Medical emergency aspirator assisting in eliminating phlegm

Abstract

The invention discloses a medical emergency aspirator for assisting in eliminating phlegm, and relates to the technical field of sputum aspiration equipment, the medical emergency aspirator comprises a negative pressure machine body, a negative pressure tube arranged on the negative pressure machine body and a sputum aspiration tube fixed at one end of the negative pressure tube, and the medical emergency aspirator adopts the structure that a breakthrough ring is arranged at one end of the sputum aspiration tube; during sputum suction, the breakthrough ring can break through thick sputum, damage the overall tension of the sputum and reduce the burden of sputum suction of the sputum suction tube, the breathing tubes are arranged outside the sputum suction tube at equal angles, when the sputum suction tube damages the sputum, air is injected into the throat of a patient, the patient can breathe in the sputum suction process, and the sputum suction effect is improved. The negative pressure generated by the negative pressure machine body is utilized, so that the sealing plug can automatically reciprocate, the sealing plug automatically injects external air into the throat of a patient through the breathing tube, the patient can breathe effectively, and the problem that in the prior art, sputum suction is conducted firstly, and then ventilation is conducted is solved.

Description

Technical Field

[0001] This invention relates to the field of sputum suction equipment technology, specifically to a medical emergency suction device for assisting in expectoration. Background Technology

[0002] Emergency suction devices for sputum removal, also known as emergency suction devices, are specialized medical equipment that manages the airway through mechatronics. Their core working principle is based on the Bernoulli hydrodynamic effect. A micro electric pump or manual piston device creates negative pressure in a closed tube, which, together with a medical-grade silicone catheter, establishes a suction channel. This negative pressure system can effectively remove viscous abnormal secretions from the airway, including sputum, blood clots, vomit, and other obstructions. These devices are widely used in emergency care, surgery, and intensive care, and are an important tool in clinical nursing.

[0003] Existing medical emergency suction devices for assisted expectoration insert a catheter into the patient's throat and generate negative pressure through electric or manual means. After connecting the catheter, suction is formed to remove sputum, secretions, etc. from the patient's airway, helping to keep the airway open.

[0004] The existing technology has the advantages of high suction efficiency, significant effect and convenient operation, and can effectively clear sputum. However, its workflow has the limitation of suctioning sputum before ventilation. When dealing with high viscosity or hard sputum, the suctioning operation time will also be prolonged. The suctioning process may cause temporary interruption of the airway. For critically ill patients, this interruption of respiratory support may delay the rescue opportunity, especially in emergency situations where ventilation needs to be maintained, which poses a potential risk to the patient's life.

[0005] To address the above problems, this invention proposes a medical emergency suction device to assist in expectoration. Summary of the Invention

[0006] The present invention addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. Specifically, the purpose of the present invention is to provide a medical emergency suction device to assist in expectoration, thereby solving the limitation of the above-mentioned background technology that the suction process involves first suctioning sputum and then providing ventilation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a medical emergency suction device for assisting expectoration, comprising a negative pressure unit body, a negative pressure tube disposed on the negative pressure unit body, and a suction tube fixed to one end of the negative pressure tube, and further comprising: An outer tube fitted over the suction catheter and a ventilation tube fixed to the outer wall of the negative pressure tube; A breakthrough component installed on the outer wall of the suction catheter to prevent the breakdown of sputum during suctioning; An air delivery component located outside the ventilation tube to provide air during suctioning, and a control component located inside the negative pressure tube to drive the air delivery component to deliver air intermittently. The breakthrough component includes a breakthrough ring set at an equal angle on the outer wall of the suction tube for penetrating sputum; The air delivery component includes a breathing tube that is set at equal angles on the outer wall of the suction tube for delivering outside air; The control components include a resistance plate that reciprocates based on negative pressure.

[0008] Preferably, the breakthrough ring has a "U" shaped structure; The outer wall of the suction tube is provided with grooves at equal angles, and the two ends of the breakthrough ring are rotatably connected to the inner wall of the grooves through connecting shafts.

[0009] Preferably, a slider is fixedly mounted on the outer wall of the suction tube in a mirror image; The inner wall of the outer sleeve is mirror-image-formed with a slide rail, and the outer wall of the slider is slidably connected to the inner wall of the slide rail. A first spring is fixedly connected to one side of the slider, and one end of the first spring is fixedly connected to the inner wall of the slide. The outer wall of the suction tube is slidably connected to the inner wall of the outer sleeve.

[0010] Preferably, the air supply component further includes an air outlet pipe fixed to the outer wall of the air exchange pipe, and the outer wall of the air outlet pipe is fixedly connected to the outer wall of the suction tube. One end of the air outlet pipe is fixedly connected to a connecting pipe; One end of the breathing tube is fixedly connected to the outer wall of the connecting tube.

[0011] Preferably, the connecting pipe has a "ring" shaped structure; The inner wall of the connecting tube is fixedly connected to the outer wall of the suction tube.

[0012] Preferably, the air supply component further includes a second spring fixed to the inner wall of the air exchange pipe, and a sealing plug is fixedly connected to one end of the second spring; The outer wall of the sealing plug is slidably connected to the inner wall of the ventilation pipe.

[0013] Preferably, the inner wall of the ventilation pipe is provided with an air inlet check valve; An exhaust one-way valve is fixedly installed on the inner wall of the exhaust pipe.

[0014] Preferably, the control component includes a groove mirror-shaped opening on the inner wall of the negative pressure pipe, and a movable rod is slidably connected to the inner wall of the groove; A movable block is fixedly connected to one side of the movable rod, and a rotating frame is fixedly connected to the outer wall of the movable block at equal angles. One end of the resistance plate is rotatably connected to the inner wall of the rotating frame.

[0015] Preferably, a suction cup is fixedly installed on the inner wall of the movable block; A connecting rope is fixedly connected to one side of the movable block, and one end of the connecting rope passes through the negative pressure pipe and extends into the interior of the ventilation pipe. One end of the connecting rope extending into the air exchange pipe is fixedly connected to one side of the sealing plug. The connecting rope is slidably connected to both the negative pressure pipe and the ventilation pipe.

[0016] Preferably, a support rod is fixedly connected to the inner wall of the ventilation pipe, and a control ring is fixedly connected to one end of the support rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention features a perforation ring at one end of the suction catheter. During suctioning, the perforation ring breaks through thick sputum, disrupting its overall tension and reducing the burden on the suction catheter. A breathing tube is positioned at an equal angle outside the suction catheter, allowing air to be injected into the patient's throat as the suction catheter breaks down the sputum. This enables the patient to breathe during suctioning. The negative pressure generated by the negative pressure unit causes the sealing plug to automatically reciprocate, automatically injecting external air into the patient's throat through the breathing tube, allowing for effective breathing. This invention overcomes the limitations of existing technologies that require suctioning before ventilation. Compared to existing technologies, it offers advantages such as prioritizing ventilation and high-efficiency suctioning. For critically ill patients, especially in emergency situations requiring sustained ventilation, it allows for timely intervention and improves the success rate of resuscitation.

[0018] The negative pressure machine is always running during use, and the negative pressure tube is always under negative pressure. After the resistance plate opens and moves a certain distance, it will be limited by the inner wall of the control ring and retract. After a period of retraction, the resistance plate will open again due to the continuous negative pressure. Therefore, the moving block will move back and forth, and the sealing plug will also move back and forth. The ventilation tube is always drawing in external air and then pushing the air into the interior of the exhaust tube, so that the breathing tube outputs air intermittently, avoiding the patient's suffocation during sputum suction. This process does not require the activation of other external equipment. It automatically injects air into the patient's throat during sputum suction, and has the advantages of simple and convenient operation and rapid ventilation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the suction tube and the air outlet tube in this invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of the outer sleeve in this invention.

[0022] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle.

[0023] Figure 5 This is a schematic diagram of the structure in this invention where the breakthrough ring is located inside the outer sleeve.

[0024] Figure 6 This is a schematic diagram of the structure in this invention where the breakthrough ring extends beyond the outer sleeve.

[0025] Figure 7 This is a first-view cross-sectional view of the ventilation pipe and negative pressure pipe in this invention.

[0026] Figure 8 This is a second-view cross-sectional view of the ventilation pipe and negative pressure pipe in this invention.

[0027] Figure 9 This is a schematic diagram of the structure of the resistance plate in this invention when it is opened by air pressure.

[0028] Figure 10 This is a schematic diagram of the structure of the resistance plate when it is limited by the control ring in this invention.

[0029] In the diagram: 1. Negative pressure machine body; 2. Negative pressure tube; 3. Suction tube; 31. Breakthrough ring; 32. Slider; 33. Outer tube; 34. First spring; 4. Ventilation tube; 5. Outlet tube; 51. Connecting tube; 52. Breathing tube; 6. Control ring; 7. Moving rod; 71. Moving block; 72. Resistance plate; 73. Suction cup; 74. Connecting rope; 75. Second spring; 76. Sealing plug. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1 to 10 The present invention provides a technical solution: a medical emergency suction device for assisting expectoration, comprising a negative pressure unit body 1, a negative pressure tube 2 disposed on the negative pressure unit body 1, and a suction tube 3 fixed to one end of the negative pressure tube 2, and further comprising: The outer sleeve 33 is fitted over the outside of the suction tube 3 and the ventilation tube 4 is fixed to the outer wall of the negative pressure tube 2; A breakthrough component for breaking up sputum during suctioning is installed on the outer wall of the suction tube 3; An air delivery component located outside the ventilation tube 4 for providing air during suctioning, and a control component located inside the negative pressure tube 2 for driving the air delivery component to deliver air intermittently. The breakthrough component includes a breakthrough ring 31 that is set at an equal angle on the outer wall of the suction tube 3 for penetrating sputum; The air delivery component includes a breathing tube 52 that is set at equal angles on the outer wall of the suction tube 3 for delivering outside air; The control components include a resistance plate 72 that reciprocates based on negative pressure.

[0032] In practice, the negative pressure machine body 1 is an existing device, which will not be explained in detail here. When the negative pressure machine body 1 is started, it will generate negative pressure. The negative pressure tube 2 will generate suction force on the suction tube 3 through the negative pressure, and the suction tube 3 can then absorb the sputum. When the suction tube 3 is inserted into the patient's throat, the negative pressure suction can absorb the sputum, thus achieving assisted expectoration.

[0033] Breakthrough ring 31 has a "U" shaped structure; The outer wall of the suction tube 3 is provided with grooves at equal angles, and the two ends of the breakthrough ring 31 are rotatably connected to the inner wall of the groove through a connecting shaft.

[0034] In practice, the arc end of the breakthrough ring 31 faces the outside of the suction tube 3. When the suction tube 3 is inserted into the patient's throat, the outer tube 33 will first come into contact with the sputum. When the sputum is too thick and hard, the outer tube 33 will be blocked by the sputum. At this time, the suction tube 3 can be pushed further, so that one end of the suction tube 3 extends to the outside of the outer tube 33. At this time, the breakthrough ring 31 will extend to the outside of the outer tube 33. The breakthrough ring 31 penetrates the sputum and breaks it. After the sputum is broken, its tension will be reduced. Therefore, the resistance of the suction tube 3 when suctioning sputum will also be reduced, making it easier for the suction tube 3 to absorb the sputum and avoiding the situation where the suction tube 3 cannot suction sputum.

[0035] A slider 32 is fixedly installed on the outer wall of the suction tube 3 in a mirror image; The inner wall of the outer sleeve 33 is mirror-image-formed with a slide rail, and the outer wall of the slider 32 is slidably connected to the inner wall of the slide rail; A first spring 34 is fixedly connected to one side of the slider 32, and one end of the first spring 34 is fixedly connected to the inner wall of the slide. The outer wall of the suction tube 3 is slidably connected to the inner wall of the outer tube 33.

[0036] In practice, after the suctioning is completed and the suction tube 3 is removed from the patient's throat, the elastic force of the first spring 34 can cause the outer tube 33 to return to its original position, and the breakthrough ring 31 will retract into the inner part of the outer tube 33. The outer tube 33 can protect the breakthrough ring 31 and prevent it from being deformed or damaged by external objects when it is not in use.

[0037] The air supply component also includes an air outlet pipe 5 fixed to the outer wall of the air exchange pipe 4, and the outer wall of the air outlet pipe 5 is fixedly connected to the outer wall of the suction tube 3. One end of the air outlet pipe 5 is fixedly connected to a connecting pipe 51; One end of the breathing tube 52 is fixedly connected to the outer wall of the connecting tube 51.

[0038] In practice, multiple breathing tubes 52 are used, and these multiple breathing tubes 52 are distributed at equal angles outside the suction tube 3. The multiple breathing tubes 52 and the breakthrough ring 31 are staggered, ensuring no obstruction between them. Figure 5 and Figure 6 As shown, the breakthrough ring 31 has a U-shaped structure, and the arc end of the breakthrough ring 31 faces the outside of the suction tube 3. When the breakthrough ring 31 penetrates the sputum, it rotates the suction tube 3 and the outer tube 33, and the breakthrough ring 31 will break up the sputum over a large area, making it easier for the breathing tube 52 to penetrate the sputum. After the breathing tube 52 penetrates the sputum, it is located deep in the patient's throat. At this time, the breathing tube 52 is injected with air, and the patient can breathe more smoothly.

[0039] The connecting pipe 51 has a "ring" shaped structure; The inner wall of the connecting tube 51 is fixedly connected to the outer wall of the suction tube 3.

[0040] In practice, the air outlet 5 can enter the interior of the connecting pipe 51, and the connecting pipe 51 can then inject air into the interior of multiple breathing pipes 52, so that air can be exhaled from multiple breathing pipes 52.

[0041] The air supply component also includes a second spring 75 fixed to the inner wall of the air exchange pipe 4, and a sealing plug 76 is fixedly connected to one end of the second spring 75; The outer wall of the sealing plug 76 is slidably connected to the inner wall of the ventilation pipe 4.

[0042] An air inlet check valve is installed on the inner wall of the air exchange pipe 4; An exhaust check valve is fixedly installed on the inner wall of the exhaust pipe 5.

[0043] In practice, the sealing plug 76 is sealed to the ventilation tube 4 and can slide inside the ventilation tube 4. When the sealing plug 76 moves away from the breathing tube 52, the inside of the ventilation tube 4 is under negative pressure. Therefore, outside air can be drawn into the ventilation tube 4 through the inlet one-way valve. When the sealing plug 76 is reset by the elastic force of the second spring 75, the inlet one-way valve cannot discharge air. Therefore, air will be discharged through the outlet one-way valve. The air enters the interior of the outlet tube 5 through the outlet one-way valve. The outlet tube 5 can then inject air into the patient's throat through the connecting tube 51 and the breathing tube 52.

[0044] The control components include a slide groove mirrored on the inner wall of the negative pressure pipe 2, and a moving rod 7 is slidably connected to the inner wall of the slide groove; A movable block 71 is fixedly connected to one side of the movable rod 7, and a rotating frame is fixedly connected to the outer wall of the movable block 71 at equal angles. One end of the resistance plate 72 is rotatably connected to the inner wall of the rotating frame.

[0045] In specific implementation, the rotating frame installed on the outer wall of the movable block 71 has a solid surface on the side close to the negative pressure machine body 1. The resistance plate 72 will rotate under the action of negative pressure and be in an open state. However, the resistance plate 72 will be limited by the inner wall of the rotating frame. The maximum rotation angle of the resistance plate 72 will not exceed ninety degrees. When the resistance plate 72 is in the "open" state, the resistance it receives will increase, which can drive the movable block 71 to move towards the negative pressure machine body 1.

[0046] A suction cup 73 is fixedly installed on the inner wall of the movable block 71; A connecting rope 74 is fixedly connected to one side of the movable block 71. One end of the connecting rope 74 passes through the negative pressure pipe 2 and extends into the interior of the ventilation pipe 4. One end of the connecting rope 74 extends into the air exchange pipe 4 and is fixedly connected to one side of the sealing plug 76; Connecting rope 74 is slidably connected to negative pressure pipe 2 and ventilation pipe 4. In practice, when the moving block 71 moves toward the negative pressure machine body 1, it will drive the sealing plug 76 to move through the connecting rope 74. The sealing plug 76 can then draw external air into the interior of the air exchange pipe 4 through the air inlet one-way valve.

[0047] A support rod is fixedly connected to the inner wall of the ventilation pipe 4, and a control ring 6 is fixedly connected to one end of the support rod.

[0048] In practice, after one end of the moving block 71 moves a certain distance, it will pass through the control ring 6. The inner wall of the control ring 6 will limit the resistance plate 72. The resistance plate 72 will rotate towards the moving block 71 due to the limitation of the inner wall of the control ring 6, thus achieving contraction and reset. Therefore, the resistance experienced by the moving block 71 will be reduced. The elastic force of the second spring 75 can drive the sealing plug 76 to reset. When the sealing plug 76 resets, it will force air into the interior of the air outlet pipe 5 through the one-way valve. Then, the air will be dispersed through the connecting pipe 51 to the breathing tubes 52 that are distributed at equal angles. The air coming out of the breathing tubes 52 can directly enter the patient's throat, so that the patient can breathe in time.

[0049] Working principle: When using this medical emergency suction device to assist in expectoration, first start the negative pressure machine body 1. The negative pressure machine body 1 will generate negative pressure on the negative pressure tube 2, and the negative pressure tube 2 will generate suction on the suction tube 3.

[0050] The staff member holds the outer tube 33 in one hand and the suction tube 3 and the exhaust tube 5 in the other hand. One end of the outer tube 33 is inserted into the patient's throat. When the outer tube 33 extends into the patient's throat, it will come into contact with sputum. Thicker and harder sputum will limit the outer tube 33. At this time, the suction tube 3 is pushed forward inside the outer tube 33. The breakthrough ring 31 at the front end of the suction tube 3 then penetrates the sputum. The breakthrough rings 31, which are evenly distributed, divide the thick sputum. The surface tension of the thick sputum is destroyed. At this time, the suction tube 3 can more easily absorb the sputum through negative pressure suction.

[0051] When the breakthrough ring 31 penetrates the thick sputum, the outer tube 33 can be rotated or its position slightly changed as needed. The breakthrough ring 31, penetrating the sputum, achieves a "stirring" state in the sputum, which more thoroughly breaks down the sputum. Combined with the negative pressure of the suction tube 3 to adsorb the sputum, the sputum can be removed more efficiently.

[0052] When the negative pressure machine body 1 generates negative pressure, and negative pressure suction is generated through the negative pressure pipe 2 and suction pipe 3, there is an adsorption force inside the negative pressure pipe 2 towards the negative pressure machine body 1. The resistance plate 72 will rotate under the action of negative pressure. The resistance plates 72, which are evenly distributed, will form a "flowering" state. The resistance plate 72 is an arc-shaped structure and is in an open state, which will reduce the ventilation space of the negative pressure pipe 2. The resistance experienced by the resistance plate 72 will increase, which can drive the moving block 71 to move towards the negative pressure machine body 1. The moving block 71 will pull the sealing plug 76 through the connecting rope 74, so that the sealing plug 76 compresses the second spring 75. When the sealing plug 76 moves, the ventilation pipe 4 will draw external air into the interior of the ventilation pipe 4 through the air intake one-way valve on the inner wall of the ventilation pipe 4. Then, one end of the moving block 71 moves to the through control ring 6. The inner wall of the control ring 6 plays a limiting role on the resistance plate 72. The resistance plate 72 is limited by the inner wall of the control ring 6 and rotates towards the moving block 71 to achieve contraction and reset.

[0053] After the resistance plate 72 retracts to its original state, the resistance on the moving block 71 decreases, and the elastic force of the second spring 75 can drive the sealing plug 76 to reset. When the sealing plug 76 resets, the air inside the ventilation tube 4 is pushed into the interior of the exhaust tube 5 through the exhaust one-way valve inside the exhaust tube 5. Then the air is dispersed through the connecting tube 51 to the breathing tubes 52 that are distributed at equal angles. One end of the breathing tube 52 is longer than the suction tube 3. When the sputum is broken by the breakthrough ring 31, the breathing tube 52 also penetrates the sputum. One end of the breathing tube 52 is located deep in the patient's throat, and the air coming out of the breathing tube 52 can directly enter the patient's throat, so that the patient can breathe in time.

[0054] The negative pressure unit 1 is always in the start state during use, and the negative pressure tube 2 is always in a negative pressure state. After the moving block 71 is reset, the resistance plate 72 will rotate again under the action of negative pressure. The resistance on the resistance plate 72 will increase, which will drive the moving block 71 to move towards the negative pressure unit 1 again. Through the same principle, the breathing tube 52 will be expelled again. The moving block 71 will move back and forth, so the sealing plug 76 will also move back and forth. The ventilation tube 4 is always in a state of drawing in external air and then pushing the air into the interior of the exhaust tube 5, so that the breathing tube 52 expels air intermittently, avoiding the patient's suffocation during sputum suction.

[0055] It should be noted that when the resistance plate 72 contracts, the suction cup 73 will act as an adsorbent on the resistance plate 72, and the resistance plate 72 will not open immediately in a short time. The elastic force of the second spring 75 can drive the moving block 71 to reset through the sealing plug 76 and the connecting rope 74. The suction cup 73 is small in size and generates a small suction force, so there will be no situation where the resistance plate 72 is adsorbed on the moving block 71 and cannot open.

[0056] This invention pushes the suction tube 3, causing the breakthrough ring 31 to penetrate the sputum and break down thick sputum. The surface tension of the thick sputum is disrupted, allowing the suction tube 3 to remove the sputum more efficiently through negative pressure. Inside the negative pressure tube 2, there is an adsorption force towards the negative pressure unit 1. The resistance plate 72 rotates under the negative pressure, and the evenly distributed resistance plates 72 form a "flowering" pattern, increasing the resistance and thus moving the moving block 71. The moving block 71 pulls the sealing plug 76 via the connecting rope 74. The sealing plug 76 draws external air into the ventilation tube 4 through the air intake one-way valve. Subsequently, the resistance plate 72 is limited by the inner wall of the control ring 6 and rotates towards the moving block 71, achieving contraction and recovery. When the moving block 71 is in position, the resistance it experiences decreases, and the elastic force of the second spring 75 can drive the sealing plug 76 to reset. When the sealing plug 76 resets, it forces air through the one-way valve into the interior of the air outlet pipe 5. Subsequently, the air is dispersed through the connecting pipe 51 to the breathing tubes 52, which are distributed at equal angles. The air coming out of the breathing tubes 52 can directly enter the patient's throat, allowing the patient to breathe in a timely manner. The negative pressure machine body 1 is always in the start-up state during use. The negative pressure will cause the moving block 71 to move back and forth, so the sealing plug 76 will also move back and forth. The air exchange pipe 4 is always in the state of drawing in external air and then pushing the air into the interior of the air outlet pipe 5, so that the breathing tube 52 outputs air intermittently, avoiding the patient from suffocating during sputum suction.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A medical emergency suction device for assisting expectoration, comprising a negative pressure unit (1), a negative pressure tube (2) disposed on the negative pressure unit (1), and a suction tube (3) fixed to one end of the negative pressure tube (2), characterized in that: Also includes: The outer sleeve (33) is fitted outside the suction tube (3) and the ventilation tube (4) is fixed to the outer wall of the negative pressure tube (2). The part installed on the outer wall of the suction tube (3) is used to break through the sputum during suctioning; An air delivery component located outside the ventilation tube (4) for providing air during suctioning and a control component located inside the negative pressure tube (2) for driving the air delivery component to deliver air intermittently. The breakthrough component includes a breakthrough ring (31) set at an equal angle on the outer wall of the suction tube (3) for penetrating sputum; The air delivery component includes a breathing tube (52) that is set at equal angles on the outer wall of the suction tube (3) for delivering outside air. The control components include a resistance plate (72) that reciprocates based on negative pressure.

2. The medical emergency suction device for assisting expectoration according to claim 1, characterized in that: The breakthrough ring (31) has a "U" shaped structure; The outer wall of the suction tube (3) is provided with grooves at equal angles, and the two ends of the breakthrough ring (31) are rotatably connected to the inner wall of the groove through a connecting shaft.

3. The medical emergency suction device for assisting expectoration according to claim 2, characterized in that: The outer wall of the suction tube (3) is fixedly mounted with a slider (32) in a mirror image. The inner wall of the outer sleeve (33) is mirror-image-opened with a slide rail, and the outer wall of the slider (32) is slidably connected to the inner wall of the slide rail; A first spring (34) is fixedly connected to one side of the slider (32), and one end of the first spring (34) is fixedly connected to the inner wall of the slide. The outer wall of the suction tube (3) is slidably connected to the inner wall of the outer sleeve (33).

4. The medical emergency suction device for assisting expectoration according to claim 1, characterized in that: The air supply component also includes an air outlet pipe (5) fixed to the outer wall of the air exchange pipe (4), and the outer wall of the air outlet pipe (5) is fixedly connected to the outer wall of the suction tube (3); One end of the air outlet pipe (5) is fixedly connected to a connecting pipe (51); One end of the breathing tube (52) is fixedly connected to the outer wall of the connecting tube (51).

5. The medical emergency suction device for assisting expectoration according to claim 4, characterized in that: The connecting pipe (51) has a "ring" shaped structure; The inner wall of the connecting tube (51) is fixedly connected to the outer wall of the suction tube (3).

6. The medical emergency suction device for assisting expectoration according to claim 5, characterized in that: The air supply component also includes a second spring (75) fixed to the inner wall of the air exchange pipe (4), and a sealing plug (76) is fixedly connected to one end of the second spring (75). The outer wall of the sealing plug (76) is slidably connected to the inner wall of the ventilation pipe (4).

7. A medical emergency suction device for assisting expectoration according to claim 6, characterized in that: The inner wall of the ventilation pipe (4) is provided with an air inlet one-way valve; An exhaust one-way valve is fixedly installed on the inner wall of the exhaust pipe (5).

8. The medical emergency suction device for assisting expectoration according to claim 1, characterized in that: The control component includes a sliding groove mirrored on the inner wall of the negative pressure pipe (2), and a moving rod (7) is slidably connected to the inner wall of the sliding groove. A moving block (71) is fixedly connected to one side of the moving rod (7), and a rotating frame is fixedly connected to the outer wall of the moving block (71) at equal angles. One end of the resistance plate (72) is rotatably connected to the inner wall of the rotating frame.

9. A medical emergency suction device for assisting expectoration according to claim 8, characterized in that: A suction cup (73) is fixedly installed on the inner wall of the movable block (71). A connecting rope (74) is fixedly connected to one side of the movable block (71). One end of the connecting rope (74) passes through the negative pressure pipe (2) and extends into the interior of the ventilation pipe (4); One end of the connecting rope (74) extending into the air exchange pipe (4) is fixedly connected to one side of the sealing plug (76); The connecting rope (74) is slidably connected to the negative pressure pipe (2) and the ventilation pipe (4).

10. A medical emergency suction device for assisting expectoration according to claim 9, characterized in that: The inner wall of the ventilation pipe (4) is fixedly connected to a support rod, and one end of the support rod is fixedly connected to a control ring (6).

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