Anesthesia inhalation mask
Through a three-layer structure design and functional accessories, the comfort and sealing issues of the anesthesia mask are solved, resulting in an adaptive, leak-proof, and comfortable anesthesia mask that ensures the stability and safety of the anesthesia process and facilitates patient observation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AFFILIATED HOSPITAL OF JIUJIANG UNIV
- Filing Date
- 2025-02-28
- Publication Date
- 2026-08-04
AI Technical Summary
Existing anesthesia mask materials are not comfortable enough, their sealing depends on external pressure, they are difficult to adapt to diverse facial contours, their fixation methods are limited, they are prone to leaving marks and are uncomfortable after prolonged use, especially for edentulous patients or patients with nasogastric tubes, where the sealing effect is poor.
It features a three-layer structure design, including a skin-friendly gel layer, a flexible support mesh layer, and a microporous memory foam layer, combined with an inflatable sealing ring and a quick-plug connection. It is equipped with a flow regulating valve and a pressure relief spring valve, a gas mixing chamber, and guide vanes. It also features a headrest support pad and a removable anti-fog sheet.
It achieves adaptive facial fit, prevents gas leakage, improves comfort, ensures the stability and safety of the anesthesia process, facilitates operation, maintains a clear field of vision, and makes it easy to observe the patient's condition.
Smart Images
Figure CN224585155U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of media input device technology, specifically to an inhalation anesthesia mask for anesthesiology. Background Technology
[0002] Anesthesia masks are one of the core pieces of equipment in anesthesiology departments, used to deliver a mixture of oxygen and anesthetic gases to patients, ensuring respiratory support and anesthetic efficacy during surgery. Traditional masks are mostly made of medical-grade silicone or polyvinyl chloride, secured by elastic bands or manual pressure, with a focus on airtightness and single-use. With the development of anesthesia techniques, modern equipment has gradually incorporated flow control valves, pressure compensation systems, and detachable circuit designs to improve gas delivery accuracy and safety.
[0003] However, existing face masks still face problems such as insufficient material comfort and reliance on external pressure for sealing. For example, they lack fit: traditional single-layer structures are difficult to adapt to diverse facial contours and are prone to leakage or localized pressure due to uneven pressure, especially for edentulous patients or patients with nasogastric tubes, resulting in poor sealing. They also have limited fixation methods: relying solely on elastic bands can easily leave marks on the face, and manual pressure cannot meet the needs of long-term surgery. Furthermore, they lack comfort: hard materials in contact with the face can easily cause pressure sores, and prolonged use can exacerbate patient discomfort. Utility Model Content
[0004] To address the aforementioned issues, this invention proposes an inhalation-type anesthesia mask for anesthesiology departments. The mask includes a main body with a gas chamber at the point of contact with the patient's mouth and nose. An interface is located above the gas chamber on the main body, connected to an anesthetic gas inlet pipe. Furthermore, the main body comprises a three-layer structure: an outer skin-friendly gel layer, an inner flexible support mesh layer, and a middle microporous memory foam layer. Microporous airbags are embedded within the mesh of the flexible support mesh layer to optimize the fit between the mask and the face. An inflatable sealing ring surrounds the edge of the main body, and this sealing ring is connected to an inflation tube equipped with a manual air pump.
[0005] Furthermore, the interface between the anesthetic gas input pipeline and the mask body adopts a quick-plug connection. A flow regulating valve and a pressure relief spring valve are connected to the delivery pipeline to control the flow rate of the anesthetic gas. A gas mixing chamber is installed on the side of the anesthetic gas input pipeline near the mask body. The anesthetic gas input pipeline is connected to the gas mixing chamber. An air input pipeline is also connected to the outer wall of the gas mixing chamber. Multiple guide vanes are rotatably connected inside the gas mixing chamber.
[0006] Furthermore, multiple elastic straps are attached to both sides of the outer surface of the mask body to wrap around the patient's head and install the mask body; multiple elastic cords are attached to the upper end of the outer surface of the mask body, and the other end of the elastic cords is attached to a headrest support pad, on which a headrest sponge pad is installed to provide good comfort when the patient is lying down.
[0007] Furthermore, a removable anti-fog plate is installed on the inner wall of the gas chamber of the mask body to prevent the patient's exhaled hot air from condensing into fog inside the mask body and affecting observation.
[0008] Furthermore, a filter screen is installed at the connection point between the gas mixing chamber and the anesthetic gas input pipeline.
[0009] The beneficial effects of this utility model are as follows: 1. The three-layer structure of the mask body can adaptively adjust to the patient's facial contours, optimizing the fit between the mask and the face. Simultaneously, the inflatable sealing rings at the edges ensure a tight seal against the patient's face after inflation, effectively preventing leakage of anesthetic gas and the entry of outside air.
[0010] 2. The quick-connect plug-in design of the anesthetic gas inlet pipeline facilitates operation in emergencies or when mask changes are needed, saving time. The flow regulating valve and pressure relief spring valve control the flow and pressure of the anesthetic gas, ensuring a stable and safe anesthesia process. The gas mixing chamber and guide vanes ensure thorough mixing of the anesthetic gas and air, allowing medical staff to flexibly adjust the gas mixture ratio according to the patient's specific condition, meeting the needs of different surgical scenarios.
[0011] 3. The headrest support pad design reduces pressure on the patient's head, improving patient comfort during anesthesia. The removable anti-fog pad effectively prevents the patient's exhaled breath from condensing into fog inside the mask, maintaining a clear view inside the mask and allowing medical staff to promptly observe the patient's breathing and oral cavity, detect abnormalities in a timely manner, and take appropriate measures. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the internal structure of the main body of the mask in this utility model; Figure 2 This is a schematic diagram of the connection structure of this utility model.
[0013] The following are explanations of the reference numerals in the attached drawings: 1. Main body of the mask; 101. Skin-friendly gel layer; 102. Flexible support mesh layer; 103. Microporous memory foam layer; 104. Gas chamber; 2. Microporous airbag; 3. Sealing ring; 4. Anesthetic gas input pipe; 5. Flow regulating valve; 6. Pressure release spring valve; 7. Gas mixing chamber; 8. Air input pipe; 9. Guide vane; 10. Elastic fixing strap; 11. Elastic rope; 12. Headrest support pad; 13. Headrest sponge pad; 14. Anti-fog sheet; 15. Filter screen. Detailed Implementation
[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0016] The present invention will be further described below with reference to the accompanying drawings: An inhalation anesthesia mask used in anesthesiology departments, such as Figure 1 and Figure 2As shown, the mask body 1 adopts a three-layer structure consisting of an outer skin-friendly gel layer 101, an inner flexible support mesh layer 102, and a middle microporous memory foam layer 103. The inner flexible support mesh layer 102 supports the entire mask body 1, ensuring that the mask body 1 maintains a stable shape during wear and will not easily deform. The microporous airbags 2 embedded in the mesh further optimize the fit between the mask body 1 and the face. Due to the differences in facial contours among different patients, the microporous airbags 2 can adaptively adjust according to the facial shape, filling the gaps between the face and the mask body 1, enhancing the seal and improving wearing comfort. The middle microporous memory foam layer 103 has good breathability and memory function. On the one hand, it allows the patient's exhaled air to be discharged in time, avoiding accumulation inside the mask body 1. On the other hand, it can restore its original shape after the mask body 1 is squeezed by external force, maintaining the structural stability of the mask body 1.
[0017] like Figure 1 As shown, the inflatable sealing ring adopts an inflatable design, and the inflation volume of the sealing ring 3 can be adjusted according to the actual situation of the patient's face using a manual air pump. When the sealing ring 3 is inflated, it can closely fit the contours of the patient's face, forming a good seal regardless of whether the patient's face is relatively flat or has a large contour, preventing leakage of anesthetic gas, ensuring the stability of the anesthetic effect, and facilitating medical staff to operate the manual air pump to inflate and deflate the sealing ring 3.
[0018] like Figure 1 and Figure 2 As shown, the interface between the anesthetic gas inlet pipe 4 and the mask body 1 adopts a quick-plug connection. This design is mainly to improve operational efficiency in clinical use. In emergencies, such as when a patient needs emergency anesthesia or the mask body 1 needs to be changed, medical staff can quickly connect or disconnect the anesthetic gas inlet pipe 4 from the mask body 1, saving valuable time. The flow regulating valve 5 connected to the delivery pipe can precisely control the flow rate of the anesthetic gas. Doctors can flexibly adjust the delivery volume of anesthetic gas according to factors such as the patient's age, weight, physical condition, and type of surgery to ensure that the patient is at an appropriate depth of anesthesia during the anesthesia process. The pressure relief spring valve 6 plays a safety protection role. When the pressure in the delivery pipe exceeds the set threshold, the spring valve will automatically open to release excess pressure, preventing the pipe from rupturing due to excessive pressure and ensuring the safe operation of the entire anesthetic gas delivery system.
[0019] like Figure 2As shown, the gas mixing chamber 7 is installed on the side of the anesthetic gas inlet pipe 4 near the mask body 1. Its function is to mix anesthetic gas and air to meet the needs of different surgeries and patients. Air is introduced into the gas mixing chamber 7 through the air inlet pipe 8, and after mixing with the anesthetic gas, the concentration of the anesthetic gas in the mixture can be adjusted. Multiple guide vanes 9 are rotatably connected inside the gas mixing chamber 7, and they rotate with the gas flow. The rotation of the guide vanes 9 can disrupt the gas flow direction, ensuring thorough mixing of the anesthetic gas and air, avoiding uneven local concentrations, and ensuring that the concentration of the mixed gas inhaled by the patient is stable and meets the requirements for anesthesia. A filter screen 15 is installed at the connection between the gas mixing chamber 7 and the anesthetic gas inlet pipe 4 to filter impurities and particles in the anesthetic gas.
[0020] like Figure 1 and Figure 2 As shown, multiple elastic straps 10 connected to both sides of the outer surface of the mask body 1 are used to fix the mask body 1 to the patient's head. The elastic straps 10 have a certain degree of elasticity and can be stretched appropriately according to the size of the patient's head, ensuring stable wearing of the mask body 1 while reducing pressure on the patient's head. Multiple elastic cords 11 are connected to the upper end of the outer surface of the mask body 1, with the other end connected to a headrest support pad 12. When the patient lies down, the elastic cords 11 connect the headrest support pad 12 to the mask body 1, providing support for the patient's head, reducing fatigue caused by prolonged lying down, and also helping to maintain the stable position of the mask body 1, improving the patient's comfort during anesthesia. A headrest sponge pad 13 installed on the headrest support pad 12 further enhances patient comfort. The headrest sponge pad 13 is soft and can relieve pressure between the head and the headrest support pad 12, making the patient feel more comfortable during anesthesia, especially suitable for long surgeries.
[0021] like Figure 1 As shown, the removable anti-fog sheet 14 installed on the inner wall of the gas chamber 104 of the mask body 1 is mainly used to prevent the patient's exhaled hot air from condensing into fog inside the mask body 1. During anesthesia, the patient's exhaled air is high in temperature and contains moisture. If it comes into direct contact with the cooler inner wall of the mask body 1, it can easily condense into fog, affecting the medical staff's observation of the patient's mouth and nose. The anti-fog sheet 14, through special materials or surface treatment, can effectively prevent fog formation, maintain a clear field of vision inside the mask body 1, and facilitate the medical staff's timely observation of the patient's breathing status, oral secretions, etc., so as to detect abnormalities in a timely manner and take appropriate measures.
[0022] The working principle of this utility model is as follows: Mask Donation and Sealing: Medical staff align the mask body 1 with the patient's mouth and nose, wrap the elastic fixing strap 10 around the patient's head, and adjust the position and tightness of the fixing strap to ensure the mask body 1 is stably worn on the patient's face. Next, a manual air pump is used to inflate the sealing ring 3. As gas is injected, the sealing ring 3 gradually expands, closely conforming to the contours of the patient's face to form a good seal, preventing leakage of anesthetic gas and the entry of outside air.
[0023] When the patient lies down, the headrest support pad 12 and the headrest foam pad 13 come into play. The elastic cord 11 connects the mask body 1 and the headrest support pad 12. The headrest support pad 12 provides stable support for the patient's head, while the headrest foam pad 13 provides soft cushioning, making the patient more comfortable during anesthesia.
[0024] Anesthetic gas delivery and control: The anesthetic gas enters through the anesthetic gas inlet pipe 4, first passing through the flow regulating valve 5. Medical staff precisely control the flow rate of the anesthetic gas by adjusting the opening of the flow regulating valve 5 according to the patient's age, weight, physical condition, and surgical needs. For example, the flow rate is appropriately reduced for pediatric patients or patients with high sensitivity to anesthetic gases; the flow rate is increased for major surgeries or cases requiring deep anesthesia.
[0025] As the anesthetic gas continues to flow, the pressure acts on the valve core of the pressure relief spring valve 6. When the pressure exceeds the set spring force, the spring is compressed, the valve core opens, and the excess gas is discharged from the valve, restoring the pressure in the pipeline to normal and ensuring the safety of the entire delivery system.
[0026] Anesthetic gas enters the gas mixing chamber 7, and simultaneously, air enters the gas mixing chamber 7 from the air inlet pipe 8. As the gas flows, the guide vanes 9 begin to rotate under the force of the airflow. The rotation of the guide vanes 9 ensures thorough mixing of the anesthetic gas and air, forming a gas mixture suitable for the patient. Medical personnel can control the airflow rate according to actual needs, thereby adjusting the ratio of anesthetic gas to air in the gas mixture.
[0027] Anti-fog and filtration functions are achieved: During the patient's breathing, the exhaled hot air comes into contact with the anti-fog sheet 14. The special material and structure of the anti-fog sheet 14 can prevent fog from condensing, maintain a clear field of vision inside the mask, and facilitate medical staff to observe the patient's mouth and nose.
[0028] Before entering the gas mixing chamber 7, the anesthetic gas passes through the filter screen 15. The fine mesh on the filter screen 15 can intercept impurities and particles in the anesthetic gas, ensuring that the gas entering the patient's respiratory tract is clean and protecting the patient's health.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An inhalation anesthesia mask for anesthesiology, comprising a mask body (1), wherein a gas chamber (104) is provided at the contact point between the mask body (1) and the patient's mouth and nose, and an interface is provided above the gas chamber (104) of the mask body (1), the interface being connected to an anesthetic gas input pipe (4); characterized in that: The mask body (1) includes a three-layer structure: an outer skin-friendly gel layer (101), an inner flexible support mesh layer (102), and a middle microporous memory sponge layer (103). The flexible support mesh layer (102) has microporous airbags (2) embedded in its mesh to optimize the fit between the mask body (1) and the face. The mask body (1) is surrounded by an inflatable sealing ring (3) around its edge, and the sealing ring (3) is connected to an inflation tube with a manual air pump.
2. An inhalational anaesthesia mask for anaesthesia, according to claim 1, characterised in that: The interface between the anesthetic gas input pipe (4) and the mask body (1) is a quick-plug connection. A flow regulating valve (5) and a pressure release spring valve (6) are connected to the delivery pipe to control the flow rate of the anesthetic gas. A gas mixing chamber (7) is installed on the side of the anesthetic gas input pipe (4) close to the mask body. The anesthetic gas input pipe (4) is connected to the gas mixing chamber (7). An air input pipe (8) is also connected to the outer wall of the gas mixing chamber (7). Multiple guide vanes (9) are rotatably connected inside the gas mixing chamber (7).
3. An inhalational anaesthesia mask for anaesthesia department as claimed in claim 1, wherein: Multiple elastic straps (10) are connected to both sides of the outer surface of the mask body (1) to surround the patient's head and install the mask body (1); multiple elastic cords (11) are connected to the upper end of the outer surface of the mask body (1), and the other end of the elastic cords (11) is connected to a headrest support pad (12), and a headrest sponge pad (13) is installed on the headrest support pad (12) to provide good comfort when the patient is lying down.
4. An inhalation anaesthesia mask for anaesthesia, according to claim 1, characterized in that: The mask body (1) has a removable anti-fog sheet (14) installed on the inner wall of the gas chamber (104) to prevent the patient's exhaled hot air from condensing into fog inside the mask body (1) and affecting observation.
5. An inhalation anaesthesia mask for anaesthesia, according to claim 2, characterised in that: The gas mixing chamber (7) is equipped with a filter screen (15) at the connection with the anesthetic gas input pipe (4).