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 supporting rib and a heating wire. The gas-guide tube is used for conducting gas; the supporting ribs are connected to the peripheral wall face of the gas guide pipe and spirally surround the gas guide pipe with the axis of the gas guide pipe as the center axis. The heating wire is spirally wound by taking the axis of the gas guide tube as a central axis; wherein the supporting rib is hollow, and the heating wire is located between an inner cavity of the air guide pipe and an inner cavity of the supporting rib. According to the breathing tube, through the hollow arrangement of the supporting ribs and the arrangement position of the heating wire relative to the supporting ribs, the weight is small on the premise that the same strength is guaranteed, 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 technical 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 thin film, and in order to prevent the breathing tube from bending and causing poor gas flow 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. At the same time, the medium in the breathing tube is prone to heat exchange 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 problem that the rib structure makes the breathing tube too heavy and has poor thermal insulation performance.

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

[0006] Airway tube, used to conduct gas;

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

[0008] The heating wire is spirally arranged around the axis of the air guide tube as the central axis;

[0009] The support rib is hollow, and the heating wire is located between the inner cavity of the air guide tube and the inner cavity of the support rib.

[0010] In some embodiments, the heating wire is connected to the air guide tube and / or the support ribs.

[0011] In some embodiments, the heating wire is located inside the air duct; or, the heating wire is located between the air duct and the support rib; or, the heating wire is located inside the support rib.

[0012] In some embodiments, the 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 support rib, and the heating wire is located in the first side wall.

[0013] 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 support rib along the axial direction of the air guide tube;

[0014] Along the axial direction of the air guide tube, the heating wire is located between the two limiting protrusions.

[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 support rib is spirally wrapped around the airway tube with the axis of the airway tube as the central axis;

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

[0021] The two limiting protrusions are both spirally wrapped around the outside of the air guide tube with the axis of the air guide tube as the central axis.

[0022] In some embodiments, the airway tube is configured to be formed by spirally winding a strip, the strip comprising a strip body and a convex block, one side of the strip 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 strip body are stacked, and the outer overlapped portion is located on a side of the inner overlapped portion away from the inner cavity of the airway tube;

[0023] The convex block is connected to the outer overlapped portion and extends along the length direction of the belt body. The spiral convex block is a limiting protrusion.

[0024] In some embodiments, the support rib includes a rib tube and ribs, the rib tube is connected to the outer wall, the rib is arranged in the rib tube, the side of the rib close to the air duct is connected to the inner wall of the rib tube close to the air duct, and the side of the rib away from the air duct is connected to the inner wall of the rib tube away from the air duct.

[0025] In some embodiments, the ribs are arranged in a spiral shape with the axis of the air duct as the central axis; and / or the thickness of the ribs gradually decreases in the direction away from the air duct; and / or the support ribs include a plurality of ribs, and the ribs are arranged radially spaced apart along the rib tube, and the spacing distance between the rib tubes gradually increases in the direction away from the air duct.

[0026] In some embodiments, the breathing tube satisfies at least one of the following conditions a)-k):

[0027] a) The wall thickness d1 of the airway tube satisfies: 0.13mm≤d1≤0.23mm;

[0028] b) The wall thickness d2 of the supporting rib satisfies: 0.1mm≤d2≤0.5mm;

[0029] c) The inner diameter D1 of the airway tube satisfies: 8mm≤D1≤28mm;

[0030] d) Along the radial direction of the air duct, the height dimension L1 of the support rib satisfies: 2.2mm≤L1≤2.8mm;

[0031] e) Along the axial direction of the air guide tube, the width dimension L2 of the support rib satisfies: 2mm≤L2≤6mm;

[0032] f) The 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 support ribs satisfies: 2mm≤S≤8mm;

[0033] g) The support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis; a limiting protrusion is provided on the outer peripheral wall of the airway tube, and the limiting protrusion abuts against the spiral side of the support rib along the axis direction of the airway tube. Along the radial direction of the airway tube, the height dimension L3 of the limiting protrusion satisfies: 0.3mm≤L3≤1.3mm;

[0034] h) The support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis; a limiting protrusion is provided on the outer peripheral wall of the airway tube, and the limiting protrusion abuts against the spiral side of the support rib along the axis direction of the airway tube. Along the axial direction of the airway tube, the width dimension L4 of the limiting protrusion satisfies: 0.5mm≤L4≤1.5mm;

[0035] i) The 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 support ribs is greater than the width of the support ribs along the axial direction of the air guide tube.

[0036] 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.

[0037] Compared with the prior art, the beneficial effects of the utility model are:

[0038] In the technical solution of the utility model, the breathing tube includes an airway tube, a support rib and a heating wire. The support rib is connected to the outer peripheral wall of the airway tube. The support rib is spirally wound around the outside of the airway tube with the axis of the airway tube as the central axis. The heating wire is spirally wound around the axis of the airway tube as the central axis. Among them, the support rib is hollow, and the heating wire is located between the inner cavity of the airway tube and the inner cavity of the support rib. Compared with the solid ribs, the hollow support ribs of this solution have a lower thermal conductivity. Under the joint action of the hollow support ribs and the inner cavity of the airway tube and the heating wire between the inner cavity of the support rib, the inner cavity of the support rib can have a strong thermal insulation, which can reduce the heat exchange between the flow medium in the tube and the external environment, and can also reduce the condensation water caused by the external environment on the tube wall. Therefore, the breathing tube of the utility model has a smaller weight under the premise of ensuring the same strength through the hollow setting of the support ribs and the setting position of the heating wire relative to the support ribs, 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

[0039] 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.

[0040] Figure 1 This 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;

[0041] Figure 2 This is a cross-sectional schematic diagram showing that all the supporting ribs of the breathing tube in one embodiment of the utility model are hollow, wherein the heating wire is removed;

[0042] 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 supporting rib; wherein, the heating wire is removed;

[0043] Figure 4 for Figure 3 A partial enlarged cross-sectional view of the area around the supporting rib at A in the middle;

[0044] Figure 5It is a partial enlarged cross-sectional view around the supporting rib in one embodiment of the utility model, wherein the heating wire is removed;

[0045] Figure 6 It is a partial cross-sectional schematic diagram of the strip belt and the 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 is removed;

[0046] Figure 7 for Figure 6 A schematic cross-sectional view of a split independent winding unit of a middle strip and a supporting rib, wherein the heating wire is removed;

[0047] Figure 8 It is a partial cross-sectional schematic diagram of a breathing tube in one embodiment of the utility model;

[0048] Fig. 9 for Figure 8 A partial enlarged cross-sectional view at B in the middle shows the relative arrangement of the support ribs and the heating wires;

[0049] Fig.10 The relative arrangement of the support ribs and the heating wire in one embodiment of the utility model;

[0050] Fig.11 The relative arrangement of the support ribs and the heating wire in one embodiment of the utility model;

[0051] Fig.12 It is a partial cross-sectional schematic diagram of a breathing tube in an embodiment of the utility model, wherein the heating wire is removed;

[0052] Fig.13 for Fig.12 A 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;

[0053] 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;

[0054] Fig.15 It is a cross-sectional schematic diagram of the first supporting rib, the second supporting rib and the protrusion of the breathing tube in one embodiment of the utility model being wound together on the strip belt; wherein the second supporting rib, the protrusion and the strip belt are integrally arranged;

[0055] Fig.16 It is a cross-sectional schematic diagram of the first supporting rib, the second supporting rib and the protrusion of the breathing tube in one embodiment of the utility model being wound together on the strip belt; wherein the strip belt is formed by the inner overlapping part and the outer overlapping part being stacked and wound;

[0056] Fig.17It is a cross-sectional schematic diagram of the stacked and wound 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.

[0057] Description of Figure Numbers:

[0058] Breathing tube 10;

[0059] Air guide tube 100; peripheral wall surface 110; axis 120;

[0060] Strip 130; strip body 131; inner overlap portion 1311; outer overlap portion 1312; support strip 132; protrusion 133;

[0061] Support rib 200;

[0062] First supporting rib 200a; first side wall 210; second side wall 220; spiral side edge 230; rib tube 240; rib 250;

[0063] Second supporting rib 200b;

[0064] Limiting protrusion 300;

[0065] Heating wire 400;

[0066] Length direction X;

[0067] Width direction Y.

[0068] 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

[0069] 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.

[0070] 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.

[0071] In the related art, the breathing tube is mainly composed of a thin film, and in order to prevent the breathing tube from bending and causing poor gas flow 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. At the same time, the medium in the breathing tube is prone to heat exchange 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.

[0072] 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 16 The breathing tube 10 of the embodiment of the present invention is described below. Specifically, the breathing tube 10 includes an air guide tube 100 , a support rib 200 and a heating wire 400 .

[0073] 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.

[0074] See also Figure 1-Figure 4 , the support rib 200 is connected to the outer peripheral wall surface 110 of the airway 100, and the support rib 200 is spirally wound around the outside of the airway 100 with the axis 120 of the airway as the central axis. Among them, the direction and pitch of the spiral winding of the support rib 200 can be determined according to the actual situation, and in different embodiments, the value of each pitch formed by each circle of the support rib 200 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 airway 100, this solution can further improve the stability of the support rib 200 supporting the airway 100, prevent the airway 100 from bending significantly, reduce the situation where foreign objects directly scratch the airway 100, and ensure that the airway 100 can continue to conduct the flowing medium normally. In addition, specifically, the pitch of the support rib 200 is greater than the width of two support ribs 200. Preferably, the pitch of the support rib 200 is greater than the width of three support ribs 200. It should be noted that the width of the support rib 200 is explained as follows: Figure 4The 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 surrounding 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 direction of the axis 120 of the airway tube 100 is the width of the support rib 200.

[0075] The heating wire 400 is arranged in a spiral 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 around the outer peripheral wall 110 of the airway tube 100, so as to improve 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 arranged in a spiral 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 arranged in a spiral 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.

[0076] See also Figure 1-Figure 4 , the support rib 200 is hollow, and the wall thickness of the support rib 200 can be determined according to the actual situation. Referring 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 support rib 200 means that it can have a lighter weight under the premise of meeting the same strength index (it can also be understood that it can meet a higher strength index under the premise of having the same weight). Corresponding to the setting of the heating wire 400, the heating wire 400 is located between the inner cavity of the air guide tube 100 and the inner cavity of the support rib 200. It can be understood that the hollow setting of the support rib 200 can also facilitate the arrangement of the heating wire 400. Compared with the existing solid rib structure, the inner cavity of the support rib 200 has 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 caused by the external environment on the tube wall, so that the inner cavity of the support rib 200 can make the heating effect of the heating wire 400 better, which is conducive to improving the heat preservation and heat insulation performance around the heating wire 400.

[0077] It should be noted that, in different embodiments, the support ribs 200 may all be 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 support ribs 200 may be configured so that only part of the winding section is hollow. For example, a hollow support rib 200 may be provided in the portion where the heating wire 400 is required. It is understandable that the above-mentioned partial hollow setting is conducive to reducing manufacturing costs, and the portion of the support rib 200 that is not hollow can be provided as a solid structure, which is conducive to further enhancing the support strength of the support rib 200. For ease of description, the following is an embodiment in which the support ribs 200 can all be hollow as an example, and different embodiments can be combined with each other between different technical solutions.

[0078] In the technical solution of the utility model, the breathing tube 10 includes an airway tube 100, a support rib 200 and a heating wire 400. The support rib 200 is connected to the outer peripheral wall 110 of the airway tube 100. The support rib 200 is spirally wound 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 wound around the axis 120 of the airway tube 100 as the central axis. Among them, the support rib 200 is hollow, and the heating wire 400 is located between the inner cavity of the airway tube 100 and the inner cavity of the support rib 200. Compared with the solid ribs 250, the hollow support ribs 200 of this solution have lower thermal conductivity. Under the joint action of the hollow support ribs 200 and the heating wire 400 between the inner cavity of the air guide tube 100 and the inner cavity of the support ribs 200, the inner cavity of the support ribs 200 can have strong thermal insulation, 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 under the premise of ensuring the same strength through the hollow setting of the support ribs 200 and the setting position of the heating wire 400 relative to the support ribs 200, and is conducive to improving the thermal insulation performance around the heating wire 400, so that the heating effect of the heating wire 400 is better.

[0079] In order to make the support rib 200 play a better supporting role and the winding manufacturing speed is faster, in some embodiments, there may be multiple support ribs 200. Specifically, in some embodiments, the aforementioned support rib 200 can be represented as a first support rib 200a, and the breathing tube 10 can also include a second support rib 200b, the second support rib 200b can be connected to the outer peripheral wall 110 of the airway tube 100, and the second support rib 200b is arranged around the axis 120 of the airway tube 100. Further, the second support rib 200b can be arranged in a spiral around the axis 120 of the airway tube 100 as the central axis, and the second support rib 200b and the support rib 200 are both double helical structures. The second support rib 200b can be arranged as a whole in a hollow configuration; or, the second support rib 200b can define a spiral cavity together with the outer peripheral wall of the airway tube 100.

[0080] 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 support rib 200. For the specific position relationship between the heating wire 400 and the air duct 100 and the support rib 200, see Fig.10 In 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 support rib 200. It can be understood that the heating wire 400 can be clamped between the air duct 100 and the support rib 200 along the direction perpendicular to the axis 120 of the air duct 100, so that the air duct 100 and the support rib 200 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 thermal insulation effect of the support rib 200 is better. For the embodiment in which the support rib 200 itself is stacked and wrapped, the heating wire 400 can also be simultaneously located between two adjacent circles of the winding support rib 200. Please refer to the following text for the specific form. Fig. 9In the third embodiment of the arrangement of the heating wire 400, the heating wire 400 may be located inside the support rib 200. Specifically, in some embodiments, the support rib 200 may include a first side wall 210 connected to the air duct 100 and a second side wall 220 away from the air duct 100. The first side wall 210 and the second side wall 220 together define the inner cavity of the support rib 200. It can be understood that the first side wall 210 and the second side wall 220 are arranged relative to each other in a direction perpendicular to the axis 120 of the air duct 100, and the first side wall 210 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 210. The above arrangement is to allow the heating wire 400 to pass through the thick wall portion of the first side wall 210, so that the heating wire 400 can be spirally wound around the outside of the air duct 100 at the same time as the support rib 200, which is conducive to reducing the manufacturing time and can also make the connection of the heating wire 400 more tightly.

[0081] 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 Fig.12 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.

[0082] Based on the above-mentioned configurations of the inner overlapped portion 1311 and the outer overlapped portion 1312, and combined with the configuration of the heating wire 400, see Fig.14In some embodiments, along the radial direction of the air guide tube 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 support rib 200 form a self-layered 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 support rib 200, and fix the support rib 200 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.

[0083] 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.

[0084] Reference Figure 3-Figure 4 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 230 of the support rib 200 along the axis 120 of the air guide tube 100. It should be noted that the spiral side edge 230 can be a spiral line on the outer periphery of the air guide tube 100 abutting against the spirally arranged support rib 200, that is, the support rib 200 extends along the spiral winding direction and is used to define the side of the inner cavity of the support rib 200. 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.

[0085] 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 the 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 230 on one side of the support rib 200, and the other side of the limiting protrusion 300 abuts against the spiral side edge 230 on the other side of the support rib 200. In this solution, the protrusion 133 is provided, and its material composition is less, which can save processing materials.

[0086] 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 support rib 200 is located between the two limiting protrusions 300, that is, the two limiting protrusions 300 can clamp the support rib 200. The two limiting protrusions 300 provided in this solution can further improve the stability of the connection between the air duct 100 and the support rib 200.

[0087] 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.

[0088] 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 above-mentioned support rib 200 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 230 of the support rib 200 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 abutted against the two sides of the support rib 200, which can play a role in limiting and fixing the support rib 200, and the heating wire 400 is arranged between the two limiting protrusions 300, which can make the support rib 200 have a stronger connection / pressing effect on the heating wire 400, and make the support rib 200 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.

[0089] Regarding the winding form of the support rib 200. In some embodiments, the support rib 200 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 support rib 200 can be formed after the support bar 132 is spirally arranged. That is, when the belt body 131 is spirally wound, the support strips 132 can conform to form a spiral shape to form the support ribs 200 .

[0090] Based on the above embodiments, the support rib 200 is formed by surrounding the support strip 132 and defines an inner cavity together with the belt body 131. Further, the limiting protrusion 300 can have a different positional relationship with the support rib 200. For details, see Figure 12-13 In one 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 spaced apart from each other along the width direction Y of the strip body 131. The two protrusions 133 are spirally arranged to form two limiting protrusions 300. In particular, the support rib 200 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 support rib 200 face one limiting protrusion 300 respectively.

[0091] 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.16 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.

[0092] See also Figure 5In some embodiments, the support rib 200 may include a rib tube 240 and a rib 250, wherein the rib tube 240 is connected to the outer peripheral wall surface 110 of the air duct 100, and the rib 250 is disposed in the rib tube 240. Specifically, in some embodiments, the rib 250 may be arranged to extend along the axis 120 of the air duct 100. In other embodiments, the rib 250 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 250 extending along the axis 120 of the air duct 100 as an example.

[0093] The side of the rib 250 close to the air duct 100 is connected to the inner wall surface of the side of the rib tube 240 close to the air duct 100, and the side of the rib 250 away from the air duct 100 is connected to the inner wall surface of the side of the rib tube 240 away from the air duct 100. That is, the rib 250 divides the rib tube 240 into two independent spiral spaces. By arranging the rib 250 in the rib tube 240, this solution can effectively improve the structural strength of the rib tube 240, improve the stability of the rib tube 240 supporting the air duct 100, and avoid the collapse of the rib tube 240.

[0094] The ribs 250 can have different extending directions, see Figure 5 In some embodiments, the ribs 250 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 250 are in a 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 250 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.

[0095] In some embodiments, the ribs 250 may be arranged in a spiral around the axis 120 of the airway tube 100 as the central axis. It is understandable that, based on the above arrangement, the rib tube 240 may independently define or define together with the wall surface of the airway tube 100 on one side close to the rib tube 240 an inner cavity of the support rib 200, and the rib tube 240 may be arranged in the inner cavity, and the rib tube 240 may be arranged in a spiral around the axis 120 of the airway tube 100 as the central axis, thereby forming a spirally wound support rib 200. In order to conform to the spirally wound rib tube 240 and make the support rib 200 have better support strength, the ribs 250 may also be arranged in a spirally wound.

[0096] In some embodiments, the thickness of the rib 250 gradually decreases in a direction away from the airway 100. In other embodiments, see Figure 5, the thickness of the ribs 250 is uniform along the direction away from the air duct 100. In other embodiments, the thickness of the ribs 250 gradually increases along the direction away from the air duct 100. The specific arrangement of the ribs 250 may be determined according to actual conditions.

[0097] In some embodiments, the support rib 200 includes a plurality of ribs 250. Specifically, the ribs 250 can be set to two, three or four, etc. Some embodiments of the utility model are described by setting two ribs 250 as an example. Among them, each rib 250 is arranged at intervals along the radial direction of the rib tube 240, and the spacing distance between each rib tube 240 gradually increases in the direction away from the air duct 100, that is, it can adapt to the structure of the arc-shaped rib tube 240, and ensure the stability of the rib 250 supporting the rib tube 240. In other embodiments, the support rib 200 includes a plurality of ribs 250, each rib 250 is arranged at intervals along the radial direction of the rib tube 240, and the spacing between each rib tube 240 is evenly set in the direction away from the air duct 100. It can be determined according to the actual situation.

[0098] In some embodiments, the breathing tube 10 satisfies at least one of the following conditions a)-i):

[0099] 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.

[0100] b) The wall thickness d2 of the support rib 200 satisfies: 0.1 mm ≤ d2 ≤ 0.5 mm. Figure 4 For 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 support rib 200 may be arranged uniformly or non-uniformly.

[0101] 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.

[0102] d) Along the radial direction of the air guide tube 100, the height dimension L1 of the support rib 200 satisfies: 2.2 mm ≤ L1 ≤ 2.8 mm. Figure 3 , for example, L1 can be 2.2mm, 2.4mm, 2.5mm, 2.7mm or 2.8mm, etc.

[0103] e) Along the axial direction of the air guide tube 100, the width dimension L2 of the support rib 200 satisfies: 2mm≤L2≤6mm. Figure 3 , for example, L2 can be 2mm, 2.4mm, 4mm, 4.7mm, 5mm or 6mm, etc.

[0104] It should be noted that the above-mentioned height dimension L1 and width dimension L2 are single cross-sectional dimensions of each circle of the support rib 200. The following is an example of a strip belt 130 including a belt body 131 and a support bar 132, wherein the support bar 132 is connected to one side of the belt body 131 and together with the belt body 131 defines an inner cavity extending along the length direction X of the strip belt 130, and the support bar 132 is spirally arranged to form a support rib 200. 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.

[0105] f) The support ribs 200 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.

[0106] g) 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, 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 230 of the support rib 200 along the axis 120 of the air duct 100. Figure 4 , 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.

[0107] h) 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, 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 230 of the support rib 200 along the axis 120 of the air duct 100. Figure 3 Along the axial direction of the air guide tube 100, the width dimension L3 of the limiting protrusion 300 satisfies: 0.5mm≤L1≤1.5mm. For example, L1 can be 0.3mm, 0.5mm, 0.8mm, 0.9mm, 1.2mm or 1.3mm.

[0108] i) The support ribs 200 are arranged in a spiral around the axis 120 of the air duct 100, and the lead of the support ribs 200 is greater than the width of the support ribs 200 along the axial direction of the air duct 100. The lead of the support ribs 200 is the distance that the tool moves along the axis 120 within the range of one rotation of the support ribs 200 around the air duct 100.

[0109] In some embodiments, the air guide tube 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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 support rib connected to the outer peripheral wall of the air guide tube, wherein the 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; Wherein, the support rib is hollow, and the heating wire is located between the inner cavity of the air guide tube and the inner cavity of the support rib.

2. The breathing tube according to claim 1, characterized in that The heating wire is connected to the air guide tube and / or the supporting rib.

3. 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 support rib; or, The heating wire is located inside the supporting rib.

4. The breathing tube according to claim 1, wherein: The 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 support rib. The heating wire is located in the first side wall.

5. 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 abutted against two opposite spiral side edges of the support 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.

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 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 surface of the air guide tube, and the limiting protrusion abuts against the spiral side edge of the support rib along the axial direction of the air guide tube.

8. The breathing tube according to claim 7, characterized in that The outer peripheral wall surface of the air guide tube is provided with two limiting protrusions, and the two limiting protrusions are respectively abutted against two opposite spiral side edges of the support rib along the axial direction of the air guide tube; The two limiting protrusions are both spirally wrapped around the outside of the air guide tube with the axis of the air guide tube as the central axis.

9. The breathing tube according to claim 7, characterized in that The airway tube is configured to be formed by spirally winding a strip, the strip comprising a strip body and a convex block, one side of the strip 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 strip 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; The protrusion is connected to the outer overlapped portion and extends along the length direction of the belt body. The spiral protrusion is the limiting protrusion.

10. The breathing tube according to claim 1, wherein: The supporting rib includes a rib tube and a rib, the rib tube is connected to the outer peripheral wall surface, the rib is arranged in the rib tube, the side of the rib close to the air duct is connected to the inner wall surface of the rib tube close to the air duct, and the side of the rib away from the air duct is connected to the inner wall surface of the rib tube away from the air duct.

11. The breathing tube according to claim 10, wherein: The ribs are arranged in a spiral shape with the axis of the air guide tube as the central axis; and / or, The thickness of the ribs gradually decreases in a direction away from the air guide tube; and / or, The supporting rib comprises a plurality of ribs, and the ribs are spaced apart in a radial direction of the rib tube, and the spacing distance between the rib tubes gradually increases in a direction away from the air guide tube.

12. 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 supporting rib satisfies: 0.1mm≤d2≤0.5mm; c) The inner diameter D1 of the air guide tube satisfies: 8mm≤D1≤28mm; d) Along the radial direction of the air guide tube, the height dimension L1 of the support rib satisfies: 2.2mm≤L1≤2.8mm; e) Along the axial direction of the air guide tube, the width dimension L2 of the support rib satisfies: 2mm≤L2≤6mm; f) The 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 support ribs satisfies: 2mm≤S≤8mm; g) the support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis; a limiting protrusion is provided on the outer peripheral wall of the airway tube, the limiting protrusion abuts against the spiral side of the support rib along the axis direction of the airway tube, and along the radial direction of the airway tube, the height dimension L3 of the limiting protrusion satisfies: 0.3mm≤L3≤1.3mm; h), the 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, the limiting protrusion abuts against the spiral side of the 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; i) The support ribs are arranged in a spiral shape with the axis of the air duct as the central axis, and the lead of the support ribs is greater than the width of the support ribs along the axial direction of the air duct.

13. A medical device, characterized in that: A breathing tube comprising any one of claims 1-12.

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