JP2010187721A - Apparatus for feeding artificial dialytic water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for feeding artificial dialytic water preventing growth of bacteria when artificial dialytic water is circulated and fed, being easily disinfected and cleaned, and stably feeding a necessary quantity of collected water even if the quantity of collected water varies. <P>SOLUTION: The artificial dialytic water feeding apparatus includes: an RO processing device 10; a water feed pipe 21 for feeding RO water; a collection pipe 22 for sending the RO water fed from the water feed pipe 21 to the RO processing device 10; and RO water extraction pipes 31, 32 and 33 whose both ends are connected to the water feed pipe 21 and the collection pipe 22. The inner diameter of the extraction pipe 31, 32 or 33 is set smaller than the inner diameter of the water feed pipe 21 and the collection pipe 22. Each extraction pipe 31, 32 or 33 has valves at both ends, and an RO water collection port between the two valves. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an artificial dialysis water supply device for stably circulating and supplying artificial dialysis water, and an artificial dialysis fluid supply device using the device.

  Patent Documents 1 to 3 describe an apparatus for circulating and supplying ultrapure water for use as cleaning water in a semiconductor manufacturing process or the like. The technical idea that any of the devices of the invention prevents the generation of bacteria is disclosed.

  However, in any of the inventions, even when different amounts of ultrapure water are sampled at different sampling points, the stable supply so that the required amount can be sampled at each sampling point. It is not described at all.

  Further, in each of the inventions, a long pipe is used in order to install an open / close valve or the like in the water collection line connecting the cleaning devices to the ultrapure water circulation line. For this reason, when the circulation line in the apparatus is sterilized and cleaned, it is considered that the cleaning liquid tends to stay in each water sampling line and sterilization and cleaning becomes difficult, and sufficient sterilization and cleaning cannot be performed.

  In FIG. 1 of Patent Document 1, connection pipes 407 and 408 are provided between the forward pipes 405 and 406 and the return pipe 409, the inner diameter of the connection pipe 407 is 20 mm, and the inner diameter of the connection pipe 408. Is 15 mm. However, as is apparent from FIG. 1, the water sampling point is connected to the connecting pipe 407, and the technical relevance between sampling the pipe diameter and a stable amount is not described.

Japanese Patent No. 2661946 JP-A-1-307487 Japanese Patent Laid-Open No. 10-22250

  The present invention provides an artificial dialysis that can prevent the generation of bacteria, can be easily sterilized and washed, and can stably supply a necessary amount of collected water even if the amount of collected water varies, when circulating water for artificial dialysis. It is an object to provide a water supply device.

  Another object of the present invention is to provide an artificial dialysis fluid supply device using the artificial dialysis water supply device.

As a means for solving the problems, the present invention
RO treatment device for supplying RO water;
A water pipe for supplying RO water from the RO treatment device;
A recovery pipe that recovers the RO water supplied from the water pipe and sends it to the RO treatment apparatus;
One or more ends of the water supply pipes are connected to each other, and two or more RO water discharge pipes are connected to the two or more places of the recovery pipes at the other end.
The inner diameter of the extraction pipe is set to be smaller than the inner diameter of the water supply pipe and the recovery pipe,
The water for artificial dialysis, wherein the extraction pipe has an extraction valve on the one end side, a recovery valve on the other end side, and a RO water sampling port between the extraction valve and the recovery valve Supply device and cleaning method thereof.

  In the present invention, the RO treatment device is an abbreviation of “reverse osmosis membrane treatment device”, and RO water is an abbreviation of “water treated by the reverse osmosis membrane treatment device”, and the RO water becomes water for artificial dialysis.

  In the apparatus for supplying water for artificial dialysis of the present invention, an extraction valve and a recovery valve are provided at both ends of the RO water extraction pipe, and a RO water sampling port is provided in the middle of the extraction pipe, thereby Since the retention of the RO water in is prevented, the generation of bacteria is also suppressed. Furthermore, since the liquid does not easily stay in the apparatus, the sterilization cleaning effect is high when a cleaning method using cleaning water such as a chemical solution or hot water is applied.

  Further, in the artificial dialysis water supply device of the present invention, the inner diameter of the RO water extraction pipe is set to be smaller than the inner diameters of the water supply pipe and the recovery pipe. Even when the amount of water increases or decreases, the required amount can be stably supplied to each extraction pipe.

The present invention also provides a solution to other problems.
An artificial dialysis fluid supply device in which the artificial dialysis water supply device according to any one of claims 1 to 4 is connected to an artificial dialysis device,
Provided is an artificial dialysate supply device in which an artificial dialyzer is connected to a RO water sampling port provided between the take-out valve and the recovery valve.

Furthermore, the present invention provides a solution to other problems.
An artificial dialysis fluid supply device in which the artificial dialysis water supply device according to any one of claims 1 to 4 is connected to an artificial dialysis device,
An artificial dialysis device is connected to the RO water sampling port provided between the extraction valve and the recovery valve,
Furthermore, an artificial dialysis fluid supply device is provided in which an artificial dialysis fluid preparation device is connected to a water supply pipe and a recovery tube, and a plurality of dialysis monitoring devices connected to the artificial dialysis fluid preparation device are provided.

  The artificial dialysis water supply device and the artificial dialysis fluid supply device of the present invention do not retain RO water or dialysis fluid, so that the generation of bacteria is suppressed and sterilization with chemicals or hot water is easy. Yes, it can maintain high safety from a medical point of view.

  Furthermore, the artificial dialysis water supply device and the artificial dialysis fluid supply device of the present invention are different in the case where there are a plurality of artificial dialysis devices to which artificial dialysis water is supplied by the supply device of the present invention. Even in this case, the necessary amount can be stably supplied.

The conceptual diagram which shows one Embodiment of the supply apparatus of the water for artificial dialysis in this invention, and the supply apparatus of artificial dialysis fluid. The conceptual diagram which shows other embodiment of the supply apparatus of the water for artificial dialysis in this invention, and the supply apparatus of artificial dialysis fluid. The conceptual diagram which shows other embodiment of the supply apparatus of the water for artificial dialysis in this invention, and the supply apparatus of artificial dialysis fluid. The elements on larger scale of the supply apparatus of FIG.

(1) Artificial dialysis water supply device shown in FIG. 1 and an artificial dialysis fluid supply device using the same. FIG. 1 shows an embodiment of an artificial dialysis water supply device (artificial dialysis fluid supply device) according to the present invention. Will be explained. FIG. 1 is a conceptual diagram of an artificial dialysis water supply device (artificial dialysate supply device) according to the present invention.

  A water supply pipe 21 for supplying RO water is connected to the liquid outlet of the RO processing apparatus 10, and a recovery pipe 22 for sending the recovered RO water is connected to the liquid return port of the RO processing apparatus 10. It is connected. In FIG. 1, the water supply pipe 21 and the recovery pipe 22 are arranged in parallel. The water supply pipe 21 and the recovery pipe 22 are made of plastic such as polyvinyl chloride, or made of a fluororesin or silicone resin material that can be cleaned with chemicals or hot water, or made of metal such as stainless steel.

  The RO treatment apparatus 10 includes a reverse osmosis membrane module (not shown), a tank 11 for storing RO water treated by the reverse osmosis membrane, and a pump (P in the figure).

  A pressure adjustment valve 45 is attached to the collection pipe 22 in the vicinity of the RO processing apparatus 10. The water supply pipe 21 and the recovery pipe 22 preferably have the same pipe inner diameter.

  One end side opening of the RO water take-out pipes 31, 32, 33 is connected to the three places of the water supply pipe 21, and the other end of the RO water take-out pipes 31, 32, 33 is connected to the three places of the recovery pipe 22 Side openings are connected.

  The extraction pipes 31, 32, and 33 are selected from flexible materials such as plastic and rubber, and metal materials. However, in view of enabling chemical cleaning and hot water cleaning, fluororesin Of these, those made of metal such as stainless steel or stainless steel are preferable. Furthermore, the portion connected to the water supply pipe 21 and the recovery pipe 22 may have a metal connection means. The take-out pipes 31, 32, 33 are detachably attached to the water supply pipe 21 and the collection pipe 22 by means such as screws or press-fitting (a sealing material may be used if necessary). preferable. Moreover, it may be detachably attached via an adapter.

  A take-out valve 41a is provided on the water feed pipe 21 side of the take-out pipe 31, and opening and closing of the take-out valve 41a can control the flow of liquid from the water feed pipe 21 to the take-out pipe 31.

  A collection valve 41b is provided on the collection pipe 22 side of the extraction pipe 31. By opening and closing the collection valve 41b, the flow of liquid from the extraction pipe 31 to the collection pipe 22 can be controlled.

  Similarly to the extraction pipe 31, the extraction pipe 32 is provided with an extraction valve 42 a and a recovery valve 42 b, and the extraction pipe 33 is provided with an extraction valve 43 a and a recovery valve 43 b as with the extraction pipe 31. Yes.

  The inner diameters of the extraction pipes 31, 32, 33 may be the same or different, but the inner diameters of the extraction pipes 31, 32, 33 are smaller than the inner diameters of the water supply pipe 21 and the recovery pipe 22. Is set to The ratio between the inner diameter of the extraction pipes 31, 32, and 33 and the inner diameter of the water supply pipe 21 and the recovery pipe 22 (the inner diameter of the water supply pipe 21 = the inner diameter of the recovery pipe 22) is not limited, but the subject of the present invention. From the viewpoint of solving, it is preferable that the inner diameters of the extraction pipes 31, 32, and 33 (the maximum diameter when the inner diameters are different) are at least 3 to 10% smaller than the inner diameters of the water supply pipe 21 and the recovery pipe 22.

  In the middle of the extraction pipes 31, 32, 33 (for example, the intermediate position is not limited thereto), water sampling ports 31a, 32a, 33a each using a metal trifurcated pipe are provided.

  The length of the portion forming the water sampling ports 31a, 32a, 33a is the length (L) of the portion shown in FIG. 4, and this length (L) is sufficient if it is less than 10 cm, preferably 1-5 cm. Length. Valves are not installed at all in the pipes forming these water sampling ports 31a, 32a, 33a.

  In FIG. 1, the water sampling ports 31a, 32a, and 33a are connected to the artificial dialysis apparatuses 11, 12, and 13, respectively. When the artificial dialysis apparatuses 11, 12, and 13 are installed, the inflow of RO water from the water sampling ports 31a, 32a, and 33a can be controlled by a valve provided in the apparatus. In addition, the artificial dialysate 11, 12, 13 may have the same or different artificial dialysate supply capacity. For example, the artificial dialyzer 11 dialyzes 10 patients, 12 may be used to dialyze five patients and the artificial dialyzer 13 may be used to dialyze one patient.

  The size of the inner diameter of the extraction pipes 31, 32, 33 should be adjusted as appropriate according to the amount of RO water collected from the water sampling ports 31a, 32a, 33a (the amount of RO water supplied to the artificial dialysis machines 11-13). Can do.

  If the RO water sampling amount is the relationship of the sampling port 31a> the sampling port 32a> the sampling port 33a, the relationship of the inner diameter of the extraction pipe 31> the inner diameter of the extraction pipe 32> the inner diameter of the extraction pipe 33 is set. Further, if the amount of RO water collected is the same, the relationship of the inner diameter of the extraction pipe 31 = the inner diameter of the extraction pipe 32 = the inner diameter of the extraction pipe 33 is established. In addition, the relationship of the inner diameter of the extraction pipe 31 = the inner diameter of the extraction pipe 32> the inner diameter of the extraction pipe 33 can be appropriately set according to the amount of RO water collected.

  When the extraction pipes 31, 32, and 33 are detachably connected to the water supply pipe 21 and the recovery pipe 22 via an adapter, the extraction pipes having different inner diameters according to the increase or decrease in the amount of RO water collected It is preferable because it can be exchanged.

  Next, the operation (operation method) of the artificial dialysis water supply device shown in FIG. 1 will be described.

  The RO water produced by the RO treatment device 10 is temporarily stored in the tank 11, from which the pump is operated and flows into the water supply pipe 21.

  If all of the dialysis machines 11, 12, and 13 are in use, the extraction valves 41a, 42a, and 43a and the recovery valves 41b, 42b, and 43b of the extraction pipes 31, 32, and 33 are opened. If so, the extraction valve and the recovery valve of the extraction pipe may be closed or open.

  The RO water supplied from the water supply pipe 21 flows into the extraction pipes 31, 32, 33 by opening the extraction valves 41a, 42a, 43a and the recovery valves 41b, 42b, 43b, and from the water sampling ports 31a, 32a, 33a. The required amount in the artificial dialysis machines 11, 12, 13 is collected. In addition, the artificial dialysate supplied to a patient is prepared in each artificial dialyzer 11, 12, and 13.

  At this time, since the inner diameters of the extraction pipes 31, 32, 33 are set smaller than the inner diameters of the water supply pipe 21 and the recovery pipe 22, the pressure between the water supply pipe 21 and the extraction pipes 31, 32, 33 is set. There is a difference. For this reason, even when the amount of RO water used in the artificial dialysis apparatuses 11, 12, and 13 is different (when the amount of water collected from the sampling ports 31a, 32a, and 33a is different), the required amount of RO water is supplied to each apparatus. It can be supplied stably. In addition, the pressure which flows RO water of the whole apparatus at the time of operation is adjusted by the pressure adjustment valve 45.

  The RO water that has not been sampled enters the recovery pipe 22 through the extraction pipes 31, 32, and 33, is sent to the water storage tank 15, and is circulated and reused. In order to circulate and reuse RO water, an ultrafiltration membrane device may be provided in the middle of the recovery pipe 22 that returns from the recovery pipe 22 to the water storage tank 15 in order to remove fine particles and the like.

  In the apparatus of the present invention, RO water is circulated as artificial dialysis water in this way, but in the apparatus of the present invention, the length of the tubes forming the water sampling ports 31a, 32a, 33a is very short. Even if the use is continued for a long time, there is no portion where the RO water stays, and the generation of bacteria is suppressed.

  Since the device of the present invention supplies artificial dialysis water, it is desirable to sterilize the inside of the device after use or before use in order to maintain safety from a medical point of view. As a sterilization cleaning method in the apparatus, a chemical solution (for example, low concentration sodium hypochlorite aqueous solution, peracetic acid aqueous solution, etc.) is put in the tank 11 and circulated. A method of generating water and circulating it, or a method of combining the two methods can be applied.

  Next, a sterilization cleaning method using a chemical solution in the supply apparatus shown in FIG. 1 will be described. For example, when adding a chemical | medical solution (sodium hypochlorite aqueous solution) in the water storage tank 11, the range of 1-1000 ppm is preferable and the sodium hypochlorite density | concentration in the water storage tank 11 has more preferable 30-500 ppm. A chemical tank provided separately from the water storage tank 11 may be used, and in that case, it may be diluted with tap water or the like instead of the RO water. Further, when using a chemical solution, the chemical solution may be directly injected into the water supply pipe 21 or the recovery pipe 22 without using a tank.

  Next, the pump is operated with all the valves opened, and a circulation operation is performed in the circulation lines of the water storage tank 11, the water supply pipe 21, the extraction pipes 31 to 33, the recovery pipe 22, and the water storage tank 11. In addition, the artificial dialysis apparatuses 11 to 13 control the inflow of the chemical solution with a valve provided in each apparatus.

  By performing the circulation operation with this chemical solution for about 5 to 90 minutes, a sufficient degree of sterilization and washing can be performed from a medical point of view. After the sterilization cleaning, the chemical solution in the water storage tank 11 is replaced with RO water, and this time, the RO water is circulated to wash and remove the chemical solution remaining in the supply device.

  In the apparatus of the present invention, even when circulating and cleaning with a chemical solution or hot water, since there is no portion where the cleaning water stays, it can be sterilized and cleaned at a higher level than the inventions of Patent Documents 1 to 3 described above. Thus, the safety of the device itself from a medical point of view can be improved.

(2) Artificial dialysis water supply device shown in FIG. 2 and an artificial dialysis fluid supply device using the same, FIG. 2 shows another embodiment of the artificial dialysis water supply device (artificial dialysis fluid supply device) of the present invention. Will be explained. FIG. 2 is a conceptual diagram of an artificial dialysis water supply device (artificial dialysate supply device) according to the present invention.

  A water supply pipe 121 for supplying RO water is connected to the liquid outlet of the RO processing apparatus 110, and a recovery pipe 122 for recovering RO water is connected to the liquid return port of the RO processing apparatus 110. ing. In FIG. 2, the water supply pipe 121 is arranged on the outer side, and the recovery pipe 122 is arranged on the inner side. The water supply pipe 121 and the recovery pipe 122 are made of plastic such as polyvinyl chloride, made of a fluororesin or silicone resin material that can be cleaned with chemicals or hot water, or made of metal such as stainless steel.

  A pressure adjustment valve 145 is attached to the collection pipe 122 in the vicinity of the RO processing apparatus 110. It is preferable that the water pipe 121 and the recovery pipe 122 have the same pipe inner diameter.

  One end side opening of the RO water extraction pipes 131, 132, 133, 134 is connected to the four places of the water supply pipe 121, and the RO water extraction pipes 131, 132, 133, The other end side opening part of 134 is connected.

  The take-out pipes 131, 132, 133 are selected from flexible materials such as plastic and rubber, and metal materials. However, in view of enabling chemical cleaning and hot water cleaning, fluororesin Of these, those made of metal such as stainless steel or stainless steel are preferable. Furthermore, the part connected to the water supply pipe 121 and the collection pipe 122 may have a metal connection means. It is preferable that the extraction pipes 131 to 134 are detachably attached to the water supply pipe 121 and the recovery pipe 122 by means such as screws or press-fitting (a sealing material may be used if necessary). Moreover, it may be detachably attached via an adapter.

  An extraction valve 141a is provided on the water supply pipe 121 side of the extraction pipe 131, and the RO water can be controlled to enter and exit from the water supply pipe 121 to the extraction pipe 131 by opening and closing the extraction valve 141a.

  A recovery valve 141b is provided on the recovery pipe 122 side of the extraction pipe 131, and the RO water can be controlled to enter and exit from the extraction pipe 131 to the recovery pipe 122 by opening and closing the recovery valve 141b.

  Similarly to the extraction pipe 131, the extraction pipe 132 is provided with an extraction valve 142a and a recovery valve 142b, and the extraction pipe 133 is also provided with an extraction valve 143a and a recovery valve 143b, similar to the extraction pipe 131. Similarly to the extraction pipe 131, the extraction pipe 134 is provided with an extraction valve 144a and a recovery valve 144b.

  The inner diameters of the RO water extraction pipes 131 to 134 may be the same or different, but the inner diameters of the extraction pipes 131 to 134 are smaller than the inner diameters of the water supply pipe 121 and the recovery pipe 122. Is set.

  In the middle of the extraction pipes 131 to 134 (for example, the intermediate position is not limited to this), RO water sampling ports 131a, 132a, 133a, and 134a each made of a metal trifurcated pipe are provided. Yes. The length of the part forming the water sampling ports 131a to 134a is less than 10 cm, and is preferably 1 to 5 cm. Valves are not installed at all in the pipes forming these water sampling ports 131a to 134a.

  In FIG. 2, the water sampling ports 131a to 134a are connected to the artificial dialysis apparatuses 111, 112, 113, and 114, respectively. When the artificial dialysis apparatuses 111 to 114 are installed, the inflow of RO water from the water sampling ports 131a to 134a is controlled by a valve provided in the apparatus. The supply capacity of the artificial dialysis apparatuses 111 to 114 may be the same or different. For example, 10 patients are dialyzed by the artificial dialysis apparatus 111, and 5 patients are supplied by the artificial dialysis apparatus 112. Alternatively, dialysis may be performed on one patient using the artificial dialysis apparatuses 113 and 114.

  The inner diameters of the extraction tubes 131 to 134 can be appropriately adjusted according to the amount of RO water collected from the water collection ports 131a to 134a (the amount of RO water supplied to the artificial dialysis apparatuses 111 to 114).

  If the RO water sampling amount is the relationship of the sampling port 131a> the sampling port 132a> the sampling port 133a> the sampling port 134a, the inner diameter of the extraction pipe 131> the inner diameter of the extraction pipe 132> the inner diameter of the extraction pipe 133> the inner diameter of the extraction pipe 134 Make a relationship. Further, if the amount of collected water is the same, the relationship of the inner diameter of the extraction pipe 131 = the inner diameter of the extraction pipe 132 = the inner diameter of the extraction pipe 133 = the inner diameter of the extraction pipe 134 is established. In addition, a relationship such as the inner diameter of the extraction pipe 131> the inner diameter of the extraction pipe 132> the inner diameter of the extraction pipe 133 = the inner diameter of the extraction pipe 134 can be appropriately set according to the amount of RO water collected.

  When the extraction pipes 131 to 134 are detachably connected to the water supply pipe 121 and the recovery pipe 122 via an adapter, they should be replaced with liquid extraction pipes having different inner diameters according to the increase or decrease of the extraction amount. Is preferable.

  Next, the operation (operation method) of the artificial dialysis water supply device shown in FIG. 2 will be described. The RO water produced by the RO treatment device 110 is caused to flow through the water supply pipe 121. At this time, if all of the artificial dialysis apparatuses 111 to 114 are in use, the extraction valves 141a to 144a and the recovery valves 141b to 144b of the extraction pipes 131 to 134 are opened. The take-out valve and the recovery valve of the take-out pipe may be closed or opened.

  Since the inner diameters of the extraction pipes 131 to 134 are set to be smaller than the inner diameters of the water supply pipe 121 and the recovery pipe 122, a pressure difference is generated between the water supply pipe 121 and the extraction pipes 131 to 134. For this reason, even if it is a case where the usage-amount of RO water in the artificial dialysis apparatuses 111-114 differs (when the amount of water collection from the water collection ports 131a-134a differs), RO water can be stably supplied to each apparatus. . In addition, the pressure which flows RO water of the whole apparatus at the time of an operation is adjusted with the pressure adjustment valve 145.

  In the apparatus shown in FIG. 2 as well, the effect of suppressing the generation of bacteria and being excellent in sterilization and cleaning properties can be obtained as in the apparatus shown in FIG.

(3) Artificial dialysis water supply device shown in FIG. 3 and an artificial dialysis fluid supply device using the same. FIG. 3 shows another embodiment of the artificial dialysis water supply device (artificial dialysis fluid supply device) of the present invention. Will be explained. FIG. 3 is a conceptual diagram showing a more specific installation state of the artificial dialysis water supply device (artificial dialysate supply device) of the present invention.

  The RO treatment apparatus 10 includes a water storage tank 15, an RO membrane module 16, a raw water tank 17, and a pump (P in the figure). The raw water tank 17 is connected to an external water source (such as tap water).

  In FIG. 3, in addition to the personal dialysis machines 11, 12, and 13, it can be supplied to a multi-person dialysis machine.

  If all of the personal dialysis apparatuses 11, 12, 13 are in use, the extraction valves 41a, 42a, 43a and the recovery valves 41b, 42b, 43b of the extraction pipes 31, 32, 33 are opened. If the part is not used, the take-out valve and the recovery valve of the take-out pipe are closed, but may be opened.

  The RO water supplied from the water supply pipe 21 flows into the extraction pipes 31, 32, 33 by opening the extraction valves 41a, 42a, 43a and the recovery valves 41b, 42b, 43b, and the artificial dialysis apparatuses 11, 12, 13 The required amount of water is collected. In addition, the artificial dialysate supplied to a patient is prepared in each artificial dialyzer 11, 12, and 13.

  The RO water that has not been sampled enters the recovery pipe 22 through the extraction pipes 31, 32, and 33 and is sent to the RO treatment apparatus 10. Then, it is processed again by the RO processing device 10, stored in the tank 15 as RO water, and supplied to the water supply pipe 21 again.

  The RO water sent from the RO treatment device 10 to the water supply pipe 21 can be supplied also to the dialysate supply device main body 60, the A stock solution preparation device 61, and the B stock solution adjustment device 62. The required amount of RO water is collected, and the RO water that has not been collected is flowed to the recovery pipe 22. The inflow of RO water from each sampling port can be controlled by a valve provided in each of the dialysate supply device main body 60, the A stock solution preparation device 61, and the B stock solution adjustment device 62.

  A dialysate supply device main body 60 is connected to an A stock solution preparation device 61 and a B stock solution adjustment device 62. Here, the A stock solution preparation device 61 and the B stock solution adjustment device 62 are devices for supplying the A stock solution and the B stock solution necessary for the artificial dialysate, respectively. The A stock solution and the B stock solution are sent from the A stock solution preparation device 61 and the B stock solution adjustment device 62 to the dialysate supply device main body 60, where an artificial dialysate is prepared.

  The artificial dialysate prepared in the dialysate supply device main body 60 is sent from the artificial dialysate feeding pipe 71 to the dialysis monitoring devices 51, 52, and 53, and is supplied from each monitoring device to a dialysis patient having multiple beds. .

  In the case of the apparatus shown in FIG. 3 as well, the sampling ports 60a, 61a, and 62a in each of the dialysate supply device main body 60, the A stock solution preparation device 61, and the B stock solution adjustment device 62 are the same as in the devices of FIGS. Like the water sampling ports 31a, 32a, 33a, they are made of short tubes (1 to 5 cm). Valves are not installed at all in the pipes forming these water sampling ports 31a, 32a, 33a.

  Also in the apparatus shown in FIG. 3, the same effect as the apparatus of FIG. 1 and FIG. 2 can be obtained.

  Next, a sterilization cleaning method using a chemical solution in the supply apparatus shown in FIG. 3 will be described. For example, when a chemical solution (sodium hypochlorite aqueous solution) is added to the water storage tank 15, the sodium hypochlorite concentration in the water storage tank 15 is preferably in the range of 1 to 1000 ppm, and more preferably in the range of 30 to 500 ppm. A chemical tank provided separately from the water storage tank 15 may be used.

  Next, the pump is operated with all the valves open, and the circulation operation is performed in the circulation lines of the water storage tank 15, the water supply pipe 21, the extraction pipes 31 to 33, the recovery pipe 22, and the water storage tank 15. However, the artificial dialysis apparatuses 11 to 13, the dialysate supply apparatus main body 60, the A stock solution preparation apparatus 61, and the B stock solution adjustment apparatus 62 control the inflow of the chemical solution with a valve provided in each apparatus.

  By performing the circulation operation with this chemical solution for about 5 to 90 minutes, a sufficient degree of sterilization and washing can be performed from a medical point of view. After the sterilization cleaning, the chemical solution in the water storage tank 15 is replaced with the RO water, and this time, the RO water is circulated and washed to remove the chemical solution remaining in the supply device.

  3, the supply line to the dialysis monitoring devices 51, 52, and 53 is also provided with a circulation line by providing a pipe that returns to the water storage tank 15 as in the case of the personal dialysis devices 11, 12, and 13 described above. Thus, chemical cleaning or hot water cleaning similar to the above can be performed. In this case, a chemical tank provided separately from the water storage tank 15 may be used, and in that case, it may be diluted with tap water or the like instead of the RO water. Further, when using a chemical solution, the chemical solution may be directly injected into the water supply pipe 121 or the recovery pipe 122 without using a tank.

Example 1
Artificial dialysis water was supplied using the supply device shown in FIG. The details of the apparatus are as follows. The water supply pipe and the recovery pipe are made of hard polyvinyl chloride, the take-out pipe is a tube made of polyvinyl chloride, and the water sampling port is made of stainless steel.

RO treatment device 10: VCR-SU (Daisen Membrane Systems Co., Ltd.)
Water storage tank 15: capacity 150L
Inner diameter of water pipe 21: 20 mm
Inner diameter of collection tube 22: 20 mm
Inner diameter of extraction pipe 31: 19 mm
Inner diameter of extraction tube 32: 12 mm
Inner diameter of extraction tube 33: 8 mm
Pipe length of sampling port 31a (L in FIG. 4): 30 mm
Pipe length of sampling port 32a (L in FIG. 4): 25 mm
Pipe length of sampling port 33a (L in FIG. 4): 15 mm
Maximum amount of RO water used in the artificial dialysis machine 11: 900 L / h
Maximum amount of RO water used in the artificial dialysis machine 12: 600 L / h
Maximum amount of RO water used in the artificial dialysis machine 12: 100 L / h

  The RO water (water for artificial dialysis) was circulated and supplied at the flow rate shown in Table 1 while operating the pump and adjusting the pressure with the pressure adjustment valve 45. The take-out valves 41a, 42a, 43a and the collection valves 41b, 42b, 43b are all opened.

  The measurement positions of the flow rate and pressure shown in Table 1 are the positions where the water supply pipe 21 is close to the RO treatment apparatus 10, the apparatuses 11, 12, and 13 are sampling ports 31a, 32a, and 33a, and the recovery pipe 22 is The position is close to the pressure adjustment valve 45.

装置１１、１２で採水した場合（装置11/12）、装置１１、１３で採水した場合（装置11/13）、装置１２、１３で採水した場合（装置12/13）は、取出管３１、３２、３３の内径が異なり、採水量が異なるにも拘わらず、同じ圧力にて、必要量を採水することができた。

When water is collected with the devices 11 and 12 (device 11/12), when water is collected with the devices 11 and 13 (device 11/13), when water is collected with the devices 12 and 13 (device 12/13) Although the inner diameters of the tubes 31, 32, and 33 were different and the amount of water collected was different, the required amount could be sampled at the same pressure.

  Furthermore, the same result was obtained when water was collected simultaneously with the apparatus 11, 12, 13 (apparatus 11/12/13).

  Further, in FIG. 1, when the positions of the artificial dialysis apparatus 11, the extraction pipe 31, the artificial dialysis apparatus 13, and the extraction pipe 33 are switched (that is, the combination of the extraction pipe 33 and the apparatus 13 in order from the left side in FIG. The combination of the extraction pipe 32 and the apparatus 12, the combination of the extraction pipe 31 and the apparatus 11, and the combination of the extraction pipe 33 and the apparatus 13 are closest to the RO processing apparatus 10). The same result as 1 was obtained.

DESCRIPTION OF SYMBOLS 10 RO processing apparatus 11, 12, 13 Artificial dialysis apparatus 21 Water supply pipe 22 Recovery pipe 31, 32, 33 RO water extraction pipe 31a, 32a, 33a RO water sampling port 41a, 42a, 43a RO water extraction valve 41b, 42b, 43b RO water recovery valve 45 Pressure adjustment valve

Claims (7)

RO treatment device for supplying RO water;
A water pipe for supplying RO water from the RO treatment device;
A recovery pipe that recovers the RO water supplied from the water pipe and sends it to the RO treatment apparatus;
One or more ends of the water supply pipes are connected to each other, and two or more RO water discharge pipes are connected to the two or more places of the recovery pipes at the other end.
The inner diameter of the extraction pipe is set to be smaller than the inner diameter of the water supply pipe and the recovery pipe,
Artificial dialysis water, wherein the extraction pipe has an extraction valve on the one end side, a recovery valve on the other end side, and a RO water sampling port between the extraction valve and the recovery valve Feeding device.   The water for artificial dialysis according to claim 1, wherein the water sampling port is composed of a short tube connected to the extraction tube, and the length of the short tube forming the water sampling port is less than 10 cm. apparatus.   The apparatus for supplying water for artificial dialysis according to claim 1 or 2, wherein the two or more RO water extraction pipes have the same or different inner diameters.   The two or more RO water extraction pipes are combined with the same inner diameter when the extraction amount from the sampling port is the same, and are combined with different inner diameters when the extraction amount from the sampling port is different. The apparatus for supplying water for artificial dialysis according to any one of claims 1 to 3. It is a washing | cleaning method of the water supply apparatus for artificial dialysis of any one of Claims 1-4,
A step of adding a chemical solution to cleaning water comprising RO water produced by an RO treatment apparatus or water supplied from an external water source;
Or the stage which heats the washing water which consists of the RO water manufactured by RO processing equipment or the water supplied from the external water source,
Next, a step of circulating the cleaning water containing the chemical solution or the heated cleaning water in the order of a water supply pipe, a discharge pipe, a pipe forming a water sampling port, and a recovery pipe,
A method for cleaning an artificial dialysis water supply device comprising: An artificial dialysis fluid supply device in which the artificial dialysis water supply device according to any one of claims 1 to 4 is connected to an artificial dialysis device,
An artificial dialysis fluid supply apparatus, wherein an artificial dialysis apparatus is connected to a RO water sampling port provided between the extraction valve and the recovery valve. An artificial dialysis fluid supply device in which the artificial dialysis water supply device according to any one of claims 1 to 4 is connected to an artificial dialysis device,
An artificial dialysis device is connected to the RO water sampling port provided between the extraction valve and the recovery valve,
An artificial dialysis fluid supply device, further comprising an artificial dialysis fluid preparation device connected to a water supply pipe and a recovery tube, and comprising a plurality of dialysis monitoring devices connected to the artificial dialysis fluid preparation device.

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