Breathing tube

Abstract

The utility model relates to a breathing tube. Comprising a pipe body, the pipe body comprises a body part, a spiral part and a protruding part, the spiral part is arranged on the peripheral face of the outer side of the body part in a threaded mode, the protruding part is located between two adjacent threads of the spiral part, and the protruding part is arranged in a protruding mode relative to the peripheral face of the outer side of the body part; the connecting piece is connected with the end part of the pipe body in an injection molding manner; and the mounting assembly is connected with the connecting piece. According to the connecting piece, the protruding part is arranged between every two adjacent threads, the protruding parts and the mold generate abutting pressure to be tightly attached to each other, therefore, a good sealing effect is achieved on the cavity of the mold, the situation that injection molding liquid leaks out of the mold to affect the forming effect of the connecting piece is avoided, and therefore the manufacturing quality of the connecting piece and the whole breathing tube is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a breathing tube. Background Art

[0002] The breathing tube can be used in a ventilator, which can supply oxygen to the patient through the breathing tube, thereby achieving rescue or treatment of the patient. However, for traditional breathing tubes, during the injection molding process of the breathing tube, there will be leakage of injection liquid, which will affect the manufacturing quality of the breathing tube. Summary of the invention

[0003] A technical problem solved by the present application is how to improve the manufacturing quality of the breathing tube.

[0004] A breathing tube, comprising:

[0005] A tube body, the tube body comprising a main body, a spiral portion and a convex portion, the spiral portion being arranged on the outer peripheral surface of the main body in a threaded shape, the convex portion being located between two adjacent screw teeth of the spiral portion, and the convex portion being arranged to protrude relative to the outer peripheral surface of the main body;

[0006] A connector, the connector being connected to the end of the tube body by injection molding; and

[0007] An installation component is connected to the connecting piece.

[0008] In one embodiment, a protruding height of the protruding portion relative to an outer peripheral surface of the main body portion is a protruding height of the screw thread relative to an outer peripheral surface of the main body portion.

[0009] In one embodiment, the protrusion is elastic.

[0010] In one of the embodiments, an edge of the protrusion in the axial direction of the main body is in contact with the thread.

[0011] In one of the embodiments, along the radial direction of the main body portion from the central axis of the main body portion to the protrusion, the size of the protrusion in the axial direction of the main body portion decreases.

[0012] In one embodiment, the protrusion has a first surface and a second surface, one end of the first surface and the second surface are respectively connected to different positions of the main body, and the other ends of the first surface and the second surface are connected to each other.

[0013] In one embodiment, the connecting member covers the screw thread and the protrusion.

[0014] In one embodiment, the installation assembly includes a joint and a sleeve, the sleeve is sleeved on the connecting member, and the sleeve is threadedly connected to the connecting member, the joint is sleeved on the sleeve, and the joint is connected to the sleeve by injection molding.

[0015] In one embodiment, the sleeve member includes a sleeve portion and a limiting portion, the sleeve portion is sleeved on the connecting member, the limiting portion is arranged on the outer surface of the sleeve portion along a radial protrusion of the sleeve portion, the radial projection of the limiting portion on the sleeve portion falls on the main body portion and is spaced apart from the connecting member, the joint is sleeved on the sleeve portion, and one end of the joint is abutted against the limiting portion along the axial direction of the main body portion.

[0016] In one of the embodiments, the sleeve portion further includes a boss, which is arranged on the sleeve portion and protrudes radially along the sleeve portion. A groove is formed on the connecting member, and the boss cooperates with the groove.

[0017] A technical effect of an embodiment of the present application is: by arranging a protrusion between two adjacent screw threads, the protrusion and the mold generate a resistance pressure and are tightly attached to each other, thereby having a good sealing effect on the mold cavity, preventing the injection liquid from leaking out of the mold and affecting the molding effect of the connector, thereby improving the manufacturing quality of the connector and the entire breathing tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG. 1 is a schematic diagram of the three-dimensional structure of a breathing tube provided in an embodiment.

[0019] FIG. 2 is a schematic diagram of the exploded structure of the breathing tube shown in FIG. 1 .

[0020] FIG. 3 is a schematic plan cross-sectional view of the breathing tube shown in FIG. 1 .

[0021] Figure numerals: breathing tube 10: tube body 100, main body 110, spiral portion 120, screw thread 121, protrusion 130, first surface 131, second surface 132, connecting piece 200, groove 210, installation assembly 300, joint 310, sleeve part 320, sleeve portion 321, limit portion 322, boss 323. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0023] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0024] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0026] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0028] Referring to Fig. 1, Fig. 2 and Fig. 3, a breathing tube 10 provided in one embodiment of the present application is applied to a ventilator, and the breathing tube 10 includes a tube body 100, a connector 200 and a mounting assembly 300, wherein the connector 200 is arranged on the tube body 100, and the mounting assembly 300 is arranged on the connector 200. The mounting assembly 300 can be used to install external pipes or parts. The tube body 100 can be a cylindrical tubular structure, and the number of the connectors 200 can be two, wherein one connector 200 is arranged at one end of the tube body 100, and the other connector 200 is arranged at the other end of the tube body 100, that is, the two connectors 200 are respectively arranged at opposite ends of the tube body 100. The number of the mounting assembly 300 can be two, so that the mounting assembly 300 and the connector 200 form a one-to-one correspondence, that is, one mounting assembly 300 is arranged on one connector 200, and the other mounting assembly 300 is arranged on the other connector 200.

[0029] Referring to FIG. 1 , FIG. 2 and FIG. 3 , in some embodiments, the tube body 100 includes a main body 110, a spiral portion 120 and a protrusion 130. The spiral portion 120 is arranged on the outer peripheral surface of the main body 110 in a threaded shape. Since the spiral portion 120 is arranged on the main body 110, the tube body 100 is substantially a threaded tube. The protrusion 130 is arranged on the outer peripheral surface of the main body 110 in a radial direction of the main body 110, and the protrusion 130 is located between two adjacent screw teeth 121 of the spiral portion 120. The protrusion height of the protrusion 130 relative to the outer peripheral surface of the main body 110 can be less than the protrusion height of the screw teeth 121 relative to the outer peripheral surface of the main body 110, so that the protrusion 130 can be completely accommodated in the space formed by the two adjacent screw teeth 121, and the protrusion 130 will not be arranged protruding relative to the screw teeth 121. The protrusion 130 may be made of an elastic material, so that the protrusion 130 has a certain elasticity and can generate elastic deformation.

[0030] Referring to Fig. 1, Fig. 2 and Fig. 3, the connector 200 can be connected to the tube body 100 by injection molding, and the connector 200 can cover the protrusion 130 and the screw thread 121. The connector 200 can cover at least one protrusion 130 and the screw thread 121. For example, the connector 200 can cover one protrusion 130 and one screw thread 121, and another example is that the connector 200 can cover one protrusion 130 and two screw threads 121, and another example is that the connector 200 can cover two protrusions 130 and two screw threads 121. In the manufacturing process, the tube body 100 can be formed by injection molding first. Then, the end of the tube body 100 is placed in the mold cavity of the mold, so that the connector 200 is connected to the tube body 100 by secondary injection molding. During the molding process of the connector 200, due to the presence of the protrusions 130 between the screw threads 121, the protrusions 130 will generate a counter pressure with the injection mold and closely adhere to each other, thereby having a good sealing effect on the mold cavity, preventing the injection liquid from leaking out of the mold and affecting the molding effect of the connector 200, thereby improving the manufacturing quality of the connector 200 and the entire breathing tube 10. Since the protrusions 130 have a certain elasticity, the sealing effect of the protrusions 130 on the mold cavity can be further improved, thereby further improving the manufacturing quality of the breathing tube 10.

[0031] Referring to Fig. 1, Fig. 2 and Fig. 3, in some embodiments, the two edges of the protrusion 130 in the axial direction of the body 110 can be connected to the screw thread 121, that is, along the axial direction of the body 110, the distance between the protrusion 130 and the screw thread 121 is zero, so that a mutual contact relationship is formed. In the radial direction of the body 110 from the central axis of the body 110 to the direction of the protrusion 130, the dimension H of the protrusion 130 in the axial direction of the body 110 decreases, which can be generally understood as the width of the protrusion 130 decreases in the direction away from the central axis of the body 110. The protrusion 130 may have a first surface 131 and a second surface 132, one end of the first surface 131 is connected to one position of the body 110, and one end of the second surface 132 is connected to another position of the body 110, for example, one end of the first surface 131 is connected to one of the screw teeth 121, and one end of the second surface 132 is connected to an adjacent screw tooth 121, so that one end of the first surface 131 and the second surface 132 are respectively connected to two different positions on the body 110. The other ends of the first surface 131 and the second surface 132 are connected to each other, so that the cross-sectional shape of the protrusion 130 is approximately triangular. Through the above arrangement, the sealing effect of the protrusion 130 on the mold cavity can be further improved, thereby further improving the manufacturing quality of the breathing tube 10. The dimension H of the protrusion 130 in the axial direction of the body 110 can also be understood as the spacing between the first surface 131 and the second surface 132 along the axial direction of the body 110.

[0032] In other embodiments, the two edges of the protrusion 130 in the axial direction of the body 110 may be spaced apart from the screw thread 121, that is, there is a certain distance between the protrusion and the screw thread 121. In the radial direction of the body 110 from the central axis of the body 110 to the protrusion 130, the size of the protrusion 130 in the axial direction of the body 110 may remain unchanged, which can be generally understood as the width of the protrusion 130 remains unchanged in the direction away from the central axis of the body 110, so that the cross-sectional shape of the protrusion 130 is roughly rectangular. Of course, in the case where the size of the protrusion 130 in the axial direction of the body 110 is reduced in the radial direction of the body 110 from the central axis of the body 110 to the protrusion 130, the cross-sectional shape of the protrusion 130 can be roughly trapezoidal.

[0033] Referring to FIG. 2 and FIG. 3, in some embodiments, the mounting assembly 300 includes a joint 310 and a sleeve 320, the sleeve 320 is sleeved on the connector 200, and the sleeve 320 can be connected to the connector 200 by a threaded connection, for example, the sleeve 320 is provided with an internal thread, and the connector 200 is provided with an external thread, and the threaded connection relationship between the sleeve 320 and the connector 200 can be achieved by the mutual engagement of the external thread and the internal thread. The joint 310 is sleeved on the sleeve 320, and the joint 310 is connected to the sleeve 320 by injection molding, that is, the joint 310 can be connected to the sleeve 320 by secondary injection molding. In the manufacturing process, the combination formed by the tube body 100, the connector 200 and the sleeve 320 can be matched with the cavity of the mold, and then the joint 310 is formed by injection molding, so that the joint 310 is connected to the sleeve 320 by secondary injection molding.

[0034] If the entire mounting assembly 300 is directly connected to the tube body 100 by injection molding, the injection liquid will flow out of the cavity and cause leakage. However, for the breathing tube 10 in the above embodiment, since the connector 200 has been connected to the end of the tube body 100 by injection molding, when the joint 310 is connected to the connector 200 by injection molding, the connector 200 can play a good sealing role, thereby effectively preventing the injection liquid from leaking from the cavity, and finally improving the manufacturing quality of the breathing tube 10.

[0035] Referring to FIG. 2 and FIG. 3 , in some embodiments, the sleeve member 320 includes a sleeve portion 321 and a limiting portion 322. The sleeve member 320 is sleeved on the connector 200, that is, the sleeve member 320 can be connected to the connector 200 in a threaded manner. The limiting portion 322 can be arranged at the end of the sleeve member 320, for example, the limiting portion 322 can be arranged on the outer surface of the sleeve portion 321 along the radial direction of the sleeve portion 321, so that the limiting portion 322 can be arranged perpendicular to the sleeve portion 321. The limiting portion 322 has an orthographic projection in the radial direction of the sleeve portion 321, and the orthographic projection can fall on the main body 110 of the tube body 100, and the orthographic projection is arranged at a distance from the connector 200. By setting the orthographic projection and the connector 200 at intervals, the spacing between the orthographic projection and the connector 200 can be reasonably set according to actual needs, so as to reasonably adjust the contact length between the joint 310 and the sleeve 320 along the axial direction of the tube body 100, thereby reasonably improving the connection strength between the joint 310 and the sleeve 320. The joint 310 is sleeved on the sleeve portion 321 by secondary injection molding, and one end of the joint 310 abuts against the limiting portion 322 along the axial direction of the main body 110. By setting the limiting portion 322, the installation of the joint 310 can be well positioned along the axial direction of the main body 110, thereby improving the assembly accuracy and efficiency of the joint 310.

[0036] Referring to Fig. 2 and Fig. 3, in some embodiments, the sleeve portion 321 may further include a boss 323, which is disposed at the end of the sleeve portion 321, that is, the boss 323 and the limiting portion 322 are respectively located at opposite ends of the sleeve portion 321. Obviously, it can be understood that the limiting portion 322 is located outside the inner cavity of the sleeve portion 321, and the boss 323 is located within the inner cavity of the limiting portion 322. For example, the boss 323 can be disposed on the inner surface of the sleeve portion 321 along the radial protrusion of the sleeve portion 321, so that the boss 323 can be disposed perpendicular to the sleeve portion 321. The connector 200 is provided with a groove 210, and the boss 323 can cooperate with the groove 210, so through the cooperation of the groove 210 and the boss 323, the assembly accuracy and efficiency between the entire sleeve 320 and the connector 200 can also be improved.

[0037] In summary, for the breathing tube 10 in the above embodiment, by providing the protrusion 130, the protrusion 130 and the mold generate a pressing force and are closely attached to each other, thereby playing a good sealing role on the mold cavity, preventing the injection liquid from leaking out of the mold and affecting the molding effect of the connector 200, thereby improving the manufacturing quality of the connector 200 and the entire breathing tube 10. At the same time, the connector 310 is also connected to the connector 200 by injection molding. During the molding process of the connector 310, the connector 200 can play a good sealing role on the mold cavity, thereby effectively preventing the injection liquid from leaking from the cavity, and finally further improving the manufacturing quality of the breathing tube 10.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A breathing tube, characterized in that: include: A tube body, the tube body comprising a main body, a spiral portion and a raised portion, the spiral portion being threaded and arranged on the outer peripheral surface of the main body, the raised portion being located between two adjacent screw teeth of the spiral portion, and the raised portion being arranged to protrude relative to the outer peripheral surface of the main body; A connector, the connector being connected to the end of the tube body by injection molding; and An installation component is connected to the connecting piece.

2. The breathing tube according to claim 1, characterized in that A protruding height of the protruding portion relative to the outer peripheral surface of the main body portion is smaller than a protruding height of the screw thread relative to the outer peripheral surface of the main body portion.

3. The breathing tube according to claim 1, characterized in that The protrusion is elastic.

4. The breathing tube according to claim 1, characterized in that An edge of the protrusion in the axial direction of the main body is in contact with the thread.

5. The breathing tube according to claim 1, characterized in that In a direction from the central axis of the main body portion to the protrusion along the radial direction of the main body portion, the size of the protrusion in the axial direction of the main body portion decreases.

6. The breathing tube according to claim 1, characterized in that The protrusion has a first surface and a second surface. One ends of the first surface and the second surface are respectively connected to different positions of the main body, and the other ends of the first surface and the second surface are connected to each other.

7. The breathing tube according to claim 1, characterized in that The connecting member covers the screw thread and the protruding portion.

8. The breathing tube according to claim 1, characterized in that The installation assembly includes a joint and a sleeve part, the sleeve part is sleeved on the connecting part, and the sleeve part is threadedly connected to the connecting part, the joint is sleeved on the sleeve part, and the joint is connected to the sleeve part by injection molding.

9. The breathing tube according to claim 8, characterized in that The sleeve member includes a sleeve portion and a limiting portion, the sleeve portion is sleeved on the connecting member, the limiting portion is radially protruding from the sleeve portion and is arranged on the outer surface of the sleeve portion, the radial projection of the limiting portion on the sleeve portion falls on the main body portion and is spaced apart from the connecting member, the joint is sleeved on the sleeve portion, and one end of the joint is abutted against the limiting portion along the axial direction of the main body portion.

10. The breathing tube according to claim 9, characterized in that The sleeve portion further comprises a boss, which is arranged on the sleeve portion in a radial direction of the sleeve portion and protrudes therefrom. A groove is formed on the connecting piece, and the boss cooperates with the groove.

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