Sputum suction operation training device

By introducing a sensor timing and alarm function into the sputum suction training device, the problem of the lack of real-time monitoring in existing devices has been solved, thus achieving standardized and hygienic sputum suction operations and improving training effectiveness and safety.

CN122050221APending Publication Date: 2026-05-15THE FIRST AFFILIATED HOSPITAL OF WENZHOU MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
THE FIRST AFFILIATED HOSPITAL OF WENZHOU MEDICAL UNIV
Filing Date
2026-04-09
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing suction training devices lack real-time monitoring and feedback on key steps such as suction operation duration and insertion depth, making it difficult to standardize the operation process. Furthermore, the simulated trachea cannot be disassembled and replaced, posing hygiene and safety hazards.

Method used

A suctioning operation training device was designed, which includes a simulated trachea, a timing sensor, an alarm sensor, an injection device, and a suction device. The timing sensor displays the suctioning time, the alarm sensor provides an early warning of the suctioning depth, and the simulated trachea is detachable for cleaning and disinfection to avoid cross-contamination.

Benefits of technology

It improves the accuracy and standardization of sputum suctioning procedures, reduces complications caused by improper sputum suctioning, enhances hygiene and safety, provides intuitive training feedback and simulates real-life scenarios, reduces costs, and improves teaching effectiveness.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a sputum suction operation training device, and relates to the technical field of medical equipment, the sputum suction operation training device comprises a simulation trachea, an induction timing part, an induction alarm part, an injection part and a sputum suction part, the bottom of the simulation trachea is provided with a bottom plate used for sealing the bottom of the simulation trachea, and the induction alarm part is fixed on the upper part of the bottom plate; the simulation trachea is used for being inserted through a simulation nasal cavity or a simulation oral cavity of the trachea cannula model and entering and being fixed in the simulation trachea through a simulation throat, the induction timing part is used for being arranged on one side of one end, located outside the simulation nasal cavity or the simulation oral cavity, of the simulation trachea, and the injection part is used for injecting simulation sputum into the simulation trachea. The sputum suction part is used for stretching into the simulated trachea to suck sputum. According to the sputum suction operation training device, the accuracy, normalization and training effect of sputum suction operation training are improved, and sanitation and safety are improved.
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Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a suctioning operation training device. Background Technology

[0002] Suctioning is a commonly used nursing procedure in clinical practice. It is an important method to prevent airway obstruction and aspiration. It mainly refers to the suctioning of secretions from the respiratory tract through the mouth, nose, or artificial airway, thereby maintaining airway patency and preventing complications such as atelectasis, aspiration pneumonia, and suffocation. Effective suctioning is crucial for patient resuscitation and treatment outcomes. Correct and thorough suctioning can not only prevent complications but can even save lives. Therefore, it is essential to standardize suctioning training, clarify precautions for suctioning critically ill patients, strengthen training on related theoretical knowledge, and enable medical staff to better master suctioning techniques, timing, and how to judge sputum volume, viscosity, and effectiveness by the number of suctioning cycles required.

[0003] Studies have shown that the depth of suctioning directly affects airway clearance; too shallow a suctioning attempt fails to effectively remove secretions, while too deep a suctioning attempt can easily lead to airway mucosal damage, bleeding, and other adverse events. The duration of each suctioning session directly impacts the occurrence of potential complications or harms. Existing suctioning training devices lack real-time monitoring and feedback on key steps such as suctioning duration and insertion depth, making it difficult to effectively standardize the procedure and limiting training effectiveness. Furthermore, existing suctioning training devices often employ an integrated simulated trachea structure fixed to the model body, which has several shortcomings. The simulated trachea cannot be disassembled or replaced, and long-term use can lead to the accumulation of dirt and difficulty in thorough cleaning and disinfection, posing hygiene and safety hazards. Summary of the Invention

[0004] To address the above technical problems, this invention provides a suctioning operation training device, which improves the accuracy, standardization, and effectiveness of suctioning operation training, and enhances hygiene and safety.

[0005] To achieve the above objectives, the present invention provides the following solution: This invention provides a suctioning operation training device, including a simulated trachea, a timing sensor, an alarm sensor, an injection component, and a suctioning component. The bottom of the simulated trachea is provided with a base plate for sealing its bottom. The alarm sensor is fixed to the upper part of the base plate. The simulated trachea is inserted through a simulated nasal cavity or simulated oral cavity of a tracheal intubation model, and enters and is fixed in the simulated trachea through a simulated pharynx. The timing sensor is located on one side of the simulated trachea located outside the simulated nasal cavity or simulated oral cavity. The injection component is used to inject simulated sputum into the simulated trachea. The suctioning component is used to insert into the simulated trachea to suction sputum.

[0006] Preferably, the simulated trachea includes a flexible tube and a bladder. The bladder is fixedly sleeved on the outer side of the lower part of the flexible tube. A gas channel is provided in the side wall of the flexible tube. One end of the gas channel is connected to the bladder, and the other end of the gas channel is connected to an inflation connector. After the bladder is inflated, it can fit against the inner wall of the simulated trachea. The inner wall of the flexible tube is smooth or has multiple protrusions in the lower part of the inner wall. The flexible tube with a smooth inner wall is used to simulate a smooth trachea, and the flexible tube with multiple protrusions in the lower part of the inner wall is used to simulate a trachea with phlegm crusts on the inner wall.

[0007] Preferably, the device further includes an endotracheal tube for insertion into the simulated trachea, wherein the air bladder on the lower outer side of the endotracheal tube, after inflation, can fit against the inner wall of the simulated trachea, and the suctioning component is used to extend into the endotracheal tube and through its bottom into the simulated trachea to suction sputum.

[0008] Preferably, it also includes multiple containers for holding simulated sputum, wherein the viscosity and color of the simulated sputum held in the multiple containers are different from each other.

[0009] Preferably, the holding component includes a transparent bottle body and a bottle cap. The upper outer side of the transparent bottle body is provided with an external thread, and the inner wall of the bottle cap is provided with an internal thread that matches the external thread. The bottle cap is threadedly installed on the upper part of the transparent bottle body.

[0010] Preferably, the external part of the sensing alarm component is provided with a waterproof protective film.

[0011] Preferably, the sensing timing component is an infrared sensing timer.

[0012] Preferably, the sensing alarm component is a vibration sensing alarm, which has a light alarm function.

[0013] Preferably, the injection component includes a syringe and an extension tube, one end of the extension tube being sealed and connected to the liquid outlet end of the syringe, and the other end of the extension tube being used to extend into the simulated trachea.

[0014] Preferably, the suctioning component is a suction tube.

[0015] The present invention achieves the following technical effects compared to the prior art: The suctioning training device of this invention includes a simulated trachea, a timing sensor, an alarm sensor, an injection component, and a suction component. The simulated trachea has a base plate at its bottom for sealing. The alarm sensor is fixed to the upper part of the base plate. The timing sensor is positioned on one side of the simulated trachea located outside the simulated nasal cavity or oral cavity. The timing sensor visually displays the suctioning time. If the suction component reaches the bottom, it triggers the alarm sensor, providing an early warning of suctioning depth and indicating improper operation. This standardizes the trainee's suctioning technique, improving the accuracy, standardization, and effectiveness of the training. It effectively corrects improper suctioning methods, reduces complications caused by improper suctioning, and lays a solid foundation for trainees to enter clinical practice and work, thus ensuring medical safety. The simulated trachea in this invention is an independent component that works in conjunction with the simulated trachea of ​​the endotracheal intubation model. After use, it can be disassembled, cleaned, disinfected, or replaced separately, avoiding cross-contamination and improving hygiene and safety. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram illustrating the use of the simulated trachea and endotracheal tube model in the suction operation training device provided by the present invention. Figure 2 A schematic diagram illustrating the combined use of the simulated trachea, endotracheal tube, and endotracheal tube model in the suction operation training device provided by the present invention. Figure 3 A schematic diagram of a tracheal intubation model used in conjunction with the suctioning operation training device provided by the present invention; Figure 4 This is a schematic diagram of the structure of a simulated trachea with a smooth inner wall in the suction operation training device provided by the present invention; Figure 5 for Figure 4 A magnified view of a section at point A in the middle; Figure 6 A schematic diagram of the structure of a simulated trachea with multiple protrusions on the lower part of the inner wall of the suction operation training device provided by the present invention; Figure 7 This is a schematic diagram of the endotracheal tube structure in the suction operation training device provided by the present invention. Figure 8 This is a schematic diagram of the structure of the holding component in the suction operation training device provided by the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Flexible tube body; 2. Bag body; 3. Base plate; 4. Sensor alarm component; 5. Waterproof protective membrane; 6. Protrusion; 7. Endotracheal tube; 8. Air bag; 9. Sensor timing component; 10. Transparent bottle body; 11. Bottle cap; 12. Endotracheal tube model; 121. Model body; 122. Simulated oral cavity; 123. Simulated nasal cavity; 124. Simulated pharynx; 125. Simulated trachea; 126. Simulated bronchus; 127. Simulated lung lobe. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The purpose of this invention is to provide a suctioning operation training device that improves the accuracy, standardization, and effectiveness of suctioning operation training, and enhances hygiene and safety.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-8 As shown, this embodiment provides a suctioning operation training device, including a simulated trachea, a timing sensor 9, an alarm sensor 4, an injection component, and a suctioning component. The bottom of the simulated trachea is provided with a base plate 3 for sealing its bottom. The alarm sensor 4 is fixed to the upper part of the base plate 3. The simulated trachea is used to be inserted through the simulated nasal cavity 123 or simulated oral cavity 122 of the tracheal intubation model 12, and enters and is fixed in the simulated trachea 125 through the simulated pharynx 124. The timing sensor 9 is used to be set on one side of the simulated trachea located outside the simulated nasal cavity 123 or simulated oral cavity 122. The injection component is used to inject simulated sputum into the simulated trachea. The suctioning component is used to insert into the simulated trachea to suction sputum.

[0023] In this embodiment, the suctioning time can be displayed intuitively by using a sensor timing component 9. If the suctioning component reaches the bottom, it can trigger the sensor alarm component 4 to provide an early warning of suctioning depth, i.e., to warn against non-standard operation, thereby standardizing the trainee's suctioning operation, improving the accuracy, standardization, and training effect of suctioning operation training, effectively improving improper suctioning methods, reducing the occurrence of complications caused by improper suctioning, laying a solid foundation for trainees to enter clinical time and work, and thus ensuring medical safety. In this embodiment, the simulated trachea is used as an independent component in conjunction with the simulated trachea 125 of the endotracheal intubation model 12. After use, it can be disassembled, cleaned, disinfected, or replaced separately to avoid cross-contamination and improve hygiene and safety.

[0024] The suctioning training device in this embodiment has excellent auxiliary teaching effects. Specifically, firstly, it assists teachers in teaching: breaking away from traditional suctioning experimental teaching, it allows teachers to demonstrate more objective and specific intubation depth and suctioning time during classroom demonstrations. Simultaneously, it can further demonstrate suctioning techniques, showing how to completely remove sputum, allowing students to visually experience and enhance their understanding, facilitating further practical application. Secondly, it assists students in practice: students can practice suctioning techniques based on their understanding of sputum formation. During practice, the model's timing and alarm functions can visually warn students of operational errors, facilitating correction. Repeated practice using the model helps students develop muscle memory, enabling them to accurately control the suctioning technique and ensuring safety in clinical practice. Thirdly, it assists in assessment: It makes assessments more objective and improves the accuracy of evaluations.

[0025] The suctioning training device in this embodiment is small and lightweight, and can be used in conjunction with the endotracheal intubation model 12, nursing mannequin, etc. for practice. The simple structure and components make maintenance relatively easy and reduce costs. The materials used are low-cost and easy to promote. At the same time, all materials used have been strictly screened to ensure that they are non-toxic, harmless, and meet relevant standards. Safety has been fully considered in the design, such as avoiding the use of sharp edges or overly complex structures, to ensure the safety of trainees during practice.

[0026] Specifically, the simulated trachea includes a flexible tube 1 and a bladder 2. The bladder 2 is fixedly sleeved on the outer side of the lower part of the flexible tube 1. A gas channel is provided in the side wall of the flexible tube 1. One end of the gas channel is connected to the bladder 2, and the other end of the gas channel is connected to an inflation connector. After the bladder 2 is inflated, it can fit against the inner wall of the simulated trachea 125, thereby achieving relative fixation between the flexible tube 1 and the simulated trachea 125.

[0027] like Figure 4 and Figure 6As shown, the flexible tube 1 has a smooth inner wall or multiple protrusions 6 on the lower part of the inner wall. The flexible tube 1 with a smooth inner wall is used to simulate a smooth trachea, and the flexible tube 1 with multiple protrusions 6 on the lower part of the inner wall is used to simulate a trachea with phlegm crusts on the inner wall.

[0028] In order to simulate the scenario of a patient having an indwelling endotracheal tube 7 in clinical practice, this embodiment also includes an endotracheal tube 7, which is used to insert into a simulated trachea. The air bag 8 on the lower outer side of the endotracheal tube 7 can fit against the inner wall of the simulated trachea after inflation, thereby achieving relative fixation between the endotracheal tube 7 and the simulated trachea. The suctioning component is used to extend into the endotracheal tube 7 and pass through its bottom to suction sputum into the simulated trachea, thereby simulating the operation scenario of suctioning sputum through the inside of the endotracheal tube 7.

[0029] Furthermore, injecting simulated sputum into the upper part of the airbag 8 allows the simulated sputum to accumulate in the gap between the upper part of the airbag 8 and the inner wall of the simulated trachea, thereby simulating the scenario of subglottic retention accumulation in clinical practice and improving the comprehensiveness and realism of the training.

[0030] This embodiment also includes multiple containers for holding simulated sputum, and the viscosity and color of the simulated sputum held in the multiple containers are different from each other.

[0031] Specifically, the simulated sputum is made by mixing gel, thickener, water, and pigment. By adding different pigments, simulated sputum of different colors can be obtained. By changing the combination of gel, thickener, and water, simulated sputum of different viscosity can be obtained. Simulated sputum of different viscosity corresponds to different colors, allowing trainees to more intuitively understand the real color and viscosity of different sputum, thereby meeting the training needs of suctioning operation in different sputum states.

[0032] This embodiment is equipped with a sputum simulation model to allow trainees to more intuitively understand the accumulation of sputum and further practice sputum suction techniques.

[0033] like Figure 8 As shown, the holding component includes a transparent bottle body 10 and a bottle cap 11. The outer side of the upper part of the transparent bottle body 10 is provided with an external thread, and the inner wall of the bottle cap 11 is provided with an internal thread that matches the external thread. The bottle cap 11 is threadedly installed on the upper part of the transparent bottle body 10.

[0034] This embodiment also includes a tube placement frame, on which the simulated trachea and endotracheal tube 7 can be placed.

[0035] To protect the sensor alarm component 4, a waterproof protective film 5 is provided on the outside of the sensor alarm component 4. Specifically, the waterproof protective film 5 is fixed to the base plate 3 and covers the outside of the sensor alarm component 4.

[0036] In this specific embodiment, the timing component 9 is an infrared timing timer. During suctioning, the suction tube enters the simulated trachea or endotracheal tube 7, triggering the infrared sensor probe of the infrared timing timer, and the infrared timing timer starts timing. When the suctioning ends and the suction tube is removed, the infrared sensor probe is triggered again to end the timing, and the suctioning time can be displayed intuitively.

[0037] In this specific embodiment, the sensing alarm component 4 is a vibration sensing alarm, which also has a light alarm function. When suctioning is too deep, the suction tube touches the vibration sensing alarm, triggering the light alarm and providing real-time feedback.

[0038] Specifically, the injection component includes a syringe and an extension tube. One end of the extension tube is sealed and connected to the dispensing end of the syringe, while the other end is inserted into the simulated trachea. Using the syringe and extension tube, simulated sputum can be injected into different locations within the simulated trachea, replicating different states of sputum within the airway.

[0039] In this specific embodiment, the suction component is a suction tube.

[0040] Specifically, both the flexible tube 1 and the endotracheal tube 7 are made of transparent flexible medical PVC material, while the base plate 3 is made of transparent rigid plastic sheet. The flexible tube 1 is 12cm long.

[0041] In this embodiment, the suctioning training device is used in conjunction with the endotracheal intubation model 12, such as... Figure 3 As shown, the endotracheal intubation model 12 includes a model body 121. The model body 121 is provided with a simulated oral cavity 122, a simulated nasal cavity 123, a simulated pharynx 124, a simulated trachea 125, two simulated bronchi 126, and two simulated lung lobes 127. The simulated oral cavity 122 and the simulated nasal cavity 123 are both connected to one end of the simulated pharynx 124. The other end of the simulated pharynx 124 is connected to one end of the simulated trachea 125. The other end of the simulated trachea 125 is connected to two simulated bronchi 126. Each simulated bronchi 126 is connected to a simulated lung lobe 127. In this embodiment, the end of the model body 121 away from the simulated oral cavity 122 and simulated nasal cavity 123 is an open structure. At the same time, the model body 121, simulated nasal cavity 123, simulated pharynx 124, simulated trachea 125, two simulated bronchi 126 and two simulated lung lobes 127 are all made of semi-transparent flexible medical silicone material. The alarm situation can be observed from the end of the model body 121 away from the simulated oral cavity 122 and simulated nasal cavity 123. When the vibration-sensing alarm is triggered to activate the light alarm, it can be seen through, making it convenient for the trainee to intuitively observe the alarm status.

[0042] The specific usage process is as follows: Figure 1As shown, when simulating a suctioning scenario without endotracheal intubation 7, the simulated trachea is inserted through the simulated nasal cavity 123 or simulated oral cavity 122 of the endotracheal intubation model 12, and enters the simulated trachea 125 through the simulated pharynx 124. The inflation connector is connected to the inflation device to inflate the bag 2, so that the bag 2 fits against the simulated trachea 125, thereby fixing the simulated trachea in the simulated trachea 125.

[0043] Simulated sputum is drawn from the syringe into the container. The dispensing end of the syringe is connected to one end of the extension tube, and the other end of the extension tube is inserted into a specific position in the simulated trachea as needed. Simulated sputum is then injected into the simulated trachea through the syringe and extension tube. After the sputum injection is complete, the extension tube is removed. The trainee then begins suctioning training with the suction tube. When the suction tube enters the simulated trachea, an infrared timer starts timing the suctioning time. During suctioning, if the suction tube reaches the bottom, a vibration alarm is triggered, causing a flashing light to indicate the suctioning depth.

[0044] like Figure 2 As shown, when simulating a sputum suction scenario where a patient has an indwelling endotracheal tube 7 in clinical practice, the simulated trachea is inserted through the simulated nasal cavity 123 or simulated oral cavity 122 of the endotracheal tube model 12, and then enters the simulated trachea 125 through the simulated pharynx 124. An inflation connector is connected to an inflation device to inflate the cuff 2, causing the cuff 2 to fit snugly against the simulated trachea 125, thus fixing the simulated trachea within the simulated trachea 125. The endotracheal tube 7 is then inserted into the simulated trachea, and the cuff 8 of the endotracheal tube 7 is inflated, causing the cuff 8 to fit snugly against the simulated trachea, thus fixing the endotracheal tube 7 to the simulated trachea.

[0045] Simulated sputum is drawn from the syringe into the container. The outlet of the syringe is connected to one end of the extension tube, and the other end of the extension tube is inserted into the endotracheal tube 7 and passes through its bottom into the simulated trachea. The extension tube is inserted to a specific position within the simulated trachea as needed, and simulated sputum is injected into the simulated trachea through the syringe and extension tube. After the simulated sputum injection is complete, the extension tube is removed. The trainee then begins suctioning training with the suction tube. When the suction tube enters the endotracheal tube 7, an infrared timer starts timing the suctioning time. During suctioning, if the suction tube reaches the bottom, a vibration alarm is triggered, causing a flashing light to indicate the suctioning depth. Additionally, simulated sputum can be injected into the upper part of the cuff 8 to simulate the accumulation of subglottic material in a clinical setting.

[0046] The suctioning operation training device in this embodiment can intuitively demonstrate the correctness of suctioning operations by pre-setting depth alarms and suctioning timers. Simulated sputum further allows trainees to experience the viscosity, color, and shape of sputum, enhancing the realism of the operation and stimulating their interest in new courses, knowledge, and teaching methods, thereby improving their knowledge absorption rate and achieving better teaching results. The suctioning operation training device displays the details of suctioning in a visually perceptible manner, prompting trainees to think about the time allocation between different stages of suctioning, the relationship between suctioning speed and suctioning effect, and the control of suctioning depth. Through this intuitive teaching method, students' observation skills are promoted, and their thinking abilities are cultivated.

[0047] The use of the suctioning training device in this embodiment requires instructors to possess not only solid theoretical knowledge but also proficient operational skills to effectively teach the experimental class. For instructors to deliver engaging demonstrations to trainees, they must demonstrate both strong theoretical foundations and skillful operation. Therefore, this process also involves continuous learning of new knowledge, exploration of new fields, and constant improvement and refinement. This pressure can promote the overall improvement of instructors' teaching abilities.

[0048] The suctioning training device in this embodiment can be adapted to various teaching scenarios, including classroom teaching, practical training, and assessment. It can play a unique role in different teaching scenarios, helping trainees better master suctioning techniques.

[0049] In summary, the suctioning operation training device in this embodiment is a training and early warning tool that integrates advantages such as operability, safety, ease of maintenance, and multifunctionality. These advantages make the suctioning operation training device an ideal choice for respiratory management training, which can improve the trainee's practical operation ability and overall quality.

[0050] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A suctioning operation training device, characterized in that, The device includes a simulated trachea, a timing sensor, an alarm sensor, an injection device, and a suction device. The bottom of the simulated trachea is provided with a base plate for sealing its bottom. The alarm sensor is fixed to the upper part of the base plate. The simulated trachea is inserted through the simulated nasal cavity or simulated oral cavity of the tracheal intubation model, and enters and is fixed in the simulated trachea through the simulated pharynx. The timing sensor is located on one side of the simulated trachea located outside the simulated nasal cavity or simulated oral cavity. The injection device is used to inject simulated sputum into the simulated trachea. The suction device is used to insert into the simulated trachea to suction sputum.

2. The suctioning operation training device according to claim 1, characterized in that, The simulated trachea includes a flexible tube and a bladder. The bladder is fixedly fitted onto the outer side of the lower part of the flexible tube. A gas channel is provided in the side wall of the flexible tube. One end of the gas channel is connected to the bladder, and the other end of the gas channel is connected to an inflation connector. After the bladder is inflated, it can fit against the inner wall of the simulated trachea. The inner wall of the flexible tube is smooth or has multiple protrusions in the lower part of the inner wall. The flexible tube with a smooth inner wall is used to simulate a smooth trachea, and the flexible tube with multiple protrusions in the lower part of the inner wall is used to simulate a trachea with phlegm crusts on the inner wall.

3. The suctioning operation training device according to claim 1, characterized in that, It also includes an endotracheal tube, which is used to insert into the simulated trachea, and the air bag on the lower outer side of the endotracheal tube can fit against the inner wall of the simulated trachea after inflation. The suctioning component is used to extend into the endotracheal tube and through its bottom into the simulated trachea to suction sputum.

4. The suctioning operation training device according to claim 1, characterized in that, It also includes multiple containers for holding simulated sputum, and the viscosity and color of the simulated sputum held in the multiple containers are different from each other.

5. The suctioning operation training device according to claim 4, characterized in that, The container includes a transparent bottle and a cap. The upper outer side of the transparent bottle has an external thread, and the inner wall of the cap has an internal thread that matches the external thread. The cap is threadedly installed on the upper part of the transparent bottle.

6. The suctioning operation training device according to claim 1, characterized in that, The external part of the sensing alarm component is covered with a waterproof protective film.

7. The suctioning operation training device according to claim 1, characterized in that, The sensing timing component is an infrared sensing timer.

8. The suctioning operation training device according to claim 1, characterized in that, The alarm component is a vibration alarm, which has a light alarm function.

9. The suctioning operation training device according to claim 1, characterized in that, The injection component includes a syringe and an extension tube. One end of the extension tube is sealed and connected to the liquid outlet of the syringe, and the other end of the extension tube is used to extend into the simulated trachea.

10. The suctioning operation training device according to claim 1, characterized in that, The suction device is a suction tube.