A type of endotracheal tube

By designing an adjustable-depth endotracheal tube, the problems of traditional intubation being unable to adjust depth and being unstable in fixation are solved, achieving flexible adjustment and stable intubation results, suitable for clinical emergency and anesthesia scenarios.

CN224506052UActive Publication Date: 2026-07-17LANGFANG PEOPLES HOSPITAL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LANGFANG PEOPLES HOSPITAL
Filing Date
2025-03-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional endotracheal intubation cannot adjust the intubation depth according to the patient's airway anatomy, resulting in intubation that is too deep or too shallow, affecting ventilation, and the fixation method is unstable and prone to displacement.

Method used

An adjustable-depth endotracheal tube was designed, which adjusts the tube depth through a sliding collar and scale markings, and uses Velcro and anti-slip pads for fixing to improve stability. The tube includes scale markings, a sliding collar, a locking buckle, an airbag, and an inflation device.

Benefits of technology

It enables flexible adjustment of intubation depth based on individual patient differences, avoiding airway damage, improving intubation stability, reducing the risk of displacement, and is suitable for clinical emergency and anesthesia scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model belongs to the field of medical device technology, specifically a endotracheal intubation tube. Addressing the problems of fixed intubation tubes affecting ventilation, poor stability, and easy displacement mentioned in the background art, the present invention proposes the following solution: A catheter body is included, with an air bag fixedly connected to the outer wall of one end of the catheter body, and a pressure regulating valve is provided on the outer wall of the air bag at one end. This utility model incorporates a depth adjustment device; by sliding a sliding collar, the scale on the positioning hole can be controlled, allowing for flexible adjustment of the intubation depth according to individual patient differences, avoiding excessively deep or shallow intubation, thus preventing impaired ventilation and airway damage. A fixing device is also included; Velcro straps one and two can be fastened to the patient's face, and an anti-slip pad is fitted to the patient's face, improving the stability of the intubation and reducing the risk of displacement. The overall structure is simple, easy to operate, and suitable for various scenarios such as clinical emergency care, anesthesia, and intensive care.
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Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a tracheal intubation tube. Background Technology

[0002] Endotracheal intubation is a method of inserting a specially designed endotracheal tube through the mouth or nose and through the glottis into the trachea or bronchus. It provides optimal conditions for airway patency, ventilation and oxygen supply, and airway suction, and is an important measure for rescuing patients with respiratory dysfunction.

[0003] Endotracheal intubation is a commonly used medical device in clinical emergency care and anesthesia to establish an artificial airway and ensure unobstructed breathing for patients. Traditional endotracheal tubes are usually disposable plastic tubes with fixed length and curvature, making them unadjustable according to the patient's airway anatomy. In practice, due to individual differences in airway length and curvature, a fixed tube design may result in intubation that is too deep or too shallow, affecting ventilation and even causing airway damage. Furthermore, traditional tubes are often secured with tape, which is unstable and prone to displacement. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable-depth endotracheal tube that can flexibly adjust the insertion depth according to the patient's airway anatomy and improve the fixation stability of the tube.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An endotracheal cannula includes a cannula body, an air bag fixedly connected to the outer wall of one end of the cannula body, an air pressure regulating valve provided on the outer wall of one end of the air bag, an inflation device provided on the outer wall of the other end of the air bag, and a depth adjustment device and a fixing device respectively provided on the outer wall of the cannula body.

[0007] Preferably, the inflation device includes a one-way valve fixedly connected to the outer wall of the other end of the airbag, and a three-way valve fixedly connected to the outer wall of one end of the one-way valve.

[0008] Preferably, an inflation tube is fixedly connected to the inner wall of one end of the tee, and an outer tube is fixedly connected to the inner wall of the other side of the tee.

[0009] Preferably, the depth adjustment device includes a scale mark on the outer wall of the catheter body, a sliding collar slidably connected to the outer wall of the catheter body, and a locking buckle fixedly connected to the outer wall of the sliding collar.

[0010] Preferably, the end of the locking buckle is pressed against the outer wall of the sliding collar.

[0011] Preferably, the fixing device includes a connecting sleeve adhered to the outer wall of the conduit body, an anti-slip pad fixedly connected to the bottom outer wall of the connecting sleeve, and Velcro fasteners one and two respectively disposed on the outer walls of the two sides of the anti-slip pad.

[0012] Preferably, the top outer wall of the sliding collar has a positioning hole.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The endotracheal tube in this design is equipped with a depth adjustment device. By sliding the sliding collar, the scale on the positioning hole can be controlled, and the insertion depth can be flexibly adjusted according to individual patient differences to avoid insertion that is too deep or too shallow, thus avoiding affecting the ventilation effect and causing airway damage.

[0015] 2. The endotracheal tube designed in this way is equipped with a fixation device. Velcro 1 and Velcro 2 can be tied to the patient's face and the anti-slip pad is attached to the patient's face, which improves the stability of the tube and reduces the risk of displacement. The overall structure is simple and easy to operate, and it is suitable for various scenarios such as clinical emergency, anesthesia and intensive care. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an endotracheal intubation tube proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the inflation device for endotracheal intubation proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of a endotracheal intubation depth adjustment device proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of a tracheal intubation fixation device proposed in this utility model.

[0020] In the diagram: 1. Tube body; 2. Airbag; 3. Pressure regulating valve; 4. Inflation device; 41. T-joint; 42. One-way valve; 43. Inflation tube; 44. External tube; 5. Depth adjustment device; 51. Scale marking; 52. Sliding collar; 53. Locking buckle; 6. Fixing device; 61. Connecting sleeve; 62. Anti-slip pad; 63. Velcro 1; 64. Velcro 2; 7. Positioning hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1, refer to Figure 1 An endotracheal cannula includes a cannula body 1, an air bag 2 fixedly connected to the outer wall of one end of the cannula body 1, an air pressure regulating valve 3 provided on the outer wall of one end of the air bag 2, an inflation device 4 provided on the outer wall of the other end of the air bag 2, and a depth adjustment device 5 and a fixing device 6 respectively provided on the outer wall of the cannula body 1.

[0023] In this embodiment, a depth adjustment device 5 is provided. By sliding the sliding collar 52, the scale on the positioning scale mark 51 of the positioning hole 7 can be controlled. The insertion depth can be flexibly adjusted according to individual patient differences to avoid the insertion being too deep or too shallow, thus avoiding affecting the ventilation effect and avoiding airway damage.

[0024] Example 2, refer to Figures 2-4 An endotracheal intubation device 4 includes a one-way valve 42 fixedly connected to the outer wall of the other end of the airbag 2, a three-way valve 41 fixedly connected to the outer wall of one end of the one-way valve 42, an inflation tube 43 fixedly connected to the inner wall of one end of the three-way valve 41, and an outer tube 44 fixedly connected to the inner wall of one side of the three-way valve 41.

[0025] The depth adjustment device 5 includes a scale mark 51 set on the outer wall of the catheter body 1, a sliding collar 52 slidably connected to the outer wall of the catheter body 1, and a locking buckle 53 fixedly connected to the outer wall of the sliding collar 52.

[0026] The fixing device 6 includes a connecting sleeve 61 that is adhered to the outer wall of the conduit body 1, an anti-slip pad 62 that is fixedly connected to the bottom outer wall of the connecting sleeve 61, and Velcro 63 and Velcro 64 that are respectively provided on the outer walls of both sides of the anti-slip pad 62.

[0027] In this embodiment, a fixing device 6 is provided. Velcro 63 and Velcro 64 can be tied to the patient's face and the anti-slip pad 62 is attached to the patient's face, which improves the stability of intubation and reduces the risk of displacement. The overall structure is simple and easy to operate, and it is suitable for various scenarios such as clinical emergency, anesthesia and intensive care.

[0028] Reference Figure 3 The end of the locking buckle 53 is pressed against the outer wall of the sliding collar 52. One end of the locking buckle 53 is connected to the sliding collar 52, and the other end forms an interference fit with the sliding collar 52, so that a certain pressure is formed between the locking buckle 53 and the catheter body 1, preventing the sliding collar 52 from sliding freely on the outer wall of the catheter body 1.

[0029] Reference Figure 3 The sliding collar 52 has a positioning hole 7 on its top outer wall. The positioning hole 7 is directly aligned with the scale line on the scale mark 51. The insertion depth can be determined by observing the scale line inside the positioning hole 7.

[0030] Working principle: Before intubation, medical staff pre-adjust the position of the sliding collar 52 according to the length of the patient's airway and determine the intubation depth through the scale mark 51. Then, the tube body 1 is inserted into the patient's airway through the mouth or nose. Next, air is inflated into the cuff 2 through the inflation tube 43. The cuff 2 can be pressed to assist ventilation during subsequent surgery, and the air pressure is adjusted through the air pressure regulating valve 3. Finally, the lengths of Velcro 1 63 and Velcro 2 64 are adjusted so that they are tied to the patient's face, and the anti-slip pad 62 is attached to the patient's face to ensure that the intubation is stable.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tracheal tube comprising a catheter body (1), characterized in that, An airbag (2) is fixedly connected to the outer wall of one end of the catheter body (1), and an air pressure regulating valve (3) is provided on the outer wall of one end of the airbag (2). An inflation device (4) is provided on the outer wall of the other end of the airbag (2), and a depth adjustment device (5) and a fixing device (6) are respectively provided on the outer wall of the catheter body (1).

2. A tracheal tube according to claim 1, wherein, The inflation device (4) includes a one-way valve (42) fixedly connected to the outer wall of the other end of the airbag (2) and a three-way valve (41) fixedly connected to the outer wall of one end of the one-way valve (42).

3. A tracheal tube according to claim 2, wherein, An air inlet pipe (43) is fixedly connected to the inner wall of one end of the tee (41), and an outer pipe (44) is fixedly connected to the inner wall of one side of the tee (41).

4. The tracheal tube of claim 1, wherein, The depth adjustment device (5) includes a scale mark (51) on the outer wall of the catheter body (1), a sliding collar (52) slidably connected to the outer wall of the catheter body (1), and a locking buckle (53) fixedly connected to the outer wall of the sliding collar (52).

5. A tracheal tube according to claim 4, wherein, The end of the locking buckle (53) is pressed against the outer wall of the sliding collar (52).

6. The tracheal tube of claim 1, wherein, The fixing device (6) includes a connecting sleeve (61) bonded to the outer wall of the conduit body (1), an anti-slip pad (62) fixedly connected to the bottom outer wall of the connecting sleeve (61), and Velcro 1 (63) and Velcro 2 (64) respectively set on the outer walls of both sides of the anti-slip pad (62).

7. A tracheal tube according to claim 4, wherein The sliding collar (52) has a positioning hole (7) on its top outer wall.