Anticoagulation pump

Abstract

The invention relates to the technical field of blood purification, in particular to an anticoagulation pump which comprises a bottom plate, an injection pushing mechanism and a liquid medicine feeding mechanism, a hemodialysis machine is fixedly installed on the upper side of the bottom plate, a blood drawing pipe is fixedly arranged on one side of the hemodialysis machine, and an infusion tube is fixedly arranged on the other side of the hemodialysis machine; a round seat frame and a box body are fixedly connected to the upper side of the bottom plate, an injector is clamped in the round seat frame, heparin can be supplemented to the injector through the injection pushing mechanism, the injector, the box body and a piston rod, heparin can be continuously injected, blood is prevented from being coagulated in the hemodialysis machine, and the hemodialysis efficiency is improved. The hemodialysis purification device has the advantages that smooth flow of blood is guaranteed, the injector does not need to be replaced, time and labor are saved during operation, long-time interruption of heparin injection is avoided, improvement of the anticoagulation effect of hemodialysis purification is facilitated, the hemodialysis purification process can be smoothly performed, and meanwhile, the working efficiency of the anticoagulation pump is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of blood purification, in particular to an anticoagulation pump. Background Art

[0002] Blood purification is a medical technology that helps maintain a stable internal environment by filtering, adsorbing or replacing harmful substances in the blood. Its core functions include removing metabolic waste, toxins, excess water, correcting electrolyte imbalances, and treating specific diseases, thereby improving organ function. In blood purification, an anticoagulant pump is required to accurately and continuously deliver heparin to the hemodialysis pipeline.

[0003] The prior art discloses a Chinese patent with application number CN201721619225.0, an anticoagulant pump for blood purification, comprising a frame structure surrounded by a front baffle, a rear baffle, a left baffle and a right baffle, a control circuit board being installed above the frame structure, a transmission screw being passed between the front baffle and the rear baffle, a sliding component being installed on the transmission screw, a transmission rod being passed through the rear baffle, one end of the transmission rod being connected to the sliding component, and the other end being connected to the tail clamp component; a metal card being fixed on the sliding component, a position sensor being electrically connected to the control circuit board, and a first paddle on the position sensor being snapped into the metal card; a needle tube seat being provided below the frame structure, a needle tube pressure plate being connected below the needle tube seat, a movable rod being provided on the needle tube pressure plate, a clamping ring being movably provided on the fixed seat, a tube diameter detection sensor being electrically connected to the control circuit board, and a second paddle on the tube diameter detection sensor being snapped into the clamping ring.

[0004] Although the above-mentioned device can achieve a simple structure and is easy to use, the anticoagulation pump in the above-mentioned device can usually only perform a one-time heparin injection using a syringe. If heparin is to be injected again, the syringe must be replaced, which makes the operation more cumbersome and troublesome, and may also cause the injection of heparin to be interrupted, reducing the anticoagulation effect of hemodialysis purification, thereby affecting the working efficiency of the anticoagulation pump, making the hemodialysis purification process not smooth and inconvenient to use. Summary of the Invention

[0005] The object of the present invention is to provide an anticoagulation pump to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An anticoagulant pump comprises a base plate, an injection pushing mechanism and a liquid medicine feeding mechanism. A hemodialysis machine is fixedly mounted on the upper side of the base plate. A blood draw tube is fixedly mounted on one side of the hemodialysis machine, and an infusion tube is fixedly mounted on the other side of the hemodialysis machine. A round base frame and a housing are fixedly connected to the upper side of the base plate. A syringe is clamped inside the round base frame. An injection head is fixedly mounted on the lower side of the syringe. A piston push rod for injecting heparin is slidably mounted inside the syringe.

[0008] A first pipeline is fixedly connected between the syringe and the box body, a one-way solenoid valve 2 is fixedly provided on the first pipeline, a second pipeline is clamped on the outer surface of the injection head, a one-way solenoid valve 1 is fixedly provided on the infusion tube, one side of the one-way solenoid valve 1 is tightly connected to the second pipeline, a piston rod is slidably connected to the bottom end of the inside of the box body, a driven wedge block is fixedly installed on the lower side of the piston rod, and a first spring is fixedly connected between the driven wedge block and the box body.

[0009] Preferably, a vertical plate is fixedly mounted on the upper side of the bottom plate, an electric push rod is fixedly mounted on one side of the vertical plate, an active wedge block is fixedly mounted on one side of the electric push rod, and the active wedge block and the driven wedge block are fitted together.

[0010] The upper side of the U-shaped plate is fixedly connected to the upper side of the bottom plate, and the upper side of the U-shaped plate is fixedly provided with a top frame. The injection pushing mechanism includes a U-shaped plate, one side of the top frame is fastened to the U-shaped plate, the internal rotation of the U-shaped plate is connected to a first screw, the outer surface of the first screw is threadedly connected to a lifting plate for pushing the piston push rod, the lower side of the top frame is slidably connected to a movable pressure plate, one side of the movable pressure plate is fastened to the piston push rod, two second springs are fixedly connected between the top frame and the movable pressure plate, the other side of the movable pressure plate passes through the top frame and extends to the upper side of the top frame, the other side of the movable pressure plate is fixedly connected to the top plate, one side of the top plate is fastened to the lifting plate, the internal fixed connection of the U-shaped plate is limited rod 1, the outer surface of the limit rod 1 is slidably connected to the inside of the lifting plate, a servo motor is fixed on the upper side of the U-shaped plate, and the output shaft of the servo motor is fastened to the first screw.

[0011] Preferably, the medicine liquid feeding mechanism includes two liquid adding seats, one side of the two liquid adding seats is tightly connected to the two ends of the box body, the upper sides of the two liquid adding seats are clamped with heparin bottles, one side of the inside of the two liquid adding seats is slidably connected to a sealing rod, one side of the sealing rod passes through the liquid adding seat and extends to one side of the liquid adding seat, one side of the two sealing rods is fixedly connected to a U-shaped seat, the inside of the two U-shaped seats is rotatably connected to a roller, and a third spring is fixedly connected between the two U-shaped seats and the liquid adding seat.

[0012] Preferably, an L-shaped plate is fixedly connected to the upper side of the box body, a cam lever for squeezing a roller is rotatably connected to one side of the L-shaped plate, a servo motor is fixedly provided on the other side of the L-shaped plate, the output shaft of the servo motor is tightly connected to the cam lever, a top box is fixedly installed on the other side of the L-shaped plate, two sliding rods are fixedly connected to the inside of the top box, four arc-shaped splints for positioning the heparin bottle are slidably connected to the outer surfaces of the two sliding rods, the insides of the four arc-shaped splints are all connected with rubber strips in an array, and two fourth springs are fixedly connected between the two arc-shaped splints.

[0013] Preferably, the U-shaped frame is internally rotatably connected to a double-headed screw, the outer surface of the double-headed screw is threadedly connected to two symmetrically distributed connecting plates, one side of each connecting plate is fixedly installed with a positioning arc plate for fixing the syringe, the U-shaped frame is internally fixedly connected to a limiting rod 2, the outer surface of the limiting rod 2 is slidably connected to the inside of the connecting plate, a servo motor is fixedly provided on one side of the U-shaped frame, and the output shaft of the servo motor is tightly connected to the double-headed screw.

[0014] Preferably, two movable arc plates for fixing the second pipe are slidably connected to both ends of the circular seat frame, a fifth spring is fixedly connected between the two movable arc plates and the circular seat frame, a support plate is fixedly installed at one end of the two connecting plates, and a circular plate for squeezing the movable arc plate is fixedly connected to one side of the two support plates.

[0015] Preferably, both ends of the hemodialysis machine are fixed with a placement recess for supporting the blood draw tube and the infusion tube, one side of the two placement recesses is a rotating frame, the top ends of the two rotating frames are slidably connected to the telescopic pressure plates for positioning the blood draw tube and the infusion tube, and a sixth spring is fixedly connected between the two telescopic pressure plates and the rotating frame.

[0016] Preferably, a mounting seat is fixedly installed on one side of the two rotating frames, a clamping plate is clamped on the upper side of the two mounting seats, a U-shaped side plate is fixed on both ends of the hemodialysis machine, a rotating plate is rotatably connected inside the two U-shaped side plates, a seventh spring is connected in an array between the two rotating plates and the clamping plate, and an insertion rod for positioning the clamping plate is clamped on one side of the two mounting seats.

[0017] Preferably, one side of the piston rod passes through the box body and extends to the lower side of the box body, the outer surface of the box body is fixedly connected to a mounting plate, and one side of the mounting plate is tightly connected to the second one-way solenoid valve.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention squeezes the piston push rod so that the heparin in the syringe can enter the interior of the infusion tube along the injection head, the second pipe and the one-way solenoid valve, thereby preventing blood from clotting in the hemodialysis machine and ensuring smooth blood flow. At this time, the injection push mechanism, the syringe, the box and the piston rod can be used to replenish heparin in the syringe, so that heparin can be injected continuously without replacing the syringe. The operation is time-saving and labor-saving, and the injection of heparin will not be interrupted for a long time. It is beneficial to improve the anticoagulant effect of hemodialysis purification, allowing the hemodialysis purification process to proceed smoothly, and at the same time improving the working efficiency of the anticoagulant pump.

[0020] 2. The present invention can clamp and position the heparin bottles by utilizing two arc-shaped clamping plates equipped with a fourth spring, and the rubber strips on the arc-shaped clamping plates can increase the friction with the heparin bottles, so that the two heparin bottles can be installed more firmly. Then, the top end of the cam rotating rod squeezes the roller, so that the elastic sealing rod can be away from the discharge port of the liquid filling seat to form a liquid medicine feeding mechanism. In this way, the liquid medicine feeding mechanism injects heparin into the box body. When the cam rotating rod squeezes the other roller, heparin can also be injected into the box body, so as to continuously replenish heparin to allow the entire anticoagulation pump to maintain sufficient heparin to ensure the anticoagulation effect of hemodialysis.

[0021] 3. The present invention can drive the two positioning arc plates to clamp the two ends of the syringe through the relative movement of the two connecting plates, and can also allow the two elastic movable arc plates to clamp the second pipe and the injection head. In this way, the second pipe can be tightly connected to the injection head, thereby enhancing the sealing during injection and preventing heparin leakage. Subsequently, the placement of the concave plate and the elastic retractable pressure plate and the card plate can support and position the blood drawing tube and the infusion tube, so that the blood drawing tube and the infusion tube are not easily bent and affect the blood purification process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure of the syringe and piston push rod;

[0025] Figure 3 yes Figure 2 A schematic diagram of the structure of the middle piston rod, the driven wedge block and the first spring;

[0026] Figure 4 yes Figure 2 A schematic structural diagram of the middle movable pressure plate and the second spring;

[0027] Figure 5 yes Figure 4 Installation diagram of the middle connecting plate and positioning arc plate;

[0028] Figure 6 yes Figure 5 Enlarged view of point D in the middle;

[0029] Figure 7 yes Figure 1 Installation diagram of the electric push rod and active wedge block;

[0030] Figure 8 yes Figure 3 Schematic diagram of the installation of the middle dosing station and heparin bottle;

[0031] Figure 9 yes Figure 8 Schematic diagram of the structure of the middle liquid adding seat and the sealing rod;

[0032] Figure 10 yes Figure 1 Schematic diagram of the structure in which the concave plate and the telescopic pressure plate are placed.

[0033] The reference numerals in the figures are as follows:

[0034] 1. Bottom plate; 2. Hemodialysis machine; 3. Blood collection tube; 4. Infusion tube; 5. Round base; 6. Syringe; 7. Piston push rod; 8. Box; 9. First pipeline; 10. One-way solenoid valve (1); 11. Second pipeline; 12. Injection head; 13. Piston rod; 14. Driven wedge; 15. First spring; 16. Vertical plate; 17. Electric push rod; 18. Active wedge; 19. Mounting plate; 20. One-way solenoid valve (2); 21. U-shaped frame; 22. Top frame; 23. U-shaped plate; 24. First lead screw; 25. Lifting plate; 26. Movable pressure plate; 27. Second spring; 28. Top plate; 29. ​​Limit rod (1); 30. Dosing seat ;31. Heparin bottle;32. Insert rod;33. Sealing rod;34. U-shaped seat;35. Roller;36. Third spring;37. L-shaped plate;38. Cam rod;39. Top box;40. Slide rod;41. Arc splint;42. Fourth spring;43. Rubber strip;44. Double-head screw;45. Connecting plate;46. Positioning arc plate;47. Limit rod 2;48. Support plate;49. Round plate;50. Movable arc plate;51. Fifth spring;52. Place concave plate;53. Rotating frame;54. Telescopic pressure plate;55. Sixth spring;56. Mounting seat;57. Card plate;58. U-shaped side plate;59. Rotating plate;60. Seventh spring. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] An anticoagulant pump, such as Figures 1-10 As shown, it includes a base plate 1, an injection pushing mechanism and a liquid medicine feeding mechanism. A hemodialysis machine 2 is fixedly mounted on the upper side of the base plate 1. A blood draw tube 3 is fixedly mounted on one side of the hemodialysis machine 2. An infusion tube 4 is fixedly mounted on the other side of the hemodialysis machine 2. A round base frame 5 and a box body 8 are fixedly connected to the upper side of the base plate 1. A syringe 6 is clamped inside the round base frame 5. An injection head 12 is fixedly mounted on the lower side of the syringe 6. A piston push rod 7 for injecting heparin is slidably mounted inside the syringe 6.

[0037] A first pipe 9 is fixedly connected between the syringe 6 and the box body 8, and a one-way solenoid valve 20 is fixedly provided on the first pipe 9. When the one-way solenoid valve 20 is opened, heparin flows from the box body 8 and the one-way solenoid valve 20 to the inside of the syringe 6 due to gravity, so that the heparin does not flow back. The outer surface of the injection head 12 is clamped with a second pipe 11, and a one-way solenoid valve 10 is fixed on the infusion tube 4. One side of the one-way solenoid valve 10 is tightly connected to the second pipe 11. After the one-way solenoid valve 10 is opened, heparin can be injected into the infusion tube 4 along the second pipe 11 and the one-way solenoid valve 10, allowing the heparin to contact with the blood, ensuring the smooth flow of blood, and the one-way solenoid valve 10 will not allow the blood to flow back to the second pipe 11. The bottom end of the box body 8 is slidably connected to a piston rod 13, and a driven wedge block 14 is fixedly installed on the lower side of the piston rod 13. A first spring 15 is fixedly connected between the driven wedge block 14 and the box body 8.

[0038] A vertical plate 16 is fixedly installed on the upper side of the base plate 1, and an electric push rod 17 is fixedly installed on one side of the vertical plate 16. The model of the electric push rod 17 is HB-DJ801. An active wedge block 18 is fixedly installed on one side of the electric push rod 17. The active wedge block 18 and the driven wedge block 14 fit together.

[0039] The upper side of the bottom plate 1 is fixedly connected to a U-shaped frame 21, and a top frame 22 is fixed on the upper side of the U-shaped frame 21. The injection pushing mechanism includes a U-shaped plate 23, one side of the top frame 22 is fastened to the U-shaped plate 23, the internal rotation of the U-shaped plate 23 is connected to a first screw 24, the outer surface of the first screw 24 is threadedly connected to a lifting plate 25 for pushing the piston push rod 7, the lower side of the top frame 22 is slidably connected to a movable pressure plate 26, one side of the movable pressure plate 26 is fastened to the piston push rod 7, two second springs 27 are fixedly connected between the top frame 22 and the movable pressure plate 26, the other side of the movable pressure plate 26 passes through the top frame 22 and extends to the upper side of the top frame 22, the other side of the movable pressure plate 26 is fixedly connected to a top plate 28, one side of the top plate 28 is connected to the lifting plate The lowering plate 25 is tightly connected, and the interior of the U-shaped plate 23 is fixedly connected to a limiting rod 29. The outer surface of the limiting rod 29 is slidably connected to the interior of the lifting plate 25. The limiting rod 29 can be used to control the movement trajectory of the lifting plate 25, so that the lifting plate 25 can move smoothly and push the elastic movable pressure plate 26 to move downward, allowing the piston push rod 7 to push out the heparin inside the piston push rod 7, so that the heparin can be injected, so as to form the entire anticoagulant pump. At the same time, the elastic force of the second spring 27 can slow down the thrust on the piston push rod 7, so that the injection work can be carried out smoothly and safely, effectively preventing blood clotting. A servo motor is fixed on the upper side of the U-shaped plate 23, and the output shaft of the servo motor is tightly connected to the first screw 24.

[0040] The medicine liquid feeding mechanism includes two liquid adding seats 30, one side of the two liquid adding seats 30 is tightly connected to the two ends of the box body 8, and the upper sides of the two liquid adding seats 30 are clamped with heparin bottles 31, and one side of the inside of the two liquid adding seats 30 is slidably connected with a sealing rod 33. The sealing rod 33 can be used to seal the discharge port inside the liquid adding seat 30, and the discharge port inside the liquid adding seat 30 can also be opened so that the medicine liquid feeding mechanism can supply liquid to the box body 8, which is easy to use. One side of the sealing rod 33 passes through the liquid adding seat 30 and extends to one side of the liquid adding seat 30. One side of the two sealing rods 33 is fixedly connected to a U-shaped seat 34, and the inside of the two U-shaped seats 34 is rotatably connected to a roller 35. A third spring 36 is fixedly connected between the two U-shaped seats 34 and the liquid adding seat 30.

[0041] An L-shaped plate 37 is fixedly connected to the upper side of the box body 8, and a cam rod 38 for squeezing the roller 35 is rotatably connected to one side of the L-shaped plate 37. A servo motor is fixedly provided on the other side of the L-shaped plate 37, and the output shaft of the servo motor is tightly connected to the cam rod 38. A top box 39 is fixedly installed on the other side of the L-shaped plate 37, and two sliding rods 40 are fixedly connected to the interior of the top box 39. The outer surfaces of the two sliding rods 40 are slidably connected to four arc-shaped splints 41 for positioning the heparin bottle 31. The interiors of the four arc-shaped splints 41 are all connected with rubber strips 43 in an array, and two fourth springs 42 are fixedly connected between the two arc-shaped splints 41.

[0042] The U-shaped frame 21 is internally connected to a double-ended screw 44, and the outer surface of the double-ended screw 44 is threadedly connected to two symmetrically distributed connecting plates 45. One side of the two connecting plates 45 is fixedly installed with a positioning arc plate 46 for fixing the syringe 6. The interior of the U-shaped frame 21 is fixedly connected to a limiting rod 2 47, and the outer surface of the limiting rod 2 47 is slidably connected to the interior of the connecting plate 45. The limiting rod 2 47 can be used to limit and guide the movement trajectory of the two connecting plates 45, so that the two connecting plates 45 can drive the two positioning arc plates 46 to move and adjust smoothly to position the syringe. 6 and the second pipeline 11, the round base 5 can also play the role of positioning the syringe 6 to ensure the stability of the syringe 6 when in use. A servo motor is fixed on one side of the U-shaped frame 21, and the output shaft of the servo motor is fastened to the double-headed screw 44. The model of the above servo motor is SMBL-60P. The one-way solenoid valve 10, the one-way solenoid valve 20, the electric push rod 17 and the servo motor are all electrically connected to the controller. The controller can be used to realize the intelligent control of the above equipment in turn to facilitate the heparin injection. The model of the controller is DATA-7133.

[0043] Two movable arc plates 50 for fixing the second pipe 11 are slidably connected to both ends of the round seat frame 5, and a fifth spring 51 is fixedly connected between the two movable arc plates 50 and the round seat frame 5. One end of the two connecting plates 45 is fixedly installed with a support plate 48, and one side of the two support plates 48 is fixedly connected with a circular plate 49 for squeezing the movable arc plate 50.

[0044] Both ends of the hemodialysis machine 2 are fixedly provided with a placement recessed plate 52 for supporting the blood drawing tube 3 and the infusion tube 4. One side of the two placement recessed plates 52 is a rotating frame 53. The top ends of the two rotating frames 53 are slidably connected to the telescopic pressure plates 54 for positioning the blood drawing tube 3 and the infusion tube 4. A sixth spring 55 is fixedly connected between the two telescopic pressure plates 54 and the rotating frame 53.

[0045] A mounting seat 56 is fixedly installed on one side of the two rotating frames 53, and a clamping plate 57 is clamped on the upper side of the two mounting seats 56. U-shaped side plates 58 are fixed on both ends of the hemodialysis machine 2. The interior of the two U-shaped side plates 58 is rotatably connected to a rotating plate 59. A seventh spring 60 is connected in an array between the two rotating plates 59 and the clamping plate 57. An insertion rod 32 for positioning the clamping plate 57 is clamped on one side of the two mounting seats 56. Through the setting of the clamping plate 57, the elastic clamping plate 57 can play an elastic support role on the rotating frame 53 and the placement concave plate 52, so that the blood drawing tube 3 and the infusion tube 4 will not bend, ensuring that the blood can circulate smoothly outside the body.

[0046] One side of the piston rod 13 passes through the box body 8 and extends to the lower side of the box body 8. The outer surface of the box body 8 is fixedly connected with a mounting plate 19, and one side of the mounting plate 19 is tightly connected to the one-way solenoid valve 2 20.

[0047] When the present invention is in use, the electric push rod 17 drives the active wedge block 18 to move and adjust, so that the active wedge block 18 can move away from the driven wedge block 14 equipped with the first spring 15, and the driven wedge block 14 drives the elastic piston rod 13 to move downward and away from the first pipe 9, so that the heparin in the box body 8 will enter the interior of the syringe 6 along the first pipe 9 and the one-way solenoid valve 10, and then the piston rod 13 is reset to seal the first pipe 9, stopping the heparin from entering the interior of the syringe 6, thereby realizing continuous liquid supply to the syringe 6, and then the output shaft of the servo motor drives the first screw 24 to rotate, so that the lifting plate 25 on the first screw 24 can drive the one-way solenoid valve 10 to move downward. The movable pressure plate 26 of the second spring 27 squeezes the piston push rod 7, so that the heparin in the syringe 6 can enter the interior of the infusion tube 4 along the injection head 12, the second pipe 11 and the one-way solenoid valve 10, which can prevent blood from clotting in the hemodialysis machine 2 and ensure the smooth flow of blood. At this time, the injection pushing mechanism, the syringe 6, the box 8 and the piston rod 13 can be used to replenish the heparin in the syringe 6, so that the heparin can be continuously injected without replacing the syringe 6, which saves time and effort in operation and does not interrupt the injection of heparin for a long time, which is beneficial to improving the anticoagulation effect of hemodialysis purification, allowing the hemodialysis purification process to proceed smoothly, and at the same time improving the working efficiency of the anticoagulation pump;

[0048] The two arc-shaped clamping plates 41 equipped with the fourth spring 42 can be used to clamp and position the heparin bottle 31, and the rubber strip 43 at the arc-shaped clamping plates 41 can increase the friction with the heparin bottle 31, so that the two heparin bottles 31 are installed more firmly. Then, the output shaft of the servo motor drives the cam rotating rod 38 to rotate, so that the top end of the cam rotating rod 38 squeezes the roller 35, which can drive the movement and adjustment of the sealing rod 33 equipped with the third spring 36, so that the elastic sealing rod 33 can be away from the discharge port of the liquid filling seat 30 to form a liquid medicine feeding mechanism. In this way, the liquid medicine feeding mechanism injects heparin into the box body 8. When the cam rotating rod 38 squeezes the other roller 35, heparin can also be injected into the box body 8, so that the box body 8 is continuously replenished with heparin, so that the entire anticoagulation pump can maintain sufficient heparin to ensure the anticoagulation effect of hemodialysis;

[0049] By allowing the output shaft of the servo motor to drive the double-ended screw 44 to rotate, the two connecting plates 45 on the double-ended screw 44 can move toward each other, so that the two connecting plates 45 can drive the two positioning arc plates 46 to clamp to the two ends of the syringe 6. Subsequently, the opposite movement of the two double-ended screws 44 will also drive the two circular plates 49 to squeeze the two movable arc plates 50 installed with the fifth spring 51, so that the two movable arc plates 50 can be clamped to the second pipe 11 and the injection head 12, so that the second pipe 11 can be tightly connected to the injection head 12, thereby enhancing the sealing during injection and preventing heparin leakage. Then, the blood drawing tube 3 and the infusion tube 4 are placed on the two placement concave plates 52, and then the two retractable pressure plates 54 installed with the sixth spring 55 squeeze and position the blood drawing tube 3 and the infusion tube 4, and the card plate 57 and the rotating plate 59 installed with the seventh spring 60 will also elastically support the rotating frame 53 to ensure the positioning effect of the two retractable pressure plates 54, so that the blood drawing tube 3 and the infusion tube 4 are not easy to bend and affect the blood purification process.

[0050] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. An anticoagulant pump, comprising a base plate (1), an injection pushing mechanism and a liquid medicine feeding mechanism, characterized in that: A hemodialysis machine (2) is fixedly mounted on the upper side of the base plate (1), a blood draw tube (3) is fixedly mounted on one side of the hemodialysis machine (2), and an infusion tube (4) is fixedly mounted on the other side of the hemodialysis machine (2). A round base frame (5) and a box body (8) are fixedly connected to the upper side of the base plate (1), a syringe (6) is clamped inside the round base frame (5), an injection head (12) is fixedly mounted on the lower side of the syringe (6), and a piston push rod (7) for injecting heparin is slidably mounted inside the syringe (6); A first pipe (9) is fixedly connected between the syringe (6) and the box (8), a one-way solenoid valve (20) is fixedly provided on the first pipe (9), a second pipe (11) is clamped on the outer surface of the injection head (12), a one-way solenoid valve (10) is fixedly provided on the infusion tube (4), one side of the one-way solenoid valve (10) is tightly connected to the second pipe (11), a piston rod (13) is slidably connected to the bottom end of the box (8), a driven wedge block (14) is fixedly installed on the lower side of the piston rod (13), and a first spring (15) is fixedly connected between the driven wedge block (14) and the box (8).

2. An anticoagulation pump according to claim 1, characterized in that: A vertical plate (16) is fixedly mounted on the upper side of the base plate (1), an electric push rod (17) is fixedly mounted on one side of the vertical plate (16), an active wedge block (18) is fixedly mounted on one side of the electric push rod (17), and the active wedge block (18) and the driven wedge block (14) are in contact with each other.

3. The anticoagulation pump according to claim 1, characterized in that: The upper side of the bottom plate (1) is fixedly connected to a U-shaped frame (21), and the upper side of the U-shaped frame (21) is fixedly provided with a top frame (22). The injection pushing mechanism includes a U-shaped plate (23), one side of the top frame (22) is tightly connected to the U-shaped plate (23), the interior of the U-shaped plate (23) is rotatably connected to a first screw (24), the outer surface of the first screw (24) is threadedly connected to a lifting plate (25) for pushing the piston push rod (7), the lower side of the top frame (22) is slidably connected to a movable pressing plate (26), one side of the movable pressing plate (26) is tightly connected to the piston push rod (7), and the top frame (22) is rotatably connected to the movable pressing plate (26). Two second springs (27) are fixedly connected between the movable pressure plates (26), the other side of the movable pressure plate (26) passes through the top frame (22) and extends to the upper side of the top frame (22), the other side of the movable pressure plate (26) is fixedly connected with a top plate (28), one side of the top plate (28) is fastened to the lifting plate (25), the interior of the U-shaped plate (23) is fixedly connected with a limiting rod (29), the outer surface of the limiting rod (29) is slidably connected to the interior of the lifting plate (25), a servo motor is fixedly provided on the upper side of the U-shaped plate (23), and the output shaft of the servo motor is fastened to the first lead screw (24).

4. The anticoagulation pump according to claim 1, characterized in that: The liquid medicine feeding mechanism comprises two liquid adding seats (30), one side of the two liquid adding seats (30) is tightly connected to the two ends of the box (8), the upper side of the two liquid adding seats (30) is clamped with a heparin medicine bottle (31), one side of the interior of the two liquid adding seats (30) is slidably connected to a sealing rod (33), one side of the sealing rod (33) passes through the liquid adding seat (30) and extends to one side of the liquid adding seat (30), one side of the two sealing rods (33) is fixedly connected to a U-shaped seat (34), the interior of the two U-shaped seats (34) is rotatably connected to a roller (35), and a third spring (36) is fixedly connected between the two U-shaped seats (34) and the liquid adding seat (30).

5. The anticoagulation pump according to claim 1, characterized in that: An L-shaped plate (37) is fixedly connected to the upper side of the box body (8), and a cam rotating rod (38) for squeezing the roller (35) is rotatably connected to one side of the L-shaped plate (37). A servo motor is fixedly provided on the other side of the L-shaped plate (37), and the output shaft of the servo motor is tightly connected to the cam rotating rod (38). A top box (39) is fixedly installed on the other side of the L-shaped plate (37). Two sliding rods (40) are fixedly connected to the interior of the top box (39), and the outer surfaces of the two sliding rods (40) are slidably connected to four arc-shaped clamping plates (41) for positioning the heparin medicine bottle (31). The interiors of the four arc-shaped clamping plates (41) are all connected in an array with rubber strips (43), and two fourth springs (42) are fixedly connected between the two arc-shaped clamping plates (41).

6. The anticoagulation pump according to claim 3, characterized in that: The U-shaped frame (21) is internally rotatably connected to a double-ended lead screw (44), and the outer surface of the double-ended lead screw (44) is threadedly connected to two symmetrically distributed connecting plates (45). One side of each connecting plate (45) is fixedly mounted with a positioning arc plate (46) for fixing the syringe (6). The U-shaped frame (21) is internally fixedly connected to a second limiting rod (47), and the outer surface of the second limiting rod (47) is slidably connected to the inside of the connecting plate (45). A servo motor is fixedly provided on one side of the U-shaped frame (21), and the output shaft of the servo motor is tightly connected to the double-ended lead screw (44).

7. The anticoagulation pump according to claim 1, characterized in that: Two movable arc plates (50) for fixing the second pipe (11) are slidably connected to both ends of the circular seat frame (5), a fifth spring (51) is fixedly connected between the two movable arc plates (50) and the circular seat frame (5), one end of each of the two connecting plates (45) is fixedly mounted with a support plate (48), and one side of each of the two support plates (48) is fixedly connected with a circular plate (49) for pressing the movable arc plate (50).

8. The anticoagulation pump according to claim 1, characterized in that: Both ends of the hemodialysis machine (2) are fixedly provided with placement recessed plates (52) for supporting the blood draw tube (3) and the infusion tube (4); one side of the two placement recessed plates (52) is provided with a rotating frame (53); the top ends of the two rotating frames (53) are slidably connected to a telescopic pressure plate (54) for positioning the blood draw tube (3) and the infusion tube (4); and a sixth spring (55) is fixedly connected between the two telescopic pressure plates (54) and the rotating frame (53).

9. The anticoagulation pump according to claim 8, characterized in that: One side of each of the two rotating frames (53) is fixedly mounted with a mounting seat (56), and the upper sides of each of the two mounting seats (56) are clamped with a clamping plate (57). Both ends of the hemodialysis machine (2) are fixedly provided with a U-shaped side plate (58), and the interiors of the two U-shaped side plates (58) are rotatably connected with a rotating plate (59). A seventh spring (60) is connected in an array between the two rotating plates (59) and the clamping plate (57), and one side of each of the two mounting seats (56) is clamped with an insertion rod (32) for positioning the clamping plate (57).

10. The anticoagulation pump according to claim 1, characterized in that: One side of the piston rod (13) passes through the box body (8) and extends to the lower side of the box body (8). The outer surface of the box body (8) is fixedly connected with a mounting plate (19), and one side of the mounting plate (19) is tightly connected to the one-way solenoid valve 2 (20).

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