Nasal tampon catheter structure

Abstract

The application provides a nasal plug catheter structure, and particularly relates to the technical field of medical treatment. The nasal plug catheter structure comprises a nasal plug structure, a pipeline and a tube clamp face paste assembly. The nasal plug structure is provided with two opposite air inlets in a first direction and two parallel air outlets in a second direction. The pipeline is fixedly connected to the air inlets of the nasal plug structure and is in communication with the nasal plug structure. The tube clamp face paste assembly is arranged on the nasal plug structure. The air inlets and the air outlets of the nasal plug structure form a gas passage, the gas passage comprises a transition section in a bent shape, an included angle between at least one section of a middle part of the transition section and a section of a starting part of the transition section is an acute angle, and the section of the middle part of the transition section and the section of the starting part of the transition section are different in shape. By arranging the transition section in the gas passage of the nasal plug structure, the smoothness of gas flow is increased, the noise of the gas flow is effectively reduced, and the stability of the gas flow is improved.

Description

Technical Field

[0001] This application relates to the field of medical technology, and in particular to a nasal cannula structure. Background Technology

[0002] With the advancement of medical technology, nasal cannulas have been widely used in many fields, including medicine. As a medical device, nasal cannulas are used to deliver oxygen or therapeutic gases into a user's respiratory tract to assist or maintain normal respiratory function.

[0003] The nasal cannula helps clear mucus and other obstructions from the user's nasal cavity, ensuring smooth airflow. Inserted into the user's nasal cavity through a nasal passage, it establishes an effective gas delivery path. By clearing nasal congestion, the nasal cannula helps improve the user's breathing efficiency and reduce breathing difficulties.

[0004] However, in existing nasal cannula structures, the nasal cannula section is generally designed to be horizontally connected and the nasal insertion section is completely perpendicular to the horizontal direction. This causes airflow from both sides to converge into the nasal cannula at the connection point between the two airways, resulting in convection. In high-flow humidification therapy, the vortex generated by the high-velocity gas not only affects the flow rate and pressure of the airflow itself, but also causes the gas flowing out through the nasal insertion to vibrate and make noise, causing nasal discomfort to the user. Summary of the Invention

[0005] This application provides a nasal cannula structure. By incorporating a transition section within the gas channel of the nasal cannula structure, the smoothness of gas flow is increased. Even with increased airflow, no significant airflow conflict or vortex is generated, effectively reducing airflow noise and improving airflow stability. Furthermore, the airflow velocity exiting through the nasal cannula structure is more uniform, minimizing impact on the user's nasal cavity and significantly enhancing user comfort.

[0006] This application provides a nasal cannula structure, including:

[0007] The nasal plug structure has two opposing air inlets in the first direction and two parallel air outlets in the second direction.

[0008] The tubing is fixedly connected to the air inlet of the nasal plug structure, and the tubing and the nasal plug structure are connected.

[0009] A tube clamp surface patch assembly is disposed on the nasal plug structure;

[0010] A gas channel is formed between the air inlet and the air outlet of the nasal plug structure. The gas channel includes a bendable transition section. The angle between at least one cross section of the middle part of the transition section and the cross section of the beginning part of the transition section is an acute angle, and the cross section of the middle part of the transition section has a different shape than the cross section of the beginning part of the transition section.

[0011] The nasal cannula structure provided in this application includes a nasal cannula structure, a tubing, and a clamp-on surface patch assembly. The nasal cannula structure has two opposing air inlets in a first direction and two parallel air outlets in a second direction. The tubing is fixedly connected to the air inlets of the nasal cannula structure and is in communication with the nasal cannula structure. The clamp-on surface patch assembly is disposed on the nasal cannula structure. A gas channel is formed between the air inlets and outlets of the nasal cannula structure. The gas channel includes a bent transition section. At least one cross-section of the middle portion of the transition section forms an acute angle with the cross-section of the starting portion of the transition section, and the cross-sectional shape of the middle portion of the transition section is different from that of the starting portion. Thus, the nasal cannula structure provided in this application increases the smoothness of gas flow by setting a transition section in the gas channel of the nasal cannula structure. Even with increased airflow, it does not generate significant airflow conflict or vortices, effectively reducing airflow noise and improving airflow stability. Furthermore, the airflow velocity exiting through the nasal cannula structure is more uniform, resulting in less impact on the user's nasal cavity and greatly improving user comfort.

[0012] In one possible implementation, the gas passage further includes an inlet section and an outlet section, wherein the inlet section is connected to an inlet port and the outlet section is connected to an outlet port.

[0013] The beginning of the transition section is connected to the intake section, and the end of the transition section is connected to the exhaust section.

[0014] In one possible implementation, the angle between at least one cross section of the middle portion of the transition section and the cross section of the starting portion of the transition section is in the range of 25-35°.

[0015] When the air outlet section is positioned inside the user's nostril, the transition section is located in the nasolabial groove area of ​​the user's face, so that the nasal plug structure can extend naturally along the user's face.

[0016] In one possible implementation, at least one cross-section of the middle portion of the transition section is elliptical, and the cross-sections of the starting portion and the ending portion of the transition section are both circular.

[0017] The elliptical cross-section of the transition section gently conforms to the nasolabial fold area of ​​the user's face to reduce the air pressure of the nasal congestion structure.

[0018] In one possible implementation, at least one radial dimension in the air outlet section is greater than or equal to the radial dimension of the starting region of the air outlet section and the radial dimension of the ending region of the air outlet section, and the radial dimension of the air outlet section is always smaller than the size of the user's nostrils.

[0019] In one possible implementation, the radial dimension of the middle region of the air outlet section is greater than or equal to the radial dimension of the starting region of the air outlet section and the radial dimension of the ending region of the air outlet section, and the radial dimension of the air outlet section is always smaller than the size of the user's nostrils.

[0020] In one possible implementation, the radial dimension of the middle region of the exhaust section gradually changes towards the starting and ending regions of the exhaust section, and the inner surface of the exhaust section is a smooth and continuous curved surface.

[0021] In one possible implementation, the tube clamp patch assembly includes a connector located at the junction of the nasal plug structure and the tubing.

[0022] The connection part is provided with a receiving cavity, and the pipeline passes through the receiving cavity axially and is connected to the nose plug structure.

[0023] In one possible implementation, the connection includes a clamping portion having a first end and a second end, the first end being connected to the nasal plug structure and the second end being connected to the tubing, wherein in a second direction, the size of the first end is greater than or equal to the size of the second end.

[0024] In one possible implementation, the first end is provided with a first through hole and a second through hole that are disposed opposite to each other, and the outer surface of the end of the nose plug structure provided with the air inlet has a first protrusion and a second protrusion that are protruding.

[0025] The first protrusion mates with the first through hole, and the second protrusion mates with the second through hole.

[0026] In one possible implementation, the size of the first through hole is greater than or equal to the size of the first protrusion, and the size of the second through hole is greater than or equal to the size of the second protrusion, so that the first protrusion and the second protrusion can move in the first through hole and the second through hole, respectively.

[0027] In one possible implementation, the connecting part includes: a snap-fit ​​structure, which is snap-fitted to the nose plug structure.

[0028] The snap-fit ​​structure has two opposite snap-fit ​​parts at the end facing the nasal plug structure, and the outer surface of the end of the nasal plug structure with the air inlet has two snap-fit ​​grooves, and the snap-fit ​​parts and snap-fit ​​grooves are snap-fitted together.

[0029] In one possible implementation, the nasal plug structure has two protrusions on the outer surface of the end with the air inlet, and the protrusions abut against the inner wall of the tube clamp surface assembly.

[0030] In one possible implementation, the nasal plug structure has a first interlocking structure at one end with an air inlet, and the tube clamp surface assembly has a second interlocking structure that cooperates with the first interlocking structure.

[0031] The first interlocking structure and the second interlocking structure are detachably connected, and the nasal plug structure rotates relative to the tube clamp surface assembly within a preset angle range when the first interlocking structure and the second interlocking structure are connected.

[0032] The nasal cannula structure provided in this application increases the smoothness of gas flow, effectively reduces airflow noise, and improves airflow stability by setting a transition section in the gas channel of the nasal cannula structure and setting the angle of the transition section. Furthermore, the cross-sectional shape of the middle part of the transition section differs from that of the beginning part. Stable gas transition effectively reduces vibration at the point where the nasal cannula structure contacts the face, reducing user discomfort. In addition to the technical problems solved by this application, the technical features constituting the technical solution, and the beneficial effects brought about by these technical features, as described above, other technical problems solved by the nasal cannula structure provided in this application, other technical features included in the technical solution, and the beneficial effects brought about by these technical features will be further described in detail in the specific embodiments. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only a part of the embodiments of this application. These drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of the nasal cannula provided in the embodiments of this application;

[0035] Figure 2 This is a partial structural diagram of the nasal cannula structure provided in the embodiments of this application;

[0036] Figure 3 This is a schematic diagram of the nasal plug structure provided in the embodiments of this application;

[0037] Figure 4 This is a partially exploded view of the nasal cannula structure provided in an embodiment of this application;

[0038] Figure 5 This is a schematic diagram of the gas channel structure of the nasal cannula provided in the embodiments of this application;

[0039] Figure 6 This is a simulation diagram of a nasal cannula structure in related technologies;

[0040] Figure 7 This is a simulation diagram of another nasal cannula structure in related technologies;

[0041] Figure 8 This is a simulation diagram of another nasal cannula structure in related technologies;

[0042] Figure 9 A simulation diagram of another nasal cannula structure in the related technology;

[0043] Figure 10 This is a simulation diagram of the nasal cannula structure provided in the embodiments of this application;

[0044] Figure 11 A schematic diagram showing the connection between the tubing and the clamp surface patch assembly of the nasal plug catheter structure provided in this embodiment of the application;

[0045] Figure 12 This is a schematic diagram of the clip-on surface of the nasal plug catheter structure provided in the embodiments of this application;

[0046] Figure 13 An exploded view of the fitting of a clamp surface component and a nasal plug structure in one embodiment of the present application.

[0047] Figure 14 An exploded view showing another clamp-on surface assembly and nasal plug structure cooperating with the nasal plug structure provided in the embodiments of this application;

[0048] Figure 15 An exploded view of the clamp surface patch assembly of the nasal plug catheter structure provided in the embodiments of this application;

[0049] Figure 16 This is a side view of the clamp-on surface assembly and tubing of the nasal plug catheter structure provided in an embodiment of this application.

[0050] Explanation of reference numerals in the attached figures:

[0051] 100-Nasal cannula structure;

[0052] 200 - Nasal plug structure; 210 - Air inlet; 220 - Air outlet; 230 - Gas passage; 231 - Transition section; 2311 - Starting section; 2312 - Middle section; 2313 - Ending section; 232 - Air inlet section; 233 - Air outlet section; 2331 - Starting area; 2332 - Middle area; 2333 - Ending area; 240 - Connecting bridge; 250 - First protrusion; 260 - Second protrusion; 270 - Snap-fit ​​groove; 280 - Protrusion;

[0053] 300-pipeline;

[0054] 400-Pipe clamp surface-mount assembly; 410-Clamping part; 411-First end; 4111-First through hole; 4112-Second through hole; 412-Second end; 420-Snap-fit ​​structure; 421-Snap-fit ​​part; 430-Surface-mount structure; 431-Surface-mount component; 432-Adhesive component; 433-Elastic component; 440-Connecting part; 441-Receiving cavity;

[0055] 500-Adjustment structure;

[0056] 600 - Intake connector structure. Detailed Implementation

[0057] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0058] As described in the background art, in existing nasal cannula structures, the nasal cannula section is generally designed to be horizontally connected and the nasal insertion section is completely perpendicular to the horizontal direction. However, this causes the airflow from both sides to converge into the nasal cannula at the connection point between the two airways, resulting in convection. In high-flow humidification therapy, the vortex generated by the high-velocity gas not only affects the flow rate and pressure of the airflow itself, but also causes the gas flowing out through the nasal insertion to vibrate and generate noise, causing nasal discomfort to the user.

[0059] To address the aforementioned technical problems, this application provides a nasal plug catheter structure. The nasal plug catheter structure includes a nasal plug structure, a tubing, and a clamp-on surface adhesive assembly. The nasal plug structure has two opposing air inlets in a first direction and two parallel air outlets in a second direction. The tubing is fixedly connected to the air inlets of the nasal plug structure and is in communication with the nasal plug structure. The clamp-on surface adhesive assembly is disposed on the nasal plug structure. A gas channel is formed between the air inlets and outlets of the nasal plug structure. The gas channel includes a bent transition section. At least one cross-section of the middle portion of the transition section forms an acute angle with the cross-section of the starting portion of the transition section, and the cross-sectional shape of the middle portion of the transition section is different from that of the starting portion. Thus, the nasal plug catheter structure provided by this application increases the smoothness of gas flow by setting a transition section in the gas channel of the nasal plug structure. Even with increased airflow, it does not generate significant airflow conflict or vortices, effectively reducing airflow noise and improving airflow stability. In addition, the airflow through the nasal cannula is more uniform, resulting in less impact on the user's nasal cavity and greatly improving user comfort.

[0060] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0061] This application provides a nasal cannula structure. By incorporating a transition section within the gas channel of the nasal cannula structure, the smoothness of gas flow is increased. Even with increased airflow, significant airflow conflict and vortices are avoided, effectively reducing airflow noise and improving airflow stability. Furthermore, the airflow velocity exiting through the nasal cannula structure is more uniform, minimizing impact on the user's nasal cavity and significantly enhancing user comfort. The specific structure of the nasal cannula provided in this application embodiment will be described below with reference to the accompanying drawings.

[0062] refer to Figure 1 as well as Figure 2 This application provides a nasal cannula structure 100 in a first aspect. The nasal cannula structure 100 may include a nasal cannula structure 200, a tubing 300, and a clamp-on faceplate assembly 400. In this application embodiment, as... Figure 3As shown, the nasal plug structure 200 may have an air inlet 210 and an air outlet 220. In one possible implementation, the number of air inlets 210 and air outlets 220 may both be two. This embodiment of the application does not limit the number of air inlets 210 and air outlets 220. Specifically, the two air inlets 210 may be arranged opposite each other in a first direction of the nasal plug structure 200, and the two air outlets 220 may be arranged side-by-side in a second direction of the nasal plug structure 200. Furthermore, the air inlets 210 and air outlets 220 may be correspondingly arranged and connected.

[0063] It should be noted that, for ease of description, in the embodiments of this application, the first direction can be the length direction of the nasal plug structure 200, that is... Figure 3 The x-direction. The second direction can be the height direction of the nasal plug structure at 200, i.e. Figure 3 The y-direction in the equation. The first direction can be perpendicular to the second direction.

[0064] refer to Figure 4 Based on the above embodiments, the tube 300 can be inserted into the air inlet 210 of the nasal plug structure 200, thereby achieving a fixed connection between the tube 300 and the nasal plug structure 200, and the tube 300 and the nasal plug structure 200 are connected. Gas can enter the air inlet 210 of the nasal plug structure 200 along the tube 300 and flow out of the air outlet 220 of the nasal plug structure 200. In addition, the tube clip face patch assembly 400 is detachably disposed on the nasal plug structure 200. In one possible embodiment, one end of the tube clip face patch assembly 400 is fixedly connected to the connection between the nasal plug structure 200 and the tube 300, and the other end of the tube clip face patch assembly 400 is used to position and fit the user's face.

[0065] Continue to refer to Figure 3 Based on the above embodiments, a gas channel 230 can be formed between the air inlet 210 and the air outlet 220 of the nasal plug structure 200. In this embodiment, the nasal plug structure 200 has two completely symmetrical gas channels 230 in the first direction. This embodiment uses one of the single-sided air channels as an example.

[0066] In one possible implementation, such as Figure 5As shown, the gas passage 230 may include a transition section 231, which may be bent and disposed between the air inlet 210 and the air outlet 220 of the nasal plug structure 200. In this embodiment, the size of the transition section 231 and the direction of gas flow through the transition section 231 are both different. Specifically, the angle between at least one cross-section of the middle portion 2312 of the transition section 231 and the cross-section of the starting portion 2311 of the transition section 231 can be an acute angle. For example, the angle between at least one cross-section of the middle portion 2312 of the transition section 231 and the cross-section of the starting portion 2311 of the transition section 231 can be in the range of 25-35°, and the cross-sectional shape of the middle portion 2312 of the transition section 231 is different from that of the starting portion 2311 of the transition section 231.

[0067] In this way, by setting a transition section 231 in the gas channel 230 of the nasal plug structure 200 and setting the angle of the transition section 231, the smoothness of gas flow is increased, and no obvious airflow conflict and vortex will be generated when the air intake flow increases, effectively reducing airflow oscillation and airflow noise.

[0068] In this embodiment, the transition section 231 can be disposed on the outer contact surface between the nasal plug structure 200 and the user's philtrum, so that the nasal plug structure 200 will not have uneven local wall thickness due to the change of gas direction in the gas channel 230. At the same time, the stable gas transition can effectively reduce the vibration at the contact point between the nasal plug structure 200 and the face, and reduce the user's discomfort.

[0069] Continue to refer to Figure 3 Based on the above embodiments, the gas passage 230 may further include an inlet section 232 and an outlet section 233. The inlet section 232 may be connected to the inlet port 210, and the outlet section 233 may be connected to the outlet port 220. In this embodiment, the starting portion 2311 of the transition section 231 may be connected to the inlet section 232, and the ending portion 2313 of the transition section 231 may be connected to the outlet section 233, thereby forming the gas passage 230 from the inlet section 232, the transition section 231, and the outlet section 233.

[0070] In the embodiments of this application, it can be understood that when the air outlet section 233 is positioned inside the user's nostril, the transition section 231 can be located in the nasolabial groove area of ​​the user's face, so that the nasal plug structure 200 can extend naturally along the user's face, improving the comfort and stability of wearing the nasal plug cannula structure 100.

[0071] Continue to refer to Figure 3Based on the above embodiment, a connecting bridge 240 may be provided between the two air intake sections 232. The two air intake sections 232 may be completely symmetrical along the connecting bridge 240, which can be used to block the two air intake sections 232 from communicating with each other. It is understood that when a user wears the nasal cannula structure 100 on their face, the connecting bridge 240 will be placed at the philtrum (the area between the nose and upper lip). To make the connecting bridge 240 fit the shape of the philtrum more closely, and to prevent the upper lip from pressing against the nasal cannula structure 100 due to facial expressions such as crying or laughing, the two sides of the connecting bridge 240 in the first direction are designed to gradually expand and extend towards the air intake section 232, as shown in the figure. The structure of the connecting bridge 240 presents a crescent-shaped bulge, making the nasal cannula structure 100 fit more snugly and comfortably when worn, and also avoiding the wearing effect being affected by changes in the user's facial expressions.

[0072] It is also understandable that in high-flow-rate humidified breathing therapy, the vortex generated by the high-velocity gas not only affects the flow rate and pressure of the airflow itself, but also causes the gas flowing out through the nasal cannula structure 100 to vibrate and make noise, causing nasal discomfort to the user. The connecting bridge 240 can prevent the airflow from the two air intake sections 232 from converging into the gas channel 230 and causing convection conflict at the connecting bridge 240 in the middle position.

[0073] Continue to refer to Figure 5 Based on the above embodiments, in one possible implementation, at least one cross-section of the middle portion 2312 of the transition segment 231 can be elliptical, while the cross-sections of the starting portion 2311 and the ending portion 2313 of the transition segment 231 can both be circular. It is understood that the elliptical cross-section of the transition segment 231 can smoothly conform to the nasolabial fold area of ​​the user's face, increasing the contact area and comfort with the face, thereby reducing the exhaust pressure and airflow noise of the nasal plug structure 200.

[0074] In this embodiment, it is understood that the intake direction of the intake section 232 is the same as the first direction, and the air passage of the intake section 232 is consistent with the inflow direction of the airflow through the pipe 300. The direction of the gas changes after passing through the air passage of the transition section 231, and since the diameter of the air passage of the intake section 232 is larger than that of the air passage of the outlet section 233 is smaller, the diameter of the air passage changes along with the direction change in the transition section 231.

[0075] It is understood that since the size and direction of the gas inflow into the intake section 232 remain almost constant, the cross-section of the intake section 232 can be the same as the cross-section of the starting portion 2311 of the transition section 231. For example, both the cross-section of the intake section 232 and the cross-section of the starting portion 2311 of the transition section 231 can be circular. Alternatively, the transition section 231 may change in size and direction to allow the gas to flow more smoothly within the gas passage 230. For example, the cross-sections of the starting portion 2311 and the ending portion 2313 of the transition section 231 can be circular, while the cross-section of the middle portion 2312 of the transition section 231 can be elliptical.

[0076] Based on the above embodiments, the angle between at least one cross-section of the middle portion 2312 of the transition segment 231 and the cross-section of the starting portion 2311 of the transition segment 231 can be in the range of 25-35°. For example, the angle between them can be 28°. In this embodiment, after testing and simulation verification, the dimensional ratio of the cross-sectional diameter of the starting portion 2311 of the transition segment 231 to the major axis length of the cross-section of the middle portion 2312 of the transition segment 231, the minor axis length of the cross-section of the middle portion 2312 of the transition segment 231, and the cross-sectional diameter of the ending portion 2313 of the transition segment 231 can be set in the range of 6~7:4.8~5.3:3.8~4.2:3. For example, the ratio of the cross-sectional diameter of the starting portion 2311 of the transition section 231 to the major axis length of the cross-section of the middle portion 2312 of the transition section 231, the minor axis length of the cross-section of the middle portion 2312 of the transition section 231, and the cross-sectional diameter of the ending portion 2313 of the transition section 231 can be 6.5:5:4:3. This ensures smoother changes in direction and size of the gas as it flows through the gas channel 230, and reduces pressure and noise at the outlet 220 of the nasal plug structure 200.

[0077] In related technologies, the gas passage of nasal plugs is generally a through-type structure, and the outlet section of the gas passage is completely perpendicular to the horizontal direction. However, this causes convectional conflict to occur at the connection point between the two airways when gas from both sides simultaneously enters the gas passage. In high-flow-rate humidified breathing therapy, the vortex generated by the high-velocity gas not only affects the gas's own flow rate and pressure but also causes oscillations and noise in the gas flowing out through the nasal plug structure, causing nasal discomfort for the user. Figure 6 As shown, computer simulations reveal the vortices generated by the opposing airflow in the gas channel structure of the relevant technology.

[0078] Furthermore, even when the nasal plug structure uses a non-through structure without changing the vertical connection between the air outlet and inlet sections, the rapid change in direction of the high-speed airflow as it passes through the air passage will still cause a noticeable impact. For example... Figure 7 As shown in the figure, computer simulation shows that after the gas flows in through the inlet section, a significant airflow vortex is generated at the connection between the beginning of the outlet section and the horizontal air passage, and the gas velocity entering the outlet section increases.

[0079] Furthermore, by changing the vertical connection between the exhaust section and the horizontal intake section to include a transition section, and by changing the structure of the transition section with different shapes and sizes, or by changing the angle between the transition section and the vertical direction, and conducting tests and simulations, such as... Figure 8 As shown, it can be observed that if the cross-section of the transition section remains circular throughout, significant vortices will be generated at the initial cross-section of the transition section, disrupting airflow stability. For example... Figure 9 As shown, if the angle between the transition section and the vertical direction is increased, the gas will also generate a certain vortex when it flows through the beginning of the outlet section, causing a surge in local gas velocity in the outlet section, thereby disrupting the airflow stability.

[0080] In the embodiments of this application, it can be understood that, as Figure 10 As shown, by changing the structure of the transition section 231 with different shapes and sizes, or by changing the angle between the transition section 231 and the second direction, and conducting tests and simulations, it can be seen that, compared with related technologies, while ensuring the air intake flow rate, the gas flow rate can be concentrated at the air outlet 220 of the nasal plug structure 200, and the gas flow rate at the air outlet 220 is reduced, so it will not cause impact on the user's nasal cavity. In this way, even if the air intake flow rate increases, there will be no obvious airflow conflict or vortex, effectively reducing airflow noise and improving airflow stability.

[0081] Continue to refer to Figure 3 Based on the above embodiments, the air outlet section 233 can be protruding from the nasal plug structure 200 in the second direction, and the air outlet 220 is bent toward the user. In one possible implementation, the air outlet section 233 has the same air outlet direction as the second direction, and in order to better fit the structure inside the user's nasal cavity, the air outlet section 233 can be tilted toward the center along with the nasal plug structure 200 and bent toward the user at a certain angle, thereby avoiding causing nasal discomfort to the user.

[0082] Continue to refer to Figure 5 Based on the above embodiments, at least one radial dimension of the air outlet section 233 can be greater than or equal to the radial dimension of the starting region 2331 and the radial dimension of the ending region 2333 of the air outlet section 233, and the radial dimension of the air outlet section 233 is always smaller than the size of the user's nostril. It is understood that the fact that the radial dimension of the air outlet section 233 is always smaller than the size of the user's nostril means that the overall configuration of the air outlet section 233 does not form a sealed connection with the user's nostril, but rather can be used to reduce the pressure of the flowing gas and suppress the generation of eddies.

[0083] Continue to refer to Figure 5 Based on the above embodiments, further, the radial dimension of the middle region 2332 of the air outlet section 233 can be greater than or equal to the radial dimension of the starting region 2331 and the ending region 2333 of the air outlet section 233, and the radial dimension of the air outlet section 233 is always smaller than the size of the user's nostrils. In one possible implementation, the air outlet section 233 can be divided into three equal-length airways of different diameters. The cross-sections of the starting region 2331, the middle region 2332, and the ending region 2333 of the air outlet section 233 can all be circular, but the radial dimensions of each cross-section are different. For example, the dimensional ratio of the cross-section of the starting region 2331 of the outlet section 233, one cross-section of the middle region 2332 of the outlet section 233, another cross-section of the middle region 2332 of the outlet section 233, and the cross-section of the ending region 2333 of the outlet section 233 can be 1:1.05:1.05:0.8. In this way, as the gas flows through the outlet section 233, by changing the dimensions of different cross-sections of the outlet section 233, a certain buffer space can be provided for the gas flowing into the outlet section 233, thereby guiding the gas to flow smoothly and evenly out of the outlet 220, effectively achieving the function of gas buffering and reducing the local pressure in the gas path.

[0084] In this embodiment, it is understood that the radial dimension of the middle region 2332 of the air outlet section 233 gradually changes towards the starting region 2331 and the ending region 2333 of the air outlet section 233, and the inner surface of the air outlet section 233 is a smooth and continuous curved surface. This allows for more uniform airflow through the air outlet section 233, reducing the impact on the user's nasal cavity and improving wearing comfort.

[0085] In another possible implementation, if the designed nasal cannula structure 100 needs to be used under conditions of higher flow rate, for example, the gas flow rate can be greater than or equal to 30 L / min, the length of the nasal cannula structure 200 can be set to be longer, and the inner diameter of the gas channel 230 can be larger. It is understood that the air outlet section 233 can also be divided into four equal segments of different diameters. For example, the size ratio of the four air channel cross-sections of the air outlet section 233 can be set in the range of 1:1.08:1.13 to 1.17:1.05:1. Simulation verification shows that this ratio can provide better gas buffering effect under the condition of a larger gas channel 230, improve gas stability, and reduce the impact on the user's nasal cavity.

[0086] refer to Figure 11Based on the above embodiments, the tube clamp face patch assembly 400 may include a connecting portion 440. The connecting portion 440 may be located at the connection between the nose plug structure 200 and the tube 300. In one possible implementation, the connecting portion 440 may have a receiving cavity 441, through which the tube 300 may axially pass and connect to the nose plug structure 200.

[0087] Continue to refer to Figure 11 Based on the above embodiments, the connecting portion 440 may include a clamping portion 410. The clamping portion 410 can clamp at the connection between the nose plug structure 200 and the tube 300. In one possible implementation, combined with... Figure 4 The clamping part 410 may have a first end 411 and a second end 412. The first end 411 can be connected to the nose plug structure 200, while the second end 412 can be connected to the tube 300. It is understood that, in the second direction, the size of the first end 411 is greater than or equal to the size of the second end 412. Since the tube 300 is inserted into the air inlet 210 of the nose plug structure 200, and the diameter of the tube 300 is less than or equal to the diameter of the air inlet 210 of the nose plug structure 200, the size of the first end 411 of the clamping part 410 is greater than or equal to the size of the second end 412, thereby facilitating the clamping part 410's clamping of the nose plug structure 200 and the tube 300.

[0088] Continue to refer to Figure 11 Based on the above embodiment, the first end 411 of the clamping part 410 may have a first through hole 4111 and a second through hole 4112. The first through hole 4111 and the second through hole 4112 may be arranged opposite to each other. Accordingly, as... Figure 4 As shown, the outer surface of the end of the nasal plug structure 200 with the air inlet 210 may have a first protrusion 250 and a second protrusion 260. The first protrusion 250 and the second protrusion 260 protrude from the outer surface of the nasal plug structure 200. It can be understood that the first through hole 4111 and the second through hole 4112 are respectively provided corresponding to the first protrusion 250 and the second protrusion 260, so that the first protrusion 250 cooperates with the first through hole 4111, and the second protrusion 260 cooperates with the second through hole 4112.

[0089] In the embodiments of this application, such as Figure 12As shown, the first through hole 4111 and the second through hole 4112 can be configured with asymmetrical shapes. For example, one of the first through hole 4111 and the second through hole 4112 can be circular, while the other can be teardrop-shaped. Of course, in some other embodiments, one of the first through hole 4111 and the second through hole 4112 can also be a gourd-shaped structure, while the other can be a racetrack-shaped structure. This application does not impose limitations on the embodiments herein. Correspondingly, the first protrusion 250 and the second protrusion 260 on the nose plug structure 200 can also be configured with the same shape as the first through hole 4111 and the second through hole 4112. In this way, during the installation of the tube clamp faceplate assembly 400, the asymmetrical structure ensures consistency in the installation direction, providing a foolproof function, indicating the installation direction, and avoiding incorrect installation.

[0090] Based on the above embodiments, it can also be understood that the first through hole 4111 and the second through hole 4112 can also be configured with the same shape, and this application embodiment does not impose any limitations. In one possible implementation, the size of the first through hole 4111 and the second through hole 4112 can be greater than or equal to the size of the first protrusion 250 and the second protrusion 260, thereby allowing the first protrusion 250 and the second protrusion 260 to move in the first through hole 4111 and the second through hole 4112, respectively. In this way, the position of the nasal plug structure 200 can be adjusted from the perspective of the user's face without removing the tube clip face patch assembly 400, thereby improving the user's wearing comfort and oxygen inhalation comfort.

[0091] refer to Figure 13 Based on the above embodiments, in another possible implementation, the connecting portion 440 may include a snap-fit ​​structure 420. The snap-fit ​​structure 420 can be snap-fitted to the nose plug structure 200. In one possible implementation, the end of the snap-fit ​​structure 420 facing the nose plug structure 200 may have a snap-fit ​​portion 421. The number of snap-fit ​​portions 421 can be two, and this application embodiment is not limited thereto. In this application embodiment, the two snap-fit ​​portions 421 can be arranged opposite to each other. Correspondingly, the outer surface of the end of the nose plug structure 200 with the air inlet 210 may have two snap-fit ​​grooves 270. It is understood that the snap-fit ​​portions 421 and the snap-fit ​​grooves 270 are correspondingly arranged, thereby enabling the snap-fit ​​portions 421 and the snap-fit ​​grooves 270 to be snap-fitted together.

[0092] Based on the above embodiment, the snap-fit ​​groove 270 can be configured as a "U" shape. Thus, when the tube clamp surface patch assembly 400 contacts the nose plug structure 200, the snap-fit ​​portion 421 can hook onto the snap-fit ​​groove 270 of the nose plug structure 200, thereby achieving the connection between the snap-fit ​​portion 421 and the snap-fit ​​groove 270. Furthermore, the snap-fit ​​portion 421 can abut against the side wall of the snap-fit ​​groove 270, thereby restricting the rotation of the snap-fit ​​portion 421 within the snap-fit ​​groove 270, thus achieving a positioning function.

[0093] refer to Figure 14 Based on the above embodiments, in another possible implementation, the outer surface of the end of the nose plug structure 200 where the air inlet 210 is located may have two protrusions 280. Exemplarily, the two protrusions 280 may be located on the same horizontal line and extend in opposite directions on the outer surface of the nose plug structure 200, thereby making the cross-section of the air inlet section 232 of the nose plug structure 200 triangular. Thus, when the tube clamp adhesive assembly 400 is connected to the nose plug structure 200, the protrusions 280 of the nose plug structure 200 can abut against the sidewall of the opening of the tube clamp adhesive assembly 400, causing the tube clamp adhesive assembly 400 to contact the air inlet 210 of the nose plug structure 200 at a fixed angle, thus restricting the rotation of the tube clamp adhesive assembly 400.

[0094] Based on the above embodiments, in another possible implementation, a first interlocking structure (not shown in the figure) may be provided on the end of the nasal plug structure 200 where the air inlet 210 is located, and correspondingly, a second interlocking structure (not shown in the figure) may be provided on the tube clamp surface assembly 400. The first interlocking structure can cooperate with the second interlocking structure.

[0095] In one possible implementation, the first interlocking structure can be detachably connected to the second interlocking structure. It is understood that, with the first and second interlocking structures connected, the nose plug structure 200 can rotate relative to the clip-on face patch assembly 400 within a preset angle range. Thus, by rotating the angle between the nose plug structure 200 and the clip-on face patch assembly 400, it is possible to adapt to different users' facial contours, improving user comfort and adaptability.

[0096] refer to Figure 15 as well as Figure 16Based on the above embodiments, the tube clamp face patch assembly 400 may further include a face patch structure 430. It is understood that the face patch structure 430 is used to position and conform to the user's face. Further, the face patch structure 430 may include a face patch 431, an adhesive 432, and an elastic element 433. In one possible implementation, the adhesive 432 may be double-sided adhesive, and the elastic element 433 may be a dressing hydrocolloid. The face patch 431, adhesive 432, and elastic element 433 may have the same shape; this embodiment is not limited thereto.

[0097] Continue to refer to Figure 15 as well as Figure 16 Based on the above embodiments, in one possible implementation, the adhesive surfaces on both sides of the adhesive member 432 are bonded to the faceplate member 431 and the elastic member 433 respectively, thereby connecting the faceplate member 431, the adhesive member 432, and the elastic member 433 to form a surface structure 430. The faceplate member 431 and the elastic member 433 can have identical shapes, while the outer contour of the adhesive member 432 can be less than or equal to the shapes of the faceplate member 431 and the elastic member 433. This ensures that when assembling the surface structure 430, the adhesive member 432 can be uniformly bonded to the faceplate member 431 and the elastic member 433.

[0098] Continue to refer to Figure 15 as well as Figure 16 Based on the above embodiments, exemplarily, the end of the face patch 431 facing the nasal plug structure 200 can be arranged parallel to the direction of the inlet section of the nasal plug structure 200, while the end of the face patch 431 facing the tube 300 can extend along the first direction and bend away from the outlet section of the nasal plug structure 200. In one possible implementation, the bending angle can be 15-25°, exemplarily, the bending angle can be 20°. This ensures that the tube clamp face patch assembly 400 fits the face better when in contact with the user's face, and the tube 300 can also bend more naturally along the bending arc of the face patch 431.

[0099] In one possible implementation of this application, the interior of the pipe 300 may have a support structure, which, exemplarily, may be a spring-threaded pipe. It is understood that the pipe body of the pipe 300 may be made of a material that is permeable to water but impermeable to air; this application does not impose any limitations on this.

[0100] Continue to refer to Figure 1Based on the above embodiments, the nasal cannula structure 100 may further include an adjustment structure 500. The adjustment structure 500 can be sleeved on the tube 300. It is understood that the adjustment structure 500 can be used to adjust the length of the tube 300. Thus, after the nasal cannula structure 200 is inserted into the user's nasal cavity, the tube 300 can be arranged around the user's neck, and the adjustment structure 500 can slide back and forth on the tube 300 until it is fixed behind the user's neck, adapting to different users.

[0101] Continue to refer to Figure 1 Based on the above embodiments, the nasal cannula structure 100 may further include an air inlet connector structure 600. The air inlet connector assembly can be connected to the tubing 300. It is understood that gas can pass through the air inlet connector assembly and into the tubing 300, thereby allowing the gas to enter the user's nasal cavity along the nasal cannula structure 200.

[0102] In this embodiment, the nasal cannula structure 100 provided in this application increases the smoothness of gas flow by setting a transition section 231 in the gas channel 230 of the nasal cannula structure 200. Even with an increased airflow rate, no significant airflow conflict or vortex is generated, effectively reducing airflow oscillation and noise. Furthermore, the airflow velocity exiting through the nasal cannula structure 100 is more uniform, resulting in less impact on the user's nasal cavity and greatly improving user comfort.

[0103] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0104] It should be noted that phrases such as "in specific implementations," "in some embodiments," "in this embodiment," and "exemplarily" in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0105] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0106] It should be readily understood that “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0107] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0108] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A nasal cannula structure, characterized in that, include: The nasal plug structure (200) has two opposing air inlets (210) in a first direction and two parallel air outlets (220) in a second direction. A conduit (300) is fixedly connected to the air inlet (210) of the nasal plug structure (200), and the conduit (300) and the nasal plug structure (200) are in communication. A tube clamp surface patch assembly (400) is disposed on the nasal plug structure (200); A gas passage (230) is formed between the air inlet (210) and the air outlet (220) of the nasal plug structure (200). The gas passage (230) includes a bent transition section (231). At least one cross-section of the middle portion (2312) of the transition section (231) forms an acute angle with the cross-section of the starting portion (2311) of the transition section (231). The cross-section of the middle portion (2312) of the transition section (231) has a different cross-sectional shape than that of the starting portion (2311) of the transition section (231). The gas passage (230) further includes an inlet section (232) and an outlet section (233), wherein the inlet section (232) is connected to the inlet (210), and the outlet section (233) is connected to the outlet (220); The starting portion (2311) of the transition section (231) is connected to the intake section (232), and the ending portion (2313) of the transition section (231) is connected to the exhaust section (233). At least one of the air outlet sections (233) has a radial dimension greater than the radial dimension of the starting region (2331) and the ending region (2333) of the air outlet section (233), and the radial dimension of the air outlet section (233) is always smaller than the size of the user's nostrils.

2. The nasal cannula structure according to claim 1, characterized in that, The angle between at least one cross section of the middle portion (2312) of the transition section (231) and the cross section of the starting portion (2311) of the transition section (231) is in the range of 25-35°. When the air outlet section (233) is positioned inside the user's nostril, the transition section (231) is located in the nasolabial groove area of ​​the user's face so that the nasal plug structure (200) can extend naturally along the user's face.

3. The nasal cannula structure according to claim 2, characterized in that, At least one cross section of the middle part (2312) of the transition segment (231) is elliptical, and the cross section of the starting part (2311) and the ending part (2313) of the transition segment (231) are both circular. The elliptical cross section of the transition section (231) gently conforms to the nasolabial groove area of ​​the user's face to reduce the exhaust pressure of the nasal plug structure (200).

4. The nasal cannula structure according to claim 3, characterized in that, The radial dimension of the middle region (2332) of the air outlet section (233) is greater than or equal to the radial dimension of the starting region (2331) and the radial dimension of the ending region (2333) of the air outlet section (233), and the radial dimension of the air outlet section (233) is always smaller than the size of the user's nostrils.

5. The nasal cannula structure according to claim 4, characterized in that, The radial dimension of the middle region (2332) of the air outlet section (233) gradually changes towards the starting region (2331) and the ending region (2333) of the air outlet section (233), and the inner surface of the air outlet section (233) is a smooth and continuous curved surface.

6. The nasal cannula structure according to any one of claims 1-5, characterized in that, The tube clamp face patch assembly (400) includes a connecting part (440) located at the connection between the nasal plug structure (200) and the tube (300); The connecting part (440) is provided with a receiving cavity (441), and the pipeline (300) is axially inserted through the receiving cavity (441) and connected to the nasal plug structure (200).

7. The nasal cannula structure according to claim 6, characterized in that, The connecting part (440) includes a clamping part (410) having a first end (411) and a second end (412), the first end (411) being connected to the nasal plug structure (200) and the second end (412) being connected to the conduit (300), wherein in the second direction, the size of the first end (411) is greater than or equal to the size of the second end (412).

8. The nasal cannula structure according to claim 7, characterized in that, The first end (411) has a first through hole (4111) and a second through hole (4112) that are disposed opposite to each other. The outer surface of the end of the nose plug structure (200) with an air inlet (210) has a first protrusion (250) and a second protrusion (260) that are disposed protrudingly. The first protrusion (250) cooperates with the first through hole (4111), and the second protrusion (260) cooperates with the second through hole (4112).

9. The nasal cannula structure according to claim 8, characterized in that, The size of the first through hole (4111) is greater than or equal to the size of the first protrusion (250), and the size of the second through hole (4112) is greater than or equal to the size of the second protrusion (260), so that the first protrusion (250) and the second protrusion (260) can move in the first through hole (4111) and the second through hole (4112) respectively.

10. The nasal cannula structure according to claim 6, characterized in that, The connecting part (440) includes: a snap-fit ​​structure (420) which is snap-fitted to the nose plug structure (200); The snap-fit ​​structure (420) has two opposite snap-fit ​​portions (421) at one end facing the nose plug structure (200), and the outer surface of the end of the nose plug structure (200) with an air inlet (210) has two snap-fit ​​grooves (270), and the snap-fit ​​portions (421) and the snap-fit ​​grooves (270) are snap-fit ​​connected.

11. The nasal cannula structure according to claim 6, characterized in that, The nasal plug structure (200) has two protrusions (280) on the outer surface of one end with an air inlet (210), and the protrusions (280) abut against the inner wall of the tube clamp surface assembly (400).

12. The nasal cannula structure according to claim 6, characterized in that, The nasal plug structure (200) has a first interlocking structure on one end with an air inlet (210), and the tube clamp surface patch assembly (400) has a second interlocking structure that cooperates with the first interlocking structure. The first interlocking structure and the second interlocking structure are detachably connected, and the nasal plug structure (200) rotates relative to the tube clamp surface assembly (400) within a preset angle range when the first interlocking structure and the second interlocking structure are connected.

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