Emergency department convenient suction device

Abstract

This invention provides a portable suction device for emergency departments, relating to the field of emergency suction devices. This portable suction device includes a negative pressure suction device, and further includes: a non-contact negative pressure suction assembly utilizing the negative pressure suction of the negative pressure suction device; a displacement tubing assembly, one end of which is connected to the negative pressure suction device; an inner tube assembly located within the displacement tubing assembly, one end of which is connected to the non-contact negative pressure suction assembly; and a suction head assembly, one end of which is externally connected to the displacement tubing assembly. The displacement tubing assembly allows the suction head assembly to extend, retract, and rotate. In this portable suction device, the hemispherical head for suctioning protrudes from the smooth tube surface. During suctioning, the smooth tube surface is less likely to come into contact with the trachea or pharyngeal wall, thus the negative pressure will not damage the pharyngeal wall, resulting in less patient discomfort during suctioning. Even when the smooth tube rolls within the patient's throat, it is the convex surface of the hemispherical head that contacts the pharyngeal wall, minimizing friction.

Description

Technical Field

[0001] This invention relates to the field of emergency suction devices, specifically a portable suction device for the emergency department. Background Technology

[0002] Suctioning devices are mainly used to clear sputum from the airway. Currently, hospitals use endotracheal intubation and oropharyngeal suctioning to manage airways in patients with stroke, coma, vomiting, lung infection with sputum plugs, surgery, acute laryngeal obstruction, or emergency tracheotomy, in order to clear airway secretions or foreign objects and maintain airway patency. If airway secretions or vomit are not cleared in time, it can lead to worsening infection, atelectasis of one lung, and in severe cases, suffocation or even death.

[0003] Currently, electric suction devices are generally used in hospital clinical nursing and emergency care. These devices are not only costly and bulky, making them inconvenient to carry, but more importantly, they rely on a power source to operate. Furthermore, the need to assemble the suction device during emergency care delays the patient's rescue time and is inconvenient for outdoor rescue operations, making them unsuitable for widespread use. Existing manual suction devices generally use a negative pressure design, are energy-efficient and noiseless, and can be used by a single person to avoid cross-infection and ensure safe use. However, existing manual suction devices have poor sputum collection efficiency, especially when the sputum is dry and cannot be completely suctioned out. In addition, both electric and manual suction devices use a single suction tube for suctioning. First, the suction tube is inserted into the patient's throat through the mouth, and then the tube is rotated and pulled. This causes pain to the patient. If the suction port of the suction tube reaches the inner wall of the throat, the increased negative pressure inside the suction tube can damage the patient's throat. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a portable suction device for the emergency department, solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a portable suction device for the emergency department, comprising a negative pressure suction device, and further comprising: The non-contact negative pressure suction component utilizes the negative pressure suction of the negative pressure extractor. The displacement pipeline assembly is connected at one end to the negative pressure extractor; The inner tube assembly is located in the displacement pipeline assembly, and one end of it is connected to the non-contact negative pressure suction assembly. The suction head assembly has one end externally connected to the displacement tubing assembly, which enables the suction head assembly to extend, retract, and rotate. The inside of the suction head assembly is connected to the inner tubing assembly to achieve negative pressure suction. A saline immersion component, with its spray end installed in the suction head assembly, is used to immerse the outside of the suction head assembly and moisten the sputum.

[0006] Preferably, the suction head assembly includes: A smooth tube, with spherical ends; The hemispherical head has multiple rows, which are arranged in a circumferential array along the axis of the smooth tube. Several suction holes are opened on the hemispherical head, and the end of the hemispherical head away from the smooth tube protrudes out of the smooth tube, and the protruding end has a hemispherical structure.

[0007] Preferably, the displacement piping assembly includes: The telescopic spiral tube has one end fixed and sealed to the end of the smooth tube, and when the other end of the telescopic spiral tube is evacuated, the telescopic spiral tube can rotate and fold. The telescopic folding tube is located inside the telescopic spiral tube, and the two are coaxially arranged. One end of the telescopic folding tube is fixed to the smooth tube and communicates with the interior of the smooth tube. An external suction pipe is fixed at one end to a telescopic spiral tube, and the end face of the telescopic spiral tube connected to it has an air hole. The other end of the external suction pipe is connected to a negative pressure extractor to extract gas from inside the telescopic spiral tube.

[0008] Preferably, the inner tube assembly includes: The inner suction pipe is fixed at one end to the telescopic folding pipe and connected at the other end to the non-contact negative pressure suction component. The inner suction pipe is located inside the outer suction pipe, and the two are coaxially arranged.

[0009] Preferably, the saline infiltration assembly includes: The saline chamber is a semi-tubular structure and is fixedly installed in the inner wall of the smooth tube. The saline chamber is located between two adjacent rows of hemispherical heads. The surface of the smooth tube corresponding to the saline chamber has rows of saline release holes, which are connected to the interior of the saline chamber. The saline tube has one end fixed and connected to the saline chamber, and the other end passes through the telescopic folding tube and the internal air extraction tube respectively. The compressed saline box and the end of the saline tube away from the saline chamber are connected by a central pipe, and the other end of the central pipe is connected to the compressed saline box. The compressed saline box is pressurized and can pump saline into the saline chamber and leach out from the saline release hole.

[0010] Preferably, the contactless negative pressure suction assembly includes: The sterile chamber has a hose fixedly installed at its upper end, and the suction end of the negative pressure extractor is fixedly connected to the hose. A contractile airbag is installed at the top of the inside of the sterile chamber and connected to a hose. The end of the internal suction tube away from the telescopic folding tube is connected to the side wall of the sterile chamber and communicates with the space between the inside of the sterile chamber and the contractile airbag. A disposable sputum bag is installed below the sterile chamber and under the contraction airbag; The duckbill valve is provided in two sets. One duckbill valve is installed between the disposable sputum bag and the sterile chamber, and the other duckbill valve is installed at the connection between the internal suction tube and the sterile chamber.

[0011] Preferably, the disposable sputum bag is installed in a spiral shape below the sterile cavity.

[0012] Preferably, the end of the tubing furthest from the sterile chamber is fitted with a universal connector for connecting a negative pressure extractor or an electric extractor.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This portable suction device for the emergency department features a suction head assembly. The hemispherical head for suctioning protrudes from the surface of the smooth tube. During suctioning, the smooth tube surface is less likely to come into contact with the trachea or pharyngeal wall, so the negative pressure will not damage the pharyngeal wall. The patient experiences less pain during suctioning. Even if the smooth tube rolls inside the patient's throat, it is the convex surface of the hemispherical head that comes into contact with the pharyngeal wall, resulting in relatively less friction. The rolling of the hemispherical head does not affect the suctioning effect, and the rows of hemispherical heads can completely absorb sputum in one go.

[0014] 2. This portable suction device for the emergency department, through the setting of a displacement tubing component, allows the telescopic spiral tube to roll at a certain angle during negative pressure suction, while the telescopic folding tube works in conjunction with the telescopic spiral tube to retract the smooth tube. In this way, under the action of negative pressure, the smooth tube can actively roll in the patient's throat to clear sputum. Compared with manual rotation and pulling, the amplitude is smaller and more regular, and the pain caused to the patient is relatively less. In addition, the rolling smooth tube greatly improves the suction efficiency of sputum.

[0015] 3. This portable suction device for the emergency department features a saline infiltration component. During suctioning, the saline can be pumped into the smooth tube by manually pressing the saline box. The pumped saline will seep out from the saline release hole, thus infiltrating the sputum on the inner wall of the throat and facilitating suction.

[0016] 4. This portable suction device for the emergency department features a non-contact negative pressure suction component. During suction, the sputum passes through two duckbill valves, preventing backflow. The suctioned sputum is stored in a disposable sputum bag, which can be removed after use, minimizing contamination of other parts. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a partial front view of the structure of the present invention; Figure 4 This is a partial structural cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the suction head assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the suction head assembly and the displacement tubing assembly of the present invention; Figure 7 This is a structural separation diagram of the contactless negative pressure suction assembly of the present invention; Figure 8 This is a cross-sectional view of the non-contact negative pressure suction assembly of the present invention; Figure 9 This is a cross-sectional view of the suction head assembly of the present invention.

[0018] In the diagram: 1. Negative pressure suction device; 2. Non-contact negative pressure suction assembly; 201. Sterile chamber; 202. Tube; 203. Contractile cuff; 204. Disposable sputum bag; 205. Duckbill valve; 3. Displacement tubing assembly; 301. Telescopic spiral tube; 302. Telescopic folding tube; 303. External suction tube; 304. Air port; 4. Inner tube assembly; 401. Internal suction tube; 5. Suction head assembly; 501. Smooth tube; 502. Hemispherical head; 503. Suction port; 6. Saline infiltration assembly; 601. Saline chamber; 602. Saline release port; 603. Saline tube; 604. Compressed saline box; 605. Centralized tube; 7. Universal connector. Detailed Implementation

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

[0020] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0021] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0023] like Figures 1-9 As shown, a portable suction device for the emergency department includes a negative pressure suction device 1, and further includes: The non-contact negative pressure suction component 2 utilizes the negative pressure suction of the negative pressure extractor 1; The displacement pipeline assembly 3 is connected at one end to the negative pressure extractor 1; Inner tube assembly 4 is located within displacement pipeline assembly 3, and one end of it is connected to non-contact negative pressure suction assembly 2. The suction head assembly 5 has one end externally connected to the displacement tubing assembly 3, which enables the suction head assembly 5 to extend, retract, and rotate. The inside of the suction head assembly 5 is connected to the inner tube assembly 4 to achieve negative pressure suction. The saline immersion component 6 has its spray end installed in the suction head assembly 5 to moisten the sputum outside the suction head assembly 5.

[0024] The negative pressure suction device 1 uses a manual suction tube, which does not require an external power supply when used in the emergency. Medical staff can quickly generate negative pressure by manually pulling it to meet the needs of emergency sputum suction. When the negative pressure suction device 1 is working, the negative pressure it generates is transmitted to the suction head assembly 5 through the displacement tubing assembly 3, which in turn drives the displacement tubing assembly 3 to move.

[0025] The non-contact negative pressure suction assembly 2, the displacement tubing assembly 3, the inner tube assembly 4, and the suction head assembly 5 are all made of disposable materials.

[0026] like Figures 1-4 As shown, the inner tube assembly 4 and the displacement tube assembly 3 are not limited to the length shown in the figure. They can be customized according to the actual suctioning needs. In addition, both the inner tube assembly 4 and the displacement tube assembly 3 are bendable, making it convenient to insert into the patient's larynx.

[0027] In an optional embodiment, the suction head assembly 5 includes: Smooth tube 501, with ball-shaped structures at both ends; The hemispherical head 502 is provided in multiple rows, and the multiple rows of hemispherical heads 502 are arranged in a circumferential array along the axis of the smooth tube 501. Several suction holes 503 are opened on the hemispherical head 502, and the end of the hemispherical head 502 away from the smooth tube 501 protrudes from the smooth tube 501, and the protruding end is a hemispherical structure.

[0028] In this embodiment, the smooth tube 501 is made of medical-grade PVC, while the externally installed hemispherical head 502 is made of silicone. Silicone is extremely soft, elastic, and has excellent biocompatibility, thus posing a low risk of damage to the airway mucosa.

[0029] The suction port 503 on the hemispherical head 502 has a multi-sided hole structure, and the surfaces of the hemispherical head 502 and the smooth tube 501 are coated with a high-polymer hydrophilic material, which becomes extremely lubricated when it comes into contact with water, which can greatly reduce the pain and risk of mucosal bleeding during the suctioning process.

[0030] In an optional embodiment, the displacement piping assembly 3 includes: The telescopic spiral tube 301 has one end fixed and sealed to the end of the smooth tube 501. When the other end of the telescopic spiral tube 301 is evacuated, the telescopic spiral tube 301 can rotate and fold. The telescopic folding tube 302 is located inside the telescopic spiral tube 301, and the two are coaxially arranged. One end of the telescopic folding tube 302 is fixed to the smooth tube 501 and communicates with the interior of the smooth tube 501. An external suction pipe 303 is fixed at one end to a telescopic spiral tube 301. An air hole 304 is provided on the end face of the telescopic spiral tube 301 connected to it. The other end of the external suction pipe 303 is connected to a negative pressure extractor 1 to extract gas from inside the telescopic spiral tube 301.

[0031] In this embodiment, the telescopic spiral tube 301 and the telescopic folding tube 302 are also made of medical-grade PVC. This type of PVC usually requires the addition of plasticizers. When the telescopic spiral tube 301 is manufactured, it is first twisted into a preset shape. When it shrinks and deforms later, it will twist at a certain angle according to the preset twist shape. With a moderate twist range, it can achieve the effect of moving and clearing sputum.

[0032] In an optional embodiment, the inner tube assembly 4 includes: The inner suction pipe 401 is fixed at one end to the telescopic folding pipe 302 and at the other end to the non-contact negative pressure suction assembly 2. The inner suction pipe 401 is located in the outer suction pipe 303 and the two are coaxially arranged.

[0033] In this embodiment, both the internal suction tube 401 and the external suction tube 303 are made of medical-grade elastic material, possessing excellent flexibility and anti-kinking properties. This ensures that the internal suction tube 401 remains unobstructed and stably transmits negative pressure to the suction head assembly 5 during the operation of the displacement tubing assembly 3. The diameter of the internal suction tube 401 is optimized according to suctioning requirements, ensuring sufficient suction flow while avoiding operational inconvenience caused by an excessively large diameter.

[0034] In an optional embodiment, the saline infiltration component 6 includes: The saline cavity 601 has a semi-tubular structure and is fixedly installed in the inner wall of the smooth tube 501. The saline cavity 601 is located between two adjacent rows of hemispherical heads 502. The smooth tube 501 has rows of saline release holes 602 on the surface corresponding to the saline cavity 601. The saline release holes 602 are connected to the interior of the saline cavity 601. The saline tube 603 has one end fixed and connected to the saline chamber 601, and the other end passes through the telescopic folding tube 302 and the internal air extraction tube 401 respectively. The compressed saline box 604 and the saline tube 603 are connected by a central tube 605 at the ends away from the saline chamber 601. The other end of the central tube 605 is connected to the compressed saline box 604. The compressed saline box 604 is pressurized and can pump saline into the saline chamber 601 and leach out from the saline release hole 602.

[0035] In this embodiment, the compressed saline box 604 is equipped with a saline inlet at its upper end. Its exterior is designed to be foldable. Before use, medical personnel can pre-inject an appropriate amount of saline through the inlet. During use, simply squeezing the box by hand will deliver the saline through the central tube 605 and saline tube 603 to the saline chamber 601, where it will then evenly leak out from the saline release hole 602. The diameter of the saline release hole 602 is precisely calculated to ensure that the leaked saline effectively moistens sputum without causing choking or other discomfort to the patient due to excessive flow. Simultaneously, the saline tube 603 is made of the same medical-grade elastic material as the internal suction tube 401, and is positioned using a special fixing buckle when passing through the telescopic folding tube 302 and the internal suction tube 401 to prevent entanglement or blockage during the extension and rotation of the tubing.

[0036] In an optional embodiment, the non-contact negative pressure suction assembly 2 includes: The sterile chamber 201 has a hose 202 fixedly installed at its upper end, and the suction end of the negative pressure extractor 1 is fixedly connected to the hose 202. The contractile airbag 203 is installed at the top of the inside of the sterile chamber 201 and connected to the hose 202. The end of the inner suction tube 401 away from the telescopic folding tube 302 is connected to the side wall of the sterile chamber 201 and communicates with the space between the inside of the sterile chamber 201 and the contractile airbag 203. A disposable sputum bag 204 is installed below the sterile cavity 201 and below the contraction airbag 203; The duckbill valve 205 is provided in two sets. One duckbill valve 205 is installed between the disposable sputum bag 204 and the sterile chamber 201, and the other duckbill valve 205 is installed at the connection between the internal suction tube 401 and the sterile chamber 201.

[0037] In this embodiment, the sterile chamber 201 is made of transparent medical-grade polycarbonate material, facilitating medical staff to observe the internal sputum collection and the working status of the contraction cuff 203. The contraction cuff 203 is made of highly elastic medical-grade silicone, and its edges are tightly fitted to the inner wall of the sterile chamber 201 through a sealing ring to ensure the airtightness of the negative pressure environment. When the negative pressure suction device 1 is working, the flexible tube 202 transmits negative pressure to the contraction cuff 203, causing it to contract upwards, thereby creating negative pressure in the space between the sterile chamber 201 and the contraction cuff 203. This negative pressure acts on the suction head assembly 5 through the inner suction tube 401 to achieve sputum suction. During aspiration, the duckbill valve 205 at the connection between the internal suction tube 401 and the sterile chamber 201 only allows sputum to enter the sterile chamber 201 unidirectionally from the internal suction tube 401, preventing sputum from flowing back into the internal suction tube 401 and causing contamination. The duckbill valve 205 between the disposable sputum bag 204 and the sterile chamber 201 opens when the contraction of the air bladder 203 generates negative pressure, allowing sputum in the sterile chamber 201 to enter the disposable sputum bag 204 under the combined action of gravity and negative pressure. When the air bladder 203 returns to its original position or aspiration stops, the duckbill valve 205 automatically closes, effectively preventing sputum from overflowing back into the sterile chamber 201 from the disposable sputum bag 204.

[0038] In an optional embodiment, the disposable sputum bag 204 is installed in a spiral form below the sterile cavity 201.

[0039] In this embodiment, the connection between the disposable sputum bag 204 and the sterile chamber 201 is designed as a spiral interface, with matching internal and external threads. During installation, simply align the spiral opening of the disposable sputum bag 204 with the interface at the bottom of the sterile chamber 201 and rotate clockwise 3-5 times to achieve a tight fixation. Disassembly is achieved by rotating in the opposite direction. This spiral installation method is not only convenient to operate and allows for quick replacement in emergencies, but the fit between the threads also effectively enhances the sealing of the connection, preventing sputum leakage. It also facilitates subsequent sealing and medical waste disposal.

[0040] In an optional embodiment, a universal connector 7 is installed at the end of the tubing 202 away from the sterile chamber 201 for connecting to a negative pressure extractor 1 or an electric extractor.

[0041] In this embodiment, the universal connector 7 adopts a standard Luer interface design, with precision anti-slip textures and sealing gaskets on its inner wall, enabling quick and tight connection with the suction ports of commonly available manual negative pressure suction devices 1 or electric suction devices. In emergency situations requiring higher negative pressure or continuous suction, medical personnel do not need to replace the entire suction device body; they only need to disconnect from the manual negative pressure suction device 1 via the universal connector 7 and connect to the electric suction device instead. This meets the suction needs of different conditions, greatly improving the device's versatility and emergency adaptability. Furthermore, the universal connector 7 is made of high-strength medical-grade ABS plastic, possessing excellent pressure resistance and corrosion resistance, ensuring it is not easily damaged during frequent connection and disconnection, and guaranteeing the stability of negative pressure transmission.

[0042] In use, medical staff first screw-install the disposable sputum bag 204 under the sterile chamber 201, and then connect the tubing 202 to the negative pressure suction device 1 or an electric suction device via the universal connector 7. Next, holding the external suction tube 303, they slowly and gently insert the smooth tube 501 of the suction head assembly 5 into the appropriate position in the throat through the patient's mouth or nose. After activating the negative pressure suction device 1, negative pressure is applied through the tubing 202 to the contraction bladder 203 within the sterile chamber 201, causing it to contract and creating negative pressure in the space between the sterile chamber 201 and the contraction bladder 203. This negative pressure is transmitted through the internal suction tube 401 and the telescopic folding tube 302 to the inside of the smooth tube 501, ultimately acting on the suction port 503 on the hemispherical head 502 to generate the suction force required for suctioning. Simultaneously, the external suction tube 303 draws air from inside the telescopic spiral tube 301, causing the telescopic spiral tube 301 to begin rotating and folding under the negative pressure. The rotation of the telescopic spiral tube 301 causes its fixed smooth tube 501 to roll together, while the telescopic folding tube 302, in conjunction with the folding of the telescopic spiral tube 301, causes the smooth tube 501 to retract to a certain extent. In this way, the smooth tube 501 can actively and rhythmically roll and retract in the patient's throat. During rolling, the hemispherical head 502 protruding from the surface of the smooth tube 501 experiences less friction when its hemispherical protrusion contacts the inner wall of the throat, and the suction port 503 can efficiently absorb sputum from multiple angles, avoiding the significant pain and potential harm caused to the patient by the manual rotation and pulling of traditional suction tubes. When dry sputum is difficult to suction, medical staff can manually press the compressed saline box 604. Under pressure, the saline solution in the compressed saline box 604 is pumped through the concentrator tube 605 and saline tube 603 to the saline cavity 601 on the inner wall of the smooth tube 501, and then seeps out through the saline release port 602, wetting the dry sputum on the inner wall of the throat, making it easier to suction. The suctioned sputum flows sequentially through the suction port 503, the inside of the smooth tube 501, the telescopic folding tube 302, and the internal suction tube 401 into the sterile chamber 201. At this point, the duckbill valve 205, located at the connection between the internal suction tube 401 and the sterile chamber 201, opens. After entering the sterile chamber 201, the sputum, under the influence of gravity and subsequent negative pressure suction, pushes open the duckbill valve 205 between the disposable sputum bag 204 and the sterile chamber 201, and is stored in the disposable sputum bag 204. Due to the one-way conduction characteristic of the duckbill valve 205, backflow of sputum is effectively prevented. After the suctioning operation is completed, the negative pressure suction device 1 is turned off, and the disposable sputum bag 204 is removed from below the sterile chamber 201 and disposed of properly. The entire suctioning process causes minimal contamination to the rest of the suction device, facilitating subsequent cleaning and disinfection.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0044] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable suction device for emergency departments, comprising a negative pressure suction device (1), characterized in that: Also includes: The non-contact negative pressure suction assembly (2) utilizes the negative pressure suction of the negative pressure extractor (1); The displacement pipeline assembly (3) is connected at one end to the negative pressure extractor (1); The inner tube assembly (4) is located in the displacement pipeline assembly (3), and one end of it is connected to the non-contact negative pressure suction assembly (2); The suction head assembly (5) is externally connected to the displacement tubing assembly (3) at one end. The displacement tubing assembly (3) enables the suction head assembly (5) to extend, retract, and rotate. The inside of the suction head assembly (5) is connected to the inner tube assembly (4) to achieve negative pressure suction. The saline immersion component (6) has its spray end installed in the suction head assembly (5) to moisten the sputum outside the suction head assembly (5).

2. The portable suction device for emergency departments according to claim 1, characterized in that: The suction head assembly (5) includes: The smooth tube (501) has ball-shaped ends; The hemispherical head (502) is provided in multiple rows. The multiple rows of hemispherical heads (502) are arranged in a circumferential array along the axis of the smooth tube (501). Several suction holes (503) are opened on the hemispherical head (502) through the inside and outside. The end of the hemispherical head (502) away from the smooth tube (501) protrudes out of the smooth tube (501), and the protruding end is a hemispherical structure.

3. The portable suction device for the emergency department according to claim 2, characterized in that: The displacement piping assembly (3) includes: Telescopic spiral tube (301), one end of telescopic spiral tube (301) is fixed and sealed to the end of smooth tube (501), and when the other end of telescopic spiral tube (301) is evacuated, telescopic spiral tube (301) can rotate and fold. The telescopic folding tube (302) is located inside the telescopic spiral tube (301), and the two are coaxially arranged. One end of the telescopic folding tube (302) is fixed to the smooth tube (501) and communicates with the interior of the smooth tube (501). An external suction pipe (303) is fixed at one end to a telescopic spiral tube (301), and an air hole (304) is opened on the end face of the telescopic spiral tube (301) connected to it. The other end of the external suction pipe (303) is connected to a negative pressure extractor (1) to extract the gas inside the telescopic spiral tube (301).

4. The portable suction device for emergency departments according to claim 3, characterized in that: The inner tube assembly (4) includes: The inner suction pipe (401) is fixed at one end to the telescopic folding pipe (302) and at the other end to the non-contact negative pressure suction assembly (2). The inner suction pipe (401) is located in the outer suction pipe (303) and the two are coaxially arranged.

5. The portable suction device for the emergency department according to claim 4, characterized in that: The saline infiltration component (6) includes: The saline cavity (601) has a semi-tubular structure and is fixedly installed in the inner wall of the smooth tube (501). The saline cavity (601) is located between two adjacent rows of hemispherical heads (502). The smooth tube (501) has rows of saline release holes (602) on the surface corresponding to the saline cavity (601). The saline release holes (602) are connected to the interior of the saline cavity (601). A saline tube (603) has one end fixed and connected to the saline chamber (601), and the other end passes through the telescopic folding tube (302) and the internal air extraction tube (401). The compressed saline box (604) and the saline tube (603) are connected by a central tube (605) at the end away from the saline chamber (601). The other end of the central tube (605) is connected to the compressed saline box (604). The compressed saline box (604) is pressurized and can pump saline into the saline chamber (601) and leach out from the saline release hole (602).

6. The portable suction device for the emergency department according to claim 5, characterized in that: The non-contact negative pressure suction assembly (2) includes: A sterile chamber (201) is provided with a hose (202) fixedly installed at the upper end of the sterile chamber (201), and the suction end of the negative pressure extractor (1) is fixedly connected to the hose (202). A contractile airbag (203) is installed at the top of the inside of the sterile chamber (201) and connected to a hose (202). The end of the inner suction tube (401) away from the telescopic folding tube (302) is connected to the side wall of the sterile chamber (201) and communicates with the space between the inside of the sterile chamber (201) and the contractile airbag (203). A disposable sputum bag (204) is installed below the sterile cavity (201) and below the contractile air bag (203); The duckbill valve (205) is provided in two sets. One duckbill valve (205) is installed between the disposable sputum bag (204) and the sterile chamber (201), and the other duckbill valve (205) is installed at the connection between the internal suction tube (401) and the sterile chamber (201).

7. The portable suction device for the emergency department according to claim 6, characterized in that: The disposable sputum bag (204) is installed in a spiral shape below the sterile cavity (201).

8. The portable suction device for emergency departments according to claim 7, characterized in that: The end of the hose (202) away from the sterile chamber (201) is equipped with a universal connector (7) for connecting a negative pressure extractor (1) or an electric extractor.

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