Novel double-cavity trachea cannula

Abstract

The utility model discloses a novel double-cavity trachea cannula which comprises a trachea cannula body and further comprises a ventilation mechanism, a single-lung ventilation switching mechanism and a fiber bronchoscopy tube, one end of the trachea cannula body is connected with the ventilation mechanism used for supplying oxygen to the lung of a patient, and the other end of the trachea cannula body is connected with the single-lung ventilation switching mechanism. The middle of the ventilation mechanism is connected with a single-lung ventilation switching mechanism used for controlling single-lung ventilation of the lung of a patient, and the surface of the trachea cannula is fixedly connected with a fiberoptic bronchoscopy tube. According to the novel double-cavity trachea cannula, the single-lung ventilation switching mechanism is improved, switching between the single-lung ventilation hole and the double-lung ventilation hole can be achieved by rotating the airway switching ring during single-lung ventilation, the double-lung ventilation hole is made to stop making contact with the surface of the air guide ring, meanwhile, the single-lung ventilation hole can be made to be aligned with any one of the air holes, and the single-lung ventilation hole is made to be aligned with any one of the air holes. Therefore, the air hole on the other side is closed, and switching between single-lung ventilation and double-lung ventilation can be completed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a novel double-lumen endotracheal cannula. Background Art

[0002] A double-lumen endotracheal tube is a specially designed endotracheal tube. Its main feature is that the endotracheal tube is divided into two. One side of the tube leads to the left or right main bronchus along the end of the tube, and the other side of the tube opens to the main airway, thereby achieving the effect of independent ventilation of the left and right lungs. Single-lung mechanical ventilation is used in lung surgery, which makes surgical operations easier.

[0003] Double-lumen endotracheal tubes usually consist of three parts: an air bag, an endotracheal channel, and a ventilation conversion device. The air bag is used to fix the tube and prevent gas leakage, the endotracheal channel is used for ventilation, and the ventilation conversion device is used to convert the airway between single-lung ventilation and double-lung ventilation.

[0004] In the prior art, a separate ventilation conversion device is required for switching between single-lung and double-lung ventilation, and the device has many parts and is very easy to be lost during frequent switching. At the same time, the operation method is relatively cumbersome and cannot achieve rapid switching between single-lung and double-lung ventilation. Therefore, it is necessary to propose a new double-lumen endotracheal tube to solve the technical problems mentioned in the above patents and provide a new technical solution. Utility Model Content

[0005] Based on this, it is necessary to provide a new type of double-lumen endotracheal tube to address the above technical problems. By improving the single-lung ventilation switching mechanism, the single-lung ventilation hole and the double-lung ventilation hole can be switched by rotating the airway switching ring during single-lung ventilation, so that the double-lung ventilation hole stops contacting with the surface of the air guide ring, and the single-lung ventilation hole can be aligned with any one of the holes, thereby achieving the closure of the hole on the other side, and then completing the switching between single-lung and double-lung ventilation.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A novel double-lumen endotracheal tube is used for rapid switching between single-lung and double-lung ventilation during lung isolation. The novel double-lumen endotracheal tube specifically includes an endotracheal tube, a ventilation mechanism, a single-lung ventilation switching mechanism, and a fiberbronchoscope inspection tube. One end of the endotracheal tube is connected to a ventilation mechanism for supplying oxygen to the patient's lungs, the middle of the ventilation mechanism is connected to a single-lung ventilation switching mechanism for controlling single-lung ventilation of the patient's lungs, and the surface of the endotracheal tube is fixedly connected to a fiberbronchoscope inspection tube;

[0008] The ventilation mechanism includes a tracheal fixing ring seat, a first threaded butt joint, a ventilation chamber, a sealing assembly, an air guide assembly and a ventilator docking assembly; one end of the tracheal cannula is fixedly connected to the tracheal fixing ring seat; the surface of the tracheal fixing ring seat is rotatably connected to the first threaded butt joint; the surface of the first threaded butt joint is threadedly connected to the ventilation chamber.

[0009] As a preferred embodiment of the new double-lumen endotracheal tube provided by the utility model, the sealing assembly includes a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring, the first sealing ring is fixedly connected to the middle of the ventilation chamber, the second sealing ring is fixedly connected to the inner wall of the ventilation chamber, the third sealing ring is fixedly connected to the inner wall of the ventilation chamber, and the fourth sealing ring is fixedly connected to the inner wall of the ventilation chamber.

[0010] As a preferred embodiment of the new double-lumen endotracheal cannula provided by the utility model, the air guide assembly includes an air guide ring, an air hole and a ventilation cannula, an air hole is opened in the middle of the first sealing ring and the second sealing ring, and air holes are symmetrically opened on the surface of the air hole, and a ventilation cannula is fixedly connected to the middle of the two air holes, and the ventilation cannula is inserted into the middle of the endotracheal cannula.

[0011] As a preferred embodiment of the new double-lumen endotracheal cannula provided by the utility model, the ventilator docking assembly includes a second threaded docking joint and a fixed screwing ring, the middle parts of the third sealing ring and the fourth sealing ring are rotatably connected with the second threaded docking joint, and the surface of the second threaded docking joint is fixedly connected with the fixed screwing ring.

[0012] As a preferred embodiment of the new double-lumen endotracheal cannula provided by the utility model, the single-lung ventilation switching mechanism includes an airway switching ring, a double-lung ventilation hole, a single-lung ventilation hole and an adjustment component, the middle parts of the second sealing ring and the third sealing ring are rotatably connected with the airway switching ring, the surface of the airway switching ring is symmetrically provided with double-lung ventilation holes, the two double-lung ventilation holes correspond one-to-one to the two air holes, and the surface of the airway switching ring is provided with a single-lung ventilation hole.

[0013] As a preferred embodiment of the new double-lumen endotracheal cannula provided by the utility model, the adjustment component includes a guide groove, a slider and a movable screw ring, the surface of the ventilation chamber is provided with a guide groove in a semi-circular shape of 180 degrees, the inner wall of the guide groove is slidably connected to a slider, one end of the slider is fixedly connected to the surface of the airway switching ring, the end of the slider away from the airway switching ring is fixedly connected to the movable screw ring, and the movable screw ring is rotatably connected to the surface of the ventilation chamber.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The novel double-lumen endotracheal tube provided by the utility model improves the single-lung ventilation switching mechanism. During single-lung ventilation, the single-lung ventilation hole and the double-lung ventilation hole can be switched by rotating the airway switching ring, so that the double-lung ventilation hole stops contacting with the surface of the air guide ring, and the single-lung ventilation hole can be aligned with any one of the air holes, so as to close the air hole on the other side, and then the switching between single-lung and double-lung ventilation can be completed.

[0016] The novel double-lumen endotracheal cannula provided by the utility model has an adjustment component in the single-lung ventilation switching mechanism. When single-lung or double-lung ventilation is required, the movable screw ring is rotated to cause the slider to drive the internal airway switching ring to rotate. At the same time, the movable screw ring can be switched to another ventilation mode every time it is rotated ninety degrees, thereby achieving the purpose of quickly switching the ventilation mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a novel double-lumen endotracheal tube provided by the utility model;

[0019] Figure 2 A schematic diagram of the overall internal structure of the novel double-lumen endotracheal tube provided by the utility model;

[0020] Figure 3 A schematic diagram of the structure of a novel double-lumen endotracheal tube ventilation mechanism and an endotracheal tube connecting assembly provided by the utility model;

[0021] Figure 4 A schematic diagram of the structure of a sealing component in a novel double-lumen endotracheal tube ventilation mechanism provided by the utility model;

[0022] Figure 5 A schematic diagram of the structure of a novel double-lumen endotracheal tube air guide ring and an airway switching ring provided by the utility model;

[0023] Figure 6 The utility model is a schematic diagram of the structure of the connecting components in the novel double-lumen endotracheal tube ventilation mechanism provided by the utility model.

[0024] The markings in the figure are as follows:

[0025] 1. Endotracheal cannula; 2. Ventilation mechanism; 3. Single-lung ventilation switching mechanism; 4. Endotracheal fixing ring seat; 5. First threaded joint; 6. Ventilation chamber; 7. First sealing ring; 8. Second sealing ring; 9. Air guide ring; 10. Air hole; 11. Ventilation cannula; 12. Third sealing ring; 13. Fourth sealing ring; 14. Second threaded joint; 15. Fixed screw ring; 16. Guide groove; 17. Sliding block; 18. Movable screw ring; 19. Airway switching ring; 20. Double-lung ventilation hole; 21. Single-lung ventilation hole; 22. Fiber bronchoscope inspection tube. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] As described in the background art, a separate ventilation conversion device is required for switching between single-lung and double-lung ventilation, and the device has many parts and is very easy to lose during frequent switching. At the same time, the operation method is relatively cumbersome and cannot achieve rapid switching between single-lung and double-lung ventilation.

[0028] In order to solve this technical problem, the utility model provides a novel double-lumen endotracheal tube, which is used for rapid switching between single-lung and double-lung ventilation during lung isolation.

[0029] Specifically, please refer to Figure 1-Figure 6 The novel double-lumen endotracheal tube specifically includes an endotracheal tube 1, a ventilation mechanism 2, a single-lung ventilation switching mechanism 3 and a fiber bronchoscope inspection tube 22. One end of the endotracheal tube 1 is connected to the ventilation mechanism 2 for supplying oxygen to the patient's lungs, the middle part of the ventilation mechanism 2 is connected to the single-lung ventilation switching mechanism 3 for controlling single-lung ventilation of the patient's lungs, and the surface of the endotracheal tube is fixedly connected to the fiber bronchoscope inspection tube 22;

[0030] The ventilation mechanism 2 includes a tracheal fixing ring seat 4, a first threaded joint 5, a ventilation chamber 6, a sealing assembly, an air guide assembly and a ventilator docking assembly. One end of the tracheal tube 1 is fixedly connected to the tracheal fixing ring seat 4, the surface of the tracheal fixing ring seat 4 is rotatably connected to the first threaded joint 5, and the surface of the first threaded joint 5 is threadedly connected to the ventilation chamber 6.

[0031] The novel double-lumen endotracheal cannula provided by the utility model improves the single-lung ventilation switching mechanism 3. During single-lung ventilation, the single-lung ventilation hole 21 and the double-lung ventilation hole 20 can be switched by rotating the airway switching ring 19, so that the double-lung ventilation hole 20 stops contacting with the surface of the air guide ring 9, and at the same time, the single-lung ventilation hole 21 can be aligned with any one of the air holes 10, so as to close the air hole 10 on the other side, thereby completing the switching between single-lung and double-lung ventilation.

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] Embodiment 1:

[0034] Please refer to Figure 1-Figure 5 A novel double-lumen endotracheal tube comprises an endotracheal tube 1, a ventilation mechanism 2, a single-lung ventilation switching mechanism 3 and a fiber bronchoscope inspection tube 22. One end of the endotracheal tube 1 is connected to the ventilation mechanism 2 for supplying oxygen to the patient's lungs, the middle of the ventilation mechanism 2 is connected to the single-lung ventilation switching mechanism 3 for controlling single-lung ventilation of the patient's lungs, the surface of the endotracheal tube is fixedly connected to the fiber bronchoscope inspection tube 22, and a sealing cover is provided on the top of the fiber bronchoscope inspection tube 22. The tracheoscope can be placed in the middle of the endotracheal tube 1 by opening the sealing cover on the top of the fiber bronchoscope inspection tube;

[0035] The ventilation mechanism 2 includes a tracheal fixing ring seat 4, a first threaded joint 5, a ventilation chamber 6, a sealing assembly, an air guide assembly and a ventilator docking assembly. One end of the tracheal tube 1 is fixedly connected to the tracheal fixing ring seat 4, the surface of the tracheal fixing ring seat 4 is rotatably connected to the first threaded joint 5, and the surface of the first threaded joint 5 is threadedly connected to the ventilation chamber 6.

[0036] Specifically, the sealing assembly includes a first sealing ring 7, a second sealing ring 8, a third sealing ring 12 and a fourth sealing ring 13. The first sealing ring 7 is fixedly connected to the middle of the ventilation chamber 6, the second sealing ring 8 is fixedly connected to the inner wall of the ventilation chamber 6, the third sealing ring 12 is fixedly connected to the inner wall of the ventilation chamber 6, and the fourth sealing ring 13 is fixedly connected to the inner wall of the ventilation chamber 6.

[0037] Specifically, the air guide component includes an air guide ring 9, an air hole 10 and a ventilation tube 11. The air hole 10 is opened in the middle of the first sealing ring 7 and the second sealing ring 8, and the air holes 10 are symmetrically opened on the surface of the air hole 10. The middle of the two air holes 10 are fixedly connected to the ventilation tube 11, and the ventilation tube 11 is inserted into the middle of the tracheal tube 1.

[0038] Specifically, the ventilator docking assembly includes a second threaded docking joint 14 and a fixed screwing ring 15 , the middle of the third sealing ring 12 and the fourth sealing ring 13 are rotatably connected to the second threaded docking joint 14 , and the surface of the second threaded docking joint 14 is fixedly connected to the fixed screwing ring 15 .

[0039] Through the above structural design, when the device is used, the endotracheal tube 1 is first inserted into the patient's trachea. After completion, the first threaded joint 5 is screwed and connected to the ventilation chamber 6 through threads. At the same time, the two ventilation tubes 11 in the middle of the air guide ring 9 are respectively inserted into the two airways of the endotracheal tube 1. After completion, the ventilation chamber 6 is connected to the ventilator through the second threaded joint 14, thereby completing the oxygen supply ventilation to the patient's lungs. By integrating the ventilation conversion device into one, the problem of component loss during the conversion process can be avoided.

[0040] Embodiment 2:

[0041] The novel double-lumen endotracheal tube provided in Example 1 is further optimized, specifically, as Figure 3-Figure 6 As shown, the single-lung ventilation switching mechanism 3 includes an airway switching ring 19, double-lung ventilation holes 20, single-lung ventilation holes 21 and an adjustment component. The middle parts of the second sealing ring 8 and the third sealing ring 12 are rotatably connected with the airway switching ring 19. The surface of the airway switching ring 19 is symmetrically provided with double-lung ventilation holes 20. The two double-lung ventilation holes 20 correspond one-to-one to the two air holes 10. The surface of the airway switching ring 19 is provided with a single-lung ventilation hole 21.

[0042] Specifically, the adjustment component includes a guide groove 16, a slider 17 and a movable screw ring 18. The surface of the ventilation chamber 6 is provided with a guide groove 16 in a semi-circular shape of 180 degrees. The inner wall of the guide groove 16 is slidably connected to the slider 17. One end of the slider 17 is fixedly connected to the surface of the airway switching ring 19. The end of the slider 17 away from the airway switching ring 19 is fixedly connected to the movable screw ring 18. The movable screw ring 18 is rotatably connected to the surface of the ventilation chamber 6.

[0043] Through the above structural design, when single-lung ventilation is needed, the slider 17 is driven to rotate in the inner wall of the guide groove 16 by rotating the slider 17, and then the airway switching ring 19 can be driven to rotate by the slider 17. When the slider 17 is rotated to one end of the guide groove 16, the double-lung ventilation hole 20 is separated from the air hole 10 and the single-lung ventilation hole 21 is connected to the air hole 10, thereby completing the ventilation of one side of the single lung. When the slider 17 is rotated to the other end of the guide groove 16, the single-lung ventilation of the other lung can be completed. When the slider 17 is rotated to the middle of the guide groove 16 at ninety degrees, the double-lung ventilation of the patient can be started.

Claims

1. A novel double-lumen endotracheal tube, comprising an endotracheal tube (1), characterized in that: It also comprises a ventilation mechanism (2), a single-lung ventilation switching mechanism (3) and a fiber bronchoscope inspection tube (22), wherein one end of the tracheal tube (1) is connected to the ventilation mechanism (2) for supplying oxygen to the patient's lungs, the middle part of the ventilation mechanism (2) is connected to the single-lung ventilation switching mechanism (3) for controlling single-lung ventilation of the patient's lungs, and the surface of the tracheal tube is fixedly connected to the fiber bronchoscope inspection tube (22); The ventilation mechanism (2) comprises a tracheal fixing ring seat (4), a first threaded butt joint (5), a ventilation chamber (6), a sealing component, an air guide component and a ventilator butt joint component; one end of the tracheal cannula (1) is fixedly connected to the tracheal fixing ring seat (4); the surface of the tracheal fixing ring seat (4) is rotatably connected to the first threaded butt joint (5); and the surface of the first threaded butt joint (5) is threadedly connected to the ventilation chamber (6).

2. The novel double-lumen endotracheal tube according to claim 1 is characterized in that: The sealing assembly comprises a first sealing ring (7), a second sealing ring (8), a third sealing ring (12) and a fourth sealing ring (13); the first sealing ring (7) is fixedly connected to the middle of the ventilation chamber (6); the second sealing ring (8) is fixedly connected to the inner wall of the ventilation chamber (6); the third sealing ring (12) is fixedly connected to the inner wall of the ventilation chamber (6); and the fourth sealing ring (13) is fixedly connected to the inner wall of the ventilation chamber (6).

3. The novel double-lumen endotracheal tube according to claim 2 is characterized in that: The air guide assembly comprises an air guide ring (9), an air hole (10) and a ventilation cannula (11); the first sealing ring (7) and the second sealing ring (8) are provided with an air hole (10) in the middle; the air holes (10) are symmetrically provided on the surface of the air hole (10); the middle of the two air holes (10) are fixedly connected with a ventilation cannula (11); the ventilation cannula (11) is plugged into the middle of the tracheal cannula (1).

4. The novel double-lumen endotracheal tube according to claim 3 is characterized in that: The ventilator docking assembly comprises a second threaded docking joint (14) and a fixed screwing ring (15); the middle parts of the third sealing ring (12) and the fourth sealing ring (13) are rotatably connected to the second threaded docking joint (14); and the surface of the second threaded docking joint (14) is fixedly connected to the fixed screwing ring (15).

5. The novel double-lumen endotracheal tube according to claim 4 is characterized in that: The single-lung ventilation switching mechanism (3) comprises an airway switching ring (19), a double-lung ventilation hole (20), a single-lung ventilation hole (21) and an adjustment component. The middle parts of the second sealing ring (8) and the third sealing ring (12) are rotatably connected to the airway switching ring (19). The double-lung ventilation holes (20) are symmetrically opened on the surface of the airway switching ring (19). The two double-lung ventilation holes (20) correspond to the two air holes (10) one by one. The single-lung ventilation hole (21) is opened on the surface of the airway switching ring (19).

6. The novel double-lumen endotracheal tube according to claim 5 is characterized in that: The adjustment component comprises a guide groove (16), a slider (17) and a movable screw ring (18); the surface of the ventilation chamber (6) is provided with a guide groove (16) in a semi-circular shape of 180 degrees; the inner wall of the guide groove (16) is slidably connected with a slider (17); one end of the slider (17) is fixedly connected to the surface of the airway switching ring (19); one end of the slider (17) away from the airway switching ring (19) is fixedly connected with a movable screw ring (18); and the movable screw ring (18) is rotatably connected to the surface of the ventilation chamber (6).

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