A high-pressure-resistant testing device for blood purification blood line tube

Abstract

The utility model discloses a blood purification blood road pipe high pressure testing device belongs to purification blood road pipe high pressure testing technical field, and its technical scheme main points include bottom plate, the top fixedly connected with test mechanism of bottom plate, the top of bottom plate and the rear side screw thread connection of test mechanism has auxiliary mechanism, the test mechanism includes distribution box, liquid storage bucket, installation pipe, booster pump, fixed pipe, regulating valve, blood road pipe and blood purifier, through setting test mechanism, liquid storage bucket can store the test liquid of simulation blood, and booster pump can pressurize liquid and through installation pipe, fixed pipe and be delivered to blood road pipe, and regulating valve can adjust liquid pressure size, and blood purifier simulates clinical purification process, realizes the high pressure test of blood road pipe under the real use scene, and pressure sensor and pressure gauge double -monitor pressure, and data acquisition module real -time record test data, solve the problem that the control monitoring device is few in test, and improve test accuracy.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure testing technology for blood purification tubing, and in particular to a high-pressure resistance testing device for blood purification tubing. Background Technology

[0002] The high-pressure resistance test device for blood purification tubing is a professional medical testing device specifically designed to test the pressure resistance of blood tubing in blood purification equipment. Its core objective is to ensure that the blood tubing can safely withstand the expected maximum working pressure during clinical use, preventing blood leakage due to rupture or leakage, thereby protecting the patient's life.

[0003] Hemodialysis is a common form of renal replacement therapy. Simply put, it involves exchanging blood with a solution containing electrolytes at similar concentrations to those in the body through a dialyzer, removing metabolic waste products, maintaining electrolyte and acid-base balance, and then returning the purified blood to the body. Patients with both chronic and acute renal failure may require hemodialysis at some point in their lives.

[0004] The existing patent (publication number: CN215023461U) includes a base, a connector fixedly welded to one side of the bottom end face of the base, lower fixing members fixedly welded to the top corners of the top end face of the base, upper fixing members connected to the upper end of the lower fixing members, an mounting member fixedly installed on the upper end face of the base, a pair of hooks fixedly welded to the top end face of the mounting member, a clamping plate connected to the bottom end of the connector via a pivot, a fixing bolt threadedly connected to the clamping plate on the side away from the pivot, the fixing bolt penetrating the clamping plate, a Velcro fastener attached to one side of the base, a buckle provided on the side of the upper fixing member away from the mounting member, and a fixing block fixedly welded to the side of the lower fixing member near the buckle, the buckle and the fixing block engaging with each other. This blood tubing fixing device has a simple and reasonable structure, novel design, and simple and convenient operation, which can effectively improve the fixing efficiency of blood tubing and has high practical value.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, current methods for testing the high-pressure resistance of blood purification tubing typically involve directly placing the purified simulated liquid into the tank and then using a booster pump to conduct a high-pressure test on the simulated liquid to achieve the desired effect. While this method can perform high-pressure testing on the simulated liquid, it suffers from a lack of monitoring and control devices during the testing process and cannot achieve other auxiliary effects during the high-pressure testing of the simulated liquid, making it impractical.

[0006] To address this, a high-pressure resistance testing device for blood purification tubing is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a high-pressure resistance testing device for blood purification tubing, which can solve the problems of existing high-pressure resistance testing methods for blood purification tubing. These methods typically involve directly placing purified simulated liquid into the tank and then using a booster pump to perform high-pressure testing on the simulated liquid to achieve the desired effect. Although this method can perform high-pressure testing on simulated liquid, it suffers from a lack of various control and monitoring devices during the testing process and the inability to achieve other auxiliary effects during the high-pressure testing of simulated liquid, resulting in insufficient practicality.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure resistance testing device for blood purification tubing, comprising a base plate, a testing mechanism fixedly connected to the top of the base plate, and an auxiliary mechanism threadedly connected to the top of the base plate and the rear side of the testing mechanism;

[0009] The testing mechanism includes a power distribution box, a liquid storage tank, an installation pipe, a booster pump, a fixing pipe, a regulating valve, a blood circuit pipe, and a blood purifier. The power distribution box and the liquid storage tank are fixedly connected to the top of the base plate. The liquid storage tank is fixedly connected to the front of the power distribution box. The booster pump is threadedly connected to the top of the base plate. The installation pipe is fixedly connected between the liquid storage tank and the booster pump. The fixing pipe is fixedly connected to the left side of the booster pump. The regulating valve is fixedly connected to the right side of the fixing pipe. One end of the blood circuit pipe is snapped into the top of the regulating valve. The other end of the blood circuit pipe is fixedly connected to the rear of the power distribution box. The blood purifier is fixedly connected to the surface of the blood circuit pipe.

[0010] Preferably, the auxiliary mechanism includes a limit clamp and a PLC controller. The limit clamp is threadedly connected to the top of the base plate and the rear side of the distribution box, respectively. The mounting pipe and the blood circuit pipe are respectively sleeved on the inner wall of the limit clamp.

[0011] Preferably, a pressure relief valve is fixedly connected to the surface of the blood tubing, and a pressure sensor is fixedly connected between the pressure relief valve and the blood purifier.

[0012] Preferably, a support frame is fixedly connected to the top of the base plate, and the blood purifier is fixedly connected to the top of the support frame.

[0013] Preferably, a data acquisition module is fixedly connected to the surface of the blood circuit tube, and an energy storage device is fixedly connected between the regulating valve and the booster pump.

[0014] Preferably, a smart valve is fixedly connected to the surface of the blood circuit tube, and the smart valve is fixedly connected above the regulating valve.

[0015] Preferably, a number of storage boxes are movably connected to the top of the base plate, and an emergency stop button is fixedly connected to the front of the distribution box.

[0016] Preferably, a solenoid valve is fixedly connected to the surface of the mounting pipe, a replenishment pipe is fixedly connected to the right side of the liquid storage tank, and a pressure gauge is fixedly connected to the top of the regulating valve.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application sets up a testing mechanism, in which a storage tank can store test liquid simulating blood, a booster pump can pressurize the liquid and deliver it to the blood circuit tubes through an installation tube and a fixed tube, and a regulating valve can adjust the liquid pressure. The blood purifier simulates the clinical purification process, realizing high pressure resistance testing of the blood circuit tubes in real use scenarios. At the same time, the pressure sensor and pressure gauge monitor the pressure, and the data acquisition module records the test data in real time, solving the problem of insufficient control and monitoring devices in traditional testing, and improving the accuracy of testing and the integrity of data.

[0019] 2. The limit clamp in the auxiliary mechanism of this application can fix the installation tube and blood circuit tube to prevent the pipeline from shaking during the test and affecting the test results. The PLC controller realizes the automated control of components such as booster pump, solenoid valve, and intelligent valve, reducing human operation error. The pressure relief valve automatically releases pressure when the pressure exceeds the standard, and the emergency stop button can interrupt the test in an emergency, improving equipment safety and practicality. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of a high-pressure resistance testing device for blood purification tubing according to the present invention;

[0021] Figure 2 This is a partial structural diagram of the top of the base plate of this utility model;

[0022] Figure 3 This is a partial structural diagram of the rear side of the distribution box of this utility model;

[0023] Figure 4 This is a partial structural schematic diagram of the auxiliary mechanism of this utility model;

[0024] Figure 5 This is a partial structural diagram of the left side of the liquid storage tank of this utility model.

[0025] In the diagram, 1. Testing mechanism; 11. Distribution box; 12. Liquid storage tank; 13. Installation pipe; 14. Booster pump; 15. Fixing pipe; 16. Regulating valve; 17. Blood circuit pipe; 18. Blood purifier; 19. Pressure sensor; 2. Auxiliary mechanism; 21. Limit clamp; 22. PLC controller; 23. Support frame; 24. Pressure relief valve; 25. Data acquisition module; 26. Energy storage device; 27. Smart valve; 28. Storage box; 29. ​​Pressure gauge; 3. Base plate; 4. Emergency stop button; 5. Solenoid valve; 6. Infusion pipe. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A high-pressure resistance testing device for a blood purification blood circuit tube 17 includes a base plate 3, a testing mechanism 1 fixedly connected to the top of the base plate 3, and an auxiliary mechanism 2 threadedly connected to the top of the base plate 3 and the rear side of the testing mechanism 1.

[0029] The testing unit 1 includes a power distribution box 11, a liquid storage tank 12, an installation pipe 13, a booster pump 14, a fixing pipe 15, a regulating valve 16, a blood circuit pipe 17, and a blood purifier 18. The power distribution box 11 and the liquid storage tank 12 are fixedly connected to the top of the base plate 3. The liquid storage tank 12 is fixedly connected to the front of the power distribution box 11. The booster pump 14 is threadedly connected to the top of the base plate 3. The installation pipe 13 is fixedly connected between the liquid storage tank 12 and the booster pump 14. The fixing pipe 15 is fixedly connected to the left side of the booster pump 14. The regulating valve 16 is fixedly connected to the right side of the fixing pipe 15. One end of the blood circuit pipe 17 is snapped onto the top of the regulating valve 16. The other end of the blood circuit pipe 17 is fixedly connected to the rear of the power distribution box 11. The blood purifier 18 is fixedly connected to the surface of the blood circuit pipe 17.

[0030] In this embodiment: By setting the base plate 3 as the basic support carrier of the equipment, a stable installation platform is provided for the testing mechanism 1 and the auxiliary mechanism 2, ensuring that the position of each component is fixed during the test and avoiding the impact of equipment shaking on the test accuracy. By setting the testing mechanism 1, the core functional component of the high-pressure resistance test of the blood circuit tube 17 can be realized. By setting the auxiliary mechanism 2, the test can be assisted in terms of fixing, control, monitoring and protection. The two work together to improve the accuracy, safety and practicality of the test.

[0031] Specifically, such as Figure 2 , Figure 3 As shown, the auxiliary mechanism 2 includes a limit clamp 21 and a PLC controller 22. The limit clamp 21 is threadedly connected to the top of the base plate 3 and the rear side of the power distribution box 11, respectively. The mounting pipe 13 and the blood circuit pipe 17 are respectively sleeved on the inner wall of the limit clamp 21.

[0032] Specifically, such as Figure 2 , Figure 3As shown, a pressure relief valve 24 is fixedly connected to the surface of the blood circuit 17, and a pressure sensor 19 is fixedly connected between the pressure relief valve 24 and the blood purifier 18.

[0033] Specifically, such as Figure 2 As shown, a support frame 23 is fixedly connected to the top of the base plate 3, and the blood purifier 18 is fixedly connected to the top of the support frame 23.

[0034] In this embodiment: A power distribution box 11 provides power and circuit control for various electrical components of the equipment, such as the booster pump 14 and solenoid valve 5, ensuring normal power supply. A storage tank 12 stores the test liquid simulating blood, and a replenishment pipe 6 replenishes the liquid when it is insufficient, ensuring continuous testing. An installation pipe 13 connects the storage tank 12 and the booster pump 14 to deliver the liquid to be pressurized. The booster pump 14 pressurizes the liquid, providing the high-pressure environment required for testing. An energy storage device 26 stabilizes the pressure and prevents excessive pressure fluctuations. A fixed pipe 15 delivers the pressurized liquid to a regulating valve 16, which allows for manual or automatic adjustment of the liquid pressure to meet testing requirements at different pressure levels. The blood circuit 17 is the core component to be tested; the liquid flows through the blood circuit 17 under high pressure. Simulating clinical use, the blood purifier 18 simulates the purification process in hemodialysis, making the test scenario closer to real-world conditions. A limiting clamp 21 clamps and secures the installation tube 13 and blood circuit tube 17, preventing displacement or shaking due to pressure during testing and ensuring accurate results. A PLC controller 22 programmably controls the actions of components such as the booster pump 14, solenoid valve 5, and intelligent valve 27, achieving automated testing and reducing human error. A pressure sensor 19 monitors the pressure within the blood circuit tube 17 in real time and transmits the pressure signal to the PLC controller 22. A pressure gauge 29 displays the current pressure value for easy operator observation. When the pressure exceeds a preset safety value, a pressure relief valve 24 automatically opens to release pressure, protecting the blood circuit tube 17 and the equipment from damage or danger due to overpressure.

[0035] Specifically, such as Figure 2 , Figure 3 As shown, a data acquisition module 25 is fixedly connected to the surface of the blood circuit 17, and an energy storage device 26 is fixedly connected between the regulating valve 16 and the booster pump 14.

[0036] Specifically, such as Figure 2 , Figure 3 As shown, a smart valve 27 is fixedly connected to the surface of the blood circuit 17, and the smart valve 27 is fixedly connected above the regulating valve 16.

[0037] In this embodiment: By setting up a support frame 23, the blood purifier 18 can be supported, so that the blood purifier 18 maintains a stable installation height and position, and avoids displacement due to its own weight or pipeline pulling. By setting up a data acquisition module 25, the pressure data, test time and other information of the pressure relief valve 24 can be collected in real time and stored or transmitted to external devices, which is convenient for subsequent analysis of test results and tracing of the test process. By setting up an energy storage device 26, pressure fluctuations can be absorbed to keep the pressure in the pipeline stable and ensure the accuracy of the test pressure. By setting up an intelligent valve 27 controlled by a PLC controller 22, it can be automatically opened or closed to realize the switching of liquid flow direction or pipeline opening and closing, thereby improving the automation level of the test.

[0038] Specifically, such as Figure 2 , Figure 4 As shown, several storage boxes 28 are movably connected to the top of the base plate 3, and an emergency stop button 4 is fixedly connected to the front of the distribution box 11.

[0039] Specifically, such as Figure 4 As shown, a solenoid valve 5 is fixedly connected to the surface of the mounting pipe 13, a replenishment pipe 6 is fixedly connected to the right side of the liquid storage tank 12, and a pressure gauge 29 is fixedly connected to the top of the regulating valve 16.

[0040] In this embodiment: By setting up a storage box 28, it can be used to store test tools such as wrenches, sealing tape, spare parts such as sealing rings, or test record files, making it convenient for operators to access and organize them, and improving operational convenience. By setting up an emergency stop button 4, when the equipment malfunctions, such as a sudden increase in pressure or pipeline leakage, pressing the emergency stop button 4 can immediately cut off the power supply and stop the operation of all components, ensuring the safety of operators and equipment. By setting up a solenoid valve 5 controlled by a PLC controller 22, it can automatically control the opening and closing of the installation pipe 13, realizing automated control of liquid delivery without the need for manual switching of pipelines. By setting up a replenishment pipe 6 connected to an external liquid source, when the liquid in the storage tank 12 is insufficient, the valve of the replenishment pipe 6 can be opened to replenish the liquid without disassembling the storage tank 12, simplifying the operation process.

[0041] Working Principle: When the user needs to use this device to perform a high-pressure resistance test on the blood purification circuit tube 17, first connect the blood circuit tube 17 to be tested according to the diagram, with one end snapped onto the top of the regulating valve 16 and the other end fixedly connected to the rear of the distribution box 11, ensuring that the pipeline connection is tight and leak-free. Then, inject sufficient simulated blood test liquid into the storage tank 12 through the replenishment tube 6 on the right side of the storage tank 12, and close the valve of the replenishment tube 6. Next, insert the installation tube 13 and the blood circuit tube 17 into the inner wall of the limiting clamp 21 respectively, and adjust the clamping degree of the limiting clamp 21 to ensure that the pipeline is firmly fixed and without loosening. After completion, turn on the power switch of the distribution box 11, and set the test parameters through the PLC controller 22, including the target pressure value, test duration, etc. At the same time, input the upper pressure limit value of the pressure sensor 19 into the PLC controller 22 to set the trigger pressure of the pressure relief valve 24. During the test, the pressure sensor 19 detects the pressure in the blood circuit tube 17 in real time, and the data acquisition module 25 records the pressure. The pressure gauge 29 displays the current pressure value, and the operator can monitor the test status in real time through the display screen of the PLC controller 22. If the pressure exceeds the preset upper limit, the pressure relief valve 24 will automatically open to release pressure, and the PLC controller 22 will issue an alarm to alert the operator. In case of emergency, such as pipeline leakage or equipment failure, the operator can press the emergency stop button 4 on the front of the distribution box 11 to immediately stop the equipment operation and ensure safety. After the test reaches the preset duration, the PLC controller 22 controls the booster pump 14 to stop working, closes the solenoid valve 5, and opens the pressure relief valve 24 to slowly release the pressure in the pipeline. After the pressure drops to a safe value, the limit clamp 21 is released, the blood circuit tube 17 to be tested is disassembled, and the blood circuit tube 17 is checked for cracks, leaks, etc. Combined with the data recorded by the data acquisition module 25, it is determined whether the high pressure resistance performance of the blood circuit tube 17 is qualified. After the test is completed, the test tools and records are organized, the tools are put into the storage box 28, and the power of the distribution box 11 is turned off.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-pressure resistance testing device for blood purification tubing, comprising a base plate (3), characterized in that: The top of the base plate (3) is fixedly connected to the test mechanism (1), and the top of the base plate (3) and the rear side of the test mechanism (1) are threadedly connected to the auxiliary mechanism (2); The testing mechanism (1) includes a power distribution box (11), a liquid storage tank (12), an installation pipe (13), a booster pump (14), a fixing pipe (15), a regulating valve (16), a blood circuit pipe (17), and a blood purifier (18). The power distribution box (11) and the liquid storage tank (12) are fixedly connected to the top of the base plate (3). The liquid storage tank (12) is fixedly connected to the front of the power distribution box (11). The booster pump (14) is threadedly connected to the top of the base plate (3). The tube (13) is fixedly connected between the storage tank (12) and the booster pump (14). The fixed tube (15) is fixedly connected to the left side of the booster pump (14). The regulating valve (16) is fixedly connected to the right side of the fixed tube (15). One end of the blood circuit tube (17) is snapped onto the top of the regulating valve (16). The other end of the blood circuit tube (17) is fixedly connected to the rear of the power distribution box (11). The blood purifier (18) is fixedly connected to the surface of the blood circuit tube (17).

2. The high-pressure resistance testing device for blood purification tubing according to claim 1, characterized in that: The auxiliary mechanism (2) includes a limiting clamp (21) and a PLC controller (22). The limiting clamp (21) is threadedly connected to the top of the base plate (3) and the rear side of the power distribution box (11). The mounting pipe (13) and the blood circuit pipe (17) are respectively sleeved on the inner wall of the limiting clamp (21).

3. The high-pressure resistance testing device for blood purification tubing according to claim 1, characterized in that: A pressure relief valve (24) is fixedly connected to the surface of the blood circuit tube (17), and a pressure sensor (19) is fixedly connected between the pressure relief valve (24) and the blood purifier (18).

4. The high-pressure resistance testing device for blood purification tubing according to claim 1, characterized in that: A support frame (23) is fixedly connected to the top of the base plate (3), and the blood purifier (18) is fixedly connected to the top of the support frame (23).

5. The high-pressure resistance testing device for blood purification tubing according to claim 1, characterized in that: A data acquisition module (25) is fixedly connected to the surface of the blood circuit tube (17), and an energy storage device (26) is fixedly connected between the regulating valve (16) and the booster pump (14).

6. The high-pressure resistance testing device for blood purification tubing according to claim 1, characterized in that: A smart valve (27) is fixedly connected to the surface of the blood line tube (17), and the smart valve (27) is fixedly connected above the regulating valve (16).

7. The high-pressure resistance testing device for blood purification tubing according to claim 1, characterized in that: The top of the base plate (3) is movably connected to several storage boxes (28), and the front side of the power distribution box (11) is fixedly connected to an emergency stop button (4).

8. The high-pressure resistance testing device for blood purification tubing according to claim 1, characterized in that: A solenoid valve (5) is fixedly connected to the surface of the mounting pipe (13), a replenishment pipe (6) is fixedly connected to the right side of the liquid storage tank (12), and a pressure gauge (29) is fixedly connected to the top of the regulating valve (16).

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