Nasal aspirator

Abstract

The utility model belongs to the technical field of inhalers, and discloses a nasal aspirator. The nasal aspirator comprises a suction part, a dirt storage part and a negative pressure generation part, wherein the first end of the suction part is used for extending into the nasal cavity, the dirt storage part is in sealed communication with the second end of the suction part, a cavity is formed in the dirt storage part and used for storing snot sucked by the suction part, the dirt storage part comprises a suction straight pipeline, the suction straight pipeline is arranged at the bottom of the cavity in a protruding mode and communicated with the suction part, and the negative pressure generation part comprises a negative pressure pipeline. High-speed airflow is introduced into the negative-pressure pipeline, the negative-pressure pipeline is communicated with the external environment, the negative-pressure pipeline comprises a contraction section, the inner diameter of the contraction section is gradually reduced in the flowing direction of the high-speed airflow in the negative-pressure pipeline, and the end, with the smallest inner diameter, of the contraction section is communicated with the suction straight pipeline. According to the nasal aspirator provided by the utility model, the circulation of high-speed airflow is smoother, the negative pressure for sucking nasal discharge is ensured, and the sucking efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to inhaler technical field especially, relates to a kind of nose suction device. BACKGROUND

[0002] Nose suction device is a device for suctioning nasal secretions, usually used when infantile nasal congestion cannot discharge nasal secretions. The nose suction device on the market currently utilizes Venturi effect to suck when working, forming negative pressure inside the nose suction device to suck away secretions. The existing nose suction device usually has an air source at one end of the nose suction device, and utilizes the air source to form Venturi effect in the circulation inside the nose suction device, and then sucks secretions. However, when the nose suction device sucks secretions, the airflow passage inside the nose suction device has multiple bends, and the suction passage is higher than the suction passage of the nose suction device, and the inner diameter of the air passage changes in steps, making the airflow passage complex and zigzag, so that the negative pressure generated in the nose suction device is not enough to suck nasal discharge, and the suction experience is poor and the efficiency is low. SUMMARY

[0003] The utility model aims at providing a kind of nose suction device, which can ensure the negative pressure of sucking nasal discharge and improve the suction efficiency.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The nose suction device comprises:

[0006] The suction member has a first end for extending into the nasal cavity.

[0007] The storage member is in sealed communication with the second end of the suction member, and the storage member has a cavity formed therein for storing the nasal discharge sucked by the suction member. The storage member comprises a suction straight pipe, which is protruded from the bottom of the cavity and in communication with the suction member.

[0008] The negative pressure generating member comprises a negative pressure pipeline, and a high-speed airflow is introduced into the negative pressure pipeline. The negative pressure pipeline is in communication with the external environment, and comprises a converging section. The inner diameter of the converging section gradually decreases along the flow direction of the high-speed airflow in the negative pressure pipeline, and the end of the converging section with the smallest inner diameter is in communication with the suction straight pipe.

[0009] Preferably, the suction straight pipe comprises a variable-diameter pipe section, and the inner diameter of the variable-diameter pipe section gradually decreases along the extension direction of the variable-diameter pipe section. The end of the variable-diameter pipe section with the smallest inner diameter is in communication with the end of the converging section with the smallest inner diameter.

[0010] Preferably, a second end of the suction member is provided with a baffle plate, the baffle plate is provided with a first through hole, the first through hole is in communication with the cavity, a first end of the suction straight pipe is located at the bottom of the cavity, the suction straight pipe extends from the bottom of the cavity towards the suction member, a second end of the suction straight pipe is spaced apart from the baffle plate, and the first through hole is located at the outer circumferential side of the second end of the suction straight pipe.

[0011] Preferably, a plurality of first through holes are spaced apart on the baffle plate, and the plurality of first through holes are uniformly arranged along the circumference of the suction straight pipe.

[0012] Preferably, an outer diameter of the suction straight pipe gradually increases from the second end of the suction straight pipe to the first end of the suction straight pipe, and a normal projection of an outer wall surface of the suction straight pipe on the baffle plate at least partially coincides with the first through hole.

[0013] Preferably, an internal portion of the suction member is provided with a drainage straight pipe, one end of the drainage straight pipe is in communication with the first end of the suction member, and the other end of the drainage straight pipe extends towards the pollution storage member.

[0014] Preferably, the negative pressure pipeline further comprises:

[0015] a diffusion section, an inner diameter of the diffusion section gradually increases along a flow direction of the high-speed airflow in the negative pressure pipeline, one end of the diffusion section with the minimum inner diameter is in communication with one end of the contraction section with the minimum inner diameter, and the diffusion section is in communication with the external environment.

[0016] Preferably, the nose suction device further comprises:

[0017] a support member, the support member is connected with the pollution storage member, and the negative pressure generating member is arranged in an internal portion of the support member.

[0018] Preferably, the support member is provided with a positioning plate, the negative pressure generating member is provided with an abutting portion, the positioning plate and the abutting portion are in abutment, one of the positioning plate and the abutting portion is provided with a protrusion, and the other is provided with a groove, and the protrusion and the groove are inserted and matched.

[0019] Preferably, the negative pressure pipeline is located in the internal portion of the support member, the negative pressure generating member further comprises an air passage pipeline, the air passage pipeline is in communication with the negative pressure pipeline, and a high-speed airflow is introduced into the air passage pipeline.

[0020] Advantages of the utility model:

[0021] The utility model provides a kind of nose aspirator, the nose aspirator includes suction piece, stores pollution piece and negative pressure generating piece;Wherein, the first end of suction piece is used to extend into nasal cavity, and the second end of suction piece is sealed with the communication of store pollution piece, and cavity is formed in store pollution piece, and cavity is used to store the snot that suction piece sucks, and store pollution piece includes suction straight pipeline, and suction straight pipeline is protruding in the bottom of cavity, and suction straight pipeline is communicated with suction piece, and negative pressure generating piece includes negative pressure pipeline, and high-speed airflow is introduced in negative pressure pipeline, and negative pressure pipeline is communicated with external environment, and negative pressure pipeline includes contraction section, and along the flow direction of high-speed airflow in negative pressure pipeline, the inside diameter of contraction section gradually decreases, and the end of contraction section with minimum inside diameter is communicated with suction straight pipeline.

[0022] Suction straight pipeline is protruding in store pollution piece and communicated with suction piece, so that suction straight pipeline can produce negative pressure suction force to suction piece more smoothly, in addition, negative pressure pipeline includes contraction section, so that high-speed airflow is accelerated when passing through contraction section, according to venturi effect, a negative pressure area is generated in contraction section, and the end of contraction section with minimum inside diameter is communicated with suction straight pipeline, so that negative pressure suction force is generated in suction straight pipeline, so that the snot in nasal cavity can be sucked out by nose aspirator, by setting suction straight pipeline and contraction section communicated with suction straight pipeline, high-speed airflow has no airflow loss in negative pressure pipeline, so that the flow of high-speed airflow is more smooth, and the negative pressure of suction snot in suction straight pipeline 21 is ensured, and the suction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structure exploded view of the nose aspirator provided by the utility model embodiment;

[0024] Figure 2 It is the first sectional view of the nose aspirator provided by the utility model embodiment;

[0025] Figure 3 It is the second sectional view of the nose aspirator provided by the utility model embodiment;

[0026] Figure 4 It is Figure 2 The local enlarged view of A in Fig.

[0027] In the figure:

[0028] 1, suction piece;11, suction part;111, drainage straight pipe;12, connecting part;121, baffle;1211, first through hole;122, second through hole;

[0029] 2, store pollution piece;21, suction straight pipeline;211, reducing pipe section;212, extension pipe section;22, cavity;

[0030] 3, negative pressure generating piece; 31, negative pressure pipeline; 311, contraction section; 3111, first port; 3112, second port; 312, stabilization section; 313, diffusion section; 3131, third through hole; 33, air vent pipeline; 34, abutment; 341, groove;

[0031] 4, sealing piece;

[0032] 5, support piece; 51, positioning plate; 511, protrusion; 512, avoidance hole. DETAILED DESCRIPTION

[0033] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0034] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0037] As Figure 1 andFigure 2 As shown, the embodiment provides a nose aspirator, which comprises a suction member 1, a dirt storage member 2 and a negative pressure generating member 3; wherein the first end of the suction member 1 is used to extend into the nasal cavity, the dirt storage member 2 is in sealed communication with the second end of the suction member 1, a cavity 22 is formed in the dirt storage member 2, the cavity 22 is used to store the nasal mucus sucked by the suction member 1, the dirt storage member 2 comprises a suction straight pipe 21, the suction straight pipe 21 is protruded at the bottom of the cavity 22, the suction straight pipe 21 is in communication with the suction member 1, the negative pressure generating member 3 comprises a negative pressure pipeline 31, a high-speed airflow is introduced into the negative pressure pipeline 31, and the negative pressure pipeline 31 is in communication with the external environment, the negative pressure pipeline 31 comprises a contraction section 311, along the flow direction of the high-speed airflow in the negative pressure pipeline 31, the inner diameter of the contraction section 311 gradually decreases, and the end of the contraction section 311 with the smallest inner diameter is in communication with the suction straight pipe 21.

[0038] The suction straight pipe 21 is protruded in the dirt storage member 2 and is in communication with the suction member 1, so that the suction straight pipe 21 can more smoothly generate a negative pressure suction force on the suction member 1, in addition, the negative pressure pipeline 31 comprises the contraction section 311, so that the high-speed airflow is accelerated when passing through the contraction section 311, according to the Venturi effect, a negative pressure area is generated in the contraction section 311, and the end of the contraction section 311 with the smallest inner diameter is in communication with the suction straight pipe 21, so that a negative pressure suction force is generated in the suction straight pipe 21, so that the nose aspirator can suck out the nasal mucus in the nasal cavity, by arranging the suction straight pipe 21 and the contraction section 311 in communication with the suction straight pipe 21, the high-speed airflow has no airflow loss in the negative pressure pipeline 31, so that the flow of the high-speed airflow is more smooth, and the negative pressure force for sucking the nasal mucus in the suction straight pipe 21 is ensured, and the suction efficiency is improved. It should be noted that in the embodiment, the suction member 1 is connected with the dirt storage member 2 in interference fit.

[0039] Further, as shown in Figure 2 and Figure 3 , the suction straight pipe 21 comprises a variable-diameter pipe section 211, the inner diameter of the variable-diameter pipe section 211 gradually decreases along the extension direction of the variable-diameter pipe section 211, and the end of the variable-diameter pipe section 211 with the smallest inner diameter is in communication with the end of the contraction section 311 with the smallest inner diameter. The above arrangement makes the negative pressure suction force transition smoothly when the negative pressure suction force flows through the variable-diameter pipe section 211, avoids sudden change of the inner diameter of the pipeline which causes excessive instantaneous negative pressure suction force, and further causes harm to the nasal cavity, which helps to improve the efficiency and stability of suction.

[0040] Optionally, as shown in Figure 2 and Figure 3As shown, in the embodiment, the suction straight pipe 21 further comprises an extension pipe section 212, the inner diameter of the extension pipe section 212 is constant, the extension pipe section 212 is in communication with the end of the variable diameter pipe section 211 with the largest inner diameter, and the extension pipe section 212 is in communication with the suction member 1. When the high-speed airflow enters the extension pipe section 212, the extension pipe section 212 can provide a stable flow channel for the high-speed airflow, so that the flow rate and pressure of the high-speed airflow are maintained to a certain extent, and the negative pressure suction of the nasal aspirator is stabilized.

[0041] Further, as shown in Figure 2 and Figure 3 , the second end of the suction member 1 is provided with a baffle plate 121, the baffle plate 121 is provided with a first through hole 1211, the first through hole 1211 is in communication with the cavity 22, the first end of the suction straight pipe 21 is located at the bottom of the cavity 22, the suction straight pipe 21 extends from the bottom of the cavity 22 towards the suction member 1, the second end of the suction straight pipe 21 is spaced apart from the baffle plate 121, and the first through hole 1211 is located at the outer circumferential side of the second end of the suction straight pipe 21. By providing the baffle plate 121, the nasal discharge sucked out by the suction member 1 falls into the cavity 22 through the first through hole 1211; in addition, the second end of the suction straight pipe 21 is spaced apart from the baffle plate 121, and the first through hole 1211 is located at the outer circumferential side of the second end of the suction straight pipe 21, which avoids the risk that the nasal discharge directly enters the suction straight pipe 21 after passing through the first through hole 1211 and blocks the suction straight pipe 21, thereby reducing the probability of damage to the nasal aspirator. Specifically, in the embodiment, the second end of the suction straight pipe 21 is lower than the baffle plate 121 along the extension direction of the suction straight pipe 21.

[0042] Further, as shown in Figure 2 and Figure 3 , the baffle plate 121 is provided with a plurality of first through holes 1211, and the plurality of first through holes 1211 are uniformly arranged along the circumference of the suction straight pipe 21. The above arrangement enables the nasal discharge to flow into the cavity 22 through each first through hole 1211 during the suction process, thereby playing a shunt role and ensuring the stability and efficiency of the suction process. It should be noted that in the embodiment, the first through hole 1211 is provided with three, and in other embodiments, the number of first through holes 1211 is not limited, as long as the baffle plate 121 can block the second end of the suction member 1 and enable the nasal discharge to flow into the cavity 22 through the first through hole 1211.

[0043] Further, as shown in Figure 2 and Figure 3As shown, in the present embodiment, the outer diameter of the suction straight pipe 21 gradually increases from the second end of the suction straight pipe 21 to the first end of the suction straight pipe 21, and the orthographic projection of the outer wall surface of the suction straight pipe 21 on the baffle 121 at least partially coincides with the first through hole 1211. The above arrangement forms a short buffer area between the baffle 121 and the bottom end of the cavity 22, so that the nasal discharge flowing from the first through hole 1211 can flow to the bottom of the cavity 22 through the outer wall of the suction straight pipe 21, making the suction process more stable.

[0044] Optionally, in the present embodiment, the distance between the second end of the suction straight pipe 21 and the baffle 121 cannot be too large or too small. If the distance between the second end of the suction straight pipe 21 and the baffle 121 is too large, the negative pressure suction force cannot be concentrated, which will reduce the suction efficiency; if the distance between the second end of the suction straight pipe 21 and the baffle 121 is too small, the high-speed airflow will be hindered by the baffle 121 when entering the suction straight pipe 21, which will cause the speed of the high-speed airflow to increase sharply, the negative pressure suction force to be unevenly distributed, and the suction efficiency to be reduced.

[0045] Further, as shown in Figure 2 and Figure 3 , the inside of the suction piece 1 is provided with a drainage straight pipe 111, one end of the drainage straight pipe 111 communicates with the first end of the suction piece 1, and the other end of the drainage straight pipe 111 extends towards the sewage storage piece 2. By arranging the drainage straight pipe 111, and the first end of the drainage straight pipe 111 communicating with the first end of the suction piece 1, the nasal discharge can smoothly enter the drainage straight pipe 111 from the first end of the suction piece 1, and the other end of the drainage straight pipe 111 extends towards the sewage storage piece 2, so that in the drainage process, the nasal discharge can be guided to the sewage storage piece 2 in the most efficient way, and the whole process of suction and drainage can be stable, continuous and reliable.

[0046] Optionally, as shown in Figure 2 and Figure 3As shown, in this embodiment, the suction device 1 includes a suction part 11 and a connecting part 12. The first end of the suction part 11 extends into the nasal cavity, and the second end of the suction part 11 is detachably connected to the first end of the connecting part 12. A drainage tube 111 is provided inside the suction part 11, and a cavity is provided inside the connecting part 12. A baffle 121 is provided to seal the second end of the connecting part 12, and the second end of the connecting part 12 is detachably connected to the waste collection device 2. This configuration facilitates disassembly and cleaning of the suction device 1, ensuring its cleanliness and hygiene. Furthermore, the cavity within the connecting part 12 facilitates the temporary storage of nasal mucus left by the drainage tube 111, ensuring that the nasal mucus can reliably enter the cavity 22 through the first through hole 1211 on the baffle 121. When cleaning the nasal aspirator is required, the connecting part 12 is detached from the waste collection part 2, and the suction part 11 is detached from the connecting part 12. The cavity 22, suction part 11, and connecting part 12 are thoroughly cleaned to ensure no nasal discharge residue remains inside, thus maintaining the cleanliness of the nasal aspirator. It should be noted that in this embodiment, the first end of the drainage straight tube 111 is connected to the first end of the suction part 11, and the drainage straight tube 111 extends to the second end of the suction part 11. It should also be noted that in this embodiment, the suction part 11 and the connecting part 12 are connected with an interference fit.

[0047] Optionally, in this embodiment, the suction part 11 is made of silicone. Silicone is soft and does not irritate the nasal mucosa. In other embodiments, the suction part 11 may also be made of rubber.

[0048] Optionally, such as Figure 2 As shown, in this embodiment, a second through hole 122 is provided on the side wall of the connecting part 12, and the second through hole 122 communicates with the external environment. This arrangement allows the second through hole 122 to be manually blocked to increase the negative pressure suction when the nasal aspirator's negative pressure suction is insufficient, thereby improving the aspirator's suction efficiency.

[0049] Furthermore, such as Figure 2As shown, the negative pressure pipeline 31 also includes a diffuser section 313. Along the flow direction of the high-speed airflow within the negative pressure pipeline 31, the inner diameter of the diffuser section 313 gradually increases. The end with the smallest inner diameter of the diffuser section 313 is connected to the end with the smallest inner diameter of the contraction section 311. The diffuser section 313 is connected to the external environment. The gradual increase in the inner diameter of the diffuser section 313 along the flow direction of the high-speed airflow within the negative pressure pipeline 31, with its smallest inner diameter connected to the end with the smallest inner diameter of the contraction section 311, effectively reduces the velocity of the high-speed airflow in the negative pressure pipeline 31 when it flows through the diffuser section 313. This achieves a smooth transition from a high-speed, low-pressure state to a low-speed, normal-pressure state. Furthermore, the connection between the diffuser section 313 and the external environment allows the high-speed airflow passing through the diffuser section 313 to be naturally and smoothly discharged into the surrounding environment, ensuring the formation of a stable negative pressure within the negative pressure pipeline 31.

[0050] Optionally, such as Figure 2 As shown, in this embodiment, the diffuser section 313 has a third through hole 3131, through which the diffuser section 313 communicates with the external environment. This arrangement helps to quickly discharge the high-speed airflow inside the diffuser section 313, thereby preventing the accumulation of high-speed airflow in the diffuser section 313 from obstructing the flow of high-speed airflow within the negative pressure pipe 31, which in turn reduces the negative pressure suction formed by the contraction section 311.

[0051] Optionally, such as Figure 2 As shown, in this embodiment, the negative pressure pipeline 31 further includes a stabilizing section 312. The inner diameter of the stabilizing section 312 remains unchanged. The stabilizing section 312 is connected to the smallest inner diameter end of the contraction section 311, the smallest inner diameter end of the diffuser section 313, and the smallest inner diameter end of the variable diameter pipe section 211. The connection between the stabilizing section 312 and the smallest inner diameter end of the contraction section 311 ensures that the high-speed airflow in the contraction section 311 can smoothly transition to the stabilizing section 312, avoiding pressure fluctuations caused by sudden changes in inner diameter. At the same time, the stabilizing section 312 is also connected to the smallest inner diameter end of the diffuser section 313, allowing the fluid state adjusted in the stabilizing section 312 to enter the diffuser section 313 in a relatively stable manner, providing a good foundation for subsequent pressure release and high-speed airflow diffusion. In addition, the stabilizing section 312 is connected to the end with the smallest inner diameter of the reducing pipe section 211, so that the negative pressure suction generated in the negative pressure pipe 31 is stabilized before entering the reducing pipe section 211, thus avoiding unstable negative pressure suction and ensuring the stability and efficiency of the nasal aspirator.

[0052] Furthermore, such as Figure 2 The nasal aspirator also includes a support member 5, which is connected to the waste collection member 2. A negative pressure generating member 3 is disposed inside the support member 5. This arrangement protects the negative pressure generating member 3 while making the nasal aspirator's structure more compact.

[0053] Optionally, such asFigure 2 As shown in the drawings, in the present embodiment, the pollution storage member 2 and the support member 5 are ultrasonically welded. Ultrasonic welding has fast welding speed, high welding strength, and is clean and pollution-free. In other embodiments, the pollution storage member 2 and the support member 5 can also be connected by insertion or threaded connection, etc., which is not limited here, as long as the fixed connection of the pollution storage member 2 and the support member 5 can be achieved.

[0054] Further, as shown in the drawings, Figures 2-4 The support member 5 is provided with a positioning plate 51, the negative pressure generating member 3 is provided with an abutting portion 34, the positioning plate 51 and the abutting portion 34 abut, one of the positioning plate 51 and the abutting portion 34 is provided with a protrusion 511, and the other is provided with a groove 341, and the protrusion 511 and the groove 341 are inserted and matched. By using the insertion structure of the protrusion 511 and the groove 341 between the positioning plate 51 and the abutting portion 34, it is ensured that the positioning plate 51 and the abutting portion 34 can be closely attached and not easily loosened during insertion, thereby enhancing the connection reliability between the positioning plate 51 and the abutting portion 34, and improving the assembly precision and stability of the entire device. Alternatively, as shown in the drawings, Figure 4 In the present embodiment, the positioning plate 51 is provided with the protrusion 511, and the abutting portion 34 is provided with the groove 341. In other embodiments, the positioning plate 51 can be provided with the groove 341, and the abutting portion 34 can be provided with the protrusion 511, which is not limited here.

[0055] Further, as shown in the drawings, Figures 2-4 The negative pressure pipeline 31 is located inside the support member 5, and the negative pressure generating member 3 further comprises an air passage pipeline 33, the air passage pipeline 33 is in communication with the negative pressure pipeline 31, and a high-speed airflow is introduced into the air passage pipeline 33. By providing the air passage pipeline 33, a stable high-speed airflow is provided for the negative pressure pipeline 31, so that a stable negative pressure suction force can be generated in the contraction section 311, thereby realizing the stability and reliability of the nose aspirator. It should be noted that in the present embodiment, the air passage pipeline 33 is connected with an atomizer (not shown in the drawings), and the atomizer provides a stable high-speed airflow for the air passage pipeline 33.

[0056] Alternatively, as shown in the drawings, Figure 2 and Figure 4As shown in the embodiment, the negative pressure pipeline 31 is arranged through the negative pressure generator 3 along the radial direction of the negative pressure generator 3, the contraction section 311 forms a first port 3111 through the pipe wall of the negative pressure generator 3, and the suction nose further comprises a sealing member 4 located inside the support member 5 and sealingly connected to the first port 3111. The negative pressure pipeline 31 is arranged through the negative pressure generator 3 along the radial direction of the negative pressure generator 3, which is more convenient for processing the negative pressure pipeline 31. In addition, by sealingly connecting the sealing member 4 to the first port 3111, the leakage of the high-speed airflow from the first port 3111 of the contraction section 311 is effectively prevented, the stable negative pressure suction force in the contraction section 311 is ensured, the failure and instability factors caused by the leakage of the high-speed airflow are reduced, and the suction nose can be more stably and reliably operated during use.

[0057] Optionally, as shown in Figure 2 and Figure 4 In the embodiment, the sealing member 4 is a rubber plug. The rubber plug has a certain elasticity and can be tightly sealed in the first port 3111. In other embodiments, the sealing member 4 can also be a silica gel plug, which is not limited herein as long as the sealing of the first port 3111 can be achieved.

[0058] Optionally, as shown in Figure 2 and Figure 4 The second port 3112 is arranged in the contraction section 311 along the radial direction of the contraction section 311, the second port 3112 is spaced apart from the first port 3111, and the air pipeline 33 is in communication with the second port 3112. The above arrangement enables the gas to be transmitted to the second port 3112 through the air pipeline 33 and enter the inside of the contraction section 311, thereby providing a passage for the high-speed airflow to enter the contraction section 311.

[0059] Optionally, as shown in Figure 2 In the embodiment, the positioning plate 51 is provided with a relief hole 512, the third through hole 3131 is in communication with the relief hole 512, the air pipeline 33 passes through the relief hole 512 to communicate with the second port 3112, and the inner diameter of the relief hole 512 is greater than the outer diameter of the air pipeline 33. The above arrangement makes the structure of the suction nose compact and enables the high-speed airflow to be quickly discharged from the diffusion section 313.

[0060] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model claim.

Claims

1. A nose pipette, characterized in that The utility model relates to a nasal aspirator, comprising: a suction member (1) having a first end configured to extend into a nasal cavity; a storage member (2) in sealed communication with a second end of the suction member (1), the storage member (2) having a cavity (22) formed therein for storing nasal mucus aspirated by the suction member (1), the storage member (2) comprising a suction straight pipe (21) protruding from a bottom of the cavity (22) and in communication with the suction member (1); a negative pressure generating member (3) comprising a negative pressure pipe (31) having a high-speed airflow flowing therethrough and in communication with an external environment, the negative pressure pipe (31) comprising a converging section (311) having a gradually decreasing inner diameter along a flow direction of the high-speed airflow, the converging section (311) having a smallest end in communication with the suction straight pipe (21).

2. The nose aspirator of claim 1, wherein, The suction straight pipe (21) comprises a variable-diameter pipe section (211) having a gradually decreasing inner diameter along an extension direction of the variable-diameter pipe section (211), the variable-diameter pipe section (211) having a smallest end in communication with the smallest end of the converging section (311).

3. The nose aspirator of claim 1, wherein, The second end of the suction member (1) is provided with a baffle (121) having a first through hole (1211) in communication with the cavity (22), the first end of the suction straight pipe (21) being located at the bottom of the cavity (22), the suction straight pipe (21) extending from the bottom of the cavity (22) towards the suction member (1), the second end of the suction straight pipe (21) being spaced apart from the baffle (121), the first through hole (1211) being located at an outer circumferential side of the second end of the suction straight pipe (21).

4. The nose aspirator of claim 3, wherein, The baffle (121) is provided with a plurality of first through holes (1211) spaced apart therefrom, the plurality of first through holes (1211) being uniformly arranged along a circumferential direction of the suction straight pipe (21).

5. The nose aspirator of claim 3, wherein, An outer diameter of the suction straight pipe (21) gradually increases from the second end of the suction straight pipe (21) to the first end of the suction straight pipe (21), and a normal projection of an outer wall surface of the suction straight pipe (21) on the baffle (121) at least partially overlaps with the first through hole (1211).

6. A nasal aspirator according to any one of claims 1-5, characterized in that The suction member (1) is provided with a drainage straight pipe (111) having one end in communication with the first end of the suction member (1) and the other end extending towards the storage member (2).

7. A nasal aspirator according to any one of claims 1-5, characterized in that The negative pressure pipe (31) further comprises: A diffusion section (313) gradually increases in inner diameter along the flow direction of the high-speed airflow in the negative pressure pipeline (31), the end with the smallest inner diameter of the diffusion section (313) is communicated with the end with the smallest inner diameter of the contraction section (311), and the diffusion section (313) is communicated with the external environment.

8. A nasal aspirator according to any one of claims 1-5, characterized in that The nose sucker further comprises: A support (5) connected with the dirt storage member (2), and the negative pressure generator (3) is arranged inside the support (5).

9. The nose pipette of claim 8, wherein, The support (5) is provided with a positioning plate (51), the negative pressure generator (3) is provided with an abutting portion (34), the positioning plate (51) and the abutting portion (34) are in abutment, one of the positioning plate (51) and the abutting portion (34) is provided with a protrusion (511), and the other is provided with a groove (341), and the protrusion (511) and the groove (341) are in plug-in fit.

10. The nose aspirator of claim 8, wherein, The negative pressure pipeline (31) is located inside the support (5), the negative pressure generator (3) further comprises a ventilation pipeline (33), the ventilation pipeline (33) is communicated with the negative pressure pipeline (31), and high-speed airflow is introduced into the ventilation pipeline (33).

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