CN111110965A

CN111110965A - Heatable respiratory tube and breathing machine

Info

Publication number: CN111110965A
Application number: CN201811285501.3A
Authority: CN
Inventors: 夏聪
Original assignee: Shenzhen City Daya Medical Technology Co ltd
Current assignee: Shenzhen City Daya Medical Technology Co ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2020-05-08

Abstract

The invention discloses a heatable breathing tube and a respirator, wherein the heatable breathing tube comprises: the heating wire is wound on the outer wall of the pipe body and is used for heating the airflow in the airflow channel; the first pipe head and the second pipe head are respectively connected with two ends of the pipe body; wherein, first tube head and/or second tube head are connected through mechanical fixed mode with the shaft. Through the mode, the production process of the heatable breathing tube can be simplified, the production cost is reduced, and the stability of the product quality is ensured.

Description

Heatable respiratory tube and breathing machine

Technical Field

The invention relates to the technical field of medical instruments, in particular to a heatable breathing tube and a breathing machine.

Background

The breathing machine is a common medical appliance, and is generally provided with a humidifier and a heatable breathing tube for obtaining better user experience so as to avoid water accumulation in the breathing tube caused by condensation of humidified gas in the breathing tube and even the problem of water choking of a patient.

In order to ensure a better using effect, the existing heatable breathing tube adopts a secondary injection molding mode to fix the tube head and the tube body, and then secondary injection molding is carried out again to encapsulate electronic elements such as a plug, a temperature sensor and the like to form a shell of the tube head. The secondary injection mold is high in cost, so that the heatable breathing tube is high in price and not beneficial to popularization and application.

In the long-term research and development process, the inventor of the application finds that the existing heatable breathing tube is complex in production process and high in cost.

Disclosure of Invention

The invention mainly solves the technical problem of providing a heatable breathing tube and a breathing machine, which can simplify the production process of the heatable breathing tube, reduce the production cost and ensure the reliability of the product quality.

In order to solve the technical problems, the invention adopts a technical scheme that: a heatable breathing tube is provided. The heatable breathing tube comprises a tube body, a first tube head and a second tube head. The pipe body comprises a pipe body and a heating wire, wherein the pipe body is used for defining an airflow channel, and the heating wire is wound on the outer wall of the pipe body and is used for heating airflow in the airflow channel. The first pipe head and the second pipe head are respectively connected with the two ends of the pipe body. The first pipe head and/or the second pipe head are/is connected with the pipe body in a mechanical fixing mode.

In order to solve the technical problem, the invention adopts another technical scheme that: a ventilator is provided. The breathing machine comprises a user mask, a humidifier and the heatable breathing tube, wherein the heatable breathing tube is respectively connected with the user mask and the humidifier.

The invention has the beneficial effects that: different from the situation of the prior art, the heating wire is wound on the outer wall of the tube body, and the first tube head and/or the second tube head are/is connected with the tube body in a mechanical fixing mode, so that the production process of the heatable breathing tube can be simplified, and the cost of the heatable breathing tube can be reduced, popularized and applied conveniently.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a schematic diagram of a heatable breathing tube according to one embodiment of the present invention;

FIG. 2 is an exploded view of one embodiment of a heatable breathing tube of the present invention;

FIG. 3 is a schematic view of a heatable breathing tube of the present invention in an assembled state;

FIG. 4 is a schematic diagram illustrating the structure of an embodiment of the first ferrule of the present invention;

FIG. 5 is a schematic structural view of an embodiment of an inner housing of a first ferrule of the present invention;

FIG. 6 is a schematic diagram illustrating the structure of an embodiment of a second ferrule of the present invention;

FIG. 7 is an enlarged partial view of the tube body of the present invention;

FIG. 8 is a cross-sectional view of an embodiment of the armature of the present invention;

fig. 9 is a schematic structural diagram of an embodiment of a ventilator according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a heatable breathing tube of the present invention, where the heatable breathing tube 1 includes: a body 110, a first cartridge 120 and a second cartridge 130. The pipe body 110 comprises a pipe body 111 and a heating wire 112, wherein the pipe body 111 is used for defining an airflow channel, and the heating wire 112 is wound on the outer wall of the pipe body 111 and is used for heating the airflow in the airflow channel; the first pipe head 120 and the second pipe head 130 are respectively connected with two ends of the pipe body 110; wherein the first tube head 120 and/or the second tube head 120 are connected with the tube body in a mechanically fixed manner.

In this embodiment, the heating wire 112 is wound around the outer wall of the tube body 111, and the first tube head 120 and/or the second tube head 130 are connected to the tube body 110 in a mechanically fixed manner, so that the production process of the heatable breathing tube can be simplified, and the cost reduction and popularization and application of the heatable breathing tube are facilitated.

In the present embodiment, the mechanical fixing method includes one or more of a combination of engagement fixing, adhesion connection, screw fixing, and caulking fixing. At least one end of the first tube head 120 and the second tube head 130 is mechanically fixed to the tube body 110, and when only one end of the first tube head is mechanically fixed to the tube body 110, the other end of the first tube head is connected to the tube body 110 by injection molding. In addition, the tube body 111 is made of flexible material, so that the tube body can adapt to the use environment through certain deformation such as bending, and the tube body 111 can be made of flexible plastic, such as polyethylene; in order to maintain a certain flexibility while having a sufficient mechanical strength, the wall thickness of the shaft body 111 is 0.2-0.5mm, e.g., 0.2mm, 0.3mm, or 0.5 mm. Further, the air flow passage formed in the body 111 is a cylindrical passage.

Further, referring to fig. 2 and 3, fig. 2 is an exploded view of an embodiment of a heatable breathing tube of the present invention, and fig. 3 is a schematic structural view of an assembled state of the heatable breathing tube of the present invention, wherein the first tube head 120 includes a first tube head inner shell 121 and a first tube head outer shell 122, the first tube head inner shell 121 is screwed with the first end of the tube body 110, and the first tube head outer shell 122 is sleeved on the first tube head inner shell 121 and the first end of the tube body 110 and is fixedly connected with the first tube head inner shell 121 through an adhesive. Further, referring to fig. 4 and 5, fig. 4 is a schematic structural view of a first embodiment of the first ferrule of the present invention, and fig. 5 is a schematic structural view of an embodiment of a first ferrule inner housing of the present invention, wherein the first ferrule inner housing 121 includes a first thread portion 1211 and an adhesive portion 1212 connected to the first thread portion 1211, a first external thread (not shown) is disposed on an outer side of the first thread portion 1211, a first internal thread 113 is disposed on an inner side of a first end of the tube body 110, and the first ferrule inner housing 121 is inserted into the first end of the tube body 110 and fixedly connected to the first end of the tube body 110 by the internal and external threads; the first cartridge inner case 121 is adhesively fixed to the first cartridge outer case 122 by an adhesive applied to the adhesive portion. Specifically, an adhesive is filled between the thread surface of the first internal thread 113 and the thread surface of the first external thread.

In this embodiment, the first pipe head 120 and the pipe body 110 are fixed in a rotating and meshing manner, and the adhesive is disposed on the thread surface of the first internal thread 113 and/or the thread surface of the first external thread, so that on one hand, the adhesive improves the connection strength between the first pipe head inner shell 121 and the pipe body 110, and simultaneously, the gap between the first internal thread 113 and the first external thread is filled with the adhesive, so that the joint between the first pipe head inner shell 121 and the pipe body 110 meets the requirement of air tightness. Therefore, in this embodiment, the connection between the first tube head inner shell 121 and the tube body 110 is simple, which is beneficial to improving the product yield, and can achieve better air tightness requirement, and the product quality is stable and reliable. In addition, the adhesive arranged on the thread surface of the first internal thread 113 and/or the thread surface of the first external thread needs to have good fluidity to fill the thread surface, and meanwhile, the adhesive needs to be dried quickly and has certain elasticity after drying, so that the heatable breathing tube 1 is not easy to crack in the process of moving or bending, and the adhesive is beneficial to improving the product quality and prolonging the service life. In one embodiment, the adhesive provided on the flanks of the first internal thread 113 and/or the flanks of the first external thread may be PE adhesive. And the adhesive coated on the bonding part may be PE adhesive in order to simplify the production process.

Optionally, a connection portion 1213 is further disposed between the first threaded portion 1211 and the bonding portion 1212, and a temperature sensor 140 is disposed on the connection portion to detect the temperature of the air flow in the air flow channel. In order to ensure the air tightness of the heatable breathing tube 1 and simplify the production process, the detection probe of the temperature sensor 140 is located in the sensor groove of the connecting portion 1213 on the outer wall of the tube body 110, the temperature sensor 140 detects the temperature of the sensor groove (not labeled) on the outer wall of the tube body 110, the temperature of the air flow inside the tube body 110 is determined through certain calculation, and the heating power is adjusted according to the obtained temperature of the air flow inside the tube body 110. Further, a digital display (not shown) is provided on the heatable breathing tube 1 to display the temperature of the airflow inside the tube body. Furthermore, temperature sensor 140 can be connected with intelligent terminal, implements the temperature of the inside air current of propelling movement pipe shaft 110 to send alarm information when the temperature of the inside air current of pipe shaft 110 is unusual, improve and use experience.

In one embodiment, please refer to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of a second tube head according to the present invention, wherein the second tube head 130 includes a second tube head inner shell 131 and a second tube head outer shell 132, the second tube head inner shell 131 is in threaded connection with the second end of the tube body 110, and the second tube head outer shell 132 is sleeved on the second tube head inner shell 131 and the second end of the tube body 110 and is fixedly connected with the second tube head inner shell 131 in a snap-fit manner.

Further, the second inner cartridge housing 131 includes a second screw part 1311 and a locking part 1312 connected to the second screw part 1311, a second external screw is provided on the outer side of the second screw part 1311, a second internal screw (not shown) is provided on the inner side of the second end of the pipe body 110, and the second inner cartridge housing 131 is inserted into the second end of the pipe body 110 and is fixedly connected to the second end of the pipe body 110 by the internal and external screws; the second pipe joint inner shell 131 is fixed to the second pipe joint outer shell 132 by a snap structure provided on the snap-fit portion 1312. Optionally, an adhesive is filled between the thread surface of the second internal thread and the thread surface of the second external thread.

In this embodiment, the second ferrule 130 and the barrel 110 are fixed by rotational engagement, and an adhesive is provided on the thread surface of the second internal thread and/or the thread surface of the second external thread, so that the adhesive improves the connection strength between the second ferrule inner housing 131 and the barrel 110, and the gap between the second internal thread and the second external thread is filled with the adhesive, so that the joint between the second ferrule inner housing and the barrel satisfies the requirement of airtightness. Therefore, in this embodiment, the connection between the second tube head inner shell 131 and the tube body 110 is simple, which is beneficial to improving the product yield, and can achieve better air tightness requirement, and the product quality is stable and reliable. In addition, the adhesive arranged on the thread surface of the second internal thread and/or the thread surface of the second external thread needs to have good fluidity to fill the thread surfaces, and meanwhile, the adhesive needs to be dried quickly and has certain elasticity after drying, so that the heatable breathing tube 1 is not easy to crack in the process of moving or bending, and the adhesive is favorable for improving the product quality and prolonging the service life.

The second cartridge inner shell 131 and the second cartridge outer shell 132 are fixed in a snap-fit manner, so that the relative position of the second cartridge inner shell 131 and the second cartridge outer shell 132 can be determined. Furthermore, a latch 1313 is disposed on the outer side of the engaging portion 1312, a locking groove 1314 is correspondingly disposed on the inner side of the second tube head outer shell 132, and the second tube head inner shell 131 and the second tube head outer shell 132 are fixed by the locking groove 1314 and the latch 1313.

In this embodiment, the number and shape of the latches 1313 may be set according to actual needs. In the present embodiment, the number of the latches 1313 is two, and the latches are symmetrically provided on the engaging portion 1312. Correspondingly, the number of the clamping grooves 1314 is two, the clamping grooves 1314 are U-shaped clamping grooves, and the second tube head inner shell 131 is gradually clamped in the process that the second tube head outer shell 132 moves towards the direction close to the second tube head inner shell 131. And still be equipped with installation face 1315 between two draw-in grooves 1314 on second tube head shell 132, installation face 1315 is the plane, and including the oval ring of concentric setting, because the surface of second tube head shell 132 is the disc, sets up installation face 1315 and makes things convenient for the user to exert oneself with second tube head shell 132 and second tube head inner shell 131 block to and be connected heatable breathing tube 1's second end and the humidifier of breathing machine, make heatable breathing tube 1's use more convenient.

Furthermore, a wiring groove 1316 is further arranged on the clamping part 1312, and the wiring groove 1316 is positioned on the outer surface of the second tube head inner shell 131 and is positioned between the two clamping blocks 1313. The ends of the heating wires 112 wound around the outer wall of the pipe body 111 are received in the wire grooves 1316 and connected to the plug 150. Further, the heating wire 112 is connected with the plug 150 by welding; furthermore, in order to obtain a better waterproof effect for the heatable breathing tube 1, a potting adhesive layer is disposed on the exposed electronic components and the heating wires 112.

Optionally, referring to fig. 7 and 8, fig. 7 is a partial enlarged view of the tube body of the present invention, and fig. 8 is a cross-sectional view of an embodiment of the frame of the present invention, wherein the tube body 110 further includes a frame 114, the frame 114 is spirally wound on the outer wall of the tube body 111, and the heating wire 112 is embedded on the frame 114 and attached to the outer wall of the tube body 111. In the present embodiment, the frame 114 is provided around the outer wall of the pipe body 111 to improve the strength of the pipe body 111. The distance between the frameworks 114 wound on the outer wall of the pipe body 111 can be designed according to requirements, and when the length of the pipe body 111 is larger, the winding distance is slightly smaller; when the length of the tube body 111 is smaller, the diffraction pitch is slightly larger; of course, the winding pitch may be the same or different on the same pipe body 111, as long as the strength of the pipe body 111 can be increased to a desired range. Meanwhile, in order to improve the temperature control accuracy and the heat transfer efficiency, the heating wire 112 embedded in the frame 114 is attached to the outer wall of the pipe body 11, so that the heating wire 112 transmits heat to the pipe body 111.

In the assembling process, the first cartridge outer shell 122 and the second cartridge outer shell 132 are firstly sleeved into the tube body 111, then the first cartridge inner shell 121 and the second cartridge inner shell 131 are respectively fixed with the tube body 111 in a threaded manner, and then an adhesive is injected into the thread surface of the first internal thread 113 and/or the thread surface of the first external thread, and the thread surface of the second internal thread and/or the thread surface of the second external thread through a dispenser. And welding the sensor on the heating wire close to one side of the first tube head in a welding mode so as to utilize the heating wire for power supply and signal transmission. Simultaneously connecting the heating wire 112 adjacent to one side of the second cartridge 130 with the plug 150; then, the heating wires 112 are arranged in the wiring slot 1316, and are encapsulated by the encapsulation glue. Finally, the first cartridge inner case 121 and the first cartridge outer case 122 are fixedly connected by adhesion, and the second cartridge inner case 131 and the second cartridge outer case 132 are fixedly connected by engagement. In this embodiment, considering the reasons of structural design and mold opening, the minimum size of the first and second tip

outer shells

122 and 132 is smaller than the size of the corresponding first and second tip

inner shells

121 and 131, so as to limit the corresponding outer shells by the inner shells, and therefore, when installing the heating breathing pipeline, the first and second tip

outer shells

122 and 132 need to be sleeved into the pipe body 110 first, and then other installation steps need to be performed. However, different structural designs and mold opening methods may lead to different installation sequences, and the corresponding assembly sequence can be adjusted according to the characteristics of different structures in the heatable breathing tube 1.

Further, in use, the first tube head 110 is connected to a breathing mask of a user, and the second tube head 120 is connected to a ventilator body, in particular to a humidifier of a ventilator.

In order to solve the technical problem, the invention adopts another technical scheme that: a ventilator is provided.

Referring to fig. 9, fig. 9 is a schematic structural diagram of an embodiment of a ventilator according to the present invention, wherein the ventilator 10 includes:

the user mask 200, the humidifier 300 and any heatable breathing tube 100, the heatable breathing tube 100 is respectively connected with the user mask 200 and the humidifier 300. Specifically, the heatable breathing tube 100 comprises a tube body, a first tube head and a second tube head, the heatable breathing tube 100 is connected with the user mask 200 through the first tube head, and the heatable breathing tube 100 is connected with the humidifier 300 through the second tube head.

In this embodiment, water vapor generated by the humidifier 300 is heated to a suitable temperature in the heatable breathing tube 100 and enters the user through the user mask 200. The proper temperature is usually close to the body temperature of a person, and optionally, the proper temperature can be automatically adjusted according to the difference of the environmental temperature and the physical condition of a user so as to obtain a better use effect. Further, the breathing mask 200 contacts the nose and mouth of the user, so that chemical stability and biological safety need to be ensured, and convenience and durability are also needed, and in one embodiment, the breathing mask 200 is made of polypropylene, polyethylene, silica gel or the like.

Furthermore, the ventilator 10 may be any ventilator that uses a heatable breathing tube 100, such as a medical large ventilator or the like. In one embodiment, the ventilator 10 is a home ventilator.

In summary, the present invention discloses a heatable breathing tube and a breathing machine, wherein the heatable breathing tube comprises: the heating wire is wound on the outer wall of the pipe body and is used for heating the airflow in the airflow channel; the first pipe head and the second pipe head are respectively connected with two ends of the pipe body; wherein, first tube head and/or second tube head are connected through mechanical fixed mode with the shaft. Through the mode, the production process of the heatable breathing tube can be simplified, the production cost is reduced, and the reliable product quality is ensured.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A heatable breathing tube, the heatable breathing tube comprising:

the heating wire is wound on the outer wall of the pipe body and is used for heating the airflow in the airflow channel;

the first pipe head and the second pipe head are respectively connected with two ends of the pipe body;

the first pipe head and/or the second pipe head are/is connected with the pipe body in a mechanical fixing mode.

2. The breathing tube of claim 1, wherein the first tube head comprises a first tube head inner shell and a first tube head outer shell, the first tube head inner shell is in threaded connection with the first end of the tube body, the first tube head outer shell is sleeved on the first tube head inner shell and the first end of the tube body, and is fixedly connected with the first tube head inner shell through a bonding agent.

3. The breathing tube according to claim 2, wherein the first tube head inner shell comprises a first threaded portion and an adhesive portion connected with the first threaded portion, a first external thread is provided on an outer side of the first threaded portion, a first internal thread is provided on an inner side of the first end of the tube body, and the first tube head inner shell is inserted into the first end of the tube body and fixedly connected with the first end of the tube body by the internal and external threads; the first tube head inner shell is fixedly adhered to the first tube head outer shell through an adhesive coated on the adhesive part.

4. The breathing tube of claim 3 wherein the lands of the first internal threads and the lands of the first external threads are filled with an adhesive.

5. A breathing tube according to claim 3, wherein a connection portion is further provided between the first threaded portion and the bonding portion, and a temperature sensor is provided on the connection portion to detect the temperature of the air flow in the air flow passage.

6. The breathing tube of claim 1, wherein the second tube head comprises a second tube head inner shell and a second tube head outer shell, the second tube head inner shell is in threaded connection with the second end of the tube body, the second tube head outer shell is sleeved on the second tube head inner shell and the second end of the tube body, and is fixedly connected with the second tube head inner shell in a clamping manner.

7. The breathing tube according to claim 6, wherein the second tube head inner shell comprises a second threaded portion and a clamping portion connected with the second threaded portion, a second external thread is arranged on the outer side of the second threaded portion, a second internal thread is arranged on the inner side of the second end of the tube body, and the second tube head inner shell is inserted into the second end of the tube body and fixedly connected with the second end of the tube body through the internal thread and the external thread; the second tube head inner shell is clamped and fixed with the second tube head outer shell through a clamping structure arranged on the clamping part.

8. The breathing tube of claim 7, wherein a clamping block is disposed on an outer side of the clamping portion, a clamping groove is correspondingly disposed on an inner side of the second tube head outer shell, and the second tube head inner shell and the second tube head outer shell are fixed through matching clamping between the clamping groove and the clamping block.

9. The breathing tube of claim 7 wherein the second internal thread and the second external thread have adhesive filled between thread faces.

10. The breathing tube of claim 7, wherein the engaging portion further comprises a wire slot, and the distal end of the heating wire is received in the wire slot and connected to the plug.

11. The breathing tube of claim 1, wherein the tube body further comprises a frame, the frame is spirally wound on the outer wall of the tube body, and the heating wire is embedded on the frame and attached to the outer wall of the tube body.

12. A respirator comprising a user mask, a humidifier and a heatable breathing tube according to any one of claims 1 to 11 connected to the user mask and the humidifier respectively.