A mask suitable for use with a variety of oxygen supply systems

Abstract

This utility model relates to a mask suitable for various oxygen supply systems, comprising: a housing; a base for sealingly connecting the housing; an inner tube connector for engaging the inner hole of an air supply connector, the inner tube connector extending into the outer space of the housing, the downstream end of the inner tube connector being connected to the base, and the inner hole of the inner tube connector communicating with the inner space of the housing through a first air inlet channel; and an outer tube connector fitted over the inner tube connector, the downstream end of the outer tube connector being sealed to the base, and an annular groove for inserting the air supply connector being formed between the outer tube connector and the inner tube connector, the downstream of the groove communicating with the inner space of the housing through a second air inlet channel. This utility model has a simple structure, can meet the high-flow oxygen supply requirements during surgery, can accommodate various specifications of oxygen supply interfaces, can expand the applicability of the mask, can continuously supply oxygen to patients, and can significantly reduce the workload of medical staff and the economic burden on patients.

Description

Technical Field

[0001] This utility model relates to a medical device, specifically a face mask suitable for various oxygen supply systems. Background Technology

[0002] Face masks are commonly used medical devices in clinical practice. They are primarily used in clinical settings to connect to breathing lines for gas delivery. Conventional face masks typically only interface with a single type of oxygen supply connector, limiting their application to a single clinical scenario. For example, when a patient is undergoing surgery in an operating room, the face mask interfaces with the supply tubing of an anesthesia ventilator, which usually delivers oxygen via a retractable laryngoscopy tube. Before surgery, to reduce the risk of respiratory depression, pre-oxygen administration is necessary. Pre-oxygen administration significantly increases the patient's oxygen content, enhances the body's tolerance to hypoxia, stabilizes circulatory and respiratory functions, shortens examination time, reduces adverse reactions, and offers better safety. Currently, pre- and post-operative oxygen administration primarily relies on nasal cannula oxygen supply systems within centralized hospital oxygen supply lines. These centralized lines typically have smaller interfaces and utilize low-flow nasal cannulas for oxygen delivery. After preoperative oxygen therapy, the patient is transferred to the operating room, where they are no longer on the oxygen supply system. The oxygen supply method is then switched during this process, typically using a high-flow-rate device such as an anesthesia ventilator. This method requires wearing a mask, which is cumbersome and prolongs the switching time between the two oxygen supply modes. Oxygen therapy is interrupted during the procedure, leading to temporary hypoxia and a gradual decrease in the body's oxygen content, thus reducing the effectiveness of preoperative oxygen therapy. Postoperatively, in the ward, the patient needs to switch to a centralized nasal cannula oxygen supply system. This requires replacing the high-flow-rate mask (such as the one used on the anesthesia ventilator) with a nasal cannula, necessitating mask removal and cannula insertion. The current system switching process not only places a heavy workload on medical staff but also involves prolonged interruptions in oxygen therapy and temporary hypoxia. Furthermore, the replacement of masks or nasal cannula systems increases the financial burden on the patient. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a mask suitable for various oxygen supply systems. It has a simple structure, can meet the large-volume oxygen supply needs during surgery, can accommodate various specifications of oxygen supply interfaces, can expand the applicability of the mask, can continuously supply oxygen to patients, and can also significantly reduce the labor intensity of medical staff and the economic burden on patients.

[0004] The purpose of this invention is achieved as follows: a mask suitable for various oxygen supply systems, comprising:

[0005] Enclosure;

[0006] Base, sealed connection housing;

[0007] An inner tube connector is used to engage the inner hole of an air supply connector. The inner tube connector extends into the outer space of the housing. The downstream end of the inner tube connector is connected to the base. The inner hole of the inner tube connector communicates with the inner space of the housing through a first air intake channel.

[0008] An outer tube connector is fitted over the inner tube connector. The downstream end of the outer tube connector is sealed to the base. An annular groove for inserting an air supply connector is formed between the outer tube connector and the inner tube connector. The downstream of the groove communicates with the inner space of the casing through a second air inlet channel. The inner wall of the groove has a sealing mating surface, which is used to form a sealing fit with the outer wall of the air supply connector inserted into the groove to seal the groove.

[0009] The sealing mating surface is disposed on the outer peripheral wall of the plug groove. The sealing mating surface is conical or cylindrical. The upstream end of the second air intake channel is located downstream of the sealing mating surface.

[0010] The sealing mating surface is annular and is disposed on the bottom wall of the plug groove, and the upstream end of the second air intake channel is located within the area enclosed by the sealing mating surface.

[0011] The base is in the shape of an annular plate, and the outer edge of the base is sealed to the cover. The central hole of the base forms a first air intake channel, and the bottom wall of the plug groove is provided with a second air intake channel that penetrates the base.

[0012] The cross-section of the second air intake channel is a square hole, a round hole, an elliptical hole, or an arc-shaped strip hole; the outer pipe joint and the inner pipe joint are arranged coaxially; the base and the cover are integrally formed.

[0013] The inner pipe connector is an external conical connector, an external cylindrical connector, or a pagoda connector.

[0014] The external pipe fitting is an external tapered fitting, an external tapered fitting, or a pagoda fitting.

[0015] The housing is provided with a sealing hole that penetrates the housing. This sealing hole is used for the endoscope catheter to pass through, and the diameter of the sealing hole is adjustable.

[0016] The housing is provided with a rigid conduit seat. The central hole of the conduit seat is a channel connecting the inside and outside of the housing. A soft diaphragm with an annular structure is provided in the channel. The periphery of the soft diaphragm is closed and fixed to the conduit seat. The inner surface of the diaphragm and the conduit seat form an annular filling chamber. The outer surface of the diaphragm faces the center of the central hole and arches to form a sealing fit hole for the conduit to pass through. The side wall of the filling chamber is provided with a connection hole, and an inflation tube communicating with the outside is connected to the connection hole.

[0017] The sealing hole contains a detachable plug.

[0018] The above-mentioned solution has the following advantages: after the mask fits snugly against the face, it forms a relatively enclosed space, creating a positive pressure breathing chamber after ventilation. Compared to nasal cannula oxygen supply, it can provide a higher concentration of oxygen. The gas from the oxygen supply system connected to the inner tube connector enters the inner space of the mask through the inner hole of the inner tube connector and the first air intake channel. The outer wall of the inner tube connector can be connected to a smaller-sized air delivery connector, and the outer tube connector can be connected to a larger-sized air delivery connector. When the inner tube connector is connected to the air delivery connector, the sealing mating surface forms a sealing fit with the outer wall of the air delivery connector inserted into the plug groove to seal the plug groove. This prevents the gas in the inner space of the mask from continuously leaking through the second air intake channel and the plug groove. Since the second air intake channel is closer to the outlet area of ​​the first air intake channel of the inner tube connector in terms of the entire mask, the oxygen concentration in the outlet area is higher. Preventing the oxygen in this area from leaking through the second air intake channel can avoid the leakage of high-purity oxygen and ensure that the inner space of the mask has a higher oxygen concentration.

[0019] When the outer tube connector is connected to the air delivery connector, such as the air delivery connector of an anesthesia ventilator or the air delivery connector of an elastic breathing bag during resuscitation, part of the airflow directly enters the inner space of the mask through the inner hole of the inner tube connector and the first air intake channel. The other airflow passes through the plug groove and the second air intake channel and enters the inner space of the mask. This allows for better high-flux air supply and significantly reduces airflow resistance during oxygen supply. It facilitates rapid and high-flux oxygen supply, especially in cases of respiratory depression. When oxygen is rapidly supplied through an elastic breathing bag, the gas can enter the inner space of the mask quickly and with less obstruction, blowing the gas inside the bag into the patient's lungs.

[0020] By employing this invention, the gas delivery connector is inserted into the plug groove. When using the inner or outer tube connector's inner mating surface, the outer mating surface of the inner or outer tube connector can have a longer mating length. While ensuring reliable connection and high sealing performance, it ensures that a small portion of the inner tube connector protrudes from the outer tube connector, or even does not protrude at all. This significantly reduces interference when the inner tube connector connects to the outer tube connector and the gas delivery connector. Especially in the case of existing ventilators or anesthesia ventilators using telescopic laryngeals, it can protect the inner wall of the telescopic laryngeal tube. Because the inner tube connector has a small or even no exposed portion, the outer end of the inner tube connector will not extend into the corrugated section of the telescopic laryngeal tube, thus not affecting the bending of the telescopic laryngeal tube or scratching the inner wall of the telescopic laryngeal tube, avoiding the risk of the telescopic laryngeal tube breaking.

[0021] This invention allows for high-volume gas delivery with low resistance when using an outer tube connector for oxygen supply, and prevents oxygen leakage when using a smaller inner tube connector. Furthermore, it eliminates the need to seal the inner tube connector when connecting the outer tube connector, and vice versa, simplifying the structure and reducing operational steps. The inner and outer tube connectors are conveniently located at the outer tube connector, making them easily identifiable and reducing confusion, thus facilitating clinical training and use. This invention can meet the connection requirements of different oxygen supply systems and specifications, demonstrating strong applicability.

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 A first-view schematic diagram of the external pipe joint in the engagement state;

[0025] Figure 3 A second-view schematic diagram of the external pipe joint in the engagement state;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the inner tube connector engagement state;

[0028] Figure 6 for Figure 5 Enlarged view at point B in the middle;

[0029] Figure 7 for Figure 6 Enlarged view at point C;

[0030] Figure 8 This is a schematic diagram of another arrangement of the sealing mating surfaces.

[0031] In the attached diagram, 100 is the casing, 110 is the base, 111 is the first air intake channel, 112 is the second air intake channel, 120 is the inner pipe connector, 130 is the outer pipe connector, 140 is the plug groove, 141 is the sealing mating surface, 142 is the outer peripheral wall of the plug groove, 150 is the guide seat, 151 is the central hole, 152 is the diaphragm, 153 is the filling chamber, 160 is the sealing mating hole, and 300 is the inflation pipe. Detailed Implementation

[0032] Referring to the accompanying drawings, specific embodiments of the present invention will be described in detail.

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be understood that the terms center, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, and outer, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application 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 of this application. In the description of this application, the terms first and second are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as first and second can be used to explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, multiple means two or more. It should be noted that in practical applications, due to limitations in equipment accuracy or installation errors, absolute parallelism or perpendicularity is difficult to achieve. The descriptions of vertical, parallel, or unidirectional in this application are not absolute limitations, but rather indicate that vertical or parallel structural settings can be achieved within a preset error range, and the corresponding preset effects can be achieved. In this way, the technical effects of the defined features can be maximized, and the corresponding technical solutions can be easily implemented, thus having high feasibility.

[0035] In the description of this specification, references to the terms "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] See Figures 1 to 8An embodiment of a face mask suitable for multiple oxygen supply systems is provided. The face mask includes a shell 100, a base 110, an inner tube connector 120, and an outer tube connector 130. The shell 100 covers the user's mouth and nose, forming a relatively enclosed space. The shell 100 can be a shell structure made of polyurethane, polytetrafluoroethylene, polyethylene, polypropylene, polyvinyl fluoride, polymethacrylate, polyterephthalate, nylon, silicone rubber, or polycarbonate. The shell 100 is preferably made of a transparent material. A soft annular sealing gasket is provided at the open end of the shell 100 to cover the user's mouth and nose. This soft annular sealing gasket is an inflatable or liquid-filled gasket, providing high comfort against the face and a flexible seal to the edge of the shell.

[0037] The base 110 is sealed to the housing 100. The base 110 can be integrally formed with the housing 100, which simplifies the structure and reduces the number of process steps. At the same time, the base 110 and the housing 100 have a high degree of sealing. Depending on actual needs, the base 110 can also form part of the housing 100. Of course, the base 110 can also be sealed to the tubular part of the housing 100, allowing the inner and outer pipe joints 130 to be arranged relatively far away in the outer space of the housing 100.

[0038] The inner tube connector 120 is used to engage the inner hole of the air supply connector. The engagement connects the air supply connector and keeps it in a stable position. The air supply connector is usually a small-sized oxygen supply connector provided in the existing centralized oxygen supply system in the ward, and is generally an inner conical connector. Of course, the air supply connector can also be a small oxygen supply connector provided for oxygen supply devices such as oxygen cylinders. The inner tube connector 120 extends into the outer space of the housing 100. The inner tube connector 120 can be an outer conical connector, an outer cylindrical connector, or a pagoda connector, etc., and can be connected to an inner conical connector or a flexible hose, respectively. The downstream end of the inner tube connector 120 is connected to the base 110 to stabilize its position relative to the base 110. The connection method can be integral molding with the base 110, bonding, snap-fit ​​connection, or threaded connection, etc. The inner hole of the inner tube connector 120 communicates with the inner space of the housing 100 through the first air intake channel 111 provided in the base 110 to realize the continuous input of oxygen, air, or drug-containing gas, etc. The inner hole of the inner tube connector 120 can be a conical hole or a cylindrical hole.

[0039] The outer pipe connector 130 is sleeved outside the inner pipe connector 120. The center lines of the outer pipe connector 130 and the inner pipe connector 120 can be parallel or coincident. This parallel or coincident structure facilitates insertion when connecting the gas supply pipeline. The outer pipe connector 130 can be a larger-sized outer conical connector, outer cylindrical connector, or pagoda connector, etc. Of course, the outer pipe connector 130 can also have the mating surface set on the inside of the pipe, and can be an inner conical connector, etc.

[0040] The downstream end of the outer pipe connector 130 is sealed to the base 110 to ensure a tight seal within the plug groove 140. The connection can be integrally formed with the base 110, bonded, snap-fitted, or threaded. An annular plug groove 140 for inserting an air supply connector is formed between the outer pipe connector 130 and the inner pipe connector 120. The downstream end of the plug groove 140 communicates with the inner space of the cover 100 through a second air intake channel 112 provided within the base 110. The inner wall of the plug groove 140 has a sealing mating surface 141, which forms a sealing fit with the outer wall of the air supply connector inserted into the plug groove 140 to seal the plug groove 140.

[0041] In some embodiments, the first air intake channel 111 and the second air intake channel 112 may be arranged relatively independently or may share a portion of the channel; for example, the first air intake channel 111 may be composed of a hole, a plug groove 140 and the second air intake channel 112 arranged on the side wall downstream of the inner hole of the inner tube connector 120. When the inner tube connector 120 is engaged, gas is input through the inner hole of the inner tube connector 120, enters the plug groove 140 after being sealed through the hole, and enters the inner space of the mask through the second air intake channel 112 from the plug groove 140.

[0042] Of course, the first air intake channel 111 and the second air intake channel 112 can be set relatively independently. Specifically, the base 110 is in the shape of an annular plate, and the outer edge of the base 110 is sealed to the cover 100. The central hole 151 of the base 110 forms the first air intake channel 111. The first air intake channel 111 is relatively short and has a relatively straight path, which can effectively reduce air intake resistance and is also easy to process. Furthermore, the first air intake channel 111 can be in the shape of a conical hole. The first air intake channel 111 and the inner hole of the inner pipe connector 120 can share a conical surface, which is convenient for integral molding and demolding. The bottom wall of the plug groove 140 is provided with a second air intake channel 112 that penetrates the base 110. The second air intake channel 112 has a relatively short path, low air intake resistance, and is also easy to process. Furthermore, the base 110 may be provided with multiple second air intake channels 112 spaced apart around the axis of the inner pipe joint 120 to increase the air intake volume. The cross-section of the second air intake channel 112 is a square hole, a round hole, an elliptical hole, or an arc-shaped strip hole. Using an arc-shaped strip hole enables the second air intake channel 112 to have greater structural strength and a larger flow cross-section.

[0043] In some embodiments, the sealing mating surface 141 is disposed on the outer peripheral wall 142 of the plug groove. The sealing mating surface 141 may be in a closed shape such as a conical or cylindrical surface, and the upstream end of the second air inlet channel 112 is located downstream of the sealing mating surface 141. Preferably, the outer peripheral wall 142 of the plug groove may be entirely coplanar with the sealing mating surface 141, that is, the outer peripheral wall is entirely conical or cylindrical, which facilitates integral molding and demolding. When the sealing mating surface 141 is conical or cylindrical, the outer peripheral wall of the air supply connector is tightened with the sealing mating surface 141, forming a closed seal on the outer peripheral wall of the air supply connector, preventing the downstream chamber of the plug groove 140 from communicating with the outside, preventing leakage, and further preventing the gas in the inner space of the mask from continuously flowing to the outside through the second air inlet channel 112, so that the mask depressurizes and a high concentration of oxygen continuously flows out. Preferably, the sealing mating surface 141 is conical, and the end of the plug groove has a large gap, which facilitates the insertion of the air supply connector that engages with the inner pipe connector 120. At the same time, as the air supply connector is inserted, the outer wall of the air supply connector can be wedged tightly with the conical sealing mating surface 141, which facilitates insertion and has high airtightness.

[0044] In some embodiments, see Figure 8 The sealing mating surface 141 is annular and disposed on the bottom wall of the plug groove 140. The upstream end of the second air intake channel 112 is located within the area enclosed by the sealing mating surface 141. A seal is formed by the sealing mating surface 141 contacting the end of the outer wall of the air supply connector, allowing the upstream end of the second air intake channel 112 to maintain high pressure. This prevents gas inside the mask from flowing to the outside through the second air intake channel 112, thus causing the mask to depressurize and preventing the continuous outflow of high-concentration oxygen.

[0045] In some embodiments, to accommodate oxygen supply during endoscopic examinations or treatments, a sealing and fitting hole 160 is provided on the housing 100, which is used for the passage of an endoscopic catheter. The diameter of the sealing and fitting hole 160 is adjustable. The adjustable aperture can be achieved based on a passive adjustment structure or an active adjustment structure. In a passive adjustment structure, the sealing hole 160 can be set on a sealing element made of elastic material. The sealing element is sealed to the housing 100. The central hole 151 of the sealing element is elastic, and this central hole 151 forms the sealing hole 160. When endoscope catheters of different specifications pass through the sealing hole 160, the sealing hole 160 deforms due to its elasticity, thereby sealing the peripheral wall of endoscope catheters of different diameters. Of course, a valve-type structure can also be used in the passive adjustment structure. Multiple valves with radial expansion and contraction are set on the sealing element. The multiple valves surround the sealing hole 160. When the endoscope catheter is engaged with the sealing hole 160, the valves swing or move to adapt to the outer peripheral wall of the endoscope catheter to achieve sealing performance.

[0046] In some embodiments, the aperture can be adjusted by actively adjusting the structure. Specifically, a rigid conduit seat 150 is provided on the housing 100. The central hole 151 of the conduit seat 150 is a channel connecting the inside and outside of the housing 100. A soft diaphragm 152 with an annular structure is provided in the channel. The periphery of the soft diaphragm 152 is closed and fixed to the conduit seat 150. The inner surface of the diaphragm 152 and the conduit seat 150 form an annular filling chamber 153. The outer surface of the diaphragm 152 arches towards the center of the central hole 151 and forms a sealing mating hole 16 for the conduit to pass through. 0. The filling chamber 153 has a connecting hole on its side wall, through which an inflation tube 300 is connected to communicate with the outside. Using this structure, during respiratory depression resuscitation, the filling chamber 153 can be filled with the desired amount of air through the inflation tube 300, causing the diaphragm 152 to inflate and elastically deform. This allows the sealing orifice 160 formed by the diaphragm 152 to achieve the desired orifice diameter, thus enabling sealing of the outer wall of endoscopic catheters of different diameters. Because the degree of inflation and elastic deformation of the diaphragm 152 can be adjusted according to the inflation volume, even smaller endoscopic catheters can still achieve a relatively large sealing effect on the outer wall of the endoscopic catheter. The pressure allows for sealing, enabling rapid resuscitation of patients with respiratory depression during surgery. For endoscopic catheters with larger diameters, reducing the inflation volume allows for appropriate sealing pressure between the diaphragm 152 and the catheter, preventing excessive pressure between the catheter and the sealing hole 160, which could cause catheter jamming. This is particularly suitable for endoscopic catheter procedures requiring a sealed diaphragm. Furthermore, this active adjustment structure can reduce or remove gas from the filling chamber 153, allowing the diaphragm 152 to approach the sealing hole 160 under atmospheric pressure. The central hole 151 of the catheter seat 150, or the diaphragm 152, is completely fitted onto the central hole 151 of the catheter seat 150, creating a larger gap between the diaphragm 152 and the outer wall of the endoscopic catheter. This reduces the support and restriction of the sealing hole 160 on the endoscopic catheter, facilitating catheter insertion and rapid insertion of the mouthpiece. Furthermore, when respiratory depression is not clinically present, a gap between the diaphragm 152 and the endoscopic catheter can be selected to facilitate catheter manipulation after insertion, reduce catheter jamming, and allow for greater angular movement of the endoscopic catheter. In this embodiment, the wall thickness of the fixing hole is different from the thickness of the diaphragm 152. When both the catheter seat 150 and the diaphragm 152 are made of silicone rubber, the catheter seat 150 has relative rigidity to the diaphragm 152.

[0047] Furthermore, the removable plug inside the sealing hole 160 can be used to seal the sealing hole 160 when the endoscope catheter is not inserted, thereby ensuring a high degree of airtightness in the inner space of the mask and facilitating the provision of a high oxygen concentration in the inner space of the mask.

[0048] Using the above scheme, the mask 100 forms a relatively closed space after fitting against the face, creating a positive pressure breathing chamber after ventilation. When connected to a smaller air supply connector, gas can enter the inner space of the mask through the inner hole of the inner tube connector 120 and the first air intake channel 111. Before or after surgery, it can be connected to the smaller-sized air supply connector of the existing oxygen supply system in the ward. When the smaller tube connector is connected, the second air intake channel 112 is sealed by the plug groove 140 to prevent pressure leakage through the second air intake channel 112, thus ensuring proper ventilation of the face. The inner space of the mask has a high degree of airtightness. During the operation, the outer tube connector 130 can be connected to a connector with a larger diameter, such as an anesthesia ventilator or an elastic breathing bag, to achieve a large flow of gas delivery. Both the first air intake channel 111 and the second air intake channel 112 can achieve air intake, which can significantly avoid air supply resistance. At the same time, a large diameter flow stream is formed inside the mask, avoiding the discomfort of small and high flow velocity gas inside the mask stimulating the face. It can quickly supply gas, especially in the event of respiratory depression, it can quickly provide a large amount of gas.

[0049] This invention significantly increases the patient's oxygen content by supplying oxygen through the ward's oxygen supply system before treatment. No mask changes are required throughout the treatment, and the oxygen supply system can be quickly switched. It connects rapidly to anesthesia ventilators or elastic breathing bags via the external tube connector 130, preventing the consumption of pre-inhaled oxygen and significantly reducing the risk of respiratory depression. Post-operatively, it can quickly reconnect to the ward's oxygen supply system, facilitating patient recovery. This invention is compatible with various sizes of air delivery connectors. Meanwhile, this invention, when using the inner tube connector 120 or the outer tube connector 130, allows the inner tube connector 120 or the outer tube connector 130 to have a longer engagement length. While ensuring reliable engagement and high sealing performance, it also ensures that a small portion of the inner tube connector 120 protrudes from the outer tube connector 130, or even does not protrude from the outer tube connector 130. This significantly reduces interference when the inner tube connector 120 engages with the air delivery connector of the outer tube connector 130. Especially in the case of existing ventilators or anesthesia ventilators using telescopic laryngeals, it can protect the inner wall of the telescopic laryngeal tube. Since the inner tube connector 120 has a small or even no exposed portion, the outer end of the inner tube connector 120 will not extend into the corrugated section of the telescopic laryngeal tube, thus not affecting the bending of the telescopic laryngeal tube or scratching the inner wall of the telescopic laryngeal tube, avoiding the risk of the telescopic laryngeal tube breaking.

[0050] This invention allows for high-volume gas delivery with low resistance when using the outer tube connector 130 for oxygen supply, and prevents oxygen leakage when using the smaller inner tube connector 120. Furthermore, this invention eliminates the need to seal the inner tube connector 120 when connecting the outer tube connector 130, and vice versa, simplifying the structure and reducing operational steps. The central location of the inner tube connector 120 and outer tube connector 130 on the outer tube connector 130 enhances identification and reduces confusion, facilitating clinical training and use. This invention can meet the connection requirements of different oxygen supply systems and specifications, demonstrating strong applicability.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications.

Claims

1. A mask suitable for use with a variety of oxygen supply systems, characterized in that, include: Casing (100); Base (110), sealing connection cover (100); An inner tube connector (120) is used to engage the inner hole of the air supply connector. The inner tube connector (120) extends in the space outside the housing (100). The downstream end of the inner tube connector (120) is connected to the base (110). The inner hole of the inner tube connector (120) communicates with the inner space of the housing (100) through the first air intake channel (111). An outer pipe connector (130) is fitted over the inner pipe connector (120). The downstream end of the outer pipe connector (130) is sealed to the base (110). An annular groove (140) for inserting an air supply connector is formed between the outer pipe connector (130) and the inner pipe connector (120). The downstream of the groove (140) is connected to the inner space of the cover (100) through a second air intake channel (112). The inner wall of the groove (140) has a sealing mating surface (141). The sealing mating surface (141) is used to form a sealing fit with the outer wall of the air supply connector inserted into the groove (140) to seal the groove (140).

2. A mask suitable for use with a variety of oxygen delivery systems according to claim 1, wherein: The sealing mating surface (141) is disposed on the outer peripheral wall of the plug groove (140). The sealing mating surface (141) is conical or cylindrical. The upstream end of the second air intake channel (112) is located downstream of the sealing mating surface (141).

3. A mask suitable for use with a variety of oxygen delivery systems according to claim 1, wherein: The sealing mating surface (141) is annular and is disposed on the bottom wall of the plug groove (140), and the upstream end of the second air intake channel (112) is located in the area enclosed by the sealing mating surface (141).

4. A mask suitable for use with a variety of oxygen supply systems according to any one of claims 1-3, characterized in that: The base (110) is in the shape of an annular plate. The outer edge of the base (110) is sealed to the cover. The central hole of the base (110) forms a first air intake channel (111). The bottom wall of the plug groove is provided with a second air intake channel (112) that penetrates the base (110).

5. A mask suitable for use with a variety of oxygen delivery systems according to claim 4, wherein: The cross-section of the second air intake channel (112) is a square hole, a round hole, an elliptical hole or an arc-shaped strip hole; the outer pipe joint (130) and the inner pipe joint (120) are arranged coaxially; the base (110) and the cover (100) are integrally formed.

6. A mask suitable for use with a variety of oxygen delivery systems according to any one of claims 1-3, wherein: The inner pipe connector (120) is an outer conical connector, an outer cylindrical connector, or a pagoda connector.

7. A face mask suitable for various oxygen supply systems according to any one of claims 1-3, characterized in that: The outer pipe joint (130) is an outer conical joint, an outer conical joint, or a pagoda joint.

8. A mask suitable for use with a variety of oxygen delivery systems according to claim 4, wherein: The cover (100) is provided with a sealing fitting hole (160) that passes through the cover (100). The sealing fitting hole (160) is used for the endoscope catheter to pass through, and the diameter of the sealing fitting hole (160) is adjustable.

9. A mask suitable for use with a variety of oxygen delivery systems according to claim 8, wherein: A rigid conduit seat (150) is provided on the housing (100). The central hole (151) of the conduit seat (150) is a channel connecting the inside and outside of the housing (100). A soft diaphragm (152) with an annular structure is provided in the channel. The periphery of the soft diaphragm (152) is closed and fixed on the conduit seat (150). The inner surface of the diaphragm (152) and the conduit seat (150) form an annular filling chamber (153). The outer surface of the diaphragm (152) arches towards the center of the central hole (151) and forms a sealing fitting hole (160) for the conduit to pass through. The side wall of the filling chamber (153) is provided with a connecting hole, and an inflation tube (300) communicating with the outside is connected to the connecting hole.

10. A mask suitable for use with a variety of oxygen supply systems according to claim 8 or 9, wherein: The sealing fitting hole (160) contains a detachable plug.

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