Nasal mask ventilation structure

Abstract

The utility model discloses a kind of nasal mask ventilation structures. Including: nasal mask, nasal mask is equipped with air inlet, air outlet and overflow passage, overflow passage is communicated with air inlet and air outlet, air inlet is used to supply outside gas to enter overflow passage, nasal mask is used to wear in nasal region of human body, so that the gas in overflow passage can flow to human nasal cavity by air outlet;Headwear, headwear is used to wear in head of human body, headwear includes headwear main body and two connecting bands, two connecting bands are respectively detachably connected to the opposite two side walls of nasal mask;One of nasal mask and connecting band is equipped with connecting piece, the other is equipped with connecting groove, connecting piece and connecting groove are detachably matched. The nasal mask ventilation structure of the utility model solves the problem that the traditional nasal mask's binding belt cannot be detached, leading to the difficulty in cleaning and disinfecting, and the problem of the existing detachable nasal mask structure complexity.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a nasal mask ventilation structure. Background Technology

[0002] In the treatment of sleep-related breathing disorders such as obstructive sleep apnea, positive airway pressure (PEP) therapy is generally used. This involves delivering positive pressure gas into the patient's airway through a breathing device. Such devices typically include a PEP device (Continuous Positive Airway Pressure) or a Bi-level Positive Airway Pressure (Bi-PAP), an air delivery tube, and a patient breathing interface, which is usually a nasal mask or an oronasal mask. A nasal mask generally includes a connector for the air delivery tube, a bend, a housing, a flexible cover, straps, and a support. The connector, bend, housing, and flexible cover are connected sequentially, with the support fixed to the housing, and the straps fastened to the support at both ends. During use, the nasal mask is secured to the patient's nose area by the straps, and the flexible cover contacts the skin in a triangular area from below the bridge of the nose to above the mouth. The pressure difference between the straps and the inside and outside of the nasal mask creates an airtight seal between the flexible cover and the skin in the contact area, allowing positive pressure gas to be delivered into the patient's airway. Traditional nasal masks have non-removable straps, making it impossible to separate the straps for cleaning, disinfection, or replacement. While related technologies have detachable straps, the assembly and disassembly methods are complex and cumbersome. Utility Model Content

[0003] The main purpose of this invention is to propose a nasal mask ventilation structure, which aims to solve the technical problem of how to improve the ease of assembling and disassembling headgear.

[0004] To achieve the above objectives, the nasal mask ventilation structure proposed in this utility model includes:

[0005] A nasal mask, wherein the nasal mask is provided with an air inlet, an air outlet and a flow channel, the flow channel connecting the air inlet and the air outlet, the air inlet being used to allow external air to enter the flow channel, and the nasal mask being used for a person to wear in the nasal area so that the air in the flow channel can flow to the nasal cavity through the air outlet.

[0006] A headband for wearing on the head, the headband comprising a headband body and two connecting straps, the two connecting straps being detachably connected to opposite side walls of the nose mask;

[0007] One of the nose mask and the connecting strap is provided with a connector and the other is provided with a connecting groove, and the connector and the connecting groove are detachably engaged.

[0008] Optionally, the connector protrudes from the side wall of the nasal mask. The connector includes a connecting part and a mating part. One end of the connecting part is connected to the side wall of the nasal mask, and the mating part is connected to the end of the connecting part away from the side wall of the nasal mask.

[0009] The end of the connecting strap is provided with a connecting buckle, and the connecting groove is formed in the connecting buckle. The connecting buckle has a first sidewall opposite to the nose mask and a second sidewall adjacent to the first sidewall. The opening of the connecting groove is provided in the second sidewall. The first sidewall has a clearance groove that communicates with the connecting groove. The opening of the clearance groove communicates with the opening of the connecting groove. The mating part enters or exits the connecting groove from the opening of the connecting groove, and the connecting part enters or exits the clearance groove from the opening of the clearance groove. The width of the mating part is greater than the width of the clearance groove to restrict the mating part from disengaging from the connecting groove through the clearance groove.

[0010] Optionally, the peripheral wall of the connecting part is provided with a positioning rib, and the groove wall of the clearance groove is provided with a positioning groove, and the positioning rib and the positioning groove are positioned and engaged.

[0011] Optionally, the positioning groove and the clearance groove are arranged opposite to each other, and the positioning rib protrudes from the side of the connecting part away from the opening of the positioning groove.

[0012] Optionally, the wall of the clearance groove is provided with a limiting protrusion, which is located between the connecting part and the opening of the clearance groove. The limiting protrusion abuts against the connecting part to increase the resistance when the connecting part moves toward the opening of the clearance groove.

[0013] Optionally, the limiting protrusion is provided on both opposite walls of the clearance groove.

[0014] Optionally, the nasal mask includes a connecting base and a cover that are spliced ​​together, the air inlet is opened in the connecting base, the air outlet is opened in the cover, the connector protrudes from the connecting base, and the cover and the connecting base are detachably connected so that the cover can be replaced.

[0015] Optionally, the connector is integrally formed with the connector seat; and / or, the connector buckle is integrally formed with the connector strap.

[0016] Optionally, the nasal mask ventilation structure further includes a ventilation tube and a connecting clip. One end of the ventilation tube is connected to the air inlet and the other end is used to connect to the air supply device. The connecting clip is connected to the outer wall of the ventilation tube and is used to clamp to the external structure so that the ventilation tube and the nasal mask remain relatively fixed to the external structure.

[0017] Optionally, the outer wall of the vent pipe is provided with a connecting ring, and the connector is detachably connected to the connecting ring.

[0018] This invention solves the problems of traditional nasal mask ventilation structures, such as the difficulty in cleaning and disinfection due to the non-removable straps, and the complexity of existing detachable nasal mask structures. The split design allows for complete separation of the nasal mask and headband, facilitating individual cleaning and disinfection and reducing the risk of bacterial growth. The simplified connection structure reduces the difficulty of assembly and disassembly, allowing users to complete the operation without tools, thus improving ease of use. The plug-in connection mechanism ensures the stability and reliability of the connection while simplifying the manufacturing process and reducing production costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of an embodiment of the nasal mask ventilation structure of this utility model;

[0021] Figure 2 This is a structural cross-sectional view of the nose shield and connecting strap in this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of one embodiment of the headgear in this utility model;

[0023] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0024] Figure 5 This is a schematic diagram of the nasal mask in this utility model;

[0025] Figure 6 This is an exploded view of the nasal mask in this utility model;

[0026] Figure 7 This is a schematic diagram of the vent pipe in this utility model.

[0027] Explanation of icon numbers:

[0028]

[0029]

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] This utility model proposes a nasal mask ventilation structure, aiming to solve the technical problem of how to improve the ease of disassembly and assembly of headwear.

[0035] In the embodiments of this utility model, such as Figures 1 to 5As shown, the nasal mask ventilation structure includes: a nasal mask 10, which has an air inlet 11, an air outlet 12, and a flow channel. The flow channel connects the air inlet 11 and the air outlet 12. The air inlet 11 is used to allow external air to enter the flow channel. The nasal mask 10 is worn by a human body in the nasal area so that the air in the flow channel can flow to the human nasal cavity through the air outlet 12; a headband 20, which is worn by a human body on the head. The headband 20 includes a headband body 21 and two connecting straps 22. The two connecting straps 22 are detachably connected to opposite side walls of the nasal mask 10; one of the nasal mask 10 and the connecting straps 22 is provided with a connector 13, and the other is provided with a connecting groove 233. The connector 13 and the connecting groove 233 are detachably engaged.

[0036] In this embodiment, the nasal mask 10 refers to a device worn on the nasal area of ​​the human body. Specifically, it can be implemented using a combination structure of a rigid shell with an air inlet 11, an air outlet 12, and an internal channel, and a flexible sealing gasket. The air inlet 11 is used to receive external gas, the air outlet 12 guides the gas to the nasal cavity, and the flow channel forms a gas transmission path. The air inlet 11 is connected to an external air source, and the flow channel connects the air inlet 11 and the air outlet 12, allowing gas to flow in from the air inlet 11, pass through the flow channel, and then flow from the air outlet 12 to the human nasal cavity.

[0037] The headband 20 refers to a support device fixed to the head, which can be implemented using a combination of elastic fabric straps and rigid connecting buckles 23. The headband body 21 surrounds the head contour, and two connecting straps 22 are symmetrically distributed on both sides of the nose mask 10, achieving wearing stability through a detachable connection. The detachable connection refers to a mechanical plug-in engagement structure, specifically achieved through a snap-fit ​​engagement of a convex connector 13 and a concave connecting groove 233. The connector 13 is located on the side wall of the nose mask 10 or at the end of the connecting strap 22, and the connecting groove 233 is correspondingly located on another component, forming a reversible physical connection. The complementary arrangement of the connector 13 and the connecting groove 233 refers to a geometrically matched joining structure, specifically achieved through a combination of a T-shaped protrusion and an L-shaped channel.

[0038] The connector 13 and the connecting groove 233 are designed with a complementary structure, allowing them to fit tightly together. The connector 13 may be a protrusion or raised structure, while the connecting groove 233 is a matching recess. When connecting, the connector 13 is inserted into the connecting groove 233 and secured by friction or a snap-fit ​​mechanism. When disassembling, a certain external force can be applied to separate the two. This design allows the connecting strap 22 to be detached independently, facilitating individual cleaning or replacement, while ensuring wearing stability.

[0039] Through the above-described solution, this application solves the problems of difficult cleaning and disinfection caused by the non-removable straps of traditional nasal masks 10, as well as the complex structure of existing detachable nasal masks 10. The split design allows the nasal mask 10 and headband 20 to be completely separated, facilitating individual cleaning and disinfection and reducing the risk of bacterial growth. The simplified connection structure reduces the difficulty of assembly and disassembly, allowing users to complete the operation without tools, thus improving ease of use. The plug-in mating mechanism ensures the stability and reliability of the connection, while simplifying the manufacturing process and reducing production costs.

[0040] For example, such as Figures 2 to 5 As shown, the connector 13 protrudes from the side wall of the nose mask 10. The connector 13 includes a connecting portion 131 and a mating portion 132. One end of the connecting portion 131 is connected to the side wall of the nose mask 10, and the mating portion 132 is connected to the end of the connecting portion 131 away from the side wall of the nose mask 10. The end of the connecting strap 22 is provided with a connecting buckle 23. A connecting groove 233 is formed in the connecting buckle 23. The connecting buckle 23 has a first side wall 231 opposite to the nose mask 10 and a second side wall 232 adjacent to the first side wall 231. The groove opening of the connecting groove 233 is provided with... On the second sidewall 232, the first sidewall 231 has an allowance groove 234. The allowance groove 234 communicates with the connecting groove 233. The opening of the allowance groove 234 communicates with the opening of the connecting groove 233. The mating part 132 enters or exits the connecting groove 233 from the opening of the connecting groove 233. The connecting part 131 enters or exits the allowance groove 234 from the opening of the allowance groove 234. The width of the mating part 132 is greater than the width of the allowance groove 234 to restrict the mating part 132 from disengaging from the connecting groove 233 through the allowance groove 234.

[0041] The mating path between the connector 13 and the connecting buckle 23 is limited to sliding along the opening direction of the connecting groove 233. When the mating part 132 enters the connecting groove 233, the connecting part 131 simultaneously enters the clearance groove 234. During installation, the connector 13 is pushed in along the opening direction of the second side wall 232. Simultaneously, the mating part 132 enters the connecting groove 233, and the connecting part 131 embeds into the clearance groove 234. Since the opening of the clearance groove 234 communicates with the opening of the connecting groove 233, the connecting part 131 can naturally enter the clearance groove 234 with the sliding motion. The width of the mating part 132 is greater than the width of the clearance groove 234, thus confining the mating part 132 within the connecting groove 233 and preventing it from laterally disengaging. During disassembly, the connector 13 is slid in the opposite direction, the mating part 132 exits from the connecting groove 233, and the connecting part 131 simultaneously exits from the clearance groove 234. The interconnected design of the clearance groove 234 ensures an unobstructed sliding path and reduces operating resistance.

[0042] Through the above technical solution, the mating part 132 of the connector 13 cannot disengage from the clearance groove 234, forming a mechanical lock and preventing accidental disengagement. The connecting part 131 enters and exits through the groove of the clearance groove 234, allowing the connector 13 to slide along a specific path, ensuring that during installation, positioning can be completed simply by pushing it in the direction of the groove of the connecting groove 233. The groove design of the first side wall 231 and the second side wall 232 of the connecting buckle 23 is interconnected, allowing for separation by sliding in the opposite direction during disassembly, simplifying the operation. The dimensional difference between the mating part 132 and the connecting groove 233 enhances the resistance to pull-out after connection, while the width limitation of the clearance groove 234 ensures that the connecting part 131 will not shift during sliding, improving assembly accuracy. Thus, this solution improves the convenience of disassembly and assembly while ensuring connection stability, enhancing the user experience.

[0043] Specifically, such as Figure 4 and Figure 6 As shown, the peripheral wall of the connecting part 131 is provided with a positioning rib 133, and the groove wall of the clearance groove 234 is provided with a positioning groove 235. The positioning rib 133 and the positioning groove 235 are positioned and engaged.

[0044] The positioning rib 133 can be a long, protruding strip, and the positioning groove 235 can be correspondingly formed on the groove wall of the clearance groove 234, with a shape matching the positioning rib 133. When the connector 13 is inserted into the connector buckle 23, the positioning rib 133 can be embedded in the positioning groove 235 to achieve precise positioning, and the physical fit restricts the rotation of the connector 131 within the clearance groove 234.

[0045] Through the above technical solution, precise positioning between the connector 13 and the connecting buckle 23 is achieved. This structural design effectively restricts the rotation of the connecting part 131 within the clearance groove 234, enhancing connection stability. During the insertion or withdrawal of the connector 13 from the clearance groove 234, the cooperation between the positioning rib 133 and the positioning groove 235 provides a clear guiding effect, reducing the relative displacement between the connector 13 and the connecting buckle 23. As a result, the connection between the nose mask 10 and the connecting strap 22 is more secure and reliable, improving the stability of the nose mask 10 when worn. At the same time, this positioning structure also simplifies the assembly and disassembly operation; the user only needs to apply force in a specific direction to complete the connection or separation, improving the ease of use of the product.

[0046] In practical applications, such as Figure 4 and Figure 6As shown, the positioning groove 235 and the clearance groove 234 are positioned opposite each other, and the positioning rib 133 protrudes from the side of the connecting part 131 away from the opening of the positioning groove 235. The positioning groove 235 is formed on the groove wall of the clearance groove 234, with its opening facing the direction in which the connecting part 131 is inserted into the clearance groove 234. The positioning rib 133 protrudes from the back of the connecting part 131, that is, the side away from the opening of the positioning groove 235. When the connecting part 131 is inserted into the clearance groove 234, the positioning rib 133 can be directly aligned with the positioning groove 235 and is embedded in the positioning groove 235 after the connecting part 131 is fully inserted. Through this technical solution, it is ensured that the positioning rib 133 can be directly aligned with the positioning groove 235 during the assembly process, avoiding the offset of the positioning rib 133 caused by misalignment of the groove opening. As a result, the assembly process of the connecting part 13 and the connecting buckle 23 becomes smoother and more accurate.

[0047] For example, such as Figure 4 As shown, the groove wall of the clearance groove 234 is provided with a limiting protrusion 236. The limiting protrusion 236 is located between the connecting part 131 and the groove opening of the clearance groove 234. The limiting protrusion 236 abuts against the connecting part 131 to increase the resistance when the connecting part 131 moves toward the groove opening of the clearance groove 234.

[0048] The limiting protrusion 236 can be a semi-cylindrical structure, bulging relative to the groove wall surface of the clearance groove 234. The limiting protrusion 236 can be integrally formed using the same material as the groove wall of the clearance groove 234, or it can be made separately from an elastic material and fixed to the groove wall. When the connecting part 131 is inserted into or removed from the clearance groove 234, the limiting protrusion 236 will generate frictional contact with the connecting part 131, thereby increasing the resistance to the movement of the connecting part 131. The contact surface between the limiting protrusion 236 and the connecting part 131 can be designed as an arc or a slope, for example, using a rounded protrusion shape to reduce frictional resistance during installation. When the connecting part 131 moves towards the groove opening, the limiting protrusion 236 generates frictional resistance or mechanical obstruction through physical interference. For example, when the connecting part 131 is made of a rigid material, the limiting protrusion 236 can be made of an elastic material to increase the deformation of the contact surface, thereby improving the frictional effect.

[0049] As the connecting portion 131 moves along the clearance groove 234, the limiting protrusion 236 remains in continuous contact with the surface of the connecting portion 131. When the connecting portion 131 is subjected to an external force toward the groove opening, the limiting protrusion 236 generates a counterforce through the compression deformation of the contact surface. This resistance is significantly higher than the external force generated by normal vibration or accidental pulling, thereby preventing unintended displacement of the connecting portion 131. During installation, when the connecting portion 131 enters from outside the clearance groove 234, the inclined or arc-shaped structure of the limiting protrusion 236 allows the connecting portion 131 to slide in with a smaller thrust.

[0050] The above technical solution effectively prevents the connecting part 131 from accidentally moving towards the opening of the clearance groove 234 due to external force or vibration. The setting of the limiting protrusion 236 increases the resistance that the connecting part 131 needs to overcome during movement, and improves the fit stability between the connecting part 13 and the connecting groove 233. This design not only ensures the firmness of the connection between the nasal mask 10 and the headband 20, but also improves the reliability of the entire nasal mask 10 ventilation structure. At the same time, since the presence of the limiting protrusion 236 does not affect the normal installation and disassembly operation of the connecting part 131, the detachable characteristics of the structure are maintained while ensuring connection stability.

[0051] Specifically, such as Figure 4 As shown, the two opposite walls of the clearance groove 234 are provided with limiting protrusions 236. The limiting protrusions 236 on the two opposite walls are symmetrically distributed along the movement direction of the connecting part 131. When the connecting part 131 is inserted into the clearance groove 234, the limiting protrusions 236 on both sides exert a squeezing force on the connecting part 131, keeping it in the center position of the clearance groove 234. When the connecting part 131 attempts to move towards the opening of the clearance groove 234, it needs to overcome the resistance of the limiting protrusions 236 on both sides, increasing the difficulty of the connecting part 131 accidentally disengaging.

[0052] The above technical solution enhances the resistance to movement of the connecting part 131. The two opposing groove walls' limiting protrusions 236 apply symmetrical resistance to the peripheral wall of the connecting part 131 from both sides, making the resistance more uniform on both sides when the connecting part 131 moves towards the opening of the clearance groove 234. This symmetrical design effectively avoids the displacement or wobbling of the connecting part 131 due to insufficient resistance on one side or uneven force, ensuring a more stable fit between the connecting part 13 and the connecting groove 233. Furthermore, the structure of the double limiting protrusions 236 further increases the operating force required for the connecting part 131 to disengage from the clearance groove 234, reducing the risk of accidental disengagement of the connecting part 131 due to external force or accidental contact, and improving the reliability and service life of the connection structure between the nose mask 10 and the headband 20.

[0053] For example, such as Figure 6 As shown, the nasal mask 10 includes a connecting seat 14 and a cover 15 that are spliced ​​together. The air inlet 11 is opened on the connecting seat 14, the air outlet 12 is opened on the cover 15, the connector 13 protrudes from the connecting seat 14, and the cover 15 is detachably connected to the connecting seat 14 so that the cover 15 can be replaced.

[0054] The split structure of the connecting seat 14 and the cover 15 can be connected by snaps, threads, or magnetic attraction. The air inlet 11 is located on the connecting seat 14, and the air outlet 12 is located on the cover 15. The gas flow path extends from the connecting seat 14 to the cover 15. In the split structure, the interface of the gas channel uses a sealing ring or interference fit. The connector 13 protrudes from the connecting seat 14 and forms a stable fit with the connecting strap 22 of the headgear 20, preventing the connection structure from being affected when the cover 15 is disassembled. The detachable connection between the cover 15 and the connecting seat 14 allows users to replace or clean the cover 15 separately, for example, through quick assembly and disassembly using a press-type snap or a rotary lock.

[0055] The connector 14 is injection molded from rigid plastic. Two symmetrically distributed connectors 13 protrude from the side wall of the connector 14, each connector 13 including a connecting part 131 and a mating part 132. The cover 15 is made of soft silicone material, and its bottom edge has an annular protrusion for a snap-fit ​​engagement with the connector 14. During use, the cover 15 can be quickly attached and detached from the connector 14 via the snap-fit ​​structure, facilitating replacement or cleaning. During cover 15 replacement, the connection between the connector 14 and the headpiece 20 remains unchanged; disassembly is completed simply by releasing the snap-fit ​​between the cover 15 and the connector 14. Therefore, users can select different shaped covers 15 according to their nasal shape, or replace them with covers 15 of different air outlet 12 sizes according to treatment needs.

[0056] The above technical solution enables a detachable design for the nasal mask 10's outer shell 15, allowing users to replace the shell 15 with different specifications or materials as needed. This design allows for the targeted selection of a shell 15 that fits the patient's nasal shape, improving wearing comfort. Simultaneously, the shell 15 can be individually disassembled for cleaning or replacement, enhancing the product's hygiene. This detachable design also reduces long-term usage costs, as only worn or contaminated sections of the shell 15 need to be replaced, rather than the entire nasal mask 10.

[0057] Specifically, the connector 13 and the connecting seat 14 are integrally formed; and / or, the connecting buckle 23 and the connecting band 22 are integrally formed. The integral forming of the connector 13 and the connecting seat 14 can be achieved through injection molding, for example, by integrally forming the connector 13 as an extension of the connecting seat 14. The integral forming of the connecting buckle 23 and the connecting band 22 can be achieved using hot pressing or co-extrusion processes, so that the base material of the connecting buckle 23 and the connecting band 22 form a continuous structure.

[0058] The connecting seat 14 is molded simultaneously with the connecting part 13 using injection molding, forming a single continuous structure; alternatively, the end of the connecting strip 22 is extruded to form a seamless integral structure with the connecting buckle 23. During injection molding, the bonding area between the connecting seat 14 and the connecting part 13 is formed synchronously in the same mold cavity, resulting in no parting line at the junction of the connecting part 131 and the sidewall of the connecting seat 14. The connecting buckle 23 and the connecting strip 22 are co-extruded, achieving molecular-level bonding between the matrix material of the connecting buckle 23 and the polymer material of the connecting strip 22 in the molten state.

[0059] By employing injection molding to manufacture the connector 13 and connector 14 as a single unit, the stress concentration problem caused by assembly gaps in separate connections is eliminated. The seamless design between the base of connector 13 and connector 14 makes it less prone to breakage when subjected to the tensile force of headgear 20. The integral molding of connector buckle 23 and connector strap 22 avoids the risks of stitch wear or adhesive aging that exist in traditional sewing or bonding processes.

[0060] The above technical solution eliminates the assembly gap between the connector 13 and the connector 14, avoiding stress concentration caused by the split connector 13 during long-term use; the integral molding structure of the connector buckle 23 and the connector strap 22 effectively prevents relative displacement between the connector buckle 23 and the connector strap 22 under external force, ensuring the sealing stability of the connection interface between the nose mask 10 and the headgear 20.

[0061] During the use of the nasal mask 10 ventilation structure, the ventilation tube 30 may shift due to gravity or external force, causing the nasal mask 10 to be unstable in its fit with the face, affecting airtightness and wearing comfort. At the same time, the shaking of the ventilation tube 30 may also increase the risk of the device falling off.

[0062] For example, such as Figure 1 As shown, the nasal mask 10 ventilation structure also includes a ventilation tube 30 and a connecting clip (not shown). One end of the ventilation tube 30 is connected to the air inlet 11, and the other end is used to connect to the air supply device. The connecting clip is connected to the outer wall of the ventilation tube 30 and is used to clamp to the external structure so that the ventilation tube 30 and the nasal mask 10 remain relatively fixed to the external structure.

[0063] The ventilator 30 and the air inlet 11 are sealed together via threads or quick-connect fittings to ensure leak-free gas transmission. The ventilator 30 may employ a corrugated structure to allow axial expansion and contraction, further reducing the impact of pipe tension on the position of the nasal mask 10. The connecting clip includes two symmetrically distributed clamping arms with anti-slip serrations molded on the inner surface. The ends of the clamping arms open and close via spring hinges. The clamping arms can grip external structures such as bed frame crossbars or clothing on the user, and the clamping force is transmitted to the outer wall of the ventilator 30 through a mechanical structure, forming multi-point fixed support. The clamping position adjustment function of the connecting clip allows users to reposition the fixing point according to changes in body position, such as moving the clamping point from the bed frame to the collar when switching between sitting and lying positions, maintaining the stability of the nasal mask 10 against the face.

[0064] The above technical solution achieves dynamic stability of the ventilation tube 30 during patient movement, effectively eliminating the positional displacement of the nasal mask 10 caused by the swinging of the ventilation tube 30. This structure maintains airtightness while significantly reducing the probability of accidental device detachment, improving the continuity of nighttime treatment.

[0065] Specifically, such as Figure 7 As shown, the outer wall of the vent pipe 30 is provided with a connecting ring 31, and the connecting member 13 is detachably connected to the connecting ring 31. The connecting ring 31 is fixed to the outer wall of the vent pipe 30, and can be integrally formed with the vent pipe 30. The connecting clip may be provided with a connecting ring, which is interlocked with the connecting ring 31 to achieve the connection between the connecting clip and the vent pipe 30. This simplifies the assembly and disassembly of the connecting clip and the vent pipe 30, and improves the convenience of assembling and disassembling the connecting clip.

[0066] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A nasal mask ventilation structure, characterized in that, include: A nasal mask, wherein the nasal mask is provided with an air inlet, an air outlet and a flow channel, the flow channel connecting the air inlet and the air outlet, the air inlet being used to allow external air to enter the flow channel, and the nasal mask being used for a person to wear in the nasal area so that the air in the flow channel can flow to the nasal cavity through the air outlet. A headband for wearing on the head, the headband comprising a headband body and two connecting straps, the two connecting straps being detachably connected to opposite side walls of the nose mask; One of the nose mask and the connecting strap is provided with a connector and the other is provided with a connecting groove, and the connector and the connecting groove are detachably engaged.

2. The nasal mask ventilation structure as described in claim 1, characterized in that, The connector protrudes from the side wall of the nose mask. The connector includes a connecting part and a mating part. One end of the connecting part is connected to the side wall of the nose mask, and the mating part is connected to the end of the connecting part away from the side wall of the nose mask. The end of the connecting strap is provided with a connecting buckle, and the connecting groove is formed in the connecting buckle. The connecting buckle has a first sidewall opposite to the nose mask and a second sidewall adjacent to the first sidewall. The opening of the connecting groove is provided in the second sidewall. The first sidewall has a clearance groove that communicates with the connecting groove. The opening of the clearance groove communicates with the opening of the connecting groove. The mating part enters or exits the connecting groove from the opening of the connecting groove, and the connecting part enters or exits the clearance groove from the opening of the clearance groove. The width of the mating part is greater than the width of the clearance groove to restrict the mating part from disengaging from the connecting groove through the clearance groove.

3. The nasal mask ventilation structure as described in claim 2, characterized in that, The peripheral wall of the connecting part is provided with a positioning rib, and the groove wall of the clearance groove is provided with a positioning groove, and the positioning rib and the positioning groove are positioned and engaged.

4. The nasal mask ventilation structure as described in claim 3, characterized in that, The positioning groove and the clearance groove are arranged opposite to each other, and the positioning rib protrudes from the side of the connecting part away from the opening of the positioning groove.

5. The nasal mask ventilation structure as described in claim 2, characterized in that, The wall of the clearance groove is provided with a limiting protrusion. The limiting protrusion is located between the connecting part and the opening of the clearance groove. The limiting protrusion abuts against the connecting part to increase the resistance when the connecting part moves toward the opening of the clearance groove.

6. The nasal mask ventilation structure as described in claim 5, characterized in that, The limiting protrusion is provided on both opposite walls of the clearance groove.

7. The nasal mask ventilation structure as described in claim 2, characterized in that, The nasal mask includes a connecting base and a cover that are spliced ​​together. The air inlet is located on the connecting base, the air outlet is located on the cover, the connector protrudes from the connecting base, and the cover is detachably connected to the connecting base so that the cover can be replaced.

8. The nasal mask ventilation structure as described in claim 7, characterized in that, The connector is integrally formed with the connector seat; and / or, the connector buckle is integrally formed with the connector strap.

9. The nasal mask ventilation structure as described in claim 1, characterized in that, The nasal mask ventilation structure also includes a ventilation tube and a connecting clip. One end of the ventilation tube is connected to the air inlet and the other end is used to connect to the air supply device. The connecting clip is connected to the outer wall of the ventilation tube and is used to clamp to the external structure so that the ventilation tube and the nasal mask remain relatively fixed to the external structure.

10. The nasal mask ventilation structure as described in claim 9, characterized in that, The outer wall of the vent pipe is provided with a connecting ring, and the connector is detachably connected to the connecting ring.

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