Breathing machine off-line training device
By designing a ventilator weaning training device, adjusting the airflow resistance and humidified/heated gas, the problem of the inability to adjust the intraoral cannula in existing technologies is solved, improving the effect and comfort of patients' respiratory muscle training and promoting the recovery of spontaneous breathing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI EAST HOSPITAL EAST HOSPITAL TONGJI UNIV SCHOOL OF MEDICINE
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-05
AI Technical Summary
Existing medical respiratory training cannulas have a simple structure, lacking flexible pressure adjustment and failing to meet the individual needs of different patients.
A ventilator weaning training device was designed, comprising an oral plug, a connecting tube, a breathing regulation valve, and a disposable heat and moisture exchanger. The resistance of the breathing airflow is adjusted by adjusting the valve handle, and the gas is humidified and heated by the disposable heat and moisture exchanger to ensure that the gas humidity and temperature are suitable.
It enables the adjustment of respiratory airflow resistance according to the patient's condition, improves respiratory muscle endurance and strength, avoids the loss of lung cilia caused by dry air, and promotes the recovery of spontaneous breathing in patients.
Smart Images

Figure CN224194035U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the medical field, and in particular to a ventilator weaning training device. Background Technology
[0002] Ventilators are commonly used medical devices in intensive care units (ICUs) to assist or replace patients' respiratory function. However, prolonged use of ventilators can lead to patient dependence and hinder the recovery of their spontaneous breathing ability. Therefore, ventilator weaning training is a crucial step in helping patients gradually wean off the ventilator.
[0003] Spontaneous breathing relies on intact respiratory muscles that can expand and contract the lungs. Some patients, due to their own reasons, have insufficient respiratory muscle strength, resulting in poor expulsion of carbon dioxide and inhalation of oxygen, leading to hypoxia. Therefore, they must use a ventilator. However, long-term ventilator use has significant side effects, such as pneumonia, infection, obstruction of the oral endotracheal tube, and aspiration. It may also require tracheotomy. Therefore, before weaning a patient off the ventilator, weaning training is necessary to help the patient's respiratory muscles recover and regain full function, enabling spontaneous breathing.
[0004] Common training methods for normal people include blowing up balloons, blowing out candles, blowing out paper strips, etc. The principle of respiratory muscle training is to increase the resistance during exhalation, help the respiratory muscles exert force, and improve muscle endurance. Existing medical respiratory training oral intubation tubes have a simple structure, cannot flexibly adjust pressure, and cannot be used flexibly according to the patient's actual situation.
[0005] Based on this, we propose a ventilator weaning training device. Utility Model Content
[0006] To address the technical problem that existing medical respiratory training cannulas have simple structures and cannot provide flexible pressure adjustment, this invention provides a ventilator weaning training device.
[0007] This utility model is achieved by the following technical solution: a ventilator weaning training device, including an oral plug, which is connected to the patient's mouth;
[0008] A connecting tube, one end of which is connected to a plug, and a breathing regulating valve is connected to the connecting tube;
[0009] A breathing regulator valve is used to adjust the resistance to breathing airflow. The breathing regulator valve includes a connecting seat, a limit groove plate connected to the top of the connecting seat, a rotating plate snapped onto the top of the limit groove plate, a valve handle fixedly connected to the outer edge of the rotating plate, an adjusting plate connected to the inner side of the rotating plate, and gas flow holes opened on the surface of the connecting seat.
[0010] The patient connects to the device via a plug, and the airflow passes through a connecting tube into the breathing regulator valve. The breathing regulator valve is existing technology; medical staff can adjust it according to the patient's specific condition. By turning the valve handle, the staff deflects a connected rotating plate, which in turn moves an adjusting plate, thus opening and closing the gas flow orifice to adjust the resistance to the airflow. Increasing the resistance during exhalation helps the patient exercise their respiratory muscles, improving muscle endurance and strength.
[0011] A disposable heat and moisture exchanger, installed on the connecting pipe, is used to humidify and heat the breathing gas. A flow port, also located on the disposable heat and moisture exchanger, is used for gas flow.
[0012] As a further optimization of this utility model, the plug is made of flexible material to improve patient comfort.
[0013] As a further optimization of this utility model, a breathing regulating valve is installed inside the connecting pipe to control the flow of breathing gas.
[0014] As a further optimization of this utility model, the rotating plate is generally in the shape of a disc, and a circular area is hollowed out in the central area of the rotating plate. The gas flow hole opened on the surface of the connecting seat is located in the circular area hollowed out in the central area of the rotating plate, and the adjusting plate opens and closes the gas flow hole.
[0015] As a further optimization of this utility model, when the breathing airflow passes through the connecting tube, the gas is humidified and heated by a disposable heat and moisture exchanger to ensure that the gas inhaled by the patient maintains a suitable humidity and temperature, and to recover the temperature and humidity in the exhaled gas, so as to ensure that the patient will not lose the function of the lung cilia due to dry air when breathing through the tube, and that the sputum will not be too dry to be coughed up.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] 1. This utility model allows medical staff to adjust the breathing regulating valve according to the patient's specific condition, thereby adjusting the resistance to airflow. By increasing the resistance during exhalation, it helps patients exercise their respiratory muscles, improving muscle endurance and strength, and better adapting to the different needs of different patients.
[0018] 2. The gas in this invention is humidified and heated by a disposable heat and moisture exchanger to ensure that the gas inhaled by the patient maintains a suitable humidity and temperature, and recovers the temperature and humidity in the exhaled gas. This ensures that the patient will not lose the function of the lung cilia due to dry air when breathing through a tube, and that the sputum will not be too dry to be coughed up. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This utility model Figure 1 Diagram of the split state of the middle structure;
[0021] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure of region A in the middle;
[0022] Figure 4 This is a schematic diagram of the connection structure of the breathing regulating valve of this utility model.
[0023] Explanation of key symbols:
[0024] 1. Plug; 2. Connecting pipe; 3. Breathing regulating valve; 31. Connecting seat; 32. Limiting groove plate; 33. Rotating plate; 34. Valve handle; 35. Adjusting plate; 36. Gas flow hole; 4. Disposable heat and humidity exchanger; 5. Flow port. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0026] Example 1:
[0027] Please combine Figures 1-4 This embodiment proposes a ventilator weaning training device, including an oral plug 1, which is connected to the patient's mouth;
[0028] It should be noted that the plug 1 is made of flexible material.
[0029] Connecting tube 2, one end of connecting tube 2 is connected to port plug 1, and a breathing regulating valve 3 is connected to connecting tube 2;
[0030] Breathing regulator valve 3 is used to adjust the resistance to breathing airflow. Breathing regulator valve 3 is located inside connecting pipe 2 to control the flow of breathing gas.
[0031] The breathing regulating valve 3 includes a connecting seat 31, a limiting groove plate 32 connected above the connecting seat 31, a rotating plate 33 snapped onto the upper part of the limiting groove plate 32, a valve handle 34 fixedly connected to the outer edge of the rotating plate 33, an adjusting plate 35 connected to the inner side of the rotating plate 33, and a gas flow hole 36 opened on the surface of the connecting seat 31.
[0032] It should be noted that the rotating plate 33 is generally disc-shaped, and the central area of the rotating plate 33 has a hollowed-out circular area. The gas flow hole 36 opened on the surface of the connecting seat 31 is located in the central area of the rotating plate 33 with a hollowed-out circular area. The adjusting plate 35 opens and closes the gas flow hole 36.
[0033] Specifically, the patient connects to the device via the plug 1, and the airflow passes through the connecting tube 2 into the breathing regulating valve 3. The breathing regulating valve 3 is existing technology; medical staff can adjust it according to the patient's specific condition. By rotating the valve handle 34, the staff deflects the connected rotating plate 33, which in turn moves the adjusting plate 35. The adjusting plate 35 then opens and closes the gas flow port 36, thereby adjusting the resistance to the airflow. By increasing the resistance during exhalation, it helps the patient exercise their respiratory muscles, improving muscle endurance and strength.
[0034] A disposable heat and moisture exchanger 4 is installed on the connecting pipe 2 and is used to humidify and heat the breathing gas. A flow port 5 is installed on the disposable heat and moisture exchanger 4 and is used for gas flow.
[0035] More specifically, as the airflow passes through the connecting tube 2, the gas is humidified and heated by the disposable heat and moisture exchanger 4 to ensure that the gas inhaled by the patient maintains a suitable humidity and temperature, and to recover the temperature and humidity in the exhaled gas, so that the patient will not lose the function of the lung cilia due to dry air when breathing through the tube, and the sputum will not be too dry to cough up.
[0036] Specific implementation steps of this utility model:
[0037] The patient connects to the device via plug 1, and the airflow passes through connecting tube 2 into breathing regulating valve 3. Breathing regulating valve 3 is existing technology; medical staff can adjust it according to the patient's specific condition. By rotating valve handle 34, the staff deflects a connected rotating plate 33, which in turn moves adjusting plate 35. Adjusting plate 35 then opens and closes the gas flow port 36, thereby adjusting the resistance to airflow. By increasing resistance during exhalation, it helps the patient exercise their respiratory muscles, improving muscle endurance and strength.
[0038] Gas humidification and heating: When the breathing air passes through the connecting tube 2, the gas is humidified and heated by the disposable heat and moisture exchanger 4 to ensure that the gas inhaled by the patient maintains a suitable humidity and temperature, and to recover the temperature and humidity in the exhaled gas. This ensures that the patient will not lose the function of the lung cilia due to dry air when breathing through the tube, and that the sputum will not be too dry to be coughed up.
[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A ventilator weaning training device, characterized in that, include: Mouth plug (1), which is connected to the patient's mouth; A connecting tube (2) is connected at one end to a plug (1), and a breathing regulating valve (3) is connected to the connecting tube (2). Breathing regulating valve (3), the breathing regulating valve (3) is used to regulate the resistance of breathing airflow; A disposable heat and humidity exchanger (4) is installed on the connecting pipe (2) for humidifying and heating breathing gas; A flow port (5) is provided on a disposable heat and humidity exchanger (4) for the flow of gas; The breathing regulating valve (3) includes a connecting seat (31), a limiting groove plate (32) is connected above the connecting seat (31), a rotating plate (33) is snapped above the limiting groove plate (32), a valve handle (34) is fixedly connected to the outer edge of the rotating plate (33), an adjusting plate (35) is connected to the inner side of the rotating plate (33), and a gas flow hole (36) is opened on the surface of the connecting seat (31).
2. The ventilator weaning training device as described in claim 1, characterized in that, The plug (1) is made of flexible material.
3. The ventilator weaning training device as described in claim 1, characterized in that, The breathing regulating valve (3) is located inside the connecting pipe (2) to control the flow of breathing gas.
4. The ventilator weaning training device as described in claim 1, characterized in that, The rotating plate (33) is generally disc-shaped. A circular area is hollowed out in the center of the rotating plate (33). The gas flow hole (36) on the surface of the connecting seat (31) is located in the circular area hollowed out in the center of the rotating plate (33). The adjusting plate (35) opens and closes the gas flow hole (36).