Breathing pipeline and breathing equipment

Abstract

The utility model relates to the technical field of breathing pipelines, in particular to a breathing pipeline and breathing equipment. The breathing pipeline comprises a thin film outer pipe and a metal supporting rib. The thin film outer pipe comprises a water permeable pipe wall which is used for achieving exchange of water vapor between the inner side and the outer side of the thin film outer pipe. The metal supporting rib is of a spiral filiform structure and is fixed in the thin film outer pipe so as to provide flexible supporting. The film outer pipe is small in strength and easy to deform. The metal supporting ribs are specifically of a spiral filiform structure, and good flexibility can be achieved while the supporting effect on the thin film outer pipe is guaranteed. And the metal supporting ribs are supported on the inner side of the thin film outer pipe, so that the metal supporting ribs can be prevented from hooking the outside.

Description

Technical Field

[0001] This utility model relates to the field of respiratory tubing technology, and in particular to a respiratory tubing and respiratory device. Background Technology

[0002] Currently, an increasing number of respiratory devices are being developed and used in the treatment of chronic respiratory diseases. Examples include non-invasive respiratory support devices for treating chronic obstructive pulmonary disease (COPD) or obstructive sleep apnea syndrome, and high-flow oxygen therapy devices for providing oxygen therapy or respiratory support. These devices deliver relatively dry gas, requiring the mixing of water vapor during delivery. However, water vapor easily condenses on the inner surface of the breathing tubing, leading to choking, coughing, or even suffocation.

[0003] To address this issue, existing breathing tubing typically utilizes pipes that can absorb or exude condensate, with reinforcing ribs added to the outside or foamed materials used for the outer wall to enhance strength. However, this method results in poor flexibility and conformability, and the external reinforcing ribs can snag on external structures during use, making it extremely inconvenient and negatively impacting the patient's experience. Utility Model Content

[0004] This utility model provides a breathing tubing and breathing device to overcome the above-mentioned problems.

[0005] The breathing tubing described in this embodiment of the utility model includes a membrane outer tube and a metal support rib;

[0006] The outer membrane tube includes a water-permeable wall, which is used to facilitate the exchange of water vapor between the inner and outer sides of the outer membrane tube.

[0007] The metal support rib is a spiral filament structure, and the metal support rib is fixed to the inner surface of the outer tube of the membrane to provide flexible support, wherein the inner surface is the surface of the outer tube of the membrane facing the cavity of the outer tube of the membrane.

[0008] Optionally, the permeable pipe wall is attached to at least a portion of the outer peripheral surface of each turn of the metal support rib, so that the surface of the breathing tube forms spirally raised joints.

[0009] Optionally, the outer membrane tube is an integrally extruded structure.

[0010] Optionally, the outer tube of the film is a spiral wound structure.

[0011] Optionally, the overlapping areas of two adjacent turns of the outer membrane tube are both attached to the radially outward side of the corresponding turn of the metal support rib.

[0012] Optionally, the overlapping areas of two adjacent turns of the outer membrane tube are respectively wrapped around the inner and outer sides of the metal support rib, so as to clamp the corresponding turns of the metal support rib inside the outer membrane tube.

[0013] Optionally, the breathing circuit may also include a membrane inner tube;

[0014] The inner membrane tube is disposed inside the metal support rib and is fixedly connected to the metal support rib, and a gap layer is left between the inner membrane tube and the outer membrane tube.

[0015] Optionally, the breathing circuit also includes a heating wire for heating the breathing circuit.

[0016] This utility model embodiment also provides a breathing device, which includes any of the breathing tubing described above.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] The breathing tubing described in this embodiment of the utility model includes a membrane outer tube and a metal support rib, with the metal support rib fixed to the inner side of the membrane outer tube.

[0019] Because of its relatively thin wall, the outer membrane tube has low strength and is prone to deformation. Metal support ribs fixed to the inside of the outer membrane tube provide excellent flexible support. Specifically, the metal support ribs have a spiral filament structure, which ensures effective support while maintaining good flexibility. Therefore, using this structure in the breathing tubing effectively improves its strength while maintaining a certain degree of flexibility and conformability.

[0020] In addition, since the membrane outer tube is easily deformable, the breathing tubing using the membrane outer tube can further improve its flexibility and adaptability; the metal support ribs supported on the inside of the membrane outer tube can also prevent the metal support ribs from snagging on external structures.

[0021] In summary, the above-mentioned structure of the breathing tubing can improve its flexibility and adaptability while ensuring its own strength, and can also prevent snagging with the outside world, thus making it easy to use and greatly improving the patient's user experience. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 these drawings without creative effort.

[0023] Figure 1 This is an isometric view of the breathing tubing described in Embodiment 1 of this utility model;

[0024] Figure 2 This is a side cross-sectional view of the breathing tubing described in Embodiment 1 of this utility model;

[0025] Figure 3 This is a cross-sectional view of the breathing tubing described in Embodiment 1 of this utility model;

[0026] Figure 4 This is a cross-sectional view of the joint described in Embodiment 1 of this utility model;

[0027] Figure 5 yes Figure 4 Another implementation method;

[0028] Figure 6 This is a cross-sectional view of the joint described in Embodiment 2 of this utility model;

[0029] Figure 7 yes Figure 6 Another implementation method;

[0030] Figure 8 This is a cross-sectional view of the joint described in Embodiment 3 of this utility model;

[0031] Figure 9 yes Figure 8 Another implementation method;

[0032] Figure 10 This is a partial cross-sectional view of the breathing tubing described in Embodiment 4 of this utility model;

[0033] Figure 11 This is a schematic diagram of the structure of the breathing device described in this utility model;

[0034] Figure 12 yes Figure 11 Schematic diagram of the middle nasal oxygen cannula;

[0035] Figure 13 yes Figure 12 A diagram illustrating its usage;

[0036] Reference numerals: 1. Nasal oxygen cannula; 2. Breathing tubing; 3. Outer membrane tube; 4. Metal support rib; 5. Nasal plug; 6. Interface; 7. Sliding block; 8. Gas delivery line; 9. Gas supply equipment; 10. Humidifier; 11. Second air inlet; 12. Water inlet; 13. Second air outlet; 14. Water tank; 15. Heating base plate; 16. Gas source; 17. First air inlet; 18. First air outlet; 19. Fan; 20. Flow meter; 21. Hygrometer; 22. Inner membrane tube; 23. Void layer; 24. Joint. Detailed Implementation

[0037] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Embodiment 1 of this utility model:

[0039] Embodiment 1 of this utility model provides a breathing tubing 2. This breathing tubing 2 can be used in breathing components such as nasal oxygen tubes, nasal masks, and full-face masks, and can also be used as a gas transmission tubing for portable waterless humidifiers.

[0040] The shape of breathing tubing 2 can be referenced. Figure 1 As shown. For reference. Figure 2 , Figure 3 As shown, the breathing tubing 2 specifically includes a membrane outer tube 3 and a metal support rib 4. The membrane outer tube 3 includes a water-permeable wall made of a microporous membrane material capable of permeating water vapor, to facilitate the exchange of water vapor from the inside to the outside of the membrane outer tube 3, and from the outside to the inside of the membrane outer tube 3, while also ensuring sufficient gas pressure within the breathing tubing 2. The aforementioned material can specifically be thermoplastic polyurethane rubber, thermoplastic elastomer, or ethylene-vinyl acetate copolymer, etc. The exchange of water vapor between the inside and outside of the membrane outer tube 3 can be caused by the concentration difference, the pressure difference, or the temperature difference. When excessively humidified gas passes through breathing tubing 2, due to factors such as concentration, pressure, and temperature differences between the inside and outside of the membrane outer tube 3, some of the excess water vapor can be exchanged through the permeable tube wall to the outside of the membrane outer tube 3, thereby reducing the possibility of condensation inside the membrane outer tube 3. This ensures the humidification of the gas inside breathing tubing 2 while preventing the patient from choking on condensed water during use, greatly improving the safety performance of breathing tubing 2.

[0041] When the above-mentioned breathing tubing 2 is used as the gas transmission tubing of a portable waterless humidifier, under the influence of factors such as the concentration difference, pressure difference, and temperature difference between the inside and outside of the membrane outer tube 3, some water vapor enters the membrane outer tube 3 from the outside through the water-permeable tube wall, thereby humidifying the gas in the membrane outer tube 3.

[0042] The metal support rib 4 has a spiral filament structure, meaning it is formed by spirally winding metal wire. In terms of shape, the specific shape of the metal support rib 4 can be referenced to a common cylindrical spring. The metal wire constituting the metal support rib 4 is preferably made of medical-grade stainless steel, or it can also be made of alloy materials such as iron-chromium-aluminum alloy or nickel-chromium alloy, so that the metal wire can also be used as a heating wire. The spiral filament structure of the metal support rib 4 has a certain degree of flexibility, making it difficult to be flattened or bent, thus providing good support for the membrane outer tube 3 and ensuring that the air passage in the membrane outer tube 3 remains unobstructed. In addition, the spiral filament structure of the metal support rib 4 has good flexibility, ensuring that the breathing tubing 2 has sufficient softness and conformability. The cross-sectional shape of the metal wire constituting the metal support rib 4 can be circular or... Figure 5 The semicircles shown, and even rectangles, pentagons, octagons, etc., will not be listed in detail here. It should be emphasized that, in this embodiment, the metal support rib 4 can be formed by spirally winding a single metal wire, or by spirally winding two, three, or even more metal wires. When formed by spirally winding two or more metal wires, the spiral direction of each metal wire is preferably consistent, and the spacing between adjacent turns is also preferably consistent.

[0043] Metal support ribs 4 are fixed to the inner surface of the outer membrane tube 3 to provide flexible support to the outer membrane tube 3, giving the breathing tubing 2 a certain structural strength. Figure 3-9 As can be seen, the inner surface is the surface of the outer membrane tube facing the lumen of the outer membrane tube. In this embodiment, the interior of the outer membrane tube 3 is the lumen of the outer membrane tube 3. That is, during use, the breathing tubing 2 is not easily flattened or bent, ensuring that the airway within the breathing tubing 2 remains unobstructed. Simultaneously, since the outer membrane tube 3 serves as the contact surface between the breathing tubing 2 and the external environment, the metal support rib 4 will not directly contact the external environment. This avoids direct contact between the metal support rib 4 and the patient's skin, preventing discomfort, and also prevents the metal support rib 4 from snagging on other external structures, thus affecting the use of the breathing tubing 2.

[0044] With the support of the metal rib 4, the above structure not only resists external radial pressure and prevents the breathing tube 2 from being flattened, but also has good axial tensile and compressibility. When the breathing tube 2 is pulled or squeezed and undergoes axial deformation, the metal rib 4 can provide sufficient elastic force to allow the breathing tube 2 to self-recover and maintain the normal length of the breathing tube 2.

[0045] In this embodiment, the outer membrane tube 3 is an integrally extruded structure, meaning it is manufactured through an extrusion process. The material for forming the outer membrane tube 3 is melted in a melting device and then directly extruded into a hollow tube using an extruder. This simplifies the process and reduces the molding cost of the outer membrane tube 3.

[0046] For reference Figure 4 , Figure 5 As shown, based on the aforementioned structure, the permeable tube wall can be attached to at least a portion of the outer peripheral surface of each turn of the metal support rib 4, forming a spirally raised joint 24 on the surface of the breathing tubing 2. Specifically, the joint 24 is the raised portion of the surface of the breathing tubing 2 compared to other parts, and is specifically composed of the metal support rib 4 and a portion of the thin film outer tube 3 attached to the metal support rib 4. This ensures sufficient contact area between the permeable tube wall and each turn of the metal support rib 4, thereby guaranteeing the connection strength between the thin film outer tube 3 and the metal support rib 4. Simultaneously, when the breathing tubing 2 is subjected to external force, the force will preferentially act on the spirally raised joint 24 on the surface of the breathing tubing 2. At this time, the thin film outer tube 3 on the joint 24 is less prone to damage due to the support of the metal support rib 4. The thin film outer tube 3 located between adjacent turns of the metal support rib 4 is less likely to be directly subjected to force, thus the probability of damage is relatively lower. Therefore, this design can guarantee the service life of the thin film outer tube 3 and reduce the risk of the breathing tubing 2 being scrapped due to damage to the thin film outer tube 3. In this embodiment, the permeable pipe wall is specifically attached to half of the radially outward outer circumferential surface of each turn of the metal support rib 4, or it can be specifically attached to one-third of the radially outward outer circumferential surface of each turn of the metal support rib 4. The specific area of ​​the permeable pipe wall attached to each turn of the metal support rib 4 depends on the actual needs and processing requirements, and will not be listed in detail here.

[0047] Embodiment 2 of this utility model:

[0048] This utility model provides a breathing tube 2 in embodiment 2. The application scenarios of this breathing tube 2 are the same as those of other embodiments of this utility model, and will not be described again here.

[0049] The breathing tubing 2 described in Embodiment 2 of this utility model specifically includes a membrane outer tube 3 and a metal support rib 4. The membrane outer tube 3 includes a water-permeable wall made of a microporous membrane material capable of permeating water vapor, such as thermoplastic polyurethane rubber, thermoplastic elastomer, or ethylene-vinyl acetate copolymer. When excessively humidified gas passes through the breathing tubing 2, under the influence of concentration, pressure, and temperature differences between the inside and outside of the membrane outer tube 3, some excess water vapor can be exchanged through the water-permeable wall to the outside of the membrane outer tube 3, thereby reducing the possibility of condensation inside the membrane outer tube 3. When the above-mentioned breathing tubing 2 is used as a gas transmission line for a portable waterless humidification device, under the influence of concentration, pressure, and temperature differences between the inside and outside of the membrane outer tube 3, some water vapor enters the membrane outer tube 3 from the outside through the water-permeable wall, thereby humidifying the gas in the membrane outer tube 3.

[0050] The metal support rib 4 has a spiral filament structure, meaning it is formed by spirally winding metal wire. The metal wire constituting the metal support rib 4 is preferably made of medical-grade stainless steel, or it can also be made of alloy materials such as iron-chromium-aluminum alloy or nickel-chromium alloy, so that the metal wire can also be used as a heating wire. The metal support rib 4 is fixed to the inner side of the membrane outer tube 3 to provide flexible support to the membrane outer tube 3, giving the breathing tubing 2 a certain structural strength. In this embodiment, the interior of the membrane outer tube 3 is the lumen of the membrane outer tube 3.

[0051] In this embodiment, the outer film tube 3 is a spirally wound structure. During preparation, the material for the outer film tube 3 is first melted in a melting device, then extruded into a strip of a certain width by an extruder, and finally wound into the outer film tube 3 in a spiral shape. The outer film tube 3 formed in this way can be formed by spirally winding a single strip, or by spirally winding two, three, or even more strips. Regardless of how many strips are used to form the outer film tube 3, there must be an overlapping area between adjacent turns to prevent gaps at the junctions of the turns. Due to the limited space in the extruder, the length of the outer film tube 3 that can be produced by integrally forming the outer film tube 3 through extrusion is limited. However, the strip can be coiled and folded, so the extruder is less constrained by space when processing the strip. When forming the outer film tube 3 by spiral winding the strip, as long as the strip length is sufficient, the length of the formed outer film tube 3 can be as long as possible. In other words, the outer membrane tube 3 is a spiral wound structure, which can free the length of the outer membrane tube 3 from the constraints of processing equipment, thereby enabling the outer membrane tube 3 to meet the application scenarios with greater length requirements.

[0052] For reference Figure 6 , Figure 7As shown, based on the aforementioned structure, the overlapping area of ​​two adjacent turns of the membrane outer tube 3 can be attached to the outer circumferential surface of the corresponding turn of the metal support rib 4, so that a spiral protrusion joint 24 is formed on the surface of the breathing tubing 2. Specifically, the joint 24 is the part of the breathing tubing 2 that protrudes compared to other parts, and is specifically composed of the metal support rib 4 and a portion of the membrane outer tube 3 attached to the metal support rib 4. This ensures sufficient contact area between the permeable tube wall and each turn of the metal support rib 4, thereby ensuring the connection strength between the membrane outer tube 3 and the metal support rib 4. Simultaneously, when the breathing tubing 2 is subjected to external force, the force will preferentially act on the spiral protrusion joint 24 on the surface of the breathing tubing 2. At this time, the membrane outer tube 3 on the joint 24 is less prone to damage due to the support of the metal support rib 4. The membrane outer tube 3 located between two adjacent turns of the metal support rib 4 is less likely to be directly subjected to force, thus the probability of damage is relatively lower. Based on this design concept, the membrane outer tube 3 and the metal support rib 4 can have the following specific structure:

[0053] Specifically, the overlapping areas of two adjacent turns of the membrane outer tube 3 are all attached to the radially outward side of the corresponding turn of the metal support rib 4. That is, during processing, the metal support rib 4 can be spirally wound first, and then the extruded strip is continuously wound around the outside of the metal support rib 4. The overlapping areas of two adjacent turns of the membrane outer tube 3 are precisely pressed onto the corresponding turn of the metal support rib 4. This ensures that each joint 24 has two layers of strip material disposed on the outward side of the metal support rib 4, making the membrane outer tube 3 on each joint 24 thicker than other parts. This makes the membrane outer tube 3 less prone to breakage at the joint 24, thereby effectively improving the service life of the breathing tubing 2.

[0054] Embodiment 3 of this utility model:

[0055] This utility model provides a breathing tubing 2 in embodiment 3. The application scenarios of this breathing tubing 2 are the same as those of other embodiments of this utility model, and will not be described again here.

[0056] The breathing tubing 2 described in Embodiment 3 of this utility model specifically includes a membrane outer tube 3 and a metal support rib 4. The membrane outer tube 3 includes a water-permeable wall made of a microporous membrane material capable of permeating water vapor, such as thermoplastic polyurethane rubber, thermoplastic elastomer, or ethylene-vinyl acetate copolymer. When excessively humidified gas passes through the breathing tubing 2, under the influence of concentration, pressure, and temperature differences between the inside and outside of the membrane outer tube 3, some excess water vapor can be exchanged through the water-permeable wall to the outside of the membrane outer tube 3, thereby reducing the possibility of condensation inside the membrane outer tube 3. When the above-mentioned breathing tubing 2 is used as a gas transmission line for a portable waterless humidification device, under the influence of concentration, pressure, and temperature differences between the inside and outside of the membrane outer tube 3, some water vapor enters the membrane outer tube 3 from the outside through the water-permeable wall, thereby humidifying the gas in the membrane outer tube 3.

[0057] The metal support rib 4 has a spiral filament structure, meaning it is formed by spirally winding metal wire. The metal wire constituting the metal support rib 4 is preferably made of medical-grade stainless steel, or it can also be made of alloy materials such as iron-chromium-aluminum alloy or nickel-chromium alloy, so that the metal wire can also be used as a heating wire. The metal support rib 4 is fixed to the inner side of the membrane outer tube 3 to provide flexible support to the membrane outer tube 3, giving the breathing tubing 2 a certain structural strength. In this embodiment, the interior of the membrane outer tube 3 can be the lumen of the membrane outer tube 3 or the water-permeable wall of the membrane outer tube 3.

[0058] In this embodiment, the outer film tube 3 is a spirally wound structure. During preparation, the material for the outer film tube 3 is first melted in a melting device, then extruded into a strip of a certain width by an extruder, and finally wound into the outer film tube 3 in a spiral shape. The outer film tube 3 formed in this way can be formed by spirally winding a single strip, or by spirally winding two, three, or even more strips. Regardless of how many strips are used to form the outer film tube 3, there must be an overlapping area between adjacent turns to prevent gaps at the junctions of the turns. Due to the limited space in the extruder, the length of the outer film tube 3 that can be produced by integrally forming the outer film tube 3 through extrusion is limited. However, the strip can be coiled and folded, so the extruder is less constrained by space when processing the strip. When forming the outer film tube 3 by spiral winding the strip, as long as the strip length is sufficient, the length of the formed outer film tube 3 can be as long as possible. In other words, the outer membrane tube 3 is a spiral wound structure, which can free the length of the outer membrane tube 3 from the constraints of processing equipment, thereby enabling the outer membrane tube 3 to meet the application scenarios with greater length requirements.

[0059] For reference Figure 8 , Figure 9As shown, based on the aforementioned structure, the overlapping area of ​​two adjacent turns of the membrane outer tube 3 can be attached to the outer circumferential surface of the corresponding turn of the metal support rib 4, so that a spiral protrusion joint 24 is formed on the surface of the breathing tubing 2. Specifically, the joint 24 is the part of the breathing tubing 2 that protrudes compared to other parts, and is specifically composed of the metal support rib 4 and a portion of the membrane outer tube 3 attached to the metal support rib 4. This ensures sufficient contact area between the permeable tube wall and each turn of the metal support rib 4, thereby ensuring the connection strength between the membrane outer tube 3 and the metal support rib 4. Simultaneously, when the breathing tubing 2 is subjected to external force, the force will preferentially act on the spiral protrusion joint 24 on the surface of the breathing tubing 2. At this time, the membrane outer tube 3 on the joint 24 is less prone to damage due to the support of the metal support rib 4. The membrane outer tube 3 located between two adjacent turns of the metal support rib 4 is less likely to be directly subjected to force, thus the probability of damage is relatively lower. Based on this design concept, the membrane outer tube 3 and the metal support rib 4 can have the following specific structure:

[0060] The overlapping areas of two adjacent turns of the outer membrane tube 3 are respectively attached to the metal support rib 4 from both the inner and outer sides, so that the corresponding turns of the metal support rib 4 are completely wrapped between the overlapping areas of two adjacent turns of the outer membrane tube 3. That is, during processing, the metal support rib 4 is wound synchronously with the extruded strip. During winding, the metal wire presses on the turns of the outer membrane tube 3 that are wound first, and then the turns of the outer membrane tube 3 that are wound later and adjacent to it are wound around the outside of the metal wire, so that the overlapping areas of two adjacent turns of the outer membrane tube 3 can completely wrap the corresponding turns of the metal support rib 4. The strip and the metal wire continue to be wound in this way until the outer membrane tube 3 is completely formed. This increases the contact area between the outer membrane tube 3 and the metal support rib 4, thereby ensuring the connection strength between the outer membrane tube 3 and the metal support rib 4. The breathing tube 2 processed in this way is equivalent to the metal support rib 4 supporting and embedding into the outer membrane tube 3 from the inside, so the connection between the metal support rib 4 and the outer membrane tube 3 is more complete and stable.

[0061] Embodiment 4 of this utility model:

[0062] Based on Embodiments 1 and 2 of this utility model, Embodiment 4 of this utility model proposes a breathing tube 2 with a heat preservation function. The breathing tube 2 described in Embodiment 4 of this utility model is based on Embodiments 1 and 2, with a thin-film inner tube 22 provided inside the metal support rib 4. (See reference...) Figure 10As shown, the inner membrane tube 22 is fixedly connected to the metal support rib 4, and a gap layer 23 is left between the inner membrane tube 22 and the outer membrane tube 3 to achieve a heat preservation effect. The gas in the gap layer 23 has a certain heat preservation effect on the interior of the inner membrane tube 22, thus reducing the possibility of condensation in the inner membrane tube 22 without adding a heating wire, and further preventing the condensation from affecting the patient.

[0063] In this embodiment, the inner membrane tube 22 is basically the same as the outer membrane tube 3 described in Embodiments 1 and 2, with differences only in the outer and inner diameters of the tube. Specific dimensions can be set according to actual needs, and will not be elaborated here.

[0064] The breathing tubing 2 designed according to Embodiments 1 to 4 of this utility model has an outer diameter maintained between 2 mm and 25 mm, and an inner diameter maintained between 1 mm and 19 mm. The thickness of the permeable pipe wall is preferably controlled between 0.05 mm and 0.15 mm, and the water vapor permeability of the permeable pipe wall is not less than 500 g / m² / 24h. The wire diameter is preferably controlled between 0.1 mm and 0.3 mm, so that the breathing tubing 2 can withstand an axial tensile force of 5 N to 45 N without plastic deformation, and an axial tensile force of 8 N to 60 N without breakage.

[0065] In addition, in at least one embodiment, a heating wire may be provided in the breathing tubing 2. The heating wire may be wound inside or outside the outer membrane tube 3, or inside or outside the inner membrane tube 22. By energizing the heating wire, the gas in the breathing tubing 2 can be heated to further reduce the possibility of condensation in the breathing tubing 2.

[0066] Embodiment 5 of this utility model:

[0067] This utility model provides a breathing device in embodiment five, which includes a breathing tubing 2 as described in any one of embodiments one to four of this utility model.

[0068] The following specific examples further illustrate the respiratory device described in this embodiment:

[0069] like Figure 11 The breathing device shown comprises several main parts, including a nasal cannula 1, an air delivery line 8, and an air supply device 9. The air supply device 9 consists of an air source 16 and a humidification device 10.

[0070] The air source 16 specifically consists of a first air inlet 17, a first air outlet 18, a fan 19, a flow meter 20, and a hygrometer 21. External air enters the air source 16 through the air inlet 17, and after being adjusted by the fan 19, flows out through the air outlet 18. The flow meter 20 and the hygrometer 21 are positioned along the gas flow path to monitor the flow rate and humidity of the gas exiting the air outlet.

[0071] The humidifier 10 consists of a second air inlet 11, a water inlet 12, a second air outlet 13, a water storage tank 14, and a heating base plate 15. Water is injected into the water storage tank 14 through the water inlet 12. When gas flows out from the first air outlet 18 of the gas source 16 and enters the humidifier 10 through the second air inlet 11, the heating base plate 15 heats the water storage tank 16, causing the liquid water in the water storage tank 16 to turn into gaseous water vapor. The gas flowing into the humidifier 10 mixes with the water vapor in the water storage tank 14 and then flows out of the humidifier 10 through the air outlet 13 and enters the gas supply pipeline 8. The gas supply pipeline 8 can be a regular pipeline or a heating pipeline with a heating wire.

[0072] For reference Figure 12 , Figure 13 As shown, the nasal oxygen cannula 1 consists of a nasal plug 5, a breathing tube 2, a slider 7, and an interface 6. The interface 6 connects to the gas delivery tube 8, and the gas output from the gas delivery tube 8 flows into the breathing tube 2 through the interface 6. Specifically, the breathing tube 2 is any of the breathing tubes 2 described in Embodiments 1 to 4 of this utility model. The breathing tube 2 passes through the slider 7, and the patient can adjust the slider 7 as needed to tighten or loosen the breathing tube 2. The nasal oxygen cannula 1 is attached to the user's face by a sticker on the nasal plug 5, and the gas flows through the breathing tube 2 to the nasal plug 5 and is inhaled by the user.

[0073] It should be emphasized that, in addition to the nasal oxygen cannula, the breathing tubing 2 can also be used on face mask products, and even as a supply tubing for connecting face mask products to breathing equipment. The breathing tubing can also be used as a gas transmission tubing for portable waterless humidifiers. The specific principle can be found in Embodiments 1 to 4 of this utility model, and will not be repeated here.

[0074] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

[0075] It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles described in this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0076] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0077] The above provides a detailed description of the breathing tubing and breathing device provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the structure and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A breathing circuit, characterized by, Includes a membrane outer tube and metal support ribs; The outer membrane tube includes a water-permeable wall, which is used to facilitate the exchange of water vapor between the inner and outer sides of the outer membrane tube. The metal support rib is a spiral filament structure, and the metal support rib is fixed to the inner surface of the outer tube of the membrane to provide flexible support, wherein the inner surface is the surface of the outer tube of the membrane facing the cavity of the outer tube of the membrane.

2. Breathing tube according to claim 1, characterized in that The permeable pipe wall is attached to at least a portion of the outer peripheral surface of each turn of the metal support rib, so that the surface of the breathing tube forms spiral protrusions.

3. Breathing tube according to claim 1 or 2, characterized in that The outer tube of the film is an integrally extruded structure.

4. Breathing tube according to claim 2, characterized in that The outer tube of the thin film is a spiral wound structure.

5. Breathing tube according to claim 4, characterized in that The overlapping areas of two adjacent turns of the outer membrane tube are both attached to the radially outward side of the corresponding turn of the metal support rib.

6. Breathing tube according to claim 4, characterized in that The overlapping areas of two adjacent turns of the outer membrane tube respectively wrap around the inner and outer sides of the metal support rib, so as to clamp the corresponding turns of the metal support rib inside the outer membrane tube.

7. Breathing tube according to claim 1 or 2, characterized in that The breathing circuit also includes a membrane inner tube; The inner membrane tube is disposed inside the metal support rib and is fixedly connected to the metal support rib, and a gap layer is left between the inner membrane tube and the outer membrane tube.

8. Breathing tube according to claim 1 or 2, characterized in that The breathing tubing also includes a heating wire for heating the breathing tubing.

9. A breathing apparatus characterized by Includes the breathing tubing as described in any one of claims 1-8.

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