Leak detection device and method for infusion pump pipeline

Abstract

The present invention discloses a leak detection device for an infusion pump pipeline, comprising a workbench, on which a first plugging component, a limit component, a second plugging component, and a third plugging component are arranged for fixing and plugging the air permeable port of the infusion pump management; a pressure regulating filter is used to control the stability of the gas source so that the first plugging component, the second plugging component, and the third plugging component will not have a situation where the pressure is too high or too low when working; and an air leakage tester is used to fill the infusion pump management with a specific air pressure required for detection and detect whether the infusion pump management has a leak. Through the above structure, the water method detection is changed to the gas method detection, which reduces the probability of the infusion pump pipeline being contaminated by water, effectively reduces the work intensity of the workers, and improves the detection efficiency of the infusion pump pipeline.

Description

Technical Field

[0001] The invention relates to the field of infusion pump pipeline production, in particular to a leakage detection device and a leakage detection method for an infusion pump pipeline. Background Art

[0002] As a sophisticated and complex medical infusion pipeline, the infusion pump pipeline is connected to a variety of functional components, resulting in multiple connection points in the pipeline. The more connection points there are, the higher the probability of leakage in the pipeline system. If there is a leakage point in the pipeline system, it cannot be used normally for the delivery of liquid medicine, so leak detection is required after the infusion pump pipeline is connected. The original infusion pump pipeline uses water leak detection. The problem is that during the detection process, the infusion pump pipeline must be immersed in water as a whole to observe whether the pipeline system under the inflatable body will have surface bubbles. The whole process requires workers to observe with their eyes, which is highly intensive and inefficient. In addition, after the water leak detection, the surface of the infusion pump pipeline has residual moisture. In the subsequent process, the residual moisture can easily enter the infusion pump pipeline and cause pollution to it. Therefore, there is an urgent need for a device and method that can realize rapid leak detection of the infusion pump pipeline without polluting the infusion pump pipeline. Summary of the invention

[0003] In view of the above-mentioned deficiencies, the object of the present invention is to provide a leak detection device and a leak detection method for an infusion pump pipeline, so as to solve the problem that the existing water leak detection method is inefficient and easy to contaminate the infusion pump pipeline.

[0004] To achieve the above object, the technical solution of the present invention is:

[0005] A leak detection device for an infusion pump pipeline, comprising

[0006] Workbench; at least one set

[0007] A first plugging component is arranged on a workbench to plug the drug outlet end of the infusion pump pipeline;

[0008] The limiting assembly is arranged on the workbench in one-to-one correspondence with the first blocking assembly, and all non-catheter components of the infusion pump pipeline except the drug outlet end are placed in the limiting assembly at a limited position;

[0009] The second plugging component is arranged on the workbench and abuts against the connection end of the dosing tee during leak detection;

[0010] The third plugging component is arranged on the workbench and is plugged on the dosing end of the dosing tee during leak detection;

[0011] The air leakage tester is electrically controlled and connected to the first plugging component, the second plugging component, and the third plugging component respectively. During leak detection, a detection gas with a fixed air pressure is filled into the infusion pump pipeline through the second plugging component to determine whether there is a leak in the infusion pump pipeline;

[0012] The pressure regulating filter is arranged on the workbench and connected to the air inlet ends of the first plugging component, the second plugging component and the third plugging component.

[0013] Preferably, the first blocking assembly includes a first telescopic cylinder longitudinally arranged in the workbench, the telescopic rod of the first telescopic cylinder is transmission-connected to a plug, and the plug slides through the workbench and extends above the workbench.

[0014] Preferably, the second sealing assembly includes a second telescopic cylinder fixed on the workbench, the second telescopic cylinder is transmission-connected to a slider, an air duct is arranged in the slider, the air duct has a first end and a second end, the first end is connected to an air leakage testing machine, and the second end is connected to the connecting end after the slider abuts against the connecting end, and a sealing ring coaxial with the second end is also arranged on the surface of the slider.

[0015] Preferably, the limiting assembly includes a first holder fixed on the workbench, and a first placement groove adapted to the dosing tee is provided in the first holder. After the dosing tee is placed in the first placement groove, the connecting end and the dosing end are exposed from the first holder setting, and a first conduit discharge groove is also provided on the side of the first placement groove facing away from the connecting end; the third blocking assembly includes a third telescopic cylinder, and the third telescopic cylinder is transmission-connected to the first sealing member on the dosing end so as to be sealably abutted.

[0016] Preferably, the limiting assembly also includes a second clamping seat fixed on the workbench, a second placement groove adapted to the precision filter is provided in the second clamping seat, and second duct discharge grooves are respectively provided at both ends of the second placement groove; a second sealing member transmission-connected to the third telescopic cylinder is also provided in the third sealing member, and the third telescopic cylinder drives the second sealing member to seal on the air window of the precision filter.

[0017] Preferably, the limiting assembly also includes a third holder fixed on the workbench, a third placement slot adapted to the additional medicine bag is provided in the third holder, and third catheter discharge slots are respectively provided at both ends of the third placement slot; a limiting column transmission-connected to the third telescopic cylinder is correspondingly provided in the third blocking assembly, and the third telescopic cylinder drives the limiting column to slide into the third placement slot, leaving a gap between the rear end surface and the additional medicine bag for the additional medicine bag to swell to a working state.

[0018] Preferably, grating detection mechanisms are provided on both sides of the workbench, the grating detection mechanisms are located between the second blocking component and the worker, and the grating detection mechanisms are electrically connected to the air leakage tester.

[0019] Preferably, the air leakage testing machine has a start switch, the start switch is fixed on the workbench, and the start switch is a two-hand start switch.

[0020] Preferably, the air leakage tester and the air inlet end of the pressure regulating filter are connected to an air dryer, and the air inlet end of the air dryer is connected to an air filter.

[0021] Working principle: When performing leakage detection on the infusion pump pipeline, the staff first seals the drug outlet end of the infusion pump pipeline on the first plugging component, and then places the drug adding tee of the infusion pump pipeline in the limit component. Then the staff starts the present invention through the start switch on the air leakage tester, and the air leakage tester drives the second plugging component and the third plugging component electrically connected thereto to extend successively, and the connection end and the drug adding end on the drug adding tee are blocked respectively. Subsequently, the air leakage tester fills the infusion pump pipeline with detection air of constant air pressure through the second plugging component, and detects whether there is leakage in the infusion pump pipeline through the air leakage tester.

[0022] It should be noted that the present invention also discloses a rapid detection method for an infusion pump pipeline, which is as follows:

[0023] A leak detection method using an infusion pump pipeline leak detection device, comprising:

[0024] S1: Preparation for pipeline placement, seal the drug outlet end of the infusion pump pipeline on the plug of the first plugging component, place the drug-adding tee in the first placement groove of the first holder without moving, and ensure that the connection end and the drug-adding end of the drug-adding tee are exposed outside the first holder, and at this time, the catheter connected to the drug-adding tee is led out through the first catheter discharge groove; if the infusion pump pipeline is also equipped with a precision filter and an additional drug bag, the staff will place the precision filter horizontally in the second placement groove and the catheters at both ends of the precision filter will be led out through the second catheter discharge groove, and the additional drug bag will be placed squarely in the third placement groove, and the catheters at both ends of the additional drug bag will be led out through the third catheter discharge groove;

[0025] S2: Blocking and limiting. The staff presses two start switches with both hands at the same time to activate the air leakage tester. The air leakage tester drives the second telescopic cylinder and the third telescopic cylinder to extend synchronously. The second telescopic cylinder drives the slider and finally makes the sealing ring on the slider abut against the connection end. The air leakage tester is then connected to the infusion pump pipeline. The first sealing member is blocked on the dosing end of the dosing tee under the drive of the third telescopic cylinder. If the infusion pump pipeline is equipped with a precision filter and an additional medicine bag, the second sealing member and the limiting column arranged on the third telescopic cylinder will drop synchronously with the first sealing member. Finally, the second sealing member blocks the air window of the precision filter, and the limiting column is suspended 0.3 to 0.5 mm above the additional medicine bag.

[0026] S3: Inflation. The air leakage tester continuously inflates the infusion pump pipeline for 4-5 seconds to raise the air pressure in the infusion pump pipeline to 80kpa. At this time, the precision filter and the additional medicine bag in the infusion pump pipeline are also filled with the test gas of the same air pressure. In addition, due to the restriction of the third holder and the limiting column, the additional medicine bag presents a bulging state similar to that during the infusion of the drug solution after inflation.

[0027] S4: Maintaining pressure. After the inflation is completed, the air leakage tester stops inflating the infusion pump pipeline and maintains the pressure for 6 to 8 seconds to stabilize the air pressure in the infusion pump pipeline.

[0028] S5: Test. After the pressure maintenance is completed, the air leakage tester conducts a continuous air pressure test on the pressure in the infusion pump pipeline for 4 to 5 seconds through the detection interface. If the air pressure in the infusion pump pipeline decreases and the pressure decrease value exceeds the set leakage upper limit of 80pa, the air leakage tester will automatically determine that the infusion pump pipeline is leaking, make a corresponding mark and sound an alarm.

[0029] S6: Exhaust. After the test is completed, the air leakage tester drives the second and third telescopic cylinders to reset, the drug-adding tee and precision filter are connected to the atmosphere again, and the gas in the infusion pump pipeline is discharged; at the same time, the air leakage tester also synchronously drives the first telescopic cylinder to retract, and the first telescopic cylinder drives the plug to withdraw from the drug outlet end;

[0030] S7: Unloading. Workers store the infusion pump tubing marked as leaking separately and pack the normal infusion pump tubing neatly to facilitate its transfer to the next workstation, while preparing for the next infusion pump tubing inspection.

[0031] S8: Reset. The first telescopic cylinder is restored to its initial state under the drive of the air leakage tester, and the plug is extended to the workbench again for the next leakage test.

[0032] Beneficial effects: 1. Through the above structure, the infusion pump pipeline can be quickly fixed and blocked, and the traditional water method detection is changed to gas method detection, which not only reduces the probability of water contamination inside the infusion pump pipeline, but also ensures the efficiency of air leakage detection in the infusion pump pipeline. 2. Air pressure detection does not require naked eye observation, which reduces the work intensity of workers, especially the burden on the eyes. 3. Compared with traditional water method detection, the use of the equipment in the present invention for detection can save the subsequent process steps of drying the surface of the infusion pump pipeline, improve production efficiency, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the present invention;

[0034] Figure 2 yes Figure 1 The main view;

[0035] Figure 3 yes Figure 1 Schematic diagram of the structure after removing the top shield;

[0036] Figure 4 yes Figure 3 A top view of

[0037] Figure 5 superior Figure 3 Right view of;

[0038] Figure 6 is a structural schematic diagram when the second plugging component is connected to the air leakage testing machine;

[0039] Figure 7 It is a schematic diagram of the structural principle of the present invention;

[0040] Figure 8 This is a diagram showing the changes in air pressure in the infusion pump pipeline during testing.

[0041] Reference numerals:

[0042] 100. Workbench

[0043] 200. First blocking assembly 210. First telescopic cylinder 220. Plug;

[0044] 300. Limiting assembly 310. First card holder 311. First placement slot 312. First conduit discharge slot 320. Second card holder 321. Second placement slot 322. Second conduit discharge slot 330. Third card holder 331. Third placement slot 332. Third conduit discharge slot;

[0045] 400. Second blocking assembly 410. Second telescopic cylinder 420. Slider 430. Sealing ring 440. Airway 441. First end 442. Second end;

[0046] 500. third blocking assembly 510. third telescopic cylinder 520. first sealing member 530. second sealing member 540. limiting column;

[0047] 600. Air leakage tester 610. Detection interface 620. Start switch;

[0048] 700. Pressure regulating filter;

[0049] 800. Dosing tee 810. Connection end 820. Dosing end;

[0050] 900. Precision filter;

[0051] 1000.Additional medicine capsule;

[0052] 1100. Grating detection mechanism;

[0053] 1200. Air dryer;

[0054] 1300. Air filter. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the reason why the detection air pressure value used in leakage detection is 80kpa is only because the air pressure stability and detection accuracy of the SLA series air leakage tester used in the present invention are the best at 80kpa. If other series of air leakage testers are used, adaptive adjustments can be made within the range of 60 to 100kpa according to the optimal test value of the air leakage tester (within the range of 60 to 100kpa, the infusion pump pipeline can not only maintain good filling and swelling but also will not undergo irreversible deformation).

[0056] Specific as Figures 1 to 7The leak detection device for an infusion pump pipeline shown in the figure includes a workbench 100, on which at least one group of first blocking components 200 is arranged, and the first blocking component is used to block the drug outlet end of the infusion pump pipeline to be tested (not shown in the figure). At the same time, a limiter component 300 corresponding to the number of the first blocking components 300 is also arranged on the workbench. During the inspection, the non-duct components of the infusion pump pipeline except the drug outlet end are embedded in the limiter component 300 in an unchangeable position. In order to block the connecting end 810, the drug adding end 820 of the drug adding tee 800 in the infusion pump pipeline and the air window of the precision filter 900, and at the same time limit the bulging degree and shape of the additional drug bag 1000, a second blocking component 400 and a third blocking component 500 are also arranged on the workbench. In addition, an air leakage tester 600 is arranged beside the workbench, and the air leakage tester can fill the infusion pump pipeline with a detection gas of a specific air pressure value through the second plugging component connected thereto and judge whether the infusion pump pipeline is leaking. It should be noted that, for the convenience of operation, the start switch 620 of the air leakage tester is arranged on the workbench 100. In addition, in order to achieve effective coordination between the air leakage tester and the first plugging component 200, the second plugging component 400 and the third plugging component 500, the first plugging component 200, the second plugging component 400 and the third plugging component 500 are electrically connected to the air leakage tester 600. In order to make the working state of the first plugging component 200, the second plugging component 400 and the third plugging component 500 more stable, the air inlet end of the first plugging component 200, the second plugging component 400 and the third plugging component 500 is connected to the pressure regulating filter 700 through a conduit.

[0057] It should be noted that in the present invention, in order to facilitate the disengagement of the infusion pump pipeline from the first plugging assembly 200 after the test is completed, the first plugging assembly 200 includes a first telescopic cylinder 210 longitudinally arranged in the workbench 100, and the end of the telescopic rod of the first telescopic cylinder is connected to a columnar plug 220, which slides through the workbench 100 and extends to the top of the workbench. It should be noted that the initial state of the first telescopic cylinder is the extended state, that is, under the action of the first telescopic cylinder 210, the plug 220 is often extended from the workbench 100. When leak detection is required, the staff can directly sleeve the drug outlet end on the plug. When the test is completed, the air leakage tester 600 electrically connected to the first telescopic cylinder 210 drives the first telescopic cylinder to retract, so that the plug 220 automatically withdraws from the drug outlet end of the infusion pump pipeline, which greatly facilitates the operation of the workers.

[0058] In addition, in order to facilitate the blocking of the connection end 810 by the second blocking component 400 and the air leakage tester to inflate the infusion pump pipeline through the second blocking component 400, the second blocking component 400 specifically includes a second telescopic cylinder 410 fixedly arranged on the workbench 100, and a slider 420 is connected to the end of the telescopic rod of the second telescopic cylinder, and the slider can abut on the end surface of the connection end 810 under the drive of the second telescopic cylinder 410. At the same time, in order to ensure the sealing performance, a sealing ring 430 that can be sealed against the connection end is also arranged on the surface of the slider. In order to facilitate the inflation of the infusion pump pipeline, an airway 440 is arranged in the slider, and the airway has a first end 441 and a second end 442. Among them, the first end is connected to the detection interface 610 of the air leakage tester 600 through a conduit, and the port of the second end is coaxially arranged with the sealing ring 430 to ensure the docking of the airway and the infusion pump pipeline when the slider abuts against the connection end.

[0059] It should also be noted that the infusion pump pipeline has a variety of models, including Type A: the dosing tee and the drug outlet are connected in sequence through a catheter; Type B: the dosing tee, the precision filter, and the drug outlet are connected in sequence through a catheter; Type C: the dosing tee, the precision filter, and the drug outlet are connected in sequence through a catheter, and an additional drug bag is connected in parallel next to the precision filter.

[0060] When it is necessary to detect the A-type infusion pump pipeline, the limit assembly 300 includes a first holder 310 fixedly mounted on the workbench 100, and a first placement groove 311 adapted to the dosing tee is provided in the first holder. When the dosing tee 800 is placed in the first placement groove 311, the connecting end 810 and the dosing end 820 of the dosing tee are exposed outside the first holder 310, so that the second blocking assembly and the third blocking assembly can block the above two. In detail, the third blocking assembly 500 includes a third telescopic cylinder 510 longitudinally arranged on the workbench, the third telescopic cylinder is electrically connected to the air leakage tester, and a first sealing member 520 is transmission-connected at the end of the telescopic rod of the third telescopic cylinder 510, and the first sealing member is made of elastic rubber material. During leak detection, the third telescopic cylinder is driven to extend through the air leakage tester 600 so that the first sealing member is sealed against the dosing end. It should be noted that in order to prevent the catheter from bending and causing the infusion pump pipeline to be blocked when the dosing tee is pressurized, a first catheter discharge groove 312 connected to the first placement groove 311 is also provided on the side of the first holder 310 facing away from the connection end, and the catheter connected to the dosing tee is led out through the first catheter discharge groove.

[0061] When it is necessary to detect the infusion pump pipeline of type B, the limit assembly 300 also includes a second holder 320 fixedly mounted on the workbench 100, and a second placement groove 321 is provided in the second holder for the precision filter 900 to be placed. Correspondingly, a second seal 530 installed at the end of the telescopic rod of the third telescopic cylinder 510 is added to the third blocking assembly 500. When the second seal is driven by the third telescopic cylinder to be inserted into the second placement groove 321, the end face of the second seal with a certain elasticity abuts against the air window of the precision filter to block the air window. In addition, in order to prevent the catheters at both ends of the precision filter from bending when the precision filter is under pressure, causing the infusion pump pipeline to be blocked, thereby affecting the accuracy of the detection, a second catheter discharge groove 322 connected to the second placement groove 321 is also provided at both ends of the second placement groove, and the catheters at both ends of the precision filter are led out of the second placement groove via the second catheter discharge groove.

[0062] When it is necessary to test the C-type infusion pump pipeline, the limiting component 300 also needs to include a third holder 330 fixedly mounted on the workbench 100, and a third placement slot 331 with the same shape as the additional medicine bag 1000 is provided in the third holder. In contrast, a limiting column 540 is added to the third blocking component 500, and the limiting column is also connected to the end of the telescopic rod of the third telescopic cylinder 510. When leak detection, the limiting column 540 is driven by the third telescopic cylinder and slides into the third placement slot 331 until the end face of the limiting column stops at a distance of 0.3 to 0.5 mm from the additional medicine bag in the third placement slot. In this state, after the detection gas is filled into the infusion pump pipeline, the additional medicine bag can only swell to a state similar to that when the medicine solution is infused due to the limitation of the limiting column and the third placement slot. It should also be noted that in order to prevent the catheters at both ends of the additional medicine bag placed in the third placement groove from bending and affecting the conduction of the infusion pump pipeline, a third catheter discharge groove 332 connected to the third placement groove is also provided at both ends of the third placement groove 331. When the additional medicine bag is added to the third placement groove, the catheters at both ends of the additional medicine bag are led out through the third catheter placement groove.

[0063] It should also be noted that in order for the present invention to be able to detect any one of the infusion pump pipelines of Type A, Type B, and Type C at any time, the first clamping seat, the second clamping seat, and the third clamping seat can always be maintained on the workbench, and the first seal, the second seal, and the limiting column can also always be maintained in the third blocking component.

[0064] It should be noted that, in order to improve the safety of workers' operations and prevent workers from being injured, especially to prevent workers' hands from being crushed, grating detection mechanisms 1100 are also provided on both sides of the workbench 100, and the grating detection mechanisms are located between the worker sitting on the workbench and the second blocking component. When the worker's hands extend through the grating formed by the grating detection mechanism, the grating detection mechanism 1100 senses the worker's hands and generates an electrical signal, which is sent to the air leakage tester 600 connected thereto, and then the air leakage tester controls the second telescopic cylinder in the second blocking component not to extend, so as to prevent the hands of the worker who is still operating from being crushed.

[0065] It should be noted that, in order to further prevent the worker's hands from being pressed during operation, the start switch 610 of the air leakage tester is a two-hand start switch, that is, the worker needs to press two start switches with both hands at the same time to start the device.

[0066] It should be noted that there may be moisture in the compressed air. When the compressed air is pressurized and depressurized during operation, the moisture contained therein is easy to condense into liquid, and the liquid water is easy to contaminate the inside of the infusion pump pipeline, and it is also easy to destroy the stable operation of the first telescopic cylinder 210, the second telescopic cylinder 410 and the air leakage tester 600. In order to prevent the above situation from happening, an air dryer 1200 is also connected to the air inlet end of the air leakage tester 600 and the pressure regulating filter 700, and the moisture in the compressed air can be fully removed by the rod air dryer. In addition, there are certain dust impurities in ordinary compressed air, and in order to prevent the dust impurities from polluting the inside of the infusion pump pipeline, an air filter 1300 is also connected to the air inlet end of the air dryer 1200.

[0067] In addition, the present invention also discloses

[0068] A leak detection method using an infusion pump pipeline leak detection device, comprising:

[0069] S1: Preparation for pipeline placement. First, seal the drug outlet end of the infusion pump pipeline on the plug of the first plugging component. Then the staff will place the drug-adding tee in the first placement slot of the first holder, so that the drug-adding tee cannot move in the first placement slot. At the same time, it is necessary to ensure that the connection end (the end used to connect to the infusion pump) and the drug-adding end (the input end for additional drug infusion) of the drug-adding tee are exposed outside the first holder. At this time, the catheter connected to the drug-adding tee is led out through the first catheter discharge slot; if the infusion pump pipeline is also equipped with a precision filter and an additional drug bag, the staff will place the precision filter horizontally in the second placement slot and the catheters at both ends of the precision filter will be led out through the second catheter discharge slot, and the additional drug bag will be placed squarely in the third placement slot, and the catheters at both ends of the additional drug bag will be led out through the third catheter discharge slot;

[0070] S2: Blocking and limiting. The staff presses two start switches with both hands at the same time to activate the air leakage tester. The air leakage tester then drives the second telescopic cylinder and the third telescopic cylinder connected to it by electrical control to extend; the second telescopic cylinder drives the slider to move toward the connection end and finally makes the sealing ring on the slider abut against the connection end; at the same time, the airway in the second blocking component of the air leakage tester is connected to the infusion pump pipeline; and the first seal is blocked on the dosing end of the dosing tee under the drive of the third telescopic cylinder; in addition, if the infusion pump pipeline is provided with a precision filter and an additional medicine bag, the second seal and the limiting column arranged on the third telescopic cylinder are synchronously lowered with the first seal, and finally, while the first seal is blocked on the dosing end, the second seal synchronously enters the second placement groove and blocks on the air window of the precision filter, and the limiting column also enters the third placement groove and finally hovers 0.3 to 0.5 mm above the additional medicine bag to ensure that after the infusion pump pipeline is inflated, the additional medicine bag can be inflated to the working state;

[0071] S3: Inflation. The air leakage tester continuously inflates the infusion pump pipeline through the airway in the second plugging component for 4 to 5 seconds, so that the air pressure in the infusion pump pipeline rises to 80kpa. At this time, the precision filter and the additional medicine bag in the infusion pump pipeline are also inflated with gas synchronously. Due to the effect of the second holder and the second seal, the air window on the precision filter is blocked and no air leakage occurs. Due to the restriction of the third holder and the limiting column, the additional medicine bag after inflation presents a bulging state close to that during the infusion of the drug solution.

[0072] S4: Maintaining pressure. After the inflation is completed, the air leakage tester stops inflating the infusion pump pipeline and maintains the pressure for 6 to 8 seconds to stabilize the air pressure in the infusion pump pipeline.

[0073] S5: Test. After the pressure maintenance is completed, the air leakage tester conducts a continuous air pressure test on the pressure in the infusion pump pipeline for 4 to 5 seconds through the detection interface. If the air pressure in the infusion pump pipeline decreases and the pressure decrease value exceeds the set leakage upper limit of 80pa, the air leakage tester will automatically determine that the infusion pump pipeline is leaking, make a corresponding mark and sound an alarm.

[0074] S6: Exhaust. After the test is completed, the air leakage tester drives the second telescopic cylinder and the third telescopic cylinder to retract. As the second telescopic cylinder and the third telescopic cylinder retract, the dosing tee and the precision filter in the infusion pump pipeline are reconnected to the atmosphere, and the gas in the infusion pump pipeline is discharged; at the same time, the air leakage tester also synchronously drives the first telescopic cylinder to retract, and the first telescopic cylinder drives the plug to withdraw from the drug outlet end;

[0075] S7: Unloading. Workers store the infusion pump tubing marked as leaking separately and pack the normal infusion pump tubing neatly to facilitate its transfer to the next workstation, while preparing for the next infusion pump tubing inspection.

[0076] S8: Reset. The first telescopic cylinder is restored to its initial state under the drive of the air leakage tester, and the plug is extended to the workbench again for the next leakage test.

[0077] It should be noted that during the test, the pressure changes in the infusion pump pipeline at each stage are as follows: Figure 8 shown.

Claims

1. A leak detection device for an infusion pump pipeline, characterized in that: include Workbench; at least one set A first plugging component is arranged on a workbench to plug the drug outlet end of the infusion pump pipeline; The limiting assembly is arranged on the workbench in one-to-one correspondence with the first blocking assembly, and all non-catheter components of the infusion pump pipeline except the drug outlet end are placed in the limiting assembly at a limited position; The second plugging component is arranged on the workbench and abuts against the connection end of the dosing tee during leak detection; The third plugging component is arranged on the workbench and is plugged on the dosing end of the dosing tee during leak detection; The air leakage tester is electrically controlled and connected to the first plugging component, the second plugging component, and the third plugging component respectively. During leak detection, a detection gas with a fixed air pressure is filled into the infusion pump pipeline through the second plugging component to determine whether there is a leak in the infusion pump pipeline; A pressure regulating filter is arranged in the workbench and connected to the air inlet ends of the first plugging component, the second plugging component and the third plugging component; The limiting component includes a first holder fixed on the workbench, and a first placement groove adapted to the dosing tee is provided in the first holder. After the dosing tee is placed in the first placement groove, the connecting end and the dosing end are exposed from the first holder, and a first conduit discharge groove is also provided on the side of the first placement groove facing away from the connecting end; the third blocking component includes a third telescopic cylinder, and the third telescopic cylinder is transmission-connected to the first sealing member on the dosing end so as to be sealably abutted.

2. A leak detection device for an infusion pump pipeline as claimed in claim 1, characterized in that: The first blocking component comprises a first telescopic cylinder longitudinally arranged in the workbench, the telescopic rod of the first telescopic cylinder is transmission-connected to a plug, and the plug slides through the workbench and extends above the workbench.

3. A leak detection device for an infusion pump pipeline as claimed in claim 1, characterized in that: The second sealing component includes a second telescopic cylinder fixed on the workbench, the second telescopic cylinder is transmission-connected to a slider, an air duct is arranged in the slider, the air duct has a first end and a second end, the first end is connected to the air leakage testing machine, and the second end is connected to the connecting end after the slider abuts against the connecting end, and a sealing ring coaxial with the second end is also arranged on the surface of the slider.

4. A leak detection device for an infusion pump pipeline as claimed in claim 1, characterized in that: The limiting assembly also includes a second clamping seat fixed on the workbench, in which a second placement groove adapted to the precision filter is provided, and second duct discharge grooves are respectively provided at both ends of the second placement groove; the third blocking assembly is also provided with a second sealing member transmission-connected to the third telescopic cylinder, and the third telescopic cylinder drives the second sealing member to block the air window of the precision filter.

5. A leak detection device for an infusion pump pipeline as claimed in claim 4, characterized in that: The limiting component also includes a third holder fixed on the workbench, a third placement slot adapted to the additional medicine bag is provided in the third holder, and third catheter discharge slots are respectively provided at both ends of the third placement slot; a limiting column transmission-connected to the third telescopic cylinder is correspondingly provided in the third blocking component, and the third telescopic cylinder drives the limiting column to slide into the third placement slot, leaving a gap between the rear end surface and the additional medicine bag for the additional medicine bag to swell to a working state.

6. A leak detection device for an infusion pump pipeline as claimed in claim 1, characterized in that: Grating detection mechanisms are arranged on both sides of the workbench, the grating detection mechanisms are located between the second blocking component and the worker, and the grating detection mechanisms are electrically connected to the air leakage tester.

7. A leak detection device for an infusion pump pipeline as claimed in claim 1, characterized in that: The air leakage tester is provided with a start switch, which is fixed on a workbench and is a two-hand start switch.

8. The leak detection device for an infusion pump pipeline according to claim 1, characterized in that: The air inlet ends of the air leakage tester and the pressure regulating filter are connected to an air dryer, and the air inlet end of the air dryer is connected to an air filter.

9. A leak detection method using the infusion pump pipeline leak detection device according to any one of claims 1 to 8, characterized in that: include S1: Preparation for pipeline placement, seal the drug outlet end of the infusion pump pipeline on the plug of the first plugging component, place the drug-adding tee in the first placement slot of the first holder without moving, and ensure that the connection end and the drug-adding end of the drug-adding tee are exposed outside the first holder, and at this time, the catheter connected to the drug-adding tee is led out through the first catheter discharge slot; if the infusion pump pipeline is also equipped with a precision filter and an additional drug bag, the staff will place the precision filter horizontally in the second placement slot and the catheters at both ends of the precision filter will be led out through the second catheter discharge slot, and the additional drug bag will be placed squarely in the third placement slot, and the catheters at both ends of the additional drug bag will be led out through the third catheter discharge slot; S2: Blocking and limiting. The staff presses two start switches with both hands at the same time to activate the air leakage tester. The air leakage tester drives the second telescopic cylinder and the third telescopic cylinder to extend synchronously. The second telescopic cylinder drives the slider and finally makes the sealing ring on the slider abut against the connection end. The air leakage tester is then connected to the infusion pump pipeline. The first sealing member is blocked on the dosing end of the dosing tee under the drive of the third telescopic cylinder. If the infusion pump pipeline is equipped with a precision filter and an additional medicine bag, the second sealing member and the limiting column arranged on the third telescopic cylinder will drop synchronously with the first sealing member. Finally, the second sealing member blocks the air window of the precision filter, and the limiting column is suspended 0.3 to 0.5 mm above the additional medicine bag. S3: Inflation. The air leakage tester continuously inflates the infusion pump pipeline for 4-5 seconds to raise the air pressure in the infusion pump pipeline to 80kpa. At this time, the precision filter and the additional medicine bag in the infusion pump pipeline are also filled with the test gas of the same air pressure. In addition, due to the restriction of the third holder and the limiting column, the additional medicine bag presents a bulging state similar to that during the infusion of the drug solution after inflation. S4: Maintaining pressure. After the inflation is completed, the air leakage tester stops inflating the infusion pump pipeline and maintains the pressure for 6 to 8 seconds to stabilize the air pressure in the infusion pump pipeline. S5: Test. After the pressure maintenance is completed, the air leakage tester conducts a continuous air pressure test on the pressure in the infusion pump pipeline for 4 to 5 seconds through the detection interface. If the air pressure in the infusion pump pipeline decreases and the pressure decrease value exceeds the set leakage upper limit of 80pa, the air leakage tester will automatically determine that the infusion pump pipeline is leaking, make a corresponding mark and sound an alarm. S6: Exhaust. After the test is completed, the air leakage tester drives the second and third telescopic cylinders to reset, the drug-adding tee and precision filter are connected to the atmosphere again, and the gas in the infusion pump pipeline is discharged; at the same time, the air leakage tester also synchronously drives the first telescopic cylinder to retract, and the first telescopic cylinder drives the plug to withdraw from the drug outlet end; S7: Unloading. Workers store the infusion pump tubing marked as leaking separately and pack the normal infusion pump tubing neatly to facilitate its transfer to the next workstation, while preparing for the next infusion pump tubing inspection. S8: Reset. The first telescopic cylinder is restored to its initial state under the drive of the air leakage tester, and the plug is extended to the workbench again for the next leakage test.

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