JP2020192288A - Chemical liquid supply device and blood purification system - Google Patents

Abstract

To provide a chemical liquid supply device and a blood purification system, capable of appropriately performing cleaning and disinfection without wastefully consuming chemical liquid.SOLUTION: A chemical liquid supply device 2 comprises: a chemical liquid transmission unit 23 for transmitting chemical liquid to a plurality of blood purification devices in order to execute cleaning/disinfection treatment of performing at least either of cleaning and disinfection on the inside of piping of the plurality of blood purification devices; a communication unit 25 for performing communication with the plurality of blood purification devices; and a detection unit that by the communication unit performing communication with the plurality of blood purification devices, detects completion time at which cleaning/disinfection treatment of the last blood purification device of the plurality of blood purification devices is completed and cleaning/disinfection treatment of the plurality of blood purification devices is completed.SELECTED DRAWING: Figure 2

Description

The present invention relates to a drug solution supply device and a blood purification system.

In the central system for dialysis treatment used for dialysis treatment (hereinafter, also referred to as "blood purification system"), the dialysate is prepared and supplied to each dialysis monitoring device (hereinafter, also referred to as "dialysis device"). A feeder is used. Further, the dialysate supply device prepares a chemical solution for each of the dialysate to clean and disinfect the device and supplies the dialysate to each dialysate (see, for example, Patent Documents 1 and 2).

Japanese Patent No. 5483741 Japanese Patent No. 5341137

The user sets the process time of the washing process, and the chemical feed is controlled according to the set process time. If the process time is set longer than the actual completion time, the chemical solution will be consumed more than necessary. On the contrary, if the process time is set shorter than the actual completion time, the cleaning and disinfection becomes insufficient.

Therefore, an object of the present invention is to provide a chemical solution supply device and a blood purification system capable of appropriately performing cleaning and disinfection without wastefully consuming the chemical solution.

The chemical solution supply device according to one embodiment of the present invention performs a cleaning and disinfecting treatment for performing at least one of cleaning and disinfection in the pipes of the plurality of blood purification devices, so that the chemical solution is applied to the plurality of blood purification devices. The last blood of the plurality of blood purification devices by communicating with the drug solution feeding unit, the communication unit communicating with the plurality of blood purification devices, and the communication unit communicating with the plurality of blood purification devices. A detection unit for detecting the completion time when the cleaning and disinfecting treatment of the purifying device is completed and the cleaning and disinfecting treatment of the plurality of blood purifying devices is completed is provided.

Further, in the blood purification system according to another embodiment of the present invention, in addition to the drug solution, the above-mentioned drug solution supply device for feeding the dialysate and the dialysate delivered from the drug solution supply device are used. It is provided with a plurality of blood purification devices for performing blood purification treatment on a patient.

According to the present invention, it is possible to provide a chemical solution supply device and a blood purification system that provide a chemical solution supply device and a blood purification system capable of appropriately performing cleaning and disinfection without wasting the chemical solution.

It is a schematic block diagram which shows an example of the blood purification system which concerns on 1st Embodiment of this invention. It is a block diagram which shows an example of the control system of the dialysate supply apparatus shown in FIG. It is a block diagram which shows an example of the control system of the dialysis monitoring apparatus shown in FIG. It is a flowchart which shows an example of the process of cleaning and disinfection. FIG. 1 is a sequence diagram showing an example of the operation of the blood purification system shown in FIG. 1, FIG. 1A is a diagram showing an example of the operation of the dialysate supply device, and FIG. 1B is an example of the operation of one dialysate device. FIG. 3C is a diagram showing an example of the operation of another dialysis machine. FIG. 1 is a sequence diagram showing an example of the operation of the blood purification system shown in FIG. 1, FIG. 1A is a diagram showing an example of the operation of the dialysate supply device, and FIG. 1B is an example of the operation of one dialysate device. It is a figure which shows. It is a figure which shows an example of the wash-out recording screen. It is a schematic block diagram which shows an example of the blood purification system which concerns on 2nd Embodiment of this invention.

[First Embodiment]
Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 7.
(Blood purification system)
FIG. 1 is a schematic configuration diagram showing an example of a blood purification system according to the first embodiment of the present invention. As shown in FIG. 1, the blood purification system 1 includes a plurality of dialysis monitoring devices (hereinafter, also referred to as “dialysis devices”) 3 as an example of a plurality of blood purification devices for performing dialysis treatment on a patient. A dialysate as a blood purifying solution used for purifying the patient's blood and a chemical solution used for cleaning and disinfecting the piping of the dialysis machine (hereinafter, also referred to as "washing solution") are prepared and supplied to the dialysis machine 3. , A dialysate supply device 2 as an example of a drug solution supply device, and a supply line 10 (see the solid line in FIG. 1) for transporting dialysate and washing solution between the dialysate supply device 2 and each dialysate device 3. A signal line 11 (see the broken line in FIG. 1) for communicably connecting the dialysate supply device 2 and each dialysate 3 is provided. The cleaning solution is an example of a chemical solution.

The dialysate supply device 2 prepares a dialysate or washing solution having a predetermined concentration using the supplied dialysate water, and supplies the prepared dialysate or washing solution to each dialysing device 3. The dialysate prepared by the dialysate supply device 2 is supplied to each dialysate device 3 via the supply line 10 (see the arrow in FIG. 1).

A plurality of dialysis devices 3 are installed according to blood purifiers (dialyzers, not shown) for performing dialysis treatment on patients, and dialysate supplied from the dialysate supply device 2 is supplied to each blood purifier. The dialysate containing waste products and the like discharged from the blood purifier is discharged to a drainage flow path (not shown).

In the blood purification system 1 according to the present embodiment, the dialysate supply device 2 and each dialysate device 3 can communicate with each other via the signal line 11, and in the dialysate supply device 2, each dialysate device 3 It is possible to detect the operating status of. The communication mode between the dialysate supply device 2 and each dialysate device 3 is not limited to wired communication using the signal line 11, and may be, for example, wireless communication.

(Dialyzate supply device 2)
FIG. 2 is a block diagram showing an example of the control system of the dialysate supply device 2 shown in FIG. As shown in FIG. 2, the dialysate supply device 2 is prepared by a control unit 20 that controls each unit, a storage unit 21 that stores various information, and a preparation unit 22 that prepares the dialysate and the washing solution. Communication is performed between the liquid feeding unit 23 that sends the dialyzed liquid and the cleaning liquid to each dialyzer 3, the operation display unit 24 that inputs and displays information, and each dialyzer 3 via the signal line 11. It is provided with a communication unit 25 for performing. The adjusting unit 22 is an example of a chemical solution preparing unit. The liquid feeding unit 23 is an example of a chemical liquid feeding unit.

[Control unit 20]
The control unit 20 is realized by appropriately combining arithmetic elements such as a CPU, software, an interface, and the like. The control unit 20 functions as a receiving means 200, a transmitting means 201, a valve controlling means 202, a pump controlling means 203, a display controlling means 204, and the like by operating according to a program implemented in software (not shown). Details of each means 200 to 204 will be described later.

[Storage 21]
The storage unit 21 is composed of a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk, and the like, and stores various data such as system configuration information 210, washing process time information 211, and washing completion time information 212. To do.

The system configuration information 210 is information regarding the configuration of the blood purification system 1. The system configuration information 210 includes, for example, identification information such as an ID that identifies each dialysis machine 3, setting information, and arrangement information of the dialysis machine 3.

The washing process time information 211 is the time (hereinafter, "washing process time") in which the dialysate supply device 2 continues the washing and disinfecting process (hereinafter, also referred to as "washing and disinfecting process" or simply "washing process"). "Or simply" process time "). Here, the "washing process time" is given as, for example, a time (hereinafter, also referred to as "liquid feeding time") for the dialysate supply device 2 to continue sending the washing liquid. Further, the washing process time is a fixed value preset by the user based on an empirical rule or the like. The washing completion time information 212 is information that records the time when the washing process is completed for each dialysis machine 3.

[Preparation unit 22]
The preparation unit 22 dilutes the dialysate stock solution with the supplied dialysate water to prepare the dialysate, and dilutes the wash-off solution stock solution with the supplied dialysate water to prepare the wash-off solution. The preparation unit 22 has a water supply valve 220 that can switch the supply or non-supply of dialysis water by opening and closing a liquid supply line (not shown) to which dialysis water is supplied from one end, and a dialysate stock solution for generating dialysate. The undiluted solution injection pump 221 that injects the dialysate undiluted solution from the undiluted solution tank 4A that stores the undiluted solution into the undiluted solution line, and the undiluted solution that injects the undiluted solution undiluted solution into the undiluted solution from the undiluted solution tank 4B that stores the undiluted solution undiluted solution. It is equipped with an injection pump 222. The washing solution stock solution is an example of a chemical solution stock solution.

As the water supply valve 220, for example, a solenoid valve, an electric valve, or the like can be used. As the stock solution injection pump 221 and the cleaning solution injection pump 222, for example, a piston pump can be used.

In the example shown in FIG. 2, the configuration in which the undiluted solution tank 4A and the washing and rinsing liquid tank 4B are provided outside the dialysate supply device 2 is described as an example, but the undiluted solution tank 4A and the washing and rinsing liquid tank 4B are described. Each may be provided inside the dialysate supply device 2. For example, the undiluted solution tank 4A and the washing and rinsing solution tank 4B may be provided as one of the components of the preparation unit 22.

The undiluted solution may be one type or two or more types. For example, the stock solution may consist of two types, A stock solution and B stock solution. In this case, two stock solution tanks 4A (that is, A stock solution tank and B stock solution tank) may be provided for each stock solution. The cleaning solution may be of one type or two or more types. As the cleaning solution, for example, an acid cleaning solution, a peracetic acid disinfecting solution, a hypochlorite disinfecting solution, or the like may be used.

[Liquid transfer unit 23]
The liquid feeding unit 23 has a storage tank 230 for storing the dialysate and the washing solution prepared by the preparing unit 22, and a liquid feeding pump 231 for sending the dialysate and the washing and cleaning liquid in the storage tank 230. .. A liquid feeding line is connected to the storage tank 230, and dialysate and washing and scavenging liquid are supplied from the liquid feeding line.

The liquid feed pump 231 is provided in the supply line 10. As the liquid feed pump 231, for example, a centrifugal pump can be used.

[Operation display unit 24 and communication unit 25]
The operation display unit 24 is, for example, a touch panel display, and has a configuration in which a touch panel is superposed on a display such as a liquid crystal display. Further, the operation display unit 24 is not limited to the touch panel display, and may be a display of a terminal device (not shown) provided outside the dialysate supply device 2. The communication unit 25 transmits / receives a signal to / from the dialysis machine 3 via the signal line 11.

[Each means 200 to 204 of the control unit 20]
Next, the details of the means 200 to 204 constituting the control unit 20 will be described. The receiving means 200 controls the communication unit 25 to receive various information transmitted from the dialysis apparatus 3 via the signal line 11. The transmission means 201 transmits information such as a control signal for controlling the dialysis device 3 to the dialysis device 3 via the signal line 11.

The valve control means 202 controls the opening and closing of the water supply valve 220. When the water supply valve 220 is closed, the supply amount of dialysate water becomes zero, and the injection amount of the undiluted solution becomes zero accordingly, and the dialysate and wash solution are prepared (or the dialysate and wash solution are diluted). It is supposed to be stopped. That is, the valve control means 202 controls the presence or absence of preparation of dialysate and wash-off liquid by opening and closing the water supply valve 220.

The pump control means 203 controls various pumps in the dialysate supply device 2, that is, the stock solution injection pump 221 and the wash-off liquid injection pump 222 and the liquid delivery pump 231. Specifically, the pump control means 203 adjusts the dialysate to a predetermined concentration by controlling the injection amount of the dialysate stock solution (that is, the discharge amount of the stock solution injection pump 221) according to the supply amount of dialysate water. To do. Further, the pump control means 203 controls the injection amount of the wash-off liquid stock solution (that is, the discharge amount of the wash-off liquid injection pump 222) according to the supply amount of dialysis water to bring the wash-off liquid to a predetermined concentration. adjust. In addition, a process of injecting a chemical solution in advance may be used.

The display control means 204 controls, for example, to display a display screen such as the wash-out recording screen 5 (see FIG. 7) on the operation display unit 24.

(Dialysis device 3)
FIG. 3 is a block diagram showing an example of a control system of the dialysis machine 3. As shown in FIG. 3, the dialysis apparatus 3 inputs and displays information, a control unit 30 that controls each unit, a storage unit 31 that stores various types of information, a sensor unit 32 that detects dialysate and chemicals, and information. The operation display unit 34 for performing the above operation and the communication unit 35 for communicating with the dialysate supply device 2 via the signal line 11 are provided. The sensor unit 32 is an example of a detection unit.

Since the operation display unit 34 and the communication unit 35 of the dialyzer 3 have substantially the same functions as the operation display unit 24 and the communication unit 25 of the dialysate supply device 2 described above, detailed description thereof will be omitted. ..

[Control unit 30]
The control unit 30 of the dialysis apparatus 3 functions as a receiving means 300, a transmitting means 301, a detecting means 302, and the like. Details of each means 300 to 302 will be described later.

[Storage 31]
The storage unit 31 of the dialysis apparatus 3 stores data such as wash-out time estimation information 310. The wash-out time estimation information 310 is also referred to as the time estimated to be required from the reference time (hereinafter, also simply referred to as “reference time”) to the completion of the wash-out process (hereinafter, also referred to as “estimated wash-out required time”). This is parameter information indicating). The wash-out time estimation information 310 is a fixed value that is preset by the user's operation based on an empirical rule or the like. The wash-off time estimation information 310 may be given, for example, as time or as the volume of wash-off liquid.

Specifically, the time for completing the washing process (hereinafter, also referred to as “washing completion time”) is specified according to the reference time and the information recorded as the washing time estimation information 310. More specifically, the washing completion time may be the time when a predetermined time stored in the storage unit 31 as the washing time estimation information 310 elapses from the reference time. Alternatively, the washing completion time is defined as the time when a predetermined amount of washing liquid stored in the storage unit 31 as the washing time estimation information 310 is sent to the dialysis apparatus 3 from the reference time. May be good.

For the reference time, for example, clean water as dialysis water used in the pre-washing (see S2 in FIG. 4) described later (specifically, RO water subjected to RO (Reverse Osmosis) membrane treatment, etc.) is used. The time of replacement with the washing solution, more specifically, the time of completion of replacement of RO water with the washing solution (hereinafter, also referred to as “replacement completion time”) may be used. Here, the "replacement completion time" may be, for example, the time when the sensor unit 32 detects that the washing solution has been injected into the piping unit (not shown) of the dialysis machine 3. The reference time is not necessarily limited to the time when the replacement of RO water with the wash-off solution is completed, and is, for example, the time when the dialysate supply device 2 starts sending the wash-off solution to the dialysate device 3. May be good. When the wash-out time estimation information has elapsed, the dialysis apparatus 3 updates the status to the disinfection end state and notifies the dialysate supply apparatus 2 of the status.

[Sensor unit 32]
The sensor unit 32 includes at least one sensor that detects the wash-off liquid sent to the dialysis machine 3. As an example, the sensor unit 32 includes, for example, a conductivity meter 320 for measuring the conductivity of a fluid flowing through a piping unit, an absorbance meter 321 for measuring the absorbance of the fluid, and the like. The sensor unit 32 is provided at a predetermined position in the piping unit of the dialysis machine 3.

[Each means 300 to 302 of the control unit 30 of the dialysis machine 3]
Next, the details of the means 300 to 302 constituting the control unit 30 of the dialysis machine 3 will be described. The receiving means 300 controls the communication unit 35 of the dialysis apparatus 3 to receive information such as a control signal transmitted from the dialysate supply apparatus 2 via the signal line 11.

The transmission means 301 transmits various information such as information indicating the operating status of the dialysate device 3 to the dialysate supply device 2 via the signal line 11. The "information indicating the operating status" includes, for example, information indicating that the washing process has been completed and information such as the time (that is, washing completion time information 212). The detection means 302 controls the sensor unit 32 to detect that the RO water in the piping unit has been replaced with the cleaning solution.

(Washing process)
FIG. 4 is a flowchart showing an example of the washing process. As shown in FIG. 4, in the washing step, after the supply of the dialysate is completed (S1), the step of pre-cleaning the dialyzer 3 (S2), and then washing and disinfecting the piping portion of each dialyzer 3 is performed. The step (S3) and the step (S4) of post-cleaning the dialysis machine 3 are included.

Here, "end of supply of dialysate" means that one treatment (a series of treatments including blood removal, dialysis, and blood return) for one patient has been completed. "Pre-cleaning" means injecting RO water into the piping portion to wash away the residual dialysate.

In the washing step, the washing liquid is sent to each dialysis machine 3, and the dialysis machine 3 is washed and disinfected. When a plurality of types of wash-off liquids are used in the wash-off step, a step of washing away the one wash-off liquid with RO water may be further included while switching from one wash-off liquid to another.

"Post-cleaning" means injecting RO water into the piping portion to wash away the residue of the cleaning solution (when a plurality of cleaning solutions are used, the cleaning solution used last).

(Operation of blood purification system 1)
Next, an example of the operation of the blood purification system 1 according to the first embodiment will be described. In the following description, the operation of the blood purification system 1 will be described separately for (1) when the washing process time is shortened and (2) when the washing process time is extended.

(1) Operation when shortening the washing process time FIG. 5 is a sequence diagram showing an example of the operation of the blood purification system 1 shown in FIG. 1, and (a) is an example of the operation of the dialysate supply device 2. (B) is a diagram showing the dialysis apparatus 3 arranged on the most upstream side of the plurality of dialysis apparatus 3 (hereinafter, particularly, when the dialysis apparatus 3 is specified separately from the other dialysis apparatus 3, "the most upstream dialysis apparatus 3". An example of the operation of (also referred to as "device 3A") is shown, and (c) is specified by distinguishing the dialysis device 3 (hereinafter, particularly, particularly other dialysis device 3) arranged on the most downstream side of the plurality of dialysis devices 3. In this case, an example of the operation of the "most downstream dialysis machine 3Z") is shown.

Here, the “upstream” refers to the side closer to the dialysate supply device 2, and the “downstream” refers to the side far from the dialysate supply device 2. The "most upstream" is not necessarily limited to the one in which the distance from the dialysate supply device 2 is the smallest among the plurality of dialysis machines 3, and is first washed out among the plurality of dialysis machines 3. Includes where the process begins or completes. Similarly, the "most downstream" shall include a plurality of dialysis machines 3 in which the washing step is finally started or completed.

In the following description, the time axis of abscissa, "t _s" time washing extinguishing process is initiated in the blood purification system 1, the time washing extinguishing process at the most upstream of the dialysis device 3A has been completed "t _a ", the amount of time washing extinction process has been completed of the most downstream of the dialysis machine 3Z is referred to as" t _Z ".

Here, the time t _s of washing extinguishing process in the blood purification system 1 is started, for example, be a time liquid delivery wash extinguishing liquid by the dialysate supplying device 2 is started. The time t _Z of washing vanishing process is completed at the most downstream of the dialysis device 3Z is also the time of blood purification system 1 as a whole washing extinction process has been completed.

The time for the dialysate supply device in the comparative example to complete the washing step is t _f (see FIG. 9). This time t _f is the time when the dialysate supply device finishes sending the wash-off liquid to the dialysate device 3. Further, in the dialysate supply device in the comparative example, the difference (t _{f −} t _s) between the time t _{f at} which the washing liquid feeding is completed and the time t _s at which the washing process is started is used as the washing process time. ) Corresponds to a preset time. In the description of this operation, the time t _f in which the dialysate supply device in the comparative example completes the washing process is set to be later than the time t _{z in} which the washing process of the most downstream dialysing device 3Z is actually completed. It is assumed that (that is, t _Z <t _f ).

As shown in FIG. 5A, the dialysate supply device 2 has a plurality of dialysate devices 3 connected to the dialysate supply device 2 according to a wash-out process time preset as the wash-off process time information 211. (Refer to the dashed double-headed arrow in FIG. 5 (a)). Here, the washing process time preset in the dialysate supply device 2 according to the present embodiment is the time t _Z at which the washing process of the most downstream dialysis machine 3Z is actually completed and the dialysis machine on the most upstream side. The time at which the washing step of 3A is completed may be set as the time corresponding to the difference from t _A (t _{Z −} t _s ). A specific example of the washing process time will be described later (see FIG. 7).

Washing extinguishing liquid during the set washing vanishing process time (t Z _{-t s),} it continues to be supplied from the upstream side to the downstream side. Then, the wash-off liquid supplied from the dialysate supply device 2 is taken into the dialysis device 3 on the upstream side in order from the dialysis device 3 on the downstream side. That is, the washing solution is first taken into the most upstream dialysis machine 3A, then taken into the downstream dialysis machine 3 in order, and finally taken into the most downstream dialysis machine 3Z.

The time from when the dialysate supply device 2 starts sending the washing solution to the time when the washing solution is taken into each dialysate 3 is, for example, between the dialysate supply device 2 and each dialysate device 3. It is determined by the distance between the supply lines 10 and the speed at which the wash-off liquid is sent (that is, the amount of the wash-off liquid sent per unit time).

The dialysis machine 3 starts the washing process when the washing liquid is taken in. In the configuration of the blood purification system 1 according to the present embodiment, first, washing and disinfection (washing step) is started by the most upstream dialysis device 3A, and in order, the washing step is started by the downstream dialysis device 3. Finally, the washing process is started in the most downstream dialysis machine.

Further, in each dialysis apparatus 3, the washing process is completed when a predetermined time has elapsed from the start of the washing process. Here, the predetermined time is, for example, the time recorded as the above-mentioned wash-out time estimation information 310. In the configuration of the blood purification system 1 according to the present embodiment, as shown in FIG. 5 (b), first, the washing process with the most upstream dialysis machine 3A is completed (see “t _A ”). Next, the washing process in the dialysis machine 3 on the downstream side is completed in order. Finally, wash consumption process in the most downstream of the dialyzer 3Z is completed (see "t _Z".).

When washing extinguishing process at the most downstream of the dialysis device 3Z is complete (see "t _Z".), Preset washing vanishing process time in the dialysate supplying device 2 (i.e., (t Z _{-t s))} has elapsed Then, the sending of the wash-off liquid by the dialysate supply device 2 is completed.

As described above, a predetermined appropriate washing process time is set in the dialysate supply device 2, and the dialysate supply device 2 stops sending the washing solution according to the appropriate washing process time. As a result, it is possible to shorten the time required for sending the washing and scavenging liquid by the dialysate supply device 2 as compared with the comparative example. In this way, wasteful consumption of the wash-off liquid due to continuous feeding of the wash-off liquid after the washing-out process is completed in all the dialysate 3 connected to the dialysate supply device 2 is eliminated. It can be suppressed and the consumption of cleaning solution can be reduced.

(2) Operation when the washing process time is extended FIG. 6 is a sequence diagram showing an example of the operation of the blood purification system 1 shown in FIG. 1, and (a) is an example of the operation of the dialysate supply device 2. (B) is also referred to as "any dialysis machine 3N" when it is specified by distinguishing it from any dialysis machine 3 (hereinafter, particularly other dialysis machines 3) among a plurality of dialysis machines 3. It is a figure which shows an example of the operation of.). In the description of this operation, the time t _f for the dialysate supply device in the comparative example to complete the washing process is before the time t _{N for} actually completing the washing process for any of the dialysate 3N. It is assumed that it is set to (that is, t _f <t _N ).

Hereinafter, as shown in FIG. 6B, in any of the dialysis machines 3N, a case where the dialysis machine 3 temporarily stops operating for some reason during the washing process will be described as an example. In FIG. 6 (b), as an example of a case where dialyzer 3 no longer temporarily operation, pipe section of the dialysis device to the time t ₁ with 3 stops the operation of the pipe unit has resumed thereafter t ₂ The case will be described as an example.

As shown in FIG. 6A, the dialysate supply device 2 is connected to the dialysate supply device 2 according to the washing process time set in the storage unit 21 as the washing process time information 211. The washing solution is sent to the plurality of dialysis machines 3 (see the dashed double-headed arrow in FIG. 6A).

Here, the washing process time may be a time corresponding to (t _{N −} t _s ). The wash-out process time (t _N- t _s ) may be determined according to the time (t _2- t ₁ ) when the wash-out process is interrupted. By setting the washing process time to the above value, even if the washing process is temporarily interrupted by any of the dialysis machines 3N, the dialysate supply device 2 can use the dialysis machine 3N. The sending of the washing and erasing liquid can be continued until the washing and erasing process in (see "t _N ") is completed.

By doing so, the washing process is temporarily interrupted by any of the dialysis machines 3N, and the interrupted time (t _2- t ₁ ) becomes a certain length or more, and in the comparative example, the washing is performed. Even if the rinsing process is not completed by the time t _f when the erasing liquid is sent, the restarted rinsing process is executed to the end without leaving the erasing and disinfecting state insufficient. Can be made to.

Further, the washing process time is not necessarily limited to a fixed value, and may be a variable value that can be changed during the washing process. Specifically, for example, when the dialysis apparatus 3 does not operate (e.g., when the stop of the pipe portion is detected), the preset value in Comparative Example (e.g., (t f _{-t s))} May be changed to a time (for example, (t _N− t _s )) in consideration of the above-mentioned interruption time.

(Display screen)
FIG. 7 is a diagram showing an example of a wash-out recording screen. As described above, the wash-out recording screen 5 is created according to the wash-out completion time information 212 transmitted from each dialysate device 3 to the dialysate supply device 2, and the display control means 204 operates the dialysate supply device 2. It is controlled to be displayed on the display unit 24.

As shown in FIG. 7, the wash-out recording screen 5 includes, for example, the following information. The information contained in the wash-out recording screen 5 is summarized in Table 1 below.

The wash-out recording screen 5 displays an appropriate wash-out process time to be set in the dialysate supply device 2 in advance. The appropriate washing step time is obtained from the washing completion time of each of the plurality of dialysis machines 3 (particularly, the final washing completion time). The user can set an appropriate washing process time in the dialysate supply device 2 in advance by referring to the information displayed on the washing recording screen 5. For example, in the example shown in FIG. 7, the user may preset a parameter of “70 minutes” displayed in the washing completion time column 53 as an appropriate washing process time in the dialysate supply device 2. “Appropriate wash-out process time” is an example of candidate values for wash-out process time.

[Second Embodiment]
Next, the blood purification system 1 according to the second embodiment of the present invention will be described. FIG. 8 is a schematic configuration diagram showing an example of the blood purification system 1 according to the second embodiment of the present invention. The blood purification system 1 according to the second embodiment is different from the blood purification system 1 according to the first embodiment in that it further includes a lysing device 6 and a water treatment device 7. Hereinafter, the points different from those of the first embodiment will be mainly described.

The blood purification system 1 further includes a dissolution device 6 and a water treatment device 7 connected to the dialysate supply device 2 via the supply line 10 in addition to the configuration of the blood purification system 1 according to the first embodiment. Further, the dissolution device 6 and the water treatment device 7 are configured to be communicable with the dialysate supply device 2 via the signal line 11.

The dissolving device 6 mixes the dialysate and RO water to generate a stock solution of the dialysate. The water treatment device 7 includes a filtration unit (not shown) having a filtration membrane or the like inside, and filters raw water to generate RO water. The dissolution device 6 and the water treatment device 7 are configured so that the washing / erasing step is performed at the same timing as the dialysate device 3 under the control of the dialysate supply device 2.

In the present embodiment, the time for sending the wash-off liquid by the dialysate supply device 2 is changed without performing the work set by the user. Specifically, the control unit 20 of the dialysate supply device 2 updates the washing process time information 211 according to the washing completion time information 212 stored in the storage unit 21. The dialysate supply device 2 continues to feed the liquid according to the latest updated wash-out process time information 211.

As described above, the dialysate supply device 2 can send the washing solution to the dialyzer 3, the dissolving device 6, and the water treatment device 7 in an appropriate washing process time. It is possible to suppress wasteful consumption of the cleaning solution without completing the cleaning process in a state of insufficient disinfection.

(Modification example)
The dialysate supply device 2 may stop the delivery of the wash-off liquid when the final wash-off step is completed, regardless of the wash-off process time information 211. Specifically, when the receiving means 200 of the dialysate supply device 2 receives information indicating that the washing process has been completed from the dialysing device 3 related to the final washing process, the sending of the washing solution is stopped. You may control to do so. Even in the above manner, since the dialysate supply device 2 can send the washing solution in an appropriate washing process time, the washing process is not completed in a state where the washing and disinfection are insufficient, and the washing is done. Wasteful consumption of liquid can be suppressed.

Although the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. It should also be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention. In addition, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention.

1 ... Blood purification system 10 ... Supply line 11 ... Signal line 2 ... Dialysate supply device 20 ... Control unit 200 ... Reception means 201 ... Transmission means 202 ... Valve control means 203 ... Pump control means 204 ... Display control means 21 ... Storage unit 210 ... System configuration information 211 ... Washing process time information 212 ... Washing completion time information 22 ... Preparation unit 220 ... Water supply valve 221 ... Stock solution injection pump 222 ... Washing solution injection pump 23 ... Liquid feeding unit 230 ... Storage tank 231 ... Feeding Liquid pump 24 ... Operation display unit 25 ... Communication unit 3, 3A, 3N, 3Z ... Dialysis device 30 ... Control unit 300 ... Reception means 301 ... Transmission means 302 ... Detection means 31 ... Storage unit 310 ... Washing time estimation information 32 ... Sensor unit 320 ... Conductivity meter 321 ... Absorbency meter 34 ... Operation display unit 35 ... Communication unit 4A ... Stock solution tank 4B ... Washing solution tank 5 ... Washing record screen 51 ... Start time column 52 ... Process column 53 ... Washing completed Time column 54 ... Washing completion determination column 55 ... Chemical solution usage column 56 ... Table 561 ... Device name column 562 ... Liquid feeding start time column 563 ... Replacement completion time column 564 ... First monitor data column 565 ... Washing completion time Column 566 ... Second monitor data column 567 ... Total liquid volume column 6 ... Dissolving device 7 ... Water treatment device

Claims (7)

In order to execute a cleaning and disinfecting treatment for performing at least one of cleaning and disinfection in the piping of a plurality of blood purification devices, a chemical solution feeding unit that supplies the chemical solution to the plurality of blood purification devices,
A communication unit that communicates with the plurality of blood purification devices,
When the communication unit communicates with the plurality of blood purification devices, the cleaning and disinfecting treatment of the last blood purification device among the plurality of blood purification devices is completed, and the cleaning and disinfecting treatment of the plurality of blood purification devices is completed. A detector that detects the completion time and
A chemical supply device equipped with. The control unit further includes a control unit that controls the chemical solution feeding unit to supply the chemical solution to the plurality of blood purification devices according to a process time preset according to the completion time.
The chemical solution supply device according to claim 1. The completion time is specified according to the time when the clean water used before the chemical solution is sent is replaced with the chemical solution and the predetermined estimated required time.
The drug solution supply device according to claim 1 or 2. A display control means for displaying a candidate value of the process time obtained from the completion time as well as the completion time of each of the plurality of blood purification devices is further provided.
The chemical solution supply device according to any one of claims 1 to 3. The control unit updates the process time according to the completion time of each of the plurality of blood purification devices.
The chemical solution supply device according to any one of claims 1 to 4. The control unit controls all of the plurality of blood purification devices to stop the delivery of the chemical solution by the chemical solution delivery unit when the cleaning and disinfecting treatment is completed.
The chemical solution supply device according to any one of claims 1 to 5. The chemical solution supply device according to any one of claims 1 to 6, which delivers a dialysate in addition to the chemical solution.
A plurality of blood purification devices for performing blood purification treatment on a patient using the dialysate sent from the drug solution supply device.
Blood purification system.

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