Breathing machine air path sealing detection device
By designing a ventilator airway sealing detection device with a support base, movable base, and testing components, and utilizing an adjustable connecting slide rod and rubber plug, combined with a pressure stabilizing balloon and pressure test gauge, the contamination and limitations of existing ventilator airway detection technologies are solved, enabling rapid and accurate sealing judgment.
Patent Information
- Application Number
- CN202520608214.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-02
AI Technical Summary
Existing methods for testing the airway tightness of ventilators are prone to tubing contamination and are difficult to completely detect, resulting in significant limitations in testing.
A ventilator airway sealing detection device was designed, including a support base, a movable base, and a test component. The device uses an adjustable connecting slide rod, a rubber plug, and a pressure-stabilizing balloon. By pumping air through the air pump and observing the expansion of the pressure-stabilizing balloon, leakage can be determined. The sealing performance is then determined by combining the pressure test gauge readings.
It enables rapid, intuitive, and accurate testing of ventilator airway sealing, avoiding tubing contamination and improving the convenience and accuracy of testing.
Smart Images

Figure CN223925950U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilator airway detection technology, and in particular to a ventilator airway sealing detection device. Background Technology
[0002] A ventilator is a device that can replace, control, or alter a person's normal physiological breathing, increase lung ventilation, improve respiratory function, reduce respiratory work consumption, and conserve cardiac reserve capacity. Existing ventilators typically undergo airtightness testing of their airways during production or long-term use to ensure their effectiveness.
[0003] A search revealed that the document with announcement number "CN217765368U" mentions "This utility model provides an anesthesia breathing tubing airtightness testing device, including a box, a rotating shaft connected to one side of the top of the box, a top cover connected to one side of the rotating shaft, a sealing ring fixedly connected to the inner side of the top cover, a handle fixedly connected to the outer side of the top cover, an observation window fixedly connected to the front of the box, and tubing clamping devices connected to both sides of the inner wall of the box." This method tests the airtightness of the ventilator tubing by immersing it in liquid. However, this method requires the tubing to be submerged in water, which can easily cause contamination, and it is difficult to completely immerse the tubing in water during testing, thus limiting its effectiveness.
[0004] To address this issue, we provide a ventilator airway seal detection device. Utility Model Content
[0005] This application provides a ventilator airway sealing detection device, which solves the problems mentioned in the background art.
[0006] This application provides a ventilator airway sealing detection device, including a support base, a movable seat on the left side of the support base, and a test component on the upper side of the movable seat;
[0007] The test assembly includes a mounting bracket installed on the top of a support base. An air inlet pipe is provided on the left side of the top of the mounting bracket, and a plug is installed on the outside of the air inlet pipe. A fixing bracket is welded to the top of the movable base, and a connecting valve head is provided on the right side of the top of the fixing bracket. A test tube is connected to the right end of the connecting valve head.
[0008] Preferably, the support base has a sliding groove inside, and a connecting slide rod is welded to the right end of the movable base, and the connecting slide rod is slidably connected to the support base.
[0009] Preferably, an air pump is installed at the right end of the support base, and the air pump is connected to the air inlet pipe by a pipeline.
[0010] Preferably, the plug is made of rubber, the plug is fixedly connected to the air intake pipe, and the plug has a conical structure.
[0011] Preferably, the test tube and the connecting valve head are connected by a thread, and a plug is installed on the outside of the test tube.
[0012] Preferably, a connecting pipe is fixedly connected to the rear end of the connecting valve head, and a pressure-stabilizing balloon is installed at the end of the connecting pipe.
[0013] Preferably, a pressure test gauge is installed at the top of the connecting valve head, and the pressure test gauge is threadedly connected to the connecting valve head.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. By adjusting the extension length of the connecting slide rod, the distance between the movable seat and the support seat can be changed, making it convenient to use ventilator tubing of different lengths. At the same time, because the plug is made of rubber and has a conical structure, the plug can be tightly inserted into the ventilator tubing, thereby ensuring gas sealing.
[0016] 2. During the testing process, the pressure-stabilizing balloon inflates, continuously supplying pressure to the tubing after the air pump stops supplying air. Simultaneously, the balloon's expansion can be observed to determine if there are any leaks in the ventilator tubing. By observing the pressure gauge reading, if the balloon's expansion is stable and the gauge reading remains within a certain range, it indicates good sealing performance of the ventilator tubing; conversely, if the balloon expands too much or the reading is not within a certain range, it indicates a leak, requiring further inspection or replacement. This allows for quick and intuitive observation of the ventilator tubing's airtightness, improving the accuracy and speed of the testing. Attached Figure Description
[0017] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the implementation examples will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained from these drawings without any creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;
[0019] Figure 2 This is a schematic diagram of the cooperative structure of the support base, movable base, and connecting slide rod proposed in this utility model;
[0020] Figure 3 This is a schematic diagram of the mating structure of the movable seat and the test component proposed in this utility model;
[0021] Figure 4This is a schematic diagram of the mating structure of the support base and the test component proposed in this utility model.
[0022] In the diagram: 1. Support base; 2. Movable base; 3. Connecting slide bar; 4. Test assembly; 401. Mounting bracket; 402. Air inlet pipe; 403. Plug; 404. Air pump; 405. Fixing bracket; 406. Connecting valve head; 407. Test tube; 408. Connecting pipe; 409. Pressure stabilizing balloon; 410. Pressure test gauge. Detailed Implementation
[0023] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.
[0024] See Figure 1-4 A ventilator airway sealing detection device includes a support base 1, a movable seat 2 is provided on the left side of the support base 1, and a test component 4 is provided on the upper side of the movable seat 2.
[0025] The test assembly 4 includes a mounting bracket 401 installed on the top of the support base 1. An air inlet pipe 402 is provided on the left side of the top of the mounting bracket 401. A plug 403 is installed on the outside of the air inlet pipe 402. A fixed bracket 405 is welded to the top of the movable base 2. A connecting valve head 406 is provided on the right side of the top of the fixed bracket 405. A test tube 407 is connected to the right end of the connecting valve head 406.
[0026] In this utility model, the support base 1 has a sliding groove inside, and the right end of the movable base 2 is welded with a connecting slide rod 3. The connecting slide rod 3 and the support base 1 are slidably connected. By adjusting the extension length of the connecting slide rod 3, the distance between the movable base 2 and the support base 1 can be changed, which facilitates the use of ventilator tubing of different lengths.
[0027] In this utility model, an air pump 404 is installed on the right end of the support base 1. The air pump 404 is connected to the air inlet pipe 402 by a pipeline. The two ends of the ventilator pipeline to be tested are installed on the air inlet pipe 402 and the test tube 407. The air pump 404 sends gas into the ventilator pipeline, which improves the convenience of sealing test.
[0028] In this invention, the plug 403 is made of rubber and is fixedly connected to the air inlet tube 402. The plug 403 has a conical structure. Because the plug 403 is made of rubber and has a conical structure, the plug 403 can be tightly inserted into the ventilator tubing, thereby ensuring the gas seal and guaranteeing the accuracy of the test.
[0029] In this invention, the test tube 407 and the connecting valve head 406 are connected by a thread. A plug 403 is installed on the outside of the test tube 407. The ventilator tubing is connected to each testing component through the connecting valve head 406 to ensure the testing effect.
[0030] In this invention, a connecting pipe 408 is fixedly connected to the rear end of the connecting valve head 406, and a pressure-stabilizing balloon 409 is installed at the end of the connecting pipe 408. During the testing process, the pressure-stabilizing balloon 409 is inflated and expands, thereby continuously providing pressure to the inside of the pipeline after the air pump 404 stops supplying air. At the same time, it can be observed whether the expansion of the pressure-stabilizing balloon 409 decreases, thereby determining whether there is a leak in the ventilator pipeline.
[0031] In this invention, a pressure gauge 410 is installed at the top of the connecting valve head 406. The pressure gauge 410 and the connecting valve head 406 are connected by a thread. During testing, by observing the reading of the pressure gauge 410, if the pressure stabilizing balloon 409 expands stably and the reading of the pressure gauge 410 remains within a certain range, it indicates that the sealing performance of the ventilator tubing is good; otherwise, it indicates that there is a leakage problem and further inspection or replacement is required.
[0032] As can be seen from the above technical solution, in use, the first step is to install the device at the desired location, and then adjust the telescopic length of the connecting slide rod 3 to change the distance between the movable seat 2 and the support seat 1, facilitating the use of ventilator tubing of different lengths. The second step is to install both ends of the ventilator tubing to be tested onto the inlet tube 402 and the test tube 407. Because the plug 403 is made of rubber and has a conical structure, it can be tightly inserted into the ventilator tubing, ensuring gas sealing. The third step is to start the air pump 404 to deliver gas into the ventilator tubing for testing. During the process, the pressure-stabilizing balloon 409 inflates, thus continuously supplying pressure to the inside of the tubing after the air pump 404 stops supplying air. Simultaneously, the expansion of the pressure-stabilizing balloon 409 can be observed to determine if there is a leak in the ventilator tubing. Fourthly, by observing the reading of the pressure gauge 410, if the pressure-stabilizing balloon 409 expands stably and the reading of the pressure gauge 410 remains within a certain range, it indicates that the ventilator tubing has good sealing performance; otherwise, it indicates a leak problem, requiring further inspection or replacement. This completes the use of a ventilator airway sealing detection device.
[0033] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of this application is indicated by the claims.
[0034] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The above embodiments of this application do not constitute a limitation on the scope of protection of this application.
Claims
1. A breathing machine gas path seal detection device, comprising a support seat (1), characterized in that, The left side of the support base (1) is provided with a movable seat (2), and the upper side of the movable seat (2) is provided with a test assembly (4); The test assembly (4) comprises a mounting frame (401) mounted at the top end of the support base (1), the left side of the top end of the mounting frame (401) is provided with an air inlet pipe (402), the outer side of the air inlet pipe (402) is provided with a plug (403), the top end of the movable seat (2) is welded with a fixing frame (405), the right side of the top end of the fixing frame (405) is provided with a communication valve head (406), and the right end of the communication valve head (406) is connected with a test pipe (407).
2. The ventilator gaspath seal detection device of claim 1, wherein, The inside of the support base (1) is provided with a sliding groove, the right end of the movable seat (2) is welded with a connecting sliding rod (3), and the connecting sliding rod (3) and the support base (1) are in sliding connection.
3. The ventilator gaspath seal detection device of claim 1, wherein, The right end of the support base (1) is provided with an air pump (404), and the air pump (404) and the air inlet pipe (402) are connected through pipelines.
4. The ventilator gaspath seal detection device of claim 1, wherein, The plug (403) is made of rubber material, and the plug (403) and the air inlet pipe (402) are fixedly connected, and the plug (403) is in a conical structure.
5. The ventilator gaspath seal detection device of claim 1, wherein, The test pipe (407) and the communication valve head (406) are connected through threads, and the outer side of the test pipe (407) is provided with a plug (403).
6. The ventilator gaspath seal detection device of claim 1, wherein, The rear end of the communication valve head (406) is fixedly connected with a connecting pipe (408), and the tail end of the connecting pipe (408) is provided with a pressure stabilizing balloon (409).
7. The ventilator gaspath seal detection device of claim 1, wherein, The top end of the communication valve head (406) is provided with a pressure test table (410), and the pressure test table (410) and the communication valve head (406) are connected through threads.
Citation Information
Patent Citations
Airtightness detection device for anesthesia breathing pipeline
CN217765368U