Hemodialyzer air tightness detection device based on inflation pressure maintaining

Abstract

The utility model discloses a hemodialyzer air tightness detection device based on inflation pressure maintaining, and relates to the technical field of air tightness detection devices. The air tightness detection device comprises an air tightness detector. The air tightness detector is provided with a one-way circulation mechanism and a rapid installation mechanism. A hemodialyzer is arranged on the right side of the air tightness detector, the right side of the hemodialyzer is in a sealed state, the one-way circulation mechanism comprises a first one-way circulation assembly and a second one-way circulation assembly, and the first one-way circulation assembly comprises an air inlet pipe arranged on the right side of the air tightness detector in a communicating mode; the left side of the hemodialyzer communicates with a connecting pipe, and the right side of the air inlet pipe extends into the connecting pipe. Through the arrangement of the one-way circulation mechanism, the problems that when the inflation pressure is large, the gas backflow phenomenon possibly occurs, the amount of gas actually inflated into the dialyzer is unstable, accurate establishment of the pressure is affected, and the accuracy of a detection result is greatly reduced are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of air tightness testing devices, and in particular relates to an air tightness testing device for a hemodialysis machine based on inflation and pressure maintenance. Background Technology

[0002] Hemodialysis is an important renal replacement therapy widely used in the treatment of diseases such as kidney failure. As the core component of the hemodialysis process, the performance of the hemodialyzer directly affects the treatment effect and patient safety. The hemodialyzer must have good airtightness to prevent blood leakage and external contaminants from entering the blood and causing serious medical accidents. Therefore, it is necessary to use an airtightness testing device based on inflation and pressure to test the airtightness of the hemodialyzer.

[0003] However, existing hemodialysis machine airtightness testing devices based on inflation and pressure holding may experience gas backflow when the inflation pressure is high. This can lead to an unstable amount of gas actually being injected into the dialyzer, affecting the accurate establishment of pressure and thus significantly reducing the accuracy of the test results. Utility Model Content

[0004] The purpose of this invention is to provide a hemodialysis machine airtightness detection device based on inflation and pressure holding. By setting a one-way flow mechanism, it solves the problem that when the inflation pressure is high, gas backflow may occur, which leads to unstable gas volume actually injected into the dialyzer, affecting the accurate establishment of pressure and thus greatly reducing the accuracy of the test results.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a hemodialysis machine airtightness detection device based on inflation and pressure holding, including an airtightness detector, which is equipped with a one-way flow mechanism and a quick installation mechanism.

[0007] A hemodialyzer is located on the right side of the airtightness detector. The right side of the hemodialyzer is sealed. The one-way flow mechanism includes one-way flow component one and one-way flow component two. One-way flow component one includes an air inlet pipe connected to the right side of the airtightness detector. A connecting pipe is connected to the left side of the hemodialyzer. The right side of the air inlet pipe extends into the connecting pipe. A sealing gasket is fitted on the outer wall of the air inlet pipe. The right side of the sealing gasket contacts the connecting pipe. A cross support frame is fixedly connected to the inner wall of the air inlet pipe.

[0008] Furthermore, an adapter ring is fixedly connected to the inner wall of the intake pipe, and a piston is slidably connected to the inner wall of the adapter ring.

[0009] Furthermore, the second unidirectional flow component includes a telescopic rod fixedly connected to the left side of the cross support frame. The left side of the telescopic rod is fixedly connected to the piston. A spring is sleeved on the outer wall of the telescopic rod. The left side of the spring is fixedly connected to the piston, and the right side of the spring is fixedly connected to the cross support frame.

[0010] Furthermore, the quick installation mechanism includes quick installation component one and quick installation component two. Quick installation component one includes two semi-circular fixing rings sleeved on the outer wall of the air intake pipe and the connecting pipe. The rear sides of the two semi-circular fixing rings are hinged together, and a sleeve is fixedly connected to the front side of the upper semi-circular fixing ring.

[0011] Furthermore, a circular slider is slidably connected to the inner wall of the sleeve, and a limiting rod is fixedly connected to the rear side of the circular slider. The rear side of the limiting rod slides out of the sleeve and slides through the connection of the two semi-circular fixing rings.

[0012] Furthermore, the quick-installation component two includes a pull rod fixedly connected to the front side of a circular slider, the front side of the pull rod slidingly extending to the outside of the sleeve, a spring two being sleeved on the outer wall of the pull rod, the rear side of the spring two being fixedly connected to the circular slider, and the front side of the spring two being fixedly connected to the sleeve.

[0013] Furthermore, a handle is fixedly connected to the front extension of the pull rod, and two washers are fixedly connected to the rear side of the handle.

[0014] This utility model has the following beneficial effects:

[0015] 1. By setting a one-way flow mechanism, when gas is injected into the hemodialyzer, the gas pressure will push the piston to the right, creating a gap between it and the adapter ring. At this time, the telescopic rod and spring one are in a compressed state, and the gas enters the hemodialyzer through this gap. When the injection stops, the piston will be reset under the elastic force of spring one, thus forming a gas transmission environment that is open in the forward direction and closed in the reverse direction. This can effectively prevent the gas that has entered the dialyzer from flowing back out, ensuring that the gas pressure will not fluctuate due to backflow during the test, thereby improving the accuracy of the test. It can also better maintain the pressure stability inside the dialyzer during the pressure holding stage, making it easier to accurately observe pressure changes and judge the airtightness of the dialyzer.

[0016] 2. By setting up a quick installation mechanism, when it is necessary to test the sealing performance of the hemodialysis machine, two semi-circular fixing rings can be placed on the inlet pipe and the connecting pipe. Pulling the handle will cause the handle to drive the lever, which in turn moves the limit rod on the circular slider forward. At this time, the second spring is compressed. Then, the connection points of the two semi-circular fixing rings come into contact, and the handle is released. At this time, the circular slider will move the limit rod backward under the elastic force of the second spring, fixing the two semi-circular fixing rings together, thereby connecting the inlet pipe and the connecting pipe together. This allows the inlet pipe and the connecting pipe to be connected in a short time, reducing the difficulty of operation, improving the efficiency of installation and connection, saving a lot of time and labor costs, and ensuring that the connection between the inlet pipe and the connecting pipe is firm and reliable, and will not easily loosen or fall off due to vibration, pressure changes or other external forces.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the rear cross-sectional structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the left sectional view of the present invention;

[0022] Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0023] Figure 5 This utility model Figure 3 A magnified structural diagram of B in the diagram.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Air tightness tester; 101. Hemodialyzer; 102. Sealing gasket; 2. One-way flow mechanism; 21. One-way flow component one; 211. Air inlet pipe; 212. Connecting pipe; 213. Cross support frame; 214. Adaptor ring; 215. Piston; 22. One-way flow component two; 221. Telescopic rod; 222. Spring one; 3. Quick installation mechanism; 31. Quick installation component one; 311. Semi-circular fixing ring; 312. Sleeve; 313. Circular slider; 314. Limiting rod; 32. Quick installation component two; 321. Pull rod; 322. Spring two; 323. Handle; 324. Gasket. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5As shown, this utility model is an airtightness testing device for a hemodialysis machine based on inflation and pressure maintenance. It includes an airtightness testing instrument 1, which is equipped with a one-way flow mechanism 2 and a quick-installation mechanism 3. A hemodialysis machine 101 is located on the right side of the airtightness testing instrument 1, and the right side of the hemodialysis machine 101 is sealed. The one-way flow mechanism 2 includes a one-way flow component 21 and a two-way flow component 22. The one-way flow component 21 includes an air inlet pipe 211 connected to the right side of the airtightness testing instrument 1. A connecting pipe 212 is connected to the left side of the hemodialysis machine 101. The right side of the air inlet pipe 211 extends into the connecting pipe 212. A sealing gasket 102 is fitted on the outer wall of the air inlet pipe 211, and the right side of the sealing gasket 102 connects to the connecting pipe 212. The dialyzer has 12 phase contacts. A cross support frame 213 is fixedly connected to the inner wall of the inlet pipe 211. An adapter ring 214 is fixedly connected to the inner wall of the inlet pipe 211. A piston 215 is slidably connected to the inner wall of the adapter ring 214. The one-way flow assembly 22 includes a telescopic rod 221 fixedly connected to the left side of the cross support frame 213. The left side of the telescopic rod 221 is fixedly connected to the piston 215. A spring 222 is sleeved on the outer wall of the telescopic rod 221. The left side of the spring 222 is fixedly connected to the piston 215, and the right side of the spring 222 is fixedly connected to the cross support frame 213. By setting the one-way flow mechanism 2, the backflow of gas that has entered the dialyzer can be effectively prevented, ensuring that the gas pressure will not fluctuate due to backflow during the detection process. This improves the accuracy of detection and better maintains pressure stability within the dialyzer during the pressure holding phase, facilitating accurate observation of pressure changes and assessment of the dialyzer's airtightness. The quick-installation mechanism 3 includes a quick-installation component one 31 and a quick-installation component two 32. Quick-installation component one 31 includes two semi-circular fixing rings 311 fitted onto the outer walls of the inlet pipe 211 and the connecting pipe 212. The rear sides of the two semi-circular fixing rings 311 are hinged together. A sleeve 312 is fixedly connected to the front side of the upper semi-circular fixing ring 311. A circular slider 313 is slidably connected to the inner wall of the sleeve 312. A limiting rod 314 is fixedly connected to the rear side of the circular slider 313. The rear side of the limiting rod 314 slidably extends outside the sleeve 312. The side-sliding mechanism passes through the connection of two semi-circular fixing rings 311. The quick-installation component 32 includes a circular slider 313 with a pull rod 321 fixedly connected to its front side. The front side of the pull rod 321 extends slidably to the outside of the sleeve 312. A second spring 322 is fitted onto the outer wall of the pull rod 321. The rear side of the second spring 322 is fixedly connected to the circular slider 313, and the front side of the second spring 322 is fixedly connected to the sleeve 312. A handle 323 is fixedly connected to the front extension of the pull rod 321, and two washers 324 are fixedly connected to the rear side of the handle 323. By setting up the quick-installation mechanism 3, the intake pipe and connecting pipe can be connected together in a short time, reducing the difficulty of operation, improving the efficiency of installation and connection, and saving a significant amount of time and labor costs.It also ensures a secure and reliable connection between the intake pipe and the connecting pipe, preventing them from easily loosening or detaching due to vibration, pressure changes, or other external forces.

[0028] A specific application of this embodiment is as follows: In use, first insert the air inlet pipe 211 of the airtightness tester 1 into the connecting pipe 212 of the hemodialysis machine 101. Then, place the two semi-circular fixing rings 311 onto the air inlet pipe 211 and the connecting pipe 212. Pull the handle 323; the handle 323 drives the pull rod 321, which in turn moves the limiting rod 314 on the circular slider 313 forward. At this time, the second spring 322 is compressed. Next, bring the connection points of the two semi-circular fixing rings 311 into contact and release the handle 323. The circular slider 313 will then move forward under the elastic force of the second spring 322. The moving limit rod 314 moves backward, fixing the two semi-circular fixing rings 311 together, thereby connecting the intake pipe 211 and the connecting pipe 212. This allows the intake pipe and connecting pipe to be connected in a short time, reducing the difficulty of operation and improving the efficiency of installation and connection. It can save a lot of time and labor costs, and also ensure that the connection between the intake pipe and the connecting pipe is firm and reliable, and will not easily loosen or fall off due to vibration, pressure changes or other external forces. After the connection is completed, the airtightness tester 1 can be started. The airtightness tester 1 is model SLZ-4. The airtightness tester 1 connects to a gas source input interface on the rear panel, allowing gas within a certain pressure range to be supplied. The pressure is adjusted using a pressure regulating valve to inject gas at a specific pressure into the hemodialyzer 101. The pressure changes are then monitored. If the product has good airtightness, the pressure should be relatively stable during the pressure holding phase. If leakage occurs, the pressure will gradually decrease. By monitoring and analyzing the pressure changes, the airtightness of the tested product is determined to be within acceptable limits. When gas is injected into the hemodialyzer 101, this pressure pushes the piston 215 to the right, aligning it with the mating ring 214. A gap is created, at which point the telescopic rod 221 and spring 222 are compressed, and gas enters the hemodialyzer 101 through this gap. When the injection stops, the piston 215 is reset by the elastic force of the spring 222, thus forming a gas transmission environment that is open in the forward direction but closed in the reverse direction. This effectively prevents the gas that has entered the dialyzer from flowing back out, ensuring that the gas pressure does not fluctuate due to backflow during the test, thereby improving the accuracy of the test. It can also better maintain the pressure stability inside the dialyzer during the pressure holding stage, making it easier to accurately observe pressure changes and judge the airtightness of the dialyzer.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hemodialysis machine airtightness detection device based on inflation and pressure maintenance, comprising an airtightness detector (1), wherein the airtightness detector (1) is provided with a one-way flow mechanism (2) and a quick installation mechanism (3), Its characteristics are: A hemodialyzer (101) is provided on the right side of the airtightness tester (1). The right side of the hemodialyzer (101) is sealed. The one-way flow mechanism (2) includes one-way flow component one (21) and one-way flow component two (22). One-way flow component one (21) includes an air inlet pipe (211) connected to the right side of the airtightness tester (1). A connecting pipe (212) is provided on the left side of the hemodialyzer (101). The right side of the air inlet pipe (211) extends into the connecting pipe (212). A sealing gasket (102) is fitted on the outer wall of the air inlet pipe (211). The right side of the sealing gasket (102) is in contact with the connecting pipe (212). A cross support frame (213) is fixedly connected to the inner wall of the air inlet pipe (211).

2. The airtightness detection device for a hemodialysis machine based on inflation and pressure maintenance according to claim 1, characterized in that, An adapter ring (214) is fixedly connected to the inner wall of the air intake pipe (211), and a piston (215) is slidably connected to the inner wall of the adapter ring (214).

3. The airtightness detection device for a hemodialysis machine based on inflation and pressure maintenance according to claim 2, characterized in that, The second unidirectional flow component (22) includes a telescopic rod (221) fixedly connected to the left side of the cross support frame (213). The left side of the telescopic rod (221) is fixedly connected to the piston (215). A spring (222) is sleeved on the outer wall of the telescopic rod (221). The left side of the spring (222) is fixedly connected to the piston (215), and the right side of the spring (222) is fixedly connected to the cross support frame (213).

4. The airtightness detection device for a hemodialysis machine based on inflation and pressure maintenance according to claim 3, characterized in that, The quick installation mechanism (3) includes quick installation component one (31) and quick installation component two (32). The quick installation component one (31) includes two semi-circular fixing rings (311) sleeved on the outer wall of the air intake pipe (211) and the connecting pipe (212). The rear sides of the two semi-circular fixing rings (311) are hinged together, and a sleeve (312) is fixedly connected to the front side of the upper semi-circular fixing ring (311).

5. The airtightness detection device for a hemodialysis machine based on inflation and pressure maintenance according to claim 4, characterized in that, A circular slider (313) is slidably connected to the inner wall of the sleeve (312). A limiting rod (314) is fixedly connected to the rear side of the circular slider (313). The rear side of the limiting rod (314) slides out of the sleeve (312) and slides through the connection of the two semi-circular fixing rings (311).

6. The airtightness detection device for a hemodialysis machine based on inflation and pressure maintenance according to claim 5, characterized in that, The quick-installation component 2 (32) includes a circular slider (313) with a pull rod (321) fixedly connected to the front side. The front side of the pull rod (321) slides out to the outside of the sleeve (312). A spring 2 (322) is sleeved on the outer wall of the pull rod (321). The rear side of the spring 2 (322) is fixedly connected to the circular slider (313), and the front side of the spring 2 (322) is fixedly connected to the sleeve (312).

7. The airtightness detection device for a hemodialysis machine based on inflation and pressure maintenance according to claim 6, characterized in that, A handle (323) is fixedly connected to the front extension of the pull rod (321), and two washers (324) are fixedly connected to the rear side of the handle (323).

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