Breathing tubes and medical equipment

Abstract

The utility model discloses a breathing tube and a medical device. The breathing tube includes an airway tube, a first support rib and a second support rib. The airway tube is used to conduct gas. The first support rib is connected to the outer peripheral wall of the airway tube, and the first support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the center axis. The second support rib is connected to the outer peripheral wall of the airway tube, and the second support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the center axis. Among them, the first support rib and the second support rib are both hollow, and the first support rib and the second support rib form a double helix structure. The medical device includes a breathing tube. The breathing tube and the medical device of the utility model can enhance the heat preservation and heat insulation effect of the flowing medium in the airway tube, improve the support effect of the airway tube, prevent the breathing tube from bending significantly, and can improve the processing efficiency of the breathing tube.

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, a plurality of solid reinforcing ribs are arranged around the outer wall of the breathing tube to provide effective support for the breathing tube. However, 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, and condensation water is easily formed on the inner wall, which affects the gas supply quality to the patient. 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 of poor thermal insulation performance of the breathing tube.

[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 first support rib connected to the outer peripheral wall of the air duct, the first support rib spirally surrounding the outside of the air duct with the axis of the air duct as the central axis; and

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

[0009] Wherein, the first supporting rib and the second supporting rib are both hollow, and the first supporting rib and the second supporting rib form a double helix structure.

[0010] In some embodiments, the first support rib is integrally provided with the air guide tube;

[0011] and / or,

[0012] The second supporting rib is integrally arranged with the air guide tube.

[0013] In some embodiments, along the radial direction of the air guide tube, the height dimension of the second support rib is smaller than the height dimension of the first support rib;

[0014] and / or,

[0015] Along the axial direction of the air guide tube, the width of the second support rib is smaller than the width of the first support rib.

[0016] In some embodiments, the airway tube is configured to be formed by spirally winding a strip.

[0017] In some embodiments, the strip belt includes a belt body and a support strip, wherein the support strip is connected to one side of the belt body and defines an inner cavity extending along the length direction of the strip belt together with the belt body;

[0018] The support bars are spirally arranged to form the first support ribs.

[0019] In some embodiments, the strip belt further comprises a protrusion, the protrusion is connected to the belt body and is located on the same side as the support strip, the protrusion extends along the length direction of the belt body and is spaced apart from the support strip along the width direction of the belt body;

[0020] The protrusion is spirally arranged to form a limiting protrusion, and the first supporting rib is located between the limiting protrusion and the second supporting rib.

[0021] In some embodiments, the strip belt further comprises two protrusions, the two protrusions are connected to the belt body and are located on the same side as the support strip, the two protrusions extend along the length direction of the belt body and are spaced apart from each other along the width direction of the belt body;

[0022] The two protrusions are spirally arranged to form two limiting protrusions, and the first supporting rib is located between the two limiting protrusions.

[0023] In some embodiments, the airway tube is configured to be formed by spirally winding a strip;

[0024] The strip belt comprises a belt body and a support strip, wherein the support strip is connected to one side of the belt body and defines an inner cavity extending along the length direction of the strip belt together with the belt body;

[0025] The support bars are spirally arranged to form the second support ribs.

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

[0027] a) The wall thickness d of the air guide tube 1 Satisfy: 0.13mm≤d 1≤0.23mm;

[0028] b) The wall thickness d of the first supporting rib 2 Satisfy: 0.1mm≤d 2 ≤0.5mm;

[0029] c) The inner diameter D of the airway tube 1 Satisfy: 8mm≤D 1 ≤28mm;

[0030] d) Along the radial direction of the air guide tube, the height dimension L of the first support rib is 1 Meet: 2.2mm≤L 1 ≤2.8mm;

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

[0032] f) The first support ribs are arranged in a spiral shape with the axis of the air guide tube as the central axis, and the lead S of the first support ribs satisfies: 2mm≤S≤8mm;

[0033] g) The first support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis; 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 first support rib along the axis of the airway tube, and the height dimension L of the limiting protrusion along the radial direction of the airway tube is 3 Meet: 0.3mm≤L 3 ≤1.3mm;

[0034] h), the first support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis; 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 first support rib along the axis of the airway tube, and along the axial direction of the airway tube, the width dimension L of the limiting protrusion is 4 Meet: 0.5mm≤L 4 ≤1.5mm;

[0035] i) the first support ribs are arranged in a spiral shape with the axis of the air duct as the central axis, and the lead of the first support ribs is greater than the width of the first support ribs along the axial direction of the air duct;

[0036] j) A second supporting rib is also arranged around the outer periphery of the air guide tube, and along the radial direction of the air guide tube, the height dimension L of the second supporting rib is 5 Meet: 1.3mm≤L 5 ≤2.3mm;

[0037] k) A second support rib is also arranged around the outer periphery of the air guide tube. The width dimension L of the second support rib is 100 mm along the axial direction of the air guide tube. 6 Meet: 1.5mm≤L 6 ≤2.5mm. A second aspect of the present invention provides a medical device, comprising the breathing tube as described in the above embodiment.

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

[0039] In the technical solution of the utility model, the breathing tube includes an airway tube, a first support rib and a second support rib. The first support rib is connected to the outer peripheral wall of the airway tube, and the first support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis. The second support rib is connected to the outer peripheral wall of the airway tube, and the second support rib is spirally wrapped around the outside of the airway tube with the axis of the airway tube as the central axis. Compared with the solution of the existing breathing tube using solid support ribs, the first support rib and the second support rib arranged in hollow in this solution have lower thermal conductivity, 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 insulation effect of the flowing medium, and reduce the amount of condensed water generated on the tube wall due to temperature difference. Compared with the solution of the existing breathing tube using a single solid support rib, the first support rib and the second support rib arranged in hollow in this solution form a double helix structure, which can effectively improve the support effect of the airway tube, and can not only reduce the situation where the medium in the breathing tube is not smoothly circulated due to the bending of the breathing tube, but also save support rib materials and reduce production costs. In addition, when the pitch of the preset support ribs is constant, compared with the prior art method of spirally winding the air guide tube with a single solid rib, the present solution uses the first support rib and the second support rib to spirally surround the air guide tube at the same time, which is more efficient and can further improve the processing efficiency of the breathing tube. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0041] Figure 1 This is a cross-sectional schematic diagram of a breathing tube in an embodiment of the utility model; wherein the first supporting rib is partially hollow;

[0042] Figure 2 This is a cross-sectional schematic diagram of a breathing tube in an embodiment of the utility model; wherein the first supporting rib is completely hollow;

[0043] Figure 3 It is a cross-sectional schematic diagram of a breathing tube in an embodiment of the utility model, wherein the first supporting rib and the limiting protrusion are shown;

[0044] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0045] Figure 5 It is a cross-sectional schematic diagram of a breathing tube in an embodiment of the utility model, wherein a first supporting rib and a second supporting rib are shown;

[0046] Figure 6 for Figure 5 A partial enlarged view of point D in the middle;

[0047] Figure 7 It is a schematic diagram of a strip belt in an embodiment of the utility model; wherein the support strip, the protrusion and the strip belt are arranged integrally;

[0048] Figure 8 Schematic diagram of a strip belt in one embodiment of the utility model; wherein, a schematic diagram of a belt body and a protrusion being spirally wound;

[0049] Fig. 9 It is a schematic diagram of a strip belt in an embodiment of the utility model; wherein the support strip and the protrusion are arranged integrally;

[0050] Fig.10 It is a schematic diagram of a first extrusion unit, a second extrusion unit and a molding shaft according to an embodiment of the utility model;

[0051] Fig.11 This is an operation flow chart of a method for processing a breathing tube according to an embodiment of the present invention;

[0052] Fig.12 This is an operation flow chart of a method for processing a breathing tube according to another embodiment of the present invention.

[0053] Description of Figure Numbers:

[0054] Breathing tube 10;

[0055] Air guide tube 100; peripheral wall surface 110; axis 120; strip 130; strip body 131; inner overlap portion 1311; outer overlap portion 1312; support strip 132; protrusion 133;

[0056] First supporting rib 200a; spiral side 230a;

[0057] Second supporting rib 200b;

[0058] Limiting protrusion 300;

[0059] First extrusion unit 410; second extrusion unit 420; forming shaft 430;

[0060] Length direction: X; width direction: Y.

[0061] 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

[0062] 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.

[0063] 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, a plurality of solid reinforcing ribs are arranged around the outer wall of the breathing tube to provide effective support for the breathing tube. However, the medium in the breathing tube is easy to exchange heat with the external environment through the outer wall of the breathing tube and the solid reinforcing ribs, so the thermal insulation performance of the breathing tube is poor, which will affect the quality of gas supply to the patient.

[0064] In view of this, an embodiment of the present invention provides a breathing tube 10, which is conducive to improving the thermal insulation effect of the breathing tube 10 and enhancing the user experience. Figures 1 to 10 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 first supporting rib 200a and a second supporting rib 200b.

[0065] 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.

[0066] See also Figure 2, the first support rib 200a is connected to the outer peripheral wall surface 110 of the air duct 100, and the first support rib 200a is spirally wrapped around the outside of the air duct 100 with the axis 120 of the air duct as the central axis. Among them, the direction and pitch of the spiral wrapping of the first support rib 200a can be determined according to the actual situation. In different embodiments, the value of each pitch formed by the spiral wrapping of the first support rib 200a can be the same or different. It can be understood that the spiral line can be a left spiral line or a right spiral line. By arranging the first support rib 200a spirally around the air duct 100, this solution can improve the stability of the support rib supporting the air duct 100, prevent the air duct 100 from being bent significantly, and ensure that the air duct 100 can continue to conduct the flowing medium normally.

[0067] See also Figure 5 , the second support rib 200b is connected to the outer peripheral wall surface 110 of the airway 100, and the second support rib 200b is spirally wrapped around the outside of the airway 100 with the axis 120 of the airway as the central axis. It can be understood that the second support rib 200b and the first support rib 200a can be spirally wrapped around the outside of the airway 100 in the same or similar form. Therefore, the structure and surrounding arrangement of the second support rib 200b can refer to the first support rib 200a. In different embodiments, the structure or surrounding arrangement of the second support rib 200b and the first support rib 200a can be the same or different. In some embodiments, the first support rib 200a or the second support rib 200b can partially spirally wrap around the axis 120 of the airway 100. In other embodiments, the first support rib 200a or the second support rib 200b can also completely spirally wrap around the axis 120 of the airway 100. Refer to Figure 8 In some embodiments of the present application, the first support rib 200a and the second support rib 200b are used to completely surround the axis 120 of the air duct 100. Based on the above definition, it can be understood that the first support rib 200a and the second support rib 200b can both be used to support the air duct 100, further improving the stability of the support of the air duct 100.

[0068] See also Figure 5 The first support rib 200a and the second support rib 200b are hollow, and the wall thickness of the first support rib 200a and the second support rib 200b can be determined according to the actual situation. In some embodiments, the first support rib 200a can be completely hollow. Figure 1 In other embodiments, the first support rib 200a may also be partially hollow. The partially hollow first support rib 200a is conducive to reducing processing costs, and the non-hollow first support rib 200a portion may be set as a solid structure, thereby effectively improving the support strength of the first support rib 200a.

[0069] The second support rib 200b is similar to the arrangement of the first support rib 200a. Figure 5 and Figure 6 In some embodiments, the second support rib 200b can be completely hollow. In other embodiments, the second support rib 200b can also be partially hollow. The partially hollow second support rib 200b is conducive to reducing processing costs, and the non-hollow second support rib 200b can be partially solid, thereby effectively improving the support strength of the second support rib 200b. Some embodiments of the present application are described by taking the first support rib 200a and the second support rib 200b as examples in which both the first support rib 200a and the second support rib 200b are completely hollow. The specific hollow arrangement of the second support rib 200b and the first support rib 200a can be the same or different. It depends on the actual situation.

[0070] In the technical solution of the present utility model, the breathing tube 10 includes an air duct 100, a first support rib 200a and a second support rib 200b. The first support rib 200a is connected to the outer peripheral wall surface 110 of the air duct 100, and the first support rib 200a is spirally wound around the outside of the air duct 100 with the axis 120 of the air duct 100 as the central axis. The second support rib 200b is connected to the outer peripheral wall surface 110 of the air duct 100, and the second support rib 200b is spirally wound around the outside of the air duct 100 with the axis 120 of the air duct 100 as the central axis. Compared with the solution of the existing breathing tube 10 using solid support ribs, the first support rib 200a and the second support rib 200b of the hollow arrangement in this solution have lower thermal conductivity, 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. Compared with the existing solution of using a single solid support rib for the breathing tube 10, the hollow first support rib 200a and the second support rib 200b of the present solution form a double helix structure, which can effectively improve the support effect of the airway tube 100, and can not only reduce the situation where the breathing tube 10 is bent sharply and the medium inside it is not smoothly circulated, but also save support rib materials and reduce production costs. In addition, when the pitch of the support ribs is preset to be constant, compared with the existing method of spirally winding the airway tube 100 using a single solid rib, the present solution uses the first support rib 200a and the second support rib 200b to spirally surround the airway tube 100 at the same time, which is more efficient and can further improve the processing efficiency of the breathing tube 10.

[0071] The following describes the related configuration of the first support rib 200a and the air guide tube 100. Fig. 9In some embodiments, the first support rib 200a is integrally provided with the airway tube 100, that is, the first support rib 200a can be integrally formed with the airway tube 100, which can effectively improve the processing efficiency of the breathing tube 10. In other embodiments, the first support rib 200a is separately provided with the airway tube 100. That is, the airway tube 100 and the first support rib 200a can be formed separately, and then the airway tube 100 and the first support rib 200a are assembled and connected. Specifically, the first support rib 200a can be clamped to the outer peripheral wall surface 110 of the airway tube 100, or it can be bonded to the outer peripheral wall surface 110 of the airway tube 100. The specific situation can be determined according to the actual situation.

[0072] The following describes the related configuration of the second supporting rib 200b and the air guide tube 100. Figure 7 In some embodiments, the second support rib 200b is integrally provided with the airway tube 100, that is, the second support rib 200b can be integrally formed with the airway tube 100, which can effectively improve the processing efficiency of the breathing tube 10. In other embodiments, the second support rib 200b is separately provided with the airway tube 100. That is, the airway tube 100 and the second support rib 200b can be formed separately, and then the airway tube 100 and the second support rib 200b are assembled and connected. The second support rib 200b can be clamped to the outer peripheral wall surface 110 of the airway tube 100, or it can be bonded to the outer peripheral wall surface 110 of the airway tube 100. The specific situation can be determined according to the actual situation.

[0073] The first supporting rib 200a and the second supporting rib 200b may have different structural forms. Figure 5 , with respect to the height dimensions of the first support rib 200a and the second support rib 200b, in some embodiments, along the radial direction of the air duct 100, the height dimension of the second support rib 200b is smaller than the height dimension of the first support rib 200a. The height dimension of the first support rib 200a is defined as: the distance from one end of the first support rib 200a close to the axis 120 of the air duct 100 to one end of the first support rib 200a away from the axis 120 of the air duct 100 along the direction perpendicular to the axis 120 of the air duct 100. Similarly, the height dimension of the second support rib 200b is defined as: the distance from one end of the second support rib 200b close to the axis 120 of the air duct 100 to one end of the second support rib 200b away from the axis 120 of the air duct 100 along the direction perpendicular to the axis 120 of the air duct 100. It can be understood that the above-mentioned height limitation means that along the direction perpendicular to the axis 120 of the air guide tube 100, the height of the first support rib 200a is greater than the height of the second support rib 200b. This arrangement can reduce the manufacturing cost of the breathing tube 10 and reduce the weight of the breathing tube 10.

[0074] On the other hand, see Figure 5, for the width dimensions of the first support rib 200a and the second support rib 200b, in some embodiments, along the axial direction of the air duct 100, the width dimension of the second support rib 200b is smaller than the width dimension of the first support rib 200a. The width dimension of the first support rib 200a is defined as: the distance from one end of the first support rib 200a along the direction of the axis 120 of the air duct 100 to the other opposite end. Similarly, the height dimension of the second support rib 200b is defined as: the distance from one end of the second support rib 200b along the direction of the axis 120 of the air duct 100 to the other opposite end. It can be understood that the above-mentioned width limitation means that along the direction of the axis 120 of the air duct 100, the width of the first support rib 200a is greater than the width of the second support rib 200b. This setting can reduce the manufacturing cost of the breathing tube 10 and reduce the weight of the breathing tube 10, and it can also facilitate the control and adjustment of the distance between the first support rib 200a and the second support rib 200b.

[0075] Reference Figure 8 In some embodiments, the air duct 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 air duct 100. In other embodiments, multiple strips 130 can be used to wind the air duct 100. Some embodiments of the present application are described by taking a single strip 130 winding the air duct 100 as an example.

[0076] For the winding form of the first supporting rib 200a or the second supporting rib 200b. Fig. 9 In some embodiments, the first support rib 200a can be integrally provided with the airway 100, and the airway 100 can be configured to be formed by spirally winding the strip 130. The strip 130 includes a strip body 131 and a support bar 132. The support bar 132 is connected to one side of the strip body 131 and defines an inner cavity extending along the length direction X of the strip 130 together with the strip body 131. It can be understood that the support bar 132 can extend along the length direction X of the strip body 131, and the cross section of the support bar 132 can be semicircular, arched, open rectangular, etc., so that the wall surface of the strip body 131 away from the inner cavity of the breathing tube 10 can define an inner cavity extending along the length direction X of the strip 130 together with the support bar 132. The support bar 132 can form the first support rib 200a after being spirally arranged. That is, when the strip body 131 is spirally wound, the support bar 132 can conform to form a spiral shape to form the first support rib 200a.

[0077] Reference Figures 7 to 9In some embodiments, the strip 130 further includes a protrusion 133, which is connected to the strip body 131 and is located on the same side as the support strip 132. The protrusion 133 extends along the length direction X of the strip body 131 and is arranged at intervals with the support strip 132 along the width direction Y of the strip body 131. The extension length of the protrusion 133 depends on the length of the strip body 131. The width direction Y of the strip body 131 itself is defined as: along the direction perpendicular to the winding direction of the strip body 131, the relative direction between the two sides of the strip body 131 spirally wound around the outer peripheral wall surface 110 of the air guide tube 100 is the width direction Y of the strip body 131 itself.

[0078] Reference Figure 5 The protrusion 133 is spirally arranged to form a limiting protrusion 300, and the first support rib 200a is located between the limiting protrusion 300 and the second support rib 200b. That is, the protrusion 133 can limit the first support rib 200a and the second support rib 200b, improve the stability of the first support rib 200a and the second support rib 200b connected to the air duct 100, and prevent the support rib from falling off the air duct 100.

[0079] Reference Figure 5 In some embodiments, the strip 130 further includes two protrusions 133. The two protrusions 133 are connected to the strip body 131 and are located on the same side as the support strip 132. 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, and the first support rib 200a is located between the two limiting protrusions 300. The two limiting protrusions 300 provided in this solution can further improve the stability of the connection between the air duct 100 and the first support rib 200a.

[0080] Similarly, for the second supporting rib 200b, see Fig. 9 In some embodiments, the second support rib 200b can be integrally provided with the airway 100. The airway 100 can be configured to be formed by spirally winding a strip 130. The strip 130 includes a strip body 131 and a support bar 132. The support bar 132 can be connected to one side of the strip body 131 and together with the strip body 131 define an inner cavity extending along the length direction X of the strip 130. The support bar 132 can be spirally arranged to form a second support rib 200b. It can be understood that the method of winding the second support rib 200b in this embodiment is similar to the method of winding the second support rib 200b in the previous embodiment.

[0081] In some embodiments, the breathing tube 10 satisfies at least one of the following conditions a)-k):

[0082] 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.

[0083] b) The wall thickness d2 of the supporting ribs shall meet the following requirements: 0.1mm≤d2≤0.5mm. 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 ribs may be arranged uniformly or non-uniformly.

[0084] 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.

[0085] d) Along the radial direction of the air guide tube 100, the height dimension L1 of the first support rib 200a satisfies: 2.2mm≤L1≤2.8mm. Figure 3 , for example, L1 can be 2.2mm, 2.4mm, 2.5mm, 2.7mm or 2.8mm, etc.

[0086] e) Along the axial direction of the air guide tube 100, the width dimension L2 of the first support rib 200a satisfies: 2mm≤L2≤6mm. Figure 3 , for example, L2 can be 2mm, 2.4mm, 4mm, 4.7mm, 5mm or 6mm, etc.

[0087] It should be noted that the height dimension L1 and the width dimension L2 are the single cross-sectional dimensions of each circle of the first support rib 200a, that is, it can be understood that the cross section of the first support rib 200a along the direction perpendicular to the axis 120 of the air duct 100 includes a plurality of cross-sectional units arranged along the direction of the axis 120 of the air duct 100, and the plurality of cross-sectional units are distributed on the peripheral walls on both sides of the air duct 100. At this time, the height dimension L1 and the width dimension L2 are the dimensions of a single cross-sectional unit distributed on the peripheral wall on the same side of the air duct 100. Next, the strip 130 includes a strip body 131 and a support bar 132, the support bar 132 is connected to one side of the strip body 131 and defines together with the strip body 131 an inner cavity extending along the length direction X of the strip 130, and the support bar 132 is spirally arranged to form the first support rib 200a as an example for explanation. At this time, the height dimension L1 and the width dimension L2 are the height dimension L1 and the width dimension L2 of a single support bar 132.

[0088] f) The support ribs 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.

[0089] g) The support rib 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 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.

[0090] h) The support rib is spirally wrapped 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 along the direction of the axis 120 of the air duct 100. Figure 3 Along the axial direction of the air guide tube 100 , the width dimension L4 of the limiting protrusion 300 satisfies: 0.5 mm ≤ L4 ≤ 1.5 mm. For example, L4 may be 0.5 mm, 0.8 mm, 0.9 mm, 1.2 mm or 1.3 mm.

[0091] i) The first support rib 200a is arranged in a spiral around the axis 120 of the air duct 100, and the lead of the first support rib 200a is greater than the width of the first support rib 200a along the axial direction of the air duct 100. The lead of the first support rib 200a is the distance that the tool moves along the axis 120 within the range of the first support rib 200a rotating around the air duct 100.

[0092] j) A second supporting rib 200b is also arranged around the outer periphery of the air guide tube 100. Figure 6 , along the radial direction of the air guide 100 , the height dimension L5 of the second support rib 200 b satisfies: 1.3 mm≤L5≤2.3 mm; illustratively, L5 may be 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, etc.

[0093] k) A second supporting rib 200b is also arranged around the outer periphery of the air guide tube 100. Figure 6, along the axial direction of the air guide tube 100 , the width dimension L6 of the second support rib 200 b satisfies: 1.5 mm ≤ L6 ≤ 2.5 mm. For example, L6 may be 1.8 mm, 2 mm, 2.2 mm, 2.4 mm, etc.

[0094] 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.

[0095] Reference Fig.11 A method for processing a breathing tube is described below, which is used to process the breathing tube 10 in the above embodiment. The processing method includes the following steps:

[0096] S101: Prepare the strip 130. Specifically, the strip 130 can be formed by extrusion using an extruder. It is understood that the material of the strip 130 can be a transparent material or a translucent material. By setting the strip 130 to be a transparent material or a translucent material, this solution facilitates direct observation of the circulation of gas in the tube, avoids the situation where the patient's breathing abnormality cannot be discovered in time, and ensures medical safety. It should be noted that the strip 130 should have a certain degree of softness so that the support ribs can be compressed or bent.

[0097] S102: Prepare the support bar 132. The support bar 132 is formed by extrusion using an extruder. It can be understood that the material of the support bar 132 can be a transparent material or a translucent material. This solution makes it easy to observe the support situation of the support bar 132 by setting the support bar 132 to a transparent material, that is, when the support bar 132 is broken due to collisions, etc., the relevant personnel can promptly discover this abnormal situation and take measures to ensure the personal safety of the patient. It should be noted that when the support bar 132 is bent or compressed under natural conditions and with the minimum radius, it should maintain its intact appearance without obvious collapse and concave. Specifically, the material of the support bar 132 can be TPE, POE, PP, TPU or PA12, etc. It depends on the actual situation.

[0098] S103: spirally winding the strip belt 130 around the outer periphery of the forming shaft 430 to form the air guide tube 100. Specifically, the forming shaft 430 can drive the strip belt 130 to rotate so that the strip belt 130 is wound around its outer periphery. It should be noted that the forming shaft 430 can be connected to an external power source to provide power for the conveying and winding of the strip belt 130 and the rotation of the forming shaft 430. Power sources can be set for the strip belt 130 and the forming shaft 430 respectively, or the strip belt 130 and the forming shaft 430 can share a power source. It depends on the actual situation.

[0099] The strip 130 can be stacked and overlapped on the forming shaft 430 at a set pitch to form the air duct 100. Specifically, along the spiral winding direction of the strip body 131, the outer overlapping portion 1312 of each circle of the wound strip body 131 is stacked on the inner overlapping portion 1311 of the previous circle of the wound strip body 131, thereby forming a spiral strip body 131 structure with each circle stacked, that is, forming the air duct 100.

[0100] S104: spirally wind the support strip 132 around the outer periphery of the air duct 100 to form the first support rib 200a and the second support rib 200b. Specifically, the forming shaft 430 can drive the support strip 132 to rotate so that the support strip 132 is wound around the outer periphery of the air duct 100 to form the first support rib 200a and the second support rib 200b. The structures of the first support rib 200a and the second support rib 200b can be the same or different. Some embodiments of the present application are described by taking the different structures of the first support rib 200a and the second support rib 200b as an example.

[0101] It should be noted that in some embodiments, the air duct 100 may be formed first, that is, the strip 130 may be wound first, and then the first support rib 200a and the second support rib 200b may be formed, that is, the support strip 132 may be wound around the air duct 100, thereby forming the breathing tube 10. In other embodiments, the strip 130 and the support strip 132 may be prepared at the same time, and the support strip 132 may be wound around the air duct 100 while the strip 130 is wound around the forming shaft 430. Some embodiments of the present application take the latter as an example, that is, the air duct 100, the first support rib 200a and the second support rib 200b are formed at the same time, and this method can ensure the processing efficiency of the breathing tube 10.

[0102] In some embodiments, the steps of preparing the strip 130 include:

[0103] The strip 130 is formed by extrusion molding using the first extrusion unit 410. First, the raw materials of the strip 130 can be pre-processed, including processes such as drying, drying and mixing of granular raw materials, to ensure the quality of the raw materials and the processing effect. Secondly, the pre-processed raw materials are placed in the first extrusion unit 410 for melting. The first extrusion unit 410 gradually melts the raw materials into a molten plastic paste through heating, stirring and pressure. Finally, the molten plastic paste is extruded from the die head of the first extrusion unit 410 to form a desired cross-sectional shape.

[0104] The second extrusion unit 420 is used to form the support strip 132 by extrusion molding. The extrusion preparation process of the support strip 132 is similar to that of the strip 130, and will not be repeated here. It can be understood that the second extrusion unit 420 can be the same as the first extrusion unit 410.

[0105] In some embodiments, the steps of spirally winding the strip 130 around the outer circumference of the forming shaft 430 to form the airway 100 include:

[0106] The first extrusion unit 410 is disposed beside the molding shaft 430. Specifically, the first extrusion unit 410 may be located on the upper side of the molding shaft 430 along the circumferential direction. The specific arrangement may be determined according to actual conditions.

[0107] During the process of the first extrusion unit 410 forming the strip band 130, the formed strip band 130 is wound around the outer periphery of the forming shaft 430, that is, the air duct 100 can be formed while the strip band 130 is being formed. The strip band 130 just extruded has strong plasticity, which is conducive to winding and forming the air duct 100, that is, it can effectively improve the processing efficiency of the air duct 100 and ensure the processing quality of the air duct 100.

[0108] In some embodiments, the steps of spirally winding the support strip 132 around the outer periphery of the airway tube 100 to form the first support rib 200a and the second support rib 200b include:

[0109] The second extrusion unit 420 is arranged beside the molding shaft 430. It can be understood that the second extrusion unit 420 can be arranged at a distance from the first extrusion unit 410, and the second extrusion unit 420 can be arranged at a portion other than the end of the molding shaft 430. In the process of the second extrusion unit 420 molding the support bar 132, the molded support bar 132 is wrapped around the outer periphery of the molded air guide tube 100, that is, the first support rib 200a and the second support rib 200b can be molded at the same time as the support bar 132 is molded. The support bar 132 that has just been extruded has strong plasticity, which is conducive to winding the molded support ribs, that is, it can effectively improve the processing efficiency of the first support rib 200a and the second support rib 200b and ensure the processing quality.

[0110] In some embodiments, the step of spirally winding the strip 130 around the outer circumference of the forming shaft 430 to form the airway 100 further includes:

[0111] A plurality of spring flexible shafts are arranged along the circumference of the forming shaft 430, and the specific number of the spring flexible shafts can be determined according to the actual situation. The strip belt 130 is spirally wound around each spring flexible shaft, and a driving device is used to drive each spring flexible shaft to move axially along the forming shaft 430 and rotate circumferentially along the forming shaft 430, thereby driving the strip belt 130 to move in a spiral manner, so that the strip belt 130 is spirally wound around the outer periphery of the forming shaft 430. In this solution, by setting a driving device, it is convenient to set air guide tubes 100 of different specifications and sizes according to actual needs, and the molding quality of the air guide tube 100 can be guaranteed.

[0112] In some embodiments, the above-mentioned method of driving each spring flexible shaft to move to drive the strip belt 130 can be specifically expressed as: driving each spring flexible shaft to make a spiral motion along the axial direction of the forming shaft 430, and at the same time, the strip belt 130 is extruded and molded as a whole, and in the process of molding the strip belt 130, the molded strip belt 130 is simultaneously wound around the outer periphery of the forming shaft 430 and covered on the spring flexible shaft. The above-mentioned action can make the strip belt 130 covering the spring flexible shaft move in the opposite direction as the spring flexible shaft spirally moves, so that the strip belt 130 can be automatically spirally wound by the spring flexible shaft, thereby improving the manufacturing efficiency. After the strip belt 130 is wound, the spring flexible shaft can be cut off and pulled out. In some embodiments, while driving each spring flexible shaft, the support strip 132 can also be extruded and molded as a whole, so that the movement of the spring flexible shaft can simultaneously drive the strip belt 130 and the support strip 132 to spirally wind, further improving the manufacturing efficiency. In addition, in order to make it easier for the spring shaft to perform spiral motion along the axial direction of the forming shaft 430, a spiral groove can be provided along the axial surface of the forming shaft 430 so that the spring shaft can extend into the spiral groove and move along its extension direction.

[0113] In some embodiments, the steps of preparing the support bar 132 include:

[0114] Prepare two support bars 132. It is understandable that the second extrusion unit 420 can be used to extrude two support bars 132 at the same time, or the second extrusion unit 420 can be used to extrude one of the support bars 132, and an additional extrusion unit can be used to extrude the other support bar 132. Some embodiments of the present application are described using the former (using the second extrusion unit 420 to extrude two support bars 132 at the same time) as an example.

[0115] In some embodiments, the step of spirally winding the support strip 132 around the outer periphery of the airway tube 100 includes:

[0116] The two support bars 132 are spirally wound around the outer circumference of the air duct 100 to form a double spiral structure to form a first support rib 200a and a second support rib 200b. By forming the first support rib 200a and the second support rib 200b, this solution can further improve the stability of the support of the air duct 100, prevent the air duct 100 from being bent significantly, and enhance the thermal insulation performance of the air duct 100.

[0117] Reference Fig.12 The following is a specific embodiment of a method for processing the breathing tube 10:

[0118] S201: multiple spring flexible shafts are arranged along the circumference of the forming shaft 430, and the specific number of the spring flexible shafts can be determined according to the actual situation. The strip belt 130 is spirally wound around each spring flexible shaft, and a driving device is used to drive each spring flexible shaft to move axially along the forming shaft 430 and rotate circumferentially along the forming shaft 430, thereby driving the strip belt 130 to move in a spiral manner, so that the strip belt 130 is spirally wound around the outer circumference of the forming shaft 430.

[0119] S202: The first extrusion unit 410 is arranged beside the molding shaft 430. When the first extrusion unit 410 is forming the support bar 132, the formed support bar 132 is wound around the outer periphery of the formed air guide tube 100.

[0120] S203: Use the first extrusion unit 410 to form the strip band 130 through an extrusion molding process.

[0121] S204: a second extrusion unit 420 is disposed beside the molding shaft 430 , and in the process of the second extrusion unit 420 molding the support bar 132 , the molded support bar 132 is wound around the outer periphery of the molded air guide tube 100 .

[0122] S205: spirally wrap the two support bars 132 around the outer circumference of the air duct 100 to form a double helix structure, so as to form a first support rib 200a and a second support rib 200b.

[0123] 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.

[0124] 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.

[0125] 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: Airway tube, used to conduct gas; A first support rib connected to the outer peripheral wall of the air guide tube, wherein the first support rib spirally surrounds the outside of the air guide tube with the axis of the air guide tube as the central axis; as well as A second support rib connected to the outer peripheral wall of the air guide tube, wherein the second support rib spirally surrounds the outside of the air guide tube with the axis of the air guide tube as the central axis; Wherein, the first supporting rib and the second supporting rib are both hollow, and the first supporting rib and the second supporting rib form a double helix structure.

2. The breathing tube according to claim 1, characterized in that The first supporting rib is integrally arranged with the air guide tube; and / or, The second supporting rib is integrally arranged with the air guide tube.

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

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

5. The breathing tube according to claim 4, characterized in that The strip belt comprises a belt body and a support strip, wherein the support strip is connected to one side of the belt body and defines an inner cavity extending along the length direction of the strip belt together with the belt body; The support bars are spirally arranged to form the first support ribs.

6. The breathing tube according to claim 5, characterized in that The strip belt further comprises a protrusion, the protrusion is connected to the belt body and is located on the same side as the support strip, the protrusion extends along the length direction of the belt body and is spaced apart from the support strip along the width direction of the belt body; The protrusion is spirally arranged to form a limiting protrusion, and the first supporting rib is located between the limiting protrusion and the second supporting rib.

7. The breathing tube according to claim 5, characterized in that The strip belt further comprises two protrusions, the two protrusions are connected to the belt body and are located on the same side as the support strip, the two protrusions extend along the length direction of the belt body and are spaced apart from each other along the width direction of the belt body; The two protrusions are spirally arranged to form two limiting protrusions, and the first supporting rib is located between the two limiting protrusions.

8. 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 and a support strip, wherein the support strip is connected to one side of the belt body and defines an inner cavity extending along the length direction of the strip belt together with the belt body; The support bars are spirally arranged to form the second support ribs.

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

10. A medical device, characterized in that: A breathing tube comprising any one of claims 1-9.

Images