A gas delivery tube and breathing mask for a breathing machine
By designing heating and condensate collection devices on the gas delivery pipe, the problems of inconvenient drainage and leakage of condensate in the gas delivery pipe are solved, achieving gas temperature stability and convenient condensate treatment, thus improving the patient's breathing effect and the reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO MINGZHOU HOSPITAL CO LTD
- Filing Date
- 2025-02-20
- Publication Date
- 2026-06-26
AI Technical Summary
The existing devices for collecting condensate on the gas pipeline cannot be installed stably, resulting in leakage. Furthermore, the condensate is difficult to drain, affecting the patient's breathing.
A structure including an air delivery tube body, a heating device, and a liquid collection device is designed. The air delivery tube body has a hollow airflow channel inside. The heating device is located on the side of the air delivery tube near the ventilator. The liquid collection device is located between the breathing mask and the heating device. The air delivery tube passes through the liquid collection device and is rotatably connected. The liquid collection device includes a collection chamber and a drainage component. The collection chamber has a through hole inside. The drainage component is located at the bottom of the collection chamber. An annular seal is slidably sealed to the outer wall of the air delivery tube.
It effectively reduces heat loss, ensures suitable gas temperature, facilitates the collection and treatment of liquid, reduces the risk of condensate backflow, improves patient breathing comfort and equipment reliability, and reduces maintenance work.
Smart Images

Figure CN224404124U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilator technology, and more specifically, to an air delivery tube and a breathing mask for a ventilator. Background Technology
[0002] Ventilators are essential for patients with impaired spontaneous breathing. They deliver oxygen to the lungs, assisting respiration and maintaining oxygen-carbon dioxide balance. It is a widely used device. A ventilator connects to a breathing mask worn by the patient via a tubing to enable normal breathing. However, existing tubing systems have condensation collection devices that are unstable during patient movement, leading to leakage at the connection point. Furthermore, the difficulty in draining condensation from inside the tubing further hinders effective breathing. Utility Model Content
[0003] This invention solves the problems of the inability to stably install the liquid accumulation device on the gas delivery pipe, resulting in liquid leakage, and the inconvenience of draining condensate from inside the gas delivery pipe, leading to poor respiratory effect for patients.
[0004] To address the aforementioned problems, this utility model provides an air delivery tube for a ventilator, connecting a breathing mask and the ventilator. The tube includes: an air delivery tube body, a heating device, and a liquid collection device. The air delivery tube body is hollow, serving as an airflow channel. The heating device is located on the side of the air delivery tube body closest to the ventilator and includes a heating component and an outer tubing. The heating component is located outside the air delivery tube body and is used to heat the flowing gas. The outer tubing is located outside the heating component and is used to reduce heat loss. The liquid collection device is located between the breathing mask and the heating device. The air delivery tube body passes through the liquid collection device and is rotatably connected to it, allowing the liquid collection device to rotate around the air delivery tube body, thus preventing the movement of the air delivery tube body from affecting the liquid collection device.
[0005] The technical effects achieved by adopting this solution are as follows: The design of the outer tubing significantly reduces heat loss from the heating components to the external environment, ensuring that the gas maintains a suitable temperature during delivery, thereby improving treatment comfort and effectiveness. The fluid collection device is located between the breathing mask and the heating device, with the main body of the gas delivery tube passing through it and rotatably connected to the fluid collection device, allowing the fluid collection device to rotate around the gas delivery tube without hindering its normal operation. This design facilitates the collection and treatment of fluid, avoids potential impacts on the fluid collection device due to gas delivery tube movement, and also reduces the risk of condensate flowing back into the ventilator or the patient's airway.
[0006] Furthermore, the liquid accumulation device includes a collection chamber and a drainage component. The collection chamber has a through hole through which the gas delivery pipe body passes. The drainage component is located at the bottom of the collection chamber and is used to control the discharge of the accumulated liquid.
[0007] The technical effects achieved by adopting this solution are as follows: The collection chamber has a through-hole for the gas delivery tube to pass through, ensuring that condensate can flow smoothly into the collection chamber. This prevents condensate from accumulating in the gas delivery tube, which could lead to poor breathing for the patient. A drainage component is located at the bottom of the collection chamber to control the drainage of accumulated fluid. This design allows medical staff to turn the drainage function on or off as needed, ensuring that accumulated fluid is removed in a timely and effective manner without affecting normal patient use or causing environmental pollution.
[0008] Furthermore, annular seals are provided at the through holes at both ends of the collection chamber, and the annular seals are slidably sealed to the outer wall of the gas transmission pipe body.
[0009] The technical benefits of this solution are as follows: The annular seal design effectively prevents condensate leakage from the through-holes at both ends of the collection chamber, ensuring that condensate only accumulates inside the collection chamber and is discharged through the drainage assembly. This avoids equipment damage or unnecessary risks to patients caused by condensate leakage. The excellent sealing performance reduces the frequency of inspections and maintenance due to leaks, thereby reducing the workload of medical personnel and improving the reliability and availability of the equipment.
[0010] Furthermore, the gas transmission pipe body includes an internal pipe, which is a section of the gas transmission pipe body located inside the collection chamber. The internal pipe is provided with at least one guide hole, which is used to guide condensate into the collection chamber.
[0011] The technical benefits of this solution include: because condensate is promptly directed and collected in the collection chamber, it avoids accumulation in the gas delivery tubing, thereby reducing potentially increased respiratory resistance. This is particularly important for patients dependent on ventilator support, as it helps maintain normal respiratory function and treatment effectiveness.
[0012] Furthermore, the side walls of the collection chamber are transparent, and the outer surface is marked with volume scale markings.
[0013] The technical effects achieved by adopting this solution are as follows: By designing a transparent collection chamber wall with volume scale markings, medical staff can easily monitor the amount of fluid in the collection chamber, understand the fluid situation in a timely manner, and take corresponding measures to drain the fluid, thereby ensuring the normal operation of the system.
[0014] Furthermore, the drainage component is a manually controlled valve to control the drainage of the collection chamber.
[0015] The technical effects achieved by adopting this solution are as follows: the drainage process can be better monitored and controlled through manual operation, reducing the risk of accidental leakage, which is especially important when handling liquids containing pathogens, thereby protecting the safety of patients and medical staff.
[0016] Furthermore, the heating component includes an electric heating film that is attached to the outer wall of the gas pipeline body.
[0017] The technical benefits of this solution include: the electric heating film provides uniform and efficient heating, ensuring that gas passing through the gas delivery pipe reaches the required temperature quickly, adapting to varying environmental conditions and guaranteeing temperature stability and consistency. Compared to traditional heating elements, the electric heating film is thinner and lighter, allowing it to fit snugly against the outer wall of the gas delivery pipe without compromising its flexibility. This results in minimal increase in volume or weight, maintaining overall portability and ease of use. The electric heating film can be customized to the specific shape of the gas delivery pipe, facilitating integration into existing gas delivery systems. Installation is relatively simple, and maintenance is convenient, reducing equipment complexity and maintenance costs.
[0018] Furthermore, the heating device includes a temperature sensor, which is located between the outer pipeline and the gas pipeline body.
[0019] The technical benefits of this solution include: real-time temperature monitoring, where temperature sensors help prevent overheating. If the temperature exceeds the safe range, the system can take immediate action to avoid harm to the patient or damage to the equipment. Dynamically adjusting the heating level based on actual needs helps save energy. When the desired temperature is reached, the system can reduce or stop heating, which not only reduces energy consumption but also extends the lifespan of the heating film and other components. Different patients or different environmental conditions may require different gas temperatures. This design allows the system to automatically adjust the heating level according to specific circumstances, enhancing the ventilator's adaptability to external changes and meeting diverse clinical needs.
[0020] To address the aforementioned issues, this utility model provides a breathing mask, including the aforementioned technical features of an air delivery tube for a ventilator. The breathing mask includes an air inlet, and one end of the air delivery tube is detachably connected to the air inlet.
[0021] The technical benefits of this solution include: By using a gas delivery tube with heating and condensation management functions, the temperature of the gas entering the breathing mask is ensured to be appropriate and free of condensation. This significantly improves patient comfort and reduces discomfort or potential respiratory problems caused by inhaling excessively cold or condensed gas. The detachable connection method simplifies and expedites component replacement and cleaning, reducing the operational difficulty for medical staff and improving work efficiency. Simultaneously, the highly automated temperature control and condensation management system reduces the need for manual adjustments, further simplifying daily operations.
[0022] In summary, the various technical solutions described above in this application can have one or more of the following advantages or beneficial effects: i) The connection between the fluid collection device and the gas delivery tube body via a rotary joint increases the system's flexibility, facilitating patient movement without affecting effective fluid collection, thus improving ease of use and safety. ii) The heating device ensures a suitable gas temperature and effectively manages condensate, reducing patient discomfort caused by inhaling excessively cold air or condensate, improving the patient's experience. iii) The detachable design of the components simplifies cleaning and maintenance, while the highly automated control system reduces the need for manual adjustments, lowering the workload of medical staff. iv) The design considers different clinical needs and environmental changes, providing flexible solutions to adapt to various situations, enhancing the system's adaptability and flexibility. v) Compared to traditional or complex alternatives, the use of an economical and efficient material like an electrothermal film ensures performance while controlling costs, providing medical institutions with a more cost-effective option. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of the air delivery tube and breathing mask of a ventilator according to an embodiment of the present invention;
[0024] Figure 2 This is a schematic diagram of the liquid accumulation device in the air delivery tube of the ventilator in this embodiment of the present invention;
[0025] Figure 3 This is a schematic diagram of the air delivery tube of the ventilator in an embodiment of the present invention;
[0026] Figure 4 for Figure 3 The left view;
[0027] Figure 5 for Figure 4 A sectional view.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1-Gas delivery pipe; 11-Gas delivery pipe body; 112-Internal pipe; 1121-Flow guide hole; 12-Heating device; 121-Heating component; 122-Outer pipe; 13-Liquid collection device; 131-Collection chamber; 1311-Through hole; 1312-Annular seal; 132-Drainage component; 2-Breathing mask; 21-Air inlet. Detailed Implementation
[0030] The purpose of this invention is to provide an air delivery tube and a breathing mask for a ventilator, which enables the fluid collection device to be stably installed on the air delivery tube and the condensate inside the air delivery tube to be effectively drained, thereby improving the patient's breathing comfort.
[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0032] See Figure 1 and Figure 2 This utility model provides an air delivery tube 1 for a ventilator, which connects a breathing mask 2 and the ventilator. The air delivery tube 1 includes: an air delivery tube body 11, a heating device 12, and a liquid collection device 13. The air delivery tube body 11 is hollow inside, serving as an airflow channel. The heating device 12 is located on the side of the air delivery tube body 11 closest to the ventilator and includes a heating component 121 and an outer tubing 122. The heating component 121 is located outside the air delivery tube body 11 and is used to heat the flowing gas. The outer tubing 122 is located outside the heating component 121 and is used to reduce heat loss. The liquid collection device 13 is located between the breathing mask 2 and the heating device 12. The air delivery tube body 11 passes through the liquid collection device 13 and is rotatably connected to the liquid collection device 13, allowing the liquid collection device 13 to rotate around the air delivery tube body 11, thus preventing the movement of the air delivery tube body 11 from affecting the liquid collection device 13.
[0033] Specifically, the gas delivery tube body 11 serves as the gas connection channel between the ventilator and the breathing mask 2. A heating device 12, wrapped around the gas delivery tube body 11 and located near the ventilator, heats the gas delivered from the ventilator to the gas delivery tube body 11. The heated gas comes into contact with the patient's exhaled gas, reducing condensation and improving the patient's experience. The heating device 12 includes a heating component 121 and an outer tubing 122. The heating component 121 wraps around the outside of the gas delivery tube body 11 to heat the gas passing through the gas delivery tube 1; the outer tubing wraps around the outside of the heating component 121 to reduce heat loss and improve heating efficiency. A condensate collection device 13, a hollow container, stores condensate inside the gas delivery tube. The condensate collection device 13 is located at the lowest point of the gas delivery tube body 11 to drain the condensate. The gas pipeline body 11 passes through the liquid collection device 13, and the liquid collection device 13 rotates relative to the gas pipeline body 11, thereby avoiding the impact of the gas pipeline movement on the liquid collection device 13.
[0034] Furthermore, patients often have activities that cause the gas inlet tube 11 to shake, which may cause the fluid collection device 13 to occasionally hit obstacles. The fluid collection device 13 can rotate at a certain angle relative to the gas inlet tube 11 to avoid obstacles, which can effectively avoid these potential dangers and reduce the risk of fluid leakage.
[0035] See Figure 1 and Figure 2 The liquid collection device 13 includes a collection chamber 131 and a drainage component 132. The collection chamber 131 has a through hole 1311 through which the gas pipe body 11 passes. The drainage component 132 is located at the bottom of the collection chamber 131 and is used to control the discharge of the liquid.
[0036] Specifically, the liquid collection chamber includes a collection chamber 131 for storing condensate and a drainage component 132 for controlling the drainage of the collection chamber 131. The collection chamber 131 has a through hole 1311 through which the gas pipe body 11 passes. The drainage component 132 is located at the bottom of the collection chamber 131 to control the drainage of the liquid in the collection chamber 131.
[0037] See Figure 2 , Figure 3 and Figure 4 An annular seal 1312 is provided at the two end through holes 1311 of the collection chamber 131, and the annular seal 1312 is slidably sealed to the outer wall of the gas pipeline body 11.
[0038] Specifically, the through holes 1311 at both ends of the collection chamber 131 are annular seals 1312, which are fixed on the collection chamber 131. The gas supply pipe body 11 passes through the annular seal 1312 and penetrates the collection chamber 131. The annular seal 1312 is slidably sealed to the outer wall of the gas supply pipe body 11. The annular seal 1312 prevents the collection chamber 131 from shifting relative to the gas supply pipe body 11 when it rotates, thereby avoiding leakage of internal liquid accumulation.
[0039] See Figure 4 and Figure 5 The gas pipeline body 11 includes an internal pipe 112, which is a section of the gas pipeline body 11 located inside the collection chamber 131. The internal pipe 112 is provided with at least one guide hole 1121, which is used to guide condensate into the collection chamber 131.
[0040] Specifically, the section of the gas supply pipe 11 that passes through the inside of the collection chamber 131 is called the chamber pipe 112. The chamber pipe 112 is located between two through holes 1311. The chamber pipe 112 is provided with a guide hole 1121. The guide hole 1121 opens downward and is used to guide the condensate inside the gas supply pipe 1 into the collection chamber 131.
[0041] See Figures 1-2 The side walls of the collection chamber 131 are transparent, and the outer surface is marked with volume scale markings.
[0042] Specifically, the collection chamber 131 is made of transparent material, and the outer wall of the collection chamber 131 is engraved with volume scale markings, which makes it easy for medical staff to observe the situation of the fluid accumulation inside the collection chamber 131 and to control the drainage component 132 to drain the fluid in a timely manner.
[0043] See Figure 2 The drainage component 132 is a manually controlled valve that controls the drainage of the collection chamber 131.
[0044] Specifically, the drainage component 132 is a control valve installed at the bottom of the collection chamber 131, which facilitates the management of the accumulated fluid inside the collection chamber 131 by medical staff.
[0045] See Figure 5 The heating component 121 includes an electric heating film, which is attached to the outer wall of the gas pipe body 11.
[0046] Specifically, the heating component 121 employs electrothermal film technology, which is directly attached to the outer wall of the gas pipeline body 11. The electrothermal film is a high-efficiency heating element that can evenly dissipate heat, thereby effectively heating the gas passing through the gas pipeline. Because it is attached to the outside of the gas pipeline 1, heating of the gas can be achieved without interfering with the gas flow path.
[0047] See Figure 5The heating device 12 includes a temperature sensor, which is located between the outer pipe 122 and the gas pipe body 11.
[0048] Specifically, the heating device 12 also includes a temperature sensor to monitor the temperature change between the outer pipe 122 and the gas delivery pipe body 11, so that medical staff can respond to changes in the surrounding temperature environment.
[0049] See Figure 1 The present invention provides a breathing mask 2, which includes the above-mentioned technical features for use in a ventilator, and the breathing mask 2 includes an air inlet 21, one end of the air inlet 1 being detachably connected to the air inlet 21.
[0050] Specifically, the front end of the breathing mask 2 is provided with an air inlet 21, which is detachably connected to one end of the air supply tube 1 for easy cleaning and replacement.
[0051] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.
Claims
1. An air delivery tube for a ventilator, the air delivery tube connecting a breathing mask and the ventilator, characterized in that, include: The gas pipeline body (11) is hollow inside as an airflow channel; A heating device (12) is disposed on the side of the gas delivery tube body (11) near the ventilator, and includes a heating component (121) and an outer tube (122). The heating component (121) is disposed on the outside of the gas delivery tube body (11) and is used to heat the gas flowing through it. The outer tube (122) is disposed on the outside of the heating component (121) and is used to reduce heat loss. Liquid collection device (13) is disposed between the breathing mask and the heating device (12). The air supply tube body (11) passes through the liquid collection device (13) and is rotatably connected to the liquid collection device (13), so that the liquid collection device (13) rotates around the air supply tube body (11) to avoid the influence of the movement of the air supply tube body (11) on the liquid collection device (13).
2. The air delivery tubing for a ventilator according to claim 1, characterized in that, The liquid collection device (13) includes a collection chamber (131) and a drainage component (132). The collection chamber (131) has a through hole (1311) through which the gas pipe body (11) passes. The drainage component (132) is located at the bottom of the collection chamber (131) and is used to control the discharge of the liquid.
3. The air delivery tubing for a ventilator according to claim 2, characterized in that, The collection chamber (131) has an annular seal (1312) at both ends of the through holes (1311), and the annular seal (1312) is slidably sealed to the outer wall of the gas pipeline body (11).
4. The air delivery tubing for a ventilator according to claim 2, characterized in that, The gas transmission pipe body (11) includes an internal pipe (112), which is a section of the gas transmission pipe body (11) located inside the collection chamber (131). The internal pipe (112) is provided with at least one guide hole (1121), which is used to guide condensate into the collection chamber (131).
5. The air delivery tubing for a ventilator according to claim 2, characterized in that, The sidewalls of the collection chamber (131) are transparent, and the outer surface is marked with volume scale markings.
6. The air delivery tubing for a ventilator according to claim 2, characterized in that, The drainage assembly (132) is a manually controlled valve that controls the drainage of the collection chamber (131).
7. The air delivery tubing for a ventilator according to claim 1, characterized in that, The heating component (121) includes an electrothermal film that is attached to the outer wall of the gas pipe body (11).
8. The air delivery tubing for a ventilator according to claim 7, characterized in that, The heating device (12) includes a temperature sensor, which is disposed between the outer pipeline (122) and the gas pipeline body (11).
9. A breathing mask, characterized in that, Includes an air delivery tube (1) for a ventilator as described in any one of claims 1 to 8, wherein the breathing mask (2) includes an air inlet (21), and one end of the air delivery tube is detachably connected to the air inlet (21).