Breathing tube and medical equipment

Abstract

The utility model discloses a breathing tube and medical equipment. The breathing tube comprises an air guide tube and a supporting rib. The gas guide pipe is used for conducting gas, and limiting protrusions are arranged on the peripheral wall face of the gas guide pipe. The supporting ribs are connected to the peripheral wall face of the air guide pipe and arranged around the axis of the air guide pipe. Wherein the supporting rib is arranged in a hollow mode, and one side edge, in the axis direction of the air guide pipe, of the supporting rib abuts against the limiting protrusion. The medical device includes a breathing tube. Compared with an existing breathing tube, the breathing tube is lighter in weight, the stability of connection between the breathing tube and a patient can be guaranteed, materials can be saved, the production cost can be reduced, heat preservation and heat insulation are achieved, and the stability of connection between the air guide tube and the supporting rib is effectively improved.

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 made of thin film, and in order to prevent the breathing tube from bending and causing poor gas flow in the tube, multiple solid reinforcing ribs are arranged around the outer wall of the breathing tube to provide effective support for the breathing tube. However, the addition of reinforcing ribs will increase the overall weight of the breathing tube, which may easily cause the breathing tube to fall off the patient, and it is not easy to keep warm, and condensation water is easily generated on the inner wall of the tube, which may cause medical risks. Utility Model Content

[0004] The main purpose of the utility model is to provide a breathing tube and a medical device, aiming to solve at least one of the above-mentioned defects of the breathing tube.

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

[0006] An air guide tube, used for conducting gas, wherein the outer peripheral wall of the air guide tube is provided with a limiting protrusion; and

[0007] A support rib connected to the outer peripheral wall of the air duct, wherein the support rib is arranged around the axis of the air duct;

[0008] The support rib is hollow, and one of the sides of the support rib along the axis of the air guide tube abuts against the limiting protrusion.

[0009] In some embodiments, the support rib includes a plurality of annular rings, each of which is sleeved outside the air duct, and each of which is spaced apart from each other along the axis of the air duct;

[0010] or,

[0011] The support rib is spirally wound around the outside of the air guide tube with the axis of the air guide tube as the central axis.

[0012] In some embodiments, the support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis;

[0013] 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 axis direction of the air guide tube.

[0014] In some embodiments, two limiting protrusions are provided on the outer peripheral wall surface 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 axis of the air guide tube.

[0015] In some embodiments, the two limiting protrusions are both spirally wrapped around the outer peripheral wall of the air duct with the axis of the air duct as the central axis.

[0016] In some embodiments, the support rib includes a rib tube and a rib, the rib tube is connected to the outer peripheral 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 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.

[0017] In some embodiments, the thickness of the ribs gradually decreases in a direction away from the airway tube.

[0018] In some embodiments, the supporting rib includes 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.

[0019] In some embodiments, the breathing tube satisfies at least one of the following conditions a)-h):

[0020] a) The wall thickness d1 of the air guide tube satisfies: 0.13mm≤d1≤0.23mm;

[0021] b) The wall thickness d2 of the supporting rib satisfies: 0.1mm≤d2≤0.5mm;

[0022] c) The inner diameter D1 of the air guide tube satisfies: 8mm≤D1≤28mm;

[0023] d) Along the radial direction of the air guide tube, the height dimension L1 of the support rib satisfies: 2.2mm≤L1≤2.8mm;

[0024] e) Along the axial direction of the air guide tube, the width dimension L2 of the support rib satisfies: 2mm≤L2≤6mm;

[0025] 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 air guide tube satisfies: 2mm≤S≤8mm;

[0026] 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 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;

[0027] 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, the limiting protrusion abuts against the spiral side of the support rib along the axis of the airway tube, and along the axial direction of the airway tube, the width dimension L4 of the limiting protrusion satisfies: 0.5mm≤L4≤1.5mm;

[0028] 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.

[0029] In some embodiments, the airway tube is configured to be formed by spirally winding a strip.

[0030] In some embodiments, the strip includes a strip body and a protrusion, 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;

[0031] 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.

[0032] In some embodiments, the number of the protrusion is one, so that the air guide tube includes one limiting protrusion, and along the axial direction of the air guide tube, one side of the limiting protrusion abuts against the spiral side edge of one side of the support rib, and the other side of the limiting protrusion abuts against the spiral side edge of the other side of the support rib;

[0033] or,

[0034] The number of the protrusions is two, so that the air guide tube includes two limiting protrusions, and the supporting rib is located between the two limiting protrusions.

[0035] A second aspect of the present invention provides a medical device, comprising a breathing tube as described in any of the above embodiments.

[0036] Compared with the prior art, the beneficial effects of the utility model are:

[0037] In the technical solution of the utility model, the breathing tube includes an airway tube and a support rib, and the airway tube is used to conduct gas. The support rib is connected to the outer peripheral wall of the airway tube and surrounds the axis of the airway tube. On the one hand, when the airway tube of the present application has the same outer dimensions as the existing airway tube, the hollow support ribs of the present solution are lighter than the existing solid reinforcement ribs, which can reduce the risk of the breathing tube falling off and ensure the stability of the connection between the breathing tube and the patient, and can also save the material of the support ribs and reduce the production cost. On the other hand, when the weight of the air duct of the present application is the same as that of the existing air duct, the hollow support ribs of the present solution have a lower thermal conductivity than the solid support ribs, that is, they can effectively inhibit the heat exchange between the flowing medium in the tube and the external environment, enhance the heat preservation and heat insulation effect on the flowing medium, and reduce the amount of condensed water on the tube wall due to the temperature difference. In addition, the volume of the support ribs of the present solution can be larger (when the weight of the air duct of the present application is the same as that of the existing air duct), that is, they can further enhance the supporting effect of the support ribs on the air duct, and reduce the situation where the medium in the air duct is not smoothly circulated due to the bending of the breathing tube. In addition, the outer peripheral wall surface of the air duct is also provided with a limiting protrusion, and one of the side edges of the support rib along the axis of the air duct abuts against the limiting protrusion, that is, the limiting protrusion can realize the clamping connection between the air duct and the support rib. Compared with the direct bonding method of the air duct and the support rib, the present solution can prevent the support rib from detaching from the air duct by adding a limiting protrusion, effectively improving the stability of the connection between the air duct and the support rib. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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.

[0039] Figure 1 This is a cross-sectional view of a breathing tube in an embodiment of the utility model; wherein the supporting ribs are partially hollow;

[0040] Figure 2 This is a cross-sectional view of a breathing tube in an embodiment of the utility model; wherein the supporting ribs are completely hollow;

[0041] Figure 3 It is a cross-sectional view of a breathing tube in one embodiment of the utility model, wherein the supporting ribs and the limiting protrusions are shown;

[0042] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0043] Figure 5It is a partial schematic diagram of a breathing tube in an embodiment of the utility model; wherein a single rib is provided in the rib tube, and the ribs are evenly arranged in a direction away from the air guide tube;

[0044] Figure 6 A breathing tube in an embodiment of the utility model; wherein a single rib is provided in the rib tube, and the thickness of the rib gradually decreases in a direction away from the airway tube;

[0045] Figure 7 This is a breathing tube in an embodiment of the utility model; wherein two ribs are arranged in the rib tube;

[0046] Figure 8 It is a schematic diagram of a strip belt spirally wrapped in one embodiment of the utility model;

[0047] Fig. 9 It is a schematic diagram of the strip belts in one embodiment of the utility model; wherein the strip belts are stacked and arranged.

[0048] Description of Figure Numbers:

[0049] Breathing tube 10;

[0050] Air guide tube 100; peripheral wall surface 110; axis 120; strip 130; strip body 131; inner overlap portion 1311;

[0051] Outer overlap portion 1312; support bar 132; protrusion 133;

[0052] Support rib 200; spiral side 230a; rib tube 240a; rib 250a;

[0053] Limiting protrusion 300;

[0054] Length direction: X; width direction: Y.

[0055] 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

[0056] 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.

[0057] In the related art, the breathing tube is mainly made of thin film, and in order to prevent the breathing tube from bending and causing poor gas flow in the tube, multiple solid reinforcing ribs are arranged around the outer wall of the breathing tube to provide effective support for the breathing tube. However, the addition of reinforcing ribs will increase the overall weight of the breathing tube, which may easily cause the breathing tube to fall off the patient, and it is not easy to keep warm, and condensation water is easily generated on the inner wall of the tube, which may cause medical risks.

[0058] In view of this, the embodiment of the utility model provides a breathing tube 10, which is lighter and can reduce the situation where the breathing tube 10 falls off the patient. Figures 1 to 9 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 and a support rib 200 .

[0059] Reference Figure 1 and Figure 2 , the airway 100 is used to conduct gas to provide respiratory support for the patient. It is understood that the gas may include oxygen. In some embodiments, the airway 100 may be an air inlet duct of the breathing tube 10, that is, the airway 100 may deliver oxygen or air to the patient's lungs. In other embodiments, the airway 100 may also be an air outlet duct of the breathing tube 10, that is, the airway 100 may discharge the patient's exhaled gas. The specific method may depend on the actual situation.

[0060] Reference Figure 3 The outer wall surface 110 of the air duct 100 is provided with a limiting protrusion 300, which can realize the clamping connection between the air duct 100 and the support rib 200, ensure the stability of the connection between the air duct 100 and the support rib 200, and keep the support rib 200 from shifting when the air duct 100 is squeezed and deformed. In some embodiments, the limiting protrusion 300 can be set to a single one. In other embodiments, the limiting protrusion 300 can be set to multiple ones. The specific setting of the limiting protrusion 300 can be determined according to the actual situation. Some embodiments of the present application are described by taking the setting of two limiting protrusions 300 as an example.

[0061] Reference Figure 3 The support ribs 200 are used to support the air duct 100. The support ribs 200 are connected to the outer peripheral wall surface 110 of the air duct 100, and the support ribs 200 are arranged around the axis 120 of the air duct 100. It can be understood that the support ribs 200 can partially surround the axis 120 of the air duct 100, or can completely surround the axis 120 of the air duct 100. Some embodiments of the present application are described by taking the air duct 100 completely surrounding the axis 120 of the air duct 100 as an example.

[0062] Reference Figure 3The support rib 200 is hollow, that is, a cavity can be formed inside the support rib 200, and the wall thickness of the support rib 200 can be determined according to actual conditions. One of the side edges of the support rib 200 along the direction of the axis 120 of the air duct 100 abuts against the limiting protrusion 300. It should be noted that the direction of the axis 120 of the air duct 100 is the extension direction of the air duct 100, and the support rib 200 abuts against the limiting protrusion 300, that is, the clamping connection between the support rib 200 and the air duct 100 can be achieved.

[0063] In the technical solution of the present utility model, the breathing tube 10 includes an airway tube 100 and a support rib 200, and the airway tube 100 is used to conduct gas. The support rib 200 is connected to the outer peripheral wall surface 110 of the airway tube 100 and surrounds the axis 120 of the airway tube 100. On the one hand, when the airway tube 100 of the present application has the same outer dimensions as the existing airway tube 100, the hollow support rib 200 of the present solution is lighter than the existing solid reinforcement rib, which can reduce the risk of the breathing tube 10 falling off and ensure the stability of the connection between the breathing tube 10 and the patient, and can also save the material of the support rib 200 and reduce the production cost. On the other hand, when the weight of the air duct of the present application is the same as that of the existing air duct, the hollow support rib 200 of the present solution has a lower thermal conductivity than the solid support rib, that is, it can effectively inhibit the heat exchange between the flowing medium in the tube and the external environment, enhance the heat preservation and heat insulation effect of the flowing medium, and reduce the amount of condensed water on the tube wall due to the temperature difference. In addition, the volume of the support rib 200 of the present solution can be larger (when the weight of the air duct 100 of the present application is the same as that of the existing air duct), that is, it can further enhance the support effect of the support rib 200 on the air duct 100, and reduce the situation where the medium in the breathing tube 10 is not smoothly circulated due to the bending of the breathing tube 10. In addition, the outer peripheral wall surface 110 of the air duct 100 is also provided with a limiting protrusion 300, and one of the side edges of the support rib 200 along the direction of the axis 120 of the air duct 100 abuts against the limiting protrusion 300, that is, the limiting protrusion 300 can achieve the clamping connection between the air duct 100 and the support rib 200. Compared with the direct bonding method of the air duct 100 and the support rib 200 , the present solution can prevent the support rib 200 from being separated from the air duct 100 by adding the limiting protrusion 300 , thereby effectively improving the stability of the connection between the air duct 100 and the support rib 200 .

[0064] Reference Figure 8 In some embodiments, the support rib 200 is spirally wrapped around the outside of the airway tube 100 with the axis 120 of the airway tube 100 as the central axis. 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 tube 100, the stability of the support rib 200 supporting the airway tube 100 can be further improved, the airway tube 100 can be prevented from being bent significantly, and the situation where foreign objects directly scratch the airway tube 100 can be reduced, so as to ensure that the airway tube 100 can continue to conduct the flowing medium normally.

[0065] The helical angle and pitch of the support rib 200 can be determined according to actual conditions. 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, referring to Figure 3 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 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.

[0066] In some embodiments, the support rib 200 includes a plurality of annular rings. The specific number of annular rings depends on the specific length of the airway tube 100 and the preset spacing size. Each annular ring is sleeved outside the airway tube 100, and each annular ring is arranged one by one along the direction of the axis 120 of the airway tube 100. It can be understood that the annular rings can be evenly spaced or unevenly spaced. Some embodiments of the present application are described by taking the annular rings as being evenly spaced as an example.

[0067] It can be understood that in some embodiments, the annular rings may be arranged at intervals in a direction perpendicular to the axis 120 of the airway tube 100. In other embodiments, the annular rings may be arranged at intervals in a direction inclined to the axis 120 of the airway tube 100. The specific arrangement may depend on the actual situation.

[0068] It should be noted that the sizes of the annular rings can be the same or different. Some embodiments of the present application are described by taking the annular rings of the same size as an example. By providing multiple annular rings, the present solution can achieve stable support for the airway tube 100 and prevent the airway tube 100 from being bent significantly and causing poor gas flow.

[0069] In some embodiments, reference Figure 8 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.

[0070] Reference 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 230a of the support rib 200 along the direction of the axis 120 of the air guide tube 100. It should be noted that the spiral side 230a can be a spiral line on the outer periphery of the air guide tube 100 that abuts 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 a single one or to a plurality of ones. Some embodiments of the present application are described by taking the setting of two limiting protrusions 300 as an example. In different embodiments, the limiting protrusions 300 may be extended or arranged in different forms. For example, the limiting protrusions 300 may be in a dot-shaped protrusion structure, and a plurality of the limiting protrusions 300 in a dot-shaped structure may be distributed on the outer peripheral wall surface 110. The limiting protrusions 300 may also be in a strip shape, and the strip-shaped limiting protrusions 300 may be annularly surrounded by the outer peripheral wall surface 110 of the air duct 100, or may be spirally wound around the outer peripheral wall surface 110 of the air duct 100. Some embodiments of the present application are described by taking two limiting protrusions 300 as an example, and both are spirally wound around the outer peripheral wall surface 110 of the air duct 100.

[0071] In this solution, by providing the limiting protrusion 300, the support rib 200 and the air duct 100 can be clamped together, the stability of the connection between the support rib 200 and the air duct 100 is ensured, and the support rib 200 is prevented from falling off the air duct 100, thereby achieving stable support of the air duct 100 by the support rib 200.

[0072] In some embodiments, the outer peripheral wall surface 110 of the air duct 100 is provided with a limiting protrusion 300, and the limiting protrusion 300 can be set to be single or multiple, depending on the actual situation. The limiting protrusion 300 can abut against one side or both sides of the annular ring along the direction of the axis 120, that is, a single limiting protrusion 300 can be set on one side of the annular ring along the direction of the axis 120, or the limiting protrusion 300 can be set on both sides of the annular ring along the direction of the axis 120. In this way, the clamping connection between the annular ring and the air duct 100 is achieved, the stability of the connection between the annular ring and the air duct 100 is ensured, and the annular ring can stably support the air duct 100.

[0073] Reference Figure 3 In some embodiments, the outer peripheral wall surface 110 of the air duct 100 is provided with two limiting protrusions 300, and the two limiting protrusions 300 are respectively in contact with two opposite spiral side edges 230a of the support rib 200 along the direction of the axis 120 of the air duct 100, that is, the two limiting protrusions 300 can jointly clamp the support rib 200. By providing two limiting protrusions 300, the present solution can further enhance the stability of the connection between the support rib 200 and the air duct 100.

[0074] Reference Figure 8 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 around the end of the airway tube 100 from the head end of the airway tube 100, or can be spirally wound around only a portion of the distance on the airway tube 100 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.

[0075] Reference Figure 5 In some embodiments, the support rib 200 includes 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 disposed 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 present application are described by taking the rib 250a extending along the axis 120 of the air duct 100 as an example.

[0076] 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.

[0077] In some embodiments, reference Figure 6 , the thickness of the rib 250a gradually decreases in the direction away from the air guide tube 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.

[0078] Reference Figure 7In some embodiments, the support rib 200 includes a plurality of ribs 250a. Specifically, the ribs 250a can be set to two, three or four, etc. Some embodiments of the present application are described by taking the setting of two ribs 250a as an example. Among them, each rib 250a is arranged at intervals along the radial direction of the rib tube 240a, and the spacing distance between each rib tube 240a 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 240a, and ensure the stability of the rib 250a supporting the rib tube 240a. In other embodiments, the support rib 200 includes a plurality of ribs 250a, each rib 250a is arranged at intervals along the radial direction of the rib tube 240a, and the spacing between each rib tube 240a is evenly set in the direction away from the air duct 100. The specific situation may depend on the actual situation.

[0079] In some embodiments, the breathing tube 10 satisfies at least one of the following conditions a)-i):

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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 a strip belt 130 including a belt body 131 and a support bar 132. 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. The support bar 132 is spirally arranged to form an embodiment of the support rib 200 as an illustration. 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.

[0086] 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.

[0087] 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 230a of the support rib 200 along the direction of 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: 0.3 mm≤L3≤1.3 mm. For example, L3 may be 0.3 mm, 0.5 mm, 0.8 mm, 0.9 mm, 1.2 mm or 1.3 mm.

[0088] h) The support rib 200 is spirally wrapped around the outside of 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 230a of the support rib 200 along the direction of the axis 120 of the air duct 100. Along the axial direction of the air duct 100, the width dimension L4 of the limiting protrusion 300 satisfies: 0.5mm≤L4≤1.5mm. Exemplarily, L4 can be 0.5mm, 0.8mm, 0.9mm, 1.2mm or 1.3mm, etc.

[0089] i) The support ribs 200 are arranged in a spiral shape with the axis 120 of the air duct 100 as the central axis, 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 .

[0090] In some embodiments, the airway 100 is configured to be formed by spirally winding a strip 130. It is understood that the strip 130 can be formed by an extrusion process. It should be noted that in some embodiments, a single strip 130 can be used to wind the airway 100. In other embodiments, multiple strips 130 can be used to wind the airway 100. Some embodiments of the present application are described by taking a single strip 130 winding the airway 100 as an example.

[0091] Reference Fig. 9 In some embodiments, the strip 130 includes a strip body 131 and a protrusion 133. One side of the strip body 131 along its width direction Y is an inner overlapped portion 1311, and the other side is an outer overlapped portion 1312. The outer overlapped portion 1312 of the spiral strip body 131 is stacked with the inner overlapped portion 1311, and the outer overlapped portion 1312 is located on the side of the inner overlapped portion 1311 away from the inner cavity of the airway 100. It should be noted that the outer overlapped portion 1312 partially overlaps the inner overlapped portion 1311. It can be understood that along the direction of the spiral winding of the strip body 131, the outer overlapped portion 1312 of each circle of the wound strip body 131 is stacked on the inner overlapped portion 1311 of the previous circle of the wound strip body 131, thereby forming a spiral strip body 131 structure with each circle stacked.

[0092] Reference Fig. 9 , the protrusion 133 is connected to the outer overlap portion 1312, and the protrusion 133 extends along the length direction X of the belt body 131. The extension length of the protrusion 133 depends on the length of the belt body 131. The width direction Y of the belt body 131 itself is defined as: along the direction perpendicular to the winding direction of the belt body 131, the relative direction between the two sides of the outer peripheral wall surface 110 of the belt body 131 spirally wound on the air duct 100 is the width direction Y of the belt body 131 itself. Based on the above arrangement, referring to the figure, the spiral protrusion 133 is a limiting protrusion 300, that is, the protrusion 133 forms a limiting protrusion 300 after being wound on the air duct 100. The above arrangement can prevent the structure of the protrusion 133 from being interfered by the spirally wound belt body 131. The belt body 131 and the protrusion 133 of this scheme can be separately formed and then connected and wound, or they can be integrally formed and processed, and the processing efficiency is high.

[0093] 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 230a on one side of the support rib 200, and the other side of the limiting protrusion 300 abuts against the spiral side edge 230a 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.

[0094] Reference Figure 8In 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.

[0095] 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.

[0096] 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 a 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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 utility model concept, or directly / indirectly used 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: An air guide tube, used for conducting gas, wherein the outer peripheral wall of the air guide tube is provided with a limiting protrusion; as well as A support rib connected to the outer peripheral wall of the air duct, wherein the support rib is arranged around the axis of the air duct; The support rib is hollow, and one of the sides of the support rib along the axis of the air guide tube abuts against the limiting protrusion.

2. The breathing tube according to claim 1, characterized in that The support rib includes a plurality of annular rings, each of which is sleeved outside the air guide tube, and each of which is spaced apart from each other along the axis of the air guide tube; or, The support rib is spirally wound around the outside of the air guide tube with the axis of the air guide tube as the central axis.

3. 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 axis direction of the air guide tube.

4. 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 axis direction of the air guide tube.

5. The breathing tube according to claim 4, characterized in that The two limiting protrusions are both spirally wrapped around the outer peripheral wall surface of the air guide tube with the axis of the air guide tube as the central axis.

6. 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.

7. The breathing tube according to claim 6, characterized in that The thickness of the ribs gradually decreases in a direction away from the air guide tube.

8. The breathing tube according to claim 6, wherein: 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.

9. The breathing tube according to claim 1, wherein: The breathing tube satisfies at least one of the following conditions a)-i): 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 air guide tube 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, and the limiting protrusion abuts against the spiral side of the support rib along the axis 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 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 of the airway tube, and along the axial direction of the airway 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.

10. The breathing tube according to claim 1, wherein: The air guide tube is configured to be formed by spirally winding a strip.

11. The breathing tube according to claim 10, wherein: The strip belt comprises a belt body and a convex block, 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; 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.

12. The breathing tube according to claim 11, wherein The number of the protrusion is one, so that the air guide tube includes one limiting protrusion, and along the axial direction of the air guide tube, one side of the limiting protrusion abuts against the spiral side edge of one side of the support rib, and the other side of the limiting protrusion abuts against the spiral side edge of the other side of the support rib; or, The number of the protrusions is two, so that the air guide tube includes two limiting protrusions, and the supporting rib is located between the two limiting protrusions.

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

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