Blood purification device

Abstract

To provide a blood purification device capable of simply heating and quickly disinfecting blood.SOLUTION: A blood purification device 100 comprises a blood circuit 110, a dialysis circuit 120, and a dialyzer 130. A control circuit 10 supplies stored power to a heater 125 from a retransfusion battery in addition to a commercial current to generate heat to heat an antiseptic solution within the dialysis circuit and simultaneously causes the antiseptic solution to flow, with a dual pump 135 for disinfection.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a blood purification device that draws blood out to an external blood circuit for purification and then returns the blood.

Background Art

[0002] In a so-called dialysis treatment for purifying blood, a device that purifies blood by circulating it through an extracorporeal blood circuit while performing dialysis is widely used. In this device, the blood of an individual is introduced into the blood circuit and dialysis treatment using a dialysate is performed while returning the blood. Therefore, in a blood purification device, even if the blood circuit for circulating blood is exchanged each time, the dialysis circuit through which the dialysate flows along with various devices needs to be highly purified and reused repeatedly, and it is necessary to perform disinfection etc. before starting the treatment (for example, refer to Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in such a blood purification device, when heating a disinfectant solution to about the temperature of hot water, it takes a long time to heat with a small heater, and when installing a large heater, it is necessary to change the design of the current capacity of the device main body, and in some cases, it is necessary to perform construction to enhance the power supply of the facility where the treatment is performed.

[0005] Therefore, an object of the present invention is to provide a blood purification device that can be easily heated and the disinfection treatment can be completed quickly.

Means for Solving the Problems

[0006] One embodiment of the invention of a blood purification device that solves the above problems is a blood purification device comprising a blood purification unit, the device comprising: a disinfection unit that flushes a disinfectant solution through the flow path of the blood purification unit to disinfect the flow path; a heating unit that heats the disinfectant solution; and a control unit that controls the disinfection process of the disinfection unit and the heating process of the heating unit together with the blood purification process of the blood purification unit, wherein the heating unit generates heat when power is supplied from a commercial power source and also generates heat when power is supplied from an auxiliary power source to heat the disinfectant solution. [Effects of the Invention]

[0007] Thus, according to one aspect of the present invention, a blood purification device can be provided that can easily heat and quickly complete the disinfection process. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a diagram showing a blood purification device according to a first embodiment of the present invention, and is a circuit diagram showing its schematic overall configuration. [Figure 2] Figure 2 is a circuit diagram showing the circuit during the disinfection process of the dialysis circuit. [Figure 3] Figure 3 is a block diagram showing the configuration for executing that control process. [Figure 4] Figure 4 is a graph illustrating the temperature changes during the disinfection process of the dialysis circuit. [Figure 5] Figure 5 is a process diagram illustrating the disinfection process of the dialysis circuit. [Figure 6] Figure 6 is a timing chart illustrating the disinfection process for each disinfection step in the dialysis circuit. [Figure 7] Figure 7 is a block diagram of the main components showing another embodiment of the heating element. [Figure 8] Figure 8 shows a blood purification device according to a second embodiment of the present invention, where (a) is a partially cutaway plan view showing the structure of its heating element, and (b) is a circuit diagram showing its resistance components. [Figure 9]Figure 9 is a block diagram showing the configuration for executing that control process. [Figure 10] Figure 10 shows a blood purification device according to a third embodiment of the present invention, and is a circuit diagram showing the circuit during disinfection treatment of the dialysis circuit. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0010] <First Embodiment> Figures 1 to 6 show a blood purification device according to the first embodiment of the present invention. In Figure 1, the blood purification device 100 is constructed to function as a means of purifying a patient's blood, comprising a blood circuit 110, a dialysis circuit 120, and a dialyzer 130. This blood purification device 100 is a medical device that performs dialysis treatment (blood purification process) by having a control circuit (control unit) 10 execute a control program stored in memory in advance, thereby driving each part of the device, including the blood circuit 110 and the dialysis circuit 120, based on input operations from the operation panel 105 (see Figure 3) and various sensor information, to dialysis and purify the patient's blood by passing it through the dialyzer 130.

[0011] The blood circuit 110 is constructed so that the patient's blood flows through it, with a dialyzer 130 interposed between a blood withdrawal line 111 and a blood return line 113 made of flexible tubing. The blood circuit 110 has a connector 112 attached to the end of the blood withdrawal line 111, which is connected to one end of the dialyzer 130, for connecting an arterial puncture needle for puncturing the patient's artery, and a connector 114 attached to the end of the blood return line 113, which is connected to the other end of the dialyzer 130, for connecting a venous puncture needle for puncturing the patient's vein. In addition, a blood pump 115 of a tube pump is located on the blood withdrawal line 111 side, and an air trap chamber 117 is located on the blood return line 113 side.

[0012] In this blood circuit 110, the control circuit 10 drives the blood pump 115 on the blood extraction line 111 side, so that the blood extracted from the arterial side of the patient and subjected to blood extraction is dialyzed and purified by passing through the dialyzer 130. Thereafter, the blood subjected to defoaming treatment to remove the dissolved air by the air trap chamber 117 on the blood return line 113 side is returned to the venous side of the patient for blood return.

[0013] The dialysis circuit 120 is connected by connectors 121c and 131c such that the dialyzer 130 is interposed between the introduction line 121 and the discharge line 131 of the flexible tube, and is constructed to allow the patient's blood to pass through a dialysis fluid of a predetermined concentration for dialysis and purification treatment. The dialysis circuit 120 has solenoid valves V1 and V2 arranged together with a filtration filter 123, a heater (heating section) 125, and a thermistor (temperature sensor) 127 on the introduction line 121 side, and solenoid valves V3 and V4 arranged together with a bypass line 133 having a water removal pump 132 on the discharge line 131 side. The dialysis circuit 120 has a duplex pump 135 arranged to straddle between these introduction line 121 and discharge line 131, and bypass lines 137 and 139 each provided with solenoid valves V5 and V6 are arranged.

[0014] In this dialysis circuit 120, the control circuit 10 drives the duplex pump 135 to draw in the dialysis fluid adjusted to a predetermined concentration from the inlet 121i of the introduction line 121 and send it to the dialyzer 130 through the filtration filter 123, while discharging the dialysis fluid containing waste products and the like dialyzed by the dialyzer 130 from the outlet 131o. This dialysis circuit 120 is constructed such that the control circuit 10 drives the water removal pump 132 of the bypass line 133 to perform water removal treatment on the blood flowing through the dialyzer 130.

[0015] At this time, in the dialysis circuit 120, based on the temperature information of the dialysate in the introduction line 121 measured by the thermistor 127, the control circuit 10 energizes the heater 125 to cause it to generate heat, thereby heating the dialysate in the introduction line 121 to maintain a dialysis treatment temperature suitable for blood purification treatment at about the patient's body temperature. Here, the solenoid valves V1 to V6 are opened and closed by the control circuit 10 so as to block or open the flow paths in each line at any desired timing.

[0016] Here, the dialyzer 130 is connected to the introduction line 121 and the discharge line 131 of the blood circuit 110, and a flow path is formed inside the hollow fiber (not shown) through which the dialysate flows in and flows. The dialyzer performs a dialysis treatment to precipitate waste products, excess moisture, etc. contained in the patient's blood flowing inside the hollow fiber using the micropores of the blood purification membrane, thereby purifying the patient's blood. From such a structure, the blood circuit 110, the blood removal line 111 and the blood return line 113 soiled by the patient's blood are removed from the blood pump 115 of the tube pump and are used in a disposable manner together with the dialyzer 130.

[0017] On the other hand, the dialysis circuit 120 is constructed with components such as the heater 125 and the filter 123 together with mechanisms such as the dual pump 135 and the solenoid valves V1 to V6, and since the dialysate is caused to flow, it is generally cleaned by disinfection or the like and reused repeatedly.

[0018] Therefore, as shown in FIG. 2, the dialysis circuit 120 connects the connectors 121c and 131c of the introduction line 121 and the discharge line 131 to form a closed circuit, and while the control circuit 10 drives the dual pump 135 and the water removal pump 132, closes the solenoid valves V1 and V4, and opens the solenoid valve V6 to form a flow path, thereby performing a disinfection treatment for circulating the disinfectant. At this time, in the dialysis circuit 120, the control circuit 10 opens and closes the solenoid valves V2, V3, and V5 at an arbitrary timing, thereby appropriately switching the circulation path via the bypass line 137 and the connectors 121c and 131c to perform the disinfection treatment.

[0019] Specifically, as shown in Figure 3, the blood purification device 100 converts AC power from the commercial power supply CPS connected to the outlet into DC current via the AC / DC converter 19, and supplies power to each part of the device, including the control circuit 10, to perform dialysis. For example, the control circuit 10 operates by energizing the heater 125 based on the temperature information of the disinfectant solution in the introduction line 121 of the dialysis circuit 120 measured by the thermistor 127. This heats the disinfectant solution in the introduction line 121, and maintains a temperature suitable for disinfection by flowing it as hot water through the flow paths of the introduction line 121 and the discharge line 131.

[0020] Furthermore, the blood purification device 100 is equipped with a battery (auxiliary power supply) 11 as an auxiliary power source. For example, in the event of a power outage, the control circuit 10 receives the stored power from the battery 11 and drives the blood pump 115 to perform the blood return process, which returns blood to the patient. The stored power from the battery 11 is adjusted to the desired voltage by the voltage conversion circuit 13 and supplied as needed. In this embodiment, the case of supplying power from the battery 11 is described as an example, but it is not limited to this, and it goes without saying that power may also be supplied from a generator or other peripheral devices.

[0021] Furthermore, when disinfecting the dialysis circuit 120, the control circuit 10 rapidly raises the temperature of the disinfectant solution in the introduction line 121 by utilizing the power stored in the battery 11 in addition to the power from the commercial power supply (hereinafter also referred to as commercial power). After the temperature rises, the control circuit 10 maintains the disinfectant solution at the desired temperature for a desired period of time using commercial power while simultaneously performing the process of storing energy in the battery 11. In other words, the heater 125 functions as a shared heater that generates heat by being supplied with commercial power and energy stored in the battery 11.

[0022] As shown in Figure 4, the control circuit 10 starts heating the disinfectant solution in the introduction line 121 with a delay after the heater 125 is energized. The control circuit 10 sets the start of this heating as the disinfection process start timing Cs for the dialysis circuit 120 and rapidly heats the disinfectant solution while circulating it through the discharge line 131. At this time, the control circuit 10 adjusts the power supply to the heater 125 so that the temperature To immediately after the heater 125 in the introduction line 121 does not exceed the target temperature Tt, in order to prevent the disinfectant solution from boiling. Furthermore, since the temperature Ti of the disinfectant solution at points in the dialysis circuit 120 away from the heater 125 rises with a delay, the control circuit 10 maintains a temperature above the desired temperature for the desired period of time by referring to preset heating conditions that allow for sufficient disinfection effect from the point when the temperature To near the heater 125 reaches the target temperature Tt. Specifically, the control circuit 10 reduces the amount of current supplied as the temperature To near the heater 125 approaches the target temperature Tt. For example, similar to pulse width modulation (PWM), it adjusts the supply time and stop time according to the temperature difference to prevent the disinfectant solution being heated from boiling and causing a sudden increase in pressure in the dialysis circuit 120, which could damage it. In other words, the heater 125 that heats the disinfectant solution, along with the dual pump 135 that circulates the disinfectant solution in the dialysis circuit 120 and the control circuit 10, constitute the disinfection unit.

[0023] Here, the control circuit 10 supplies (energizes) the heater 125 with commercial power and the stored power of the battery 11 to heat the disinfectant solution in the introduction line 121 to meet the set heating conditions. In this case, the heating of the disinfectant solution may be performed for a set period with a margin depending on the performance of the heater 125, so as to satisfy the desired temperature or higher for a desired period. At this time, the control circuit 10 may, for example, monitor the temperature detected by the thermistor 127 and move to the next processing step when the desired temperature or higher for a desired period is met, thereby avoiding insufficient heating, wasted heating time or power consumption due to the influence of room temperature, water temperature, voltage fluctuations, etc., and completing the disinfection process of the dialysis circuit 120 quickly and reliably.

[0024] Furthermore, the control circuit 10 detects the remaining charge in the battery 11 by detecting either the voltage, the discharge current, or both. Before the battery 11's charge is depleted, the control circuit 10 stops discharging (supplying) the battery 11's stored power, allowing the heater 125 to operate using only commercial power, thereby preventing deterioration of the battery 11 due to over-discharge. In this case, the control circuit 10 displays various information, such as the battery 11's depletion or extension of the heating time, on the operation panel 105 (which may also be a buzzer or indicator light), prompting the user, upon notifying of the decrease in the battery 11's charge, to check for deterioration of its storage capacity and take appropriate action. This ensures reliable long-term effective use of the battery 11 and prevents the need for premature battery replacement, thus avoiding increased costs.

[0025] In detail, as shown in Figures 5 and 6, the control circuit 10 executes a control program in memory according to instructions received from the operation panel 105 after the completion of treatment to perform an automatic disinfection process (disinfection method) of the dialysis circuit 120.

[0026] First, when the treatment (Mt) in which the blood circuit 110 is connected to the patient and the blood is dialyzed is completed, and the blood circuit 110 is disconnected from the patient, forming a closed circuit for the dialysis circuit 120, and when a termination instruction (Ce) is input from the control panel 105, the control circuit 10 performs shutdown processing for each part of the device, including partial operation of heating with commercial power for the heater 125.

[0027] At this time, the control circuit 10 assumes that an instruction has been received to perform an automatic disinfection process for the dialysis circuit 120, and performs a pre-washing process (S1) in which the used dialysis fluid in the dialysis circuit 120 is replaced with pure water and circulated for a predetermined time (set time). During this pre-washing, there is no power supply from the battery 11 or commercial power supply, the heater 125 remains stopped, and the temperature inside the dialysis circuit 120 is changed from approximately body temperature with the dialysis fluid used during treatment to room temperature with the replacement of the water with pure water.

[0028] After this, the control circuit 10 performs the main disinfection by replacing the pre-washed pure water in the dialysis circuit 120 with a disinfectant solution such as citric acid, raising the temperature, and circulating the disinfectant. In this main disinfection, the heater 125 is powered by both commercial power and the stored power of the battery 11 in a heating step (S2) to rapidly raise the temperature of the disinfectant solution in the dialysis circuit 120 to a target temperature. Then, the heater 125 is powered only by commercial power in a partial operation to maintain the disinfectant solution in the dialysis circuit 120 at a desired temperature for a predetermined time in a circulating disinfection step (S3). After this circulating disinfection step (S3), a charging process to store energy in the battery 11 is started in parallel. Herein, in this embodiment, the case in which citric acid is used as a disinfectant solution is described as an example, but it is not necessary to limit it to this, and it goes without saying that, for example, hot water disinfection of pure water or hypochlorite disinfection may also be used.

[0029] Next, the control circuit 10 performs a post-washing process (S4) in which the used disinfectant solution in the dialysis circuit 120 is replaced with pure water and circulated for a predetermined time. After this process, the control circuit 10 discharges the pure water that has been used for post-washing in the dialysis circuit 120 and waits (Mh). During this post-washing process, the temperature inside the dialysis circuit 120 is gradually reduced to room temperature as the high-temperature disinfectant solution is replaced with room-temperature pure water.

[0030] After this, the control circuit 10 performs a partial operation to prepare for treatment (Mp) by supplying dialysate to the dialysis circuit 120 in accordance with the treatment schedule of another patient, and by supplying only commercial power to the heater 125 to heat it.

[0031] <Effects of the First Embodiment> Thus, in the blood purification device 100 of this embodiment, during the disinfection process of the dialysis circuit 120, power can be supplied to the heater 125 from the battery 11 in addition to the commercial power supply to heat the disinfectant solution, allowing for easy heating and rapid completion of the disinfection process.

[0032] In this embodiment, we will describe the case in which a DC heater 125 is used as a shared heater as an example, but it is not limited to this, and it goes without saying that an AC heater may also be used, for example. In this case, as shown in Figure 7, the AC heater 21 can be configured to supply AC power by converting the DC power output by the control circuit 10 using the inverter 23.

[0033] <Second Embodiment> Next, Figures 8 and 9 show a blood purification device according to a second embodiment of the present invention. Here, since this embodiment is configured substantially the same as the embodiment described above, the drawings are reused and the same reference numerals are used to describe the characteristic parts (the same applies to other embodiments described below). In Figure 8, the blood purification device 100 is equipped with a heater 31 in which a heating element 31h is installed in the introduction line 121 of the dialysis circuit 120, instead of the heater 125 in the above embodiment. The heater 31 is constructed by housing within the heating element 31h a resistive component R1, which is made of nichrome wire or the like that generates heat when AC power from the energizing circuit 33ac is applied, and a resistive component R2, which is made of nichrome wire or the like that generates heat when DC power from the energizing circuit 33dc is applied.

[0034] As shown in Figure 9, the heater 31 can supply commercial AC power or stored DC power from the battery 11 by individually connecting the power supply circuits 33ac and 33dc to the control circuit 10, without the need for an intermediary voltage conversion circuit such as an AC / DC converter or inverter. Here, the heater 31 is described as having two heat-generating elements with resistive components R1 and R2, but it is not limited to this, and it goes without saying that it may also have three or more separate heat-generating elements.

[0035] <Effects of the second embodiment> Thus, in the blood purification device 100 of this embodiment, in addition to the effects and advantages of the above-described embodiment, the disinfection process of the dialysis circuit 120 can be performed with a simpler configuration and control.

[0036] <Third Embodiment> Next, Figure 10 shows a blood purification device according to a third embodiment of the present invention. In Figure 10, the blood purification device 100 has a heater 41 installed in the discharge line 131 of the dialysis circuit 120, in addition to the heater 125 installed in the introduction line 121 of the dialysis circuit 120 in the embodiment described above, and is connected to the control circuit 10. The heater 41 is positioned to divide the path of the dialysis circuit 120 into two parts with the heater 125 and is constructed to raise the temperature of the disinfectant solution flowing through it.

[0037] Heater 41 is installed in the discharge line 131, which is separated from heater 125 in the introduction line 121. The control circuit 10, like heater 125, is supplied with commercial power and stored power from battery 11 to heat and raise the temperature of the disinfectant solution flowing through the dialysis circuit 120. Here, heater 41 may be used as a dedicated heating unit that functions using stored power from battery 11 to reduce construction costs, and heater 125 may be used as a dedicated heating unit for commercial power to reduce construction costs even further. However, considering heating efficiency, it is advantageous to construct it as in this embodiment. Although the explanation uses the case where one heater 41 is added to the dialysis circuit 12 as an example, it is not limited to this, and it goes without saying that additional heaters may be installed in three or more locations, including heater 125.

[0038] As a result, the dialysis circuit 120, equipped with two heating units, heaters 125 and 41, can effectively raise the temperature of the disinfectant solution in the discharge line 131, which is difficult to heat at a remote location, and circulate it toward the introduction line 121, thereby efficiently and quickly reaching the target temperature Tt.

[0039] <Effects of the Third Embodiment> Thus, in addition to the effects and advantages of the above-described embodiment, the blood purification device 100 of this embodiment can more effectively and efficiently heat the disinfectant solution in the dialysis circuit 120 to perform the disinfection process.

[0040] In this embodiment, we will describe the case in which heater 41 is used together with heater 125 as a shared heater as an example, but this is not the only example. For instance, commercial power may be supplied to heater 125 as the first heater unit, and stored power from battery 11 may be supplied to heater 41 as the second heater unit.

[0041] <Summary of Embodiments> Next, the inventive features constituting the present invention are listed below, using the reference numerals and other symbols from the embodiments described above. It goes without saying that the following reference numerals and other symbols merely describe the components in the claims using the descriptions of the embodiments, and do not limit the components to specific materials or the like.

[0042] "1" A blood purification device (100) comprising a blood purification unit (blood circuit 110, dialysis circuit 120 and dialyzer 130), The system comprises a disinfection unit (double pump 135 and control circuit 10) that flows a disinfectant solution through the flow path of the blood purification unit to disinfect the flow path, a heating unit (heater 125) that heats the disinfectant solution, and a control unit (control circuit 10) that controls the disinfection process of the disinfection unit and the heating process of the heating unit together with the blood purification process of the blood purification unit. The heating unit generates heat when powered by a commercial power source, and also generates heat when powered by an auxiliary power source (battery 11), thereby heating the disinfectant solution in the blood purification device.

[0043] "2" The blood purification apparatus according to "1", wherein the auxiliary power supply is shared by the blood purification unit and the heating unit.

[0044] "3" The blood purification apparatus according to "1" or "2", wherein the heating section comprises a first heater section (heater 125) that generates heat when power is supplied from a commercial power source and a second heater section (heater 41) that generates heat when power is supplied from the auxiliary power source.

[0045] "4" The blood purification apparatus according to "1" or "2", wherein the heating section comprises a shared heater section (heater 125, heater 41) that generates heat when power is supplied from the commercial power supply and the auxiliary power supply.

[0046] "5" The heating section is located at multiple locations in the flow path, the blood purification device according to any one of "1" to "4".

[0047] "6" The downstream side of the heating section in the flow path is provided with a temperature sensor (thermistor 127) for detecting the temperature of the disinfectant solution in the flow path. The blood purification apparatus according to any one of "1" to "5", wherein the control unit controls the heating treatment of the heating unit so that the temperature of the disinfectant solution in the flow path is maintained at or above a preset desired temperature and for a period of time or longer, based on the detection information of the temperature sensor.

[0048] "7" The blood purification apparatus according to "6", wherein the control unit supplies power to the heating unit according to the temperature of the disinfectant solution in the flow path based on the detection information of the temperature sensor.

[0049] "8" The auxiliary power source is a battery 11, and the system is equipped with a detection unit (control circuit 10) that detects the remaining amount of stored energy in the battery, The blood purification apparatus according to any one of "1" to "7", wherein the control unit performs control processing of at least one of heating stop and status notification according to at least one of the remaining charge and deterioration status of the battery.

[0050] In the case of "1" above, during the disinfection process in the flow path of the blood purification unit, power can be supplied to the heating unit from an auxiliary power source in addition to the commercial power source to heat the disinfectant solution, allowing for easy heating and rapid completion of the disinfection process.

[0051] In the case of "2" above, the auxiliary power supply for the blood purification unit can be shared with the heating unit to enable rapid and inexpensive disinfection.

[0052] In cases "3" to "5" above, the flow path of the blood purification unit can be appropriately heated to effectively perform disinfection.

[0053] In cases "6" and "7" above, the temperature within the flow path of the blood purification unit can be accurately measured, allowing for efficient disinfection.

[0054] In the case of "8" above, the system can take appropriate action, such as stopping the heating process or issuing a status alert, depending on the remaining charge and deterioration of the battery.

[0055] The scope of the present invention is not limited to the illustrative and described exemplary embodiments, but also includes all embodiments that produce effects equivalent to those aimed at by the present invention. Furthermore, the scope of the present invention is not limited to the combination of features defined by each claim, but can be defined by any desired combination of specific features from all disclosed features. [Explanation of Symbols]

[0056] 10... Control circuit 11... Battery 21, 31, 41, 125... Heater 100... Blood purification device 105... Control Panel 110……Blood circuit 111... Blood withdrawal line 113... Blood return line 115... Blood pump 120……Dialysis circuit 121... Introduction line 121c, 131c... Connectors 123... Filtration filter 127...Thermistor 130... Dialyzer 131... Discharge line 132... Water removal pump 133... Detour Line 135... Double-acting pump 137, 139... Bypass lines CPS... Commercial power supply

Claims

1. A blood purification device equipped with a blood purification unit, The system comprises a disinfection unit that flows a disinfectant solution through the flow path of the blood purification unit to disinfect the flow path, a heating unit that heats the disinfectant solution, and a control unit that controls the blood purification process of the blood purification unit, as well as the disinfection process of the disinfection unit and the heating process of the heating unit. The blood purification unit maintains a single flow path for the blood purification process, from the introduction to the discharge of blood in the flow path, and also circulates the disinfectant solution from upstream to downstream in the flow path for the disinfection process to disinfect the flow path. The heating unit is configured to generate heat by being powered by a commercial power supply, as well as by being powered by a rechargeable battery as an auxiliary power source, thereby heating the disinfectant solution. The control unit supplies power to the heating unit from the commercial power supply and the auxiliary power supply to raise the disinfectant solution to a predetermined temperature, and then supplies power to the heating unit from the commercial power supply only to maintain the disinfectant solution at the predetermined temperature for a desired period while simultaneously charging the auxiliary power supply. The blood purification apparatus is characterized in that the heating unit comprises a first heating unit installed upstream of the flow path of the blood purification unit and a second heating unit installed downstream of the flow path of the blood purification unit, wherein the first heating unit is powered by the commercial power supply and the second heating unit is powered by the auxiliary power supply.

2. The blood purification apparatus according to claim 1, wherein the auxiliary power supply is shared between the blood purification unit and the heating unit.

3. The blood purification apparatus according to claim 1 or claim 2, wherein the heating section comprises a first heater section that generates heat when power is supplied from a commercial power source and a second heater section that generates heat when power is supplied from an auxiliary power source.

4. The blood purification apparatus according to claim 1 or claim 2, wherein the heating unit comprises a shared heater unit that generates heat when power is supplied from a commercial power source and power from the auxiliary power source.

5. The blood purification apparatus according to any one of claims 1 to 4, wherein the heating units are arranged at multiple locations in the flow path.

6. A temperature sensor for detecting the temperature of the disinfectant solution in the flow path is provided downstream of the heating section in the flow path. The blood purification apparatus according to any one of claims 1 to 5, wherein the control unit controls the heating process of the heating unit so that the temperature of the disinfectant solution in the flow path is maintained at or above a preset desired temperature and for a period of time based on the detection information of the temperature sensor.

7. The blood purification apparatus according to claim 6, wherein the control unit supplies power to the heating unit according to the temperature of the disinfectant solution in the flow path based on the detection information of the temperature sensor.

8. The aforementioned auxiliary power source is a battery, and the system is equipped with a detection unit that detects the remaining amount of stored energy in the battery. The blood purification apparatus according to any one of claims 1 to 7, wherein the control unit performs control processing of at least one of heating stop and status notification according to at least one of the remaining charge and deterioration status of the battery.

9. The system includes a cleaning unit that flushes room temperature water through the flow path of the disinfectant solution to clean the disinfectant solution. The blood purification apparatus according to any one of claims 1 to 8, wherein the control unit is configured to also control the cleaning process of the cleaning unit, and the cleaning process is performed before and after the disinfection process of the disinfection unit, or both.

Images