Nasopharynx cleaner

Abstract

The utility model relates to a nasopharynx cleaner which can effectively generate stable negative pressure through the arrangement of a suction device and a negative pressure device, and the negative pressure can penetrate into an oral cavity through a suction tube and an elbow to directly act on a nasopharynx part, so that the nasopharynx is deeply cleaned, secretions and impurities which are difficult to touch are removed, and the nasopharynx cleaner is convenient to use. The breathing quality is improved. Moreover, the negative pressure device can directly form negative pressure in a manual operation mode, flexible control over the negative pressure for cleaning is achieved, the negative pressure device can reset automatically so that the negative pressure for cleaning can be formed again, and the operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a nasopharyngeal cleaner. Background Art

[0002] In the fields of medicine and healthcare, maintaining the cleanliness of the respiratory tract is crucial for preventing and treating infections and other health problems. Especially for those suffering from acute upper respiratory tract infections, acute and chronic nasopharyngitis, chronic sinusitis, allergic rhinitis, and other respiratory diseases, it is very important to timely clean the nasopharyngeal secretions.

[0003] Currently, there are already some products on the market for cleaning the nasopharynx, such as rinsers and sprays. However, these products are difficult to directly clean the nasopharyngeal position and may not be able to effectively remove deep - seated secretions or impurities. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a nasopharyngeal cleaner that can solve the problem of being unable to directly clean the nasopharyngeal position.

[0005] The utility model provides a nasopharyngeal cleaner, which comprises:

[0006] A suction device, including a suction tube, an elbow and a storage shell. A storage cavity is arranged in the storage shell. One end of the suction tube is connected to the elbow, and the other end of the suction tube is inserted into and connected to the storage cavity; and

[0007] A negative - pressure device, including a negative - pressure cylinder, a negative - pressure piston, a resetting member and a one - way valve. The negative - pressure cylinder is connected to the storage cavity. The negative - pressure piston is slidably arranged on the negative - pressure cylinder. The resetting member is drivingly connected to the negative - pressure piston. The one - way valve is connected to the negative - pressure cylinder. When the resetting member drives the negative - pressure piston to slide, the one - way valve opens;

[0008] Wherein, when the negative - pressure piston slides on the negative - pressure cylinder against the acting force of the resetting member, the one - way valve closes, so that a negative pressure is formed in the negative - pressure cylinder, and then a negative pressure is formed in the storage cavity, enabling foreign objects to sequentially enter the storage cavity through the elbow and the suction tube.

[0009] Preferably, the nasopharyngeal cleaner further includes a conduction tube. One end of the conduction tube is connected to the storage cavity, and the other end of the conduction tube is connected to the negative - pressure cylinder.

[0010] Preferably, the storage shell is provided with a first side surface. The orientation of the first side surface is the same as the orientation of the end of the elbow away from the suction tube. The first side surface extends outward to form a guiding joint, and the guiding joint is respectively connected to the storage cavity and the negative - pressure cylinder.

[0011] Preferably, a partition is provided in the storage cavity. The partition divides the storage cavity into a first cavity and a second cavity which face each other. The end of the suction tube is exposed in the first cavity, and the guiding joint communicates with the second cavity.

[0012] Preferably, the suction tube is threadedly connected to the storage shell; or

[0013] The suction tube is snap - connected to the storage shell; or

[0014] The suction tube is melt - connected to the storage shell.

[0015] Preferably, the negative - pressure cylinder includes a cylinder body and a cylinder cover. An installation hole is provided on the cylinder cover;

[0016] The cylinder cover is detachably covered on the cylinder body. The negative - pressure piston passes through the installation hole, and the negative - pressure piston is in sealing abutment with the inner side wall of the cylinder body. The one - way valve is arranged at the bottom of the cylinder body.

[0017] Preferably, the negative - pressure piston includes a piston head, a connecting member and a handle which are connected in sequence. The piston head is located inside the cylinder body, the connecting member passes through the installation hole, and the handle is located outside the cylinder body; and / or

[0018] A grip is provided on the side of the cylinder cover away from the cylinder body.

[0019] Preferably, the reset member is located inside the negative - pressure cylinder. The reset member is sleeved on the negative - pressure piston. One end of the reset member abuts against the inner wall surface of the negative - pressure cylinder, and the other end of the reset member abuts against the negative - pressure piston.

[0020] Preferably, a weight - reducing groove is provided on the handle.

[0021] Preferably, the cross - section of the connecting member is cross - shaped, and the contour of the hole wall of the installation hole is adapted to the connecting member.

[0022] Implementing the present utility model has the following beneficial effects:

[0023] The present utility model relates to a nasopharyngeal cleaner. Through the arrangement of the suction device and the negative - pressure device, the present utility model can effectively generate a stable negative pressure, and through the suction tube and the elbow, it can penetrate into the oral cavity to directly act on the nasopharyngeal part, thereby deeply cleaning the nasopharynx, removing secretions and impurities that are difficult to reach, and improving the breathing quality. Moreover, the negative - pressure device can directly form a negative pressure through manual operation, realizing flexible control of the magnitude of the negative pressure for cleaning. And the negative - pressure device can also automatically reset to form the negative pressure for cleaning again, improving the operation convenience. Description of the Drawings

[0024] The exemplary embodiments of the present utility model will be described in more detail by combining the accompanying drawings, and the above and other objects, features and advantages of the present utility model will become more apparent. Among them, in the exemplary embodiments of the present utility model, the same reference numerals generally represent the same components.

[0025] Figure 1 is a schematic structural diagram of a nasopharyngeal cleaner in some embodiments of the present utility model;

[0026] Figure 2 is viewed from another angle Figure 1 schematic structural diagram of the nasopharyngeal cleaner shown;

[0027] Figure 3 is an exploded view of a nasopharyngeal cleaner in some embodiments of the present utility model;

[0028] Figure 4 is viewed from another angle Figure 3 exploded view of the nasopharyngeal cleaner shown;

[0029] Figure 5 is a schematic internal structure diagram of an aspiration device in some embodiments of the present utility model;

[0030] Figure 6 is a schematic internal structure diagram of a negative pressure device in some embodiments of the present utility model. Detailed Embodiments

[0031] Embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art.

[0032] It should be understood that although the terms "first", "second", "third", etc. may be used in the present utility model to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0034] Unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Figure 1 and Figure 2 Fig. shows the nasopharyngeal cleaner 10 in some embodiments of the present utility model. The nasopharyngeal cleaner 10 is used to clean the nasopharynx, specifically by means of vacuum adsorption.

[0036] As Figure 1 shown, the nasopharyngeal cleaner 10 includes a suction device 1 and a negative pressure device 2, and the negative pressure device 2 is communicated with the suction device 1. It can be understood that the suction device 1 is responsible for guiding and accommodating foreign matters in the nasopharynx, while the negative pressure device 2 generates and controls negative pressure to ensure that foreign matters can be effectively sucked into the suction device 1.

[0037] As Figures 1 to 5 shown, the suction device 1 includes a suction tube 11, an elbow 12 and a storage shell 13. A storage cavity 131 is arranged in the storage shell 13. One end of the suction tube 11 is communicated with the elbow 12, and the other end of the suction tube 11 is inserted into and communicated with the storage cavity 131.

[0038] It can be understood that the setting of the elbow 12 takes into account the contours of the human oral cavity and nasopharyngeal positions. The suction tube 11 can drive the elbow 12 to penetrate from the oral cavity. When the suction tube 11 is in a horizontal or nearly horizontal posture, the bending degree of the elbow 12 itself enables it to approach the nasopharyngeal part, improving the operation convenience of the product. The storage cavity 131 inside the storage shell 13 is used to collect foreign matters entering through the suction tube 11.

[0039] It should be noted that the nasopharynx is located behind the soft palate in the oral cavity. Therefore, the setting of the elbow 12 enables the nasopharynx behind the soft palate to be cleaned through the elbow 12 without the suction tube 11 interfering with the position of the soft palate, etc., improving the convenience of use.

[0040] Please refer to Figures 2 to 4 , and also refer to Figure 6 , the negative pressure device 2 includes a negative pressure cylinder 21, a negative pressure piston 22, a reset member 23 and a one-way valve 24. The negative pressure cylinder 21 communicates with the storage cavity 131. The negative pressure piston 22 is slidably arranged on the negative pressure cylinder 21. The reset member 23 is drivingly connected to the negative pressure piston 22. The one-way valve 24 communicates with the negative pressure cylinder 21. When the reset member 23 drives the negative pressure piston 22 to slide, the one-way valve 24 opens.

[0041] It can be understood that the negative pressure cylinder 21 is a container, and its main function is to provide a sealed space to accommodate the sliding of the negative pressure piston 22, and together with the communication with the storage cavity 131, form a complete pressure control system.

[0042] The negative pressure piston 22 is configured to have a shape that can closely cooperate with the inner wall of the negative pressure cylinder 21. When the user pulls the piston 22 to overcome the elastic force of the reset member 23, the volume of the gas in the negative pressure cylinder 21 expands and the pressure decreases, forming a negative pressure.

[0043] The reset member 23 can be various components in the prior art that can undergo elastic phase change, such as a spring or elastic rubber, etc. When the piston 22 is pulled, the deformation amount of the reset member 23 increases and elastic potential energy is stored. When the piston 22 is released, the restoring force of the reset member 23 pushes the piston 22 back to its original position, which helps to rebalance the air pressure in the negative pressure cylinder 21 so as to form a negative pressure again during the next cleaning of the nasopharynx.

[0044] The setting of the one-way valve 24 enables air to only enter the outside from the negative pressure cylinder 21 and not flow in through the one-way valve 24. When the negative pressure piston 22 is pulled, the pressure in the negative pressure cylinder 21 decreases and the one-way valve 24 closes to prevent outside air from flowing in and destroying the negative pressure environment. When the piston 22 is pushed back to its original position by the reset member 23, the one-way valve 24 opens to balance the pressure in the negative pressure cylinder 21. During use, when the negative pressure piston 22 slides on the negative pressure cylinder 21 against the acting force of the reset member 23, the one-way valve 24 closes, so that a negative pressure is formed in the negative pressure cylinder 21, and then a negative pressure is formed in the storage cavity 131, enabling foreign objects to sequentially enter the storage cavity 131 through the elbow 12 and the suction tube 11.

[0045] It should be noted that when the user pulls the negative pressure piston 22 to overcome the elastic force of the reset member 23 and makes the negative pressure piston 22 slide in the negative pressure cylinder 21, the one-way valve 24 will automatically close to prevent external air from entering. As the piston 22 moves, the gas volume in the negative pressure cylinder 21 increases and the pressure decreases, forming a negative pressure. This negative pressure is transmitted to the suction tube 11 through the connected storage cavity 131, thereby generating suction force in the nasopharynx to suck foreign objects into the elbow 12 and further into the storage cavity 131 through the suction tube 11.

[0046] When the negative pressure piston 22 is released, the restoring force of the reset member 23 will push the piston 22 to move back to its original position. At this time, the one-way valve 24 opens, allowing the negative pressure cylinder 21 to communicate with the outside world to achieve pressure balance and prepare for the next foreign object cleaning.

[0047] As Figures 1 to 4 shown, in some embodiments of the nasopharyngeal cleaner 10, the nasopharyngeal cleaner 10 further includes a conducting tube 3. One end of the conducting tube 3 communicates with the storage cavity 131, and the other end of the conducting tube 3 communicates with the negative pressure cylinder 21.

[0048] It can be understood that the setting of the conducting tube 3 enables the airflow entering from the suction tube 11 to smoothly pass through the storage cavity 131 and directly reach the negative pressure cylinder 21 via the conducting tube 3, ensuring the coherence and stability of the airflow and improving the cleaning efficiency. By directly connecting the storage cavity 131 and the negative pressure cylinder 21 through the conducting tube 3, the conducting tube 3 minimizes the energy loss of the airflow during transmission, ensures the effective utilization of the negative pressure, and enhances the suction effect. Since the conducting tube 3 can ensure the rapid transmission of the airflow, even when dealing with viscous or stubborn secretions, it can maintain sufficient suction force to ensure thorough cleaning.

[0049] As Figure 3 and Figure 5 shown, in some embodiments of the nasopharyngeal cleaner 10, a first side surface 132 is provided on the storage shell 13. The orientation of the first side surface 132 is the same as the orientation of the end of the elbow 12 away from the suction tube 11. The first side surface 132 extends outward to form a guiding joint 133, and the guiding joint 133 communicates with the storage cavity 131 and the negative pressure cylinder 21 respectively.

[0050] Understandably, the orientation of the first side surface 132 is consistent with the direction of the end of the elbow 12 away from the suction tube 11. This design takes into account ergonomics and usage habits, ensuring that during the cleaning process, the direction of the guiding joint 133 is naturally coordinated with the suction path. Specifically, during actual use, the end of the elbow 12 away from the suction tube 11 is upward because the nasopharynx is located above the oral cavity. In this way, the guiding joint 133 will also be located above the storage shell 13, preventing foreign objects from being directly discharged from the bottom of the storage cavity 131 as soon as they are inhaled into the storage cavity 131, ensuring the normal use of the present utility model.

[0051] Furthermore, the guiding joint 133 can be configured to be directly formed on the storage shell 13 by an integrally molded manner. In this way, the connection strength between the storage shell 13 and the guiding joint 133 can be improved, enhancing the durability of the product.

[0052] As Figure 3 shown, in some embodiments of the nasopharyngeal cleaner 10, a partition 1311 is provided in the storage cavity 131. The partition 1311 divides the storage cavity 131 into a first cavity 1312 and a second cavity 1313 that communicate with each other. The end of the suction tube 11 is exposed in the first cavity 1312, and the guiding joint 133 communicates with the second cavity 1313.

[0053] Understandably, the partition 1311 plays a role of isolation, preventing foreign objects inhaled into the storage cavity 131 from entering the guiding joint 133 under the drive of gas. The double-cavity design avoids the chaos of air flow and inhaled substances through physical isolation, making the cleaning process more orderly and improving the cleaning efficiency and quality.

[0054] The connection method between the suction tube 11 and the storage shell 13 includes at least the following several implementation methods:

[0055] As Figure 5 shown, the first implementation method - the suction tube 11 is threadedly connected to the storage shell 13. Understandably, the threaded connection realizes the firm connection between the two by designing internal and external threads at the interface of the suction tube 11 and the storage shell 13. The threaded connection method makes the connection between the two stable, with good sealing performance and not easy to fall off.

[0056] The second implementation method - the suction tube 11 is snap-connected to the storage shell 13. Understandably, the snap connection realizes quick connection and disconnection by setting a card slot and a snap on the interface of the suction tube 11 and the storage shell 13. This implementation method has the advantages of simple operation and fast connection speed.

[0057] The third implementation method - the suction tube 11 and the storage shell 13 are melt-connected. Understandably, melt connection is a permanent connection method. By heating, the materials at the contact part of the suction tube 11 and the storage shell 13 are melted, and a solid whole is formed after cooling. This connection method has relatively high connection reliability, and a good seal can be formed at the melting position.

[0058] As Figures 2 to 4 and Figure 6 shown, in some embodiments of the nasopharyngeal cleaner 10, the negative pressure cylinder 21 includes a cylinder body 211 and a cylinder cover 212. An installation hole 2121 is provided on the cylinder cover 212;

[0059] The cylinder cover 212 is detachably covered on the cylinder body 211. The negative pressure piston 22 passes through the installation hole 2121. The negative pressure piston 22 is in sealing contact with the inner side wall of the cylinder body 211. The one-way valve 24 is arranged at the bottom of the cylinder body 211.

[0060] Understandably, the cylinder body 211 provides a sliding space for the negative pressure piston 22. The cylinder body 211 can be configured to be made of wear-resistant materials to ensure good airtightness and structural stability during repeated use. The cylinder cover 212 is used to jointly form a cylindrical space with the cylinder body 211 after assembly. A detachable connection method is adopted between the cylinder cover 212 and the cylinder body 211, which is convenient for cleaning and maintenance. The size and shape of the installation hole 2121 match the negative pressure piston 22 to ensure that the negative pressure piston 22 can slide smoothly. The negative pressure piston 22 is configured to be in close contact with the inner wall of the cylinder body 211 to form an effective seal. When the piston 22 slides in the cylinder body 211, the air pressure inside the cylinder body 211 can be effectively changed, thereby generating and controlling negative pressure.

[0061] As Figure 3 、 Figure 4 and Figure 6 shown, in some embodiments of the nasopharyngeal cleaner 10, the negative pressure piston 22 includes a piston head 221, a connecting piece 222 and a handle 223 connected in sequence. The piston head 221 is located inside the cylinder body 211. The connecting piece 222 passes through the installation hole 2121. The handle 223 is located outside the cylinder body 211.

[0062] Understandably, the piston head 221 is located inside the cylinder body 211 and is the part where the negative pressure piston 22 is in direct contact with the inner wall of the cylinder body 211. It is used to change the air pressure inside the cylinder body 211 when sliding. The shape and size of the piston head 221 are designed to be able to fit closely with the inner wall of the cylinder body 211 to ensure that the air inside the cylinder body 211 does not leak during the sliding of the piston 22 and maintain good airtightness. The handle 223 is located outside the cylinder body 211, which is convenient for the user to grip. The piston head 221 can be correspondingly driven to move through the handle 223.

[0063] AsFigures 2 to 4 and Figure 6 As shown in Figure 6 , a handle 2122 is provided on the side of the cylinder cover 212 away from the cylinder body 211.

[0064] Understandably, the handle 2122 is provided on the side of the cylinder cover 212 away from the cylinder body 211, that is, the top or side of the cylinder cover 212, depending on the design. Such a position selection facilitates the user to firmly hold the cylinder cover 212 when operating the negative pressure piston 22, providing better control force and operation accuracy.

[0065] Such as Figure 3 , Figure 4 and Figure 6 As shown in Figure 6 , in some embodiments of the nasopharyngeal cleaner 10, the reset member 23 is located inside the negative pressure cylinder 21. The reset member 23 is sleeved on the negative pressure piston 22. One end of the reset member 23 abuts against the inner wall surface of the negative pressure cylinder 21, and the other end of the reset member 23 abuts against the negative pressure piston 22.

[0066] Understandably, the reset member 23 is usually made of an elastic material, such as a metal spring or an elastic element made of a synthetic material, to ensure that it has sufficient elastic force to pull the negative pressure piston 22 back to its original position when necessary. Setting the reset member 23 inside the negative pressure cylinder 21 can protect the reset member 21 and improve the durability of the product.

[0067] Such as Figure 4 and Figure 6 As shown in Figure 6 , in some embodiments of the nasopharyngeal cleaner 10, a weight-reducing groove 2231 is provided on the handle 223.

[0068] Understandably, by providing the weight-reducing groove 2231 on the handle 223, the material usage of the handle is reduced, thereby reducing the total weight of the nasopharyngeal cleaner 10, making the device more portable and facilitating long-term operation without causing hand fatigue. Of course, the setting of the weight-reducing groove 2231 can also reduce the production materials of the product and lower the production and processing cost of the product.

[0069] Such as Figure 3 , Figure 4 and Figure 6 As shown in Figure 6 , in some embodiments of the nasopharyngeal cleaner 10, the cross-section of the connecting member 222 is cross-shaped, and the hole wall profile of the mounting hole 2121 is adapted to the connecting member 222.

[0070] Understandably, the connecting member 222 configured with a cross-shaped cross-section is mainly to increase the contact area between it and the mounting hole 2121, thereby improving the rigidity and stability of the overall structure. This design can effectively prevent the connecting member 222 from rotating during use and ensure the firmness of the connection between the piston head 221 and the handle 223.

[0071] Implementing the present utility model has the following beneficial effects:

[0072] The present utility model relates to a nasopharyngeal cleaner. Through the settings of a suction device and a negative pressure device, the present utility model can effectively generate stable negative pressure, and through a suction tube and an elbow, it can penetrate into the oral cavity to directly act on the nasopharyngeal part, thereby deeply cleaning the nasopharynx, removing secretions and impurities that are difficult to reach, and improving the breathing quality. Moreover, the negative pressure device can directly form negative pressure by manual operation, realizing flexible control of the magnitude of the negative pressure for cleaning, and the negative pressure device can also automatically reset to form the negative pressure for cleaning again, improving the operation convenience.

[0073] The solution of the present utility model has been described in detail with reference to the accompanying drawings above. In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily essential to the present utility model. In addition, it can be understood that the steps in the method embodiments of the present utility model can be adjusted, combined, and deleted according to actual needs, and the modules in the device embodiments of the present utility model can be combined, divided, and deleted according to actual needs.

[0074] The various embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skilled persons in the technical field to understand the embodiments disclosed herein.

Claims

1. A nasopharyngeal cleaner, characterized in that: include: A suction device, comprising a suction tube, an elbow and a storage shell, wherein a storage cavity is provided in the storage shell, one end of the suction tube is connected to the elbow, and the other end of the suction tube is inserted into and connected to the storage cavity; and The negative pressure device comprises a negative pressure cylinder, a negative pressure piston, a reset member and a one-way valve, wherein the negative pressure cylinder is connected to the receiving chamber, the negative pressure piston is slidably arranged on the negative pressure cylinder, the reset member is drivingly connected to the negative pressure piston, the one-way valve is connected to the negative pressure cylinder, and the one-way valve is opened when the reset member drives the negative pressure piston to slide; When the negative pressure piston overcomes the force of the reset member and slides on the negative pressure cylinder, the one-way valve is closed, thereby forming negative pressure in the negative pressure cylinder, and then the storage chamber forms negative pressure, so that foreign matter can enter the storage chamber through the elbow and the suction tube in sequence.

2. The nasopharyngeal cleaner according to claim 1, characterized in that: The nasopharyngeal cleaner further comprises a conducting tube, one end of which is connected to the receiving cavity, and the other end of which is connected to the negative pressure cylinder.

3. The nasopharyngeal cleaner according to claim 1 or 2, characterized in that: The storage shell is provided with a first side surface, the orientation of the first side surface is the same as the orientation of the end of the elbow away from the suction tube, and the first side surface extends outward to form a guide joint, and the guide joint is respectively connected to the storage cavity and the negative pressure cylinder.

4. The nasopharyngeal cleaner according to claim 3, characterized in that: A partition is provided in the storage cavity, and the partition divides the storage cavity into a first cavity and a second cavity. The end of the suction tube is exposed in the first cavity, and the guide joint is connected to the second cavity.

5. The nasopharyngeal cleaner according to claim 1, characterized in that: The suction tube is threadedly connected to the storage shell; or The suction tube is snap-connected to the storage shell; or The suction tube and the storage shell are fused and connected.

6. The nasopharyngeal cleaner according to claim 1, characterized in that: The negative pressure cylinder comprises a cylinder body and a cylinder cover, and the cylinder cover is provided with a mounting hole; The cylinder cover is detachably mounted on the cylinder body, the negative pressure piston penetrates the mounting hole, the negative pressure piston is sealed against the inner wall of the cylinder body, and the one-way valve is arranged at the bottom of the cylinder body.

7. The nasopharyngeal cleaner according to claim 6, characterized in that: The negative pressure piston comprises a piston head, a connecting piece and a handle which are connected in sequence, the piston head is located in the cylinder, the connecting piece passes through the mounting hole, and the handle is located outside the cylinder; and / or The cylinder cover is provided with a handle on the side away from the cylinder body.

8. The nasopharyngeal cleaner according to any one of claims 1, 6 or 7, characterized in that: The reset member is located in the negative pressure cylinder, and is sleeved on the negative pressure piston. One end of the reset member is supported on the inner wall surface of the negative pressure cylinder, and the other end of the reset member is supported on the negative pressure piston.

9. The nasopharyngeal cleaner according to claim 7, characterized in that: A weight-reducing groove is provided on the handle.

10. The nasopharyngeal cleaner according to claim 7, characterized in that: The cross section of the connecting piece is cross-shaped, and the hole wall profile of the mounting hole is adapted to the connecting piece.

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