Breathing tube and medical equipment

Abstract

The utility model provides a breathing tube and medical equipment. The breathing tube comprises an air guide tube, a first supporting rib, a second supporting rib and a heating wire. The gas-guide tube is used for conducting gas; the first supporting rib is connected to the peripheral wall surface of the gas-guide tube and spirally surrounds the gas-guide tube by taking the axis of the gas-guide tube as a central axis; the second supporting rib is connected to the peripheral wall surface of the gas-guide tube and spirally surrounds the gas-guide tube by taking the axis of the gas-guide tube as a central axis; the heating wire is spirally wound by taking the axis of the gas guide tube as a central axis; wherein the first supporting rib is arranged in a hollow mode, the first supporting rib and the second supporting rib form a double-helix structure, and the heating wire is located between an inner cavity of the air guide pipe and an inner cavity of the first supporting rib. On the premise that the same strength is guaranteed, the breathing tube is small in weight, the machining efficiency can be improved, the heat preservation and heat insulation performance around the heating wire can be improved, and the heating effect of the heating wire is better.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a breathing tube and medical equipment. Background Art

[0002] A ventilator is a medical device used to assist a patient's breathing. Its working principle is to deliver compressed air or oxygen to the patient's respiratory system through a series of pipes and valves to increase oxygen supply or improve ventilation. The breathing tube is a pipe system connecting the ventilator and the patient. It includes an inlet pipe and an outlet pipe. The ventilator usually delivers gas to the patient's respiratory system through these pipes, and then sends the exhausted gas back to the ventilator.

[0003] In the related art, the breathing tube is mainly composed of a film, and in order to avoid the bending of the breathing tube and the poor flow of gas in the tube, a plurality of solid reinforcing ribs are arranged around the outer wall of the breathing tube, thereby providing effective support for the breathing tube. In order to strengthen the rigidity of the breathing tube, the ribs need to be arranged around the outer wall of the breathing tube, and a single rib needs to ensure a certain winding pitch, so that the rib winding molding speed is slow. At the same time, the medium in the breathing tube is easy to exchange heat with the external environment through the outer wall of the breathing tube and the solid reinforcing ribs. Therefore, the thermal insulation performance of the breathing tube is poor, which will affect the quality of gas supply to the patient. In particular, in order to make the gas transported in the breathing tube suitable for the user, the breathing tube will also be provided with a heating wire for heating and heat preservation of the gas transported in the breathing tube. The heat exchange effect of the solid reinforcing ribs provided in the related art will also reduce the heating efficiency of the heating wire and the thermal insulation performance of the breathing tube as a whole. Utility Model Content

[0004] The main purpose of the utility model is to provide a breathing tube and medical equipment, aiming to solve the technical problems that the rib structure makes the breathing tube too heavy, the thermal insulation performance is poor, and the processing efficiency is low.

[0005] To achieve the above objectives, the first embodiment of the present invention provides a breathing tube, comprising:

[0006] Airway tube, used to conduct gas;

[0007] A first support rib is connected to the outer peripheral wall of the airway tube, and the first support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis;

[0008] A second support rib connected to the outer peripheral wall of the airway tube, the second support rib spirally surrounds the outside of the airway tube with the axis of the airway tube as the central axis; and

[0009] The heating wire is spirally arranged around the axis of the air guide tube as the central axis;

[0010] The first support rib is hollow, and the first support rib and the second support rib form a double helix structure, and the heating wire is located between the inner cavity of the airway tube and the inner cavity of the first support rib.

[0011] In some embodiments, along the radial direction of the air duct, the height dimension of the second support rib is smaller than the height dimension of the first support rib; and / or, along the axial direction of the air duct, the width dimension of the second support rib is smaller than the width dimension of the first support rib.

[0012] In some embodiments, the heating wire is connected to the air guide tube and / or the first support rib.

[0013] In some embodiments, the heating wire is located in the air duct; or, the heating wire is located between the air duct and the first support rib; or, the heating wire is located in the first support rib.

[0014] In some embodiments, the first support rib includes a first side wall connected to the air duct and a second side wall facing away from the air duct, the first side wall and the second side wall together define an inner cavity of the first support rib, and the heating wire is located in the first side wall.

[0015] In some embodiments, the airway tube is configured to be formed by spirally winding a strip;

[0016] The strip belt comprises a belt body, one side of the belt body along its width direction is an inner overlapped portion, and the other side is an outer overlapped portion, the outer overlapped portion and the inner overlapped portion of the spiral belt body are stacked, and the outer overlapped portion is located on the side of the inner overlapped portion away from the inner cavity of the airway tube;

[0017] Along the radial direction of the air guide tube, the heating wire is located between the inner overlapped portion and the outer overlapped portion.

[0018] In some embodiments, the first support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis;

[0019] A limiting protrusion is provided on the outer peripheral wall surface of the air guide tube, and the limiting protrusion abuts against the spiral side edge of the first supporting rib along the axial direction of the air guide tube.

[0020] In some embodiments, two limiting protrusions are provided on the outer peripheral wall of the air guide tube, and the two limiting protrusions are respectively abutted against two opposite spiral side edges of the first supporting rib along the axial direction of the air guide tube;

[0021] Along the axial direction of the air guide tube, the heating wire is located between the two limiting protrusions.

[0022] In some embodiments, the first support rib is integrally provided with the airway tube, and the airway tube is configured to be formed by spirally winding a strip belt, the strip belt includes a belt body and a support bar, the support bar is connected to one side of the belt body and defines an inner cavity extending along the length direction of the strip belt together with the belt body, and the support bar is spirally wound to form the first support rib;

[0023] and / or,

[0024] The second support rib is integrally arranged with the air guide tube, and the air guide tube is configured to be formed by spirally winding a strip belt, the strip belt includes a belt body and a support strip, the support strip is connected to one side of the belt body and together with the belt body defines an inner cavity extending along the length direction of the strip belt, and the support strip is spirally arranged to form a second support rib.

[0025] In some embodiments, the breathing tube satisfies at least one of the following conditions a)-k):

[0026] a) The wall thickness d1 of the airway tube satisfies: 0.13mm≤d1≤0.23mm;

[0027] b) The wall thickness d2 of the first supporting rib satisfies: 0.1mm≤d2≤0.5mm;

[0028] c) The inner diameter D1 of the airway tube satisfies: 8mm≤D1≤28mm;

[0029] d) Along the radial direction of the air guide tube, the height dimension L1 of the first support rib satisfies: 2.2mm≤L1≤2.8mm;

[0030] e) Along the axial direction of the air guide tube, the width dimension L2 of the first support rib satisfies: 2mm≤L2≤6mm;

[0031] f) The first support rib is arranged in a spiral shape with the axis of the air guide tube as the central axis, and the lead S of the first support rib satisfies: 2mm≤S≤8mm;

[0032] g) The first support rib is spirally wrapped around the outside of the air guide tube with the axis of the air guide tube as the central axis; a limiting protrusion is provided on the outer peripheral wall of the air guide tube, and the limiting protrusion abuts against the spiral side of the first support rib along the axis direction of the air guide tube, and along the radial direction of the air guide tube, the height dimension L3 of the limiting protrusion satisfies: 0.3mm≤L3≤1.3mm;

[0033] h) The first support rib is spirally wrapped around the outside of the air guide tube with the axis of the air guide tube as the central axis; a limiting protrusion is provided on the outer peripheral wall of the air guide tube, and the limiting protrusion abuts against the spiral side of the first support rib along the axis direction of the air guide tube, and along the axial direction of the air guide tube, the width dimension L4 of the limiting protrusion satisfies: 0.5mm≤L4≤1.5mm;

[0034] i) The first support ribs are arranged in a spiral shape with the axis of the air guide tube as the central axis, and the lead of the first support ribs is greater than the width of the first support ribs along the axial direction of the air guide tube;

[0035] j) A second supporting rib is also arranged around the outer periphery of the air guide tube, and along the radial direction of the air guide tube, the height dimension L5 of the second supporting rib satisfies: 1.3mm≤L5≤2.3mm;

[0036] k) A second supporting rib is also arranged around the outer periphery of the air guide tube, and along the axial direction of the air guide tube, the width dimension L6 of the second supporting rib satisfies: 1.5mm≤L6≤2.5mm.

[0037] The embodiment of the second aspect of the utility model further provides a medical device, comprising a breathing tube according to any one of the above embodiments.

[0038] Compared with the prior art, the beneficial effects of the utility model are:

[0039] In the technical solution of the utility model, the breathing tube includes an airway tube, a first support rib, a second support rib and a heating wire. The first support rib is connected to the outer peripheral wall of the airway tube. The first support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis. The second support rib is connected to the outer peripheral wall of the airway tube. The second support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis. The heating wire is spirally wrapped around the axis of the airway tube as the central axis. Among them, the first support rib is hollow, and the first support rib and the second support rib form a double helix structure, and the heating wire is located between the inner cavity of the airway tube and the inner cavity of the first support rib. Compared with the ribs wound in a single helix, the first support rib and the second support rib wound in a double helix in this solution can be wound around both at the same time while ensuring that the two adjacent spirals have the same pitch, which is beneficial to improving the processing efficiency of the breathing tube. Compared with the solid ribs, the first support rib arranged in the hollow of the present invention has a lower thermal conductivity. Under the joint action of the first support rib arranged in the hollow and the heating wire between the inner cavity of the air guide tube and the inner cavity of the first support rib, the inner cavity of the first support rib can have a strong thermal insulation property, which can reduce the heat exchange between the flowing medium in the tube and the external environment, and can also reduce the condensation water on the tube wall caused by the external environment. Therefore, the breathing tube of the utility model has a smaller weight under the premise of ensuring the same strength through the first support rib and the second support rib wound in a double helix, and the setting position of the heating wire relative to the two support ribs, which is conducive to improving processing efficiency, and is conducive to improving the thermal insulation performance around the heating wire, so that the heating effect of the heating wire is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0041] Figure 1This is a cross-sectional schematic diagram of a breathing tube in an embodiment of the utility model; wherein the heating wire is removed, and a portion of the supporting rib is hollow and another portion is solid;

[0042] Figure 2 This is a cross-sectional schematic diagram of a breathing tube in an embodiment of the utility model in which all the first supporting ribs are hollow, wherein the heating wire and the second supporting rib are removed;

[0043] Figure 3 It is a partial cross-sectional schematic diagram of a breathing tube in an embodiment of the utility model; wherein, there is a limiting protrusion on each side of the first supporting rib; wherein, the heating wire and the second supporting rib are removed;

[0044] Figure 4 for Figure 3 A partial enlarged cross-sectional view of the area around the first supporting rib at A in the middle;

[0045] Figure 5 It is a partial enlarged cross-sectional view of the first supporting rib and its surroundings in one embodiment of the utility model, wherein the heating wire and the second supporting rib are removed;

[0046] Figure 6 It is a partial cross-sectional schematic diagram of the strip belt and the first support rib of the breathing tube after winding in one embodiment of the utility model; wherein the strip belt is stacked and wound, and the heating wire and the second support rib are removed;

[0047] Figure 7 for Figure 6 A schematic cross-sectional view of a split independent winding unit of a middle strip and a first supporting rib, wherein the heating wire and the second supporting rib are removed;

[0048] Figure 8 It is a partial cross-sectional schematic diagram of a breathing tube in one embodiment of the utility model;

[0049] Fig. 9 for Figure 8 A partial enlarged cross-sectional view at B in the middle shows the relative arrangement of the first supporting rib and the heating wire;

[0050] Fig.10 The relative arrangement of the first supporting rib and the heating wire in one embodiment of the utility model;

[0051] Fig.11 The relative arrangement of the first supporting rib and the heating wire in one embodiment of the utility model;

[0052] Fig.12 This is a partial structural diagram of a breathing tube in an embodiment of the utility model, wherein the heating wire and the second supporting rib are removed;

[0053] Fig.13 for Fig.12A partial enlarged cross-sectional view of the middle C; wherein the heating wire is arranged between the inner overlapped portion and the outer overlapped portion;

[0054] Fig.14 for Fig.12 A schematic cross-sectional view of the inner overlapped portion and the outer overlapped portion of the adjacently stacked middle strips after being separated;

[0055] Fig.15 It is a partial cross-sectional schematic diagram of a breathing tube in one embodiment of the utility model;

[0056] Fig.16 for Fig.15 A partial enlarged cross-sectional view at D in the middle;

[0057] Fig.17 It is a cross-sectional schematic diagram of a first supporting rib, a second supporting rib and a protrusion of a breathing tube in an embodiment of the utility model being wound together on a strip belt; wherein the strip belt is formed by stacking and winding an inner overlapping portion and an outer overlapping portion;

[0058] Fig.18 It is a cross-sectional schematic diagram of the integrated arrangement of the first supporting rib, the second supporting rib, the protrusion and the strip belt of the breathing tube in one embodiment of the utility model;

[0059] Fig.19 It is a cross-sectional schematic diagram of the winding arrangement of the first supporting rib, the second supporting rib, the protrusion and the strip belt of the breathing tube in one embodiment of the utility model;

[0060] Fig. 20 It is a schematic diagram of a first extrusion unit, a second extrusion unit and a molding shaft in one embodiment of the utility model;

[0061] Fig.21 A flowchart of a processing method provided in one embodiment of the utility model;

[0062] Fig. 22 A first part flow chart of another processing method provided in one embodiment of the utility model;

[0063] Fig.23 This is a second part of a flow chart of another processing method provided in an embodiment of the utility model; wherein S205 is Fig. 22 The steps after S204 in the figure are adjacent to each other.

[0064] Breathing tube 10;

[0065] Air guide tube 100; peripheral wall surface 110; axis 120;

[0066] Strip 130; strip body 131; inner overlap portion 1311; outer overlap portion 1312; support strip 132; protrusion 133;

[0067] Support rib 200;

[0068] First supporting rib 200a; first side wall 210a; second side wall 220a; spiral side edge 230a; rib tube 240a; rib 250a;

[0069] Second supporting rib 200b;

[0070] Limiting protrusion 300;

[0071] Heating wire 400;

[0072] First extrusion unit 610; second extrusion unit 620; forming shaft 630;

[0073] Length direction X;

[0074] Width direction Y.

[0075] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0076] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0077] A ventilator is a medical device used to assist or replace a patient's breathing. Its working principle is to use compressed air or oxygen, regulated by a series of pipes and valves, to deliver gas into the patient's respiratory system to increase oxygen supply or improve ventilation. The breathing tube is a pipe system connecting the ventilator and the patient. It includes an inlet pipe and an outlet pipe. The ventilator usually delivers gas to the patient's respiratory system through these pipes, and then sends the exhausted gas back to the ventilator.

[0078] In the related art, the breathing tube is mainly composed of a film, and in order to avoid the bending of the breathing tube and the poor flow of gas in the tube, a plurality of solid reinforcing ribs are arranged around the outer wall of the breathing tube, thereby providing effective support for the breathing tube. In order to strengthen the rigidity of the breathing tube, the ribs need to be arranged around the outer wall of the breathing tube, and a single rib needs to ensure a certain winding pitch, so that the rib winding molding speed is slow. At the same time, the medium in the breathing tube is easy to exchange heat with the external environment through the outer wall of the breathing tube and the solid reinforcing ribs. Therefore, the thermal insulation performance of the breathing tube is poor, which will affect the quality of gas supply to the patient. In particular, in order to make the gas transported in the breathing tube suitable for the user, the breathing tube will also be provided with a heating wire for heating and heat preservation of the gas transported in the breathing tube. The heat exchange effect of the solid reinforcing ribs provided in the related art will also reduce the heating efficiency of the heating wire and the thermal insulation performance of the breathing tube as a whole.

[0079] In view of this, an embodiment of the present invention provides a breathing tube 10, which is conducive to improving the thermal insulation effect around the heating wire 400 to enhance the user experience. Figures 1 to 20 The breathing tube 10 of the embodiment of the utility model is described below. Specifically, the breathing tube 10 includes an air guide tube 100 , a first supporting rib 200 a , a second supporting rib 200 b and a heating wire 400 .

[0080] The airway 100 is used to conduct gas. The gas may include oxygen, so that the airway 100 can provide respiratory support for the patient. In some embodiments, the airway 100 can be an air inlet duct of the breathing tube 10, that is, the airway 100 can deliver oxygen or air to the patient's lungs. In other embodiments, the airway 100 can also be an air outlet duct of the breathing tube 10, that is, the airway 100 can discharge the patient's exhaled gas. The specific method can be determined according to the actual situation.

[0081] See also Figure 1-Figure 6, the first support rib 200a is connected to the outer peripheral wall surface 110 of the air duct 100, and the first support rib 200a is spirally wrapped around the outside of the air duct 100 with the axis 120 of the air duct as the central axis. Among them, the direction and pitch of the spiral wrapping of the first support rib 200a can be determined according to the actual situation, and in different embodiments, the value of each pitch formed by each circle of the first support rib 200a can be the same or different. It can be understood that the spiral line can be a left spiral line or a right spiral line. By arranging the support rib 200 spirally around the air duct 100, this solution can further improve the stability of the support rib 200 supporting the air duct 100, prevent the air duct 100 from being bent significantly, reduce the situation where foreign objects directly scratch the air duct 100, and ensure that the air duct 100 can continue to conduct the flowing medium normally. In addition, specifically, the pitch of the first support rib 200a is greater than the width of the two first support ribs 200a. Preferably, the pitch of the first support rib 200a is greater than the width of the three first support ribs 200a. It should be noted that the width of the first support rib 200a is explained as follows, see Figure 5-Figure 6 The breathing tube 10 is cut with the plane where the axis 120 of the airway tube 100 is located as the cutting plane, and the support ribs 200 and the peripheral wall of the airway tube 100 together form a plurality of closed figures, and the maximum width of the outermost line of a single closed figure along the axis 120 of the airway tube 100 is the width of the first support rib 200a. In addition, the definition of the width of the second support rib 200b is similar.

[0082] Similarly, see Fig.15 , the second support rib 200b is connected to the outer peripheral wall surface 110 of the airway 100, and the second support rib 200b is spirally wrapped around the outside of the airway 100 with the axis 120 of the airway as the central axis. It can be understood that the second support rib 200b and the first support rib 200a can be spirally wrapped around the outside of the airway 100 in the same or similar form. Therefore, the structure and wrapping form of the second support rib 200b can refer to the above-mentioned first support rib 200a, and in different embodiments, the structure or wrapping form of the second support rib 200b and the first support rib 200a can be the same or different. In different embodiments, the first support rib 200a or the second support rib 200b can partially spirally wrap around the axis 120 of the airway 100, or can completely spirally wrap around the axis 120 of the airway 100. Some embodiments of the utility model are described by taking the first support rib 200a and the second support rib 200b as examples in which both completely wrap around the axis 120 of the airway 100. Based on the definitions of the above embodiments, the first supporting rib 200 a and the second supporting rib 200 b may both be used to support the air duct 100 .

[0083] See also Figure 8, the heating wire 400 is spirally arranged around the axis 120 of the airway tube 100 as the central axis. It can be understood that the heating wire 400 can be used to heat the gas transported in the airway tube 100, and the heating wire 400 is arranged in a spiral manner so that the contact area between the heating wire 400 and the outer peripheral wall 110 of the airway tube 100 is larger, which is conducive to improving the heating efficiency. In order to facilitate the transmission of signals to the heating wire 400 to control the heating of the heating wire 400, in some embodiments, the breathing tube 10 may also include a wire, which can be electrically connected to the heating wire 400, and the wire can also be spirally arranged around the axis 120 of the airway tube 100 as the central axis, and the above-mentioned wire can be suitable for transmitting communication signals; in other embodiments, there can be multiple heating wires 400, and each heating wire 400 can be spirally arranged around the axis 120 of the airway tube 100 as the central axis, and at least one heating wire 400 can be suitable for transmitting communication signals. For the specific arrangement of the heating wire 400, please refer to the following.

[0084] The first support rib 200a is hollow, and the wall thickness of the first support rib 200a can be determined according to the actual situation. With reference to the actual application scenario of the breathing tube 10, it can be understood that, compared with the existing solid rib structure, the hollow setting of the first support rib 200a means that it can have a lighter weight while meeting the same strength index (it can also be understood that it can meet a higher strength index while having the same weight). The first support rib 200a and the second support rib 200b form a double helix structure. Corresponding to the setting of the heating wire 400, the heating wire 400 is located between the inner cavity of the airway 100 and the inner cavity of the first support rib 200a. It can be understood that the hollow setting of the first support rib 200a can also facilitate the arrangement of the heating wire 400. Compared with the existing solid rib structure, the inner cavity of the first support rib 200a has stronger thermal insulation properties, which can reduce the heat exchange between the flowing medium in the pipe and the external environment, and can also reduce the condensation water on the pipe wall caused by the external environment. Therefore, the inner cavity of the first support rib 200a can make the heating effect of the heating wire 400 better, which is beneficial to improve the thermal insulation performance around the heating wire 400.

[0085] It should be noted that, in different embodiments, the first support rib 200a can be all hollow or partially hollow. That is to say, to adapt to the strength and insulation requirements of the breathing tube 10, as well as the setting of the heating wire 400, in some embodiments, the first support rib 200a can be configured so that only part of the winding section is hollow, for example, a hollow first support rib 200a can be provided in the portion where the heating wire 400 is required. It can be understood that the above-mentioned partial hollow setting is conducive to reducing manufacturing costs, and the part of the first support rib 200a that is not hollow can be provided as a solid structure, which is conducive to further enhancing the support strength of the first support rib 200a. For ease of description, the following is an embodiment in which the first support rib 200a can be all hollow as an example, and different embodiments can be combined with each other between different technical solutions. In addition, in some embodiments, the second support rib 200b can be hollow as a whole; or, the second support rib 200b and the outer peripheral wall of the airway 100 jointly define a spiral cavity.

[0086] In the technical solution of the utility model, the breathing tube 10 includes an airway tube 100, a first support rib 200a, a second support rib 200b and a heating wire 400. The first support rib 200a is connected to the outer peripheral wall 110 of the airway tube 100. The first support rib 200a is spirally wrapped around the outside of the airway tube 100 with the axis 120 of the airway tube 100 as the central axis. The second support rib 200b is connected to the outer peripheral wall 110 of the airway tube 100. The second support rib 200b is spirally wrapped around the outside of the airway tube 100 with the axis 120 of the airway tube 100 as the central axis. The heating wire 400 is spirally wrapped around the axis 120 of the airway tube 100 as the central axis. Among them, the first support rib 200a is hollow, and the first support rib 200a and the second support rib 200b form a double helix structure, and the heating wire 400 is located between the inner cavity of the airway tube 100 and the inner cavity of the first support rib 200a. Compared with the ribs 250a wound in a single spiral, the first support rib 200a and the second support rib 200b wound in a double spiral in this embodiment can be wound at the same time under the premise of ensuring the same pitch of the two adjacent spirals, thereby facilitating the improvement of the processing efficiency of the breathing tube 10. Compared with the solid ribs 250a, the hollow support ribs 200 in this embodiment have a lower thermal conductivity. Under the joint action of the heating wire 400 between the inner cavity of the first support rib 200a arranged in the hollow and the inner cavity of the airway 100 and the inner cavity of the first support rib 200a, the inner cavity of the first support rib 200a can have a strong heat preservation property, which can reduce the heat exchange between the flowing medium in the tube and the external environment, and can also reduce the condensation water on the tube wall caused by the external environment. Therefore, the breathing tube 10 of the utility model has a smaller weight while ensuring the same strength through the first supporting rib 200a and the second supporting rib 200b wound in a double helix, and the setting position of the heating wire 400 relative to the two supporting ribs 200, which is beneficial to improving processing efficiency and improving the thermal insulation performance around the heating wire 400, so that the heating effect of the heating wire 400 is better.

[0087] The first supporting rib 200a and the second supporting rib 200b may have different structural forms. Figure 15-16, with respect to the height dimensions of the first support rib 200a and the second support rib 200b, in some embodiments, along the radial direction of the air duct 100, the height dimension of the second support rib 200b is smaller than the height dimension of the first support rib 200a. The height dimension of the first support rib 200a is defined as: the distance from one end of the first support rib 200a close to the axis 120 of the air duct 100 to one end of the first support rib 200a away from the axis 120 of the air duct 100 along the direction perpendicular to the axis 120 of the air duct 100. Similarly, the height dimension of the second support rib 200b is defined as: the distance from one end of the second support rib 200b close to the axis 120 of the air duct 100 to one end of the second support rib 200b away from the axis 120 of the air duct 100 along the direction perpendicular to the axis 120 of the air duct 100. It can be understood that the above-mentioned height limitation means that along the direction perpendicular to the axis 120 of the air guide tube 100, the height of the first support rib 200a is greater than the height of the second support rib 200b. This arrangement can reduce the manufacturing cost of the breathing tube 10 and reduce the weight of the breathing tube 10.

[0088] On the other hand, see Figure 15-16 , for the width dimensions of the first support rib 200a and the second support rib 200b, in some embodiments, along the axial direction of the air duct 100, the width dimension of the second support rib 200b is smaller than the width dimension of the first support rib 200a. The width dimension of the first support rib 200a is defined as: the distance from one end of the first support rib 200a along the axis 120 of the air duct 100 to the other opposite end. Similarly, the height dimension of the second support rib 200b is defined as: the distance from one end of the second support rib 200b along the axis 120 of the air duct 100 to the other opposite end. It can be understood that the above-mentioned width limitation means that along the axis 120 of the air duct 100, the width of the first support rib 200a is greater than the width of the second support rib 200b. This setting can reduce the manufacturing cost of the breathing tube 10 and reduce the weight of the breathing tube 10, and it can also facilitate the control and adjustment of the distance between the first support rib 200a and the second support rib 200b.

[0089] In different embodiments, the heating wire 400 can be arranged at different positions. In order to fix the heating wire 400 and make the heating wire 400 have a better heating effect, in some embodiments, the heating wire 400 can be connected to the air duct 100 and / or the first support rib 200a. For the specific positional relationship between the heating wire 400 and the air duct 100 and the first support rib 200a, see Fig.10In the embodiment of the first arrangement of the heating wire 400, the heating wire 400 may be located in the air duct 100. Specifically, in some embodiments, the heating wire 400 may be connected to the inner wall of the air duct 100. The heating wire 400 may be connected to the air duct 100 by bonding, clamping, etc. The above arrangement enables the heating wire 400 to be located closer to the gas flowing in the air duct 100, thereby facilitating the improvement of the heating efficiency of the heating wire 400 for the gas in the air duct 100. See Fig.11 In the embodiment of the second arrangement of the heating wire 400, the heating wire 400 can be located between the air duct 100 and the first support rib 200a. It can be understood that the heating wire 400 can be clamped between the air duct 100 and the first support rib 200a along the direction perpendicular to the axis 120 of the air duct 100, so that the air duct 100 and the first support rib 200a can clamp the heating wire 400 together, and make the heating wire 400 more efficient in heating the gas in the air duct 100, and the first support rib 200a has better thermal insulation effect. For the embodiment in which the first support rib 200a itself is stacked and surrounded, the heating wire 400 can also be simultaneously located between two adjacent circles of the first support rib 200a. Please refer to the following text for the specific form. See. Fig. 9 In the embodiment of the third arrangement of the heating wire 400, the heating wire 400 may be located inside the first support rib 200a. Specifically, in some embodiments, the first support rib 200a may include a first side wall 210a connected to the air duct 100 and a second side wall 220a away from the air duct 100. The first side wall 210a and the second side wall 220a together define an inner cavity of the first support rib 200a. It can be understood that the first side wall 210a and the second side wall 220a are arranged relative to each other in a direction perpendicular to the axis 120 of the air duct 100, and the first side wall 210a close to the axis 120 of the air duct 100 is connected to the air duct 100. Based on this, the heating wire 400 may be located inside the first side wall 210a. The above arrangement allows the heating wire 400 to pass through the thick portion of the first side wall 210a, so that the heating wire 400 can be spirally wound around the outside of the air duct 100 along with the first support rib 200a, which is beneficial to reducing manufacturing time and making the connection of the heating wire 400 tighter.

[0090] Regarding the connection relationship between the first support rib 200a and the second support rib 200b and the outer peripheral wall surface 110 of the air duct 100. In some embodiments, the first support rib 200a or the second support rib 200b can be an independently manufactured component, that is, the air duct 100 and the first support rib 200a or the second support rib 200b can be provided respectively, and then the air duct 100 and the first support rib 200a or the second support rib 200b are assembled and installed. Therefore, in this type of embodiment, the first support rib 200a or the second support rib 200b can be connected to the air duct 100 in a split manner (or detachably connected). Specifically, the first support rib 200a or the second support rib 200b can be connected to the outer peripheral wall surface 110 by winding force, or can be bonded to the outer peripheral wall surface 110. The above-mentioned setting is conducive to adjusting and replacing the first support rib 200a or the second support rib 200b. Correspondingly, in other embodiments, the first support rib 200a can be integrally provided with the airway tube 100; and / or, the second support rib 200b can be integrally provided with the airway tube 100. Therefore, in this type of embodiment, the first support rib 200a or the second support rib 200b can be integrally formed and manufactured with the airway tube 100. The above arrangement is conducive to saving the manufacturing time of the breathing tube 10, and the integral arrangement can make the support strength of the first support rib 200a or the second support rib 200b higher.

[0091] For the specific structure of the airway tube 100, see Fig.12 In some embodiments, the air duct 100 may be configured to be formed by spirally winding a strip 130. In different embodiments, the strip 130 may be one or more strips. The following is an example of forming the air duct 100 by winding only one strip 130. Specifically, the strip 130 may include a strip body 131 and a protrusion 133. One side of the strip body 131 along its own width direction Y is an inner overlap portion 1311, and the other side is an outer overlap portion 1312. The width direction Y of the strip body 131 itself is defined as: along a direction perpendicular to the winding direction of the strip body 131, the relative direction between the two sides of the outer peripheral wall 110 of the air duct 100 spirally wound by the strip body 131 is the width direction Y of the strip body 131 itself. Based on the above settings, see Figure 6 and 14 The outer overlapping portion 1312 and the inner overlapping portion 1311 of the spiral belt body 131 can be stacked, and the outer overlapping portion 1312 is located on the side of the inner overlapping portion 1311 away from the inner cavity of the airway tube 100. It can be understood that along the spiral winding direction of the belt body 131, the outer overlapping portion 1312 of each circle of the belt body 131 is stacked on the inner overlapping portion 1311 of the previous circle of the belt body 131, thereby forming a spiral belt body 131 structure with each circle stacked.

[0092] Based on the above-mentioned embodiments for the arrangement of the inner overlap portion 1311 and the outer overlap portion 1312, and combined with the arrangement of the heating wire 400, see Fig.14 In some embodiments, along the radial direction of the air duct 100, the heating wire 400 is located between the inner overlapped portion 1311 and the outer overlapped portion 1312. It can be understood that when the inner overlapped portion 1311 and the outer overlapped portion 1312 of the first support rib 200a form a self-stacked and surrounded structure, the heating wire 400 can be located between the inner overlapped portion 1311 and the outer overlapped portion 1312 of two adjacent windings. The above arrangement can make it possible to wind the heating wire 400 while winding the first support rib 200a, and fix the first support rib 200a and the heating wire 400 at the same time, so as to reduce the manufacturing time and make the connection of the heating wire 400 more compact.

[0093] In some embodiments, reference Figure 6 The support rib 200 is spirally wound around the air duct 100 with the axis 120 of the air duct 100 as the central axis. The helical angle and pitch of the support rib 200 can be determined according to actual conditions. It can be understood that the helix can be a left helix or a right helix.

[0094] Reference Figure 3 The outer peripheral wall surface 110 of the air guide tube 100 is provided with a limiting protrusion 300, and the limiting protrusion 300 abuts against the spiral side edge 230a of the support rib 200 along the axis 120 of the air guide tube 100. It should be noted that the spiral side edge 230a can be a spiral line of the outer periphery of the air guide tube 100 abutting against the spirally arranged support rib 200, that is, the first support rib 200a extends along the spiral winding direction, and is used to define the side edge of the inner cavity of the first support rib 200a. It can be understood that the limiting protrusion 300 can be set to be single or multiple. And to meet the requirements of the limiting function, in different embodiments, the limiting protrusions 300 can be extended or arranged in different forms, for example, the limiting protrusions 300 can be in a dot-shaped protrusion structure, and a plurality of dot-shaped limiting protrusions 300 can be distributed on the outer peripheral wall surface 110. The limiting protrusions 300 can also be in a strip shape, and the strip-shaped limiting protrusions 300 can be annularly surrounded by the outer peripheral wall surface 110 of the air duct 100, or can be spirally wound around the outer peripheral wall surface 110 of the air duct 100. Some embodiments of the utility model are described by taking the example of setting two limiting protrusions 300, both of which are spirally wound around the outer peripheral wall surface 110 of the air duct 100.

[0095] In some embodiments, the number of the protrusion 133 is one, so that the air duct 100 includes one limiting protrusion 300, that is, a single protrusion 133 is spirally wound to form a limiting protrusion 300. Along the axial direction of the air duct 100, one side of the limiting protrusion 300 abuts against the spiral side edge 230a on one side of the first support rib 200a, and the other side of the limiting protrusion 300 abuts against the spiral side edge 230a on the other side of the first support rib 200a. In this solution, the material composition of the protrusion 133 is less, which can save processing materials.

[0096] In other embodiments, the number of the protrusions 133 is two, so that the air duct 100 includes two limiting protrusions 300, that is, the two protrusions 133 are spirally wound to form two limiting protrusions 300. The first support rib 200a is located between the two limiting protrusions 300, that is, the two limiting protrusions 300 can clamp the first support rib 200a. The two limiting protrusions 300 provided in this solution can further improve the stability of the connection between the air duct 100 and the first support rib 200a.

[0097] In some embodiments, the two limiting protrusions 300 are spirally wound around the outer peripheral wall surface 110 of the airway tube 100 with the axis 120 of the airway tube 100 as the central axis. It can be understood that the two limiting protrusions 300 can be spirally wound from the head end of the airway tube 100 to the end of the airway tube 100, or can only spirally wound on the airway tube 100 for a partial distance in the direction from the head end to the end. Some embodiments of the present application are described by taking the example that the two limiting protrusions 300 are spirally wound from the head end of the airway tube 100 to the end of the airway tube 100.

[0098] The arrangement of the heating wire 400 may correspond to the arrangement of the limiting protrusion 300 (bump 133) in the above-mentioned embodiments. Specifically, corresponding to the arrangement of the first support rib 200a being located between the two limiting protrusions 300, in some embodiments, the outer peripheral wall surface 110 of the air duct 100 may be provided with two limiting protrusions 300, and the two limiting protrusions 300 may respectively abut against the two opposite spiral side edges 230a of the first support rib 200a along the axis 120 of the air duct 100. Based on the above arrangement, in some embodiments, along the axial direction of the air duct 100, the heating wire 400 may be located between the two limiting protrusions 300. It can be understood that the two limiting protrusions 300 are respectively in contact with the two sides of the first support rib 200a, which can limit and fix the first support rib 200a, and the heating wire 400 is arranged between the two limiting protrusions 300, which can make the first support rib 200a have a stronger connection / pressing effect on the heating wire 400, and make the first support rib 200a have a better thermal insulation effect. In addition, in some embodiments, the two limiting protrusions 300 can be spirally wrapped around the outside of the air duct 100 with the axis 120 of the air duct 100 as the central axis.

[0099] Regarding the winding form of the first support rib 200a or the second support rib 200b. In some embodiments, the first support rib 200a can be integrally provided with the airway 100, and the airway 100 can be configured to be formed by spirally winding the strip 130. The strip 130 includes a strip body 131 and a support bar 132. The support bar 132 is connected to one side of the strip body 131 and defines an inner cavity extending along the length direction X of the strip 130 together with the strip body 131. It can be understood that the support bar 132 can extend along the length direction X of the strip body 131, and the cross-section of the support bar 132 can be semicircular, arched, open rectangular, etc., so that the wall surface of the strip body 131 away from the inner cavity of the breathing tube 10 can define an inner cavity extending along the length direction X of the strip 130 together with the support bar 132. Similar to the principle of forming the limiting protrusion 300 in the above embodiment, the first support rib 200a can be formed after the support bar 132 is spirally arranged. That is, when the belt body 131 is spirally wound, the support strip 132 can conform to form a spiral shape to form the first support rib 200a.

[0100] Similarly, for the second support rib 200b, in some embodiments, the second support rib 200b can be integrally provided with the airway 100. The airway 100 can be configured to be formed by spirally winding a strip 130. The strip 130 includes a strip body 131 and a support bar 132. The support bar 132 can be connected to one side of the strip body 131 and together with the strip body 131 define an inner cavity extending along the length direction X of the strip 130. The support bar 132 can form the second support rib 200b after being spirally arranged. It can be understood that the way the second support rib 200b is wound in this embodiment is similar to the way the second support rib 200b is wound in the previous embodiment, so the definition of the second support rib 200b in this embodiment can refer to the first support rib 200a of the above embodiment, and the two types of embodiments can be implemented at the same time.

[0101] Based on the above embodiments, the first support rib 200a / the second support rib 200b is formed by the support strip 132 and defines an inner cavity together with the belt body 131. Further, the limiting protrusion 300 can have different positional relationships with the first support rib 200a / the second support rib 200b. Specifically, in a positional relationship embodiment, the first support rib 200a can be integrally arranged with the air duct 100. The air duct 100 can be configured to be formed by spirally winding the strip 130. The strip 130 may include a belt body 131, a support strip 132, and a protrusion 133. The support strip 132 is connected to one side of the belt body 131 and defines an inner cavity extending along the length direction X of the strip 130 together with the belt body 131. The support strip 132 is spirally arranged to form the first support rib 200a. The protrusion 133 can be connected to the belt body 131 and is located on the same side as the support strip 132. Based on the above arrangement, the protrusion 133 can extend along the length direction X of the belt body 131 and be spaced apart from the support strip 132 along the width direction Y of the belt body 131. The protrusion 133 is spirally arranged to form a limiting protrusion 300. It can be understood that this arrangement is to combine the arrangement of the protrusion 133 and the support strip 132 in the above embodiments. In particular, the first support rib 200a is located between the limiting protrusion 300 and the second support rib 200b. It can be understood that along the axial direction of the air guide tube 100, one side of the first support rib 200a faces the limiting protrusion 300, and the other side opposite to it faces the second support rib 200b, and both sides of the first support rib 200a can be abutted against or spaced apart from the limiting protrusion 300 or the second support rib 200b. The above-mentioned setting can make the limiting protrusion 300 and the second support rib 200b both play a limiting role for the first support rib 200a, and the limiting protrusion 300 is used to limit the pitch formed by the first support rib 200a and the second support rib 200b. The second support rib 200b can also play a role in improving the supporting strength and heat preservation. The use of the second support rib 200b as a limit on one side of the first support rib 200a can save materials and reduce manufacturing costs and weight.

[0102] See also Figure 15-16In another embodiment of the positional relationship, the strip 130 may further include two protrusions 133. The two protrusions 133 may be connected to the strip body 131. The two protrusions 133 extend along the length direction X of the strip body 131 and are arranged at intervals from each other along the width direction Y of the strip body 131. The two protrusions 133 are arranged in a spiral manner to form two limiting protrusions 300. In particular, the first support rib 200a is located between the two limiting protrusions 300. It can be understood that along the axial direction of the air guide tube 100, the opposite sides of the first support rib 200a face one limiting protrusion 300 respectively. Furthermore, in some embodiments, the strip band 130 may also include four protrusions 133, which are spirally arranged to form four limiting protrusions 300, wherein the first support rib 200a is located between two limiting protrusions 300, and the second support rib 200b is located between the other two limiting protrusions 300, that is, the first support rib 200a and the second support rib 200b can be located between the two limiting protrusions 300 respectively.

[0103] The belt body 131 and the protrusion 133 of this solution can be formed separately and then connected and wound, or they can be formed as one piece, which has high processing efficiency. Fig.18 or Fig.19 In some embodiments, the protrusion 133 may be connected to the outer overlap portion 1312. The above arrangement may prevent the protrusion 133 structure from being interfered with by the spirally wound belt body 131. In some embodiments, the protrusion 133 may extend along the length direction X of the belt body 131, and the spiral protrusion 133 is a limiting protrusion 300. It is understood that the extension of the length direction X of the belt body 131 corresponds to the direction in which the belt body 131 is spirally wound, that is, when the belt body 131 is spirally wound, the protrusion 133 extending along the length direction X of the belt body 131 may conform to form a spiral shape to form a limiting protrusion 300.

[0104] See also Figure 5In some embodiments, the first support rib 200a may include a rib tube 240a and a rib 250a, the rib tube 240a is connected to the outer peripheral wall surface 110 of the air duct 100, and the rib 250a is arranged in the rib tube 240a. Specifically, in some embodiments, the rib 250a may be arranged to extend along the axis 120 of the air duct 100. In other embodiments, the rib 250a may be arranged to extend in a direction perpendicular to the axis 120 of the air duct 100. Some embodiments of the utility model are described by taking the rib 250a extending along the axis 120 of the air duct 100 as an example. In some embodiments, the second support rib 200b may also include a rib tube 240a and a rib 250a, and have a similar arrangement to the first support rib 200a of the above embodiment. For ease of description, the following is an embodiment in which only the first support rib 200a includes the rib tube 240a and the rib 250a as an example, and different embodiments may be combined with different technical solutions.

[0105] The side of the rib 250a close to the air duct 100 is connected to the inner wall surface of the side of the rib tube 240a close to the air duct 100, and the side of the rib 250a away from the air duct 100 is connected to the inner wall surface of the side of the rib tube 240a away from the air duct 100. That is, the rib 250a divides the rib tube 240a into two independent spiral spaces. By arranging the rib 250a in the rib tube 240a, this solution can effectively improve the structural strength of the rib tube 240a, improve the stability of the rib tube 240a supporting the air duct 100, and avoid the collapse of the rib tube 240a.

[0106] The ribs 250a may have different extending directions, see Figure 5 In some embodiments, the ribs 250a may extend in a direction perpendicular to the axis 120 of the airway tube 100 and at equal distances from the axis 120 of the airway tube 100 at all locations (in Figure 5 In the corresponding embodiment, the ribs 250a extend in the direction perpendicular to the paper surface) and are connected to the walls of the air duct 100 on opposite sides in this direction; in other embodiments, the ribs 250a may extend along the axis 120 of the air duct 100 and be connected to the walls of the air duct 100 on opposite sides in this direction.

[0107] In some embodiments, the rib 250a can be arranged in a spiral around the axis 120 of the airway tube 100 as the central axis. It can be understood that based on the above arrangement, the rib tube 240a can independently define or define together with the wall surface of the airway tube 100 on one side close to the rib tube 240a the inner cavity of the first support rib 200a, and the rib tube 240a can be arranged in the inner cavity, and the rib tube 240a can be arranged in a spiral around the axis 120 of the airway tube 100 as the central axis, thereby forming a spirally surrounded first support rib 200a. In order to conform to the spirally surrounded rib tube 240a and make the first support rib 200a have better support strength, the rib 250a can also be arranged in a spirally surrounded.

[0108] In some embodiments, the thickness of the rib 250a gradually decreases in a direction away from the airway 100. Figure 5 , the thickness of the ribs 250a is uniform along the direction away from the air duct 100. In other embodiments, the thickness of the ribs 250a gradually increases along the direction away from the air duct 100. The specific arrangement of the ribs 250a may be determined according to actual conditions.

[0109] In some embodiments, the first support rib 200a may include a plurality of ribs 250a. Specifically, the ribs 250a may be arranged as two, three or four ribs. Some embodiments of the utility model are described by taking two ribs 250a as an example. Among them, each rib 250a is arranged radially and spaced along the rib tube 240a. In the direction away from the air duct 100, the spacing distance between each rib tube 240a gradually increases, that is, it can adapt to the structure of the arc rib tube 240a, and ensure the stability of the rib 250a supporting the rib tube 240a. In other embodiments, the first support rib 200a may include a plurality of ribs 250a, each rib 250a is arranged radially and spaced along the rib tube 240a. In the direction away from the air duct 100, the spacing between each rib tube 240a is evenly set. It can be determined according to the actual situation.

[0110] In some embodiments, the breathing tube 10 satisfies at least one of the following conditions a)-k):

[0111] a) The wall thickness d1 of the air guide tube 100 satisfies: 0.13 mm ≤ d1 ≤ 0.23 mm. Figure 4 For example, d1 may be 0.13 mm, 0.16 mm, 0.18 mm, 0.21 mm or 0.23 mm, etc. It can be understood that the wall thickness of the air guide tube 100 may be arranged uniformly.

[0112] b) The wall thickness d2 of the first supporting rib 200a satisfies: 0.1mm≤d2≤0.5mm. Figure 4For example, d2 may be 0.1 mm, 0.17 mm, 0.3 mm, 0.45 mm or 0.5 mm, etc. It can be understood that the wall thickness of the first supporting rib 200a may be arranged uniformly or non-uniformly.

[0113] c) The inner diameter D1 of the air guide tube 100 satisfies: 8mm≤D1≤28mm. Figure 3 For example, D1 may be 8 mm, 11 mm, 16 mm, 20 mm, 27 mm or 28 mm, etc. It can be understood that the inner diameters of the airway tube 100 at various locations may be the same or different.

[0114] d) Along the radial direction of the air guide tube 100, the height dimension L1 of the first support rib 200a satisfies: 2.2mm≤L1≤2.8mm. Figure 3 , for example, L1 can be 2.2mm, 2.4mm, 2.5mm, 2.7mm or 2.8mm, etc.

[0115] e) Along the axial direction of the air guide tube 100, the width dimension L2 of the first support rib 200a satisfies: 2mm≤L2≤6mm. Figure 3 , for example, L2 can be 2mm, 2.4mm, 4mm, 4.7mm, 5mm or 6mm, etc.

[0116] It should be noted that the height dimension L1 and the width dimension L2 are the single cross-sectional dimensions of each circle of the first support rib 200a, that is, it can be understood that the cross section of the first support rib 200a along the direction perpendicular to the axis 120 of the air duct 100 includes a plurality of cross-sectional units arranged along the axis 120 of the air duct 100, and the plurality of cross-sectional units are distributed on the outer peripheral walls on both sides of the air duct 100. At this time, the height dimension L1 and the width dimension L2 are the dimensions of a single cross-sectional unit distributed on the outer peripheral wall on the same side of the air duct 100. Next, the strip 130 includes a strip body 131 and a support bar 132, the support bar 132 is connected to one side of the strip body 131 and defines together with the strip body 131 an inner cavity extending along the length direction X of the strip 130, and the support bar 132 is spirally arranged to form the first support rib 200a as an example for explanation. At this time, the height dimension L1 and the width dimension L2 are the height dimension L1 and the width dimension L2 of a single support bar 132.

[0117] f) The first supporting ribs 200a are arranged in a spiral around the axis 120 of the air duct 100, and the lead S of the air duct 100 satisfies: 2mm≤S≤8mm. For example, S can be 2mm, 4mm, 5mm, 7mm or 8mm.

[0118] g) The first support rib 200a is spirally wound around the air duct 100 with the axis 120 of the air duct 100 as the central axis, and a limiting protrusion 300 is provided on the outer peripheral wall surface 110 of the air duct 100. The limiting protrusion 300 abuts against the spiral side edge 230a of the first support rib 200a along the axis 120 of the air duct 100. Figure 3 , along the radial direction of the air guide tube 100 , the height dimension L3 of the limiting protrusion 300 satisfies: 0.3mm≤L1≤1.3mm. For example, L1 can be 0.3mm, 0.5mm, 0.8mm, 0.9mm, 1.2mm or 1.3mm, etc.

[0119] h) The first support rib 200a is spirally wound around the air duct 100 with the axis 120 of the air duct 100 as the central axis, and a limiting protrusion 300 is provided on the outer peripheral wall surface 110 of the air duct 100. The limiting protrusion 300 abuts against the spiral side edge 230a of the first support rib 200a along the axis 120 of the air duct 100. Figure 4 Along the axial direction of the air guide tube 100, the width dimension L3 of the limiting protrusion 300 satisfies: 0.5mm≤L3≤1.5mm. For example, L3 can be 0.3mm, 0.5mm, 0.8mm, 0.9mm, 1.2mm or 1.3mm.

[0120] i) The first support rib 200a is arranged in a spiral around the axis 120 of the air duct 100, and the lead of the first support rib 200a is greater than the width of the first support rib 200a along the axial direction of the air duct 100. The lead of the first support rib 200a is the distance that the tool moves along the axis 120 within the range of the first support rib 200a rotating around the air duct 100.

[0121] j) A second supporting rib 200b is also arranged around the outer periphery of the air guide tube 100. Fig.16 , along the radial direction of the air guide 100 , the height dimension L5 of the second support rib 200 b satisfies: 1.3 mm≤L5≤2.3 mm; illustratively, L5 may be 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, etc.

[0122] k) A second supporting rib 200b is also arranged around the outer periphery of the air guide tube 100. Fig.16 , along the axial direction of the air guide tube 100 , the width dimension L6 of the second support rib 200 b satisfies: 1.5 mm ≤ L6 ≤ 2.5 mm. For example, L6 may be 1.8 mm, 2 mm, 2.2 mm, 2.4 mm, etc.

[0123] In some embodiments, the airway 100 may be configured to be formed by spirally winding a strip 130. It is understood that the strip 130 may be formed by an extrusion process.

[0124] In some embodiments, the material of the airway tube 100 is a transparent material or a translucent material. This solution facilitates direct observation of the flow of gas in the tube by setting the airway tube 100 to a transparent material or a translucent material, avoids the situation where the patient's breathing abnormality cannot be discovered in time, and ensures medical safety. It should be noted that the airway tube 100 should have a certain degree of softness so that the support rib 200 can be compressed or bent.

[0125] In some embodiments, the material of the support rib 200 is a transparent material or a translucent material. By setting the support rib 200 to a transparent material, this solution facilitates observation of the support condition of the support rib 200, that is, when the support rib 200 is broken due to collision or other circumstances, relevant personnel can promptly discover this abnormal condition and take measures to ensure the personal safety of the patient. It should be noted that when the support rib 200 is bent or compressed under natural conditions and with the minimum radius, it should maintain the integrity of the bubble shape without obvious collapse and concave. Specifically, the material of the support rib 200 can be TPE, POE, PP, TPU or PA12, etc.

[0126] The second embodiment of the utility model proposes a medical device, which includes a breathing tube 10 of any of the above embodiments. It is understandable that the medical device can be a ventilator. The breathing tube 10 in the medical device of this scheme is lighter than the existing breathing tube 10, which can ensure the stability of the connection between the breathing tube 10 and the patient, save materials, reduce production costs, and effectively inhibit the heat exchange between the flowing medium in the tube and the external environment, thereby achieving a thermal insulation effect.

[0127] The utility model also provides a processing method for processing the breathing tube 10 in the above embodiment, see Fig.21 , the processing method comprises the following steps:

[0128] S101: Prepare the strip 130. Specifically, the strip 130 can be formed by extrusion using an extruder. It is understood that the material of the strip 130 can be a transparent material or a translucent material. In this solution, by setting the strip 130 to be a transparent material or a translucent material, it is convenient to directly observe the circulation of gas in the tube, avoid the situation where the patient's breathing abnormality cannot be discovered in time, and ensure medical safety. It should be noted that the strip 130 should have a certain degree of softness so that the support rib 200 can be compressed or bent.

[0129] S102: Prepare the support bar 132. The support bar 132 is formed by extrusion using an extruder. It can be understood that the material of the support bar 132 can be a transparent material or a translucent material. This solution makes it easy to observe the support situation of the support bar 132 by setting the support bar 132 to a transparent material, that is, when the support bar 132 is broken due to collisions, etc., the relevant personnel can promptly discover this abnormal situation and take measures to ensure the personal safety of the patient. It should be noted that when the support bar 132 is bent or compressed under natural conditions and with the minimum radius, it should maintain its intact appearance without obvious collapse and concave. Specifically, the material of the support bar 132 can be TPE, POE, PP, TPU or PA12, etc. It depends on the actual situation.

[0130] S103: spirally winding the strip belt 130 around the outer periphery of the forming shaft 630 to form the air guide tube 100. Specifically, the forming shaft 630 can drive the strip belt 130 to rotate so that the strip belt 130 is wound around its outer periphery. It should be noted that the forming shaft 630 can be connected to an external power source to provide power for the conveying and winding of the strip belt 130 and the rotation of the forming shaft 630. Power sources can be set for the strip belt 130 and the forming shaft 630 respectively, or the strip belt 130 and the forming shaft 630 can share a power source. It depends on the actual situation.

[0131] The strip 130 can be stacked and overlapped on the forming shaft 630 at a set pitch to form the air duct 100. Specifically, along the spiral winding direction of the strip body 131, the outer overlapping portion 1312 of each circle of the wound strip body 131 is stacked on the inner overlapping portion 1311 of the previous circle of the wound strip body 131, thereby forming a spiral strip body 131 structure with each circle stacked, that is, forming the air duct 100.

[0132] S104: spirally wrap the support strip 132 around the outer periphery of the air duct 100 to form the first support rib 200a and the second support rib 200b. Specifically, the forming shaft 630 can drive the support strip 132 to rotate so that the support strip 132 is wrapped around the outer periphery of the air duct 100 to form the first support rib 200a and the second support rib 200b. The structures of the first support rib 200a and the second support rib 200b can be the same or different. Some embodiments of the utility model are described by taking the different structures of the first support rib 200a and the second support rib 200b as an example.

[0133] It should be noted that in some embodiments, the air duct 100 may be formed first, that is, the strip 130 may be wound first, and then the first support rib 200a and the second support rib 200b may be formed, that is, the support strip 132 may be wound around the air duct 100, thereby forming the breathing tube 10. In other embodiments, the strip 130 and the support strip 132 may be prepared at the same time, and the support strip 132 may be wound around the air duct 100 while the strip 130 is wound around the forming shaft 630. Some embodiments of the utility model take the latter as an example, that is, the air duct 100, the first support rib 200a and the second support rib 200b are formed at the same time, and this method has higher molding efficiency and can ensure the processing efficiency of the breathing tube 10.

[0134] In some embodiments, the steps of preparing the strip 130 may specifically include:

[0135] The strip 130 is formed by extrusion molding using the first extrusion unit 610. First, the raw materials of the strip 130 can be pre-processed, including processes such as drying, drying and mixing of granular raw materials, to ensure the quality of the raw materials and the processing effect. Secondly, the pre-processed raw materials are placed in the first extrusion unit 610 for melting. The first extrusion unit 610 gradually melts the raw materials into a molten plastic paste through heating, stirring and pressure. Finally, the molten plastic paste is extruded from the die head of the first extrusion unit 610 to form a desired cross-sectional shape.

[0136] The second extrusion unit 620 is used to form the support strip 132 by extrusion molding. The extrusion preparation process of the support strip 132 is similar to that of the strip 130, and will not be repeated here. It can be understood that the second extrusion unit 620 can be the same as the first extrusion unit 610.

[0137] Further, in combination with the arrangement of the heating wire 400, in some embodiments, the step of preparing the strip 130 may specifically include:

[0138] The heating wire 400 and the strip belt 130 are extruded and formed integrally, wherein the heating wire 400 is located inside the strip belt 130 .

[0139] or,

[0140] The step of preparing the support bar 132 includes: extruding the heating wire 400 and the support bar 132 as a whole, wherein the heating wire 400 is located inside the support bar 132;

[0141] or,

[0142] The step of spirally winding the support strip 132 around the outer periphery of the air duct 100 to form the first support rib 200 a includes: spirally winding the heating wire 400 around the outer periphery of the air duct 100 , spirally winding the support strip 132 around the outer periphery of the air duct 100 , and covering the heating wire 400 .

[0143] It can be understood that, in the above steps, the heating wire 400 and the strip 130 / support strip 132 are extruded as a whole, which means that the heating wire 400 is first inserted into the strip 130 / support strip 132, so that the heating wire 400 and the strip 130 / support strip 132 can be extruded and manufactured as a whole at the same time. This method has higher molding efficiency and more stable connection of the heating wire 400; in addition, the heating wire 400 is spirally wound around the outer periphery of the air guide tube 100, and the support strip 132 is spirally wound around the outer periphery of the air guide tube 100. Winding around the outer circumference of the air duct 100 and making the support strip 132 cover the heating wire 400 means that after the heating wire 400 is wound around the outer circumferential wall of the air duct 100, the support strip 132 is spirally wound around the outer circumference of the air duct 100 and covers the heating wire 400, so as to play the role of fixing and pressing the heating wire 400. This method can make the step of winding the heating wire 400 and the step of integral extrusion molding manufacturing not affect each other, which is beneficial to reduce the damage rate of the heating wire 400 and improve the processing quality of integral extrusion molding.

[0144] In some embodiments, the steps of spirally winding the strip 130 around the outer circumference of the forming shaft 630 to form the airway 100 may specifically include:

[0145] The first extrusion unit 610 is disposed beside the molding shaft 630. Specifically, the first extrusion unit 610 may be located on the upper side of the molding shaft 630 along the circumferential direction. The specific arrangement may be determined according to actual conditions.

[0146] During the process of the first extrusion unit 610 forming the strip band 130, the formed strip band 130 is wound around the outer periphery of the forming shaft 630, that is, the air duct 100 can be formed while the strip band 130 is being formed. The strip band 130 just extruded has strong plasticity, which is conducive to winding and forming the air duct 100, that is, it can effectively improve the processing efficiency of the air duct 100 and ensure the processing quality of the air duct 100.

[0147] In some embodiments, the step of spirally winding the support strip 132 around the outer periphery of the air guide tube 100 to form the first support rib 200a and the second support rib 200b may specifically include:

[0148] The second extrusion unit 620 is arranged beside the molding shaft 630. It can be understood that the second extrusion unit 620 can be arranged at a distance from the first extrusion unit 610, and the second extrusion unit 620 can be arranged at a portion other than the end of the molding shaft 630. In the process of the second extrusion unit 620 molding the support bar 132, the molded support bar 132 is wrapped around the outer periphery of the molded air guide tube 100, that is, the first support rib 200a and the second support rib 200b can be molded while molding the support bar 132. The support bar 132 that has just been extruded has strong plasticity, which is conducive to winding and molding the support rib 200, that is, it can effectively improve the processing efficiency of the first support rib 200a and the second support rib 200b and ensure the processing quality.

[0149] In some embodiments, the step of spirally winding the strip 130 around the outer circumference of the forming shaft 630 to form the airway 100 may further include:

[0150] A plurality of spring flexible shafts are arranged along the circumference of the forming shaft 630, and the specific number of the spring flexible shafts can be determined according to the actual situation. The strip belt 130 is spirally wound around each spring flexible shaft, and a driving device is used to drive each spring flexible shaft to move axially along the forming shaft 630 and rotate circumferentially along the forming shaft 630, thereby driving the strip belt 130 to move in a spiral manner, so that the strip belt 130 is spirally wound around the outer periphery of the forming shaft 630. In this solution, by setting a driving device, it is convenient to set air guide tubes 100 of different specifications and sizes according to actual needs, and the molding quality of the air guide tube 100 can be guaranteed.

[0151] In some embodiments, the above-mentioned method of driving each spring flexible shaft to move to drive the strip belt 130 can be specifically expressed as: driving each spring flexible shaft to make a spiral motion along the axial direction of the forming shaft 630, and at the same time, the strip belt 130 is extruded and formed as a whole, and in the process of forming the strip belt 130, the formed strip belt 130 is simultaneously wound around the outer periphery of the forming shaft 630 and covered on the spring flexible shaft. The above-mentioned action can make the strip belt 130 covering the spring flexible shaft move in the opposite direction as the spring flexible shaft spirally moves, so that the strip belt 130 can be automatically spirally wound by the spring flexible shaft, thereby improving the manufacturing efficiency. After the strip belt 130 is wound, the spring flexible shaft can be cut off and pulled out. In some embodiments, while driving each spring flexible shaft, the support strip 132 can also be extruded and formed as a whole, so that the movement of the spring flexible shaft can simultaneously drive the strip belt 130 and the support strip 132 to spirally wind, further improving the manufacturing efficiency. In addition, in order to make it easier for the spring shaft to make spiral motion along the axial direction of the forming shaft 630, a spiral groove can be set along the axial surface of the forming shaft 630 to facilitate the spring shaft to extend into the spiral groove and move along its extension direction.

[0152] In some embodiments, the steps of preparing the support bar 132 may specifically include:

[0153] Prepare two support bars 132. It is understandable that the second extrusion unit 620 can be used to extrude two support bars 132 at the same time, or the second extrusion unit 620 can be used to extrude one of the support bars 132, and an additional extrusion unit can be used to extrude the other support bar 132. Some embodiments of the present application are described using the former (using the second extrusion unit 620 to extrude two support bars 132 at the same time) as an example.

[0154] In some embodiments, the step of spirally winding the support strip 132 around the outer periphery of the airway tube 100 includes:

[0155] The two support bars 132 are spirally wound around the outer circumference of the air duct 100 to form a double spiral structure to form a first support rib 200a and a second support rib 200b. By forming the first support rib 200a and the second support rib 200b, this solution can further improve the stability of the support of the air duct 100, prevent the air duct 100 from being bent significantly, and enhance the thermal insulation performance of the air duct 100.

[0156] The arrangement of the first extrusion unit 610 , the second extrusion unit 620 and the molding shaft 630 in the above embodiment can be seen in the drawings.

[0157] For ease of understanding, the following describes a processing method corresponding to a relatively complete embodiment of the present invention, see Figure 22-Figure 23 , is a flow chart of a processing method provided by another embodiment of the utility model, the method includes but is not limited to the following steps:

[0158] S201: A plurality of spring flexible shafts are arranged along the circumference of the forming shaft 630, so that the strip belt 130 is spirally wound around each spring flexible shaft, and a driving device is used to drive each spring flexible shaft to move axially along the forming shaft 630 and rotate circumferentially along the forming shaft 630, thereby driving the strip belt 130 to move in a spiral direction.

[0159] S202: The first extrusion unit 610 is arranged beside the forming shaft 630, and the formed strip 130 is wound around the outer periphery of the forming shaft 630 during the process of the first extrusion unit 610 forming the strip 130;

[0160] S203: using the first extrusion unit 610 to form the strip 130 by an extrusion molding process;

[0161] S204: Dispose the second extrusion unit 620 beside the forming shaft 630, and in the process of the second extrusion unit 620 forming the support bar 132, wrap the formed support bar 132 around the outer periphery of the formed air guide tube 100;

[0162] S205: Extruding the heating wire 400 and the support bar 132 as a whole, wherein the heating wire 400 is located inside the support bar 132;

[0163] S206: Prepare two support bars 132;

[0164] S207: spirally wrap the two support bars 132 around the outer circumference of the air duct 100 to form a double helix structure, so as to form a first support rib 200a and a second support rib 200b.

[0165] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0166] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0167] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the application concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A breathing tube, characterized in that: include: Airway tube, used to conduct gas; A first support rib connected to the outer peripheral wall of the air guide tube, wherein the first support rib spirally surrounds the outside of the air guide tube with the axis of the air guide tube as the central axis; A second support rib connected to the outer peripheral wall of the air guide tube, wherein the second support rib spirally surrounds the outside of the air guide tube with the axis of the air guide tube as the central axis; as well as The heating wire is spirally arranged around the axis of the air guide tube as the central axis; The first support rib is hollow, and the first support rib and the second support rib form a double helix structure, and the heating wire is located between the inner cavity of the air guide tube and the inner cavity of the first support rib.

2. The breathing tube according to claim 1, characterized in that Along the radial direction of the air guide tube, the height dimension of the second support rib is smaller than the height dimension of the first support rib; and / or, Along the axial direction of the air guide tube, the width of the second support rib is smaller than the width of the first support rib.

3. The breathing tube according to claim 1, wherein: The heating wire is connected to the air guide tube and / or the first supporting rib.

4. The breathing tube according to claim 1, wherein: The heating wire is located in the air guide tube; or, The heating wire is located between the air guide tube and the first supporting rib; or, The heating wire is located inside the first supporting rib.

5. The breathing tube according to claim 1, wherein: The first support rib includes a first side wall connected to the air duct and a second side wall facing away from the air duct. The first side wall and the second side wall together define an inner cavity of the first support rib. The heating wire is located in the first side wall.

6. The breathing tube according to claim 1, wherein: The air guide tube is configured to be formed by spirally winding a strip; The strip belt comprises a belt body, one side of the belt body along its width direction is an inner overlapped portion, and the other side is an outer overlapped portion, the outer overlapped portion of the spirally-shaped belt body is stacked with the inner overlapped portion, and the outer overlapped portion is located on a side of the inner overlapped portion away from the inner cavity of the airway tube; Along the radial direction of the air guide tube, the heating wire is located between the inner overlapped portion and the outer overlapped portion.

7. The breathing tube according to claim 1, wherein: The first supporting rib is spirally wrapped around the outside of the air guide tube with the axis of the air guide tube as the central axis; A limiting protrusion is provided on the outer peripheral wall surface of the air guide tube, and the limiting protrusion abuts against the spiral side edge of the first supporting rib along the axial direction of the air guide tube.

8. The breathing tube according to claim 1, wherein: The outer peripheral wall surface of the air guide tube is provided with two limiting protrusions, and the two limiting protrusions are respectively in contact with two opposite spiral side edges of the first supporting rib along the axial direction of the air guide tube; Along the axial direction of the air guide tube, the heating wire is located between the two limiting protrusions.

9. The breathing tube according to claim 1, wherein: The first support rib is integrally provided with the air guide tube, and the air guide tube is configured to be formed by spirally winding a strip belt, the strip belt includes a belt body and a support bar, the support bar is connected to one side of the belt body and defines an inner cavity extending along the length direction of the strip belt together with the belt body, and the support bar is spirally wound to form the first support rib; and / or, The second support rib is integrally arranged with the air duct, and the air duct is configured to be formed by spirally winding a strip belt, the strip belt includes a belt body and a support strip, the support strip is connected to one side of the belt body and together with the belt body defines an inner cavity extending along the length direction of the strip belt, and the support strip is spirally arranged to form the second support rib.

10. The breathing tube according to claim 1, wherein: The breathing tube satisfies at least one of the following conditions a)-k): a) The wall thickness d1 of the air guide tube satisfies: 0.13mm≤d1≤0.23mm; b) The wall thickness d2 of the first supporting rib satisfies: 0.1 mm ≤ d2 ≤ 0.5 mm; c) The inner diameter D1 of the air guide tube satisfies: 8mm≤D1≤28mm; d) along the radial direction of the air guide tube, a height dimension L1 of the first support rib satisfies: 2.2 mm ≤ L1 ≤ 2.8 mm; e) Along the axial direction of the air guide tube, the width dimension L2 of the first supporting rib satisfies: 2mm≤L2≤6mm; f) The first support ribs are arranged in a spiral shape with the axis of the air guide tube as the central axis, and the lead S of the first support ribs satisfies: 2mm≤S≤8mm; g) The first supporting rib is spirally wrapped around the outside of the air duct with the axis of the air duct as the central axis; a limiting protrusion is provided on the outer peripheral wall of the air duct, and the limiting protrusion abuts against the spiral side of the first supporting rib along the axis direction of the air duct, and along the radial direction of the air duct, the height dimension L3 of the limiting protrusion satisfies: 0.3mm≤L3≤1.3mm; h), the first supporting rib is spirally wrapped around the outside of the air duct with the axis of the air duct as the central axis; a limiting protrusion is provided on the outer peripheral wall of the air duct, the limiting protrusion abuts against the spiral side of the first supporting rib along the axis direction of the air duct, and along the axial direction of the air duct, the width dimension L4 of the limiting protrusion satisfies: 0.5mm≤L4≤1.5mm; i) the first support ribs are arranged in a spiral shape with the axis of the air duct as the central axis, and the lead of the first support ribs is greater than the width of the first support ribs along the axial direction of the air duct; j) A second supporting rib is further arranged around the outer periphery of the air guide tube, and along the radial direction of the air guide tube, a height dimension L5 of the second supporting rib satisfies: 1.3 mm ≤ L5 ≤ 2.3 mm; k) A second supporting rib is further arranged around the outer periphery of the air guide tube, and along the axial direction of the air guide tube, a width dimension L6 of the second supporting rib satisfies: 1.5mm≤L6≤2.5mm.

11. A medical device, characterized in that: A breathing tube comprising any one of claims 1-10.

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