A tube occlusion device for tracheostomy tubes

Abstract

The application discloses a tube blocking device for a tracheotomy cannula and belongs to the technical field of medical devices, which comprises a tube blocking body in communication with the tracheotomy cannula, an inlet-outlet air passage is formed in the center of the tube blocking body, the inlet-outlet air passage is in communication with the tracheotomy cannula, an adjusting mechanism for acting on the inlet-outlet air passage is arranged on one side of the inlet-outlet air passage in the tube blocking body, the adjusting mechanism can adjust the inner diameter of the inlet-outlet air passage, and a release mechanism for instantaneously opening the adjusting mechanism is arranged on the side of the adjusting mechanism relative to the inlet-outlet air passage; the tube blocking body is in communication with the tracheotomy cannula, the inlet-outlet air passage in the tube blocking body is in communication with the trachea, the inner diameter of the inlet-outlet air passage is adjusted through the adjusting mechanism, the release mechanism is used to instantaneously release the adjusting mechanism while the adjusting is performed, the passability of the inlet-outlet air passage is ensured, and then the tracheotomy cannula is blocked by the tube blocking body, thereby assisting the patient in slowly recovering the physiological respiratory state.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a tube-blocking device for a tracheostomy cannula. Background Technology

[0002] The tracheostomy tube is a commonly used medical device in tracheostomy. There are two main types of tracheostomy tubes: metal and plastic. During the patient's clinical recovery, as respiratory function improves, the patient needs to gradually transition from a tracheostomy state to normal physiological breathing, that is, from ventilation through the tracheostomy opening to ventilation through the mouth and nose. When the patient has recovered and needs extubation, a trial tube occlusion is necessary to observe the patient's breathing and determine if the patient can tolerate extubation. Therefore, the tube occlusion device is essential in tracheostomy.

[0003] Currently, there is no suitable device for attempting endotracheal occlusion in clinical practice. Doctors often use simple, non-standard items such as cotton swabs or test tube caps. These devices completely seal the tracheal opening, forcing the patient to immediately switch to oral and / or nasal ventilation. This increases inspiratory and expiratory resistance, causing rapid and excessive fatigue of the respiratory muscles, which the patient cannot tolerate, thus failing to achieve the intended occlusion. In some cases, when no suitable device can be found for endotracheal occlusion, the patient skips the occlusion process and is directly extubated, leading to some patients being unable to tolerate the post-extubation state and requiring a second tracheostomy. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a tube-blocking device for tracheostomy tubes, which solves the problem that existing tube-blocking devices do not conform to operating procedures and are not convenient for assisting patients in restoring their physiological breathing state.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A plugging device for a tracheostomy tube is provided, comprising a plugging body communicating with the tracheostomy tube, an air inlet / outlet channel being provided at the center of the plugging body and communicating with the tracheostomy tube, an adjustment mechanism acting on the air inlet / outlet channel being provided on one side of the plugging body, the adjustment mechanism being able to adjust the inner diameter of the air inlet / outlet channel, and a release mechanism being provided on the side of the adjustment mechanism opposite to the air inlet / outlet channel, which can instantly open the adjustment mechanism.

[0006] This invention connects the tube-blocking body to the tracheostomy tube, so that the air inlet and outlet channels inside the tube-blocking body are connected to the trachea. The inner diameter of the air inlet and outlet channels can be adjusted by an adjustment mechanism. While adjusting, the adjustment mechanism can be released instantly by a release mechanism to ensure the passage of the air inlet and outlet channels. Then, the tube-blocking body is used to test the tube blockage of the tracheostomy tube to help the patient slowly restore physiological breathing.

[0007] Furthermore, the adjustment mechanism includes an adjustment plate; an adjustment post is provided at one end of the upper surface of the adjustment plate, the adjustment post passes through the pre-set adjustment groove at the top of the plug body and is exposed outside the adjustment groove; one end of the adjustment plate is connected to the plug body through a first elastic member.

[0008] Furthermore, the other end of the regulating plate is provided with an arc-shaped part that fits into the air inlet and outlet channel. An opening is provided on the air inlet and outlet channel, and an inlet and outlet groove supporting the regulating plate is provided on the outside of the opening. The arc-shaped part of the regulating plate is placed in the inlet and outlet groove and slides through the opening in the inlet and outlet groove to abut against the inner wall of the air inlet and outlet channel.

[0009] Furthermore, a limit rod is provided at one end of the lower surface of the adjustment plate, and the limit rod is located inside the limit assembly.

[0010] Furthermore, the limiting assembly includes two limiting plates arranged opposite each other, and multiple rows of limiting blocks are provided on the inner side of each of the two limiting plates, with two limiting blocks in the same row blocking the limiting rod.

[0011] Furthermore, the end of the limiting plate is provided with two first connecting plates, and the inner wall of the plug body is provided with two second connecting plates. The two first connecting plates and the two second connecting plates are connected by a rotating shaft, and a torsion spring acting on the limiting plate is provided on the rotating shaft.

[0012] Furthermore, the release mechanism includes a button located on the top of the plug body, and a release block located below the button; the release block is located at the other end of the two limiting plates, and the release block is inverted trapezoidal, with the bottom of the inverted trapezoid located between the two limiting plates.

[0013] Furthermore, a locking mechanism is provided at the bottom of the plug body.

[0014] Furthermore, the locking mechanism includes a mounting ring disposed at the bottom of the plug body and a rotating sleeve mounted on the mounting ring; multiple sets of locking blades are disposed between the mounting ring and the rotating sleeve; The mounting ring has an adjustment groove and a guide groove. One end of the locking blade is equipped with an adjustment shaft, and the other end of the locking blade is equipped with a guide shaft. The adjustment shaft passes through the adjustment groove to connect the mounting ring and the rotating sleeve, and the guide shaft is placed in the guide groove.

[0015] Furthermore, a connecting ring is provided on the adjusting shaft, and the connecting ring is connected to the inner wall of the end of the adjusting groove through a second elastic element.

[0016] This invention discloses a plugging device for a tracheostomy cannula, the advantages of which are: 1. This invention connects the tube-blocking body to the tracheostomy tube, so that the air inlet and outlet channels inside the tube-blocking body are connected to the trachea. The inner diameter of the air inlet and outlet channels can be adjusted by the adjustment mechanism. At the same time as adjustment, the adjustment mechanism can be released instantly by the release mechanism to ensure the passability of the air inlet and outlet channels. Then, the tube-blocking body is used to test the tube blockage of the tracheostomy tube to help the patient slowly restore physiological breathing.

[0017] 2. The present invention provides a locking mechanism at the bottom of the plug body, which can fix the air tube and prevent the air tube from falling off the plug body, thereby improving the applicability of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a plugging device for a tracheotomy tube according to the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of a plugging device for a tracheotomy tube according to the present invention.

[0020] Figure 3 This is a schematic diagram of the top structure of a plugging device for a tracheotomy tube according to the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the adjustment plate of the present invention.

[0022] Figure 5 This is a schematic diagram of the limiting component of the present invention.

[0023] Figure 6 This is a schematic diagram of the limiting component of the present invention from another angle.

[0024] Figure 7 This is a schematic diagram of the structure of the release block of the present invention.

[0025] Figure 8 This is a schematic diagram of the mounting ring of the present invention.

[0026] Figure 9 This is a schematic diagram of the mounting ring of the present invention from another angle.

[0027] Figure 10 This is a schematic diagram of the locking blade of the present invention.

[0028] Figure 11 This is a schematic diagram of the rotating sleeve of the present invention.

[0029] Figure 12 This is a schematic diagram of the adjusting groove of the present invention.

[0030] The components are as follows: 1. Pipe plug body; 11. Adjustment hole; 12. Mounting groove; 13. Filter screen; 14. Fixing ring; 15. Second connecting plate; 2. Air inlet / outlet channel; 21. Opening; 22. Inlet / outlet groove; 3. Adjustment mechanism; 31. Adjustment plate; 32. Adjustment column; 33. First elastic element; 34. Arc-shaped part; 35. Limiting rod; 36. Limiting assembly; 361. Limiting plate; 362. Limiting block; 363. First connecting plate; 364. Rotating shaft; 365. Torsion spring; 4. Release mechanism; 41. Button; 42. Release block; 5. Locking mechanism; 51. Mounting ring; 52. Rotating sleeve; 53. Locking blade; 54. Adjustment groove; 55. Guide groove; 56. Adjustment shaft; 57. Guide shaft; 58. Connecting ring; 59. Second elastic element; 510. Connecting block. Detailed Implementation The present invention is described in detail with reference to specific embodiments to enable those skilled in the art to understand the invention. However, it should be understood that the invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0031] Example 1 refer to Figures 1-3 This is a schematic diagram of a tracheostomy tube blocking device according to this embodiment. Its purpose is to solve the problem that existing tube blocking devices do not meet the operating specifications and are not convenient for assisting patients to restore their physiological breathing state. The specific structure of this embodiment will be described in detail below.

[0032] A plugging device for a tracheostomy tube includes a plugging body 1 that communicates with the tracheostomy tube, and an air inlet / outlet channel 2 is provided at the center of the plugging body 1, which communicates with the tracheostomy tube.

[0033] Specifically, the plug body 1 is provided with an adjustment mechanism 3 that acts on the air inlet and outlet channel 2 on one side. The adjustment mechanism 3 can adjust the inner diameter of the air inlet and outlet channel 2. The adjustment mechanism 3 is provided with a release mechanism 4 that can be opened instantly on the side of the adjustment mechanism 3 relative to the air inlet and outlet channel 2.

[0034] In this embodiment, the present invention connects the tube-blocking body 1 with the tracheostomy tube, so that the air inlet and outlet channel 2 inside the tube-blocking body 1 is connected with the trachea. The inner diameter of the air inlet and outlet channel 2 can be adjusted by the adjustment mechanism 3. At the same time as adjustment, the adjustment mechanism 3 can be released instantly by the release mechanism 4 to ensure the passability of the air inlet and outlet channel 2. Then, the tube-blocking body 1 is used to test the tube blockage of the tracheostomy tube to help the patient slowly restore physiological breathing.

[0035] Furthermore, the outlet of the air inlet / outlet channel 2 is provided with an installation groove 12, and a filter screen 13 is provided in the installation groove 12. The filter screen 13 is detachably fixed in the installation groove 12 by a fixing ring 14. The fixing ring 14 is interference-fitted in the installation groove 12, thereby filtering the air entering and exiting the air inlet / outlet channel 2 through the filter screen 13 to prevent external air from infecting the patient.

[0036] Example 2 refer to Figure 2 , Figures 4-7 This is a schematic diagram of a tracheostomy tube blocking device according to this embodiment. Its purpose is to solve the problem that the existing tube blocking devices do not meet the operating specifications and are not convenient to assist patients in restoring their physiological breathing state. Based on Embodiment 1, this embodiment provides a further solution for the adjustment mechanism 3. The specific structure of the adjustment mechanism 3 in this embodiment will be described in detail below.

[0037] The adjustment mechanism 3 includes an adjustment plate 31. An adjustment post 32 is provided at one end of the upper surface of the adjustment plate 31. The adjustment post 32 passes through the adjustment hole 11 preset at the top of the plug body 1 and is exposed outside the adjustment hole 11. One end of the adjustment plate 31 is connected to the plug body 1 through the first elastic member 33.

[0038] Specifically, the other end of the adjusting plate 31 is provided with an arc-shaped part 34 that fits into the air inlet and outlet channel 2. An opening 21 is provided on the air inlet and outlet channel 2, and an inlet and outlet groove 22 supporting the adjusting plate 31 is provided on the outside of the opening 21. The arc-shaped part 34 of the adjusting plate 31 is placed in the inlet and outlet groove 22 and slides through the opening 21 in the inlet and outlet groove 22 to abut against the inner wall of the air inlet and outlet channel 2. In this embodiment, one end of the adjusting plate 31 is rectangular and is connected to the inner wall of the plugging body 1 through the first elastic element 33. The first elastic element 33 is a spring, which pulls the adjusting plate 31 closer to the inner wall of the plugging body 1.

[0039] The other end of the adjusting plate 31 is an arc-shaped part 34 that fits into the inner wall of the air inlet and outlet channel 2. An opening 21 is provided on the air inlet and outlet channel 2 to accommodate the arc-shaped part 34. An inlet and outlet groove 22 for supporting the adjusting plate 31 is provided on the outside of the opening 21. The arc-shaped part 34 of the adjusting plate 31 is placed in the inlet and outlet groove 22.

[0040] An adjustment post 32 is provided at one end of the upper surface of the adjustment plate 31. The adjustment post 32 passes through the adjustment hole 11 pre-set at the top of the plug body 1 and is exposed outside the adjustment hole 11. Thus, when the operator pushes the adjustment post 32 to move within the adjustment hole 11, the adjustment plate 31 overcomes the elastic potential energy of the first elastic element 33, causing the arc-shaped part 34 of the adjustment plate 31 to pass through the opening 21 until the arc-shaped part 34 fits against the inner wall of the air inlet and outlet channel 2, completely sealing the air inlet and outlet channel 2.

[0041] Specifically, a limit rod 35 is provided at one end of the lower surface of the adjustment plate 31, and the limit rod 35 is located inside the limit assembly 36.

[0042] In this embodiment, a limiting rod 35 is provided at one end of the lower surface of the adjusting plate 31. The limiting rod 35 is located inside the limiting component 36, thereby providing a blockage to the movement of the adjusting plate 31 through the limiting component 36, and controlling the size of the arc-shaped part 34 that closes the air inlet and outlet passage 2.

[0043] Specifically, the limiting component 36 includes two limiting plates 361 arranged opposite to each other, and multiple rows of limiting blocks 362 are provided on the inner side of both limiting plates 361, with two limiting blocks 362 in the same row blocking the limiting rod 35.

[0044] In this embodiment, two opposing limiting plates 361 are disposed on both sides of the limiting rod 35, and multiple rows of limiting blocks 362 are disposed on the inner side of both limiting plates 361. Two limiting blocks 362 in the same row block the limiting rod 35. The shape of the limiting block 362 is a right trapezoid.

[0045] Specifically, the end of the limiting plate 361 is provided with two first connecting plates 363, and the inner wall of the plug body 1 is provided with two second connecting plates 15. The two first connecting plates 363 and the two second connecting plates 15 are connected by a rotating shaft 364, and a torsion spring 365 acting on the limiting plate 361 is provided on the rotating shaft 364.

[0046] In this embodiment, both limiting plates 361 are rotatably mounted on the inner wall of the plug body 1. Two first connecting plates 363 are provided at the ends of the limiting plates 361, and two second connecting plates 15 are provided on the inner wall of the plug body 1. The two first connecting plates 363 and the two second connecting plates 15 are connected by a rotating shaft 364. At the same time, a torsion spring 365 acting on the limiting plates 361 is provided on the rotating shaft 364. Thus, through the action of the torsion spring 365, the two limiting plates 361 are brought closer to each other. When the adjusting plate 31 drives the limiting rod 35 to move forward, the limiting rod 35 can squeeze the two limiting plates 361 to pass through, while the two limiting plates 361 can prevent the limiting rod 35 from returning.

[0047] Furthermore, the multi-row limit block 362 can divide the forward movement of the adjustment plate 31 into multiple levels, so that the inner diameter of the air passage 2 can be adjusted by the entry distance of the adjustment plate 31 in multiple levels, so that the patient can adapt to the process of gradually closing the trachea, which is less likely to cause poor patient tolerance. It allows the patient to gradually switch from tracheal breathing to mouth / nose breathing, thereby achieving a training effect and less likely to cause extreme discomfort to the patient.

[0048] Specifically, the release mechanism 4 includes a button 41 located on the top of the plug body 1, a release block 42 located below the button 41, the release block 42 being located at the other end of the two limiting plates 361, and the release block 42 being an inverted trapezoid with the bottom of the inverted trapezoid located between the two limiting plates 361.

[0049] In this embodiment, the release block 42 is arrow-shaped, with its bottom falling between two opposing limiting plates 361, preventing the two limiting plates 361 from getting closer to each other. Furthermore, if the patient experiences intolerance during the gradual tracheal closure process, pressing the button 41 will cause the release block 42 to fall completely between the two opposing limiting plates 361, widening the distance between them. This causes the two limiting blocks 362 in the same row to move away instantly, releasing the limiting rod 35 on the lower surface of the adjusting plate 31. Under the action of the elastic potential energy of the first elastic element 33, the adjusting plate 31 instantly retracts to its initial position on the inner wall of the tube-blocking body 1, thereby reducing the difficulty of patient adaptation and improving the patient's training effect.

[0050] Example 3 refer to Figures 8-12 This is a schematic diagram of a tracheostomy tube blocking device according to this embodiment. Its purpose is to solve the problem that existing tube blocking devices do not meet the operating specifications and are not convenient for assisting patients to restore their physiological breathing state. The specific structure of this embodiment will be described in detail below.

[0051] A locking mechanism 5 is provided at the bottom of the plug body 1.

[0052] Specifically, the locking mechanism 5 includes an installation ring 51 located at the bottom of the plug body 1, and a rotating sleeve 52 mounted on the installation ring 51. Multiple sets of locking blades 53 are provided between the installation ring 51 and the rotating sleeve 52. The installation ring 51 is provided with an adjustment groove 54 and a guide groove 55. One end of the locking blade 53 is provided with an adjustment shaft 56, and the middle of the other end of the locking blade 53 is provided with a guide shaft 57. The adjustment shaft 56 passes through the adjustment groove 54 to connect the installation ring 51 and the rotating sleeve 52, and the guide shaft 57 is placed in the guide groove 55.

[0053] In this embodiment, a locking mechanism 5 is provided at the bottom of the plugging body 1. The air tube can be fixed by the locking mechanism 5, thereby preventing the air tube from falling off the plugging body 1 and improving the applicability of the device.

[0054] The locking mechanism 5 includes a mounting ring 51 located at the bottom of the plug body 1. The middle part of the mounting ring 51 is an air pipe channel through which the air supply pipe passes. The air pipe channel is connected to the air inlet and outlet channels 2. Multiple connecting blocks 510 are evenly arranged on the side of the mounting ring 51 near the bottom of the plug body 1. Each connecting block 510 is located between adjacent adjustment grooves 54 and can be connected by adhesive or other means. The connecting blocks 510 create a gap between the plug body 1 and the mounting ring 51, thereby facilitating the movement of the adjustment shaft 56 and the guide shaft 57.

[0055] Both the adjusting groove 54 and the guiding groove 55 are arc-shaped grooves, and multiple adjusting grooves 54 and guiding grooves 55 are coaxially arranged with the mounting ring 51. At the same time, multiple adjusting grooves 54 and guiding grooves 55 are evenly arranged along the axis of the mounting ring 51, and the mounting ring 51 is concentric with the rotating sleeve 52.

[0056] When the trachea passes through the trachea channel and is inserted into the inlet / outlet air channel 2, rotating the rotating sleeve 52 in the forward direction causes it to rotate along its own axis. This drives the adjusting shaft 56 to move along the inner wall of the adjusting groove 54, and the guiding shaft 57 to move along the inner wall of the guiding groove 55. This causes the locking blades 53 to move closer together, reducing the inner diameter of the trachea channel and locking the trachea within it. Similarly, rotating the rotating sleeve 52 in the reverse direction increases the inner diameter of the trachea channel, releasing the trachea within it. The locking mechanism 5 then secures the trachea, preventing it from detaching from the plug body 1 and improving the applicability of the device.

[0057] Specifically, a connecting ring 58 is provided on the adjusting shaft 56, and the connecting ring 58 is connected to the inner wall of the end of the adjusting groove 54 through the second elastic element 59.

[0058] In this embodiment, a connecting ring 58 is provided on the adjusting shaft 56. The connecting ring 58 is connected to the inner wall of the end of the adjusting groove 54 through a second elastic member 59. The second elastic member 59 can be a spring. The connecting ring 58 is positioned at the end of the adjusting groove 54 through the second elastic member 59, so that the adjusting shaft 56 is at the maximum distance of forward rotation, thereby so that the multiple sets of locking blades 53 are in the state of minimum inner diameter.

[0059] When it is necessary to lock the air tube, the rotating sleeve 52 needs to be rotated in the opposite direction to increase the inner diameter of the air tube channel, so that the air tube can be inserted into the air inlet / outlet channel 2 through the air tube channel. After the insertion is completed, the rotating sleeve 52 is released, and the adjusting shaft 56 retracts towards the end of the adjusting groove 54 under the action of the second elastic element 59, thereby driving multiple sets of locking blades 53 to fix the air tube.

[0060] The working principle of the plugging device for tracheostomy cannulas in this solution is as follows: In practical applications, this invention Figures 1-12When in use, the rotating sleeve 52 is rotated in the opposite direction to increase the inner diameter of the airway channel, thereby allowing the airway to be inserted into the air inlet / outlet channel 2 through the airway channel. After insertion, the rotating sleeve 52 is released, and the adjusting shaft 56 retracts towards the end of the adjusting groove 54 under the action of the second elastic element 59, thereby driving multiple sets of locking blades 53 to fix the airway, so that the air inlet / outlet channel 2 in the plug body 1 is connected to the airway.

[0061] Then, by pushing the adjusting column 32 to move within the adjusting hole 11, the adjusting plate 31 is driven to overcome the elastic potential energy of the first elastic element 33, so that the arc-shaped part 34 of the adjusting plate 31 passes through the opening 21 until the arc-shaped part 34 fits against the inner wall of the air inlet and outlet channel 2, completely sealing the air inlet and outlet channel 2.

[0062] During this process, the multi-row limit block 362 can divide the forward movement of the adjustment plate 31 into multiple levels, so that the inner diameter of the air passage 2 can be adjusted by the entry distance of the adjustment plate 31 in multiple levels, so that the patient can adapt to the process of gradually closing the trachea, which is less likely to cause poor patient tolerance. It allows the patient to gradually switch from tracheal breathing to mouth / nose breathing, thereby achieving a training effect and less likely to cause extreme discomfort to the patient.

[0063] Thus, the inner diameter of the inlet and outlet air passage 2 can be adjusted by the adjustment mechanism 3. At the same time, the release mechanism 4 can be used to release the adjustment mechanism 3 instantly to ensure the passability of the inlet and outlet air passage 2. Then, the tube blocking body 1 can be used to test the tube blocking of the tracheostomy tube to help the patient slowly recover physiological breathing.

[0064] Although specific embodiments of the invention have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by a person skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A plugging device for a tracheostomy cannula, characterized in that: Includes a plug body (1) that is connected to the tracheostomy tube; The plug body (1) has an air inlet / outlet channel (2) at its center, and the air inlet / outlet channel (2) is connected to the air pipe sleeve; The plug body (1) is provided with an adjustment mechanism (3) acting on the inlet and outlet air passage (2) on one side. The adjustment mechanism (3) can adjust the inner diameter of the inlet and outlet air passage (2). The regulating mechanism (3) is provided with a release mechanism (4) that can instantly open the regulating mechanism (3) on one side relative to the air inlet and outlet channel (2). The adjustment mechanism (3) includes an adjustment plate (31); an adjustment column (32) is provided at one end of the upper surface of the adjustment plate (31), the adjustment column (32) passes through the adjustment hole (11) preset at the top of the plug body (1) and is exposed outside the adjustment hole (11); one end of the adjustment plate (31) is connected to the plug body (1) through a first elastic element (33); The other end of the adjusting plate (31) is provided with an arc-shaped part (34) that fits into the air inlet and outlet channel (2). An opening (21) is provided on the air inlet and outlet channel (2). An inlet and outlet groove (22) supporting the adjusting plate (31) is provided on the outside of the opening (21). The arc-shaped part (34) of the adjusting plate (31) is placed in the inlet and outlet groove (22) and slides through the opening (21) in the inlet and outlet groove (22) to abut against the inner wall of the air inlet and outlet channel (2). A limit rod (35) is provided at one end of the lower surface of the adjustment plate (31), and the limit rod (35) is located inside the limit assembly (36); The limiting component (36) includes two limiting plates (361) arranged opposite to each other, and multiple rows of limiting blocks (362) are provided on the inner side of the two limiting plates (361). The two limiting blocks (362) in the same row block the limiting rod (35). The end of the limiting plate (361) is provided with two first connecting plates (363), and the inner wall of the plug body (1) is provided with two second connecting plates (15). The two first connecting plates (363) and the two second connecting plates (15) are connected by a rotating shaft (364), and a torsion spring (365) acting on the limiting plate (361) is provided on the rotating shaft (364). The release mechanism (4) includes a button (41) disposed on the top of the plug body (1), and a release block (42) is disposed below the button (41); the release block (42) is located at the other end of the two limiting plates (361), and the release block (42) is an inverted trapezoid, with the bottom of the inverted trapezoid located between the two limiting plates (361).

2. The plugging device for a tracheotomy cannula according to claim 1, characterized in that: The bottom of the plug body (1) is provided with a locking mechanism (5).

3. The plugging device for a tracheotomy cannula according to claim 2, characterized in that: The locking mechanism (5) includes a mounting ring (51) disposed at the bottom of the plug body (1) and a rotating sleeve (52) mounted on the mounting ring (51); a plurality of locking blades (53) are disposed between the mounting ring (51) and the rotating sleeve (52). The mounting ring (51) is provided with an adjustment groove (54) and a guide groove (55). One end of the locking blade (53) is provided with an adjustment shaft (56), and the other end of the locking blade (53) is provided with a guide shaft (57). The adjustment shaft (56) passes through the adjustment groove (54) and connects the mounting ring (51) and the rotating sleeve (52). The guide shaft (57) is placed in the guide groove (55).

4. The plugging device for a tracheotomy cannula according to claim 3, characterized in that: A connecting ring (58) is provided on the adjusting shaft (56), and the connecting ring (58) is connected to the inner wall of the end of the adjusting groove (54) through the second elastic element (59).

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