of the hemostatic plate 8. The protrusion of the flattening frame 16 is located at the innermost end of the guide groove 19. When the flattening frame 16 moves horizontally along the straight groove of the guide groove 19, the lower side of the guide block 18 contacts the hemostatic plate 8, and the arc plate 9 will not move downward relative to the hemostatic plate 8, so that the positions of the arc plate 9 and the hemostatic plate 8 remain relatively stable. The elastic rope 20 is used to drive the two flattening frames 16 to reset, so that the two flattening frames 16 move towards each other. The lower ends of the two pull ropes 21 are located between the upper ends of the two pull ropes 21. The pull ropes 21 are used to drive the flattening frame 16 to move away from the arc plate 9, so as to adjust the pushing distance of the flattening frame 16 on the patient's skin. Initially, the pull ropes 21 are in a taut state. The pull ropes 21 are used to adjust the position of the flattening frame 16, so that the distance that the flattening frame 16 can push the patient's skin decreases as the depth of the hemostatic plate 8 pressed into the patient's skin increases.

[0045] Workflow: During the downward movement of the hemostatic plate 8, the hemostatic plate 8 drives the arc plate 9 to move downward, and the arc plate 9 drives the flattening frame 16 and its parts to move downward. This causes the two flattening frames 16 to move away from each other under the action of the adjacent pull ropes 21 and stretch the elastic rope 20. Under the action of the protrusions on its surface, the flattening frame 16 moves along the straight groove of the guide groove 19. During this process, the squeezing force between the flattening frame 16 and the patient's skin is insufficient to push the patient's skin to move until the squeezing force of the hemostatic plate 8 on the patient's wound reaches the specified value. Then, the hemostatic plate 8 stops moving, the arc plate 9 stops driving the flattening frame 16 to move downward, the pull ropes 21 stop stretching the flattening frame 16, and the flattening frame 16 and its parts stop moving. At this time, the protrusions on the flattening frame 16 are still located in the straight groove of the guide groove 19.

[0046] When a patient's wound bleeds and requires secondary treatment, the moving frame 11 drives the compression rod 12 to move to the left. When the compression rod 12 contacts the inclined surface of the guide block 18 (taking the movement direction of the front flattening frame 16 and its components as an example), the compression rod 12 presses the guide block 18 forward, causing the guide block 18 to move forward along the adjacent flattening frame 16 via the guide plate 17. The flattening frame 16 then stretches the elastic rope 20 again. When the protrusion on the flattening frame 16 separates from the straight groove of the guide groove 19, the guide block 18 separates from the compression rod 12 and contacts the guide plate 17. The protrusion on the flattening frame 16 moves along the inclined groove inside the guide groove 19, causing the flattening frame 16 to move forward relative to the arc plate 9 while simultaneously moving relative to the arc... The curved plate 9 moves downward, thereby increasing the squeezing force between the flattening frame 16 and the patient's skin. This causes the flattening frame 16 to push the patient's skin forward, gradually stretching the skin and increasing the squeezing effect of the curved plate 9 on the patient's skin. When the limiting surface 1501 contacts the adjacent squeezing rod 12, the squeezing rod 12 squeezes the limiting surface 1501, causing the curved plate 9 to move downward, increasing the squeezing force of the curved plate 9 on the patient's skin. This continues until the squeezing rod 12 stops moving to the left, at which point the flattening frame 16 stops moving. After the hemostatic cotton is replaced, the operator rotates the transmission rod 13 in the opposite direction, causing the curved plate 9 to repeat the above process and move back to its original position. The elastic rope 20 drives the flattening frame 16 and its parts to move back to their original position.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A compression hemostasis device for blood purification, characterized by, Including: The frame body (1) is provided with a magic tape (2), and the frame body (1) is fixedly connected with a connecting shell (3); The lifting rod (4) is threadedly connected to the connecting shell (3), the lifting rod (4) is rotatably connected with a connecting rod (5), the frame body (1) and the connecting shell (3) are slidably connected with the connecting rod (5), and the connecting rod (5) and the connecting shell (3) are fixedly connected with a spring (6); The adjusting rod (7) is slidably connected to the connecting rod (5), and the adjusting rod (7) is hingedly connected with a hemostatic plate (8); The arc-shaped plate (9) is arranged on the hemostatic plate (8); The sliding frame (10) is slidably connected to the frame body (1), the sliding frame (10) is slidably connected with a moving frame (11), the moving frame (11) is fixedly connected with symmetrically distributed extrusion rods (12), and the extrusion rods (12) are used for adjusting the positions of the hemostatic plate (8) and the arc-shaped plate (9); The frame body (1) is rotatably connected with a transmission rod (13), the transmission rod (13) is threadedly connected with the sliding frame (10), and the transmission rod (13) is used for driving the sliding frame (10) to move; The limiting frame (701) is fixedly connected to the adjusting rod (7), and the limiting frame (701) is used for limiting the relative rotating direction of the adjusting rod (7) and the hemostatic plate (8); Further comprising: The tension spring (14) is fixedly connected between the connecting rod (5) and the adjusting rod (7); The transmission plate (15) is fixedly connected to the connecting rod (5), the moving frame (11) is provided with a rectangular hole, and the transmission plate (15) slides in the rectangular hole of the moving frame (11); The limiting surface (1501) is arranged on the transmission plate (15), and the distance between the limiting surface (1501) and the frame body (1) increases with the increase of the distance between the limiting surface (1501) and the connecting rod (5).

2. The compression hemostasis device for blood purification according to claim 1, wherein The thickness of the arc-shaped plate (9) is greater than that of the hemostatic plate (8), the arc-shaped plate (9) is slidably connected with the hemostatic plate (8), the arc-shaped plate (9) is provided with guide surfaces (901) same in number as the extrusion rods (12), and the guide surfaces (901) are used for guiding the movement of the extrusion rods (12).

3. The compression hemostasis device for blood purification according to claim 2, wherein Further comprising: The flattening assembly is arranged on the arc-shaped plate (9) and is used for stretching the skin of a patient, and the flattening assembly comprises: The symmetrically distributed flattening frames (16) are slidably connected to the arc-shaped plate (9); The symmetrically distributed guide plates (17) are respectively fixedly connected to adjacent flattening frames (16), the guide plates (17) are located on the movement paths of adjacent extrusion rods (12), and the distance between the symmetrically distributed guide plates (17) decreases with the increase of the distance between the guide plates (17) and the hemostatic plate (8).

4. The compression hemostasis device for blood purification according to claim 3, wherein The guiding block (18) is fixed on the flattening frame (16) and is fixed with the adjacent guiding plate (17), the arc-shaped plate (9) is provided with symmetrically distributed guiding grooves (19), the convex block is fixed on the flattening frame (16) and slides in the adjacent guiding groove (19), the guiding groove (19) is used for guiding the flattening frame (16) to move, and the guiding block (18) is located on the movement path of the adjacent extruding rod (12).

5. The compression hemostasis device for blood purification according to claim 4, wherein The elastic ropes (20) are commonly fixed between the symmetrically distributed flattening frames (16), and the pulling ropes (21) are fixed between the flattening frames (16) and the frame body (1).

6. The compression hemostasis device for blood purification according to claim 5, wherein The guiding groove (19) is composed of an inclined groove and a straight groove, and the straight grooves of the symmetrically distributed guiding grooves (19) are located on opposite sides.

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