Chemical Liquid Supply Device

Abstract

To provide a medical solution supply device that reduces a load of the filling work of a medical solution, facilitates management of a remaining amount, eliminates a risk of medical solution mixture, and safe and hygienic.SOLUTION: A medical solution supply device has: a pair of bag-in boxes comprising a case for encasing an inner bag with a medicinal solution pouring port; a medical solution rack capable of loading the pair of bag-in boxes, while providing a height difference; a lid member being fitted in the medical solution pouring port, and fixed with nuts; a suction line for bringing the inner bags of the pair of bag-in boxes into communication with each other through the lid member; and an inlet line branched from the suction line, and connected to the intake side of a medical solution supply pump.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a drug solution supplying device that can be used safely and hygienically. [Background technology]

[0002] "Bag-in-box" is the mainstream container for liquids of about 5 to 20 liters that can be transported by hand. Bag-in-box is a composite container in which an inner bag made of soft synthetic resin with a pouring outlet is stored in an outer box made of cardboard. By filling the inner bag with liquid, it is light, durable, and easy to handle, and prevents the filled liquid from changing or spoiling due to contact with the outside air. It also has the advantages of reducing the costs of storage, transportation, and disposal. In addition, the outer box can be freely printed. For these reasons, it has been adopted in a variety of applications and fields, replacing 18-liter cans, glass bottles, plastic bottles, etc.

[0003] When removing the liquid filled in the bag-in-box, a part of the outer box is cut along a perforation or the like on the outer box, the spout is pulled out to the outside of the outer box, the cap of the spout is removed, a cock for the bag-in-box is attached, the bag-in-box is tilted or placed on a table on its side, the cock is opened, and the liquid is transferred to another container for use.

[0004] For example, in dialysis facilities where blood purification treatments are performed, the cleaning chemicals used to clean and disinfect the piping and tubes of the equipment within the artificial dialysis system are often packed in bag-in-boxes.

[0005] Protein components and urea toxins dialyzed from the patient's blood adhere to the piping and tubes of the equipment in the artificial dialysis system every time a treatment is performed. If these adhesions are not sufficiently removed, the next patient who uses the same dialysis equipment may suffer from severe symptoms such as fever, anaphylactic shock, and infection. In dialysis facilities, the same equipment is generally used multiple times a day for different patients in the morning, afternoon, and night. However, between the end of one patient's treatment and the start of the next patient's treatment, and after all treatments for the day are completed, the piping and tubes of the equipment in the system are cleaned and disinfected with RO water and chemicals such as sodium hypochlorite. In addition, although not after each treatment, precipitates such as calcium carbonate derived from the dialysis fluid are periodically removed using RO water and chemicals such as acetic acid.

[0006] Although these cleaning and disinfection operations are performed automatically according to a preset schedule and process, medical staff must check the remaining amount of chemicals and replenish them. Chemicals are replenished by transferring the chemicals from the bag-in-box to a stationary tank or container connected to the equipment through piping, but the bag-in-box is by no means lightweight, and it must be supported until the entire amount of chemicals has been transferred, which is a physically demanding task for medical staff.

[0007] Furthermore, when using multiple types of chemicals, if the chemicals are refilled in the wrong place, the chemicals may react with each other and produce toxic gases, so great care must be taken.

[0008] In addition, there are safety and hygiene issues involved in the process, such as spillage of the liquid, splashing onto the human body, contamination by airborne bacteria, and the pungent odor of the liquid.Furthermore, it is necessary to constantly manage the remaining amount of liquid so that it does not run out during cleaning or disinfection.In terms of quality, the composition becomes unstable if the liquid comes into contact with air when transferred from the bag-in-box to a stationary tank, or if the tank is exposed to light.

[0009] Patent Document 1 discloses a bag-in-box storage device that is expected to reduce these tasks and does not require the transfer of liquid from the bag-in-box to another container. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] JP 2004-352301 A Summary of the Invention [Problem to be solved by the invention]

[0011] However, although the storage device of Patent Document 1 has the advantage of eliminating the need to transfer contents to other containers, after the bag-in-box tap is attached with the bag-in-box's spout facing up, the device must be laid on its side and then lifted up, which does not significantly reduce the physical strain, and there remains a risk of liquid leakage due to the device being laid on its side.

[0012] If users check the remaining amount in each bag-in-box before using it, as in the case of a water server, strict management of the remaining amount does not need to be done. However, in the case of the cleaning solution for the artificial dialysis system mentioned above, a lack of remaining amount that would cause the cleaning and disinfection process to be interrupted is not acceptable.

[0013] Also, if multiple bag-in-boxes are stored, it is preferable to use up the first one stored in order to maintain quality.

[0014] To provide a safe and hygienic chemical liquid supplying device which reduces the burden of refilling chemical liquids, facilitates management of the remaining amount, and eliminates the risk of mixing chemical liquids. [Means for solving the problem]

[0015] The chemical solution supplying device of the present invention comprises a pair of bag-in-boxes consisting of an outer box that houses an inner bag with a chemical solution outlet, a chemical solution rack on which the pair of bag-in-boxes can be mounted with a height difference, a cover member that fits into the chemical solution outlet and is fixed with a nut, a suction line that connects the inner bags of the pair of bag-in-boxes through the cover member, and a suction line that branches off from the suction line and is connected to the suction side of a chemical solution supply pump.

[0016] According to the chemical liquid supplying device of the present invention, since the chemical liquid can be replenished by replacing the bag-in-box, the trouble of refilling the tank with the chemical liquid is eliminated, and human error such as refilling the tank with the wrong chemical liquid can be eliminated, making it possible to provide a chemical liquid supplying device that can be used safely and hygienically. In addition, in order to facilitate the work of replacing the bag-in-box, the chemical liquid supplying device may be configured to be movable by providing casters on the legs of the chemical liquid rack.

[0017] In the drug solution supply device of the present invention, it is preferable that the drug solution rack is configured so that the pair of bag-in-boxes can be mounted while inclining the bottom surface of the bag-in-box. By adopting such a configuration, the area of ​​the lowest bottom when the bag-in-box is placed on the drug solution rack can be reduced, so that the amount of drug solution remaining in the inner bag when the bag-in-box is replaced can be reduced. In addition, if a weight part with a suction port is provided at the tip of the suction line, the tip of the suction line made of a tube or the like is stably positioned near the lowest bottom in the inner bag of the bag-in-box, so that the drug solution in the inner bag can be sucked out without leaving any residue through the suction line.

[0018] In the chemical liquid supplying device of the present invention, it is preferable to provide a notification means for prompting replacement of the bag-in-box based on operation history information of the chemical liquid supply pump. For example, the chemical liquid supplying device can be configured such that when the chemical liquid supply pump is a metering pump and the remaining amount of chemical liquid calculated based on the operation history information of the chemical liquid supply pump falls below a predetermined amount, the notification means notifies the user of the need to replace the bag-in-box by light or sound.

[0019] In the drug solution supply device of the present invention, it is preferable that the inner bag is filled with the drug solution and gas, and the gas is mixed into the drug solution through a hole provided in the suction line. By adopting such a configuration, it is possible to gradually remove the air that is initially in the upper part of the inner bag of the bag-in-box through the suction line during drug solution supply, so that it is possible to prevent problems such as the air remaining inside being sucked out all at once just before the upper bag-in-box becomes empty, preventing the drug solution from being supplied.

[0020] Since the chemical solution supplying device of the present invention can be used safely and hygienically, it is suitably used for supplying a chemical solution for cleaning a dialysis device to a dialysis system.

[0021] The drug solution supplying device of the present invention is preferably configured to have a first bag-in-box made of an outer box containing an inner bag having a first drug solution outlet, a first lid member that can be fitted only to the first drug solution outlet, a second bag-in-box made of an outer box containing an inner bag having a second drug solution outlet, and a second lid member that can be fitted only to the second drug solution outlet. Also, the drug solution supplying device of the present invention is preferably configured to have a first bag-in-box made of an outer box containing an inner bag having a first drug solution outlet, a first weight that can be attached only to the tip of a first suction line that connects the inner bags of the first bag-in-box, a second bag-in-box made of an outer box containing an inner bag having a second drug solution outlet, and a second weight that can be attached only to the tip of a second suction line that connects the inner bags of the second bag-in-box. When a chemical liquid supplying device is composed of multiple series and can supply two or more different types of chemical liquid, it is necessary to correctly connect the multiple types of bag-in-boxes to the multiple types of suction lines when replacing the bag-in-box. However, by configuring each cover member so that it can only fit into a specific chemical liquid outlet, or by configuring each weight portion so that it can only be attached to the tip of a specific suction line, human connection errors can be prevented. Effect of the Invention

[0022] According to the drug solution supplying device of the present invention, replacement of the bag-in-box, which is an outer box that houses an inner bag containing a drug solution, can be performed safely and easily. [Brief description of the drawings]

[0023] [Figure 1] 1A and 1B show an embodiment of a drug solution supplying device of the present invention, in which (A) is a front view and (B) is a right side view. [Diagram 2] 2 is a partial cross-sectional view showing the left side of the drug solution supplying device of FIG. 1. [Diagram 3] 2 is a vertical cross-sectional view showing a state in which a chemical solution outlet is attached to a bag-in-box installed in the chemical solution supplying device of FIG. 1. FIG. [Figure 4] FIG. 11 is a vertical cross-sectional view showing a state in which a chemical solution outlet with an inner lid is attached to a bag-in-box installed in another embodiment of the chemical solution supplying device of the present invention. [Diagram 5] The figure shows inner lids (a)-(b) fitted to liquid chemical outlets (A)-(B), which have openings of different shapes for each liquid chemical, and lid members (C)-(D) having matching fitting portions (c)-(d), where (A)-(C) are longitudinal cross-sectional views, (D) is a front view, and (a)-(d) are plan views. [Figure 6] FIG. 2 shows examples of inner lids (a) to (b) fitted onto drug solution outlets (A) to (B), (A) to (B) being longitudinal cross-sectional views and (a) to (b) being plan views. [Figure 7] 1 shows examples of weight members having different shapes for different chemical solutions, where (A) and (B) are longitudinal cross-sectional views and (a) and (b) are front views. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] FIG. 1 shows an embodiment of a chemical liquid supplying device of the present invention, which is a chemical liquid supplying device 1 equipped with bag-in-boxes for two types of chemical liquid and supplies the chemical liquid to downstream devices.

[0025] Bag-in-box 4A is a bag-in-box containing the same chemical liquid, and bag-in-box 4B contains a different chemical liquid, and the bag-in-boxes containing the same chemical liquid are mounted on chemical liquid rack 2 with a height difference between them.

[0026] After removing the cap from the drug solution outlet of the bag-in-box to open it, insert the suction tube 6a with a weight member 10 attached to the tip into the bag-in-box 4A (4B) as shown in FIG. 2, fit the flange-shaped cover member 13A (13B) onto the drug solution outlet, and then screw in the fixing nut 12 to fix it as shown in FIG. 3.

[0027] As shown in FIG. 1(B), the chemical liquid supplying device 1 is provided with a suction line 7 that branches off from the middle of a suction line 6 that connects bag-in-boxes containing the same chemical liquid to each other and is connected to the suction side of the chemical liquid supplying pump 3.

[0028] When the liquid medicine supply pump 3 starts to send the liquid medicine to the device downstream of the discharge side, the liquid medicine in the bag-in-box 4 placed at a high position gradually decreases. During this time, since no outside air is taken in to the suction line 6, the soft resin inner bag gradually collapses and deforms, and the inert gas and air filled in the inner bag are sucked out.

[0029] After the bag-in-box placed at a higher position is emptied and the suction of the medicinal liquid from the bag-in-box placed at a lower position has begun, the bag-in-box is replaced by a medical staff member.

[0030] The procedure for replacing the bag-in-box 4 is to first carry the new bag-in-box 4 close to the drug solution supplying device 1, open it, loosen the fixing nut 12 of the bag-in-box placed at a high position, pull out the suction tube 6a, and insert it into the drug solution outlet of the new bag-in-box 4. At this time, a check valve can be provided in the suction line 6 to prevent dripping from the suction tube 6a. This check valve is also expected to have the effect of preventing the drug solution in the bag-in-box placed at a high position from flowing back into the bag-in-box placed at a low position during liquid transfer.

[0031] The old, empty bag-in-box 4 is removed from the high position of the chemical liquid rack 2 and discarded, and the bag-in-box 4 in the low position from which the chemical liquid is being sucked out is then placed in a higher position, and the new bag-in-box with the suction tube 6a connected is then placed in the low position of the chemical liquid rack 2, completing the replacement work.

[0032] This type of replacement work can be completed without stopping the supply of the medicinal liquid, and the spread of the pungent odor of the medicinal liquid into the room during the replacement work can be minimized, reducing the physical burden on the medical staff. Therefore, the replacement work can be performed with plenty of time between when the bag-in-box 4 placed at a high position becomes empty and when the bag-in-box 4 placed at a low position becomes empty.

[0033] Furthermore, as shown in Figures 4 to 6, an inner lid 14 having an opening of a different shape for each type of chemical liquid is fitted in advance to the chemical liquid outlet of the bag-in-box 4, and the shapes of the weight member 10 and part of the lid member 13 are adjusted to match the shape of the opening of the inner lid 14 as shown in Figures 5 and 7, thereby preventing erroneous connection of different chemical liquids to the bag-in-box 4 and significantly reducing the risk of toxic gas generation due to mixing of chemical liquids.

[0034] It is also possible to calculate the remaining amount of chemical solution and predict the time to replace the chemical solution from the operation history information of the chemical solution supply pump 3. Therefore, for example, by providing a notification means for encouraging replacement of the bag-in-box 4, it is possible to prevent interruption of the cleaning process due to the chemical solution in the inner bag 5 running out.

[0035] In addition, in order to prevent damage to the inner bag 5 of the bag-in-box 4 during transportation, a small amount of inert gas or air may be filled in the inner bag 5 beforehand. However, if the liquid in the bag-in-box 4 placed at a high position runs out and the inert gas or air escapes all at once just before the inner bag 5 is completely crushed, the liquid transfer will stop during this time. Material Air holes in part of 13 17 By providing this, the gas in the upper part of the inner bag 5 can be gradually reduced while being mixed into the drug solution during supply, thereby eliminating the problem of inert gas, air, etc. escaping all at once and causing the drug solution supply to stop. [Industrial Applicability]

[0036] INDUSTRIAL APPLICABILITY The chemical liquid supplying device according to the present invention can be widely used for supplying chemical liquids for cleaning an artificial dialysis system, etc. [Explanation of symbols]

[0037] 1. Chemical supply device 2 Chemical solution rack 3. Chemical supply pump 4, 4A, 4B Bag in box 5 Inner bag 6. Suction line 6a Suction tube 7. Suction Line 10, 10A, 10B Weight member 12 Fixing nut 13, 13A, 13B, 13C, 13D Cover member 14, 14A, 14B, 14C, 14D Inner lid 15A, 15B, 15C, 15D opening 16 Check valve 17 Air Hole

Claims

1. A pair of bag-in-boxes each including an outer box housing an inner bag having a drug solution outlet; A chemical solution rack on which the pair of bag-in-boxes can be mounted with a height difference; A cover member that is fitted to the drug solution outlet and fixed with a nut; A suction line that communicates between the inner bags of the pair of bag-in-boxes through the lid member; a suction line branching off from the suction line and connected to a suction side of a chemical supply pump; having A drug solution supplying device in which the inner bag is filled with a drug solution and a gas, and the gas mixes with the drug solution through an air hole provided in a part of the lid member and a hole provided in the suction line during drug solution supply.

2. The chemical solution supply device according to claim 1, wherein the chemical solution rack mounts the pair of bag-in-boxes while tilting the bottom surface of the bag-in-box with the chemical solution outlet on the upper side, and the tip of the suction line is positioned near the lowermost bottom of the inner bag of the bag-in-box.

3. The chemical solution supplying device according to claim 1 or 2, wherein a weight portion having a suction port is provided at a tip of the suction line.

4. 4. The chemical liquid supply device according to claim 1, further comprising a notification means for calculating a remaining amount of the chemical liquid based on operation history information of the chemical liquid supply pump and prompting replacement of the bag-in-box.

5. The chemical liquid supplying device according to any one of claims 1 to 4, which supplies a chemical liquid for cleaning a dialysis device to a dialysis system.

6. A first bag-in-box including an outer box that houses an inner bag having a first drug solution outlet, and a first lid member having a shape that can be fitted only to the first inner lid that is fitted to the first drug solution outlet; A second bag-in-box including an outer box that houses an inner bag having a second drug solution outlet, and a second lid member having a shape that can be fitted only to the second inner lid that is fitted to the second drug solution outlet; The drug solution supplying device according to any one of claims 1 to 5, further comprising:

7. A first bag-in-box including an outer box housing an inner bag having a first drug solution outlet, and a first weight portion having a shape that can be attached only to a tip of a first suction line that connects the inner bags of the first bag-in-box, A second bag-in-box including an outer box housing an inner bag having a second drug solution outlet, and a second weight portion having a shape that can be attached only to the tip of a second suction line that connects the inner bags of the second bag-in-box, The drug solution supplying device according to any one of claims 1 to 6, further comprising:

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