Purifying device, information processing method, and program

Abstract

To provide a purifying device that allows a change history of various parameters including a pressure value to be grasped while maintaining convenience of a display by a bar, etc., and to provide a control method and a program of the purifying device.SOLUTION: A purifying device having a flow channel for purifying body fluid taken out from a human body with a purifier and returning it to the human body includes a display control part for causing a display part to display a bar indicating a predetermined pressure range, and display a first mark indicating a present pressure value at an optional position of the flow channel and a second mark indicating a past pressure value at positions to which the pressure values in the bar correspond.SELECTED DRAWING: Figure 1A

Description

[Technical field]

[0001] The present invention relates to a purification device, an information processing method, and a program. [Background technology]

[0002] Conventionally, blood purification treatments have been performed in which blood is taken from a patient's body, disease-causing substances and specific white blood cells are removed from the blood, and the blood is then returned to the body. In such blood purification treatments, a blood purification device is used that has a blood circuit for circulating the blood taken from the body outside the body and returning it to the body, a blood pump that is provided on the blood circuit and delivers the blood, and a pressure measuring means for measuring a predetermined pressure in the blood circuit.

[0003] To ensure that blood purification therapy is performed safely, the pressure in the blood circuit is constantly monitored. If the monitored measured pressure is within a range between the upper and lower pressure alarm limits (normal range) that are set in advance, it is judged to be in a normal state. If it exceeds this normal range, it is judged to be in an abnormal state, an alarm is issued, and therapy is suspended until the cause is removed.

[0004] By the way, since the pressure in the blood circuit varies depending on the individual differences of the patient, the operating conditions of the blood purification device, the surrounding environment, etc., it is desirable that the pressure alarm value can also be freely set by the user according to the situation. In addition, it is desirable that the relationship between the monitored measured pressure and the pressure alarm value be visualized by a graph or the like and displayed on the display of the device.

[0005] Conventional displays include a setting means for setting a pressure warning value, a bar that displays the relationship between the measured pressure value and the pressure warning value, etc. For example, Patent Document 1 discloses a bar that has a certain length in the pressure value scale direction, with an upper limit value at one end of the bar fixed in advance to the maximum value (e.g., 400 mmHg) that can be set on the display, and a lower limit value at the other end of the bar fixed in advance to the minimum value (e.g., -400 mmHg) that can be set on the display. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2012-147989 A Summary of the Invention [Problem to be solved by the invention]

[0007] In the medical field, it is preferable to be able to grasp not only whether various parameters are abnormal, but also whether the various parameters, such as pressure values, are stable or changing toward an abnormal value, and if they are changing toward an abnormal value, whether the change is steep or not. This makes it possible to take measures before the various parameters reach abnormal values.

[0008] The above-mentioned bar display shows pressure values ​​and other parameters measured in real time, making it easy to see at a glance the current value and whether it is an abnormal value or a normal value, but it does not allow one to see the change history of various parameters such as pressure values.

[0009] It is also possible to switch the bar display screen to one that displays a graph showing the change history of various parameters such as pressure values. However, in busy medical settings, it is desirable to be able to grasp the change history of various parameters such as pressure values ​​while viewing the highly visible bar display showing normal / abnormal conditions, without having to switch screens.

[0010] The present invention has been made in consideration of the above points, and aims to provide a purification device, a control method for a purification device, and a program that make it possible to grasp the change history of various parameters such as pressure values ​​while taking advantage of the convenience of display using bars or the like. [Means for solving the problem]

[0011] That is, the present invention is as follows. [1] A purification device having a flow path for purifying body fluid taken from a human body with a purifier and returning the body fluid to the human body, a display control unit that causes a display unit to display a bar indicating a predetermined pressure range, and causes a first mark indicating a current pressure value at an arbitrary position of the flow path and a second mark indicating a past pressure value at positions on the bar corresponding to the pressure values; Purification equipment. [2] The display control unit causes the display unit to display a plurality of the second marks at different past points in time. The purification device described in [1]. [3] The display control unit causes the first mark and the second mark to be displayed on the display unit in different forms. The purification device according to [1] or [2]. [4] The display control unit controls the display of the first mark and the second mark so as to differ depending on the passage of time. The purification device according to any one of [1] to [3]. [5] The display control unit controls the display of the second marks so as to vary them over time. The purification device according to any one of [1] to [4]. [6] The display control unit controls the display of the first mark in front of the second mark. The purification device according to any one of [1] to [5]. [7] The display control unit updates the display of the first mark and the second mark at a time interval corresponding to a treatment time. The purification device according to any one of [1] to [6]. [8] The display control unit controls the display so that the time interval between updating the display of the first mark and the second mark becomes longer as the treatment time becomes longer. The purification device according to [7]. [9] the display control unit updates display of the first mark and the second mark at a time interval corresponding to the pressure value indicated by the first mark. The purification device according to any one of [1] to [8].

[10] the display control unit controls the display so that the time interval when the pressure value indicated by the first mark is in an abnormal range is shorter than the time interval when the pressure value indicated by the first mark is in a normal range. The purification device according to [9].

[11] the display control unit updates the display of the first mark and the second mark at a time interval corresponding to a change in the pressure value of the first mark. The purification device according to any one of [1] to

[10] .

[12] the display control unit controls the display such that the time interval becomes shorter as the fluctuation in the pressure value of the first mark becomes larger. The purification device according to

[11] .

[13] When the pressure value of the first mark fluctuates to a specified value or more, the display control unit controls the display of the first mark after the fluctuating value to be different from the first mark before the fluctuating value. The purification device according to any one of [1] to

[12] .

[14] the display control unit does not display the second mark on the display unit when a difference between the current pressure value and the past pressure value is equal to or smaller than a certain value. The purification device according to any one of [1] to

[13] .

[15] The processor: Obtaining information about a pressure at an arbitrary position in a flow path for purifying the body fluid taken from the human body using a purifier and returning the body fluid to the human body; and displaying, on a display unit, a bar indicating a predetermined pressure range, and displaying, at positions on the bar corresponding to the pressure values, a first mark indicating a current pressure value at an arbitrary position in the flow path and a second mark indicating a past pressure value. Information processing methods.

[16] The processor: Obtaining information about a pressure at an arbitrary position in a flow path for purifying the body fluid taken from the human body using a purifier and returning the body fluid to the human body; and causing a display unit to display a bar indicating a predetermined pressure range, and a first mark indicating a current pressure value at an arbitrary position in the flow path and a second mark indicating a past pressure value at positions on the bar corresponding to the pressure values. program. Effect of the Invention

[0012] According to the present invention, it is possible to provide a purification device, a control method and a program for the purification device, which make it possible to grasp the change history of various parameters such as pressure values ​​while taking advantage of the convenience of display using bars or the like. [Brief description of the drawings]

[0013] [Figure 1A] FIG. 1 is an explanatory diagram showing an outline of the configuration of a blood purification apparatus. [Figure 1B] FIG. 2 is a diagram illustrating an example of a hardware configuration of the information processing apparatus according to the present embodiment. [Figure 1C] FIG. 2 is a diagram illustrating an example of a functional block configuration of the information processing apparatus according to the present embodiment. [Figure 2A] FIG. 2 is an explanatory diagram showing an example of a display screen. [Figure 2B] FIG. 11 is an explanatory diagram showing an example of a setting screen. [Diagram 3] 4 is a flowchart illustrating an example of an information processing method according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the present invention (hereinafter referred to as "the present embodiment") will be described in detail with reference to the drawings as necessary, but the present invention is not limited to this, and various modifications are possible without departing from the gist of the present invention. In the drawings, the same elements are given the same reference numerals, and duplicated explanations will be omitted. Furthermore, positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings, unless otherwise specified. Furthermore, the dimensional ratios of the drawings are not limited to those shown in the drawings.

[0015] 1. Purification equipment 1A shows a schematic diagram of the purification device of this embodiment. The purification device 100 of this embodiment comprises a purifier 120 for removing bodily fluid from a patient 500, a flow path 110 for returning the bodily fluid purified by the purifier 120 to the patient 500, and a display unit 130. The display unit 130 is a display that displays information necessary for controlling the operation of the purification device 100, and at least displays the pressure value at an arbitrary position in the flow path 110.

[0016] The purification device 100 may be, for example, a device that performs blood filtration or dialysis, etc., capable of performing continuous hemodialysis (CHD), continuous hemofiltration (CHF), continuous hemodiafiltration (CHDF), apheresis, a device that performs concentrated ascites filtration and reinfusion therapy (CART), which is a treatment for ascites, or a device that can perform any other treatment method using a purification device. In the following, a device that performs blood filtration or dialysis, etc. will be described as an example, but this embodiment is not limited to the treatment use or type as long as it displays and controls the pressure values ​​of various points such as the flow path.

[0017] The flow path 110 may have an upstream circuit 113 and a downstream circuit 114, and may have any other circuit configuration as necessary.

[0018] The upstream circuit 113 is a flow path connecting the fluid passage 120a of the purifier 120 and the blood collection unit 111 connected to the patient 500, and supplies untreated bodily fluid (blood) to the first space 121 of the purifier 120. Specifically, the upstream circuit 113 sends blood drawn from the blood collection unit 111 connected to the patient 500 by the blood sending pump 115 to the fluid passage 120a.

[0019] The downstream circuit 114 is a flow path connecting the fluid passage 120b of the purifier 120 and the blood return section 112 connected to the patient 500, and the downstream circuit 114 discharges the treated body fluid (blood) from the first space 121 of the purifier 120. The discharged blood is returned to the patient 500 through the downstream circuit 114.

[0020] The flow path 110 may have a pressure sensor 116 at any location. For example, in Fig. 1, a pressure sensor 116a that measures the arterial pressure immediately after the blood collection section 111, a pressure sensor 116b that measures the inlet pressure immediately before the fluid passage port 120a of the purifier 120, a pressure sensor 116c that measures the outlet pressure immediately after the fluid passage port 120b of the purifier 120, and a pressure sensor 116d that measures the venous pressure immediately before the blood return section 112 are provided. The pressure sensors are not particularly limited and can be provided at any location.

[0021] The pressure sensor 116 may be connected to the control unit 140, which will be described later, by wire (not shown) or wirelessly, and may continuously or intermittently output the measured pressure value to the control unit 140. Furthermore, the pressure value at an arbitrary position of the flow channel 110 displayed by the display unit 130 may be a pressure value measured by these pressure sensors 116, or may be a value calculated from a plurality of pressure values ​​measured by these pressure sensors 116.

[0022] The calculated pressure value is not particularly limited, but may be, for example, transmembrane pressure (TMP). TMP represents the pressure difference between the inside and outside of the membrane, and is calculated by the following formula. For example, when membrane coagulation or overfiltration occurs, TMP increases, and conversely, when a leak or the like occurs, TMP decreases. Hereinafter, no distinction is made between the pressure value at any position in the flow channel 110 and the pressure value calculated as above. TMP = (inlet pressure + outlet pressure) ÷ 2 - filtration pressure

[0023] The purifier 120 includes a membrane 123, and a first space 121 and a second space 122 separated by the membrane. The membrane 123 may separate components in a body fluid such as blood supplied to the first space 121 into the second space 122. Alternatively, the membrane 123 may move components in the second space 122 to the first space 121. Typically, the purifier 120 may be a known blood purifier or hemodialysis device (dialyzer) having a hollow fiber membrane. The membrane 123 may be composed of, for example, a number of hollow fiber membranes, and may allow components in blood to pass through by a diffusion phenomenon or a filtration phenomenon.

[0024] A first space 121 of the membrane 123 (an internal space of the hollow fiber membrane) communicates with the liquid passage ports 120a and 120b, and a second space 122 of the membrane 123 (an external space of the hollow fiber membrane) communicates with the liquid passage ports 120c and 120d. The purifier 120 may have, for example, a cylindrical housing and may have the liquid passage ports 120a and 120b at both ends in the longitudinal direction (vertical direction) and two liquid passage ports 120c and 120d on the side surfaces.

[0025] One embodiment of the liquid passage ports 120a to 120d will be illustrated below, but the embodiment of the liquid passage ports 120a to 120d is not limited to the following.

[0026] The fluid passage 120a may be an inlet through which the upstream circuit 113 is connected and through which untreated body fluid collected from a patient flows into the first space 121. The fluid passage 120b is an outlet through which blood after filtration or dialysis flows out from the first space 121. The fluid passage 120b is connected to the downstream circuit 114. The fluid passage 120c is an inlet through which dialysis fluid supplied from a liquid storage section (not shown) flows into the second space 122. The fluid passage 120d is an outlet through which body fluid that has passed through the membrane 123 is discharged from the second space 122.

[0027] The display unit 130 controls the display of pressure values ​​and information relating to the operation control of various pumps and valves included in the purification device 100. The display unit 130 is not particularly limited, but examples thereof include a display and a touch panel.

[0028] The purification device 100 may have a control unit 140 for controlling the operation of various pumps, valves, etc. included in the purification device 100 and for executing any treatment. The control unit 140 is not particularly limited, and may have, for example, an operation control unit 141 and a display control unit 142. The control unit 140 may be a computer included in the purification device 100, or may be a computer independent of the purification device 100.

[0029] 1B is a diagram showing an example of a hardware configuration of the control unit 140. The control unit 140 has a processor 140a such as a CPU (Central Processing Unit) or a GPU (Graphical Processing Unit), a storage device 140b such as a memory, an HDD (Hard Disk Drive) and / or an SSD (Solid State Drive), a communication IF (Interface) 140c for wired or wireless communication, an input device 140d for accepting an input operation, and an output device 140e for outputting information. The input device 140d is, for example, a keyboard, a touch panel, a mouse and / or a microphone. The output device 140e may be, for example, a speaker, in addition to the display or touch panel that is the display unit 130.

[0030] FIG. 1C is a diagram showing an example of a functional block configuration of the control unit 140. The control unit 140 may include an operation control unit 141 and a display control unit 142. The storage unit 143 can be realized by using a storage device 140b included in the control unit 140. The operation control unit 141 and the display control unit 142 can be realized by the processor 140a of the control unit 140 executing a program stored in the storage device 140b. The program can be stored in a storage medium. The storage medium storing the program may be a non-transitory computer readable storage medium. The non-transitory storage medium is not particularly limited, and may be, for example, a storage medium such as a USB memory or a CD-ROM.

[0031] The storage unit 143 may also record the measured pressure value or a value related to the pressure value. Although not particularly limited, for example, the operation control unit 141 may control various pumps and valves (not shown) according to the operation conditions executed by the user, thereby executing the purification process. The operation control unit 141 may also record values ​​acquired from the pressure sensors 116 at various locations in the storage unit 143.

[0032] The display control unit 142 may control the display of a bar indicating a pressure range controlled to be displayed on the display unit 130 based on the measurement data recorded in the storage unit 143, and may control the display of a first mark O11 indicating a current pressure value at an arbitrary position of the flow channel 110 and a second mark O12 indicating a past pressure value at positions on the bar O10 corresponding to the pressure values. Here, the measurement data includes, for example, the pressures measured by the pressure sensors 116a, 116b, and 116c, and the TMP calculated in the control unit 140.

[0033] 2A is an example of a display screen of this embodiment. As shown in FIG. 2A, the display control unit 142 causes the display unit 130 to display a bar O10 indicating a predetermined pressure range, and also causes a first mark O11 indicating a current pressure value P1 at an arbitrary position of the flow channel 110 and a second mark O12 indicating a past pressure value P2 at positions on the bar O10 corresponding to the pressure values.

[0034] In Fig. 2A, although not limited thereto, for example, the four pressure values ​​of arterial pressure, inlet pressure, venous pressure, and TMP are displayed and controlled so that the four pressure values ​​can be grasped on one display screen. In addition, in this embodiment, a first mark O11 indicating the current pressure value and a second mark O12 indicating the past pressure value are displayed in each bar O10, so that the change between the current and past pressure values ​​can also be displayed and controlled. Note that the number of second marks O12 in each bar O10 is not limited to the example in Fig. 2A, and may be a common number for all the bars O10, or may be different.

[0035] The form of the bar O10 is not particularly limited, but may be, for example, a bar having a certain length in the scale direction of the pressure value, with one end and the other end of the bar corresponding to the upper and lower limit values ​​of the pressure value indicated by the bar. These upper and lower limit values ​​may be arbitrarily adjustable. The form of the first and second marks is not particularly limited, but may be, for example, a slider that indicates pressure and is placed near or over the bar.

[0036] As shown in "Arterial" in FIG. 2A, the bar O10 of each numerical value controlled by the display control unit 142 may have a normal amount region O10a indicating that the pressure value is in the normal range, a caution area O10b indicating that the pressure value is in the caution area, and an abnormal area O10c indicating that the pressure value is in the abnormal range. The display control unit 142 may control the display of the normal amount region O10a, the caution area O10b, and the abnormal area O10c in different colors or the like. In addition, the upper and lower limit values ​​of the normal amount region O10a, the caution area O10b, and the abnormal area O10c may be determined in advance by the purification device 100 or may be set by the user.

[0037] The display control unit 142 may control the display so that the display mode when the first mark O11 or the second mark O12 is located in the normal amount region O10a is different from the display mode when the first mark O11 or the second mark O12 is located in either the caution region O10b or the abnormal region O10c. When the first mark O11 or the second mark O12 is located in the caution region O10b or the abnormal region O10c, the mark may flash, change color, or change size.

[0038] Furthermore, the display control unit 142 may control the display so that the display mode when the first mark O11 or the second mark O12 is located in the caution region O10b differs from the display mode when the first mark O11 or the second mark O12 is located in the abnormal region O10c. For example, when the first mark O11 or the second mark O12 is located in the abnormal region O10c, the mark may be made to blink faster or changed to a darker caution color.

[0039] 2A, the display control unit 142 may control the display of an area O10d that displays the upper limit value of the pressure value of the bar O10 and an area O10e that displays the lower limit value at both ends of the bar O10 of each numerical value. The upper and lower limit values ​​to be displayed in the areas O10d and O10e may be determined in advance by the purification device 100 or may be set by the user.

[0040] The display control unit 142 may control the display of a setting screen for setting the upper and lower limit values ​​of the normal amount region O10a, the caution region O10b, and the abnormal region O10c, and for setting the upper and lower limit values ​​to be displayed in regions O10d and O10e, and the display control unit 142 may control the display of a region O10d that displays the upper limit value and a region O10e that displays the lower limit value of the bar O10 for each numerical value.

[0041] The "Arterial" setting screen is shown in Figure 2B. As shown in Figure 2B, the boundaries of the normal amount region O10a, the caution region O10b, and the abnormal region O10c can be changed by right-clicking and dragging the boundaries to the left or right. Alternatively, the boundaries of the regions can be changed by increasing or decreasing the values ​​by manipulating the arrows displayed in the upper limit setting region O10f and the lower limit setting region O10g.

[0042] In addition, in FIG. 2B, by touching a bar O10 shown in FIG. 2A for which the boundaries of the normal amount region O10a, the caution region O10b, and the abnormal region O10c are to be changed, the normal screen shown in FIG. 2A may be transitioned to a setting screen shown in FIG. 2B.

[0043] As shown in "Inlet" in FIG. 2A, the display control unit 142 may cause the display unit 130 to display a plurality of second marks O121, O122, and O123 at different past times. The number of second marks O12 displayed on the display unit 130 can be changed by a user operation. The time intervals of the plurality of second marks O121, O122, and O123 may be, for example, every 5 minutes or every 10 minutes, or every 1 / 20 or 1 / 10 of the treatment time. Here, the treatment time refers to the time of the entire treatment process, and if the treatment time is 2 hours, "every 1 / 20" means "every 6 minutes."

[0044] As shown in "Arterial" in FIG. 2A, the display control unit 142 may display the first mark O11 and the second mark O12 in different forms on the display unit 130. The "different forms" are not particularly limited, but may refer to, for example, different shapes, colors, sizes, etc. Specifically, the first mark O11 may be displayed as a square and the second mark O12 as a triangle, or the first mark O11 may be displayed in red and the second mark O12 in blue. This allows the current pressure value and the past pressure value to be easily visually recognized.

[0045] 2A, the display control unit 142 may control the display of the first mark O11 and the second mark O12 so that they are different depending on the passage of time. Specifically, the display control unit 142 may control the display so that the color of the second mark O12 is darker or lighter than the first mark O11 depending on the passage of time from the present to the past or from the past to the present, or may control the display so that the size of the second mark O12 is larger or smaller than the first mark O11. This makes it possible to easily visually recognize the current pressure value, the past pressure value, and the change in the pressure value in the past.

[0046] 2A, when displaying a plurality of second marks O12, the display control unit 142 may control the display of the plurality of second marks O12 so that the second marks O12 are changed according to the passage of time. Specifically, the display control unit 142 may control the display of the plurality of second marks O121, O122, O123 so that the colors of the plurality of second marks O121, O122, O123 gradually become darker or lighter according to the passage of time from the present to the past or from the past to the present, and may control the display of the plurality of second marks O12 so that the sizes of the plurality of second marks O12 gradually become larger or smaller.

[0047] As shown in "Venous" in FIG. 2A, the display control unit 142 may control the display of the first mark O11 to be in front of the second mark O12. Specifically, when the first mark O11 and the second mark O12 are displayed in close positions and at least partially overlap each other, the display control unit 142 may control the display of the first mark O11 to be in front of the second mark O12. That is, the display control unit 142 may control the display of the mark indicating the most recent value to be in front. This allows the current pressure value and the past pressure value to be easily visually recognized, for example, when the first mark O11 and the second mark O12 are displayed in close positions. Furthermore, it is possible to make the most recent value easier to visually recognize.

[0048] As shown in "Venous" in Fig. 2A, when displaying a plurality of second marks O12, the display control unit 142 may control the display of the second marks O12 that indicate a newer value of time in the foreground. Specifically, when the second marks O121, 122 are displayed in positions close to each other and at least partially overlap each other, the display control unit 142 may control the display of the second mark O121 that indicates a newer value of the measurement time in the foreground of the second mark O122. This makes it possible to easily visually recognize, for example, the time relationship of past pressure values ​​indicated by the second marks O12.

[0049] The display control unit 142 may control the display of the position of the first mark O11 according to the latest acquired pressure value P1 if the pressure value P1 is continuously acquired, or may control the display of the first mark O11 according to the latest acquired pressure value P1 if the pressure value P1 is intermittently acquired at a certain interval. In the former case, the display control unit 142 may control the display so that the position of the first mark O11 moves continuously according to the change in the pressure value P1, and in the latter case, the display control unit 142 may update the position of the first mark O11 at the time interval at which the pressure value P1 is acquired. As an example, if the pressure value P1 is acquired intermittently every 5 minutes, in the latter case, the position of the first mark O11 may be updated every 5 minutes, and the position may not move for the 5 minutes until the update.

[0050] The same can be said about the second mark O12, and the display control unit 142 may control the display of the second mark O12 according to the acquired pressure value if the pressure value is continuously acquired, or may control the display of the second mark O12 according to the acquired pressure value if the pressure value is intermittently acquired at a certain interval. In the former case, the display control unit 142 may control the display so that the position of the second mark O12 moves continuously according to the change in the pressure value P2, and in the latter case, the display control unit 142 may update the position of the second mark O12 at the time interval at which the pressure value P2 is acquired. As an example, if the pressure value P2 is acquired intermittently every 5 minutes, in the latter case, the position of the second mark O12 may be updated every 5 minutes, and the position may not move for the 5 minutes until the update.

[0051] The time interval until the update may be changed by the user. For example, as shown in Fig. 2B, the time interval can be changed by adjusting the arrow displayed in the area 10h indicating the time interval until the update to increase or decrease the value.

[0052] Moreover, regardless of whether the pressure value P1 is acquired continuously or intermittently, the display of the first mark O11 may be updated at a predetermined time interval. That is, the position of the first mark O11 may be updated every 5 minutes, and the position may not move for 5 minutes until the update. Similarly, the display of the second mark O12 may be updated at a predetermined time interval regardless of whether the pressure value P2 is acquired continuously or intermittently. This time interval may be a time interval according to the treatment time, and may be, for example, every 1 / 20 or 1 / 10 of the treatment time. Here, the treatment time refers to the time of the entire treatment process, and when the treatment time is 2 hours, "every 1 / 20" means "every 6 minutes". That is, the positions of the first mark O11 and / or the second mark O12 may be updated every 6 minutes.

[0053] Furthermore, the display control unit 142 may control the display so that the longer the treatment time, the longer the time interval for updating the display of the first mark O11 and the second mark O12. For example, if the treatment time is two hours, the display of the first mark O11 and the second mark O12 may be updated at time intervals of five minutes, and if the treatment time is three hours, the display of the first mark O11 and the second mark O12 may be updated at time intervals of ten minutes. This makes it possible to update the display of the marks at intervals appropriate for the treatment time, and to avoid updating the display unnecessarily.

[0054] The display control unit 142 may update the display of the first mark O11 and the second mark O12 at a time interval according to the pressure value P1 indicated by the first mark O11. For example, if the pressure value P1 is within the normal range, there is little need to check the value frequently, so the update time interval may be made longer, and the closer the pressure value P1 is to the abnormal range or when it is within the abnormal range, there is a high need to check the value frequently, so the update time interval may be made shorter. This enables appropriate display when it is necessary to check the change in the pressure value P1 in more detail.

[0055] The display control unit 142 may update the display of the first mark O11 and the second mark O12 at a time interval according to the fluctuation of the pressure value P1 of the first mark O11. For example, when the fluctuation of the pressure value P1 is rapid and the change is drastic, it is highly necessary to check the value frequently, so the update time interval may be shorter, and when the fluctuation of the pressure value P1 is slow and the change is small, it is less necessary to check the value frequently, so the update time interval may be longer. The fluctuation of the pressure value P1 may be represented by an increase or decrease in the pressure value P1 per unit time. This enables an appropriate display when it is necessary to check the change in the pressure value P1 in more detail.

[0056] When the pressure value of the first mark O11 changes by a specified value or more, the display control unit 142 may control the display of the first mark O11 after the change to be different from the first mark O11 before the change. This allows the user to easily visually recognize a large change in the current pressure value. The specified value may be determined in advance as, for example, an upper limit value and a lower limit value of the amount of change per time.

[0057] The display control unit 142 may be configured not to display the second mark O12 on the display unit 130 when the difference between the current pressure value P1 and the past pressure value P2 is equal to or less than a certain level. As a result, if the second mark O12 is displayed, the user can visually recognize that there is a considerable difference between the current pressure value P1 and the past pressure value P2, and if the second mark O12 is not displayed, the user can easily visually recognize that there is no difference between the current pressure value P1 and the past pressure value P2 and that stable driving is being performed.

[0058] 2. Information processing method Next, an embodiment of the information processing method of the purification device 100 will be described. The processor executes the steps of: acquiring information about the pressure at any point in a flow path through which bodily fluid removed from the human body is purified by a purifier and returned to the human body.

[0059] Fig. 3 shows a flow chart illustrating an example of the information processing method of this embodiment. As shown in Fig. 3, when blood dialysis is performed by the purification device 100, the operation control unit 141 executes step S1 of acquiring pressure values ​​from pressure sensors at each position and acquiring information about pressure at any position of a flow path for purifying body fluid taken from a human body with a purifier and returning the body to the human body. Then, the display control unit 131 executes step S2 of displaying a bar indicating a predetermined pressure range on the display unit 130, and displaying a first mark indicating a current pressure value at any position of the flow path and a second mark indicating a past pressure value at positions on the bar corresponding to the pressure values.

[0060] Note that since the specific aspects of the method of this embodiment have been described above in the operational processing, detailed description thereof will be omitted here.

[0061] 3. Program The program of this embodiment causes the processor to execute the steps of acquiring information regarding the pressure at any position in a flow path through which bodily fluid removed from a human body is purified in a purifier and returned to the human body, and causing a display unit to display a bar indicating a predetermined pressure range, as well as a first mark indicating the current pressure value at any position in the flow path and a second mark indicating a past pressure value, at positions on the bar corresponding to the pressure values. program.

[0062] The program may be recorded on a readable recording medium. Since the specific aspects of the processing executed by the program of the present embodiment have been described in the above operation processing, detailed description thereof will be omitted here. [Explanation of symbols]

[0063] 100...purification device, 110...flow path, 111...blood collection section, 112...blood return section, 113...upstream circuit, 114...downstream circuit, 115...blood pump, 116...pressure sensor, 116a...pressure sensor, 116b...pressure sensor, 116c...pressure sensor, 116d...pressure sensor, 120...purifier, 120a...fluid passage port, 120b...fluid passage port, 120c...fluid passage port, 120d...fluid passage port, 121...first space, 122...second space, 123...membrane, 130...display section, 131...display control section, 140...control section, 140a...pump processor, 140b...storage device, 140d...input device, 140e...output device, 141...operation control unit, 142...display control unit, 143...memory unit, 500...patient, O10...bar, O10a...normal amount area, O10b...caution area, O10c...abnormal area, O11...first mark, O12...second mark, O121...second mark, O122...second mark, O123...second mark, O10d...area, O10e...area, O10f...upper limit setting area, O10g...lower limit setting area, O10h...area.

Claims

1. A purification device having a flow path for purifying body fluid taken from a human body with a purifier and returning the body fluid to the human body, a display control unit that causes a display unit to display a bar indicating a predetermined pressure range, and causes a first mark indicating a current pressure value at an arbitrary position of the flow path and a second mark indicating a past pressure value at positions on the bar corresponding to the pressure values; Purification equipment.

2. The display control unit causes the display unit to display a plurality of the second marks at different past points in time. The purification device according to claim 1 .

3. the display control unit causes the first mark and the second mark to be displayed on the display unit in different forms. The purification device according to claim 1.

4. The display control unit controls the display of the first mark and the second mark so as to differ depending on the passage of time. The purification device according to claim 1 .

5. The display control unit controls the display of the second marks in a manner that varies with time. The purification device according to claim 1 .

6. The display control unit controls the display of the first mark in front of the second mark. The purification device according to claim 1 .

7. The display control unit updates the display of the first mark and the second mark at a time interval corresponding to a treatment time. The purification device according to claim 1 .

8. The display control unit controls the display so that the time interval between updating the display of the first mark and the second mark becomes longer as the treatment time becomes longer. The purification device according to claim 7.

9. the display control unit updates display of the first mark and the second mark at a time interval corresponding to the pressure value indicated by the first mark. The purification device according to claim 1 .

10. the display control unit controls the display so that the time interval when the pressure value indicated by the first mark is in an abnormal range is shorter than the time interval when the pressure value indicated by the first mark is in a normal range. The purification device according to claim 9.

11. the display control unit updates display of the first mark and the second mark at a time interval corresponding to a change in the pressure value of the first mark. The purification device according to claim 1 .

12. the display control unit controls the display such that the time interval becomes shorter as the fluctuation in the pressure value of the first mark becomes larger. The purification device according to claim 11.

13. When the pressure value of the first mark fluctuates to a specified value or more, the display control unit controls the display of the first mark after the fluctuating value to be different from the first mark before the fluctuating value. The purification device according to claim 1 .

14. the display control unit does not display the second mark on the display unit when a difference between the current pressure value and the past pressure value is equal to or smaller than a certain value. The purification device according to claim 1 .

15. The processor: Obtaining information about a pressure at an arbitrary position in a flow path for purifying the body fluid taken from the human body using a purifier and returning the body fluid to the human body; and displaying, on a display unit, a bar indicating a predetermined pressure range, and displaying, at positions on the bar corresponding to the pressure values, a first mark indicating a current pressure value at an arbitrary position in the flow path and a second mark indicating a past pressure value. Information processing methods.

16. The processor: Obtaining information about a pressure at an arbitrary position in a flow path for purifying the body fluid taken from the human body using a purifier and returning the body fluid to the human body; and causing a display unit to display a bar indicating a predetermined pressure range, and a first mark indicating a current pressure value at an arbitrary position in the flow path and a second mark indicating a past pressure value at positions on the bar corresponding to the pressure values. program.

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