A sputum suction device for deep cleaning of artificial airways

Abstract

A suction device for deep cleaning of an artificial airway includes a ventilation tube, a blocking cuff, a suction head, and a suction tubing. The suction tubing is a tube with an annular cavity composed of an inner and outer tube. The suction head is gear-shaped and has a sputum storage cavity inside. A first through-hole and a second through-hole are respectively located on both sides of the suction head. This suction device is used for deep cleaning of an artificial airway. During suctioning, on the one hand, the cooperation between the blocking cuff and the ventilation tube completely isolates the negative pressure environment from the patient's body, preventing the negative pressure suction from drawing out air and causing a reduction in the amount of gas in the patient's peripheral lung tissue, leading to hypoxemia. On the other hand, the suction head can rotate, which scrapes off and smoothly removes sputum adhering to the walls of the artificial airway, achieving a deep cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a suction device for deep cleaning of artificial airways. Background Technology

[0002] An artificial airway is a means of artificially opening the airway when airway ventilation is obstructed due to various diseases. It refers to establishing an effective link between the physiological airway and air or other air sources to ensure airway patency. The main purposes of establishing an artificial airway are to relieve airway obstruction, clear airway secretions, and prevent aspiration.

[0003] Common types of artificial airways include face masks, nasal masks, oropharyngeal airways, nasopharyngeal airways, laryngeal masks, endotracheal intubation, tracheotomy, and combined tracheoesophageal tubes. Establishing an artificial airway provides the foundation for emergency patient resuscitation, respiratory support for critically ill patients, ventilator use, respiratory management of anesthetized patients, and oxygen supply to patients with airway obstruction. The most common type of artificial airway is the lower-level artificial airway, mainly including endotracheal intubation and tracheotomy. Endotracheal intubation involves inserting a specially designed endotracheal tube through the mouth and glottis into the trachea. This type of artificial airway maintains airway patency, provides oxygen supply, facilitates airway suction, and prevents aspiration, and is convenient and quick. Currently, endotracheal intubation has become an important measure in cardiopulmonary resuscitation and the resuscitation of critically ill patients, and is the most widely used, effective, and fastest method for establishing an artificial airway in airway management.

[0004] Establishing an artificial airway ensures adequate oxygen supply to the patient and reduces airway obstruction. Proper management of the artificial airway after its establishment includes fixation, humidification, ventilation, and suctioning. Two common challenges arise during airway secretion suction: first, large amounts of viscous sputum adhere to the inner wall of the airway, making it difficult to completely remove them using only negative pressure suction; second, if strong negative pressure is used during suctioning, air will be aspirated in addition to sputum, reducing the amount of gas reaching the patient's peripheral lung tissue and increasing the risk of hypoxemia. Furthermore, when there is a large amount of airway secretion, prolonged suctioning can impair ventilation and lead to hypoxemia. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the aforementioned technical problems by providing a suction device for deep cleaning of artificial airways.

[0006] To address the shortcomings of the aforementioned technical problems, the present invention provides a suction device for deep cleaning of artificial airways, comprising an airway, a blocking cuff, a suction head, and a suction tube.

[0007] The blocking airbag has a ring structure when inflated. The blocking airbag is fixedly sleeved on the head end of the ventilator, and the inner ring of the blocking airbag is sealed to the outer wall of the ventilator.

[0008] The suction tube is a tube with an annular cavity consisting of an inner tube and an outer tube. The annular cavity is the suction channel. The suction tube is movably sleeved on the outside of the ventilation tube through its inner tube. The suction tube can rotate and move axially relative to the ventilation tube. The tail end of the suction channel is connected to the negative pressure device, and the head end of the suction channel is connected to the suction head.

[0009] The suction head is gear-shaped, with a sputum storage cavity inside. A first through hole and a second through hole are respectively provided on both sides of the suction head. The diameter of the first through hole is suitable for the outer diameter of the suction tube, and the diameter of the second through hole is suitable for the inner diameter of the suction tube. The inner tube end of the suction tube passes through the first through hole and seals with the second through hole. The outer tube end of the suction tube seals with the first through hole. A first suction hole is provided in the recess between two adjacent teeth on the suction head, and a second suction hole is provided in the recess on the teeth of the suction head.

[0010] As a further optimization of the suction device for deep cleaning of artificial airways of the present invention: the tail end of the suction channel is closed, and the outer tube side wall of the suction tube is provided with a sputum discharge port, through which the negative pressure device is connected to the suction channel.

[0011] As a further optimization of the suction device for deep cleaning of artificial airways of the present invention: the blocking airbag is connected to an inflation tube, the inflation tube is arranged along the inner wall of the ventilation tube, the head end of the inflation tube is connected to the blocking airbag, and the tail end of the inflation tube extends out of the ventilation tube and is connected to an inflation valve.

[0012] As a further optimization of the suction device for deep cleaning of artificial airways according to the present invention: the diameter of the first suction hole is larger than the diameter of the second suction hole.

[0013] As a further optimization of the suction device for deep cleaning of artificial airways of the present invention: the suction device further includes a cleaning tube, which is attached to the inner wall of the ventilation tube along the length of the ventilation tube, and the head end of the cleaning tube extends out of the tube wall of the ventilation tube.

[0014] As a further optimization of the suction device for deep cleaning of artificial airways of the present invention: the end of the ventilation tube is provided with an end cap, and the ends of the inflation tube and the cleaning tube both protrude through the end cap.

[0015] As a further optimization of the suction device for deep cleaning of artificial airways of the present invention: the outer wall of the ventilation tube is provided with scale lines along its length.

[0016] As a further optimization of the suction device for deep cleaning of artificial airways of the present invention: the tail end of the suction tube is fitted with a collection cap, the collection cap has a collection chamber inside, the collection chamber is connected to the suction channel through the sputum discharge port, and the outer end face of the collection cap is provided with a matching interface, and the negative pressure device is connected to the matching interface through a pipe.

[0017] Beneficial effects

[0018] I. The suction device of this invention is used for deep cleaning of artificial airways. During the suctioning process, on the one hand, the cooperation between the blocking cuff and the ventilation tube completely isolates the negative pressure environment from the patient's body, avoiding the suction of air by the negative pressure during the suctioning process, which would reduce the amount of gas in the patient's peripheral lung tissue and cause hypoxemia; on the other hand, the suction head can be rotated, and the rotation operation can scrape off the sputum adhering to the wall of the artificial airway and smoothly suction it away, achieving the effect of deep cleaning.

[0019] Second, the suction head of the suction device of the present invention has a specially designed structure. The suction head is gear-like in shape, and a sputum storage cavity is provided inside the suction head. A first suction hole is provided in the recess between two adjacent teeth on the suction head. A second suction hole is provided in the recess on the teeth of the suction head. This mechanism makes the entire suction head and each tooth on the suction head gear-like. On the one hand, it can enhance the sputum scraping effect of the suction head. On the other hand, it can make the scraped sputum enter the suction head smoothly and be discharged. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of a suction device (with the air bladder blocked and not inflated).

[0021] Figure 2 This is a schematic diagram of the internal structure of a suction device (with an air sac filled with air).

[0022] Figure 3 This is a schematic diagram of the internal structure of a suction device during suctioning operations.

[0023] Figure 4 This is a schematic diagram of the external structure of the suction head (view I) in a suction device;

[0024] Figure 5 This is a schematic diagram of the external structure of the suction head (view II) in the suction device;

[0025] Figure 6 This is a schematic diagram of the internal structure of a suction device (with a cleaning tube);

[0026] Figure 7 for Figure 3 A magnified view of a portion of point A in the middle;

[0027] The diagram is labeled as follows: 1. Ventilation tube, 2. Occlusion cuff, 3. Suction head, 4. Suction tube, 5. Inflation tube, 6. Inflation valve, 7. Cleaning tube, 8. End cap, 9. Artificial airway, 10. Collection cap, 3-1. Sputum reservoir, 3-2. First through-hole, 3-3. Second through-hole, 3-4. First suction port, 3-5. Second suction port, 4-1. Inner tube, 4-2. Outer tube, 4-3. Suction channel, 4-4. Sputum discharge port. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] As shown in the figure: A suction device for deep clearance of artificial airways includes an airway 1, a clogging cuff 2, a suction head 3, and a suction tube 4. These components are the core components of the suction device; other auxiliary components are selected as needed.

[0030] The occlusion cuff 2, when inflated, has a ring-shaped structure and is fixedly fitted onto the head end of the ventilation tube 1. The inner ring of the occlusion cuff 2 is sealed to the outer wall of the ventilation tube 1. The outer wall of the ventilation tube 1 has graduations along its length, which control the insertion depth of the ventilation tube 1 into the artificial airway 9, ensuring that the occlusion cuff 2 is positioned precisely at the inner end of the artificial airway 9 after insertion. When the occlusion cuff 2 is fully inflated, its outer wall presses against the inner wall of the artificial airway 9, forming a seal. At this point, the cavity between the ventilation tube 1 and the artificial airway 9 is completely isolated from the cavity within the ventilation tube 1. The patient can still inhale through the ventilation tube 1, and during suctioning, the negative pressure environment of the cavity between the ventilation tube 1 and the artificial airway 9 prevents the suctioning of air from the patient's body. After suctioning, the air in the occlusion cuff 2 is released, and the entire suctioning device can be removed from the artificial airway 9.

[0031] The occlusion airbag 2 is connected to an inflation tube 5, which is installed along the inner wall of the ventilation tube 1. The first end of the inflation tube 5 is connected to the occlusion airbag 2, and the second end of the inflation tube 5 extends out of the ventilation tube 1 and is connected to an inflation valve 6. The inflation valve 6 can be used to inflate the occlusion airbag 2 or release the gas inside the occlusion airbag 2.

[0032] The suction tube 4 is a tube with an annular cavity, consisting of an inner tube 4-1 and an outer tube 4-2. This annular cavity serves as the suction channel 4-3. The suction tube 4 is movably fitted onto the outside of the ventilation tube 1 via its inner tube 4-1. The suction tube 4 can rotate and move axially relative to the ventilation tube 1. The tail end of the suction channel 4-3 is closed. A sputum discharge port 4-4 is provided on the side wall of the outer tube 4-2 of the suction tube 4. A collecting cap 10 is fitted onto the tail end of the suction tube 4. The collecting cap 10 has a collecting chamber inside, which communicates with the suction channel 4-3 through the sputum discharge port 4-4. A connecting interface is provided on the outer end face of the collecting cap 10, and a negative pressure device is connected to this connecting interface via a pipe. The head end of the suction channel 4-3 is connected to the suction head 3. The negative pressure device creates a negative pressure environment inside the suction channel 4-3, allowing for sputum suction through the suction head 3. During suctioning, rotating the suction tube 4 allows for scraping the inner wall of the artificial airway, achieving thorough cleaning without any blind spots. Slowly pulling the suction tube 2 outwards during rotation completes the cleaning of the entire artificial airway.

[0033] The suction head 3 is gear-shaped. Inside the suction head 3, there is a sputum storage cavity 3-1. On both sides of the suction head 3, there are a first through hole 3-2 and a second through hole 3-3 respectively. The diameter of the first through hole 3-2 is suitable for the diameter of the outer tube 4-2 of the suction tube 4, and the diameter of the second through hole 3-3 is suitable for the diameter of the inner tube 4-1 of the suction tube 4. The end of the inner tube 4-1 of the suction tube 4 passes through the first through hole 3-2 and is sealed and connected with the second through hole 3-3. The end of the outer tube 4-2 of the suction tube 4 is sealed and connected with the first through hole 3-2. A first suction hole 3-4 is provided in the recess between two adjacent teeth on the suction head 3. A second suction hole 3-5 is provided in the recess on the teeth of the suction head 3. The diameter of the first suction hole 3-4 is larger than the diameter of the second suction hole 3-5.

[0034] Through the above structure, the sputum storage cavity 3-1 of the suction head 3 is connected to the suction channel 4-3 of the suction tube 4. The sputum sucked into the suction head 3 enters the suction channel 4-3 through the sputum storage cavity 3-1 and is finally discharged.

[0035] The suction head has a specially designed structure, which is gear-shaped. The inside of the suction head has a sputum storage chamber. The first suction hole is set in the recess between two adjacent teeth on the suction head. The teeth of the suction head have a recess, and the recess has a second suction hole. This mechanism makes the entire suction head and each tooth on the suction head gear-shaped. On the one hand, it can enhance the sputum scraping effect of the suction head. On the other hand, it can make the scraped sputum enter the suction head smoothly and be discharged.

[0036] To enhance the functionality of the suction device and improve the cleaning effect of the artificial airway, the suction device also includes a cleaning tube 7. The cleaning tube 7 is attached to the inner wall of the ventilation tube 1 along its length, with its head extending from the wall of the ventilation tube 1. An end cap 8 is provided at the tail end of the ventilation tube 1, through which the tail ends of both the inflation tube 5 and the cleaning tube 7 protrude. The function of the cleaning tube 7 is to spray cleaning fluid into the cavity between the ventilation tube 1 and the artificial airway 9, further cleaning the artificial airway.

[0037] The method of using the suction device of this invention is as follows: First, insert the end of the ventilation tube with the blocking cuff into the artificial airway, adjusting it to the appropriate length according to the graduation lines. Then, inflate the blocking cuff with air through the inflation valve. Once the blocking cuff is full, connect the suction tube to the negative pressure device and start the negative pressure device to perform suctioning. During suctioning, rotate the suction tube while pulling it outwards, repeating this process until the suction trajectory of the suction head completely covers the inner wall of the artificial airway. After suctioning, if further cleaning is required, inject cleaning fluid into the cavity between the ventilation tube and the artificial airway through the cleaning tube, and then complete the cleaning of the artificial airway as before. After completion, turn off the negative pressure device, release the gas from the blocking cuff through the inflation valve, and remove the ventilation tube.

[0038] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A suction device for deep clearance of artificial airways, characterized in that: It includes a ventilation tube (1), an occlusion cuff (2), a suction head (3) and a suction tube (4). The outer wall of the ventilation tube (1) is provided with scale lines along its length. The blocking airbag (2) has a ring structure when inflated. The blocking airbag (2) is fixedly sleeved on the head end of the ventilator (1). The inner ring of the blocking airbag (2) is sealed to the outer wall of the ventilator (1). The blocking airbag (2) is connected to an inflation tube (5). The inflation tube (5) is set along the inner wall of the ventilator (1). The head end of the inflation tube (5) is connected to the blocking airbag (2). The tail end of the inflation tube (5) extends out of the ventilator (1) and is connected to an inflation valve (6). The suction tube (4) is a tube with an annular cavity consisting of an inner tube (4-1) and an outer tube (4-2). This annular cavity serves as a suction channel (4-3). The suction tube (4) is movably fitted outside the ventilation tube (1) through its inner tube (4-1). The suction tube (4) can rotate and move axially relative to the ventilation tube (1). The tail end of the suction channel (4-3) is connected to a negative pressure device, and the head end of the suction channel (4-3) is connected to a suction head (3). The end of the suction tube (4) is closed. The outer tube (4-2) of the suction tube (4) has a sputum discharge port (4-4) on its side wall. The negative pressure device is connected to the suction channel (4-3) through the sputum discharge port (4-4). The end of the suction tube (4) is fitted with a collection cap (10). The collection cap (10) has a collection chamber inside. The collection chamber is connected to the suction channel (4-3) through the sputum discharge port (4-4). The outer end face of the collection cap (10) is provided with a connection interface. The negative pressure device is connected to the connection interface through a pipe. The suction head (3) is gear-shaped, and has a sputum storage cavity (3-1) inside. A first through hole (3-2) and a second through hole (3-3) are respectively provided on both sides of the suction head (3). The diameter of the first through hole (3-2) is suitable for the diameter of the outer tube (4-2) of the suction tube (4), and the diameter of the second through hole (3-3) is suitable for the diameter of the inner tube (4-1) of the suction tube (4). The end of the inner tube (4-1) of the suction tube (4) is inserted through... The first through hole (3-2) and the second through hole (3-3) are sealed and connected. The head end of the outer tube (4-2) of the suction tube (4) is sealed and connected to the first through hole (3-2). The first suction hole (3-4) is provided in the recess between two adjacent teeth on the suction head (3). The teeth of the suction head (3) are provided with a recess, and the second suction hole (3-5) is provided in the recess. The diameter of the first suction hole (3-4) is larger than the diameter of the second suction hole (3-5). The suction device also includes a cleaning tube (7), which is attached to the inner wall of the ventilation tube (1) along the length of the ventilation tube (1). The head end of the cleaning tube (7) extends out of the wall of the ventilation tube (1), and the tail end of the ventilation tube (1) is provided with an end cap (8). The tail ends of the inflation tube (5) and the cleaning tube (7) both pass through the end cap (8).

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