Conversion device suitable for mask oxygen uptake and nasal catheter oxygen uptake of anaesthesia machine
By designing a conversion device suitable for anesthesia machine masks and nasal cannulas, the problem of incompatibility between anesthesia machine breathing tubing and nasal cannulas was solved, enabling safe and convenient oxygen supply conversion and improving patient comfort and operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-04-14
AI Technical Summary
The breathing tube adapter of the anesthesia machine can only be connected to a face mask and is not compatible with a regular nasal cannula, which makes it inconvenient and cumbersome to provide oxygen to patients during the anesthesia recovery period after extubation.
A switching device suitable for oxygen inhalation via face mask and nasal cannula in anesthesia machines was designed. It adopts a base, small piston, large piston, flexible belt and ring fixing structure to realize bidirectional connection and safe switching of the breathing circuit. It utilizes the carbon dioxide monitoring port and air outlet of the existing breathing circuit adapter.
It enables safe and convenient conversion of oxygen delivery via nasal cannula in anesthesia machines, improves patient comfort, reduces the operational burden on medical staff, and is suitable for oxygen delivery to patients under anesthesia outside the operating room and awake patients with endotracheal intubation. It is simple in design and low in cost.
Smart Images

Figure CN224113098U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical equipment technology, and in particular to a conversion device suitable for oxygen inhalation via an anesthesia machine mask and nasal cannula. Background Technology
[0002] In clinical anesthesia, the main function of the anesthesia machine is to provide anesthetic gases and oxygen to patients, ensuring their anesthetic status and respiratory support during the perioperative period. It is also crucial for monitoring patients' breathing and vital signs.
[0003] Connecting a standard breathing line and mask allows for oxygen supply to the patient. However, during the post-extubation recovery period, in situations where there are no beds available in the PACU, oxygen supply requires simultaneously covering the patient's nose and mouth with a mask. In this case, medical staff must manually hold the mask to ensure oxygen supply during the recovery period. Using a standard nasal cannula significantly improves patient comfort and allows for machine-assisted nasal cannula oxygenation while ensuring adequate oxygen supply to the patient. This frees up medical staff to attend to other matters related to the patient.
[0004] The breathing tubing adapter for anesthesia machines can only be connected to a face mask and is not compatible with a standard nasal cannula. If a nasal cannula could be connected to the anesthesia machine, it would not only ensure oxygen supply but also solve the problem of cumbersome and inconvenient operation caused by the lack of beds in the PACU. Utility Model Content
[0005] The present invention aims to provide a conversion device suitable for oxygen inhalation via face mask and nasal cannula in anesthesia machines, in order to solve the problem that the conversion head of the breathing tubing of anesthesia machines can only be connected to a face mask and is not compatible with conventional nasal cannulas.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A device for switching between mask oxygen inhalation and nasal cannula oxygen inhalation in an anesthesia machine includes a base, which is disc-shaped. A small piston is provided at one end of the base, and a large piston is provided at the end of the base away from the small piston. A flexible belt is provided on the side of the base, and a circular ring fixing structure is provided at the end of the flexible belt away from the base.
[0008] Furthermore, the small piston forms a sealed connection with the carbon dioxide monitoring hole on the breathing tube adapter.
[0009] Furthermore, the large piston forms a sealed connection with the air outlet on the breathing pipe adapter.
[0010] Furthermore, the base, small piston, large piston, flexible belt, and ring fixing structure are integrally formed.
[0011] Furthermore, the base, small piston, large piston, flexible belt, and circular fixing structure are all made of one or more of polyethylene (PE), polypropylene (PP), or polyvinyl chloride (PVC).
[0012] The principle and beneficial effects of this technical solution:
[0013] This invention makes full use of the breathing circuit conversion head connected to the anesthesia machine, and develops a bidirectional piston for the breathing circuit conversion head, so that its oxygen output end can be connected to both a face mask and a nasal cannula, and the switching between the two is safe and portable, making clinical anesthesia work safer and more convenient. Attached Figure Description
[0014] Figure 1 A side view of a device for switching between mask oxygen administration and nasal cannula oxygen administration in an anesthesia machine;
[0015] Figure 2 A top view of a device for switching between mask oxygen administration and nasal cannula oxygen administration in an anesthesia machine;
[0016] Figure 3 A schematic diagram of a device for converting oxygen inhalation via face mask and nasal cannula in an anesthesia machine, connected to an oxygen mask;
[0017] Figure 4 A schematic diagram of a nasal cannula connection for a device that allows for switching between mask oxygen administration and nasal cannula oxygen administration in an anesthesia machine.
[0018] The reference numerals in the accompanying drawings include:
[0019] 1. Base; 2. Small piston; 3. Large piston; 4. Flexible belt; 5. Circular ring fixing structure; 6. Breathing tubing adapter; 7. Carbon dioxide monitoring port; 8. Oxygen mask; 9. Nasal cannula. Detailed Implementation
[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:
[0021] like Figure 1-2 As shown, a switching device for oxygen inhalation via face mask and nasal cannula in an anesthesia machine includes a base 1, which is disc-shaped. A small piston 2 is provided at one end of the base 1, and a large piston 3 is provided at the end of the base 1 away from the small piston 2. The small piston 2 is in a sealed connection with the carbon dioxide monitoring port 7 on the breathing tube adapter 6; the large piston 3 is in a sealed connection with the air outlet on the breathing tube adapter 6. A flexible band 4 is provided on the side of the base 1, and a circular ring fixing structure 5 is provided at the end of the flexible band 4 away from the base 1. The circular ring fixing structure 5 can be fitted onto the carbon dioxide detection port to prevent the device from falling off and being contaminated.
[0022] The base 1, small piston 2, large piston 3, flexible belt 4, and circular ring fixing structure 5 are integrally molded. Furthermore, the base 1, small piston 2, large piston 3, flexible belt 4, and circular ring fixing structure 5 are all made of one or more of the following materials: polyethylene (PE), polypropylene (PP), or polyvinyl chloride (PVC).
[0023] The specific implementation process is as follows:
[0024] Existing breathing tubing adapters 6 are generally equipped with carbon dioxide detection ports, which were previously used to detect carbon dioxide levels. However, with the availability of more effective methods for detecting carbon dioxide, these detection ports have lost their original purpose and are usually blocked when connecting to oxygen masks 8.
[0025] However, while the carbon dioxide detection port can be connected to a conventional nasal cannula 9, the outlet of the breathing tube adapter 6 needs to be blocked after connection. Based on this, the present invention is proposed.
[0026] When this utility model is connected to the oxygen mask 8, as follows: Figure 3 As shown, the small piston 2 blocks the carbon dioxide detection port, allowing oxygen to enter the oxygen mask 8. When this invention is connected to the nasal cannula 9, as... Figure 4 As shown, the small piston 2 is removed from the carbon dioxide detection port, and the large piston 3 on the other side is used to block the air outlet of the breathing tube adapter 6, so that oxygen can enter the nasal cannula 9. The ring fixing structure 5 fitted on the carbon dioxide detection port can ensure that the piston will not be contaminated and unusable due to accidental drop to the ground.
[0027] This invention enables oxygen delivery via nasal cannula 9 in anesthesia machines, making clinical anesthesia safer and more convenient. Patients can receive oxygen via nasal cannula 9 while in the operating room, freeing up medical staff to handle other patient-related matters. This invention has a wide range of applications in clinical anesthesia, including oxygen delivery for anesthesia outside the operating room and for waking intubated patients. Furthermore, its environmentally friendly and simple design, ease of use, low production cost, and high cost-effectiveness make it suitable for widespread adoption.
[0028] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A switching device for oxygen inhalation via face mask and nasal cannula in an anesthesia machine, characterized in that: Includes a base (1), which is disc-shaped. A small piston (2) is provided at one end of the base (1), and a large piston (3) is provided at the end of the base (1) away from the small piston (2). A flexible belt (4) is provided on the side of the base (1), and a circular ring fixing structure (5) is provided at the end of the flexible belt (4) away from the base (1).
2. The conversion device for oxygen inhalation via face mask and nasal cannula in an anesthesia machine according to claim 1, characterized in that: The small piston (2) and the carbon dioxide monitoring hole (7) on the breathing tube adapter (6) form a sealed connection.
3. The conversion device for oxygen inhalation via face mask and nasal cannula in an anesthesia machine according to claim 1, characterized in that: The large piston (3) forms a sealed connection with the air outlet on the breathing pipe adapter (6).
4. The conversion device for oxygen inhalation via face mask and nasal cannula in an anesthesia machine according to claim 1, characterized in that: The base (1), small piston (2), large piston (3), flexible belt (4) and circular fixing structure (5) are integrally formed.