Blood purification device

Abstract

Provided is a blood purification device with which the processing status of blood purification treatment is easily visible. In the present invention, a blood purification device (1) is roughly configured to comprise: a blood circuit in which the blood (L7) of a patient (9) circulates extracorporeally through a dialyzer (5); a dialysate supply / discharge unit (4) through which a liquid containing a dialysate (L4) as a liquid type flows, and to which a prescribed component removed from the blood (L7) extracorporeally circulated through the blood circuit is discharged; a display input unit (7) that displays, as a background image (73), a liquid image (730) that imitates a liquid; and a control unit (8) for controlling processing of a fluid flowing in the blood circuit and / or the dialysate supply / discharge unit (4), and controlling the display input unit (7) so as to vary the height of the liquid surface (73a) of the liquid image (730) in the background image (73) in accordance with the fluid processing status in a blood purification treatment.

Description

Blood purification device

[0001] The present invention relates to a blood purification device.

[0002] As a conventional technique, a display system for a blood purification apparatus is known, which has a screen that displays the details of each process in the blood purification apparatus and is configured so that the background color of the screen can be set to a different background color for each process (see, for example, Patent Document 1).

[0003] This conventional display system for blood purification apparatus changes the background color for each step, making it possible to clearly grasp the current step at a glance.

[0004] Japanese Patent Application Laid-Open No. 2004-313324

[0005] In this conventional display system for blood purification apparatus, the background color only changes for each process, so the processing status of the current process cannot be visually confirmed from the background alone.

[0006] Therefore, an object of the present invention is to provide a blood purification device that allows easy visual confirmation of the processing status of blood purification treatment.

[0007] In order to achieve the above-mentioned object, the present invention provides a blood circuit in which a patient's blood is circulated extracorporeally via a blood purifier, a piping section through which a liquid including a dialysis solution flows and through which specific components removed from the blood circulated extracorporeally in the blood circuit are discharged, a display section that displays a liquid image simulating the liquid as a background image, and a control section that controls the processing of the fluid flowing in at least one of the blood circuit and the piping section, and controls the display section to change the liquid level of the liquid image in the background image depending on the processing status of the fluid.

[0008] According to the present invention, the processing status of blood purification treatment can be easily visually confirmed.

[0009] FIG. 1A is an example of a display input unit of a blood purification apparatus. FIG. 1B is a diagram illustrating an example of a background image. FIG. 2A is an example of a block diagram of a blood purification apparatus. FIG. 2B is a diagram illustrating an example of the flow of dialysis fluid and blood. FIG. 3A is a diagram illustrating an example of a stepwise display of a background image. FIG. 3B is a diagram illustrating an example of a background image when blood purification treatment is stopped. FIG. 4A is a diagram illustrating an example of a transition of a background image from the start to the end of a water removal treatment. FIG. 4B is a diagram illustrating an example of a transition of a background image from the start to the end of a water removal treatment. FIG. 4C is a diagram illustrating an example of a transition of a background image from the start to the end of a water removal treatment. FIG. 4D is a diagram illustrating an example of a transition of a background image from the start to the end of a water removal treatment. FIG. 5A is a diagram illustrating an example of a change in a liquid image due to differences in water removal speed. FIG. 5B is a diagram illustrating an example of a change in a liquid image due to differences in water removal speed. FIG. 5C is a diagram illustrating an example of a change in a liquid image due to differences in water removal speed. FIG. 5D is a diagram illustrating an example of a change in a liquid image due to differences in water removal speed. FIG. 5E is a diagram illustrating an example of a change in a liquid image due to differences in water removal speed. FIG. 5F is a diagram showing an example of how a liquid image changes depending on the water removal speed. FIG. 5G is a diagram showing an example of how a liquid image changes depending on the water removal speed. FIG. 6A is a diagram for explaining an example of how a liquid image changes depending on the modified example. FIG. 6B is a diagram for explaining an example of how a liquid image changes depending on the modified example. FIG. 6C is a diagram for explaining an example of how a liquid image changes depending on the modified example. FIG. 7A is a diagram showing an example of how a toxin image is superimposed on a liquid image depending on the modified example. FIG. 7B is a diagram showing an example of how a toxin image is superimposed on a liquid image depending on the modified example. FIG. 8 is a flowchart showing an example of water removal processing of a blood purification apparatus. FIG. 9A is an example of a perspective view of the extracorporeal circulation unit of the blood purification apparatus when attached to the dialysate supply and discharge unit. FIG. 9B is an example of a perspective view of the extracorporeal circulation unit when detached from the dialysate supply and discharge unit. FIG. 10 is an example of a block diagram of a blood purification apparatus in which the extracorporeal circulation unit and the dialysate supply and discharge unit are separate entities.

[0010] [Embodiment] (Overview of blood purification device 1) Fig. 1A is an example of a display / input unit of a blood purification device according to an embodiment, and Fig. 1B is a diagram illustrating an example of a background image displayed by the display / input unit. Fig. 2A is an example of a block diagram of a blood purification device according to an embodiment, and Fig. 2B is a diagram illustrating an example of the flow of dialysate and blood in the blood purification device. Note that in each diagram according to the embodiment described below, the ratios and shapes between figures may differ from the actual ratios and shapes. Furthermore, in Fig. 2A, arrows indicate the flow of main information. Furthermore, in Fig. 2B and Fig. 10, arrows indicate the flow of main fluids.

[0011] As shown in Figures 1A and 1B, the blood purification device 1 of this embodiment is configured to change the background image 73 displayed on the display input unit 7 as a display unit depending on the processing status of the blood purification treatment, so that patients and medical professionals can easily see the processing status of preparation for blood purification treatment, during blood purification treatment, and post-treatment of blood purification treatment even from a distance.

[0012] Specifically, the blood purification device 1 purifies blood L of a patient 9 via a dialyzer 5 as a blood purifier. ７ The blood circuit in which the dialysate is circulated extracorporeally is ４ The liquid containing the blood flows, and the blood L circulated extracorporeally in the blood circuit ７ The system is generally configured to include a dialysate supply / discharge unit 4 as a piping unit through which predetermined components removed from the dialysate are discharged, a display / input unit 7 that displays a liquid image 730 simulating a liquid as a background image 73, and a control unit 8 that controls the processing of the fluid flowing in at least one of the blood circuit and the dialysate supply / discharge unit 4, and controls the display / input unit 7 to change the height of the liquid surface 73a of the liquid image 730 in the background image 73 according to the processing status of the fluid in blood purification treatment. The blood circuits are an arterial blood circuit 12 and a venous blood circuit 13, which will be described later. The type of fluid is dialysate L ４ The liquid containing the liquid is not a liquid component but a liquid type containing the dialysis liquid L ４ indicates that it contains

[0013] The control unit 8 is further configured to change the height of the liquid surface 73a of the liquid image 730 in the background image 73 according to the fluid processing status, and to control the display input unit 7 so that the liquid surface 73a undulates continuously.

[0014] Furthermore, the control unit 8 controls the blood L flowing in the blood circuit and the dialysis fluid supply / discharge unit 4. ７ and dialysis fluid L ４ The blood purification treatment is controlled by the display input unit 7 so as to stop the shaking of the liquid surface 73a of the liquid image 730 when the blood purification treatment is stopped or interrupted.

[0015] Furthermore, the control unit 8 is configured to cause the display input unit 7 to display a display target image that is to be displayed in blood purification treatment, superimposed on the liquid image 730 .

[0016] As an example, liquid image 730 is an image that resembles water and is colored light blue, but is not limited to this and may be an image that resembles other liquids with different viscosities, colors, etc. Furthermore, the height of liquid surface 73a, i.e., the water level, is the height from the bottom surface 71b of main display area 71, which will be described later, as shown in FIG. 1A. Furthermore, as an example, the images to be displayed are display items 713a to 713c and display items 714a to 714c, which will be described later, as shown in FIG. 1A.

[0017] The blood purification device 1 is driven to circulate blood L extracorporeally through a blood circuit. ７ The dialysis fluid supply / discharge unit 4 further includes a water removal unit 4a that removes water from the dialysis fluid and discharges it to the dialysis fluid supply / discharge unit 4. The fluid treatment status is the water removal treatment status by the water removal unit 4a. The control unit 8 changes the liquid image 730 according to the water removal treatment status by the water removal unit 4a.

[0018] The fluid treatment includes water removal and waste removal in blood purification treatment, gas purging in preparation for treatment, and cleaning and disinfection of the dialysate supply / discharge unit 4 after treatment. The fluid treatment status includes the water removal treatment status in blood purification treatment, the removal treatment status of waste products (urea, etc.) and blood cell / plasma components as predetermined components, the gas purging treatment status, and the cleaning treatment status. Therefore, the fluid refers to the dialysis fluid L flowing in at least one of the blood circuit and the dialysate supply / discharge unit 4 during these treatments. ４ and blood L ７ And so on.

[0019] As shown in FIG. 2A, the blood purification device 1 further includes a power supply unit 2, a dialysate dilution unit 3, and an extracorporeal circulation unit 6.

[0020] (Configuration of Power Supply Unit 2) The power supply unit 2 is configured to supply the power necessary for the blood purification apparatus 1 to operate.

[0021] (Configuration of Dialysis Fluid Dilution Unit 3) As shown in FIG. 2B, the dialysis fluid dilution unit 3 is configured to dilute RO (Reverse Osmosis) water L supplied from the outside. １ and the A concentrate L supplied from the A concentrate tank 30 ２ and the B concentrate L supplied from the B concentrate tank 31 ３ and the concentration of the drug solution is adjusted using ４ The present invention is generally configured to create a

[0022] The dialysis fluid dilution unit 3 dilutes the generated dialysis fluid L ４ a concentration meter 32 for measuring the concentration of the dialysis fluid L ４ and a thermometer 33 for measuring the temperature of the concentration meter 32. The concentration meter 32 is configured using, for example, a conductivity cell. The thermometer 33 is configured using, for example, a thermistor or a platinum resistance thermometer.

[0023] As shown in FIG. 2A, the dialysis fluid dilution unit 3 stores first management information S , which includes information on the measured concentration and temperature. １ and outputs the first management information S １ is output at a predetermined cycle, for example, but is not limited to this.

[0024] 2B , the dialysis fluid supply / discharge unit 4 includes a duplex pump 40, a pressure gauge 41, a flow meter 42, a pressure gauge 43, a water removal pump 44, a flow meter 45, and a pressure pump 48. The water removal unit 4 a in this embodiment is, for example, configured with the water removal pump 44.

[0025] As shown in FIG. 2B, the duplex pump 40 is disposed across the dialysate inlet line 10 and the dialysate outlet line 11. The duplex pump 40 pumps the dialysate L ４ The dialysate discharge line 11 is pressurized to deliver the dialysate discharged liquid L ６ The dual pump 40 is configured to apply pressure to the dialysate inlet line 10 and the dialysate outlet line 11 to deliver the dialysate L at the same pressure to the drain tank 46. ４ and dialysis effluent L ６ is sent.

[0026] The pressure gauges 41 and 43 are, for example, semiconductor pressure sensors using diaphragms. ４ The pressure gauge 41 is disposed on the dialysate introduction line 10 closer to the dialyzer 5 than the duplex pump 40.

[0027] The pressure gauge 43 measures the dialysis wastewater L ６ This pressure gauge 43 is disposed closer to the dialyzer 5 than the duplex pump 40.

[0028] The flowmeter 42 and the flowmeter 45 are flow rate sensors that use, for example, ultrasonic waves or laser light. ４ The flow meter 42 is disposed between the pressure meter 41 and the dialyzer 5 in the dialysate introduction line 10. The flow meter 42 may be disposed in place of the pressure meter 41.

[0029] The flow meter 45 measures the dialysis wastewater L ６ The flow meter 45 is disposed after the water removal pump 44 in the dialysis fluid discharge line 11.

[0030] The ultrafiltration pump 44 is connected to bypass the duplex pump 40. The ultrafiltration pump 44 is connected to the dialyzer 5 to remove blood L of the patient 9. ７ Water L ５ It is provided to remove

[0031] The pressure pump 48 pumps the dialysate L from the dialysate discharge line 11. ４ This pressurizing pump 48 is a cascade pump (non-positive displacement pump) that pumps the liquid to assist the liquid pumping of the duplex pump 40. The pressurizing pump 48 is disposed between the pressure gauge 43 and the water removal pump 44.

[0032] The dialysis fluid supply / discharge unit 4 measures the dialysis fluid L measured by the pressure gauge 41 and the pressure gauge 43. ４ and dialysis effluent L ６ The pressure of the dialysate L measured by the flowmeter 42 and the flowmeter 45 ４ and dialysis effluent L ６ Second management information S including information on the flow rate ２ and outputs the second management information S ２ is output at a predetermined cycle, for example, but is not limited to this.

[0033] (Configuration of Dialyzer 5) The dialyzer 5 has a blood inlet 50, a blood outlet 51, a dialysate inlet 52, and a dialysate outlet 53. As shown in Fig. 2B, the dialysate inlet 52 of the dialysate 5 is connected to the dialysate introduction line 10, and the dialysate outlet 53 is connected to the dialysate discharge line 11. The blood inlet 50 of the dialyzer 5 is connected to the arterial blood circuit 12, and the blood outlet 51 is connected to the venous blood circuit 13.

[0034] The dialyzer 5 has a plurality of hollow fibers, and the hollow fibers are used to circulate blood L ７ The dialyzer 5 is configured to purify blood. The dialyzer 5 is formed with a blood flow path connecting a blood inlet 50 and a blood outlet 51 via a blood purification membrane, and a dialysate flow path connecting a dialysate inlet 52 and a dialysate outlet 53. The hollow fibers constituting the blood purification membrane are formed with minute holes penetrating the outer and inner surfaces to form hollow fiber membranes, and impurities in the blood are absorbed into the dialysate L through the hollow fiber membranes. ４ It penetrates inward.

[0035] During this purification, blood L ７ The excess water in the dialysate L is removed by reducing the pressure on the dialysate inlet line 10 and the dialysate outlet line 11 side by the water removal pump 44 of the water removal unit 4a to be lower than the pressure on the arterial blood circuit 12 and the venous blood circuit 13. ４ Therefore, the amount of water removed is equal to the amount of water L drawn by the water removal pump 44. ５ Therefore, the amount of water removal can be measured by operating the water removal pump 44 so as to equalize the pressure in the dialysate inlet line 10 and the dialysate outlet line 11. The water removal speed is expressed by the control signal S ６ Therefore, to increase the water removal speed, the operation should be made faster, and to decrease the water removal speed, the operation should be made slower.

[0036] (Configuration of Extracorporeal Circulation Unit 6) As shown in FIG. 2B, the extracorporeal circulation unit 6 includes a blood pump 60, a syringe pump 61, a flow meter 62, and a flow meter 63.

[0037] The blood pump 60 is, for example, a peristaltic pump. ７ to the dialyzer 5.

[0038] The syringe pump 61 is, for example, a syringe-type pump. The syringe pump 61 is disposed between the blood pump 60 and the flow meter 62. The syringe pump 61 pumps blood L ７ The blood circuit 12 is configured to introduce an anticoagulant that inhibits coagulation of the blood.

[0039] The flowmeter 62 and the flowmeter 63 are flow rate sensors that use, for example, ultrasound or laser light. ７ The flow meter 62 is disposed between the syringe pump 61 and the dialyzer 5. The flow meter 63 is disposed in the venous blood circuit 13 and measures the flow rate of the purified blood L flowing through the venous blood circuit 13. ８ Measure the flow rate.

[0040] The extracorporeal circulation section 6 measures the blood L ７ and purified blood L ８ and the IP speed of the syringe pump 61, which is the speed at which the anticoagulant is introduced. ３ and outputs the third management information S ３ is output at a predetermined cycle, for example, but is not limited to this.

[0041] (Configuration of Display Input Unit 7) The display input unit 7 is configured as, for example, a touch panel that displays an image and receives touch input. The display input unit 7 receives display control information S ４ The display input unit 7 also displays an image on the display screen 70 based on the operation performed. ５ and outputs it to the control unit 8.

[0042] 1A, the display screen 70 has a main display area 71 and a sub-display area 72. As shown in FIG. 1B, the main display area 71 has, but is not limited to, an upper area 710, a central area 711, a lower area 712, a left area 713, and a right area 714.

[0043] In this embodiment, the upper area 710 may be configured to display other images but not other images in order to ensure the visibility of the background image 73 .

[0044] As an example, the central area 711 displays a central image 711a as a text image indicating the remaining time for dialysis. In the present embodiment, the central area 711 displays, but is not limited to, central images 711a indicating "remaining time for dialysis," "4:00," "start," "end," "12:00," and "16:00." Note that when treatment is completed, the central area 711 displays, as an example, a central image 711a indicating "completed" or "ended."

[0045] By way of example, but not limitation, operation images 712a, 712b, and 712c are displayed in the lower area 712. These operation images 712a to 712c are displayed including text images related to starting, stopping, etc. of blood purification treatment. Examples of the text images displayed in these operation images 712a to 712c include "operation," "stop," "bypass," "preparation," "gas purge," "blood return," "extraction," "washing," "water flushing," "disinfection," and "acid wash."

[0046] "Operating" indicates that the blood purification device 1 is in operation in the selected treatment mode. "Stopped" indicates that the blood purification device 1 is in a stopped state in the selected treatment mode, and is ready to transition to each process and treatment mode. "Bypass" indicates that the dialysate L ４ "Ready" indicates that the blood purification device 1 is in a ready state in the selected treatment mode. "Gas Purge" indicates that a function for removing air from the dialysate inlet line 10 and the dialysate outlet line 11 is in operation. "Blood Return" indicates that blood return processing is possible in all treatment modes. "Extraction" indicates that the dialysate L filled in the dialyzer 5 is in a ready state. ４ "Washing" indicates that the blood purification device 1 is in a state of being washed with water, disinfected, pickled, or the like, or is transitioning to this process. "Washing" indicates that the dialysate inlet line 10 and the dialysate outlet line 11 are being washed and replaced with purified water. "Disinfection" indicates that the dialysate inlet line 10 and the dialysate outlet line 11 are being washed and replaced with hypochlorous acid or a chemical solution used for the same purpose. "Pickling" indicates that the dialysate inlet line 10 and the dialysate outlet line 11 are being washed and replaced with acetic acid or a chemical solution used for the same purpose, which is used to prevent salt precipitation and deposition in the dialysate inlet line 10 and the dialysate outlet line 11.

[0047] Display items 713a, 713b, and 713c are displayed in the left-hand region 713, as an example. Display items 714a, 714b, and 714c are displayed in the right-hand region 714, as an example. Display items 713a to 713c and display items 714a to 714c are items that are preferably displayed on the display screen 70 during blood purification treatment, and numerical values ​​are displayed within the images. In FIG. 1A, these numerical values ​​are represented by shapes such as "○" and "×."

[0048] Examples of items that are preferably displayed during this blood purification treatment include blood flow rate, dialysis fluid temperature, target water removal volume, current water removal volume, water removal rate, dialysis fluid pressure or TMP (Trans Membrane Pressure), arterial pressure, venous pressure, syringe pump injection rate, dialysis fluid concentration, and treatment mode.

[0049] In this embodiment, as an example, arterial pressure, venous pressure, dialysate pressure, dialysate concentration, IP rate (syringe pump infusion rate), and blood flow rate are displayed as display items 713a to 713c and display items 714a to 714c, as shown in Fig. 1A. The display of the treatment mode, water removal rate, current water removal volume, and target water removal volume will be described later.

[0050] The number of display items 713a to 713c and display items 714a to 714c to be displayed can be selected, and the display positions of the display items can be set.

[0051] The sub-display area 72 is a display area on the top surface 71a and right side surface 71d of the main display area 71. As shown in Fig. 1A, a mode image 720 indicating a treatment mode is displayed on the top surface 71a of the sub-display area 72. Examples of the treatment mode include HD mode, HF mode, HDF mode, and ECUM mode.

[0052] The HD mode is a mode in which blood purification therapy is performed using hemodialysis. The mode image 720 shown in FIG. 1A indicates that the HD mode has been selected and is in operation. The HF mode is a mode in which blood purification therapy is performed using hemofiltration. The HDF mode is a mode in which blood purification therapy is performed using hemodiafiltration. The ECUM mode is a mode in which blood purification therapy is performed using extracorporeal circulation filtration.

[0053] (Configuration of the control unit 8) The control unit 8 is a microcomputer including a CPU (Central Processing Unit) that performs calculations and processing on acquired data in accordance with stored programs, and semiconductor memories such as a RAM (Random Access Memory) and a ROM (Read Only Memory), etc. The control unit 8 is configured to comprehensively control the dialysis fluid dilution unit 3 and the like.

[0054] The control unit 8 receives the first management information S １ , the second management information S acquired from the dialysis fluid supply / discharge unit 4 ２ , the third management information S acquired from the extracorporeal circulation unit 6 ３ The background image 73 is changed based on the processing status of the water removal process by the water removal unit 4a, and the values ​​displayed in the display items 713a to 713c and the display items 714a to 714c are updated.

[0055] In this embodiment, the background image 73 changes depending on the processing status of the water removal process, i.e., the degree of water removal. This water removal process preferably includes display items for the target water removal volume, the current water removal volume, and the water removal speed, which are displayed on the display input unit 7. The background image 73 represents the target water removal volume, the current water removal volume, and the water removal speed not as numerical values ​​but as the water level and movement of the liquid surface 73a in the liquid image 730. The control unit 8 changes the liquid surface 73a of the liquid image 730 depending on the water removal processing status by the water removal unit 4a, i.e., in conjunction with the speed of the water removal pump 44 of the water removal unit 4a. More specifically, the control unit 8 changes the swaying of the liquid surface 73a of the liquid image 730 in conjunction with the speed of the water removal pump 44. The background image 73 will be described below.

[0056] (Regarding background image 73) Fig. 3A is a diagram for explaining an example of the gradual display of the background image according to the embodiment, Fig. 3B is a diagram showing an example of the background image when the water removal treatment is stopped, Figs. 4A to 4D are diagrams showing an example of the transition of the background image from the start to the end of the blood purification treatment according to the embodiment.

[0057] As shown in FIG. 1B , the background image 73 is configured to include a liquid image 730 and a space image 731. As an example, the liquid image 730 includes a first wave image 730a, a second wave image 730b, and a third wave image 730c, but is not limited to this and may include more or fewer images as long as it can express waves. The space image 731 is the background image 73 excluding the liquid image 730. The boundary between the liquid image 730 and the space image 731 is the liquid surface 73a. This liquid surface 73a is the outline of a wave and is reminiscent of the surface of water.

[0058] 1B, the liquid image 730 is configured such that the first wave image 730a is in the foreground, followed by the second wave image 730b and the third wave image 730c, which are positioned further back in this order, so that the waves appear three-dimensional. The liquid image 730 becomes lighter in color in the order of the first wave image 730a, the second wave image 730b, and the third wave image 730c. In the liquid image 730 shown in FIG. 1A and other figures, the color intensity is indicated by the narrower the spacing between the hatches, with the narrower the spacing, the darker the color.

[0059] As shown in Figure 3B, the control unit 8 is configured to stop the swaying of the liquid surface 73a of the liquid image 730 when blood purification treatment is stopped or interrupted. This liquid surface 73a indicates the progress of the blood purification treatment at the time of the treatment being stopped. In addition, the image "Stop HD" is displayed in the mode image 720.

[0060] The color of the space image 731 is, for example, white, but is not limited to this as long as the difference from the liquid image 730 is visible.

[0061] When fluid processing has display items for the target amount, current amount, and processing speed, the target amount is shown by the area of ​​the main display area 71. The current amount is shown by the area of ​​the spatial image 731 relative to the main display area 71. The processing speed is shown by the speed at which the liquid image 730 sways.

[0062] When the fluid treatment is a water removal treatment, the water removal treatment has display items for the target water removal volume, the current water removal volume, and the water removal speed, as described above. The target water removal volume is the patient's weight before dialysis minus the set dry weight. The current water removal volume is the cumulative value of the water removal volume from the start of treatment to the present time. The water removal speed indicates the set water removal speed per hour.

[0063] The target amount of water removal, as a target amount, is indicated by the area of ​​the main display area 71. The current amount of water removal, as a current amount, is indicated by the area of ​​the space image 731 relative to the main display area 71. In other words, the liquid image 730 indicates the remaining amount of water removal. The water removal speed, as a processing speed, is indicated by the speed at which the liquid image 730 sways.

[0064] As an example, as shown in FIG. 3A, the control unit 8 is configured to divide the target water removal amount input via the display input unit 7 into 10 levels between 0 and 100%. The target water removal amount is a value input in advance via the display input unit 7. The height (water level) of the liquid surface 73a of the current water removal amount is calculated using the following formula and then rounded off to the nearest 10 level. Water level = 100% - ((target water removal amount - remaining water removal amount) / target water removal amount x 100)

[0065] As shown in Figures 4A and 4B, when the fluid processing status, i.e., the processing status of the water removal process, is 0%, the control unit 8 sets the liquid level 73a to the highest water level, and when the processing status of the water removal process is 100%, the control unit 8 sets the liquid level 73a to the lowest water level.

[0066] The height of the liquid surface 73a changes depending on the current amount of water removed, as shown in Figures 4A to 4D. When the current amount of water removed is 10 to 90% of the target amount of water removed, the liquid surface 73a rises and falls in a wavy manner, centered on the 10 to 90% scale 73b shown in Figure 3A. For example, Figure 3A shows the liquid surface 73a oscillating around the 30% scale 73b.

[0067] As shown in Figs. 3A and 4A, for example, when the current amount of water removed is 0%, the liquid level 73a rises and falls in a wavy manner with the 0% scale 73b as the upper limit.

[0068] Furthermore, as shown in Figs. 3A and 4D, for example, when the current amount of water removed is 100%, the liquid level 73a rises and falls in a wavy manner with the 100% scale 73b as the lower limit.

[0069] The control unit 8 also changes the speed of the sway of the liquid surface 73a of the liquid image 730 depending on the water removal speed. For example, the control unit 8 causes the liquid image 730 to change faster when the water removal speed is fast compared to when it is slow. Note that the water removal speed and the amount of water removed are values ​​that are determined when one is set. Water removal speed (L / h) = amount of water removed (L) / treatment time (h) Water removal amount (mL) = water removal speed (L / h) × treatment time (h)

[0070] 5A to 5C and 5D to 5G are diagrams illustrating an example of changes in the liquid image due to differences in the water removal speed of the blood purification device according to the embodiment. 6A to 6C are diagrams illustrating an example of changes in the liquid image displayed by the blood purification device according to the modified example.

[0071] The liquid image 730 shown in Figures 5A to 5C changes faster than the liquid image 730 shown in Figures 5D to 5G. In other words, the water removal speed is faster in Figures 5A to 5C than in Figures 5D to 5G.

[0072] The liquid image 730 shown in Figures 5A to 5G depicts the main display area 71 as an aquarium surrounded by an upper surface 71a, a lower surface 71b, a left side surface 71c, and a right side surface 71d, and simulates waves colliding with and propagating against the left side surface 71c and the right side surface 71d of the main display area 71.

[0073] On the other hand, FIGS. 6A to 6C do not show reflections on the left side 71c and right side 71d of the main display area 71, but rather simulate an enlarged view of the waves in the center of the aquarium.

[0074] 3A, the water removal speed may be expressed by changing at least one of the wave amplitude A and wavelength B. When the water removal speed is fast, the amplitude A may be made larger, the wavelength B may be made shorter, or both may be used, compared to when the water removal speed is slow.

[0075] 7A and 7B are diagrams showing an example in which a toxin image is superimposed on a liquid image of a blood purification device according to a modified example.

[0076] As a modification, the control unit 8 may display circular toxin images 732, which represent toxins such as urea to be removed, within the liquid image 730, as shown in Figures 7A and 7B. The number and density of these toxin images 732 change depending on the processing status of the blood purification treatment, as shown in Figures 7A and 7B. The number and density of the toxin images 732 decrease as the blood purification treatment progresses.

[0077] As another modification, the control unit 8 may change the color of the liquid image 730 depending on the fluid processing status. For example, the control unit 8 may change the color of the liquid image 730 from yellow to light blue depending on the degree of toxin removal. As a further modification, the control unit 8 may display the state of blood cells in the blood by displaying the amount of dialysis fluid L measured by a blood leakage sensor 43a arranged near the dialysate outlet 53, as shown in FIG. 2B . ４ The color of the liquid image 730 may be changed from light blue to yellow depending on the amount of blood leaking, which is the amount of blood mixed in the liquid. Note that these color changes are just examples, and other colors may also be used.

[0078] As yet another modified example, the control unit 8 may be configured to change the color of the background image 73 when an abnormality occurs to notify the user.

[0079] As yet another modified example, the control unit 8 may be configured to control the height of the liquid surface 73 a of the liquid image 730 , that is, the water level, based on the measured amount of operation of the water removal pump 44 .

[0080] An example of the operation of the water removal process of the blood purification apparatus 1 of this embodiment will be described below with reference to the flowchart of FIG.

[0081] (Operation) The control unit 8 of the blood purification device 1 prepares for the water removal process (Step 1). The control unit 8 receives the first management information S １ , the second management information S acquired from the dialysis fluid supply / discharge unit 4 ２ , the third management information S acquired from the extracorporeal circulation unit 6 ３ and display control information S for displaying a background image 73 on the display input unit 7 based on the processing status of the water removal processing by the water removal unit 4a. ４ The display input unit 7 outputs the display control information S ４ Based on this, a background image 73 in which the current amount of water removal is 0% is displayed.

[0082] When the operation image 712c displayed on the display input unit 7 is operated, the control unit 8 starts the water removal process (Step 2).

[0083] The control unit 8 receives the first management information S １ , second management information S ２ , third management information S ３ The control unit 8 updates the background image 73 based on the processing status of the water removal process by the water removal unit 4a, and updates the values ​​displayed in the display items 713a to 713c and the display items 714a to 714c (Step 3). The control unit 8 updates the background image 73 by updating the water level of the liquid image 730 in accordance with the water removal process, and causes the liquid surface 73a to sway like waves.

[0084] If "Yes" in Step 4 is established, that is, if the water removal process is stopped or interrupted based on an operation performed on the display input unit 7 (Step 4: Yes), the control unit 8 stops the shaking of the liquid surface 73a of the liquid image 730 (Step 5). Note that this stopping or interruption is not limited to an operation by the user, and may be determined by the control unit 8.

[0085] If "Yes" is determined in step 6, that is, if an instruction to resume operation is given based on an operation of the display / input unit 7 (Step 6: Yes), the control unit 8 proceeds to step 3. Note that the control unit 8 may be configured to issue a warning if an instruction to resume operation is not given for a predetermined period of time.

[0086] Here, in step 4, if the dialysis treatment is not stopped or interrupted (Step 4: No) and the water removal treatment is completed (Step 7: Yes), the control unit 8 performs a process to end the water removal treatment and then ends the process.

[0087] Effect of the embodiment Since blood purification treatment is performed over a long period of time while the patient is lying in bed, it is preferable that the treatment status be visible from a distance of about 2 m, which is the length of the bed. The blood purification device 1 of this embodiment displays the water removal treatment status in the background image 73 by displaying the water level change in the liquid image 730 and the pulsation of the liquid surface 73 a, making it easier to see from a distance than when this configuration is not adopted.

[0088] The blood purification device 1 displays the target amount of water removal, the current amount of water removal, and the water removal speed of the water removal process using the area of ​​the main display area 71, the area of ​​the spatial image 731, and the rate of change of the liquid surface 73a, making it easier to see the target amount of water removal, the current amount of water removal, and the water removal speed even from a distance, compared to when they are displayed numerically.

[0089] The blood purification apparatus 1 can display the processing status of the water removal process using the entire background image 73, so the displayed area is larger and easier to see than when the processing status is displayed separately from the background image. Therefore, the blood purification apparatus 1 can configure the display area of ​​the display input unit 7 more compactly.

[0090] When the blood purification device 1 stops or suspends the water removal process, it stops the shaking of the liquid surface 73a of the liquid image 730, making it easier to visually recognize that the process has been suspended or suspended compared to when it stops updating the values ​​of the target water removal volume, current water removal volume, and water removal speed, or displays a text image indicating that the process has been suspended or suspended.

[0091] The above-described blood purification device 1 is configured such that a power supply unit 2, a dialysate dilution unit 3, a dialysate supply / discharge unit 4, a water removal unit 4a, an extracorporeal circulation unit 6, a display / input unit 7, and a control unit 8 are housed in a single housing. Below, as an example, a blood purification device 1 in which at least the dialysate supply / discharge unit 4 and the extracorporeal circulation unit 6 are separate units will be described.

[0092] 9A is an example of a perspective view of an extracorporeal circulation unit of a blood purification device according to another embodiment when it is attached to a dialysate supply / discharge unit, and FIG. 9B is a perspective view of the extracorporeal circulation unit when it is detached from the dialysate supply / discharge unit. In the other embodiments described below, parts having the same functions and configurations as those in the above-described embodiment are designated by the same reference numerals, and their description will be omitted.

[0093] In this blood purification device 1, the extracorporeal circulation unit 6 is configured separately from the dialysate supply / discharge unit 4. The control unit 8 is mounted on the extracorporeal circulation unit 6 and is capable of controlling the dialysate supply / discharge unit 4 and the extracorporeal circulation unit 6.

[0094] The extracorporeal circulation unit 6 has a display / input unit 7 that displays the dialysis status and an operation unit 74 for performing operations related to blood purification therapy. The operation unit 74 may be configured to allow operation inputs different from those of the display / input unit 7, or may be configured to allow at least some of the same operation inputs. The blood purification device 1 may also be configured such that the display / input unit 7 has only a display function, i.e., functions as a monitor, and operation inputs are performed via the operation unit 74. As shown in FIGS. 9A and 9B , the display / input unit 7 is provided so as to protrude from the upper part of the extracorporeal circulation unit 6, but the position and layout of the display / input unit 7 are not limited thereto. The display / input unit 7 may be configured, for example, with a large display screen 70 that covers the entire surface of the extracorporeal circulation unit 6. Although FIGS. 9A and 9B show operation units 74 provided on both sides of the display / input unit 7, the position and layout of the operation units 74 are not limited thereto. By providing the display / input unit 7 and operation unit 74 in the extracorporeal circulation unit 6, which is relatively lightweight and placed close to the patient, the blood purification device 1 makes it easier for the patient to check the treatment status and operate the device, thereby improving convenience.

[0095] The display / input unit 7 and the operation unit 74 may be configured separately from the extracorporeal circulation unit 6, or may be configured to communicate with the control unit 8 of the extracorporeal circulation unit 6 to display and input operations. In this case, for example, the display / input unit 7 and the operation unit 74 may be configured as a dedicated operation terminal or as a mobile terminal such as a smartphone or tablet. The dialysis fluid supply / discharge unit 4 may also be equipped with the display / input unit 7 and the operation unit 74.

[0096] The blood purification device 1 shown in FIGS. 9A and 9B is ４ and dialysis effluent L ６ The piping 47 through which the dialysate L flows is configured to directly connect the dialysate supply / discharge unit 4 and the dialyzer 5 without passing through the extracorporeal circulation unit 6. The piping 47 is configured to directly connect the dialysate L ４ and a supply side pipe 47a for supplying the dialysis waste liquid L from the dialyzer 5. ６ and a discharge side pipe 47b for discharging the dialysis fluid L. ４ and dialysis effluent L ６ The extracorporeal circulation unit 6 does not have a pipe 47 for flowing the dialysis fluid L ４ and dialysis effluent L ６ Even if the piping 47 through which the dialysate flows is fixed, only the dialysate supply / discharge unit 4 needs to be periodically maintained, thereby achieving both reduced running costs and improved maintainability.

[0097] Hereinafter, an example of a piping configuration in which the blood purification device 1 is divided into the extracorporeal circulation unit 6 and the dialysate supply / discharge unit 4 as separate units will be described.

[0098] Figure 10 is an example of a block diagram of a blood purification apparatus in which the extracorporeal circulation unit and the dialysate supply / discharge unit are separate entities. As shown in Figure 10, the blood purification apparatus 1 is configured with the extracorporeal circulation unit 6 and the dialysate supply / discharge unit 4 separate entities. The dialyzer 5 is detachably attached to the extracorporeal circulation unit 6 via a fixing jig 15. The display / input unit 7 is, for example, located on the extracorporeal circulation unit 6 side and controlled by a main control unit 8a (described later), but is not limited to this. The water removal unit 4a is configured with a fluid supply pump 40a and a drainage pump 49 (described later).

[0099] (Configuration of Dialysis Fluid Supply and Discharge Unit 4) The dialysis fluid supply and discharge unit 4 is configured by a sub-controller 8b and a dialyzer 5. ４ a dialysate introduction line 10a for supplying the dialysate L ４ The dialysate discharge line 11a discharges the dialysate, and a bypass flow path 14.

[0100] The dialysate introduction line 10a is connected to the dialysate preparation unit 3a and the dialysate inlet 52 of the dialyzer 5, and introduces the dialysate L purified in the dialysate preparation unit 3a. ４ The dialysate discharge line 11a is connected to the dialysate outlet 53 of the dialyzer 5, and supplies the dialysate L ４ The bypass flow path 14 is connected to the dialysate inlet line 10a and the dialysate outlet line 11a before and after the dialyzer 5, and bypasses (detours around) the dialyzer 5 to connect the dialysate inlet line 10a and the dialysate outlet line 11a.

[0101] That is, the dialysate supply / discharge unit 4 supplies the dialysate L from the dialysate introduction line 10a to the dialysate discharge line 11a via the dialyzer 5. ４ a main fluid supply mode in which the dialysate L is supplied from the dialysate introduction line 10a to the dialysate discharge line 11a via the bypass flow path 14 without passing through the dialyzer 5; ４ and a bypass fluid delivery mode in which the dialysis fluid L is delivered. ４ The liquid is delivered in this manner.

[0102] The dialysis solution preparation unit 3a prepares dialysis solution L from the supplied pure water and a dialysis agent consisting of a concentrated solution or powder. ４ The pure water supplied to the dialysis fluid preparation unit 3a may be supplied from a pure water production unit mounted on the dialysis fluid supply / discharge unit 4, or may be supplied from a pure water production device provided outside the dialysis fluid supply / discharge unit 4. The dialysis fluid preparation unit 3a may also be omitted, and for example, the dialysis fluid L may be supplied to the dialysis fluid supply / discharge unit 4 from an external dialysis fluid supply device or the like. ４ may be configured to supply

[0103] The dialysate introduction line 10a is provided with a supply pump 40a, a flow meter 41a, and a first electromagnetic valve 42a, arranged in this order from the upstream side. ４The flow meter 41a detects the flow rate of the dialysate inlet line 10a. The first solenoid valve 42a is disposed downstream of the connection position where the bypass flow path 14 is connected, and is one of the solenoid valves for switching the flow mode (flow path) between the main flow mode and the bypass flow mode.

[0104] The dialysate discharge line 11a is provided with, from the upstream side, a second solenoid valve 43b, a pressure gauge 44a, a pressure pump 46a, a drainage pump 49, and a flow meter 48a. The pressure pump 46a is an example of a solution pump and an auxiliary pump. The second solenoid valve 43b is disposed upstream of the connection position where the bypass flow path 14 is connected, and is one of the solenoid valves for switching the solution delivery mode (flow path) between the main solution delivery mode and the bypass solution delivery mode. The pressure gauge 44a detects the pressure of the dialysate discharge line 11a. The drainage pump 49 controls the flow rate of the dialysate L in the dialysate discharge line 11a. ４ The pressure pump 46a is a fluid supply pump that supplies the dialysate L ４ The cascade pump 46a pumps the dialysis fluid L from the dialyzer 5 by driving the dialysis fluid discharge pump 49. ４ The flow meter 48a detects the flow rate of the dialysate discharge line 11a.

[0105] The main control unit 8a controls the supply pump 40a and the drain pump 49 of the water removal unit 4a via the sub-control unit 8b to adjust the flow rate of the supply liquid to the dialyzer 5 and the flow rate of the drained liquid, thereby controlling the blood L ７ The blood purification device 1 controls the amount of water removed, and is therefore able to perform dialysis treatment with and without water removal.

[0106] One end of the bypass flow path 14 is connected to the dialysate introduction line 10a between the flow meter 41a and the first electromagnetic valve 42a, and the other end is connected to the pressure meter 44a and the pressure pump 46a. A third electromagnetic valve 45a is also provided in the bypass flow path 14.

[0107] The sub-controller 8b communicates with the main controller 8a of the extracorporeal circulation unit 6 and controls the supply pump 40a, drain pump 49, pressure pump 46a, first solenoid valve 42a, second solenoid valve 43b, and third solenoid valve 45a of the water removal unit 4a in accordance with commands from the main controller 8a. The sub-controller 8b is a microcomputer having a CPU and the like.

[0108] (Configuration of the extracorporeal circulation unit 6) As shown in Fig. 10, the extracorporeal circulation unit 6 has a main control unit 8a, an arterial blood circuit 12a, and a venous blood circuit 13a. The main control unit 8a is a microcomputer equipped with a CPU and the like. The arterial blood circuit 12a receives blood L from the patient 9. ７ The venous blood circuit 13a is provided with a blood pump 60a for sending purified blood L ８ A pressure gauge 61a is provided to detect the pressure.

[0109] (Description of Main Controller and Its Control) The following describes the main controller 8a and the control performed by the main controller 8a. The main controller 8a receives the detection value of the pressure gauge 61a and controls the driving of the blood pump 60a.

[0110] The main control unit 8a also communicates with the sub-controller 8b, receives the detected values ​​of the flowmeter 41a, the flowmeter 48a, and the pressure gauge 44a via the sub-controller 8b, and controls the operation of the pressure pump 46a, the liquid supply pump 40a of the water removal unit 4a, and the drainage pump 49. The main control unit 8a also communicates with the sub-controller 8b, and controls the opening and closing of the first solenoid valve 42a, the second solenoid valve 43b, and the third solenoid valve 45a via the sub-controller 8b.

[0111] The master-slave relationship between the main control unit 8a and the sub-control unit 8b is not limited to the above, and the master-slave relationship may be reversed, or there may be no master-slave relationship.

[0112] The main control unit 8a performs dialysis treatment by driving the blood pump 60a, the fluid supply pump 40a, the pressure pump 46a, and the drainage pump 49 in a state where the fluid supply mode has been switched from the bypass fluid supply mode to the main fluid supply mode by opening and closing the first solenoid valve 42a, the second solenoid valve 43b, and the third solenoid valve 45a. That is, during dialysis treatment, the blood pump 60a is driven to pump blood L through the dialyzer 5. ７ The dialysate L is circulated in the dialyzer 5 by driving the fluid supply pump 40a. ４ While supplying the dialysate L from the dialyzer 5, the pressure pump 46a and the drainage pump 49 are driven. ４ is discharged.

[0113] During this dialysis treatment operation, the supply pump 40a, the pressure pump 46a, and the drain pump 49 are controlled to supply the dialyzer 5 with the dialysis fluid L ４ The flow rate of the dialyzer 5 (dialysis fluid L ４ By adjusting the flow rate of the blood L of the patient 9 ７ In this embodiment, the pressure pump 46a is driven at a set pump speed (rotational speed), the liquid supply pump 40a is driven to achieve a target flow rate by feedback control based on the detection value of the flow meter 41a, and the drainage pump 49 is driven to achieve a target flow rate by feedback control based on the detection value of the flow meter 48a. The pump speeds are an example of command values ​​for the liquid supply pumps.

[0114] Furthermore, during preparation before dialysis treatment and when dialysis treatment is temporarily stopped, the main control unit 8a controls the opening and closing of the first electromagnetic valve 42a, the second electromagnetic valve 43b, and the third electromagnetic valve 45a to switch the fluid supply mode from the main fluid supply mode to the bypass fluid supply mode, and drives the fluid supply pump 40a, the pressure pump 46a, and the drainage pump 49 to supply the dialysis fluid L to the dialysis fluid introduction line 10a and the dialysis fluid discharge line 11a. ４During this dialysate flow operation, the pressure pump 46a is driven at a set pump speed, as in dialysis treatment, the fluid supply pump 40a is driven to achieve a target flow rate by feedback control based on the detection value of the flow meter 41a, and the drainage pump 49 is driven to achieve a target flow rate by feedback control based on the detection value of the flow meter 48a.

[0115] The main control unit 8a changes the liquid surface 73a of the liquid image 730 in accordance with the status of the water removal process by the water removal unit 4a, that is, in conjunction with the speeds of the liquid supply pump 40a and the liquid drainage pump 49 of the water removal unit 4a. More specifically, the main control unit 8a changes the shaking state of the liquid surface 73a of the liquid image 730 in conjunction with the speeds of the liquid supply pump 40a and the liquid drainage pump 49.

[0116] (Summary of the embodiment) Next, the technical ideas grasped from the embodiment described above will be described by using the reference numerals etc. in the embodiment. However, the reference numerals etc. in the following description do not limit the components in the claims to the members etc. specifically shown in the embodiment.

[0117] [1] Blood (L) of the patient (9) is collected through a blood purifier (dialyzer 5). ７ ) is circulated extracorporeally through blood circuits (arterial blood circuit 12 and venous blood circuit 13), and a dialysis fluid (L ４ ) flows, and the blood (L ７a display unit (display input unit 7) that displays a liquid image (730) simulating a liquid as a background image (73); and a control unit (8) that controls the processing of fluid flowing in at least one of the blood circuits (arterial blood circuit 12 and venous blood circuit 13) and the piping unit (dialysis fluid supply / discharge unit 4) and controls the display unit (display input unit 7) to change the height of the liquid surface (73a) of the liquid image (730) in the background image (73) according to the processing status of the fluid in blood purification therapy. This blood purification device makes it easy to visually recognize the processing status of blood purification therapy by the change in the background image. [2] The blood purification device (1) described in [1] above, wherein the control unit (8) further changes the height of the liquid surface (73a) of the liquid image (730) in the background image (73) according to the processing status of the fluid, and controls the display unit (display input unit 7) so that the liquid surface (73a) continuously undulates. In this blood purification device, the liquid level is displayed as if it is rippling continuously according to the fluid treatment status, making it easier to visually recognize the treatment status compared to when the liquid level is not rippling. [3] The control unit (8) sets the liquid level (73a) to the highest level when the fluid treatment status is 0%, and sets the liquid level (73a) to the lowest level when the fluid treatment status is 100%. This blood purification device can display the fluid treatment status using the entire background image, making the display area larger and easier to visually recognize compared to when the treatment status is displayed separately from the background image. [4] The control unit 8 controls the blood (L) flowing in the blood circuits (arterial blood circuit 12 and venous blood circuit 13) and the piping unit (dialysis fluid supply / discharge unit 4). ７ ) and dialysis fluid (L ４The blood purification device (1) described in [3] above controls the execution of blood purification treatment, which involves exchanging components between the blood (L ) and the arterial blood circuit (12) and controls the display unit (display input unit 7) to stop the swaying of the liquid surface (73a) of the liquid image (730) when the blood purification treatment is stopped or interrupted. This blood purification device stops the swaying of the liquid surface of the liquid image when the blood purification treatment is stopped or interrupted, making it easier to visually recognize that the blood purification treatment has been stopped or interrupted compared to when the swaying is not stopped. [5] The blood purification device (1) described in [4] above controls the control unit (8) to change the color of the liquid image (730) depending on the fluid treatment status. This blood purification device changes the color of the liquid image depending on the fluid treatment status, making it easier to visually recognize the fluid treatment status compared to when the color of the liquid image does not change. [6] The blood purification device (1) described in [4] above controls the execution of blood purification treatment, which involves exchanging components between the arterial blood circuit (12) and the venous blood circuit (13) when the blood purification treatment is stopped or interrupted, and controls the display unit (display input unit 7) to stop the swaying of the liquid surface of the liquid image when the blood purification treatment is stopped or interrupted. ７The blood purification device (1) according to any one of [1] to [5] above, further comprising a water removal unit (4a) that removes water from the dialysis fluid and discharges it into a piping unit (dialysis fluid supply / discharge unit 4), the fluid treatment status is the water removal treatment status by the water removal unit (4a), and the control unit (8) changes the liquid image (730) according to the water removal treatment status by the water removal unit (4a). In this blood purification device, since the fluid treatment is water removal treatment, the target water removal amount, the current water removal amount, and the water removal speed are indicated by changes in the liquid image, making them easy to see even from a distance. [7] The blood purification device (1) according to [6] above, wherein the control unit (8) changes the liquid level (73a) of the liquid image (730) in conjunction with the speed of at least one pump (water removal pump 44, or the fluid supply pump 40a and the drainage pump 49) of the water removal unit (4a). In this blood purification device, the liquid level changes in conjunction with the pump speed of the water removal unit, making it easier to visually recognize the speed of the water removal process compared to when this configuration is not adopted. [8] The control unit (8) changes the fluctuation of the liquid level (73a) of the liquid image (730) in conjunction with the speed of at least one pump (water removal pump 44, or the supply pump 40a and the drainage pump 49) of the water removal unit (4a). In this blood purification device, the liquid level fluctuates in conjunction with the pump speed of the water removal unit, making it easier to visually recognize the speed of the water removal process compared to when this configuration is not adopted. [9] The control unit (8) controls the fluctuation of the blood (L) flowing in the blood circuits (arterial blood circuit 12 and venous blood circuit 13) and the piping unit (dialysis fluid supply / discharge unit 4). ７ ) and dialysis fluid (L ４ 7, the blood purification device (1) according to the above item [6] controls the execution of blood purification treatment in which components are exchanged between the blood and the fluid, and displays on the display unit (display input unit 7) display target images (display items 713a to 713c and display items 714a to 714c) to be displayed in the blood purification treatment, superimposed on the liquid image (730). This blood purification device displays the display target images superimposed on the background image, thereby improving the visibility of the display target images along with the fluid treatment status, compared to when an image related to the fluid treatment is displayed separately from the display target images.

[0118] Although several embodiments and modifications of the present invention have been described above, these embodiments and modifications are merely examples and do not limit the scope of the invention as claimed. These novel embodiments and modifications may be embodied in various other forms, and various omissions, substitutions, modifications, etc. may be made without departing from the spirit of the present invention. Furthermore, not all combinations of features described in these embodiments and modifications are necessarily essential to solving the problems of the invention. Furthermore, these embodiments and modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims.

[0119] 1...blood purification device, 2...power supply unit, 3...dialysis fluid dilution unit, 4...dialysis fluid supply / discharge unit, 4a...water removal unit, 5...dialyzer, 6...extracorporeal circulation unit, 7...display input unit, 8...control unit, 32...concentration meter, 33...thermometer, 40...duplex pump, 40a...fluid supply pump, 41...pressure gauge, 42...pressure gauge, 43...pressure gauge, 44...fluid removal pump, 45...flow meter, 49...fluid drainage pump, 60...blood pump, 61...syringe pump, 62...flow meter, 63...flow meter, 70...display screen, 71...main display area, 72...sub-display area, 73...background image, 73a...liquid level, 720...mode image, 730...liquid image, 730a-730c...first wave image to third wave image, 731...space image, 732...toxin image

Claims

1. a blood circuit in which the patient's blood is circulated extracorporeally via a blood purifier; A piping section through which a liquid including a dialysis fluid flows and through which a predetermined component removed from the blood circulated extracorporeally in the blood circuit is discharged; a display unit that displays a liquid image simulating a liquid as a background image; a control unit that controls a treatment of a fluid flowing in at least one of the blood circuit and the piping unit, and controls the display unit to change a liquid level of the liquid image in the background image according to a treatment status of the fluid; A blood purification device equipped with

2. The control unit further controls the display unit to change the height of the liquid surface of the liquid image in accordance with a processing status of the fluid and to make the liquid surface undulate continuously. The blood purification device according to claim 1 .

3. The control unit sets the liquid level to a maximum level when the treatment status of the fluid is 0%, and sets the liquid level to a minimum level when the treatment status of the fluid is 100%. The blood purification apparatus according to claim 2 .

4. the control unit controls execution of a blood purification treatment in which components are exchanged between the blood flowing in the blood circuit and the piping unit and the dialysis fluid, and controls the display unit to stop the shaking of the liquid surface of the liquid image when the blood purification treatment is stopped or interrupted. The blood purification apparatus according to claim 3.

5. The control unit changes a color of the liquid image depending on a processing status of the fluid. The blood purification apparatus according to claim 4.

6. A water removing unit is further provided which, when driven, removes water from the blood circulated extracorporeally through the blood circuit and discharges the water from the blood circuit to the piping unit. The fluid treatment status is a water removal treatment status by the water removal unit, The control unit changes the liquid image according to a state of the water removal process by the water removal unit. The blood purification apparatus according to any one of claims 1 to 5.

7. The control unit changes the liquid level of the liquid image in conjunction with a speed of at least one pump of the water removal unit. The blood purification apparatus according to claim 6.

8. The control unit changes the shaking state of the liquid surface of the liquid image in conjunction with a speed of at least one pump of the water removal unit. The blood purification apparatus according to claim 7.

9. The control unit stops the shaking of the liquid surface of the liquid when the water removal process by the water removal unit is stopped or interrupted. The blood purification apparatus according to claim 8.

10. the control unit controls execution of blood purification treatment in which components are exchanged between the blood flowing in the blood circuit and the piping unit and the dialysis fluid, and causes the display unit to display an image to be displayed in the blood purification treatment by superimposing it on the liquid image. The blood purification apparatus according to claim 6.