Dustproof nasal spray device

Abstract

The utility model discloses a dustproof nasal spray device which comprises a shell, a mouthpiece, a pipe opening, a valve unit and a dustproof piece. The mouthpiece and the pipe orifice are arranged on the shell and are connected through a flow channel in the shell; the valve unit is arranged at the position, close to the mouthpiece, in the runner; the dustproof sheet is arranged in the mouthpiece; in the initial state, the valve unit cuts off the flow channel, and meanwhile, the dustproof piece closes and blocks the blowing opening, so that the atmosphere is prevented from entering the shell; when the mouthpiece outputs a first fluid, the dustproof sheet is passively opened under the pressure of the first fluid, and then the valve unit conducts the flow channel and enables the first fluid to flow to the pipe orifice. When the dustproof nasal spray device is not used, the blowing opening is blocked through the dustproof piece, the flow channel is cut off through the valve unit, the dual dustproof function is achieved, the atmosphere is prevented from entering the shell, and the treatment problem caused by pollution of the flow channel is avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a dust-proof nasal sprayer. Background Art

[0002] Nasal drug delivery devices are widely used in nasal treatment because they can deliver drugs directly to the nose. Cleaning the nasal cavity can effectively relieve various rhinitis symptoms such as nasal congestion and runny nose, and can reduce the invasion of bacteria and allergens into the nasal cavity, thereby improving one's own respiratory immunity.

[0003] The Chinese patent with the publication number CN 112999499 A discloses a fluid dispensing device, which is provided with a device to enhance the power of drug ejection by means of oral blowing gas output by the user, so that the drug reaches a predetermined administration position.

[0004] However, in actual use, it is found that since the fluid inlet of the device is generally an open structure, when not in use, the atmosphere enters the device through the fluid inlet, and the bacteria, dust and other impurities it carries easily cause contamination in the flow channel. When in use, the contamination enters the human nasal cavity through the fluid outlet, which may aggravate the condition and cause damage to human health. Utility Model Content

[0005] The utility model aims to provide a dust-proof nasal sprayer, which can prevent dust from entering the interior of the device and avoid treatment problems caused by flow channel contamination.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] A dust-proof nasal spray, comprising:

[0008] shell;

[0009] A mouthpiece and a pipe mouth; the mouthpiece and the pipe mouth are arranged on the shell, and the two are connected through a flow channel in the shell;

[0010] a valve unit, the valve unit being arranged in the flow channel at a position close to the mouthpiece;

[0011] A dustproof sheet, the dustproof sheet being arranged in the blowing port;

[0012] In the initial state, the valve unit cuts off the flow channel and the dust-proof sheet closes and blocks the blowing port, thereby limiting the air from entering the interior of the housing;

[0013] When the mouthpiece outputs the first fluid, the dustproof sheet is passively opened by the pressure of the first fluid, and then the valve unit opens the flow channel and allows the first fluid to flow toward the nozzle.

[0014] In some embodiments, the flow channel includes an air storage chamber, and the air storage chamber is provided with an inlet and an outlet;

[0015] The valve unit is rotatably disposed between the inlet and the outlet, and can selectively control an open or closed state of the outlet according to a pressure of the first fluid.

[0016] In some embodiments, the valve unit has two deflection strokes:

[0017] In the first deflection stroke, the outlet is closed, and the first fluid enters the air storage chamber from the inlet and continues to accumulate;

[0018] In the second deflection stroke, the outlet is opened, and the first fluid flows from the air storage chamber to the pipe opening.

[0019] In some embodiments, a first arc surface is disposed on one side of the inlet, and a second arc surface and a third arc surface are disposed on both sides of the outlet respectively;

[0020] The valve unit includes a first rotating part, a second rotating part and a third rotating part; wherein, the first rotating part is always in sealing cooperation with the first arc surface, and the third rotating part is always in sealing cooperation with the third arc surface; in the first deflection stroke, the second rotating part and the second arc surface are rotated from the sealing critical point to the sealing critical point, and in the second deflection stroke, the second rotating part and the second arc surface are rotated from the sealing critical point to form a gap.

[0021] In some embodiments, a material supply unit is further included, the material supply unit being disposed inside the housing and partially extending into the nozzle;

[0022] The material supply unit is used to store a second fluid and can deliver the second fluid out of the nozzle under the driving force of an external force.

[0023] In some embodiments, it further includes a loading mechanism, wherein the loading mechanism is connected to the substance supply unit;

[0024] In an initial state, the valve unit is engaged with the loading mechanism so that the material supply unit is locked in a first position.

[0025] In some embodiments, the loading mechanism is manually operated in advance to apply a loading force to the material supply unit, so as to drive the material supply unit to move from the first position to the second position after the valve unit is unlocked.

[0026] In some embodiments, an actuating unit is further included, wherein the actuating unit is rotatably disposed on one side of the housing and connected to the loading mechanism.

[0027] In some embodiments, an antibacterial layer is provided on the inner wall of the mouthpiece and / or the tube mouth.

[0028] In some embodiments, a dust-proof sheet is provided in the mouthpiece;

[0029] In an initial state, the dust-proof sheet is closed and blocks the mouthpiece. When the user outputs the first fluid through the mouthpiece, the dust-proof sheet is passively opened by the pressure of the first fluid.

[0030] Compared with the prior art, the beneficial effects of the utility model include at least: when the device is not in use, the dustproof sheet blocks the blowing port and the valve unit cuts off the flow channel, thereby achieving a dual dustproof function to limit the entry of atmosphere into the interior of the housing and avoid treatment problems caused by flow channel contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of a dual-power-driven dust-proof nasal spray.

[0032] Figure 2 It is a schematic diagram of the exploded structure of a dual-power-driven dust-proof nasal spray.

[0033] Figure 3 It is a schematic diagram of the structure of a dual-power-driven dust-proof nasal sprayer in a first position with the valve unit locked.

[0034] Figure 4 It is a structural schematic diagram of a dual-power-driven dust-proof nasal spray when the valve unit is in the first position and the valve unit is at the sealing critical point.

[0035] Figure 5 It is a schematic diagram of the structure of the dual-power-driven dust-proof nasal sprayer when it is in the second position and the valve unit is unlocked.

[0036] Figure 6 It is a structural schematic diagram of a single-power-driven dust-proof nasal spray when it is in the first position and the valve unit is locked.

[0037] Figure 7 It is a structural schematic diagram of a single-power-driven dust-proof nasal sprayer in a second position with the valve unit unlocked.

[0038] Figure 8 It is a schematic diagram of the connection structure between the actuating unit and the loading structure.

[0039] Fig. 9 It is a schematic diagram of the coordination between the valve unit, the loading mechanism and the air storage chamber.

[0040] Fig.10 It is a schematic diagram of the structure of the dustproof piece in the blowing mouth.

[0041] In the figure:

[0042] 1. Shell; 11. First half shell; 12. Second half shell; 13. Mounting cavity; 14. Sealing groove; 15. Guide groove;

[0043] 2. pipe opening; 21. ring channel;

[0044] 3. Material supply unit; 31. Nozzle; 32. Pump assembly; 33. Fluid container;

[0045] 4. loading mechanism; 41. first cylinder; 411. locking tongue; 4111. first locking surface; 4112. first guide surface; 412. stopper; 42. second cylinder; 421. limiting groove; 422. slider; 423. driven block; 43. elastic member;

[0046] 5. Actuating unit; 51. Pressing portion; 52. Connecting portion; 521. Guide groove; 5211. Driving section; 5212. Anti-slip section;

[0047] 6. valve unit; 61. first rotating part; 62. second rotating part; 63. third rotating part; 64. latching protrusion; 641. second locking surface; 642. second guide surface;

[0048] 7. Mouthpiece;

[0049] 8. air storage chamber; 81. inlet; 82. outlet; 83. first arc surface; 84. second arc surface; 85. third arc surface; 86. air hole;

[0050] 9. Seals;

[0051] 10. Dust-proof sheet. DETAILED DESCRIPTION

[0052] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0053] The words expressing positions and directions described in the present utility model are all explained by taking the drawings as examples, but they can be changed as needed, and all the changes are included in the protection scope of the present utility model.

[0054] See also Figures 1 to 9 As shown, the utility model discloses a dust-proof nasal spray, which is mainly used in the treatment of nasal diseases. By delivering drugs deep into the respiratory tract, the absorption efficiency of the drugs is improved, and the degradation of the drugs in the digestive system is reduced, so as to exert the therapeutic effect more quickly.

[0055] The dust-proof nasal spray of the present application can be a single-power nasal spray, that is, it is operated by only one power source, such as a manual switch, to spray the medicine. Figure 6 and Figure 7 As shown, the dust-proof nasal spray mainly includes a housing 1 , a nozzle 2 , a material supply unit 3 , a loading mechanism 4 and an actuating unit 5 .

[0056] The housing 1 is constructed as a single-handed grip, which contains a material supply unit 3, a loading mechanism 4 and a part of an actuating unit 5. In this embodiment, the housing 1 is generally an elongated box body, and a mounting cavity 13 is provided inside the housing 1, and both the material supply unit 3 and the loading mechanism 4 can be disposed in the mounting cavity 13 for protection.

[0057] The nozzle 2 is arranged on the housing 1, so that the nozzle 2 is sealed and connected to the housing 1. When in use, the nozzle 2 is arranged on the user's nose, and the second fluid can be delivered to the user's nasal airway in cooperation with the action of the substance supply unit 3.

[0058] The substance supply unit 3 is used to store a second fluid. The second fluid may be a powdery substance, a granular substance or a liquid substance. The second fluid has a specific therapeutic effect.

[0059] The material supply unit 3 can deliver the second fluid outward under the drive of an external force (such as a loading force), for example, in the form of a spray or a jet. In this embodiment, the material supply unit 3 can move between a first position and a second position, wherein the first position is defined as an invalid working position, such as Figure 6 As shown, in this position, the material supply unit 3 cannot be triggered to output the second fluid; the second position is defined as the effective working position, such as Figure 7 As shown, in this position, the substance supply unit 3 can be triggered to output the second fluid.

[0060] The loading mechanism 4 is connected to the material supply unit 3 and is used to apply a loading force to the material supply unit 3. In this embodiment, the loading mechanism 4 can be manually operated in advance, for example, by squeezing the actuating unit 5 to apply a loading force to the material supply unit 3, so that after the valve unit 6 is unlocked, the material supply unit 3 can be driven to move from the first position to the second position.

[0061] The actuating unit 5 is linked with the loading mechanism 4, and the user can drive the loading mechanism 4 to provide the loading force by operating the actuating unit 5. In this embodiment, the actuating unit 5 is rotatably arranged on one side of the housing 1 and connected to the loading mechanism 4. This design facilitates the user to apply the actuating force by gripping and pressing, which improves the convenience of operation compared to the conventional up and down pressing to apply the actuating force.

[0062] Still see Figure 6As shown, in the dust-proof nasal spray (single-power nasal spray), in the initial state, the material supply unit 3 is locked in the first position. In some embodiments, the material supply unit 3 can be directly restricted in the first position by a locking member (such as a pin, a hook, etc., not shown), or can be indirectly restricted in the first position by cooperating with the loading mechanism 4 through the locking member.

[0063] Exemplarily, the locking member in this embodiment is a valve unit 6, which is arranged on one side of the material supply unit 3 and can be engaged with the loading mechanism 4 to indirectly lock the material supply unit 3 in the first position. Without being unlocked, the material supply unit 3 always remains in the first position, that is, the invalid working position. Therefore, regardless of whether the actuating unit 5 is operated, the material supply unit 3 does not have the possibility of triggering the injection, thereby realizing the function of preventing misoperation and improving the reliability of the device.

[0064] like Figure 7 As shown, when in use, the user operates the actuating unit 5 to drive the loading mechanism 4 to apply a loading force to the material supply unit 3. After the lock is released (the toggle valve unit 6 is separated from the loading mechanism 4), the material supply unit 3 moves to the second position and delivers the second fluid through the nozzle 2.

[0065] It is worth noting that in this device, since the material supply unit 3 is always subjected to a loading force by the loading mechanism 4, at the moment when the valve unit 6 is unlocked, the material supply unit 3 will quickly move to the second position in a catapult-like motion. Compared with the conventional method of driving the material supply unit 3, the trigger force acting on the material supply unit 3 is greater and faster. Accordingly, the material supply unit 3 will also move quickly and deliver the second fluid to a farther position by squeezing the pump assembly 32, thereby effectively improving the delivery stroke.

[0066] In addition, the dust-proof nasal spray of the present application can also be a dual-power nasal spray, that is, when the single-power operation causes the drug to be sprayed, the additional first fluid is output through the mouthpiece 7 to provide additional power. Figures 1 to 5 As shown, the dust-proof nasal spray mainly includes a housing 1 , a nozzle 2 , a mouthpiece 7 , a material supply unit 3 , a loading mechanism 4 , an actuating unit 5 and a valve unit 6 .

[0067] The housing 1, the nozzle 2, the material supply unit 3, the loading unit and the actuating unit 5 may be arranged in accordance with the arrangement of a single-power nasal sprayer, which will not be repeated here.

[0068] The mouthpiece 7 is arranged on the housing 1 and is sealed to the housing 1. When in use, the mouthpiece 7 is arranged at the user's mouth, so that the user outputs the first fluid through the mouthpiece 7, and the first fluid is the mouth-blown gas from the user's mouth, thereby providing power to assist the delivery of the second fluid.

[0069] The valve unit 6 is arranged in the flow passage connecting the mouthpiece 7 and the pipe mouth 2 ( Figure 5 The arrow in the middle shows the complete flow channel), and is preferably arranged at one end of the flow channel close to the mouthpiece 7. The valve unit 6 has two main functions: on the one hand, it locks the substance supply unit 3 in the first position to achieve the function of preventing misoperation; on the other hand, it cooperates with the second fluid to provide constant power assistance to optimize the drug administration operation.

[0070] See also Figure 2 and Figure 3 As shown, in the initial state of the dust-proof nasal spray (dual-power nasal spray), the valve unit 6 cuts off the flow path and locks the material supply unit 3 in the first position. It should be noted that the valve unit 6 here also indirectly locks the material supply unit 3 in the first position by snap-fitting through the loading mechanism 4, so that it cannot be triggered to spray, thereby preventing waste and pollution caused by misoperation.

[0071] And due to the cut-off effect of the valve unit 6 itself, most of the flow channels in the shell 1 are in a closed state, and external gas cannot enter the interior of the shell 1, so it has a good dust-proof effect, can effectively prevent flow channel pollution, and improve the cleanliness and sanitary quality of the device.

[0072] When the pressure of the first fluid reaches the preset pressure, the pressure of the first fluid will drive the valve unit 6 to unlock, so that the material supply unit 3 moves to the second position under the driving force of the loading force and outputs the second fluid, and at the same time, the flow channel is connected so that the first fluid can provide constant power assistance to the second fluid. This makes the device spray more powerful and stronger, making it easier to deliver and settle the drug in the nasal vestibule, and when the user outputs the first fluid, the soft palate connecting the oral cavity and the nasal cavity is closed, which will avoid adverse reactions or drug degradation caused by some drugs entering the esophagus through the nasal cavity.

[0073] Figures 3 to 5 The flow process of the valve unit 6 is shown, and the flow channel part is introduced first. In the present embodiment, the flow channel includes an air storage chamber 8, which is a fan-shaped structure and is provided with an inlet 81 and an outlet 82. Among them, the mouthpiece 7 is sealed and connected to the inlet 81, and the valve unit 6 is rotatably arranged between the inlet 81 and the outlet 82. The valve unit 6 is configured as an air-driven control member, which can selectively control the opening and closing state of the outlet 82 according to the pressure of the first fluid. In short, the valve unit 6 has two deflection strokes: in the first deflection stroke, the outlet 82 is closed, and the first fluid enters the air storage chamber 8 from the inlet 81 and continues to accumulate; in the second deflection stroke, the outlet 82 is opened, and the first fluid flows rapidly from the air storage chamber 8 to the nozzle 2.

[0074] As an example, a first arc surface 83 is provided on one side of the inlet 81, and a second arc surface 84 and a third arc surface 85 are provided on both sides of the outlet 82. The first arc surface 83 is arranged concentrically with the second arc surface 84, and the arc length of the first arc surface 83 is greater than the arc length of the second arc surface 84. The valve unit 6 is rotatably arranged at the arc center of the air storage chamber 8, and the valve unit 6 includes a first rotating part 61, a second rotating part 62 and a third rotating part 63. The first rotating part 61 is always in sealing cooperation with the first arc surface 83, and the third rotating part 63 is always in sealing cooperation with the third arc surface 85, so as to ensure the sealing of the valve unit 6 during the operation. However, in the first deflection stroke, the valve unit 6 is affected by the first fluid continuously input, and the second rotating part 62 and the second arc surface 84 will turn from the sealing cooperation to the sealing critical point, and in the second deflection stroke, the second rotating part 62 and the second arc surface 84 will turn from the sealing critical point to form a gap. At this time, the first fluid reaching the preset pressure will quickly flow from the notch to the nozzle 2, providing constant power assistance, while the valve unit 6 is unlocked and separated from the loading mechanism 4, and the material supply unit 3 quickly moves to the second position and outputs the second fluid, which is mixed with the first fluid and delivered to the user's nose through the nozzle 2. The cooperation between the valve unit 6 and the loading mechanism 4 will be described later.

[0075] It should be emphasized that in this device, since the force driving the valve unit 6 to separate from the loading mechanism 4 is constant, that is, only when the pressure of the first fluid reaches the constant force, that is, the preset pressure, the valve unit 6 will unlock the material supply unit 3 from the first position and open the flow channel, which makes the blowing force of the first fluid flowing to the nozzle 2 always constant and controllable, and the power assistance formed by the blowing force is very stable, and there is no fluctuation. Compared with conventional dual-power nasal sprayers, the design of regulating the blowing force of the first fluid by the valve unit 6 in this application makes the depth of drug delivery to the nose close to the same each time, which is conducive to precise treatment.

[0076] Furthermore, the air storage chamber 8 is also provided with an air hole 86, so that during the resetting process of the valve unit 6 (the valve unit 6 is provided with a resetting torsion spring at the rotating position), air is taken in through the air hole 86 to balance the internal and external air pressures of the air storage chamber 8, thereby ensuring the smoothness of the resetting of the valve unit 6.

[0077] See also Figure 2 As shown, in some embodiments, the housing 1 includes a first half shell 11 and a second half shell 12 that are arranged opposite to each other. The first half shell 11 and the second half shell 12 can be arranged opposite to each other up and down or left and right, and the two can be detachably connected and fixed, so that the user can replace the material supply unit 3 under the guidance of medical staff, thereby reducing the cost of use. Of course, in some other embodiments, the housing 1 after the first half shell 11 and the second half shell 12 are combined can also be non-detachable, so that the device becomes a disposable device.

[0078] See also Figures 3 to 7 As shown, in some embodiments, the substance supply unit 3 includes a nozzle 31, a pump assembly 32 and a fluid container 33. The fluid container 33 may be a bottle structure, which is used to store the second fluid. The pump assembly 32 may be a mechanical infusion pump or a powder delivery pump, which is used to deliver a prescribed dose of the second fluid from the fluid container 33 to the nozzle 31. The nozzle 31 is disposed in the nozzle 2, protected by the nozzle 2, and is used to convert the second fluid into a spray or jet, thereby increasing the contact area between the drug and the nose and improving the treatment effect.

[0079] Furthermore, an annular channel 21 is formed between the nozzle 31 and the pipe mouth 2, and the annular diameter of at least part of the annular channel 21 gradually decreases along the delivery direction of the second fluid, so that the first fluid is squeezed when passing through the annular channel 21 and the flow rate is accelerated in the area with a smaller annular diameter, thereby enhancing the power assist effect of the first fluid.

[0080] See also Figures 3 to 7 As shown, in some embodiments, the loading mechanism 4 includes a first barrel 41 , which is sleeved on the bottom of the material supply unit 3 , and the material supply unit 3 is locked in the first position by the first barrel 41 .

[0081] See Figure 3 and Fig. 9 As shown, a locking tongue 411 is provided at the top of the first tube 41. The locking tongue 411 is generally in an inclined triangular structure, including a first locking surface 4111 and a first guide surface 4112. Correspondingly, a locking protrusion 64 is provided on the valve unit 6 to cooperate with the locking tongue 411. The locking protrusion 64 has a second locking surface 641 inclined downward, and a second guide surface 642 is provided on the outer side of the locking protrusion 64 above the second locking surface 641.

[0082] In the initial state, the locking tongue 411 is locked into the locking protrusion 64 by the loading force, the first locking surface 4111 and the second locking surface 641 are locked with each other, the position of the first tube 41 is restricted, and the material supply unit 3 is locked in the first position. Figure 4 As shown, as the first fluid drives the valve unit 6 to rotate to the second deflection stroke, the second locking surface 641 gradually separates from the first locking surface 4111. Under the action of the pre-applied loading force, the first tube 41 moves upward to drive the material supply unit 3 to move from the first position to the second position to output the second fluid, which is the action of drug spraying. When the user cancels the loading force, for example, after releasing the grip on the actuating unit 5, the material supply unit 3 can be reset to the first position. During this process, the first guide surface 4112 moves along the second guide surface 642, so that the locking tongue 411 is re-engaged in the locking protrusion 64 and restored to the initial state.

[0083] In addition, the loading mechanism 4 further includes a second tube 42 and an elastic member 43 .

[0084] The second tube 42 is sleeved on the bottom of the first tube 41, and the two are slidably matched. Note that there should be a certain gap between the second tube 42 and the first tube 41 to prevent the first tube 41 from moving away from the second tube 42 to generate negative pressure adsorption and weaken the loading force.

[0085] The elastic member 43 is disposed between the first tube 41 and the second tube 42. For example, the elastic member 43 may be a spring, and a spring seat is provided below the first tube 41 and at the inner bottom of the second tube 42. Both ends of the spring are clamped on the two spring seats. The second tube 42 can be operated to move toward the first tube 41 to compress the elastic member 43 to obtain a loading force. For example, the second tube 42 can be driven to move toward the first tube 41 by operating the actuating unit 5. See the following description for details.

[0086] Furthermore, a stopper 412 is provided in the middle of the first cylinder 41. As an example, there are two stoppers 412, which are symmetrically distributed on both sides of the first cylinder 41 to improve the stability of the movement of the first cylinder 41. Correspondingly, a limiting groove 421 is provided on the inner wall of the second cylinder 42, and the length direction of the limiting groove 421 is parallel to the longitudinal axis direction of the device. By slidingly matching the stopper 412 with the limiting groove 421, the first cylinder 41 and the second cylinder 42 are prevented from being separated or the locking tongue 411 on the first cylinder 41 is hit to cause the loading mechanism 4 structure to be damaged.

[0087] Furthermore, a seal 9 is provided between the inner wall of the housing 1 and the second tube 42 to keep the inner wall of the housing 1 and the loading mechanism 4 sealed, thereby preventing leakage of the first fluid and ensuring that the strength of the power assist is not affected. Exemplarily, the seal 9 can be a sealing ring, and the inner wall of the housing 1 is provided with a sealing groove 14, the sealing ring is installed in the sealing groove 14, and is always sealed with the outer periphery of the second tube 42.

[0088] Furthermore, the inner wall of the housing 1 is provided with a guide groove 15, the length direction of which is parallel to the longitudinal axis of the device. Correspondingly, a slider 422 is also provided on the outer side of the second tube 42, and the slider 422 is slidably arranged in the guide groove 15, thereby improving the stability of the movement of the second tube 42 through the guiding effect.

[0089] In some embodiments, the deflection angle of the actuating unit 5 is 30°-60°, and preferably 30°-40°, so as to facilitate the user's gripping operation.

[0090] See also Figure 2 and Figure 8 As shown, in some embodiments, the actuating unit 5 includes a pressing portion 51 and a connecting portion 52 .

[0091] Among them, the pressing part 51 is roughly a trapezoidal structure, one end of the pressing part 51, such as the upper end, is rotatably connected to the inside of the shell 1 (a reset torsion spring is provided at the rotation point of the pressing part 51), and the pressing part 51 at least partially protrudes from the outer contour of the shell 1.

[0092] The connecting portion 52 extends from the pressing portion 51 into the housing 1. As an example, there are two connecting portions 52, which are symmetrically distributed on both sides of the pressing direction of the pressing portion 51 to improve the balance of the actuation force, and the connecting portion 52 can be integrally formed with the pressing portion 51. A guide groove 521 is provided on the connecting portion 52, and correspondingly, a follower block 423 matching the guide groove 521 is provided on the outer side of the second cylinder 42 of the loading mechanism 4. When the user squeezes the pressing portion 51, the connecting portion 52 drives the follower block 423 to move through the guide groove 521, causing the second cylinder 42 to move along the longitudinal axis of the device, and forming a loading force by squeezing the elastic member 43.

[0093] Furthermore, the guide slot 521 includes an inclined driving section 5211 and an anti-slip section 5212 connecting the two ends of the driving section 5211. During the actuation process, as the guide slot 521 moves toward the inside of the housing 1, the driving section 5211 can drive the driven block 423 to move upward, thereby driving the second cylinder 42 to move toward the first cylinder 41. After the actuation force is withdrawn, during the resetting process of the pressing portion 51, the anti-slip section 5212 can prevent the driving section 5211 from being separated from the driven block 423, thereby avoiding affecting the next actuation operation.

[0094] See also Figures 1 to 5 As shown, in some embodiments, the angle between the nozzle 2 and the mouthpiece 7 is 30°-70°, and the preferred angle is 35°-45° to facilitate user operation.

[0095] In certain embodiments, an antibacterial layer (not shown) is provided on the inner wall of the mouthpiece 7 and / or the mouth of pipe 2 to prevent or reduce microbial growth, and ensure health and safety in use. Exemplary, the antibacterial layer can be a healthy non-toxic coating such as a titanium dioxide layer, an antibacterial polymer layer, and an antibacterial nano coating. Preferably, the antibacterial layer is a nano silver layer in the present application, and the silver ions released by the nano silver layer have a certain killing effect on bacteria, fungi and viruses, and can prevent the growth and spread of microorganisms inside the mouthpiece 7 and / or the mouth of pipe 2. In addition, the nano silver layer has good electrical conductivity, and when the mouthpiece 7 and / or the mouth of pipe 2 contact the human body, the static electricity generated during the use of the device can be guided to the earth by the human body, realizing the function of removing static electricity, and avoiding electrostatic adsorption from affecting the delivery stroke of drug delivery.

[0096] See also Figures 3 to 5As shown, in some embodiments, a dustproof sheet 10 is provided in the mouthpiece 7; in the initial state, the dustproof sheet 10 is closed and blocks the mouthpiece 7, thereby achieving a dustproof effect and preventing the flow channel in the housing 1 from being contaminated. When the user outputs the first fluid through the mouthpiece 7, the dustproof sheet 10 is passively opened by the pressure of the first fluid, thereby satisfying the auxiliary function of normal blowing.

[0097] For example, see Fig.10 In the present application, the dustproof sheet 10 is generally made of elastic material, such as silicone, elastic plastic, etc. The dustproof sheet 10 matches the inner contour of the mouthpiece 7, and a "cross" or "one" dividing line is set in the middle to divide the dustproof sheet 10 into multiple independent parts. When the user outputs the first fluid through the mouthpiece 7, each independent part is impacted by the airflow and bends, and the first fluid is allowed to pass through. After the blowing force is removed, each independent part is reset to re-form a complete dustproof sheet 10 to achieve the dustproof effect.

[0098] It should be noted that the dustproof sheet can be arranged alone in the blowing port 7 to achieve dustproof, or it can cooperate with the valve unit 6 to cut off the flow channel to achieve dustproof, thereby achieving a double dustproof effect.

[0099] See also Figures 1 to 5 As shown, the utility model also discloses a method for delivering fluid to the nasal airway of a user, which method is applicable to the above-mentioned dual-power nasal sprayer and includes steps S1 to S5.

[0100] S1. Provide a dust-proof nasal spray. The device comprises a nozzle 2, a mouthpiece 7, a material supply unit 3, a loading unit, an actuating unit 5 and a valve unit 6.

[0101] S2. Apply a loading force to the material supply unit 3 of the dust-proof nasal spray and lock it in the first position. Specifically, the user can squeeze the actuation unit 5 to make the loading mechanism 4 apply a loading force to the material supply unit 3, and the valve unit 6 cooperates with the loading mechanism 4 to lock the material supply unit 3 in the first position.

[0102] S3. The nozzle 2 and the mouthpiece 7 of the dustproof nasal spray are respectively arranged on the nose and mouth of the user. Specifically, the nozzle 2 can be inserted into the nose of the user to a depth of not less than 2 cm to improve the sealing between the nozzle 2 and the nose of the user and ensure the delivery depth of the drug. The mouthpiece 7 is held by the mouth of the user, and it is noted that the patency of the mouthpiece 7 is not damaged.

[0103] S4, the user outputs the first fluid through the mouthpiece 7, and the pressure of the first fluid causes the material supply unit 3 to be unlocked from the first position. Specifically, as the first fluid is continuously output, the valve unit 6 is driven to deflect, and the locking protrusion 64 on the valve unit 6 gradually separates from the locking tongue 411 on the loading mechanism 4, until the locking protrusion 64 is completely separated from the locking tongue 411, at which time the material supply unit 3 is unlocked from the first position.

[0104] S5, the material supply unit 3 moves to the second position, and delivers the second fluid to the nasal airway through the nozzle 2, and at the same time, the first fluid flows to the nozzle 2 and provides constant power assistance to the second fluid. Specifically, since the actuating unit 5 is always in a gripped state, the loading force applied by the loading mechanism 4 always acts on the material supply unit 3. At the moment of unlocking, the loading force is released to drive the material supply unit 3 to move to the second position to output the second fluid. At the same time, the valve unit 6 also conducts the flow channel, causing the first fluid to flow to the nozzle 2 to provide constant power assistance for the delivery of the second fluid.

[0105] It should be noted that the above method adopts a mode of pressing first and then blowing, that is, the user first squeezes the actuator to make the loading mechanism 4 apply a loading force to the material supply unit 3 locked in the first position, and then blows in gas to make the valve unit 6 synchronously complete the functions of unlocking the position and conducting the fluid. This design makes the blowing force of the first fluid always constant and controllable. Compared with the conventional dual-power nasal spray mode of blowing first and then pressing / blowing and pressing synchronously, the method of the present application accumulates air in the air storage chamber, and the air pressure can only be output for power assistance after reaching the preset pressure, and the air blowing is used to unlock the restriction to synchronously output the drug. This method is compatible with all people, simple to operate, and the blowing force of the first fluid is controllable. The depth of drug delivery to the nose is nearly consistent each time, which is more conducive to precise treatment.

[0106] In addition, before being unlocked by blowing force, no matter whether the actuating unit 5 is operated or not, the material supply unit 3 has no possibility of triggering the injection, thus realizing the function of preventing misoperation; during this period, the valve unit 6 cuts off the flow channel and also plays a dust-proof role, thereby improving the cleanliness and hygienic quality inside the device.

[0107] After being unlocked by the blowing force, the loading force can instantly trigger the substance supply unit 3, so that the pump assembly 32 delivers the second fluid to a farther position, thereby effectively increasing the drug delivery depth.

[0108] In some embodiments, the end of the nozzle 2 close to the user's nose is tapered. The nozzle 2 with a tapered structure can adapt to the noses of different users and keep it centered after being inserted into the nose, reducing the collision between the second fluid and the nasal airway and improving the delivery effect.

[0109] In some embodiments, during step S4 to step S5, the user's soft palate is in a closed state, which can prevent adverse reactions or drug degradation caused by some drugs entering the esophagus through the nasal cavity, thereby improving the treatment effect.

[0110] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the utility model. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the utility model without departing from the principles and purpose of the utility model. All of these changes should fall within the scope of protection of the claims of the utility model.

Claims

1. A dust-proof nasal spray, characterized in that: include: Housing (1); A mouthpiece (7) and a pipe mouth (2); the mouthpiece (7) and the pipe mouth (2) are arranged on the shell (1), and the two are connected through a flow channel in the shell (1); a valve unit (6), the valve unit (6) being arranged in the flow channel at a position close to the mouthpiece (7); A dustproof sheet (10), wherein the dustproof sheet (10) is arranged in the blowing port (7); In the initial state, the valve unit (6) cuts off the flow channel and the dustproof sheet (10) closes and blocks the blowing port, thereby limiting the entry of air into the interior of the housing (1); When the blowing port (7) outputs the first fluid, the dustproof sheet (10) is passively opened by the pressure of the first fluid, and then the valve unit (6) opens the flow channel and allows the first fluid to flow toward the pipe port (2).

2. The dust-proof nasal spray according to claim 1, characterized in that: The flow channel comprises an air storage chamber (8), wherein the air storage chamber (8) is provided with an inlet (81) and an outlet (82); The valve unit (6) is rotatably disposed between the inlet (81) and the outlet (82), and can selectively control the opening and closing state of the outlet (82) according to the pressure of the first fluid.

3. The dust-proof nasal spray according to claim 2, characterized in that: The valve unit (6) has two deflection strokes: In the first deflection stroke, the outlet (82) is closed, and the first fluid enters the air storage chamber (8) from the inlet (81) and continues to accumulate; In the second deflection stroke, the outlet (82) is opened, and the first fluid flows from the air storage chamber (8) to the pipe mouth (2).

4. The dust-proof nasal spray according to claim 3, characterized in that: A first arc surface (83) is provided on one side of the inlet (81), and a second arc surface (84) and a third arc surface (85) are respectively provided on both sides of the outlet (82); The valve unit (6) comprises a first rotating part (61), a second rotating part (62) and a third rotating part (63); wherein the first rotating part (61) is always in sealing cooperation with the first arc surface (83), and the third rotating part (63) is always in sealing cooperation with the third arc surface (85); in a first deflection stroke, the second rotating part (62) and the second arc surface (84) are rotated from the sealing cooperation to the sealing critical point, and in a second deflection stroke, the second rotating part (62) and the second arc surface (84) are rotated from the sealing critical point to form a gap.

5. The dust-proof nasal spray according to claim 1, characterized in that: It also comprises a material supply unit (3), wherein the material supply unit (3) is arranged inside the housing (1) and partially extends into the nozzle (2); The material supply unit (3) is used to store the second fluid and can deliver the second fluid out of the nozzle (2) under the driving force of an external force.

6. The dust-proof nasal spray according to claim 5, characterized in that: It also includes a loading mechanism (4), wherein the loading mechanism (4) is connected to the material supply unit (3); In an initial state, the valve unit (6) is engaged with the loading mechanism (4) so ​​that the material supply unit (3) is locked in a first position.

7. The dust-proof nasal spray according to claim 6, characterized in that: The loading mechanism (4) is manually operated in advance to apply a loading force to the material supply unit (3) so as to drive the material supply unit (3) to move from a first position to a second position after the valve unit (6) is unlocked.

8. The dust-proof nasal spray according to claim 6, characterized in that: It also comprises an actuating unit (5), which is rotatably arranged on one side of the housing (1) and connected to the loading mechanism (4).

9. The dust-proof nasal spray according to claim 1, characterized in that: The dustproof sheet (10) is made of elastic silica gel or plastic.

10. The dust-proof nasal spray according to claim 1, characterized in that: An antibacterial layer is provided on the inner wall of the blowing port (7) and / or the pipe mouth (2).

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