A breathing tube and a ventilator

Abstract

The present invention discloses a breathing pipeline and a ventilator, comprising a ventilator, a trachea, and a heating pipe. One end of the trachea is communicated with the air outlet of the ventilator, and the other end is communicated with one end of the heating pipe through a set of connecting mechanisms. The other end of the heating pipe can be communicated with an external breathing mask. A plug is provided on the heating pipe, and a baffle is provided at the plug. The baffle is connected to the connecting mechanism. In the present invention, a connecting mechanism is provided at the connection between the trachea and the heating pipe, so that the two are not easily separated due to accidental touch. A baffle is provided at the plug of the heating pipe, and the baffle is linked with the connecting mechanism. When the trachea is connected to the heating pipe, the baffle moves to expose the plug for the heating pipe to be powered on. When the trachea is separated from the heating pipe, the baffle moves to block the plug, preventing dust or other dirt from entering the plug during storage, and also preventing liquid from entering the plug to contaminate the terminals of the plug when medical staff disinfect the heating pipe with disinfectant, providing effective protection for the plug.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a breathing tube and a ventilator. Background Art

[0002] When using a ventilator, gas enters the breathing mask through the trachea. However, in some usage scenarios with relatively low temperatures, the entry of low-temperature air into the user's body can cause discomfort to the user, and if the user has other diseases, it is more likely to cause health problems. To address this issue, it can be solved by connecting a heating tube to the trachea to heat the air. However, the heating tube and the trachea are usually fixed by a simple plug-in method, which is not stable enough and is prone to connection loosening due to accidental touch. At the same time, since the heating tube needs an external power supply, it is equipped with a plug. When the heating tube is not in use, the terminals in the plug are directly exposed. To ensure the safety of the ventilator during use, the heating tube often needs to be cleaned and disinfected, which causes sewage and disinfectant to easily enter the plug and contaminate the terminals, affecting the normal connection of the plug. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a breathing tube and a ventilator, the trachea can be connected to the heating tube to heat the air, a connecting mechanism for increasing the connection stability is provided between the trachea and the heating tube, and the connecting mechanism can be linked with a baffle to control the baffle to block or expose the plug, so as to provide protection for the plug.

[0004] To solve the above technical problem, a technical solution adopted by the present invention is: to provide a breathing tube and a ventilator, including a ventilator, a trachea, and a heating tube. One end of the trachea is communicated with the air outlet of the ventilator, and the other end is communicated with one end of the heating tube through a set of connecting mechanisms. The other end of the heating tube can be communicated with an external breathing mask. The heating tube has a plug that can be electrically connected to an external power supply. A baffle is provided at the plug, and the baffle is connected to the connecting mechanism. When the trachea is separated from the heating tube, the baffle blocks the plug to prevent dirt from entering the plug. When the trachea and the heating tube are fixedly connected together through the connecting mechanism, the baffle moves to expose the plug so that the plug can be electrically connected to an external power supply.

[0005] Further, the connecting mechanism includes a first insertion section provided at the end of the trachea and a second insertion section provided at the corresponding end of the heating tube. A slot for inserting the first insertion section is provided on the second insertion section. A fixing component is provided between the slot and the first insertion section. When the first insertion section is inserted to the bottom of the slot, the fixing component can fix the first insertion section in the slot. The plug and the baffle are located on the second insertion section.

[0006] Further, the cross-sections of the first insertion section, the second insertion section and the slot are all circular, and the slot is defined as an annular groove coaxially opened with the second insertion section and penetrates the second insertion section in a direction close to the first insertion section; the connecting mechanism further includes a collar coaxially arranged in the slot, one end of the collar located in the slot is rotatably connected to the bottom wall of the slot so that the collar can rotate around its own axis in the slot, the collar is connected to the baffle through a connecting rope to control the shielding of the plug, and a transmission member is arranged between the collar and the slot. When the first insertion section is inserted into the second insertion section, the collar can be driven to rotate through the transmission member.

[0007] Further, the transmission member includes a chute opened on the inner circumferential wall of the slot, a spiral groove opened on the inner circumferential wall of the collar, and a sliding rod arranged between the chute and the spiral groove;

[0008] The chute is axially opened along the slot, the sliding rod is arranged in the radial direction of the slot, one end of the sliding rod extends into the slot and is slidably connected to the slot, and the other end of the sliding rod extends into the spiral groove and is slidably connected to the spiral groove. When the first insertion section extends into the slot, the collar can be rotated by pushing the sliding rod.

[0009] Further, the plug includes an insulator and a plurality of terminals arranged on the insulator. An arc-shaped groove for installing the baffle is jointly opened between the second insertion section and the insulator. One end of the connecting rope away from the collar is fixedly connected to one end of the baffle extending into the arc-shaped groove, and an elastic member for driving the baffle to reset is arranged between one end of the baffle extending into the arc-shaped groove and the bottom wall of the arc-shaped groove.

[0010] Further, the fixing component includes a rotating member arranged on the first insertion section and a fixing block arranged at the bottom of the slot. The rotating member can rotate around the central axis of the first insertion section. An insertion block is arranged at one end of the rotating member close to the slot. A through hole is opened on the fixing block. Rotating the rotating member can insert the insertion block into the through hole to fix the first insertion section in the slot.

[0011] Further, the first insertion section is provided with an outer shell in a ring shape, and the end of the outer shell is connected to one end of the first insertion section close to the second insertion section. A ring groove for installing the rotating member is formed between the inner circumferential wall of the outer shell and the outer circumferential wall of the first insertion section. An axially arranged guiding groove is jointly opened between the first insertion section and one end of the outer shell close to the second insertion section. The width of the guiding groove matches that of the fixing block.

[0012] Further, the rotating member includes a first part located in the annular groove and a second part located outside the annular groove. A vertical groove matching the guiding groove is formed at the position of the first part corresponding to the guiding groove. A first transverse groove is formed along the circumferential direction of the first part on one transverse side of the vertical groove, so that a side wall of the first transverse groove close to the second insertion segment, a side wall of the first insertion segment close to the second insertion segment, and a side wall of the vertical groove close to the first transverse groove jointly enclose the insertion block. A second transverse groove is formed along the circumferential direction of the first part on the side of the vertical groove away from the first transverse groove, and the second transverse groove penetrates the first connecting segment in the direction close to the second connecting segment.

[0013] Further, the outer diameter of the second part is larger than that of the first part, and a plurality of anti-slip protrusions are provided on the outer periphery of the second part.

[0014] Further, a third transverse groove and a fourth transverse groove are formed along the circumferential direction of the first part at one end of the vertical groove away from the first transverse groove and the second transverse groove, and the third transverse groove and the fourth transverse groove are respectively located on the circumferential two sides of the vertical groove.

[0015] A breathing tube and a ventilator of the present invention have at least the following beneficial effects: A heating tube can be connected to the trachea to warm the air flowing through it, avoiding the stimulation of cold air to the patient's respiratory tract. In order to increase the connection stability between the trachea and the heating tube, a connection mechanism is provided at the connection between the trachea and the heating tube, so that the two are not easily separated due to accidental touch. A baffle is provided at the plug of the heating tube, and the baffle is linked with the connection mechanism. When the trachea is connected to the heating tube, the baffle moves to expose the plug for the heating tube to be powered on. When the trachea is separated from the heating tube, the baffle moves to block the plug, avoiding dust or other dirt from entering the plug during storage, and also avoiding liquid from entering the plug to contaminate the terminals of the plug when medical staff disinfect the heating tube with disinfectant, providing effective protection for the plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of the trachea, the heating tube and the connection mechanism in an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of the structures such as the heating tube, the second insertion segment and the plug in an embodiment of the present invention Figure 1 ;

[0020] Figure 4 Schematic diagram of structures such as the trachea, the first insertion section, and the limiting protrusion in an embodiment of the present invention;

[0021] Figure 5 Schematic diagram of structures such as the first branch, the second branch, and the anti-slip protrusion in an embodiment of the present invention;

[0022] Figure 6 Schematic diagram of structures such as the heating tube, the second insertion section, and the plug in an embodiment of the present invention Figure 2 ;

[0023] Figure 7 Cross-sectional schematic diagram of structures such as the heating tube, the second insertion section, and the ring sleeve in an embodiment of the present invention Figure 1 ;

[0024] Figure 8 Cross-sectional schematic diagram of structures such as the heating tube, the second insertion section, and the ring sleeve in an embodiment of the present invention Figure 2 ;

[0025] Figure 9 is Figure 6 Partial structural schematic diagram at A in

[0026] The meanings of the reference numerals in the drawings are as follows:

[0027] Ventilator 1, air outlet 11;

[0028] Trachea 2;

[0029] Heating tube 3, plug 31, insulator 311, terminal 312, socket 313, baffle 32, annular cavity 33, heating wire 34, arc groove 35, elastic member 36, connecting rope 37;

[0030] Connecting mechanism 4, first insertion section 41, housing 411, annular groove 412, second insertion section 42, slot 421, ring sleeve 422, sliding groove 423, rotating groove 424, sliding rod 425, fixing block 431, perforation 4311, first branch 432, vertical groove 4321, first horizontal groove 4322, insertion block 4323, second horizontal groove 4324, third horizontal groove 4325, fourth horizontal groove 4326, second branch 433, anti-slip protrusion 4331, limiting protrusion 44, guiding groove 45. Detailed implementation manners

[0031] The present invention will be further described below with reference to the drawings.

[0032] Please refer to Figure 1 , Figure 2 and Figure 3, A breathing tube and a ventilator according to the present invention include a ventilator 1, a trachea 2, and a heating tube 3. The ventilator 1 is provided with an air outlet 11. One end of the trachea 2 is sleeved on the air outlet 11 to communicate with the air outlet 11. The other end of the trachea 2 is connected to one end of the heating tube 3 through a set of connection mechanisms 4 to communicate with the inside of the heating tube 3. The other end of the heating tube 3 can be sleeved on the air inlet of an external breathing mask (not shown in the figure) to communicate with the inside of the breathing mask. The heating tube 3 has a plug 31 that can be electrically connected to an external power supply. A baffle 32 is provided at the plug 31, and the baffle 32 is connected to the connection mechanism 4. When the trachea 2 is separated from the heating tube 3, the baffle 32 blocks the plug 31 to prevent dirt from entering the plug 31. When the trachea 2 and the heating tube 3 are fixedly connected together through the connection mechanism 4, the baffle 32 moves to expose the plug 31 so that the plug 31 can be electrically connected to an external power supply.

[0033] Both the trachea 2 and the heating tube 3 are soft pipes. An annular cavity 33 is formed inside the wall of the heating tube 3, and a heating wire 34 for heating is wound in the annular cavity 33. The heating wire 34 is electrically connected to the plug 31.

[0034] Please refer to Figures 4 to 9, the connecting mechanism 4 includes a first insertion section 41 provided at one end of the air pipe 2 close to the heating pipe 3, a second insertion section 42 provided at one end of the heating pipe 3 close to the air pipe 2, and a fixing component provided between the first insertion section 41 and the second insertion section 42. The first insertion section 41 is a rigid hollow circular pipe coaxially arranged at the end of the air pipe 2, and the inner diameter of the first insertion section 41 matches and communicates with the inner diameter of the air pipe 2. An outer shell 411 is annularly provided at the end of the first insertion section 41 close to the second insertion section 42, and the length of the outer shell 411 is less than the length of the first insertion section 41. There is a radial distance between the inner peripheral wall of the outer shell 411 and the outer peripheral wall of the first insertion section 41, and one end of the outer shell 411 close to the second insertion section 42 is fixedly connected to the corresponding end of the first insertion section 41, that is, a ring groove 412 with an opening facing away from the second insertion section 42 is formed between the outer shell 411 and the first insertion section 41. The second insertion section 42 is a rigid hollow circular pipe coaxially arranged at the end of the heating pipe 3, and the inner diameter of the second insertion section 42 matches and communicates with the inner diameter of the heating pipe 3. A slot 421 is formed in the second insertion section 42. The slot 421 is defined as an annular groove coaxially formed in the second insertion section 42, and the slot 421 penetrates the second insertion section 42 in the direction close to the first insertion section 41. The diameter of the inner side wall (i.e., the inner ring wall of the slot 421) of the slot 421 matches the inner diameter of the first insertion section 41. The connecting mechanism 4 further includes a collar 422 provided in the slot 421. One end of the collar 422 located in the slot 421 is rotatably connected to the bottom wall of the slot 421, that is, the collar 422 can rotate around its own axis in the slot 421. The inner diameter of the collar 422 matches the outer diameter of the outer shell 411. A transmission member is further provided between the collar 422 and the slot 421. When the first insertion section 41 is inserted into the second insertion section 42, the collar 422 can be driven to rotate through the transmission member. One end of the collar 422 away from the first insertion section 41 is connected to the baffle 32 through a connecting rope 37.

[0035] The transmission members are provided in several groups evenly spaced in the circumferential direction of the sleeve 422. Each group of the transmission members includes a chute 423 formed on the inner wall of the slot 421, a spiral groove 424 formed on the inner wall of the sleeve 422, and a slide bar 425 disposed between the chute 423 and the spiral groove 424. The vertical groove 4321 is formed along the axial direction of the slot 421 and opens towards the sleeve 422. The spiral groove 424 is formed in a circumferential spiral shape along the inner wall of the sleeve 422 and opens towards the vertical groove 4321. The slide bar 425 is disposed in the radial direction of the sleeve 422. One end of the slide bar 425 extends into the vertical groove 4321 and is slidably connected to the vertical groove 4321, and the other end extends into the spiral groove 424 and is slidably connected to the spiral groove 424. When the first insertion section 41 extends into the slot 421, the sleeve 422 can be rotated by pushing the slide bar 425. A guide groove 45 is formed at a position corresponding to the slide bar 425 on the housing 411 and the first insertion section 41 near the second insertion section 42, and the width of the guide groove 45 matches the width of the slide bar 425. In the illustrated embodiment, the number of the transmission members is two groups.

[0036] The plug 31 is disposed on the second insertion section 42 and includes an insulator 311 and a plurality of terminals 312 disposed on the insulator 311 along the insertion direction. An insertion groove 313 is formed in the insulator 311, and the plurality of terminals 312 are all installed in the insertion groove 313 along the insertion direction. An arc groove 35 is jointly formed in the insulator 311 and the second insertion section 42. The radian of the arc groove 35 matches the radian of the second insertion section 42 and is formed along the circumferential direction of the second insertion section 42. The baffle 32 is an arc-shaped plate matching the arc groove 35 and is slidably connected to the arc groove 35. The baffle 32 can slide in the arc groove 35 along the circumferential direction of the second insertion section 42. One end of the baffle 32 is located in the arc groove 35, and the other end extends out of the arc groove 35 to extend into the insertion groove 313 to block the terminals 312. An elastic member 36 for driving the baffle 32 to reset is disposed between one end of the baffle 32 located in the arc groove 35 and the corresponding bottom wall of the arc groove 35. In the illustrated embodiment, the elastic member 36 is a spring. The lower end of the baffle 32 is fixedly connected to one end of the connecting rope 37 away from the sleeve 422. Thus, when the sleeve 422 rotates, the baffle 32 can be pulled by the connecting rope 37 to retract into the arc groove 35.

[0037] The fixing assemblies comprise several groups evenly spaced along the circumference of the annular ring 422 and positioned between the first insertion section 41 and the slot 421. Each group of fixing assemblies corresponds to a group of transmission members. Therefore, in the illustrated embodiment, there are two groups of fixing assemblies, one corresponding to each of the two groups of transmission members. Each group of fixing assemblies comprises a rotating member positioned on the first insertion section 41 and a fixed block 431 positioned at the bottom of the slot 421. The rotating member comprises a first subsection 432 positioned closer to the second insertion section 42 and a second subsection 433 positioned further away from the second insertion section 42. The first subsection 432 and the second subsection 433 are coaxially arranged, and their inner diameters match the outer diameter of the first insertion section 41. The first subsection 432 is positioned within the annular groove 412, and its inner and outer sidewalls, as well as the bottom wall adjacent to the second insertion section 42, contact the corresponding sidewalls and bottom wall of the annular groove 412, allowing it to rotate about its axis within the annular groove 412. The portion of the first subsection 432 corresponding to the guide slot 45 defines a vertical slot 4321 that matches the guide slot 45. A first transverse slot 4322 is defined along the circumference of the first subsection 432 on a lateral side of the vertical slot 4321 near one end of the second plug-in section 42. A side wall of the first transverse slot 4322 near the second plug-in section 42, a side wall of the first plug-in section 41 near the second plug-in section 42, and a side wall of the vertical slot 4321 near the first transverse slot 4322 collectively form an insert block 4323. A second transverse slot 4324 is defined along the circumference of the first distribution on a side of the vertical slot 4321 away from the first transverse slot 4322. The second transverse slot 4324 extends through the first plug-in section 41 toward the second plug-in section 42. A third transverse groove 4325 and a fourth transverse groove 4326 are formed along the circumference of the first subsection 432 at one end of the vertical groove 4321, away from the first transverse groove 4322 and the second transverse groove 4324. The third transverse groove 4325 and the first transverse groove 4322 are located on the same side of the vertical groove 4321, and the fourth transverse groove 4326 and the second transverse groove 4324 are located on the same side of the vertical groove 4321. The widths of the third transverse groove 4325 and the fourth transverse groove 4326 match the width of the sliding bar 425. The outer diameter of the second subsection 433 is larger than that of the first subsection 432, and the outer circumference of the second subsection 433 is provided with a plurality of anti-slip protrusions 4331, which are evenly spaced along the circumference of the second subsection 433. A limiting protrusion 44 is provided on the first plug-in section 41 at a position corresponding to the end of the second section 433 away from the first section 432. The limiting protrusion 44 is formed by the first plug-in section 41 protruding outward along its own radial direction. The limiting protrusion 44 can limit the axial movement of the rotating part along the first plug-in section 41.

[0038] The fixing block 431 is located on the bottom wall of the slot 421, between the inner wall of the ring 422 and the inner wall of the slot 421, and corresponds to the position of the slide bar 425. The width of the fixing block 431 also matches the width of the slide bar 425. The fixing block 431 is provided with a through-hole 4311, which extends along the circumference of the slot 421 and passes through the fixing block 431 at both ends. The size of the through-hole 4311 matches the size of the insert block 4323, allowing the insert block 4323 to pass through it.

[0039] The working method of one embodiment of a breathing tube and a ventilator of the present invention is as follows: in the initial state, the trachea 2 and the heating tube 3 are not connected, the vertical groove 4321 is aligned with the guide groove 45, the sliding rod 425 is located at the position closest to the first plug-in section 41 in its own travel, and the baffle 32 blocks the plug-in groove 313. When the air pipe 2 and the heating pipe 3 need to be connected, the guide groove 45 is aligned with the corresponding slide bar 425, and the first plug-in section 41 is inserted into the slot 421. The slide bar 425 is locked into the guide groove 45. As the first plug-in section 41 is continuously inserted, the slide bar 425 is continuously pushed inward along the slide groove 423. The other end of the slide bar 425 cooperates with the rotation groove 424 to rotate the ring 422 in the slot 421. The ring 422 is pulled by the connecting rope 37 to retract the baffle 32 into the arc-shaped slot 35 to expose the plug-in slot 313 and several terminals 312. At this time, the spring is compressed. When the first plug-in section 41 is inserted to the bottom of the slot 421, the corresponding fixing block 431 also enters the guide groove 45. The second portion 433 is then rotated to rotate the insert block 4323 until it is inserted into the through hole 4311. The corresponding slide bar 425 is now located within the third transverse groove 4325, and the first plug section 41 is secured within the slot 421. The other end of the trachea 2 is then sleeved onto the air outlet 11 of the ventilator 1, and the other end of the heating tube 3 is connected to the external respiratory mask.

[0040] When the air pipe 2 needs to be separated from the heating pipe 3, the second subsection 433 is rotated in the opposite direction, causing the slide bar 425 to enter the fourth transverse groove 4326 and the fixing block 431 to enter the second transverse groove 4324. At this point, only the slide bar 425 is fixed to the first plug-in section 41, and the fixing block 431 is no longer fixedly connected to the first plug-in section 41. The first plug-in section 41 is pulled outward from the slot 421, causing the slide bar 425 to move in the same direction. The slide bar 425, through the rotation groove 424, drives the ring 422 to rotate back to its initial position, thereby releasing the tension of the ring 422 on the connecting rope 37. The baffle 32 returns to its original position under the rebound force of the spring to cover the plug-in slot 313 and the terminal 312. When the slide bar 425 moves to the initial position, the second portion 433 is rotated to align the vertical slot 4321 with the guide slot 45 , so that the slide bar 425 can slide out of the guide slot 45 , and the first plug-in section 41 is separated from the second plug-in section 42 .

Claims

1. A breathing pipeline and a ventilator, comprising a ventilator, a trachea, and a heating tube, characterized in that: One end of the trachea is communicated with the air outlet of the ventilator, and the other end is communicated with one end of the heating tube through a set of connecting mechanisms. The other end of the heating tube can be communicated with an external breathing mask. The heating tube is provided with a plug that can be electrically connected to an external power supply. A baffle is provided at the plug, and the baffle is connected to the connecting mechanism. When the trachea is separated from the heating tube, the baffle blocks the plug to prevent dirt from entering the plug. When the trachea and the heating tube are fixedly connected together through the connecting mechanism, the baffle moves to expose the plug so that the plug can be electrically connected to an external power supply. The connecting mechanism includes a first insertion section provided at the end of the trachea and a second insertion section provided at the corresponding end of the heating tube. A slot for inserting the first insertion section therein is provided on the second insertion section. A fixing component is provided between the slot and the first insertion section. When the first insertion section is inserted to the bottom of the slot, the fixing component can fix the first insertion section in the slot. The plug and the baffle are located on the second insertion section. The cross-sections of the first insertion section, the second insertion section and the slot are all circular. The slot is defined as an annular groove coaxially provided with the second insertion section and penetrates the second insertion section in the direction close to the first insertion section. The connecting mechanism further includes a ring sleeve coaxially arranged in the slot. One end of the ring sleeve located in the slot is rotatably connected to the bottom wall of the slot so that the ring sleeve can rotate around its own axis in the slot. The ring sleeve is connected to the baffle through a connecting rope to control the shielding of the plug, and a transmission member is provided between the ring sleeve and the slot. When the first insertion section is inserted into the second insertion section, the ring sleeve can be driven to rotate through the transmission member.

2. The breathing tube and ventilator according to claim 1, characterized in that: The transmission member includes a chute provided on the inner wall of the inner ring of the slot, a spiral groove provided on the inner wall of the inner ring of the ring sleeve, and a sliding rod provided between the chute and the spiral groove. The chute is provided along the axial direction of the slot. The sliding rod is arranged along the radial direction of the slot, one end of which extends into the slot and is slidably connected to the slot, and the other end of the sliding rod extends into the spiral groove and is slidably connected to the spiral groove. When the first insertion section extends into the slot, the ring sleeve can be rotated by pushing the sliding rod.

3. The respiratory tube and ventilator according to claim 1, characterized in that: The plug includes an insulator and a plurality of terminals provided on the insulator. An arc-shaped groove for installing the baffle is jointly provided between the second insertion section and the insulator. One end of the connecting rope away from the ring sleeve is fixedly connected to one end of the baffle extending into the arc-shaped groove, and an elastic member for driving the baffle to reset is provided between one end of the baffle extending into the arc-shaped groove and the bottom wall of the arc-shaped groove.

4. The breathing tube and ventilator according to claim 1, characterized in that: The fixed component includes a rotating member provided on the first insertion section and a fixed block provided at the bottom of the slot. The rotating member can rotate around the central axis of the first insertion section. An insertion block is provided at one end of the rotating member close to the slot. A through hole is formed in the fixed block. By rotating the rotating member, the insertion block can be inserted into the through hole to fix the first insertion section in the slot.

5. The breathing tube and ventilator according to claim 4, characterized in that: The first insertion section is provided with a housing in a circumferential manner, and the end of the housing is connected to one end of the first insertion section close to the second insertion section. A ring groove for installing the rotating member is formed between the inner circumferential wall of the housing and the outer circumferential wall of the first insertion section. The first insertion section and the end of the housing close to the second insertion section are jointly provided with an axially arranged guiding groove, and the width of the guiding groove matches that of the fixed block.

6. The breathing tube and ventilator according to claim 5, characterized in that: The rotating member includes a first part located in the ring groove and a second part located outside the ring groove. A vertical groove matching the guiding groove is formed at the position of the first part corresponding to the guiding groove. A first transverse groove is formed in the circumferential direction of the first part on the transverse side of the vertical groove, so that the side wall of the first transverse groove close to the second insertion section, the side wall of the first insertion section close to the second insertion section, and the side wall of the vertical groove close to the first transverse groove jointly enclose the insertion block. A second transverse groove is formed in the circumferential direction of the first part on the side of the vertical groove away from the first transverse groove, and the second transverse groove penetrates the first insertion section in the direction close to the second insertion section.

7. The breathing tube and ventilator according to claim 6, characterized in that: The outer diameter of the second part is larger than that of the first part, and a plurality of anti-slip protrusions are provided on the outer circumference of the second part.

8. The breathing tube and the ventilator according to claim 7, characterized in that: A third transverse groove and a fourth transverse groove are formed in the circumferential direction of the first part at one end of the vertical groove away from the first transverse groove and the second transverse groove. The third transverse groove and the fourth transverse groove are respectively located on the circumferential two sides of the vertical groove.

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