Multifunctional intelligent metal tracheostomy tube inner tube device

Through the intelligently designed metal air-cut casing inner tube device, real-time monitoring and automatic adjustment of airway pressure is achieved, the risk of airway damage is reduced, and the safety and accuracy of airway management is improved. It is suitable for a variety of clinical scenarios.

CN120437451APending Publication Date: 2025-08-08SHANDONG FIRST MEDICAL UNIVERSITY FIRST AFFILIATED HOSPITAL (QIANFO MOUNTAIN HOSPITAL OF SHANDONG PROVINCE)
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Patent Information

Application Number
CN202510581927.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-07
Publication Date
2025-08-08

AI Technical Summary

Technical Problem

The traditional metal air-cut casing inner tube has poor adaptability to the ventilator and is complex in operation, which can easily cause airway damage. It lacks intelligent and multifunctional design, making it difficult to meet the needs of modern clinical practice for precision medicine.

Method used

A multi-functional intelligent metal air-cut casing inner tube device is designed, with a built-in intelligent air bag and pressure sensor, equipped with an automatic charging and deflation system and a wireless transmission module to realize real-time pressure monitoring and automatic adjustment, with acoustic and light alarm function, and improve antibacteriality through nano-silver coating.

Benefits of technology

It significantly improves the efficiency and safety of airway management in patients with air resection, reduces the incidence of complications, and provides a more reliable respiratory management plan, suitable for clinical scenarios such as emergency departments and intensive care units.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a multifunctional intelligent metal tracheostomy tube inner tube device which comprises an inner tube body, an intelligent closed air bag is arranged at the bottom of the inner tube body, and a pressure sensor is arranged in a connector of the intelligent closed air bag. According to the device, innovative material selection, structural design and intelligent function integration are adopted, the airway management efficiency and safety of a tracheostomy patient are remarkably improved, the complication occurrence rate is reduced, a more reliable solution is provided for respiratory tract management of a critical patient, and the device has wide market prospects and clinical application value and is worthy of popularization and application. The device is applied to clinical scenes such as emergency departments and intensive care units, has important clinical application value, can provide more accurate, safer and more comfortable treatment experience for critical patients, and has the advantages of improving the airway management efficiency and safety of tracheostomy patients and reducing the occurrence rate of complications.
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Description

Technical Field

[0001] The present invention relates to the field of medical technology, and in particular to a multifunctional intelligent metal tracheotomy cannula inner tube device. Background Art

[0002] Tracheotomy, abbreviated as "tracheotomy", is a surgery that makes a transverse incision between the tracheal cartilages to establish an artificial airway, allowing the patient to breathe through the new channel. It is an important emergency treatment technique used in the clinical treatment and rescue of critically ill patients with airway obstruction caused by various reasons. When the patient's condition stabilizes, the tracheostomy tube will be replaced from a plastic tube to a metal tube with a metal inner tube. The inner tube will be replaced every day to ensure the patency of the artificial airway. When the patient's condition changes or the condition requires ventilator-assisted breathing, the metal tracheostomy tube will be replaced with a plastic tracheostomy tube with a sealed airbag to correspond to the ventilator short tube interface and the airway closure. However, in actual application, the replacement of the tracheostomy tube will cause risks such as airway damage, poor oxygenation, aspiration, infection, and allergic reactions to the patient.

[0003] The traditional metal tracheostomy tube inner tube has problems such as poor compatibility with ventilators. Especially when it needs to be frequently replaced or connected to a ventilator, the operation is complicated and can easily cause airway damage. In addition, the traditional inner tube lacks intelligent and multifunctional design, and it is difficult to meet the needs of modern clinical precision medicine. The implementation of the multifunctional improved metal tracheostomy tube inner tube device of the present invention significantly improves the safety of replacing tracheal tubes and the effectiveness of airway management, reduces the incidence of complications, and provides a more reliable solution for the airway management of critically ill patients. This technology can be widely used in clinical scenarios such as emergency departments, intensive care units, respiratory departments, and neurosurgery departments, and has important clinical application value. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the purpose of the present invention is to provide a multifunctional intelligent metal tracheostomy cannula inner tube device, which has the advantages of improving the airway management efficiency and safety of tracheostomy patients and reducing the incidence of complications.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional intelligent metal tracheostomy tube inner tube device, comprising an inner tube body, an intelligent sealed airbag is arranged at the bottom of the inner tube body, a pressure sensor is built-in at the interface of the intelligent sealed airbag, and the pressure sensor monitors the pressure of the intelligent sealed airbag in real time and sends the data to the monitoring system via wireless transmission to ensure that the pressure of the intelligent sealed airbag is always within a safe range, an automatic inflation and deflation system is arranged on the outside of the inner tube body, the automatic inflation and deflation system is connected to the pressure sensor signal, and the automatic inflation and deflation system automatically adjusts the amount of gas in the intelligent sealed airbag through a micro air pump according to the data fed back by the pressure sensor. When the airway pressure increases, the system automatically releases part of the gas, and when the pressure decreases, the system replenishes Gas, ensure that the pressure of the intelligent sealed airbag is always maintained within the preset safety range, and the automatic inflation and deflation system sets the upper and lower pressure thresholds. When the pressure of the intelligent sealed airbag exceeds the safety range, the sound and light alarm is triggered immediately, and the alarm information is sent to the monitoring system through wireless transmission. The intelligent sealed airbag interface is integrated with a low-power Bluetooth or Wi-Fi module, which can transmit real-time pressure data, intelligent sealed airbag status and alarm information to the monitoring system. The outside of the inner tube body is provided with an outer tube body, and the surface of the outer tube body is fixedly connected with a fixing plate, and the fixing plate is elliptical. The surface of the inner tube body is connected with an airbag inflation interface, and the airbag inflation interface is connected with the intelligent sealed airbag. The end of the inner tube body away from the intelligent sealed airbag is fixedly connected with a multi-function interface.

[0006] As a preferred embodiment of the present invention, the surface of the fixing plate is fixedly connected to an annular magnetic plate, the surface of the fixing plate is fixedly connected to a positioning pin, the surface of the inner tube body is rotatably connected to a positioning ring, the surface of the positioning ring is provided with a notch, and the positioning ring is respectively fitted with the annular magnetic plate and the positioning pin.

[0007] As a preferred embodiment of the present invention, the surface of the fixing plate is provided with through openings, and the number of the through openings is two.

[0008] As a preferred embodiment of the present invention, the surface of the inner tube body is coated with a nano-silver antibacterial coating.

[0009] As a preferred embodiment of the present invention, the inner tube body, the outer tube body, the fixing plate, the positioning pin, the air bag interface and the multifunctional interface are all made of synthetic plastic material.

[0010] As a preferred embodiment of the present invention, the inner tube body and the outer tube body are bent 105 degrees as a whole.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This invention adopts innovative material selection, structural design and intelligent function integration, significantly improving the efficiency and safety of airway management for tracheostomy patients, reducing the incidence of complications, and providing a more reliable solution for airway management of critically ill patients. This device has broad market prospects and clinical application value. It is used in clinical scenarios such as emergency departments and intensive care units, and has important clinical application value, providing a more accurate, safe and comfortable treatment experience for critically ill patients. The automatic inflation and deflation system has the following advantages:

[0013] Pressure Monitoring and Signal Transmission: The built-in pressure sensor at the interface of the intelligent sealed airbag is always in operation, continuously and accurately monitoring the pressure value inside the airbag. Once the pressure value changes, the pressure sensor will quickly transmit the monitored pressure data in real time to the control unit of the automatic inflation and deflation system via wireless transmission technology. The control unit acts as the "brain" of the entire system, responsible for receiving and analyzing the data information from the pressure sensor;

[0014] Data analysis and command generation: After receiving the data from the pressure sensor, the control unit of the automatic inflation and deflation system will immediately compare and analyze it with the pre-set pressure safety range. When it is determined that the pressure inside the intelligent sealed airbag exceeds or falls below the preset safety range, the control unit will quickly generate the corresponding inflation and deflation instructions based on the established algorithm. For example, if the monitored airbag pressure is below the lower threshold, the control unit will generate an inflation instruction; if the pressure is above the upper threshold, it will generate a deflation instruction.

[0015] Inflation and deflation execution operation: As the executive component of the automatic inflation and deflation system, the micro air pump will immediately start the corresponding working mode after receiving the inflation and deflation command from the control unit. When receiving the inflation command, the micro air pump will operate quickly, sucking air from the outside, and accurately and efficiently delivering the air to the intelligent closed airbag through the gas pipeline connected to it, so that the amount of gas in the airbag increases and the pressure gradually rises. Conversely, when receiving the deflation command, the micro air pump will work in reverse to extract and discharge the excess gas in the airbag, reducing the pressure inside the airbag. Through such precise inflation and deflation operations, it is ensured that the pressure inside the intelligent closed airbag is always stably maintained within the preset safety range;

[0016] Alarm triggering and information feedback: The automatic inflation and deflation system is also equipped with a pressure upper and lower threshold protection mechanism. Once the pressure of the intelligent sealed airbag exceeds the preset safety range and cannot be restored to the normal range after the system attempts to adjust, the system will immediately trigger the sound and light alarm device, alerting medical staff with eye-catching flashing lights and loud alarm sounds. At the same time, the system will synchronously send the alarm information to the monitoring system through the wireless transmission module, so that medical staff can promptly understand the abnormal situation of the patient's tracheostomy tube and quickly take appropriate measures to ensure the patient's life safety.

[0017] The device has the advantages of improving the efficiency and safety of airway management for tracheotomy patients and reducing the incidence of complications.

[0018] 2. The present invention is provided with an annular magnetic sheet, a positioning pin, a positioning ring and a notch. When the operator needs to connect the outer tube body with the inner tube body, the operator slides the inner tube body into the outer tube body until the positioning ring fits with the annular magnetic sheet. When fitting, it is necessary to ensure that the notch on the surface of the positioning ring is aligned with the positioning pin so that the positioning ring and the annular magnetic sheet can fit together. Then the operator rotates the positioning ring 180 degrees so that the notch is no longer aligned with the positioning pin. At this time, the state of the positioning ring, the annular magnetic sheet and the positioning pin is as shown in the attached figure. Figure 3 As shown, at this time, the positioning pin limits the positioning ring, thereby preventing the positioning ring from separating from the annular magnetic sheet. The positioning ring is made of iron material, and the magnetic attraction between the positioning ring and the annular magnetic sheet is used to assist in fixing the position of the positioning ring at this time, thereby ensuring the stability of the fixation between the inner tube body and the outer tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the inner tube body of the present invention;

[0021] Figure 3 For the present invention Figure 1 A schematic diagram of the structure at center A;

[0022] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0023] In the figure: 1. Inner tube body; 2. Intelligent sealed airbag; 3. Outer tube body; 4. Fixing plate; 5. Airbag inflation interface; 6. Multi-function interface; 7. Ring magnetic sheet; 8. Positioning pin; 9. Positioning ring; 10. Notch; 11. Through port. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 4As shown, a multifunctional intelligent metal tracheostomy tube inner tube device includes an inner tube body 1, an intelligent closed airbag 2 is arranged at the bottom of the inner tube body 1, and a pressure sensor is built-in at the interface of the intelligent closed airbag 2. The pressure sensor monitors the pressure of the intelligent closed airbag 2 in real time and sends the data to the monitoring system through wireless transmission to ensure that the pressure of the intelligent closed airbag 2 is always within a safe range. An automatic inflation and deflation system is arranged on the outside of the inner tube body 1, and the automatic inflation and deflation system is connected to the pressure sensor signal. The automatic inflation and deflation system automatically adjusts the amount of gas in the intelligent closed airbag 2 through a micro air pump based on the data fed back by the pressure sensor. When the airway pressure increases, the system automatically releases part of the gas. When the pressure decreases, the system replenishes the gas to ensure the intelligent closed airbag 2 is safe. The pressure of the airbag 2 is always maintained within a preset safety range, and the automatic inflation and deflation system sets upper and lower pressure thresholds. When the pressure of the intelligent sealed airbag 2 exceeds the safety range, an audible and visual alarm is immediately triggered, and the alarm information is sent to the monitoring system via wireless transmission. The interface of the intelligent sealed airbag 2 is integrated with a low-power Bluetooth or Wi-Fi module, which can transmit real-time pressure data, the status of the intelligent sealed airbag 2 and alarm information to the monitoring system. An outer tube body 3 is provided on the outside of the inner tube body 1, and a fixing plate 4 is fixedly connected to the surface of the outer tube body 3, and the fixing plate 4 is elliptical. The surface of the inner tube body 1 is connected to an airbag inflation interface 5, and the airbag inflation interface 5 is connected to the intelligent sealed airbag 2. The end of the inner tube body 1 away from the intelligent sealed airbag 2 is fixedly connected to a multi-function interface 6.

[0026] refer to Figure 3 The surface of the fixing plate 4 is fixedly connected to an annular magnetic plate 7, the surface of the fixing plate 4 is fixedly connected to a positioning pin 8, the surface of the inner tube body 1 is rotatably connected to a positioning ring 9, the surface of the positioning ring 9 is provided with a notch 10, and the positioning ring 9 is respectively fitted with the annular magnetic plate 7 and the positioning pin 8.

[0027] As a technical optimization solution of the present invention, through the arrangement of the annular magnetic sheet 7, the positioning pin 8, the positioning ring 9 and the notch 10, when the operator needs to connect the outer tube body 3 with the inner tube body 1, the operator slides the inner tube body 1 into the outer tube body 3 until the positioning ring 9 fits with the annular magnetic sheet 7. When fitting, it is necessary to ensure that the notch 10 on the surface of the positioning ring 9 is aligned with the positioning pin 8 so that the positioning ring 9 can fit with the annular magnetic sheet 7. Then the operator rotates the positioning ring 9 one hundred and eighty degrees so that the notch 10 is no longer aligned with the positioning pin 8. At this time, the status of the positioning ring 9, the annular magnetic sheet 7 and the positioning pin 8 is as shown in the attached figure. Figure 3As shown, at this time, the positioning pin 8 limits the positioning ring 9, thereby preventing the positioning ring 9 from separating from the annular magnetic sheet 7. The positioning ring 9 is made of iron material, and the magnetic attraction between the positioning ring 9 and the annular magnetic sheet 7 is used to assist in fixing the position of the positioning ring 9 at this time, thereby ensuring the stability of the fixation between the inner tube body 1 and the outer tube body 3. The above-mentioned positioning pin 8, positioning ring 9 and notch 10 are all existing common technologies and are common knowledge known to people in this field. This application will not go into details.

[0028] refer to Figure 3 The surface of the fixing plate 4 is provided with two through openings 11 .

[0029] As a technical optimization solution of the present invention, through the setting of the through-hole 11, the operator can wear the fixing plate 4 on the patient's neck through the fixing belt, thereby assisting in fixing the outer tube body 3. The above-mentioned fixing belt is an existing common technology and is common knowledge among people in this field. This application will not go into details.

[0030] refer to Figure 2 The surface of the inner tube body 1 is coated with a nano-silver antibacterial coating.

[0031] As a technical optimization solution of the present invention, by coating the surface of the inner tube body 1 with a nano-silver antibacterial coating, the growth of bacteria and fungi can be effectively inhibited, reducing the risk of infection. Nano-silver particles are used as the main antibacterial component. Nano-silver has broad-spectrum antibacterial properties and can effectively inhibit the growth of bacteria such as Staphylococcus aureus and Pseudomonas aeruginosa and fungi such as Candida albicans. Its mechanism of action is to destroy the cell membrane and DNA structure of microorganisms by releasing silver ions, thereby achieving a bactericidal effect. Nano-silver coating technology realizes the efficient antibacterial and antifungal functions of the surface of the inner tube body 1, significantly reducing the risk of infection in tracheostomy patients.

[0032] refer to Figure 1 The inner tube body 1, the outer tube body 3, the fixing plate 4, the positioning pin 8, the air bag interface 5 and the multifunctional interface 6 are all made of synthetic plastic material.

[0033] As a technical optimization solution of the present invention, the inner tube body 1, outer tube body 3, fixing plate 4, positioning pin 8, airbag interface 5, and multifunctional interface 6 are all made of synthetic plastic material. The synthetic plastic material is a high-strength medical plastic material with excellent mechanical strength and biocompatibility. It also has the characteristics of lightweight structure and easy disinfection. It can significantly improve the efficiency and safety of airway management for tracheotomy patients. The inner tube body 1 is lightweight and has a smooth surface to reduce irritation to the tracheal mucosa. The front end of the inner tube body 1 is designed with a multifunctional interface 6, which can be quickly connected to the ventilator short tube or breathing circuit tube to achieve seamless switching and ensure the effectiveness of mechanical ventilation.

[0034] refer to Figure 1 The inner tube body 1 and the outer tube body 3 are bent 105 degrees as a whole.

[0035] As a technical optimization solution of the present invention, the inner tube body 1 and the outer tube body 3 are bent 105 degrees as a whole, which conforms to the physiological structure of the human body. The trachea has a certain physiological curvature in the human neck. The inner tube body 1 and the outer tube body 3 are bent 105 degrees as a whole to better adapt to the natural shape of the human trachea, so that the inner tube device of the tracheotomy tube can better fit the direction of the human trachea after insertion, reducing the pressure and irritation on the tracheal mucosa due to shape mismatch, improving the patient's comfort, and also reducing the risk of damage to the trachea.

[0036] The working principle and usage process of the present invention: When in use, the intelligent sealed airbag 2 adopts low-pressure and high-compliance materials, which can automatically adjust the inflation volume according to the airway pressure to avoid excessive pressure on the tracheal wall. The operator inserts the inner tube body 1 into the outer tube body 3, and then connects the outer tube body 3 with the inner tube body 1. Then the operator can inflate the intelligent sealed airbag 2 by opening the airbag interface 5. When the intelligent sealed airbag 2 is inflated, the intelligent sealed airbag 2 will be placed at the bottom of the outer tube body 3 and seal the trachea. The pressure sensor not shown monitors the pressure of the intelligent sealed airbag 2 in real time and sends the data to the monitoring system through wireless transmission to ensure that the pressure of the intelligent sealed airbag 2 is always within a safe range. The outside of the inner tube body 1 is provided with an automatic inflation and deflation system not shown. The automatic inflation and deflation system is connected to the pressure sensor signal, and the automatic inflation and deflation system is based on the feedback from the pressure sensor. Data, the system automatically adjusts the amount of gas in the intelligent closed airbag 2 through a micro air pump. When the airway pressure increases, the system automatically releases part of the gas. When the pressure decreases, the system replenishes the gas to ensure that the pressure of the intelligent closed airbag 2 is always maintained within the preset safety range, and the automatic inflation and deflation system sets upper and lower pressure thresholds. When the pressure of the intelligent closed airbag 2 exceeds the safety range, an audible and visual alarm is immediately triggered, and the alarm information is sent to the monitoring system through wireless transmission. The low-power Bluetooth or Wi-Fi module is not shown at the interface of the intelligent closed airbag 2, which can transmit real-time pressure data, the status of the intelligent closed airbag 2 and the alarm information to the monitoring system. The multifunctional interface 6 on the surface of the inner tube body 1 adopts an internationally accepted standard size design to ensure that it can adapt to various types of ventilator short tubes, including equipment of different brands and models, thereby improving the versatility and convenience of clinical applications;

[0037] The airbag inflation port (airbag opening interface 5) is used to inflate the intelligent sealed airbag 2 during initial setup, bringing the airbag to a certain level of fullness to seal the trachea. The automatic inflation and deflation system, on the other hand, automatically adjusts the airbag's internal gas volume during use based on the pressure data from the intelligent sealed airbag 2 monitored by the pressure sensor, maintaining the airbag pressure within a preset safety range. While these two functions differ, they work together to ensure the proper operation of the intelligent sealed airbag 2. The device primarily relies on the automatic inflation and deflation system for inflation and deflation. However, in exceptional circumstances, such as when the automatic inflation and deflation system malfunctions or during initial installation, manual inflation can be performed via the airbag opening interface 5 to ensure the proper operation of the intelligent sealed airbag 2. The power source of the automatic inflation and deflation system is a micro air pump. This power source can be a built-in rechargeable battery or an external power adapter to ensure the micro air pump operates continuously and stably, enabling the automatic inflation and deflation of the intelligent sealed airbag 2. The device also enables data transmission even when the patient is not using ECG monitoring. The interface of the intelligent sealed airbag 2 integrates a low-power Bluetooth or Wi-Fi module, which can transmit real-time pressure data, intelligent sealed airbag 2 status, and alarm information via Bluetooth to nearby mobile devices such as a tablet at the nurse's station or a doctor's mobile phone, or via Wi-Fi to the hospital's central monitoring system or a dedicated medical information management system. This allows medical staff to obtain timely information about the intelligent sealed airbag 2, even without relying on ECG monitoring equipment, to monitor and manage the patient's airway condition. The stator 4 is the part that secures the outer tube body 3 to the patient's body, and has sufficient space to accommodate a micro-air pump. Placing the micro-air pump here not only utilizes the space of the stator 4 without occupying additional space within the inner or outer tubes, but also facilitates integration and connection of the micro-air pump with other components of the automatic inflation and deflation system, such as the pressure sensor and control circuit, improving the compactness and stability of the overall structure. Furthermore, the stator 4 is located on the outside of the tracheostomy tube, allowing medical staff to quickly access the micro-air pump when needed for troubleshooting and repair. The micro-air pump described above is a common technology and will not be described in detail in this application. The micro-air pump is not shown.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional intelligent metal tracheotomy cannula inner tube device, comprising an inner tube body (1), characterized in that: The bottom of the inner tube body (1) is provided with an intelligent sealed airbag (2), and a pressure sensor is built into the interface of the intelligent sealed airbag (2), and the pressure sensor monitors the pressure of the intelligent sealed airbag (2) in real time and sends the data to the monitoring system through wireless transmission to ensure that the pressure of the intelligent sealed airbag (2) is always within a safe range. The outside of the inner tube body (1) is provided with an automatic inflation and deflation system, and the automatic inflation and deflation system is connected to the pressure sensor signal. The automatic inflation and deflation system automatically adjusts the amount of gas in the intelligent sealed airbag (2) through a micro air pump according to the data fed back by the pressure sensor. When the airway pressure increases, the system automatically releases part of the gas. When the pressure decreases, the system replenishes the gas to ensure that the pressure of the intelligent sealed airbag (2) is always maintained within a preset safe range. The automatic inflation and deflation system The upper and lower pressure thresholds are set. When the pressure of the intelligent sealed airbag (2) exceeds the safe range, an audible and visual alarm is immediately triggered, and the alarm information is sent to the monitoring system through wireless transmission. The interface of the intelligent sealed airbag (2) is integrated with a low-power Bluetooth or Wi-Fi module, which can transmit real-time pressure data, the status of the intelligent sealed airbag (2) and the alarm information to the monitoring system. The outer tube body (3) is provided with an outer tube body (3). The surface of the outer tube body (3) is fixedly connected with a fixing plate (4). The fixing plate (4) is elliptical. The surface of the inner tube body (1) is connected with an airbag interface (5). The airbag interface (5) is connected with the intelligent sealed airbag (2). The end of the inner tube body (1) away from the intelligent sealed airbag (2) is fixedly connected with a multifunctional interface (6).

2. The multifunctional intelligent metal tracheotomy cannula inner tube device according to claim 1, characterized in that: The surface of the fixing plate (4) is fixedly connected to an annular magnetic plate (7), the surface of the fixing plate (4) is fixedly connected to a positioning pin (8), the surface of the inner tube body (1) is rotatably connected to a positioning ring (9), the surface of the positioning ring (9) is provided with a notch (10), and the positioning ring (9) is respectively fitted with the annular magnetic plate (7) and the positioning pin (8).

3. The multifunctional intelligent metal tracheotomy cannula inner tube device according to claim 1, characterized in that: The surface of the fixing plate (4) is provided with through openings (11), and the number of the through openings (11) is two.

4. The multifunctional intelligent metal tracheotomy cannula inner tube device according to claim 1, characterized in that: The surface of the inner tube body (1) is coated with a nano-silver antibacterial coating.

5. The multifunctional intelligent metal tracheotomy cannula inner tube device according to claim 2, characterized in that: The inner tube body (1), the outer tube body (3), the fixing plate (4), the positioning pin (8), the air bag interface (5) and the multifunctional interface (6) are all made of synthetic plastic material.

6. The multifunctional intelligent metal tracheotomy cannula inner tube device according to claim 1, characterized in that: The inner tube body (1) and the outer tube body (3) are bent 105 degrees as a whole.