Concentration adjusting device for hemodialysis

Abstract

The invention relates to the technical field of hemodialysis, in particular to a concentration adjusting device for hemodialysis, which comprises a mounting box, a hemodialyzer is arranged in the mounting box, one end of the hemodialyzer is connected with a blood inlet pipe, the other end of the hemodialyzer is connected with a blood outlet pipe, the blood inlet pipe is connected with a blood drawing assembly, and the blood drawing assembly is connected with a blood outlet pipe. The blood drawing assembly is connected with a blood drawing pipe, the blood outlet pipe is connected with a blood transfusion pipe, the blood drawing pipe and the blood transfusion pipe penetrate through the outer side of the mounting box and are provided with needles, a liquid inlet pipe is arranged at the position, close to the blood outlet pipe, of the hemodialyzer, and a liquid outlet pipe is arranged at the position, close to the blood inlet pipe, of the hemodialyzer. The liquid inlet pipe is communicated with a dialysate concentration adjusting assembly, the liquid outlet pipe is communicated with a waste liquid collecting tank, and the dialysate concentration adjusting assembly adjusts the dialysate concentration according to the requirements of a patient and injects the dialysate into the hemodialyzer from the liquid inlet pipe, so that the purification quality of blood of the patient is ensured, and the effect of adjuvant therapy on the patient is achieved; and a proper supplementary regulation effect is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of hemodialysis, and in particular to a concentration regulating device for hemodialysis. Background Art

[0002] The hemodialysis machine is divided into two parts: the blood monitoring alarm system and the dialysate supply system. Its working principle is: the dialysis concentrate and dialysis water are prepared into qualified dialysis fluid through the dialysis fluid supply system, and then pass through the hemodialyzer to undergo solute diffusion, infiltration and ultrafiltration with the patient's blood drawn out by the blood monitoring alarm system; the patient's blood after the action returns to the patient's body through the blood monitoring alarm system, and at the same time, the liquid used for dialysis is discharged from the dialysis fluid supply system as waste liquid; this cycle is repeated continuously to complete the entire dialysis process.

[0003] When in use, an existing hemodialysis machine generally purifies the patient's blood through ultrafiltration to achieve the effect of expelling toxins from the water. For example, application number CN201410470509.2 discloses a hemodialysis machine that can independently adjust the dialysate concentration, including a blood monitoring alarm system and a dialysate supply system. The blood monitoring alarm system includes a blood pump, a heparin pump, an arteriovenous pressure monitor, and an air monitor. The blood pump, the heparin pump, the arteriovenous pressure monitor, and the air monitor are electrically connected in sequence. However, in the above technology, it is difficult for the dialysate independent adjustment system to perform appropriate replenishment adjustments. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a concentration regulating device for hemodialysis to solve the problem that the dialysate independent adjustment system is difficult to perform appropriate replenishment regulation when the existing hemodialysis machine is in use.

[0005] Based on the above purpose, the present invention provides a concentration adjustment device for hemodialysis, including an installation box, a hemodialyzer is installed inside the installation box, one end of the hemodialyzer is connected to an inlet blood vessel, the other end is connected to an outlet blood vessel, the inlet blood vessel is connected to a blood drawing assembly, the blood drawing assembly is connected to a blood drawing blood vessel, the outlet blood vessel is connected to a blood transfusion blood vessel, both the blood drawing blood vessel and the blood transfusion blood vessel are provided with needles passing through the outside of the installation box, a place of the hemodialyzer near the outlet blood vessel is provided with a liquid inlet pipe, a place of the hemodialyzer near the inlet blood vessel is provided with a liquid outlet pipe, the liquid inlet pipe is connected to a dialysate concentration adjustment assembly, and the liquid outlet pipe is connected to a waste liquid collection tank;

[0006] Among them, the dialysate concentration regulating component adjusts the dialysate concentration according to the patient's needs and injects it into the hemodialyzer from the liquid inlet tube to ensure the purification quality of the patient's blood.

[0007] Preferably, the blood drawing assembly comprises:

[0008] A blood pump, one end of which is connected to the blood inlet blood and the other end of which is connected to the blood withdrawal blood;

[0009] A first mounting frame, fixedly mounted on the bottom of the mounting box, wherein the top of the first mounting frame is fixedly connected to the bottom of the blood pump;

[0010] The anticoagulant tank is fixedly mounted on the top of the first mounting frame, and a portion of the bottom of the anticoagulant tank is connected to the blood pump.

[0011] Preferably, an insulation box is fixedly arranged on the outside of the installation box, the blood drawing tube and the blood transfusion tube both pass through the insulation box, and a silica gel electric heating sheet is installed on the inner wall of the insulation box.

[0012] Preferably, two buckles are fixedly provided on an inner wall of the thermal insulation box, and the two ends of each buckle are respectively sleeved on the blood drawing blood and the blood transfusion blood. Both sides of the thermal insulation box are obliquely provided with waist-shaped through holes. A pressure wheel is provided inside the thermal insulation box, and the two ends of the pressure wheel are respectively arranged in the waist-shaped through holes. A driving member for driving the pressure wheel to move in the waist-shaped through holes is provided on the outside of the thermal insulation box. When the pressure wheel is located at one end of the waist-shaped through hole, the pressure wheel squeezes the blood drawing blood and the blood transfusion blood, so that the blood drawing blood and the blood transfusion blood are at the minimum blood flow rate. When the pressure wheel is located at the other end of the waist-shaped through hole, the blood drawing blood and the blood transfusion blood are at the maximum blood flow rate.

[0013] Preferably, the driving member comprises:

[0014] A connector, sleeved on the shaft of the pressing wheel, with a guide rod fixedly provided on one side of the connector;

[0015] The first cylinder is fixedly arranged on the outer side of the heat preservation box. The telescopic rod of the first cylinder is fixedly arranged with a first sliding block, and the first sliding block is sleeved on the guide rod.

[0016] Preferably, the dialysate concentration regulating component comprises:

[0017] A liquid pump, one end of which is connected to the liquid inlet pipe, and the other end of which is connected to a mixing tank;

[0018] Two quantitative infusion components are respectively arranged on one side of the mixing tank, one end of each quantitative infusion component is connected to the mixing tank, and the other end is respectively connected to a dialysate tank and an RO water tank.

[0019] Preferably, the quantitative infusion assembly comprises:

[0020] A measuring cylinder, one end of which is provided with a liquid inlet end, and the liquid inlet end is used to connect to a dialysate tank or an RO water tank;

[0021] A second cylinder is fixedly mounted on one end of the metering cylinder away from the liquid inlet end, and a telescopic rod of the second cylinder passes through the metering cylinder and is fixedly mounted with a piston;

[0022] A partition assembly is connected and arranged on the outer wall of one end of the metering cylinder close to the liquid inlet end;

[0023] The liquid outlet end is connected and arranged at a place of the metering cylinder close to the partition assembly, and the liquid outlet end is connected with the mixing tank.

[0024] Preferably, the partition assembly comprises:

[0025] A box body, one end of which is fixed on the outer wall of the metering cylinder, the box body is communicated with the metering cylinder, and a rectangular through hole is provided on one side of the box body;

[0026] A baffle adapted to the inner shape of the metering cylinder is slidably connected and arranged in the box body, one end of the baffle is provided with a connecting block, and the connecting block is slidably connected and arranged in the rectangular through hole;

[0027] A second sliding block is slidably connected and arranged on the outer wall of the metering cylinder;

[0028] A connecting arm, two ends of which are respectively hinged to the top of the second sliding block and the connecting block;

[0029] The third cylinder is fixed on the outer wall of the metering cylinder, and the telescopic rod of the third cylinder is fixedly connected to one side of the second sliding block.

[0030] Preferably, a control panel for controlling all electrical equipment inside the installation box is fixedly provided on the top of the installation box.

[0031] The beneficial effects of the present invention are as follows: according to the patient's condition, during the use of the hemodialyzer, the dialysate concentration regulating component controls the metering and concentration of the dialysate entering the hemodialyzer to ensure the purification quality of the patient's blood, thereby achieving the effect of auxiliary treatment for the patient and realizing the role of appropriate supplementary regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the internal structure of the installation box according to an embodiment of the present invention;

[0035] Figure 3This is a schematic diagram of the internal structure of an incubator according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the three-dimensional structure of a quantitative infusion assembly according to an embodiment of the present invention;

[0037] Figure 5 It is a schematic cross-sectional view of the quantitative infusion assembly according to an embodiment of the present invention.

[0038] The markings in the figure are:

[0039] 1. Installation box; 2. Hemodialyzer; 3. Inlet blood vessel; 4. Outlet blood vessel; 5. Blood extraction blood vessel; 6. Blood transfusion blood vessel; 7. Needle; 8. Liquid inlet pipe; 9. Liquid outlet pipe; 10. Waste liquid collection tank; 11. Blood pump; 12. First installation frame; 13. Anticoagulant tank; 14. Incubator; 15. Silicone electric heating sheet; 16. Buckle; 17. Waist-shaped through hole; 18. Press wheel; 19. Driving member; 20. Connector; 21. Guide rod; 22 , the first cylinder; 23, the first slider; 24, the liquid pump; 25, the mixing tank; 26, the quantitative infusion component; 27, the dialysate tank; 28, the RO water tank; 29, the metering cylinder; 30, the liquid inlet end; 31, the second cylinder; 32, the piston; 33, the liquid outlet end; 34, the box; 35, the rectangular through hole; 36, the baffle; 37, the connecting block; 38, the second slider; 39, the connecting arm; 40, the third cylinder; 41, the control panel. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0041] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] like Figures 1 to 5As shown, a concentration regulating device for hemodialysis comprises an installation box 1, wherein a hemodialyzer 2 is installed inside the installation box 1, wherein one end of the hemodialyzer 2 is connected to an inlet blood vessel 3, and the other end is connected to an outlet blood vessel 4, wherein the inlet blood vessel 3 is connected to a blood drawing assembly, wherein the blood drawing assembly is connected to a blood drawing blood vessel 5, wherein the outlet blood vessel 4 is connected to a blood transfusion blood vessel 6, wherein both the blood drawing blood vessel 5 and the blood transfusion blood vessel 6 are provided with a needle 7 passing through the outer side of the installation box 1, wherein a portion of the hemodialyzer 2 close to the outlet blood vessel 4 is provided with a liquid inlet pipe 8, wherein a portion of the hemodialyzer 2 close to the inlet blood vessel 3 is provided with a liquid outlet pipe 9, wherein the liquid inlet pipe 8 is connected to a dialysate concentration regulating assembly, and wherein the liquid outlet pipe 9 is connected to a waste liquid collecting tank 10;

[0043] The dialysate concentration regulating component adjusts the dialysate concentration according to the patient's needs and injects the dialysate into the hemodialyzer 2 from the liquid inlet pipe 8 to ensure the purification quality of the patient's blood.

[0044] For example, before use, the dialysate concentration regulating component is controlled to control the metering and concentration of the dialysate according to the patient's condition, and then the needle 7 of the blood drawing tube 5 and the blood transfusion tube 6 is inserted into the patient's blood vessel. The patient's blood is introduced into the hemodialyzer 2 through the operation of the blood drawing component. At this time, the adjusted dialysate is introduced into the hemodialyzer 2 through the dialysate concentration regulating component to purify the patient's blood. The treated blood is returned to the patient's body through the blood transfusion tube 6, and the treated waste liquid enters the waste liquid collection tank 10 through the liquid outlet pipe 9, which is convenient for later processing. The present invention controls the metering and concentration of the dialysate entering the hemodialyzer 2 through the dialysate concentration regulating component to ensure the purification quality of the patient's blood, thereby achieving the effect of auxiliary treatment for the patient and realizing the role of suitable supplementary regulation.

[0045] As an optional embodiment, the blood drawing component includes:

[0046] A blood pump 11, one end of which is connected to the blood inlet 3, and the other end of which is connected to the blood withdrawal 5;

[0047] A first mounting frame 12 is fixedly mounted on the bottom of the mounting box 1, and a top of the first mounting frame 12 is fixedly connected to a bottom of the blood pump 11;

[0048] The anticoagulant tank 13 is fixedly mounted on the top of the first mounting frame 12 , and a portion of the bottom of the anticoagulant tank 13 is connected to the blood pump 11 .

[0049] For example, the blood pump 11 drives the blood drawing blood 5, the hemodialyzer 2 and the blood transfusion blood 6 to circulate and transport blood. At the same time, an anticoagulant is introduced during the blood drawing process to reduce the coagulation ability of the blood and avoid pipeline blockage.

[0050] As an optional embodiment, a heat preservation box 14 is fixedly provided on the outer side of the installation box 1 , and the blood drawing blood 5 and the blood transfusion blood 6 both pass through the heat preservation box 14 . A silica gel electric heating sheet 15 is installed on the inner wall of the heat preservation box 14 .

[0051] For example, by placing a portion of the blood drawing blood 5 and the blood transfusion blood 6 into an incubator 14, a silicone heating sheet 15 is disposed in the incubator 14, and the silicone heating sheet 15 is operated to heat the blood drawing blood 5 and the blood transfusion blood 6, thereby further reducing the coagulation ability of the blood.

[0052] As an optional embodiment, two buckles 16 are fixedly provided on an inner wall of the thermal insulation box 14, and the two ends of each buckle 16 are respectively sleeved on the blood drawing blood 5 and the blood transfusion blood 6, and waist-shaped through holes 17 are obliquely provided on both sides of the thermal insulation box 14. A pressing wheel 18 is provided inside the thermal insulation box 14, and the two ends of the pressing wheel 18 are respectively arranged in the waist-shaped through holes 17, and a driving member 19 for driving the pressing wheel 18 to move in the waist-shaped through holes 17 is provided on the outer side of the thermal insulation box 14. When the pressing wheel 18 is located at one end of the waist-shaped through hole 17, the pressing wheel 18 squeezes the blood drawing blood 5 and the blood transfusion blood 6, so that the blood drawing blood 5 and the blood transfusion blood 6 are at the minimum blood flow rate, and when the pressing wheel 18 is located at the other end of the waist-shaped through hole 17, the blood drawing blood 5 and the blood transfusion blood 6 are at the maximum blood flow rate.

[0053] As an optional embodiment, the driving member 19 includes:

[0054] A connector 20 is sleeved on the shaft of the pressing wheel 18, and a guide rod 21 is fixedly provided on one side of the connector 20;

[0055] The first cylinder 22 is fixedly mounted on the outer side of the heat preservation box 14 . A first sliding block 23 is fixedly mounted on the telescopic rod of the first cylinder 22 . The first sliding block 23 is sleeved on the guide rod 21 .

[0056] For example, in the initial stage, the shaft of the pressing wheel 18 is located at one end of the waist-shaped through hole 17. At this time, the pressing wheel 18 is in contact with the blood drawing blood 5 and the blood transfusion blood 6 without squeezing, and the flow rate of the blood drawing blood 5 and the blood transfusion blood 6 is at the maximum value. The first cylinder 22 drives the first slider 23 to move, the first slider 23 drives the guide rod 21 to move, the guide rod 21 drives the connector 20 to move, and the connector 20 drives the pressing wheel 18 to move in the inclined waist-shaped through hole 17 to adjust the squeezing degree of the pressing wheel 18 and the blood drawing blood 5 and the blood transfusion blood 6, thereby controlling the flow rate of the blood drawing blood 5 and the blood transfusion blood 6 from the maximum value to the minimum value.

[0057] As an optional embodiment, the dialysate concentration adjustment component includes:

[0058] A liquid pump 24, one end of which is connected to the liquid inlet pipe 8, and the other end of which is connected to a mixing tank 25;

[0059] Two quantitative infusion components 26 are respectively arranged on one side of the mixing tank 25. One end of each quantitative infusion component 26 is connected to the mixing tank 25, and the other end is respectively connected to a dialysate tank 27 and an RO water tank 28.

[0060] As an optional embodiment, the quantitative infusion component 26 includes:

[0061] A metering cylinder 29, one end of which is provided with a liquid inlet end 30, and the liquid inlet end 30 is used to connect with the dialysate tank 27 or the RO water tank 28;

[0062] A second cylinder 31 is fixedly mounted on one end of the metering cylinder 29 away from the liquid inlet end 30, and a telescopic rod of the second cylinder 31 passes through the metering cylinder 29 and is fixedly mounted with a piston 32;

[0063] A partition assembly is connected and arranged on the outer wall of one end of the metering cylinder 29 close to the liquid inlet end 30;

[0064] The liquid outlet end 33 is connected to a portion of the metering cylinder 29 close to the partition assembly, and the liquid outlet end 33 is connected to the mixing tank 25 .

[0065] As an optional embodiment, the partition assembly includes:

[0066] A box body 34, one end of which is fixed on the outer wall of the metering cylinder 29, the box body 34 is connected to the metering cylinder 29, and a rectangular through hole 35 is provided on one side of the box body 34;

[0067] A baffle 36 adapted to the inner shape of the metering cylinder 29 is slidably connected and arranged in the box body 34, and a connecting block 37 is provided at one end of the baffle 36, and the connecting block 37 is slidably connected and arranged in the rectangular through hole 35;

[0068] A second sliding block 38 is slidably connected to the outer wall of the metering cylinder 29;

[0069] A connecting arm 39, two ends of which are respectively hinged to the top of the second sliding block 38 and the connecting block 37;

[0070] The third cylinder 40 is fixedly mounted on the outer wall of the metering cylinder 29 , and the telescopic rod of the third cylinder 40 is fixedly connected to one side of the second sliding block 38 .

[0071] For example, in the initial stage, the baffle 36 completely enters the box body 34, and the piston 32 contacts the liquid inlet end 30 of the metering cylinder 29. According to the patient's condition, the second cylinder 31 drives the piston 32 to move, so that the piston 32 introduces the dialysate into the metering cylinder 29 with negative pressure. After the quantitative dialysate is introduced, the third cylinder 40 drives the second slider 38 to move, and the second slider 38 drives the connecting block 37 to move in the rectangular through hole 35 through the connecting arm 39, so that the connecting block 37 drives the baffle to move downward, so that the baffle The liquid inlet 30 is closed. At this time, the second cylinder 31 is reset to push the piston 32 to move, so that the piston 32 squeezes the dialysate to the liquid outlet 33, and introduces it into the mixing tank 25 from the liquid outlet 33. The dialysate in the mixing tank 25 is introduced into the liquid inlet pipe 8 of the hemodialyzer 2 through the operation of the liquid pump 24. The steps of introducing RO water into the mixing tank 25 are the same. RO water is used to reduce the concentration of the dialysate. According to the patient's condition, the mixing amount of the dialysate and RO water is controlled, thereby adjusting the concentration of the dialysate to suit the patient's use.

[0072] As an optional embodiment, a control panel 41 for controlling all electrical devices inside the installation box 1 is fixedly provided on the top of the installation box 1 .

[0073] For example, the control panel 41 is used to control the operation of all electrical equipment in the installation box 1. A temperature monitor is provided in the control panel 41. The temperature monitor senses the temperature around the equipment to control the operation of the silicone heating plate 15 in the insulation box 14. The dialysate concentration value required by the patient is input through the control panel 41. According to the output instruction, the two quantitative infusion components 26 are controlled to work to obtain the dialysate concentration required by the patient.

[0074] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A concentration adjustment device for hemodialysis, comprising an installation box (1), wherein a hemodialyzer (2) is installed inside the installation box (1), one end of the hemodialyzer (2) is connected to an inlet blood vessel (3), and the other end is connected to an outlet blood vessel (4), characterized in that: The blood inlet (3) is connected to a blood drawing assembly, the blood drawing assembly is connected to a blood drawing blood vessel (5), the blood outlet (4) is connected to a blood transfusion blood vessel (6), the blood drawing blood vessel (5) and the blood transfusion blood vessel (6) are both provided with a needle (7) passing through the outside of the installation box (1), the blood dialyzer (2) is provided with a liquid inlet pipe (8) at a location close to the blood outlet (4), the blood dialyzer (2) is provided with a liquid outlet pipe (9) at a location close to the blood inlet (3), the liquid inlet pipe (8) is connected to a dialysate concentration adjustment assembly, and the liquid outlet pipe (9) is connected to a waste liquid collection tank (10); The dialysate concentration regulating component adjusts the dialysate concentration according to the patient's needs and injects the dialysate into the hemodialyzer (2) from the liquid inlet pipe (8) to ensure the purification quality of the patient's blood.

2. A concentration adjustment device for hemodialysis according to claim 1, characterized in that: The blood drawing assembly comprises: A blood pump (11), one end of which is connected to the blood inlet (3) and the other end of which is connected to the blood withdrawal (5); A first mounting frame (12) is fixedly mounted on the bottom of the mounting box (1), and the top of the first mounting frame (12) is fixedly connected to the bottom of the blood pump (11); The anticoagulant tank (13) is fixedly mounted on the top of the first mounting frame (12), and a portion of the bottom of the anticoagulant tank (13) is connected to the blood pump (11).

3. A concentration adjustment device for hemodialysis according to claim 1, characterized in that: An insulation box (14) is fixedly arranged on the outside of the installation box (1), the blood drawing tube (5) and the blood transfusion tube (6) both pass through the insulation box (14), and a silica gel electric heating sheet (15) is installed on the inner wall of the insulation box (14).

4. A concentration adjustment device for hemodialysis according to claim 3, characterized in that: Two buckles (16) are fixedly arranged on an inner wall of the heat preservation box (14), and the two ends of each buckle (16) are respectively sleeved on the blood drawing blood (5) and the blood transfusion blood (6). Both sides of the heat preservation box (14) are obliquely provided with waist-shaped through holes (17). A pressing wheel (18) is arranged inside the heat preservation box (14), and the two ends of the pressing wheel (18) are respectively arranged in the waist-shaped through holes (17). A driving member (19) for driving the pressing wheel (18) to move in the waist-shaped through holes (17) is arranged on the outer side of the heat preservation box (14). When the pressing wheel (18) is located at one end of the waist-shaped through hole (17), the pressing wheel (18) squeezes the blood drawing blood (5) and the blood transfusion blood (6), so that the blood drawing blood (5) and the blood transfusion blood (6) are at the minimum blood flow rate. When the pressing wheel (18) is located at the other end of the waist-shaped through hole (17), the blood drawing blood (5) and the blood transfusion blood (6) are at the maximum blood flow rate.

5. A concentration adjustment device for hemodialysis according to claim 4, characterized in that: The driving member (19) comprises: A connecting head (20) is sleeved on the shaft of the pressing wheel (18), and a guide rod (21) is fixedly provided on one side of the connecting head (20); The first cylinder (22) is fixedly arranged on the outside of the heat preservation box (14); a first sliding block (23) is fixedly arranged on the telescopic rod of the first cylinder (22); and the first sliding block (23) is sleeved on the guide rod (21).

6. A concentration adjustment device for hemodialysis according to claim 1, characterized in that: The dialysate concentration regulating component comprises: A liquid pump (24), one end of which is connected to the liquid inlet pipe (8) and the other end of which is connected to a mixing tank (25); Two quantitative infusion components (26) are respectively arranged on one side of the mixing tank (25); one end of each quantitative infusion component (26) is connected to the mixing tank (25), and the other end is respectively connected to a dialysate tank (27) and an RO water tank (28).

7. A concentration adjustment device for hemodialysis according to claim 6, characterized in that: The quantitative infusion assembly (26) comprises: A metering cylinder (29), one end of which is provided with a liquid inlet (30), wherein the liquid inlet (30) is used to be connected to a dialysate tank (27) or an RO water tank (28); A second cylinder (31) is fixedly mounted on one end of the metering cylinder (29) away from the liquid inlet end (30); a telescopic rod of the second cylinder (31) passes through the metering cylinder (29) and is fixedly mounted with a piston (32); A partition assembly is arranged on the outer wall of one end of the metering cylinder (29) close to the liquid inlet end (30); The liquid outlet end (33) is connected to a location of the metering cylinder (29) close to the partition assembly, and the liquid outlet end (33) is connected to the mixing tank (25).

8. A concentration adjustment device for hemodialysis according to claim 7, characterized in that: The partition assembly comprises: A box body (34), one end of which is fixedly mounted on the outer wall of the metering cylinder (29), the box body (34) is connected to the metering cylinder (29), and a rectangular through hole (35) is provided on one side of the box body (34); A baffle (36) adapted to the internal shape of the metering cylinder (29) is slidably connected and arranged in the box body (34); a connecting block (37) is provided at one end of the baffle (36); and the connecting block (37) is slidably connected and arranged in the rectangular through hole (35); A second sliding block (38) is slidably connected and arranged on the outer wall of the metering cylinder (29); A connecting arm (39), both ends of which are respectively hinged to the top of the second sliding block (38) and the connecting block (37); The third cylinder (40) is fixedly mounted on the outer wall of the metering cylinder (29), and the telescopic rod of the third cylinder (40) is fixedly connected to one side of the second sliding block (38).

9. A concentration adjustment device for hemodialysis according to claim 1, characterized in that: A control panel (41) for controlling all electrical equipment inside the installation box (1) is fixedly provided on the top of the installation box (1).

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