Negative pressure recovery type paranasal sinus flushing and sucking device

Abstract

The utility model aims to provide a negative pressure recovery type paranasal sinus flushing and sucking device which comprises a shell and a flushing and sucking assembly, a clean liquid chamber and a waste liquid chamber which are mutually independent are arranged in the shell, a spray head and a flushing pipe are arranged at the top of the shell, one end of the flushing pipe extends into the spray head, and a recovery groove is formed between the outer side wall of the flushing pipe and the inner side wall of the spray head. The recovery tank is communicated with the waste liquid chamber, the clean liquid chamber is communicated with the spray head through the flushing pipe, the flushing and sucking assembly comprises an atomizing part, an air pump and a button, the atomizing part is arranged in the clean liquid chamber, the air outlet end of the atomizing part extends into the flushing pipe and is communicated with the flushing pipe, and a suction hole and an air leakage hole are further formed in the shell. The suction hole is communicated with the negative pressure end of the air pump and the waste liquid chamber, the air leakage hole and the air inlet end of the atomization piece are both communicated with the positive pressure end of the air pump, and the button is arranged on the outer side wall of the shell in a sliding mode and used for blocking the air leakage hole when stressed.

Description

Technical Field

[0001] This utility model relates to the technical field of nasal irrigators, and in particular to a negative pressure recovery sinus irrigation device. Background Technology

[0002] A nasal irrigator is a device used to clean the nasal cavity. It removes dust, pollen, secretions, and other irritants by gently rinsing the nasal passages. This cleaning method helps relieve symptoms such as nasal congestion and runny nose caused by allergic rhinitis, colds, sinusitis, etc.

[0003] Chinese patent document CN203885833U discloses a portable electric spray nasal irrigator, which includes the following design: The nasal irrigator comprises a main unit, a medicine tank assembly mounted on the main unit, and an air pump driven by a drive circuit to generate airflow. The medicine tank assembly includes a lower and upper shell of the medicine storage tank, a nozzle connection shell, a silicone nozzle, a medicine delivery pipe, an atomizer, a medicine chamber, and an outer chamber surrounding the medicine chamber. The atomizer is located within the airflow injection pipe. Airflow passes through the airflow injection pipe and connects to the medicine delivery pipe of the medicine tank assembly. The medicine in the medicine storage chamber is transferred to the atomizer by the negative pressure of the airflow, and the medicine particles are sprayed into the nasal cavity through the jet pipe. The outer layer of the nozzle of the medicine tank assembly guides the cleaned dirt into the outer chamber of the medicine tank for storage. Thus, the problem of collecting waste liquid is solved by the outer chamber.

[0004] However, existing waste fluid collection methods have the following shortcomings in practical use: First, when the medication particles are sprayed into the nasal cavity, the waste fluid is guided by the outer layer of the nozzle of the medication tank assembly into the outer compartment of the medication tank for storage. Under gravity, the waste fluid flows from the outer layer of the nozzle into the outer compartment, resulting in slow and incomplete recovery. Second, during rinsing, the rinsing fluid flows outwards, while the waste fluid flows downwards, causing mutual convection and interference, hindering effective rinsing. Therefore, to facilitate user operation, the negative pressure recovery sinus irrigation device of this application is proposed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a negative pressure recovery sinus irrigation device that can quickly and thoroughly recover waste liquid and is easy for users to use.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A negative pressure recovery sinus irrigation device, comprising:

[0008] The housing contains independent clean liquid chambers and waste liquid chambers. A nozzle and a rinsing pipe are located on the top of the housing. One end of the rinsing pipe extends into the nozzle, forming a recovery trough between the outer wall of the rinsing pipe and the inner wall of the nozzle. The recovery trough communicates with the waste liquid chamber. The clean liquid chamber communicates with the nozzle via the rinsing pipe.

[0009] The flushing assembly includes an atomizing element, an air pump, and a button. The atomizing element is disposed in the clean liquid chamber, and the air outlet of the atomizing element extends into and communicates with the flushing pipe. The housing also has a suction hole and a vent hole. The suction hole is connected to the negative pressure end of the air pump and the waste liquid chamber, respectively. The vent hole and the air inlet end of the atomizing element are both connected to the positive pressure end of the air pump. The button is slidably disposed on the outer side wall of the housing and is used to block the vent hole when force is applied.

[0010] Optionally, the atomizing component includes a vent pipe and an atomizing cylinder. The vent pipe is disposed on the inner wall of the clean liquid chamber, and one end of the vent pipe extends into the flushing pipe to communicate with the flushing pipe. The atomizing cylinder is sleeved on the outer wall of the vent pipe, and an atomizing hole is opened on one end of the atomizing cylinder located in the flushing pipe. A suction gap is formed between the inner wall of the atomizing cylinder and the outer wall of the vent pipe.

[0011] Optionally, the outer shell includes a bottom shell, a snap-on shell, and a top shell. The bottom shell has a first clean liquid tank and a first waste liquid tank. The snap-on shell has a second clean liquid tank and a second waste liquid tank. The snap-on shell is snapped onto the bottom shell so that the inner sidewalls of the first clean liquid tank and the second clean liquid tank together form the clean liquid chamber, and the inner sidewalls of the first waste liquid tank and the second waste liquid tank together form the waste liquid chamber. The top shell is snapped onto the side of the snap-on shell away from the bottom shell. The nozzle is disposed on the top shell. The rinsing pipe is disposed on the snap-on shell and passes through the top shell. The suction hole and the vent hole are both located inside the bottom shell.

[0012] Optionally, a cover is also attached to the housing, and the top housing and the nozzle are both located inside the cover.

[0013] Optionally, a sealing ring is provided between the buckle shell and the bottom shell and the top shell respectively.

[0014] Optionally, a circuit board is also provided inside the bottom shell, and the circuit board is electrically connected to the air pump.

[0015] Optionally, a vent pipe is provided inside the vent hole.

[0016] Optionally, the inner diameter of the vent pipe gradually decreases towards the flushing pipe.

[0017] Optionally, the minimum inner diameter of the vent pipe is smaller than the inner diameter of the vent pipe.

[0018] Optionally, a block is provided on the side of the button near the vent hole, and the block is aligned with the vent pipe.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] Firstly, during use, the nozzle can reliably collect the generated waste liquid without leaving the inner wall of the user's nasal cavity, making it convenient to use;

[0021] Secondly, compared with the existing technology that relies on the natural flow of waste liquid under its own gravity to achieve recycling, this application uses the negative pressure generated by the negative pressure end of the air pump to quickly and thoroughly draw the waste liquid back into the waste liquid chamber. Moreover, the negative pressure generated by the negative pressure end of the air pump is continuous, which improves the reliability of waste liquid collection.

[0022] Third, the atomizing element can be started and stopped by pressing the button, making it convenient for users to control the equipment to start and stop rinsing. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a negative pressure recovery sinus irrigation device according to one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of a negative pressure recovery sinus irrigation device is shown.

[0026] Figure 3 for Figure 2 A partial enlarged structural diagram of A;

[0027] Figure 4 This is a partial cross-sectional structural diagram of an atomizing component according to one embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the bottom shell structure according to one embodiment of the present invention;

[0029] Figure 6This is a schematic diagram of the snap-fit ​​shell according to one embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Negative pressure recovery sinus irrigation device; 100. Outer shell; 200. Irrigation and suction assembly; 110. Clean liquid chamber; 120. Waste liquid chamber; 310. Nozzle; 320. Irrigation pipe; 311. Recovery tank; 210. Atomizing component; 220. Air pump; 230. Button; 130. Suction port; 140. Vent hole; 211. Vent pipe; 212. Atomizing cylinder; 2121. Atomizing hole; 213. Suction gap; 151. Bottom shell; 152. Cover; 153. Top shell; 1511. First clean liquid tank; 1512. First waste liquid tank; 1521. Second clean liquid tank; 1522. Second waste liquid tank; 1523. Through hole; 154. Cover; 155. Sealing ring; 240. Circuit board; 250. Button; 160. Vent pipe; 260. Block. Detailed Implementation

[0032] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0033] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0036] like Figure 1 and Figure 2 As shown, a negative pressure recovery sinus irrigation device 10 includes a housing 100 and an irrigation and suction assembly 200. The housing 100 has an independent clean liquid chamber 110 and a waste liquid chamber 120. A nozzle 310 and a flushing pipe 320 are disposed on the top of the housing 100. One end of the flushing pipe 320 extends into the nozzle 310, forming a recovery groove 311 between the outer wall of the flushing pipe 320 and the inner wall of the nozzle 310. The recovery groove 311 communicates with the waste liquid chamber 120. The clean liquid chamber 110 communicates with the nozzle 310 through the flushing pipe 320. The irrigation and suction assembly 200 includes an atomizing element. 210, air pump 220 and button 230. The atomizing element 210 is disposed in the clean liquid chamber 110, and the air outlet end of the atomizing element 210 extends into the rinsing pipe 320 and communicates with the rinsing pipe 320. The housing 100 is also provided with a suction hole 130 and a vent hole 140. The suction hole 130 is respectively connected to the negative pressure end C of the air pump 220 and the waste liquid chamber 120. The vent hole 140 and the air inlet end of the atomizing element 210 are both connected to the positive pressure end B of the air pump 220. The button 230 is slidably disposed on the outer side wall of the housing 100. The button 230 is used to block the vent hole 140 when force is applied.

[0037] It should be noted that when the air pump 220 starts, that is, the negative pressure end C of the air pump 220 draws in air and the positive pressure end B releases air. Since the nozzle 310, the recovery tank 311, the waste liquid chamber 120, the suction port 130, and the negative pressure end C of the air pump 220 are connected in sequence, a stable suction negative pressure will be formed on the nozzle 310 after the equipment starts. Furthermore, the nozzle 310, the flushing pipe 320, the atomizing element 210, and the positive pressure end B of the air pump 220 are connected in sequence, and the vent 140 is also connected to the positive pressure end B of the air pump 220. Therefore, after the equipment starts, since the vent 140 is connected to the outside for venting, the gas ejected from the positive pressure end B of the air pump 220 will flow out through the vent 140. When button 230 is pressed to block the vent 140, the gas ejected from the positive pressure end B of air pump 220 flows through atomizing element 210, causing atomizing element 210 to atomize the clean liquid in clean liquid chamber 110 into fine droplets. These fine droplets are sprayed out through flushing pipe 320 and nozzle 310, thereby flushing the user's nasal cavity. The waste liquid generated after flushing falls along the inner wall of nozzle 310 and into nozzle 310. Due to the negative pressure of air pump 220, the waste liquid is sucked from the recovery tank 311 into waste liquid chamber 120. When the pressure of button 230 is released, the gas ejected from the positive pressure end B of air pump 220 flows out of the vent 140 again, so atomizing element 210 stops atomizing. Pressing button 230 can be used to start and stop atomizing element 210 for pulse flushing. Thus, compared to existing nasal irrigator structures, the negative pressure recovery sinus aspirator 10 of this application has at least the following advantages: First, during use, the nozzle 310 does not need to leave the inner wall of the user's nasal cavity to reliably collect the generated waste liquid, making it convenient to use; Second, compared to the existing technology that achieves recovery through the natural flow of waste liquid under its own gravity, this application uses the negative pressure generated by the negative pressure end C of the air pump 220 to quickly and thoroughly draw the waste liquid back into the waste liquid chamber 120, and the negative pressure generated by the negative pressure end C of the air pump 220 is continuous, improving the reliability of waste liquid collection; Third, the atomizing element 210 can be started and stopped by pressing the button 230, making it convenient for the user to control the device to start and stop rinsing.

[0038] like Figures 2 to 4 As shown, in one embodiment, the atomizing component 210 includes a vent pipe 211 and an atomizing cylinder 212. The vent pipe 211 is disposed on the inner wall of the clean liquid chamber 110. One end of the vent pipe 211 extends into the rinsing pipe 320 to communicate with the rinsing pipe 320. The atomizing cylinder 212 is sleeved on the outer wall of the vent pipe 211. An atomizing hole 2121 is opened on one end of the atomizing cylinder 212 located in the rinsing pipe 320. A suction gap 213 is formed between the inner wall of the atomizing cylinder 212 and the outer wall of the vent pipe.

[0039] It should be noted that the bottom end of the suction slit 213 is located on the inner bottom wall of the clean liquid chamber 110, and the top end of the suction slit 213 extends to the atomizing hole 2121. The end of the atomizing hole 2121 is the air outlet end of the atomizing element 210, and the end of the vent pipe 211 away from the atomizing hole 2121 is the air inlet end of the atomizing element 210. Therefore, the end of the vent pipe 211 away from the atomizing hole 2121 is connected to the positive pressure end B of the air pump 220 and the vent hole 140. Thus, when button 230 is pressed to block vent hole 140, the gas ejected from positive pressure end B of air pump 220 flows through vent pipe 211 and atomizing hole 2121 of atomizing cylinder 212. Because the gas has a high flow velocity when flowing through atomizing hole 2121, the pressure there is low. The clean liquid in clean liquid chamber 110 is drawn into atomizing hole 2121 along suction gap 213, and then dispersed by the flowing gas to form a mist of fine droplets. Finally, the mist of fine droplets is sprayed out through flushing pipe 320 and nozzle 310 to flush the inner wall of the user's nasal cavity.

[0040] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in one embodiment, the outer shell 100 includes a bottom shell 151, a snap-fit ​​shell 152, and a top shell 153. The bottom shell 151 has a first clean liquid tank 1511 and a first waste liquid tank 1512. The snap-fit ​​shell 152 has a second clean liquid tank 1521 and a second waste liquid tank 1522. The snap-fit ​​shell 152 is snapped onto the bottom shell 151 so that the inner wall of the first clean liquid tank 1511 and the inner wall of the second clean liquid tank 1521 together form a clean liquid tank. The liquid chamber 110 is formed such that the inner wall of the first waste liquid tank 1512 and the inner wall of the second waste liquid tank 1522 together form the waste liquid chamber 120. The top shell 153 is fastened to the side of the fastening shell 152 away from the bottom shell 151. The nozzle 310 is set on the top shell 153. The flushing pipe 320 is set on the fastening shell 152 and passes through the top shell 153. The suction hole 130 and the vent hole 140 are both located inside the bottom shell 151.

[0041] It should be noted that, in order to facilitate the filling of clean liquid into the clean liquid chamber 110 and ensure that the generated waste liquid reliably flows into the waste liquid chamber 120, the outer shell 100 is designed as a detachable, split structure. Specifically, when the snap-on shell 152 is snapped onto the bottom shell 151, the first clean liquid tank 1511 and the second clean liquid tank 1521 together form a closed clean liquid chamber 110, and the first waste liquid tank 1512 and the second waste liquid tank 1522 together form a closed waste liquid chamber 120. The rinsing pipe 320 is located at the top of the snap-on shell 152, and the second clean liquid tank 1521 communicates with the rinsing pipe 320, thus connecting the enclosed clean liquid chamber 110 with the rinsing pipe 320. Furthermore, a through hole 1523 is provided in the second waste liquid tank 1522, allowing the enclosed waste liquid chamber 120 to communicate with the recovery tank 311 through the through hole 1523. Thus, by removing the retaining shell 152 from the bottom shell 151, clean liquid can be added to the first clean liquid tank 1511. Furthermore, the nozzle 310 is detachably mounted on the top shell 153, facilitating user replacement of the nozzle 310 for cleaning. Furthermore, both the suction port 130 and the vent port 140 are located within the bottom shell 151. The suction port 130 has a tubular structure, with the end of the tubular suction port 130 communicating with the waste liquid chamber 120 extending to one side of the retaining shell 152. This ensures communication between the waste liquid chamber 120 and the suction port 130 while preventing waste liquid from flowing into the suction port 130. Furthermore, in order to facilitate the connection between the positive pressure end B of the air pump 220 and the vent pipe 211 and the vent hole 140, in addition to using a connecting pipe, a T-shaped channel can be opened in the bottom shell 151, so that the positive pressure end B of the air pump 220 is inserted into the first end opening of the T-shaped channel, the second end opening of the T-shaped channel is connected to the vent pipe 211, and the third end opening of the T-shaped channel is directly connected to the outside. Therefore, the third end opening of the T-shaped channel is the vent hole 140.

[0042] like Figure 1 As shown, in one embodiment, a cover 154 is also attached to the housing 152, and the top housing 153 and the nozzle 310 are both located inside the cover 154. In this way, the cover 154 is detachably attached to the housing 152, so that the cover 154 can protect the nozzle 310 and other components. When in use, the cover 154 can be removed.

[0043] like Figure 2 As shown, in one embodiment, a sealing ring 155 is provided between the snap shell 152 and the bottom shell 151 and the top shell 153 respectively.

[0044] It should be noted that a sealing ring 155 is installed at the junction of the snap shell 152 and the bottom shell 151, and a sealing ring 155 is also installed at the junction of the snap shell 152 and the top shell 153, so as to ensure the sealing between the snap shell 152 and the bottom shell 151 and the top shell 153.

[0045] Furthermore, the bottom shell 151 can also be configured as a structure assembled from several parts, as long as the bottom shell 151 formed by the assembly is provided with a first clean liquid tank 1511, a first waste liquid tank 1512, a suction hole 130 and a vent hole 140.

[0046] like Figure 1 and Figure 2 As shown, in one embodiment, a circuit board 240 is also provided inside the bottom shell 151, and the circuit board 240 is electrically connected to the air pump 220. Thus, the start and stop of the air pump 220 can be controlled by the circuit board 240. In another embodiment, a button 250 is also installed on the outer wall of the outer shell 100, and the button 250 abuts against the switch on the circuit board 240. Thus, the start and stop of the air pump 220 can be controlled by the button 250.

[0047] like Figure 2 As shown, in one embodiment, a vent pipe 160 is provided inside the vent hole 140.

[0048] It should be noted that in order to ensure that the button 230 can reliably block the vent hole 140 when it is subjected to force, a vent pipe 160 is inserted into the vent hole 140. For example, the vent pipe 160 has a certain degree of flexibility so that when the button 230 abuts against the vent pipe 160, it can reliably block the vent hole 140.

[0049] like Figure 2 As shown, in one embodiment, the inner diameter of the vent pipe 211 gradually decreases towards the flushing pipe 320. Thus, as the inner diameter of the vent pipe 211 decreases, the gas flow velocity through the vent pipe 211 gradually increases. When the gas flows from the top of the vent pipe 211 into the atomizing hole 2121, the gas has a certain flow velocity. Based on the principle that higher flow velocity results in lower pressure, this ensures that the clean liquid in the clean liquid chamber 110 is drawn into the atomizing hole 2121 through the suction gap 213, and then dispersed by the gas to form fine, mist-like droplets.

[0050] In one embodiment, the minimum inner diameter of the vent pipe 211 is smaller than the inner diameter of the vent pipe 160.

[0051] It should be noted that, thus, when button 230 is not pressed, the vent 140 is open, and the gas ejected from the positive pressure end B of air pump 220 will only flow out through the larger diameter vent pipe 160, and will not enter the vent pipe 211 to atomize the clean liquid. Only when button 230 is pressed to block the vent pipe 160 will the gas ejected from the positive pressure end B of air pump 220 flow through the vent pipe 211 to atomize the clean liquid. Furthermore, it should be noted that since the vent pipe 160 is inserted into the vent hole 140, and the minimum inner diameter of the vent pipe 211 is smaller than the inner diameter of the vent pipe 160, the minimum inner diameter of the vent pipe 211 must also be smaller than the inner diameter of the vent hole 140. Therefore, even when the vent pipe 160 is not installed in the vent hole 140, it can still be ensured that atomization is controlled by button 230.

[0052] like Figure 2 As shown, in one embodiment, a block 260 is provided on the side of the button 230 near the vent 140, and the block 260 is aligned with the vent pipe 160.

[0053] It should be noted that, in order to further improve the reliability of the button 230 in sealing the vent hole 140, a plug 260 is installed on the inner side of the button 230. In one embodiment, the plug 260 is also a soft structure, such as silicone. In this way, by using the plug 260 to abut against the vent pipe 160, the vent pipe 160 can be reliably sealed, that is, the vent hole 140 can be sealed, so that the gas ejected from the positive pressure end B of the air pump 220 can pass through the vent pipe 211 and the atomizing hole 2121 to atomize the clean liquid into fine droplets.

[0054] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood to include, but is not limited to, locking and fixing with screws / bolts, and welding. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A negative pressure recovery sinus irrigation device, characterized in that, include: The housing contains independent clean liquid chambers and waste liquid chambers. A nozzle and a rinsing pipe are located on the top of the housing. One end of the rinsing pipe extends into the nozzle, forming a recovery trough between the outer wall of the rinsing pipe and the inner wall of the nozzle. The recovery trough communicates with the waste liquid chamber. The clean liquid chamber communicates with the nozzle via the rinsing pipe. The flushing assembly includes an atomizing element, an air pump, and a button. The atomizing element is disposed in the clean liquid chamber, and the air outlet of the atomizing element extends into and communicates with the flushing pipe. The housing also has a suction hole and a vent hole. The suction hole is connected to the negative pressure end of the air pump and the waste liquid chamber, respectively. The vent hole and the air inlet end of the atomizing element are both connected to the positive pressure end of the air pump. The button is slidably disposed on the outer side wall of the housing and is used to block the vent hole when force is applied.

2. The negative pressure recovery sinus irrigation device according to claim 1, characterized in that, The atomizing component includes a vent pipe and an atomizing cylinder. The vent pipe is disposed on the inner wall of the clean liquid chamber. One end of the vent pipe extends into the flushing pipe to communicate with it. The atomizing cylinder is sleeved on the outer wall of the vent pipe. An atomizing hole is opened on one end of the atomizing cylinder located in the flushing pipe. A suction gap is formed between the inner wall of the atomizing cylinder and the outer wall of the vent pipe.

3. The negative pressure recovery sinus irrigation device according to claim 1, characterized in that, The outer casing includes a bottom shell, a snap-on shell, and a top shell. The bottom shell has a first clean liquid tank and a first waste liquid tank. The snap-on shell has a second clean liquid tank and a second waste liquid tank. The snap-on shell is snapped onto the bottom shell so that the inner sidewalls of the first clean liquid tank and the second clean liquid tank together form the clean liquid chamber, and the inner sidewalls of the first waste liquid tank and the second waste liquid tank together form the waste liquid chamber. The top shell is snapped onto the side of the snap-on shell away from the bottom shell. The nozzle is disposed on the top shell. The rinsing pipe is disposed on the snap-on shell and passes through the top shell. The suction hole and the vent hole are both located inside the bottom shell.

4. The negative pressure recovery sinus irrigation device according to claim 3, characterized in that, The casing is also fitted with a cover, and the top casing and the nozzle are both located inside the cover.

5. The negative pressure recovery sinus irrigation device according to claim 3, characterized in that, A sealing ring is provided between the buckle shell and the bottom shell and the top shell respectively.

6. The negative pressure recovery sinus irrigation device according to claim 3, characterized in that, A circuit board is also provided inside the bottom shell, and the circuit board is electrically connected to the air pump.

7. The negative pressure recovery sinus irrigation device according to claim 2, characterized in that, A vent pipe is installed inside the vent hole.

8. The negative pressure recovery sinus irrigation device according to claim 7, characterized in that, The inner diameter of the vent pipe gradually decreases towards the flushing pipe.

9. The negative pressure recovery sinus irrigation device according to claim 7 or 8, characterized in that, The minimum inner diameter of the vent pipe is smaller than the inner diameter of the vent pipe.

10. The negative pressure recovery sinus irrigation device according to claim 7, characterized in that, A plug is also provided on the side of the button near the vent hole, and the plug is aligned with the vent pipe.

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