CN118384354A - A liquid preparation facilities for hemodialysis - Google Patents
A liquid preparation facilities for hemodialysis Download PDFInfo
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- CN118384354A CN118384354A CN202410498254.4A CN202410498254A CN118384354A CN 118384354 A CN118384354 A CN 118384354A CN 202410498254 A CN202410498254 A CN 202410498254A CN 118384354 A CN118384354 A CN 118384354A
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- level sensor
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- 239000007788 liquid Substances 0.000 title claims abstract description 435
- 238000002360 preparation method Methods 0.000 title claims abstract description 76
- 238000001631 haemodialysis Methods 0.000 title claims abstract description 21
- 230000000322 hemodialysis Effects 0.000 title claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 101
- 239000000843 powder Substances 0.000 claims abstract description 89
- 238000009826 distribution Methods 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 71
- 239000000243 solution Substances 0.000 claims description 52
- 238000010438 heat treatment Methods 0.000 claims description 35
- 239000007921 spray Substances 0.000 claims description 33
- 238000000502 dialysis Methods 0.000 claims description 30
- 239000000645 desinfectant Substances 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000001223 reverse osmosis Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- -1 heating Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 230000000249 desinfective effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 239000008236 heating water Substances 0.000 abstract 1
- 238000011282 treatment Methods 0.000 description 7
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 235000008504 concentrate Nutrition 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 3
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 235000011148 calcium chloride Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 235000011147 magnesium chloride Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 208000001647 Renal Insufficiency Diseases 0.000 description 1
- 108091006629 SLC13A2 Proteins 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000385 dialysis solution Substances 0.000 description 1
- 239000002158 endotoxin Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 201000006370 kidney failure Diseases 0.000 description 1
- 235000014666 liquid concentrate Nutrition 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1654—Dialysates therefor
- A61M1/1656—Apparatus for preparing dialysates
- A61M1/1657—Apparatus for preparing dialysates with centralised supply of dialysate or constituent thereof for more than one dialysis unit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1654—Dialysates therefor
- A61M1/1656—Apparatus for preparing dialysates
- A61M1/166—Heating
- A61M1/1664—Heating with temperature control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1654—Dialysates therefor
- A61M1/1656—Apparatus for preparing dialysates
- A61M1/1666—Apparatus for preparing dialysates by dissolving solids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/75—General characteristics of the apparatus with filters
- A61M2205/7545—General characteristics of the apparatus with filters for solid matter, e.g. microaggregates
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Urology & Nephrology (AREA)
- Anesthesiology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Emergency Medicine (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
The invention discloses a liquid A preparation device for hemodialysis, which comprises a control module, a sensing module, a liquid flow path, a liquid distribution subsystem and a liquid storage subsystem; the liquid storage subsystem is communicated with the liquid distribution subsystem through a liquid flow path; the sensing module is electrically connected with the control module; the sensing module comprises a temperature sensor, a first liquid level sensor, a second liquid level sensor and a third liquid level sensor; firstly heating water to a preset temperature and then preparing liquid so as to ensure that the powder A is completely dissolved; after the preparation of the solution A is finished, part of the liquid is firstly transferred to the liquid storage tank, and along with the use of the powder A, when the liquid level is monitored by the second liquid level sensor, the solution is replenished to the liquid storage tank, and the liquid is filled back and forth, so that the instant preparation and instant use are realized.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to a device for preparing A liquid for hemodialysis.
Background
Hemodialysis is an effective treatment for renal insufficiency. In hemodialysis, blood is sent to a dialysis apparatus together with a dialysate, and in the dialysis apparatus, waste and surplus water in the blood are removed by a hollow semipermeable membrane module using a polymer membrane such as cellulose and polysulfone, and the dialyzed blood is returned to a patient. As part of performing dialysis treatments, especially hemodialysis treatments, acidic concentrates (a powder) are often used for dialysate preparation. It comprises solutions of various components, which are generally present in varying amounts and/or concentrations. Typical components are NaC1 as the main component and smaller amounts of other electrolytes such as CaCl2 and MgCl2. The specification of the electrolyte concentration is very strict, as a result of which all components of the acidic concentrate have to be completely dissolved before the acidic concentrate is used in the portioning unit or the dosing unit for preparing the dialysis fluid.
In large dialysis treatment centers, where the number of patients is high, a centralized fluid supply system, which is a ring line connected to a central supply unit, is sometimes used. The acidic liquid concentrate is prepared or obtained by means of a dedicated mixing device in this central supply unit and is subsequently supplied into the annular line. It is discharged from the annular line at the dialysis machine or treatment station and is then available to the dialysis machine for preparing ready-to-use dialysate.
Disadvantages of the centralized supply are that the disinfection and cleaning of such systems is laborious, expensive and severely contaminated and that the supply of such concentrates is economical only for large treatment centers due to the relatively high costs and it is difficult to meet the personalized dialysis requirements of the patient. Meanwhile, contamination of the dialysate preparation device and the dialysate supply line is a cause of fever of the patient due to bacterial growth and endotoxin in the tubing.
Currently, in performing hemodialysis treatment, online powder a (concentrated supply) is generally used, which is contained in a bag, a cartridge; when in use, the high-purity water is required to be mixed with the powder A, wherein the powder A is prepared into acid solution A after being mixed. The solution A has very strict requirements on the electrolyte concentration, and the powder A can be used in dialysis instruments after being completely dissolved under the quantitative condition.
Disclosure of Invention
The invention aims to provide a liquid A preparation device for hemodialysis, which consumes less water, has smaller size, can accurately prepare solution concentration and realizes instant preparation and instant use.
The invention aims at realizing the following technical scheme:
A liquid A preparation device for hemodialysis comprises a control module, a sensing module, a liquid flow path, a liquid preparation subsystem and a liquid storage subsystem; the liquid storage subsystem is communicated with the liquid distribution subsystem through a liquid flow path; the sensing module is electrically connected with the control module;
The sensing module comprises a temperature sensor, a first liquid level sensor, a second liquid level sensor and a third liquid level sensor; the temperature sensor is positioned in the liquid storage tank, the first liquid level sensor and the second liquid level sensor are positioned in the liquid storage tank, the first liquid level sensor is higher than the second liquid level sensor, and the third liquid level sensor is positioned at the liquid distribution tank; the position of the third liquid level sensor corresponds to the preset liquid level of the maximum liquid containing amount of the liquid prepared by the liquid preparation tank for one time; the position of the first liquid level sensor corresponds to the preset liquid level of the maximum liquid accommodating amount of the liquid tank for single liquid preparation; the position of the second liquid level sensor corresponds to the preset liquid level of the liquid supplementing of the liquid storage tank;
The liquid distribution subsystem comprises a containing box, a liquid distribution groove, an electromagnetic stirrer and a detection module, wherein an opening is formed in the bottom of the containing box and is communicated with the liquid distribution groove; the accommodating box is used for accommodating the A powder in the sealed package; the lower part of the accommodating box is provided with a cutter which is used for cutting the placed powder A bag so that the powder A falls into the liquid distribution groove; the top of the liquid distribution tank is provided with a water inlet, an electromagnetic stirrer is arranged in the liquid distribution tank, and the bottom of the liquid distribution tank is provided with a liquid outlet which is communicated with a liquid flow path; the detection module stretches into the liquid preparation tank and is used for detecting the conductivity of liquid in the liquid preparation tank;
The liquid storage subsystem comprises a liquid storage tank, and a liquid inlet and a liquid suction pipe socket are respectively arranged on the upper part of the liquid storage tank; the bottom of the liquid storage tank is provided with a liquid outlet which is connected with a drain valve through a pipeline. The liquid inlet is used for injecting the prepared liquid A into the liquid storage tank; the liquid suction pipe socket is connected to one end of the liquid suction pipe, and the other end of the liquid suction pipe is connected with the dialysis machine.
The liquid flow path comprises a liquid outlet of the liquid distribution tank, a pump body, a primary filter element, a liquid storage valve and a liquid inlet of the liquid storage tank which are sequentially connected through pipelines; a first branch and a second branch are further arranged between the pump body and the primary filter element, the first branch is connected with the heating valve and the heating module through a pipeline and then communicated with the liquid distribution tank, the second branch is connected with a spray valve and a spray rod through a pipeline, and the end part of the spray rod extends into the accommodating tank;
The control module opens/closes elements, a water inlet valve, a liquid distribution subsystem and a liquid storage subsystem of the liquid flow path according to the values of the temperature sensor, the detection module and the first, second and third liquid level sensors, so as to realize water injection, heating, liquid distribution and liquid monitoring.
Further, the side wall of the upper part of the liquid preparation tank is provided with an overflow port, and the position of the overflow port corresponds to the position of the liquid preparation tank for accommodating 10L; the overflow port is respectively connected with an overflow valve and a third liquid level sensor through pipelines.
Further, the primary filter element is filter cotton for filtering large particle impurities with the particle size of more than 10 microns.
Further, the dialysis liquid A preparation device is suitable for preparing 2-person liquid A, wherein the containing box is used for containing 2-person powder A, and the liquid preparation tank is used for containing 10L of water/solution.
Further, the inflow water of the water inlet valve is RO reverse osmosis water.
Further, a disinfectant inlet is further formed in the top of the liquid preparation tank, and the disinfectant inlet is connected with a disinfectant generating device through a pipeline and used for disinfecting the pipeline of the liquid A preparation device.
The working process of the A liquid/B liquid preparation device for dialysis is as follows:
and (3) water injection stage: opening a water inlet valve, an overflow valve, a pump body, a heating valve of a first branch and a heating module; injecting corresponding amount of water into the liquid storage tank according to the preset liquid amount, and stopping water injection until the injected water reaches the position of the third liquid level sensor;
heating: setting the temperature of the heating module, discharging water in the liquid distribution tank from the liquid outlet, and flowing into the liquid distribution tank for cyclic heating after passing through the pump body and the first branch;
liquid preparation stage: after the temperature sensor in the liquid storage tank monitors that the water temperature in the liquid storage tank reaches the preset temperature, the sealed powder A bag is placed into the powder A accommodating box, the powder A bag passes through the spray rod and then is located at the top of the cutting knife, the cutting knife cuts off the powder A bag, and the powder A can fall into the liquid distribution tank;
Closing the first branch element, opening the pump body, the spray valve and the electromagnetic stirrer, enabling the heated water to sequentially flow through the pump body and the second branch through the pipeline, and spraying the heated water into the powder A bag from bottom to top through a spray port positioned at the upper part of the spray rod, so that the powder/solution in the powder A bag can be ensured to fall into the liquid distribution tank; the electromagnetic stirrer rotates to stir the powder A and the liquid which enter the liquid preparation tank; at the moment, liquid circulates in the flow path, meanwhile, the detection module detects the conductivity of the solution in the flow path and transmits a numerical value to the control module in real time until the conductivity reaches a preset value, a powder A solution meeting the requirements is formed, and the control module closes the electromagnetic stirrer and the spray valve;
Liquid inlet stage: opening a pump body and a liquid storage valve, keeping a drain valve closed, and completing preparation of the solution A; at least part of the prepared powder A solution flows through the primary filter element and the liquid storage valve in sequence from the liquid outlet at the bottom of the liquid preparation tank through the pipeline and then flows into the liquid storage tank through the liquid inlet.
Further, at least part of the prepared powder A solution enters a liquid storage tank, and the first liquid level sensor and the second liquid level sensor transmit the relative liquid level in the liquid storage tank to a control module in real time;
When the first liquid level sensor detects that the liquid level of the powder A solution reaches the first liquid level sensor, the control module closes the liquid storage valve, the primary filter element and the pump body; stopping injecting the powder A solution into the liquid storage tank; the dialysis machine absorbs the powder A solution in the liquid storage tank according to the requirement; along with the dialysis, the powder A solution in the liquid storage tank is reduced, and when the second liquid level sensor monitors that the liquid level of the powder A solution reaches the second liquid level sensor, the control module opens the liquid storage valve, the primary filter element and the pump body; judging whether the pump body runs, if the pump body runs, indicating that the powder A solution still exists in the liquid storage tank, and continuously adding liquid into the liquid storage tank; if the pump body does not operate, the condition that the powder A solution does not exist in the liquid storage tank at the moment is indicated, and the liquid storage valve, the primary filter element and the pump body are closed; and the dialysis machine continuously sucks the powder A solution in the liquid storage tank until no liquid exists.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
The A liquid preparation device for hemodialysis is of an automatic design, can ensure accurate A liquid proportion, is safe and efficient, and reduces the possibility of human misoperation; the pollution risk brought by the mode of dispensing the liquid by using a large cylinder before and then sub-packaging can be avoided, and the purity and quality of the liquid A are ensured;
The device can heat the water to a proper temperature in advance before mixing the water with the powder A, and then mix the water with the powder A, so that a good dissolving effect can be achieved;
The sensing module controls the opening/closing of the plurality of valve bodies to form the device according to small preparation, 2 liquid level sensors are arranged in the liquid storage tank to monitor the liquid amount in the liquid storage tank respectively, so that the sanitation and safety of pipelines and equipment are ensured, the instant use is realized, and the health and safety of patients are ensured.
Drawings
FIG. 1 is a schematic diagram of the liquid A preparing apparatus;
FIG. 2 is a flow chart of the operation of the liquid A preparation apparatus;
FIG. 3 is a flow chart of the liquid level monitoring of the liquid A preparation apparatus.
In the figure:
1: a cylinder cover; 2: a housing box; 3: a spray bar;
4: a cutting knife; 5: a liquid preparing tank; 6: a detection module; 7: an electromagnetic stirrer; 8: a liquid storage valve; 9: a heating module;
10: a heating valve; 11: a spray valve; 12: a primary filter element; 13: a pump body; 14: an overflow port; 15: liquid inlet
16: A drain valve; 17: a liquid outlet; 18: a liquid storage tank; 19: a water inlet valve; 21: an overflow valve;
22: a disinfectant generating device; 23: a pipette socket; 201: a first liquid level sensor;
202: a second liquid level sensor; 203: and a third liquid level sensor.
Detailed Description
In order to make the objects, technical solutions, advantageous effects and significant improvements of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings provided in the examples of the present invention, and it is apparent that all of the described embodiments are only some embodiments of the present invention, not all embodiments; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present application, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; unless specified or indicated otherwise, the terms "coupled," "fixed," and the like are to be construed broadly and are, for example, capable of being coupled either permanently or detachably, or integrally or electrically; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1, a dialysis system for hemodialysis comprises a dialysis machine and a small-sized liquid a preparation device, wherein the dialysis machine is connected with the liquid a preparation device through a liquid suction pipe, and water used by the liquid a preparation device is RO reverse osmosis water from a hospital dialysis center. The liquid A preparation device comprises a control module, a sensing module, a liquid flow path, a liquid distribution subsystem and a liquid storage subsystem.
The sensing module comprises a temperature sensor, a first level sensor 201, a second level sensor 202 and a third level sensor 203. The temperature sensor (not shown) is located in the liquid storage tank, the first liquid level sensor 201 and the second liquid level sensor 202 are located in the liquid storage tank 18, the first liquid level sensor 201 is higher than the second liquid level sensor 202, and the third liquid level sensor 203 is located at the liquid preparation tank 5.
The liquid preparation subsystem comprises a containing box 2, a liquid preparation groove 5, an electromagnetic stirrer 7 and a detection module 6, wherein the containing box 2 is used for containing a sealed powder bag A, a cylinder cover 1 is detachably buckled on the top of the containing box 2, the liquid preparation groove 5 is arranged at the lower part of the containing box 2, the containing box 2 is communicated with the liquid preparation groove 5, and the diameter of an opening communicated with the containing box 2 is 30-40mm. The accommodating box 2 is a hollow cylinder and is used for accommodating bagged A powder, wherein the weight of the A powder is about 2334gA powder (applicable to 2 people), and the A powder comprises a mixture of sodium chloride, potassium chloride, calcium chloride, magnesium chloride and glacial acetic acid. And the bottom of the accommodating box 2 is fixedly provided with a cutter 4, and the cutting edge of the cutter 4 faces the direction of the cylinder cover 1 and is used for cutting the powder A bag placed in the accommodating box 2, so that powder A falls into the liquid distribution groove 5.
The electromagnetic stirrer 7 is positioned at the bottom of the liquid preparation tank 5, and the electromagnetic stirrer 7 is externally connected with a power supply for supplying power and is used for enabling the stirrer to generate rotary motion through electromagnetic force so as to stir liquid and powder A in the liquid preparation tank 5; the electromagnetic stirrer 7 is controlled by a timer integrated in the control module, and the electromagnetic stirrer 7 stops stirring when the conductivity of the solution in the liquid preparation tank 5 reaches a preset value; and the bottom of the liquid distribution tank 5 is provided with a liquid outlet 17 which is connected with a liquid flow path. The detection module 6 stretches into the liquid preparation tank 5 and is used for detecting the conductivity of liquid in the liquid preparation tank, the detection module 6 is electrically connected with the control module, and the detected conductivity is transmitted to the control module in real time.
The top of the liquid preparation tank 5 is provided with a water inlet and a disinfectant inlet, the water inlet is sequentially connected with a water inlet valve 19 and an RO reverse osmosis water pipeline through pipelines, water flowing into the water inlet valve 19 is RO reverse osmosis water, and the disinfectant inlet is connected with a disinfectant generating device 22 through a pipeline; the side wall of the upper part of the liquid preparation tank 5 is provided with an overflow port 14, and the position of the overflow port 14 corresponds to the position of the liquid preparation tank for accommodating 10L; the overflow port 14 is connected with an overflow valve 21 and a third liquid level sensor 203 through pipelines respectively.
The liquid storage subsystem comprises a liquid storage tank 18 for containing 2 parts of liquid A from the liquid preparation subsystem, a first liquid level sensor 201 and a second liquid level sensor 202 are arranged in the liquid storage tank 18, a liquid inlet 15 and a liquid suction pipe socket 23 are respectively arranged on the upper portion of the liquid storage tank 18, a liquid outlet is arranged at the bottom of the liquid storage tank 18, and the liquid outlet is connected with a drain valve 16 through a pipeline. The liquid inlet 15 is used for injecting the prepared liquid A into the liquid storage tank 18. The liquid suction pipe jack 23 is connected to one end of a liquid suction pipe, and the other end of the liquid suction pipe is connected with a dialysis machine.
The liquid flow path comprises a liquid outlet 17 of the liquid distribution tank, a pump body 13, a primary filter element 12, a liquid storage valve 8 and a liquid inlet 15 of the liquid storage tank which are sequentially connected through pipelines. A first branch and a second branch are further arranged between the pump body 13 and the primary filter element 12, the first branch is connected with the heating valve 10 and the heating module 9 through a pipeline and then is connected with the liquid distribution tank 5, the second branch is connected with the spray valve 11 and the spray rod 3 through a pipeline, and the end part of the spray rod 3 stretches into the accommodating box 2 by 5cm (stretches into 5-10 cm). The primary filter element is filter cotton and is used for filtering large-particle impurities with the particle size of more than 10 microns.
The control module opens/closes the elements of the liquid flow path, the water inlet valve 19, the liquid dispensing subsystem and the liquid storage subsystem according to the values of the temperature sensor, the detection module 6 and the values of the first, second and third liquid level sensors, so as to realize water injection, heating, liquid dispensing and liquid monitoring.
As shown in fig. 2, the working process of the small-sized liquid a preparation device is as follows:
and (3) water injection: opening the water inlet valve 19, the overflow valve 21, the pump body 13, the heating valve 10 of the first branch and the heating module 9, and setting the heating temperature of the heating module 9 to be 30 degrees;
Opening a water inlet valve 19 and an overflow valve 21, wherein the water inlet valve 19 is used for filling water into the liquid distribution tank 5, the water flowing into the water inlet valve 19 is RO reverse osmosis water, and 10L of RO reverse osmosis water is filled into the liquid storage tank 18 according to the liquid quantity of two parts A of liquid to be prepared; the third liquid level sensor 203 detects the water amount of the liquid dispensing tank 5, when the injected water reaches the position of the third liquid level sensor 203, the third liquid level sensor 203 transmits the liquid level of the liquid dispensing tank 5 to a control module, if additional water is generated, the water flows out of the overflow valve 21; the control module then controls closing of the inlet valve 19 and the overflow valve 21;
heating: the water in the liquid preparation tank 5 is discharged from the liquid discharge port 17, flows into the liquid preparation tank 5 for circulation heating after passing through the pump body 13, the heating valve 10 and the heating module 9;
Preparing liquid: after the temperature sensor in the liquid storage tank 5 monitors that the water temperature in the liquid storage tank reaches 28-30 degrees, the sealed powder A bag is placed in the containing tank 2, the powder A bag filled with powder A at the moment pierces the spray rod 3 and then is located at the top of the cutting knife 4, the cutting knife 4 cuts off the powder A bag, and the powder A can start to fall into the liquid distribution tank 5 through the containing tank 2; closing a heating valve 10 and a heating module 9 on the first branch, keeping the pump body 13 open, opening a spray valve 11 and an electromagnetic stirrer 7, enabling the heated RO reverse osmosis water to sequentially flow through the pump body 13, the spray valve 11 and the spray rod 3 through pipelines, and spraying the RO reverse osmosis water into an A powder bag through a spray opening positioned at the upper part of the spray rod 3; because the temperature of RO reverse osmosis water sprayed into the powder A bag is 25-30 degrees, the powder A can be better dissolved, so that part of powder A is dissolved in the powder A bag and flows into the liquid preparation tank 5, and the water entering the powder A bag is sprayed into the powder A bag from bottom to top, so that the powder/solution in the powder A bag can be ensured to fall into the liquid preparation tank 5 completely;
The electromagnetic stirrer 7 rotates to stir the powder A and the liquid entering the liquid preparation tank 5; at the moment, liquid circulates in the flow path, meanwhile, the detection module 6 detects the conductivity of the solution in the flow path and transmits a numerical value to the control module in real time until the conductivity reaches a preset value, a powder A solution meeting the requirement is formed, and the control module closes the electromagnetic stirrer 7 and closes the spray valve 11;
Feeding liquid: subsequently, the pump body 13 is kept open, the liquid storage valve 8 on the liquid flow path is opened, and the drain valve 16 is kept closed; the prepared powder A solution sequentially flows through the primary filter element 12 and the liquid storage valve 8 from the liquid outlet 17 at the bottom of the liquid preparation tank 5 through a pipeline, and then flows into the liquid storage tank 18 through the liquid inlet 15, so that the preparation of the solution A is completed.
Monitoring the liquid level: as shown in fig. 3, after the control module displays that the preparation of the liquid a is completed, the first liquid level sensor 201 and the second liquid level sensor 202 simultaneously transmit the relative liquid level in the liquid storage tank 18 to the control module in real time;
One end of a liquid suction pipe is inserted into the liquid suction pipe inserting opening 23, the tail end of the liquid suction pipe extends into the liquid storage tank 18 and approaches the bottom, the other end of the liquid suction pipe is inserted into a dialysis machine, and the dialysis machine sucks the powder A solution in the liquid storage tank 18 according to the requirement; connecting the patient to a dialysis machine, and flowing the patient's blood into and out of the dialysis machine using devices and techniques known to those skilled in the art;
When the first liquid level sensor 201 detects that the liquid level of the powder A solution reaches the first liquid level sensor 201, the control module closes the liquid storage valve 8, the primary filter element 12 and the pump body 13; stopping the injection of the powder A solution into the reservoir 18; the dialysis machine sucks the powder A solution in the liquid storage tank 18 according to the requirement;
As dialysis proceeds, the powder a solution in the reservoir 18 decreases, and when the second level sensor 202 detects that the level of the powder a solution reaches the second level sensor 202, the control module opens the liquid storage valve 8, the first-stage filter element 12 and the pump body 13 to perform liquid filling in a reciprocating manner; if the powder A solution does not exist in the liquid storage tank 5 at the moment, the pump body 13 cannot be started, the control module displays the lack of liquid at the moment, and the liquid storage valve 8, the primary filter element 12 and the pump body 13 are closed; the dialysis machine continues to draw the powder a solution in reservoir 18 until no solution is present.
After the completion of the multiple dialysis, the operator disinfects the small-sized liquid a preparation apparatus, the flow path of which is as follows:
Firstly, opening a water inlet valve 19 and an overflow valve 21, and closing the water inlet valve 19 after the water inlet valve 19 injects 10L of water into the liquid distribution tank 5; the external disinfectant generating device 22 (namely a micro-acid hypochlorous acid generator) prepares micro-acid hypochlorous acid, and enters the liquid preparation tank 5 from the disinfectant liquid inlet, and the mixed micro-acid hypochlorous acid solution sequentially flows through the heating flow path: the pump body 13, the heating valve 10 and the heating module 9 flow into the liquid preparation tank 5; after the circulation is carried out for a preset time, the heating valve 10 on the first branch is closed, the pump body 13 is kept open, the spray valve 11 and the electromagnetic stirrer 7 are opened, and the disinfectant flows through the pump body 13, the spray valve 11 and the spray rod 3 and flows into the liquid preparation tank 5; after the circulation is carried out for a preset time, the electromagnetic stirrer 7 is closed, the spray valve 11 is closed, the pump body 13 is kept open, the liquid storage valve 8 on the liquid flow path is opened by the disinfectant, and the drain valve 16 is kept closed; the disinfectant flows from a liquid outlet 17 at the bottom of the liquid preparation tank 5 through a pump body 13, a primary filter element 12 and a liquid storage valve 8 in sequence and then flows into a liquid storage tank 18 through a liquid inlet 15; after all the water in the liquid storage tank 18 flows out, the pump body 13 and the liquid storage valve 8 are closed, the drain valve 16 is opened, and the liquid in the liquid storage tank 18 is emptied.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail herein, but rather is provided for the purpose of enabling those skilled in the art to make and use the embodiments described herein.
Claims (8)
1. The A liquid preparation device for hemodialysis is characterized by comprising a control module, a sensing module, a liquid flow path, a liquid preparation subsystem and a liquid storage subsystem; the liquid storage subsystem is communicated with the liquid distribution subsystem through a liquid flow path; the sensing module is electrically connected with the control module;
the sensing module comprises a temperature sensor, a first liquid level sensor (201) and a second liquid level sensor (202)
And a third level sensor (203); the temperature sensor is positioned in the liquid storage tank, the first liquid level sensor (201) and the second liquid level sensor (202) are positioned in the liquid storage tank 18, the first liquid level sensor (201) is higher than the second liquid level sensor (202), and the third liquid level sensor (203) is positioned at the liquid distribution tank (5); the position of the third liquid level sensor (203) corresponds to the preset liquid level of the maximum liquid containing amount of the liquid prepared by the liquid preparing tank for one time; the position of the first liquid level sensor (201) corresponds to the preset liquid level of the maximum liquid containing amount of the liquid tank for single liquid preparation; the position of the second liquid level sensor (202) corresponds to the preset liquid level of the liquid supplementing of the liquid storage tank;
the liquid dispensing subsystem comprises a containing box (2), a liquid dispensing groove (5), an electromagnetic stirrer (7) and a detection module (6), wherein an opening is formed in the bottom of the containing box and is communicated with the liquid dispensing groove (5); the accommodating box is used for accommodating the A powder in the sealed package; the lower part of the accommodating box is provided with a cutter which is used for cutting the placed powder A bag so that the powder A falls into the liquid distribution groove; the top of the liquid distribution tank is provided with a water inlet, an electromagnetic stirrer (7) is arranged in the liquid distribution tank (5), and the bottom of the liquid distribution tank (5) is provided with a liquid outlet (17) which is communicated with a liquid flow path; the detection module (6) stretches into the liquid preparation tank and is used for detecting the conductivity of liquid in the liquid preparation tank;
The liquid storage subsystem comprises a liquid storage tank (18), and a liquid inlet (15) and a liquid suction pipe socket (23) are respectively arranged on the upper part of the liquid storage tank; a liquid outlet is formed in the bottom of the liquid storage tank (18), and the liquid outlet is connected with a drain valve (16) through a pipeline; the liquid inlet (15) is used for injecting prepared liquid A into the liquid storage tank (18); the liquid suction pipe socket (23) is connected to one end of a liquid suction pipe, and the other end of the liquid suction pipe is connected with a dialysis machine;
The liquid flow path comprises a liquid outlet (17) of a liquid distribution tank, a pump body (13), a primary filter element (12), a liquid storage valve (8) and a liquid inlet (15) of a liquid storage tank (18) which are sequentially connected through pipelines; a first branch and a second branch are further arranged between the pump body (13) and the primary filter element (12), the first branch is connected with the heating valve 10 and the heating module 9 through a pipeline and then is communicated with the liquid distribution tank (5), the second branch is connected with the spray valve (11) and the spray rod (3) through a pipeline, and the end part of the spray rod (3) stretches into the accommodating tank (2);
The control module opens/closes elements of the liquid flow path, the water inlet valve (19), the liquid distribution subsystem and the liquid storage subsystem according to the values of the temperature sensor, the detection module (6) and the values of the first, second and third liquid level sensors, so as to realize water injection, heating, liquid distribution and liquid monitoring.
2. The device for preparing a liquid for hemodialysis according to claim 1, wherein the upper side wall of the liquid preparation tank (5) is provided with an overflow port (14), and the overflow port (14) is positioned corresponding to the liquid level where the liquid preparation tank (5) accommodates 10L; the overflow port (14) is respectively connected with an overflow valve (21) and a third liquid level sensor (203) through pipelines.
3. The apparatus for preparing a liquid a for hemodialysis according to claim 1, wherein the primary filter element (12) is filter cotton for filtering large-particle impurities having a particle size of more than 10 μm.
4. The apparatus for preparing a liquid a for hemodialysis according to claim 1, wherein the apparatus is adapted to prepare 2 parts of a liquid, wherein a containing tank (2) is adapted to contain 2 parts of a powder, and wherein the liquid dispensing tank (5) is adapted to contain 10L of water/solution.
5. The apparatus for producing a liquid a for hemodialysis according to claim 1, wherein the water flowing into the inlet valve is RO reverse osmosis water.
6. The device for preparing the A liquid for hemodialysis according to claim 1, wherein the top of the liquid preparation tank (5) is further provided with a disinfectant liquid inlet, and the disinfectant liquid inlet is connected with a disinfectant liquid generating device (22) through a pipeline for disinfecting the pipeline of the A liquid preparing device.
7. The apparatus for preparing a liquid a for hemodialysis according to claim 1, wherein the apparatus for preparing a liquid a/B for hemodialysis operates as follows:
and (3) water injection stage: opening a water inlet valve (19), an overflow valve (21), a pump body (13), a heating valve (10) of a first branch and a heating module (9); injecting corresponding amount of water into the liquid storage tank according to the preset liquid amount, and stopping water injection until the injected water reaches the position of the third liquid level sensor (203);
Heating: setting the temperature of the heating module, discharging water in the liquid distribution tank (5) from a liquid outlet (17), and flowing into the liquid distribution tank (5) for cyclic heating after passing through the pump body (13) and the first branch;
Liquid preparation stage: after the temperature sensor in the liquid storage tank (5) monitors that the water temperature in the liquid storage tank reaches the preset temperature, the sealed powder A bag is placed in the accommodating box (2), the powder A bag passes through the spray rod and then is located at the top of the cutting knife (4), the cutting knife (4) cuts off the powder A bag, and powder A can fall into the liquid distribution tank (5);
Closing the first branch element, opening the pump body (13), the spray valve 11 and the electromagnetic stirrer (7), and enabling the heated water to sequentially flow through the pump body (13) and the second branch through pipelines, and spray into the powder A bag from bottom to top through a spray port positioned at the upper part of the spray rod, so that powder/solution in the powder A bag can be ensured to fall into the liquid distribution tank; the electromagnetic stirrer (7) rotates to stir the powder A and the liquid which enter the liquid preparation tank (5); at the moment, liquid circulates in the flow path, meanwhile, the detection module (6) detects the conductivity of the solution and transmits a numerical value to the control module in real time until the conductivity reaches a preset value, a powder A solution meeting the requirement is formed, and the control module closes the electromagnetic stirrer (7) and closes the spray valve (11);
Liquid inlet stage: opening a pump body (13) and a liquid storage valve (8), and keeping a drain valve (16) closed to finish the preparation of the solution A; at least part of the prepared powder A solution flows through the primary filter element (12) and the liquid storage valve (8) in sequence from the liquid outlet (17) at the bottom of the liquid preparation tank (5) and then flows into the liquid storage tank (18) through the liquid inlet (15).
8. The a-liquid preparation device for hemodialysis according to claim 7, wherein at least part of the prepared a-powder solution enters a liquid preparation tank (5), and the first liquid level sensor (201) and the second liquid level sensor (202) transmit the relative liquid level in the liquid storage tank (18) to a control module in real time;
When the first liquid level sensor (201) detects that the liquid level of the powder A solution reaches the first liquid level sensor (201), the control module closes the liquid storage valve (8), the primary filter element (12) and the pump body (13); stopping the injection of the powder A solution into the liquid storage tank (18); the dialysis machine sucks the powder A solution in the liquid storage tank (18) according to the requirement;
As dialysis progresses, the powder A solution in the liquid storage tank (18) is reduced, and when the second liquid level sensor (202) monitors that the liquid level of the powder A solution reaches the second liquid level sensor (202), the control module opens the liquid storage valve (8), the primary filter element (12) and the pump body (13);
Judging whether the pump body (13) operates, if the pump body (13) operates, indicating that the powder A solution still exists in the liquid storage tank (5), and continuously adding liquid into the liquid storage tank (18); if the pump body (13) does not operate, the liquid storage valve (8), the primary filter element (12) and the pump body (13) are closed when the powder A solution does not exist in the liquid storage tank (5); the dialysis machine continues to suck the powder A solution in the liquid storage tank (18) until no liquid exists.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410498254.4A CN118384354A (en) | 2024-04-24 | 2024-04-24 | A liquid preparation facilities for hemodialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410498254.4A CN118384354A (en) | 2024-04-24 | 2024-04-24 | A liquid preparation facilities for hemodialysis |
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| Publication Number | Publication Date |
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| CN118384354A true CN118384354A (en) | 2024-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410498254.4A Pending CN118384354A (en) | 2024-04-24 | 2024-04-24 | A liquid preparation facilities for hemodialysis |
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| Country | Link |
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| CN (1) | CN118384354A (en) |
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- 2024-04-24 CN CN202410498254.4A patent/CN118384354A/en active Pending
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