Nasal oxygen cannula device

Abstract

The invention provides a nasal oxygen cannula device, and relates to the field of medical instruments. The nasal oxygen cannula device comprises a nasal plug assembly, an extension tube assembly and a head band assembly. The nose plug assembly comprises a nose plug connector, an air outlet nozzle and a nose plug cushion, the air outlet nozzle is installed in the middle of the nose plug connector, the air inlet end of the air outlet nozzle is in fluid communication with the extension tube assembly, and the air outlet end is located on the inner side of the nose plug connector; nasal plug soft cushions are mounted on the two sides of the air outlet nozzle, and the nasal plug soft cushions are mounted on the inner wall of the nasal plug connector and used for being attached to the face of a user; the nose plug soft cushion is integrally annular, a hollow area is formed in the middle, and the nose plug connector is provided with exhaust holes communicated with the hollow area. The two ends of the head band assembly are detachably connected with the two ends of the nose plug connector respectively. According to the nasal oxygen cannula device, the technical problem that in the prior art, a nasal oxygen cannula is uncomfortable to wear and even causes pressure sores is solved.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more specifically, to a nasal oxygen cannula device. Background Technology

[0002] As an accessory to high-flow humidified respiratory therapy devices, nasal oxygen cannulas are mainly used to connect the breathing tubing of the high-flow humidified respiratory therapy device to the patient's nasal cavity, so as to flush the patient's nasal cavity with a high concentration of oxygen, thereby improving the patient's blood oxygenation, preparing the patient for preoperative procedures and promoting postoperative recovery.

[0003] Currently, nasal oxygen tubes are generally secured to the patient's face using a headband. After wearing the nasal oxygen tube, the tube is in prolonged contact with the patient's face, and the headband exerts a backward pulling force on the tube, resulting in constant pressure on the patient's face. Clinically, pressure sores are frequently observed on the patient's face. At the same time, the prolonged contact with the face prevents sweat from evaporating in time, causing discomfort to the patient's face. Summary of the Invention

[0004] The purpose of this application is to provide a nasal oxygen tube device to solve the technical problems of discomfort or even pressure sores caused by wearing nasal oxygen tubes in the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: The nasal oxygen cannula device provided by the present invention includes a nasal plug assembly, an extension tube assembly, and a headband assembly. The nasal plug assembly includes a nasal plug connector, an air outlet, and a nasal plug pad. The air outlet is installed in the middle of the nasal plug connector, and the air inlet of the air outlet is in fluid communication with the extension tube assembly, while the air outlet is located inside the nasal plug connector. The nasal plug pads are installed on both sides of the air outlet and are installed on the inner wall of the nasal plug connector to fit against the user's face. The nasal plug is ring-shaped with a hollow area in the middle, and the nasal plug connector is provided with an exhaust hole that communicates with the hollow area. The two ends of the headband assembly are detachably connected to the two ends of the nose plug connector.

[0006] Furthermore, the nasal plug pad and the nasal plug connector are integrally formed.

[0007] Furthermore, the nasal plug includes a support portion and an arc-shaped portion, both of which are annular. Along the cross-sectional direction of the nasal plug pad, one side of the support portion is connected to the nasal plug connector, and the other side is connected to the arc-shaped portion; the cross-section of the arc-shaped portion is an arc shape that is concave away from the nasal plug connector, and a deformation area is formed between the arc-shaped portion and the inner wall of the nasal plug connector.

[0008] Furthermore, the nasal plug pad is made of silicone.

[0009] Furthermore, the headband assembly includes a headband and a headband buckle; The two ends of the headband are detachably connected to the two ends of the nose plug connector via the headband buckle.

[0010] Furthermore, one end of the headband buckle is connected to the headband, and the other end is snapped into the outer wall of the nose plug connector.

[0011] Furthermore, the outer wall of the nose plug connector is provided with fixed protrusions and limiting protrusions arranged at intervals, and the limiting protrusions form a limiting hole with the outer wall of the nose plug connector; The end of the headband buckle away from the headband passes through the limiting hole and engages with the fixing protrusion.

[0012] Furthermore, the headband buckle includes a connecting part, a thinning part, and a fixing part. The two ends of the thinning part are respectively connected to the connecting part and the fixing part. The connecting part is engaged with the nose plug connector, and the fixing part is connected to the headband. The thickness of the thinned portion is less than the thickness of the connecting portion and the thickness of the fixing portion.

[0013] Furthermore, the extension tube assembly includes a flexible bellows and an air inlet connector, and the nasal plug assembly also includes a nasal plug elbow, which is installed on the nasal plug connector, with one end connected to the air inlet end of the air outlet and the other end connected to the flexible bellows. The air intake connector is connected to the end of the elastic bellows that is away from the nose plug elbow.

[0014] Furthermore, the air intake connector includes a first connector and a second connector. One end of the first connector is threadedly connected to the elastic bellows, and the other end is snapped into the second connector. The second connector can rotate around its own axis.

[0015] Based on the above technical solutions, the technical effects achievable by this invention can be analyzed as follows: The nasal oxygen cannula device provided by the present invention includes a nasal plug assembly, an extension tube assembly, and a headband assembly. The nasal plug assembly includes a nasal plug connector, an air outlet, and a nasal plug pad. The air outlet is installed in the middle of the nasal plug connector, and the air inlet end of the air outlet is in fluid communication with the extension tube assembly, while the air outlet end is located inside the nasal plug connector. Nasal plug pads are installed on both sides of the air outlet and are installed on the inner wall of the nasal plug connector to fit the user's face. The nasal plug pad is generally annular with a hollow area in the middle. The nasal plug connector has an exhaust hole communicating with the hollow area. The two ends of the headband assembly are detachably connected to the two ends of the nasal plug connector.

[0016] In this nasal oxygen cannula device, the nasal plug connector of the nasal plug assembly supports and secures the air outlet and nasal plug pad. The air outlet connects to the extension tube assembly to deliver air from the breathing tubing connected to the extension tube assembly to the user. The nasal plug pad is installed on the inner wall of the nasal plug connector for a close fit to the user's face. The nasal plug pad separates the user's face from the nasal plug connector, and the nasal plug connector connects to the headband assembly to prevent direct contact between the nasal plug connector and the user's skin, thus avoiding excessive pressure on the face. Furthermore, the nasal plug pad will not move when the headband assembly shifts or tightens, further preventing facial congestion. The nasal plug is designed to withstand greater pressure. Because the nasal plug is ring-shaped with a hollow center, this design allows for deformation, increasing its elasticity and distributing the load evenly between the nasal oxygen device and the user's face. This reduces concentrated pressure on the face and prevents pressure sores. Furthermore, the elastic deformation of the nasal plug allows for a better fit to the user's face shape, ensuring full contact between the sides of the plug and the face even when not worn correctly, preventing localized pressure concentration. Additionally, the nasal plug connector has vents to improve breathability and prevent sweat from evaporating too quickly, keeping the skin dry and comfortable, thus enhancing the user experience.

[0017] The headband assembly and nasal plug connector in this nasal oxygen device are detachably connected, making it convenient to wear the nasal oxygen device.

[0018] The nasal cannula device features a soft nasal plug that distributes the pressure load on the user's face and enhances compatibility with the user's face, making it more secure. At the same time, the nasal plug connector is equipped with an exhaust hole at the position opposite the hollow area, which improves breathability, promotes the evaporation of facial sweat, reduces stickiness, and improves user comfort. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the nasal oxygen cannula device provided in the embodiments of this application from a first-view perspective; Figure 2 A schematic diagram of the nasal oxygen cannula device provided in an embodiment of this application from a second perspective; Figure 3A schematic diagram of the nasal plug assembly in the nasal oxygen cannula device provided in the embodiments of this application from a first-view perspective; Figure 4 This is a schematic diagram of the internal structure of the nasal plug assembly in the nasal oxygen cannula device provided in the embodiments of this application; Figure 5 for Figure 4 A magnified view of a section at point A in the middle; Figure 6 A schematic diagram of the nasal plug assembly in the nasal oxygen cannula device provided in the embodiment of this application from a second perspective; Figure 7 for Figure 6 Cross-sectional view at point BB; Figure 8 A schematic diagram of the nasal plug assembly in the nasal oxygen cannula device provided in the embodiments of this application from a third-view perspective; Figure 9 This is a schematic diagram of the headband buckle in the nasal oxygen cannula device provided in the embodiments of this application; Figure 10 Force analysis diagram of the headband buckle in the nasal oxygen cannula device provided in the embodiments of this application; Figure 11 This is a schematic diagram of the air inlet connector in the nasal oxygen cannula device provided in the embodiments of this application.

[0021] icon: 100 - Nasal plug assembly; 110 - Nasal plug connector; 111 - Vent; 112 - Fixing protrusion; 113 - Limiting protrusion; 114 - Limiting hole; 120 - Air outlet; 130 - Nasal plug pad; 131 - Hollow area; 132 - Support part; 133 - Arc-shaped part; 134 - Deformation area; 140 - Nasal plug elbow; 200 - Headband assembly; 210 - Headband; 220 - Headband buckle; 221 - Connecting part; 222 - Thinned part; 223 - Fixing part; 224 - Connecting hole; 225 - Fixing hole; 300 - Extension tube assembly; 310 - Flexible bellows; 320 - Air inlet connector; 321 - First connector; 322 - Second connector. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 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 application based on the specific circumstances.

[0025] Currently, nasal oxygen cannulas are commonly secured to the patient's face with a headband. However, prolonged contact with the patient's face, coupled with the headband's pulling force, creates constant pressure on the face, frequently resulting in pressure sores. Furthermore, the constant contact with the face prevents sweat from evaporating, causing discomfort. Additionally, improper headband adjustments can cause the nasal oxygen cannulas to tilt or flip, concentrating pressure on the upper or lower side of the face and further increasing the likelihood of pressure sores.

[0026] In view of this, see Figure 1 and Figure 2 The nasal oxygen cannula device provided in this embodiment of the invention includes a nasal plug assembly 100, an extension tube assembly 300, and a headband assembly 200. The nasal plug assembly 100 includes a nasal plug connector 110, an air outlet 120, and a nasal plug pad 130. The air outlet 120 is installed in the middle of the nasal plug connector 110, and the air inlet end of the air outlet 120 is in fluid communication with the extension tube assembly 300, while the air outlet end is located inside the nasal plug connector 110. Nasal plug pads 130 are installed on both sides of the air outlet 120 and are installed on the inner wall of the nasal plug connector 110 to fit against the user's face. The nasal plug pad 130 is generally annular, with a hollow region 131 in the middle. The nasal plug connector 110 is provided with an exhaust hole 111 communicating with the hollow region 131. The two ends of the headband assembly 200 are detachably connected to the two ends of the nasal plug connector 110.

[0027] Specifically, the nasal plug pad 130 is elastic and has a ring-shaped thin-walled soft rubber structure. This nasal oxygen device, through the ring-shaped thin-walled soft rubber nasal plug pad 130, utilizes the elasticity of its material and structure to distribute the pressure load acting on the user's face, increasing compatibility with the user's face and making the fixation more secure. It is worth noting that the term "ring-shaped" in this article is not limited to a circular ring; "ring-shaped" refers to a ring-like structure, that is, a closed, hollow shape, but the specific shape can be diverse; it can be an elliptical ring, a square ring, or an irregular ring, etc. In this embodiment, see... Figure 3 The nasal plug pad 130 is shaped like an oval ring.

[0028] In this nasal oxygen cannula device, the nasal plug connector 110 of the nasal plug assembly 100 supports and fixes the air outlet 120 and the nasal plug pad 130. The air outlet 120 is connected to the extension tube assembly 300 and is used to deliver gas from the breathing tubing connected to the extension tube assembly 300 to the user. The nasal plug pad 130 is installed on the inner wall of the nasal plug connector 110 and is used to fit against the user's face. The nasal plug pad 130 separates the user's face from the nasal plug connector 110, and the nasal plug connector 110 is connected to the headband assembly 200 to prevent the nasal plug connector 110 from directly contacting the user's skin and causing excessive pressure on the face. Furthermore, the nasal plug pad 130 will not be affected when the headband assembly 200 shifts or tightens. The nasal plug 130 is designed for flexibility, further reducing pressure on the user's face. Because the nasal plug pad 130 is ring-shaped with a hollow area 131 in the center, this hollow area provides space for deformation, increasing its elasticity and evenly distributing the load between the nasal oxygen device and the user's face. This reduces concentrated pressure on the face and prevents pressure sores. Furthermore, the elastic deformation of the nasal plug pad 130 allows for better fit to the user's face shape, ensuring complete contact between both sides even when not worn correctly, preventing localized concentrated pressure. Additionally, the nasal plug connector 110 has vents 111. These vents improve breathability, preventing sweat from evaporating quickly enough in the hollow area 131 of the nasal plug pad 130, thus keeping the patient's skin dry and comfortable, enhancing the user experience. The headband assembly 200 of the nasal oxygen cannula is detachably connected to the nasal plug connector 110, facilitating the wearing of the nasal oxygen cannula. The nasal plug pad 130 in the nasal oxygen cannula can distribute the pressure load on the user's face and increases compatibility with the user's face, making the fixation more secure. Meanwhile, the nasal plug connector 110 has an exhaust hole 111 opposite the hollow area 131, improving breathability, promoting the evaporation of facial sweat, reducing stickiness, and improving user comfort.

[0029] The structure and shape of the nasal plug assembly 100 are described in detail below: In the optional solution provided by the embodiments of the present invention, the nasal plug pad 130 and the nasal plug connector 110 are integrally formed.

[0030] Specifically, see Figure 3 , Figure 6 and Figure 8 The nasal plug connector 110 has a symmetrical structure, with two air outlets 120 installed in its center. The two air outlets 120 are spaced apart along the length of the nasal plug connector 110. Two nasal plug pads 130 are located on both sides of the nasal plug connector 110 and are symmetrically arranged. Of course, the arrangement of multiple nasal plug pads 130, with multiple nasal plug pads 130 on each side of the nasal plug connector 110, should also be within the protection scope of this embodiment. In this embodiment, the nasal plug pads 130 and the nasal plug connector 110 are made of the same material and are integrally molded to improve the connection strength and make their elasticity the same. Of course, the nasal plug pads 130 are made of gel material and bonded to the nasal plug connector 110; or the nasal plug pads 130 are made of dressing material and bonded to the nasal plug connector 110, etc., should also be within the protection scope of this embodiment.

[0031] The nasal plug pad 130 and the nasal plug connector 110 are integrally molded, which improves the strength of the nasal oxygen device and extends its service life.

[0032] In an optional embodiment of the present invention, the nasal plug pad 130 includes a support portion 132 and an arc-shaped portion 133, both of which are annular. Along the cross-sectional direction of the nasal plug pad 130, one side of the support portion 132 is connected to the nasal plug connector 110, and the other side is connected to the arc-shaped portion 133. The cross-section of the arc-shaped portion 133 is an arc shape that is concave away from the nasal plug connector 110, and a deformation region 134 is formed between the arc-shaped portion 133 and the inner wall of the nasal plug connector 110.

[0033] Specifically, the support portion 132 and the arc-shaped portion 133 are integrally formed, and both the support portion 132 and the arc-shaped portion 133 are thin-walled structures. See also Figure 4 , Figure 5 and Figure 7 The support portion 132 is connected to the arc-shaped portion 133, creating a deformation area 134 between the arc-shaped portion 133 and the inner wall of the nasal plug connector 110, thereby increasing the deformability of the arc-shaped portion 133. Furthermore, because one side of the arc-shaped portion 133 is connected to the support portion 132 while the other side is open, the deformability of the arc-shaped portion 133 is further increased, and the problem of the nasal plug pad 130 being too thick and not breathable is avoided.

[0034] The support portion 132 connects the arc-shaped portion 133 to the outer wall of the nasal plug connector 110. The arc-shaped portion 133 increases the deformation area 134 between the nasal plug pad 130 and the nasal plug connector 110, enhances the deformation force of the nasal plug pad 130, and thus increases the contact area between the nasal plug pad 130 and the user's face, avoiding pressure concentration that could cause pressure sores on the user's face. Furthermore, the arc-shaped portion 133 is connected to the support portion 132 on one side, allowing the other side of the arc-shaped portion 133 to be breathable.

[0035] In another implementation, the nasal plug pad 130 has an annular cross-section with a deformable region 134 in the middle.

[0036] In an optional embodiment of the present invention, the nasal plug pad 130 is made of silicone.

[0037] The nasal plug pad 130 is made of silicone, which makes it flexible.

[0038] In the optional solution provided by the embodiments of the present invention, the nasal plug connector 110 is provided with multiple vent holes 111 at positions opposite to the same hollow region 131.

[0039] Specifically, a plurality of vent holes 111 are spaced apart along the length of the nose plug connector 110; or, a plurality of queuing holes are spaced apart along the width of the nose plug connector 110; or, a plurality of vent holes 111 are spaced apart along both the length and width of the nose plug connector 110.

[0040] Multiple vent holes 111 are provided to enhance the air permeability of the vent holes 111.

[0041] The structure and shape of the headband assembly 200 are described in detail below: In an optional embodiment of the present invention, the headband assembly 200 includes a headband 210 and a headband buckle 220; the two ends of the headband 210 are detachably connected to the two ends of the nose plug connector 110 via the headband buckle 220.

[0042] Specifically, the headband 210 uses a high-elasticity woven strap to improve compatibility with different head shapes.

[0043] The headband buckle 220 is used to connect the headband 210 and the nose plug connector 110.

[0044] In the optional solution provided by the embodiments of the present invention, one end of the headband buckle 220 is connected to the headband 210, and the other end is snapped into the outer wall of the nose plug connector 110.

[0045] Specifically, the headband buckle 220 has two fixing holes 225 at its tail, and the two fixing holes 225 are spaced apart along the length of the nose plug connector 110; the headband 210 passes through the two fixing holes 225 to achieve a detachable connection between the headband 210 and the headband buckle 220, and the length can be adjusted by pulling the end of the headband 210 to match the head shape of different users.

[0046] One end of the headband buckle 220 is connected to the headband 210, and the other end is engaged with the outer wall of the nose plug connector 110 to prevent the headband buckle 220 from being located inside the nose plug connector 110 and affecting the user's wearing comfort.

[0047] In the optional solution provided by the embodiment of the present invention, the outer wall of the nose plug connector 110 is provided with fixed protrusions 112 and limiting protrusions 113 arranged at intervals, and a limiting hole 114 is formed between the limiting protrusions 113 and the outer wall of the nose plug connector 110; the end of the headband buckle 220 away from the headband 210 passes through the limiting hole 114 and is engaged with the fixed protrusions 112.

[0048] Specifically, the fixing protrusion 112 and the limiting protrusion 113 are spaced apart along the length of the nose plug connector 110, and the fixing protrusion 112 is located on the side of the nose plug connector 110 closer to the air outlet 120 than the limiting protrusion 113. The headband buckle 220 is provided with a connecting hole 224, which engages with the fixing protrusion 112. Preferably, the cross-sections of both the connecting hole 224 and the fixing protrusion 112 are elliptical. When installing the headband assembly 200, the headband buckle 220 is first connected to the headband 210, then the headband buckle 220 is passed through the limiting hole 114, and finally the headband buckle 220 is engaged with the fixing protrusion 112. In this embodiment, the headband buckle 220 is a thin plastic sheet structure.

[0049] The fixing protrusion 112 is used to engage with the headband buckle 220, and the limiting protrusion 113 is used to limit the headband 210. The fixing protrusion 112 and the limiting protrusion 113 achieve a front-end fixing and rear-end limiting connection method for the headband 210, connecting it to the nose plug connector 110. The front end is the end closest to the air vent (same as the air vent below), and the rear end is the end furthest from the air vent. The front fixing position is located in the triangular area between the nose and lower face. This area of ​​the face is concave; placing the fixing position here minimizes the pressure on the face. Simultaneously, proximal fixing better ensures the accuracy of the air vent. See also... Figure 10 , Figure 10 The F indicates the tension on the headband buckle 220. The main function of the "rear limit" is to restrict the direction of the headband 210, ensuring that the stretching direction of the headband 210 is as consistent as possible with the central axis of both sides of the nose plug pad 130, and to keep the force on the upper and lower sides as consistent as possible, thereby reducing the side flipping and lifting of the cheek pad.

[0050] In an optional embodiment of the present invention, the headband buckle 220 includes a connecting part 221, a thinning part 222, and a fixing part 223. The two ends of the thinning part 222 are connected to the connecting part 221 and the fixing part 223 respectively. The connecting part 221 is snapped into the nose plug connector 110, and the fixing part 223 is connected to the headband 210. The thickness of the thinning part 222 is less than the thickness of the connecting part 221 and the thickness of the fixing part 223.

[0051] Specifically, the connecting part 221, the thinned part 222, and the fixing part 223 are integrally formed. The headband buckle 220 is thinned at its center to form the thinned part 222, making the headband buckle 220 semi-rigid. See also Figure 9 The connecting part 221 is provided with a connecting hole 224; the fixing part 223 is provided with two spaced fixing holes 225.

[0052] The thinning portion 222 is used to deform the headband buckle 220 so that the shape of the headband buckle 220 fits the arc shape of the nose plug connector 110 better.

[0053] The structure and shape of the extension tube assembly 300 are described in detail below: In the optional solution provided by the embodiments of the present invention, the extension tube assembly 300 includes an elastic bellows 310 and an air inlet connector 320, and the nasal plug assembly 100 also includes a nasal plug elbow 140. The nasal plug elbow 140 is installed on the nasal plug connector 110, and one end is connected to the air inlet end of the air outlet 120, and the other end is connected to the elastic bellows 310; the air inlet connector 320 is connected to the end of the elastic bellows 310 away from the nasal plug elbow 140.

[0054] Specifically, the flexible bellows 310 is made of soft rubber, enhancing the user experience while providing air supply; the soft bellows offers superior feel and flexibility. One end of the flexible bellows 310 connects to the nasal plug elbow 140, and the other end connects to the air inlet connector 320. See also Figure 8 The nasal plug elbow 140 is made of hard plastic. The air inlet end of the nasal plug elbow 140 is connected to the extension tube assembly 300, and the air outlet end is press-fitted with the nasal plug connector 110 around its perimeter to ensure both connection and airtightness.

[0055] The extension tube assembly 300 is used to connect the breathing tubing and the nasal plug elbow 140.

[0056] Among the optional solutions provided in the embodiments of the present invention, see [link to relevant documentation]. Figure 11 , Figure 11 The rotating arrow in the middle indicates the rotatable direction of the second connector 322; the air intake connector 320 includes a first connector 321 and a second connector 322. One end of the first connector 321 is threadedly connected to the elastic bellows 310, and the other end is snapped into the second connector 322. The second connector 322 can rotate around its own axis.

[0057] Specifically, the air inlet connector 320 consists of a first connector 321 and a second connector 322. The second connector 322 can rotate freely in the axial direction so as to adjust the position of the nasal oxygen device when the breathing tubing is twisted.

[0058] The advantages of this nasal cannula device are explained in detail below: Firstly, the nasal oxygen device has a nasal plug pad 130: To avoid pressure sores, a nasal plug pad 130 is provided on both sides of the cheeks of the nasal plug connector 110. The nasal plug pad 130 is composed of a thin-walled soft rubber ring. The sidewalls of the thin-walled structure contact the user's facial skin. In addition to utilizing the elasticity of the silicone material itself, the thin-walled structure increases the elasticity of the nasal plug pad 130. Furthermore, the thin-walled structure evenly distributes the load between the nasal oxygen device and the user's face, reducing the concentrated pressure load on the user's face and reducing and avoiding the occurrence of pressure sores. In addition, through the elastic deformation of the thin walls around the perimeter, it can better match the patient's face shape. Even if it is not worn completely correctly, the sides of the nasal plug pad 130 can still make full contact with the face, avoiding the generation of local concentrated load.

[0059] In addition, an air vent 111 is provided on the nasal plug connector 110 opposite to the hollow area 131 of the annular thin-walled gasket of the nasal plug pad 130. The main function of this air vent 111 is to improve breathability, prevent the sweat produced by the skin in the area of ​​the nasal plug pad 130 from not evaporating in time and producing a sticky feeling, keep the user's skin dry and fresh, and improve the user experience.

[0060] Secondly, regarding the connection method between the outer wall of the nose plug connector 110 and the headband 210: the outer wall of the nose plug connector 110 is provided with a fixing protrusion 112 and a limiting protrusion 113, optimizing the connection method between the nose plug connector 110 and the headband 210 from a single tail connection to a "front-end fixing, rear-end limiting" connection method; where the front end is the end closer to the air vent, and the rear end is the end farther away from the air vent; the front-end fixing position is located in the triangular area of ​​the nose wing and lower face, where the face is concave, and placing the fixing position in this position can minimize the pressure on the face, while the front-end fixing can better ensure the accuracy of the air vent. The main function of the "rear-end limiting" is to restrict the direction of the headband 210, ensuring that the stretching direction of the headband 210 is as consistent as possible with the central axis on both sides of the nose plug connector 110, and to keep the force on the upper and lower sides consistent as much as possible, reducing the side flipping and lifting of the cheek pad.

[0061] Thirdly, the nasal plug connector 110 and the headband 210 are connected by a headband buckle 220. The headband buckle 220 adopts a thin sheet structure, and a thinning part 222 is formed by a local thinning area in the middle. The thinning part 222 is used for the deformation of the headband buckle 220, so that the headband buckle 220 can offset the shear force through deformation when subjected to force, thereby reducing the pressure of the headband buckle 220 on the face. At the same time, the deformation of the headband buckle 220 can make the headband buckle 220 better fit the curvature of the outer surface of the cheek pad of the nasal plug soft pad 130, thereby making the headband 210 fit the nasal plug soft pad 130 better and optimizing the force form and state.

[0062] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0063] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A nasal oxygen cannula device, characterized in that, include: Nasal plug assembly (100), extension tube assembly (300), and headband assembly (200); The nasal plug assembly (100) includes a nasal plug connector (110), an air outlet (120), and a nasal plug pad (130). The air outlet (120) is installed in the middle of the nasal plug connector (110), and the air inlet of the air outlet (120) is in fluid communication with the extension tube assembly (300), while the air outlet is located inside the nasal plug connector (110). The nasal plug pad (130) is installed on both sides of the air outlet (120), and the nasal plug pad (130) is installed on the inner wall of the nasal plug connector (110) to fit against the user's face. The nasal plug pad (130) is generally annular, with a hollow area (131) in the middle. The nasal plug connector (110) is provided with an exhaust hole (111) that communicates with the hollow area (131). The two ends of the headband assembly (200) are detachably connected to the two ends of the nose plug connector (110).

2. The nasal oxygen cannula device according to claim 1, characterized in that, The nasal plug pad (130) and the nasal plug connector (110) are integrally formed.

3. The nasal oxygen cannula device according to claim 1, characterized in that, The nasal plug pad (130) includes a support portion (132) and an arc-shaped portion (133), both of which are annular. Along the cross-sectional direction of the nasal plug pad (130), one side of the support part (132) is connected to the nasal plug connector (110), and the other side is connected to the arc-shaped part (133); the cross-section of the arc-shaped part (133) is an arc-shaped concave in the direction away from the nasal plug connector (110), and a deformation area (134) is formed between the arc-shaped part (133) and the inner wall of the nasal plug connector (110).

4. The nasal cannula device according to any one of claims 1-3, characterized in that, The nasal plug pad (130) is made of silicone.

5. The nasal oxygen cannula device according to claim 1, characterized in that, The headband assembly (200) includes a headband (210) and a headband buckle (220); The two ends of the headband (210) are detachably connected to the two ends of the nose plug connector (110) via the headband buckle (220).

6. The nasal oxygen cannula device according to claim 5, characterized in that, One end of the headband buckle (220) is connected to the headband (210), and the other end is snapped into the outer wall of the nose plug connector (110).

7. The nasal oxygen cannula device according to claim 6, characterized in that, The outer wall of the nose plug connector (110) is provided with fixed protrusions (112) and limiting protrusions (113) arranged at intervals, and the limiting protrusions (113) and the outer wall of the nose plug connector (110) form a limiting hole (114). The end of the headband buckle (220) away from the headband (210) passes through the limiting hole (114) and engages with the fixing protrusion (112).

8. The nasal cannula device according to claim 6, characterized in that, The headband buckle (220) includes a connecting part (221), a thinning part (222), and a fixing part (223). The two ends of the thinning part (222) are respectively connected to the connecting part (221) and the fixing part (223). The connecting part (221) is engaged with the nose plug connector (110), and the fixing part (223) is connected to the headband (210). The thickness of the thinned portion (222) is less than the thickness of the connecting portion (221) and the thickness of the fixing portion (223).

9. The nasal oxygen cannula device according to claim 1, characterized in that, The extension tube assembly (300) includes a flexible bellows (310) and an air inlet connector (320). The nasal plug assembly (100) also includes a nasal plug elbow (140), which is installed on the nasal plug connector (110) and has one end connected to the air inlet of the air outlet (120) and the other end connected to the flexible bellows (310). The air inlet connector (320) is connected to the end of the elastic bellows (310) away from the nose plug elbow (140).

10. The nasal oxygen cannula device according to claim 9, characterized in that, The air intake connector (320) includes a first connector (321) and a second connector (322). One end of the first connector (321) is threaded to the elastic bellows (310), and the other end is snapped into the second connector (322). The second connector (322) can rotate around its own axis.

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