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

[0001] This application is a divisional application of Chinese patent application CN202420590811.0, filed on March 26, 2024, entitled "A Powder Inhalation Device". Technical Field

[0002] This utility model relates to the field of medical devices, and in particular to a dustproof nasal spray. Background Technology

[0003] With environmental degradation, the number of nasal diseases is on the rise. Nasal delivery devices, which deliver medication directly to the nose, are widely used in nasal treatment. Medical evidence shows that daily nasal irrigation can effectively relieve various rhinitis symptoms such as nasal congestion and runny nose, and reduce the invasion of bacteria and allergens into the nasal cavity, thereby improving the body's respiratory immunity.

[0004] Chinese Patent No. CN 112999499 A discloses a fluid dispensing device that enhances the force of drug ejection by means of mouth-blown gas output by the user, so that the drug reaches a predetermined drug delivery location.

[0005] However, in actual use, it has been found that because 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 can easily cause contamination in the flow channel. When in use, the contaminants enter the human nasal cavity through the fluid outlet, which may aggravate the condition and harm human health. Utility Model Content

[0006] The purpose of this invention is to provide a dustproof nasal spray that can prevent dust from entering the device and avoid treatment problems caused by contamination of the flow channel.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A dust-proof nasal spray, comprising:

[0009] shell;

[0010] The nozzle and the pipe opening are disposed on the housing and connected by a flow channel within the housing.

[0011] A valve unit is disposed in the flow channel near the nozzle;

[0012] Dustproof sheet, wherein the dustproof sheet is disposed inside the blowhole;

[0013] In the initial state, the valve unit cuts off the flow channel while the dustproof plate closes and seals the nozzle, thereby limiting the entry of air into the interior of the outer casing;

[0014] When the nozzle outputs the first fluid, the dustproof plate is passively opened by the pressure of the first fluid, and then the valve unit opens the flow channel and causes the first fluid to flow to the nozzle.

[0015] In some embodiments, the flow channel includes an air storage chamber, which is provided with an inlet and an outlet;

[0016] The valve unit is rotatably disposed between the inlet and the outlet, and can selectively control the opening and closing state of the outlet according to the pressure of the first fluid.

[0017] In some embodiments, the valve unit has two deflection strokes:

[0018] During the first deflection stroke, the outlet is closed, and the first fluid enters the gas storage chamber from the inlet and continues to accumulate;

[0019] During the second deflection stroke, the outlet opens, and the first fluid flows from the gas storage chamber to the pipe opening.

[0020] In some embodiments, a first arc surface is provided on one side of the inlet, and a second arc surface and a third arc surface are provided on both sides of the outlet, respectively;

[0021] 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 a sealing fit with the first arc surface, and the third rotating part is always in a sealing fit with the third arc surface; during the first deflection stroke, the second rotating part and the second arc surface rotate from a sealing fit to a sealing critical point, and during the second deflection stroke, the second rotating part and the second arc surface rotate from the sealing critical point to form a notch.

[0022] In some embodiments, a material supply unit is also included, which is disposed inside the housing and extends partially into the port.

[0023] The material supply unit is used to store the second fluid and is capable of delivering the second fluid out of the nozzle under external force.

[0024] In some embodiments, a loading mechanism is also included, which is connected to the material supply unit;

[0025] In the initial state, the valve unit engages with the loading mechanism to lock the material supply unit in the first position.

[0026] In some embodiments, the loading mechanism is manually operated beforehand to apply a loading force to the material supply unit so as to drive the material supply unit from a first position to a second position after the valve unit is unlocked.

[0027] In some embodiments, an actuation unit is further included, which is rotatably disposed on one side of the housing and connected to the loading mechanism.

[0028] In some embodiments, an antibacterial layer is provided on the inner wall of the nozzle and / or the tube opening.

[0029] In some embodiments, a dustproof sheet is provided inside the nozzle;

[0030] In the initial state, the dustproof sheet is closed and blocks the nozzle. When the user outputs the first fluid through the nozzle, the dustproof sheet is passively opened by the pressure of the first fluid.

[0031] Compared with the prior art, the beneficial effects of this utility model include at least the following: when the device is not in use, the dustproof sheet blocks the nozzle and the valve unit cuts off the flow channel, thereby achieving a dual dustproof function to limit the entry of the atmosphere into the interior of the shell and avoid treatment problems caused by flow channel contamination. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of a dual-power-driven dust nasal spray.

[0033] Figure 2 This is an exploded view of the dual-powered dust nasal spray.

[0034] Figure 3 This is a schematic diagram of the structure of a dual-power driven dust nasal spray in the first position with the valve unit locked.

[0035] Figure 4 This is a schematic diagram of the structure of a dual-powered dust nasal spray in the first position and with the valve unit at the critical sealing point.

[0036] Figure 5 This is a schematic diagram of the structure of a dual-powered dust nasal spray in the second position with the valve unit unlocked.

[0037] Figure 6 This is a schematic diagram of a single-power-driven dust nasal spray in the first position with the valve unit locked.

[0038] Figure 7 This is a schematic diagram of a single-power-driven dust nasal spray in the second position with the valve unit unlocked.

[0039] Figure 8 This is a schematic diagram of the connection structure between the actuation unit and the loading structure.

[0040] Figure 9 This is a schematic diagram showing the coordination between the valve unit, the loading mechanism, and the air storage chamber.

[0041] Figure 10 This is a schematic diagram of the structure of the dustproof sheet inside the nozzle.

[0042] In the picture:

[0043] 1. Outer shell; 11. First half-shell; 12. Second half-shell; 13. Mounting cavity; 14. Sealing groove; 15. Guide groove;

[0044] 2. Pipe opening; 21. Ring channel;

[0045] 3. Material supply unit; 31. Nozzle; 32. Pump assembly; 33. Fluid container;

[0046] 4. Loading mechanism; 41. First cylinder; 411. Locking tongue; 4111. First locking surface; 4112. First guide surface; 412. Stop; 42. Second cylinder; 421. Limiting groove; 422. Slider; 423. Driven block; 43. Elastic element;

[0047] 5. Actuation unit; 51. Pressing part; 52. Connecting part; 521. Guide groove; 5211. Drive section; 5212. Anti-detachment section;

[0048] 6. Valve unit; 61. First rotating part; 62. Second rotating part; 63. Third rotating part; 64. Locking protrusion; 641. Second locking surface; 642. Second guide surface;

[0049] 7. Mouthpiece;

[0050] 8. Air storage chamber; 81. Inlet; 82. Outlet; 83. First arc surface; 84. Second arc surface; 85. Third arc surface; 86. Air vent;

[0051] 9. Sealing components;

[0052] 10. Dustproof sheet. Detailed Implementation

[0053] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many 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 concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0054] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0055] See Figures 1 to 9As shown, this utility model discloses a dustproof nasal spray, which is mainly used in the treatment of nasal diseases. By delivering the drug to the deep respiratory tract, it improves the absorption efficiency of the drug and reduces the degradation of the drug in the digestive system, thereby achieving the therapeutic effect more quickly.

[0056] The dust-proof nasal spray of this application can be a single-powered nasal spray, that is, operated by only one power source, such as a manual switch, to spray the medication. See also 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 actuation unit 5.

[0057] The outer shell 1 is constructed as a one-handed gripper, and it houses a material supply unit 3, a loading mechanism 4, and a portion of an actuation unit 5. In this embodiment, the outer shell 1 is generally an elongated box, and an installation cavity 13 is provided inside the outer shell 1. The material supply unit 3 and the loading mechanism 4 can both be housed and protected within the installation cavity 13.

[0058] The nozzle 2 is located on the outer casing 1, so that the nozzle 2 is sealed to the outer casing 1. In use, the nozzle 2 is positioned to the user's nose, and in conjunction with the action of the material supply unit 3, the second fluid is delivered to the user's nasal airway.

[0059] The material supply unit 3 is used to store a second fluid, which can be a powder, granular, or liquid substance, and has a specific therapeutic effect.

[0060] 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 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 inactive 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 material supply unit 3 can be triggered to output the second fluid.

[0061] 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 applying a loading force to the material supply unit 3 by gripping the actuating unit 5, so that after the valve unit 6 is released from locking, the material supply unit 3 can be driven to move from the first position to the second position.

[0062] The actuation unit 5 works in conjunction with the loading mechanism 4, allowing the user to drive the loading mechanism 4 to provide loading force by operating the actuation unit 5. In this embodiment, the actuation unit 5 is rotatably mounted on one side of the housing 1 and connected to the loading mechanism 4. This design facilitates the user's gripping and pressing to apply the actuating force, improving the ease of operation compared to the conventional up-and-down pressing method.

[0063] Still see Figure 6 As shown, in its initial state, the material supply unit 3 of the dust-proof nasal spray (single-power nasal spray) is locked in the first position. In some embodiments, the material supply unit 3 can be directly restricted to the first position by a locking member (such as a pin, hook, or other component, not shown), or it can be indirectly restricted to the first position by the locking member cooperating with the loading mechanism 4.

[0064] For example, in this embodiment, the locking element is a valve unit 6. The valve unit 6 is located on one side of the material supply unit 3 and can engage with the loading mechanism 4 to indirectly lock the material supply unit 3 in the first position. Without unlocking, the material supply unit 3 remains in the first position, i.e., the inactive working position. Therefore, regardless of whether the actuation unit 5 is operated, the material supply unit 3 has no possibility of triggering injection, thereby achieving the function of preventing misoperation and improving the reliability of the device.

[0065] like Figure 7 As shown, during use, the user operates the actuation 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 port 2.

[0066] 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 the valve unit 6 is unlocked, the material supply unit 3 will move quickly to the second position with a similar ejection action. Compared with the conventional way of driving the material supply unit 3, the triggering force acting on the material supply unit 3 is greater and the speed is faster. Correspondingly, the material supply unit 3 will also move quickly and deliver the second fluid to a more distant position through the squeeze pump assembly 32, thereby effectively improving the delivery stroke.

[0067] Furthermore, the dust-proof nasal spray of this application can also be a dual-power nasal spray, that is, while the single-power operation sprays the medication, an additional first fluid output through the nozzle 7 provides additional power. See also Figures 1 to 5 As shown, the dustproof nasal spray mainly includes a housing 1, a nozzle 2, a blow nozzle 7, a material supply unit 3, a loading mechanism 4, an actuation unit 5, and a valve unit 6.

[0068] The outer shell 1, the nozzle 2, the material supply unit 3, the loading unit and the actuation unit 5 can be arranged with reference to the single-power nasal sprayer, and will not be repeated here.

[0069] The nozzle 7 is disposed on the housing 1 and is sealed to the housing 1. In use, the nozzle 7 is positioned to the user's mouth, allowing the user to output a first fluid through the nozzle 7. The first fluid is mouth-blown gas from the user's mouth, thereby providing power to assist in the delivery of a second fluid.

[0070] Valve unit 6 is located in the flow channel connecting the blow port 7 and the pipe port 2. Figure 5 The valve unit 6 (as indicated by the middle arrow, which represents the complete flow channel) is preferably located at one end of the flow channel near the nozzle 7. This valve unit 6 has two main functions: firstly, to lock the material supply unit 3 in the first position to prevent misoperation; secondly, to provide constant power assistance and optimize drug delivery by cooperating with the second fluid.

[0071] See Figure 2 and Figure 3 As shown, in the initial state, the valve unit 6 cuts off the flow channel and locks the material supply unit 3 in the first position. It should be noted that the valve unit 6 also indirectly locks the material supply unit 3 in the first position through the loading mechanism 4 in a snap-fit ​​manner, so that it cannot be triggered to spray, thereby preventing waste and pollution caused by misoperation.

[0072] Furthermore, due to the shut-off function of the valve unit 6, most of the flow channels inside the housing 1 are in a closed state, and external gas cannot enter the interior of the housing 1. Therefore, it has a good dustproof effect, effectively prevents flow channel contamination, and improves the cleanliness and hygiene quality of the device.

[0073] When the pressure of the first fluid reaches the preset pressure, the pressure of the first fluid will drive the valve unit 6 to release, thereby causing the material supply unit 3 to move to the second position under the drive of the loading force and output the second fluid. At the same time, the flow channel is opened, allowing the first fluid to provide constant power assistance to the second fluid. This makes the device spray more powerfully and intensely, making it easier to deliver the drug and settle it in the nasal vestibule. Furthermore, when the user outputs the first fluid, the soft palate connecting the oral cavity and nasal cavity closes, which will prevent some of the drug from entering the esophagus through the nasal cavity and causing adverse reactions or drug degradation.

[0074] Figures 3 to 5The operation flow of valve unit 6 is presented, starting with an introduction to the flow channel. In this embodiment, the flow channel includes an air storage chamber 8, which has a fan-shaped structure and is equipped with an inlet 81 and an outlet 82. The blowhole 7 is sealed to the inlet 81. Valve unit 6 is rotatably positioned between the inlet 81 and the outlet 82. Valve unit 6 is configured as a pneumatically driven control element, which can selectively control the opening and closing state of outlet 82 according to the pressure of the first fluid. In simple terms, valve unit 6 has two deflection strokes: in the first deflection stroke, 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, outlet 82 is open, and the first fluid flows rapidly from the air storage chamber 8 to the port 2.

[0075] 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, respectively. The first arc surface 83 and the second arc surface 84 are concentrically arranged, 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 disposed at the center of the gas storage chamber 8. 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 a sealed fit with the first arc surface 83, and the third rotating part 63 is always in a sealed fit with the third arc surface 85, thereby ensuring the sealing performance of the valve unit 6 during operation. However, during the first deflection stroke, the valve unit 6 is subjected to the action of the continuously input first fluid, causing the second rotating part 62 and the second arc surface 84 to rotate from a sealed fit to a sealing critical point. During the second deflection stroke, the second rotating part 62 and the second arc surface 84 rotate from the sealing critical point to form a gap. At this point, the first fluid, having reached the preset pressure, will rapidly flow from the opening to the nozzle 2, providing constant power assistance. Simultaneously, the valve unit 6 and the loading mechanism 4 will unlock and separate, and the material supply unit 3 will quickly move to the second position and output the second fluid. After mixing with the first fluid, the second fluid will be delivered to the user's nose through the nozzle 2. The cooperation between the valve unit 6 and the loading mechanism 4 will be explained later.

[0076] It is important to emphasize that in this device, because 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 this constant force, i.e., the preset pressure, will the valve unit 6 unlock the material supply unit 3 from the first position and open the flow channel. This ensures that the blowing force of the first fluid flowing to the nozzle 2 is always constant and controllable, and the power assistance provided by the blowing force is very stable, without any sudden fluctuations. Compared to conventional dual-power nasal sprays, the design of this application, which regulates the blowing force of the first fluid through the valve unit 6, ensures that the depth of drug delivery to the nose is nearly consistent each time, which is beneficial for achieving precise treatment.

[0077] Furthermore, the air storage chamber 8 is also provided with an air hole 86 so that during the reset process of the valve unit 6 (the valve unit 6 is provided with a reset torsion spring at the rotation point), air enters through the air hole 86 to balance the internal and external air pressure of the air storage chamber 8, thereby ensuring the smooth reset of the valve unit 6.

[0078] See Figure 2 As shown, in some embodiments, the outer shell 1 includes a first half-shell 11 and a second half-shell 12 disposed opposite to each other. The first half-shell 11 and the second half-shell 12 can be arranged vertically or horizontally opposite each other, and the two are detachably snap-fitted together to facilitate the user to replace the material supply unit 3 under the guidance of medical personnel, thereby reducing the cost of use. Of course, in other embodiments, the outer shell 1 after the combination of the first half-shell 11 and the second half-shell 12 may also be non-detachable, making the device a disposable instrument.

[0079] See 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 for storing a second fluid. The pump assembly 32 may be a mechanical infusion pump or powder delivery pump for delivering a predetermined dose of the second fluid from the fluid container 33 to the nozzle 31. The nozzle 31 is disposed within and protected by the opening 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 therapeutic effect.

[0080] Furthermore, an annular channel 21 is formed between the nozzle 31 and the orifice 2. The diameter of at least part of the annular channel 21 gradually decreases along the delivery direction of the second fluid. This causes the first fluid to be squeezed when passing through the annular channel 21 and to accelerate its flow rate in the region with a smaller annular diameter, thereby enhancing the dynamic assistance effect of the first fluid.

[0081] See Figures 3 to 7 As shown, in some embodiments, the loading mechanism 4 includes a first cylinder 41, which is sleeved on the bottom of the material supply unit 3, and the material supply unit 3 is locked in a first position by the first cylinder 41.

[0082] See details Figure 3 and Figure 9 As shown, the top of the first cylinder 41 is provided with a locking tongue 411, which is a generally inclined triangular structure, including a first locking surface 4111 and a first guide surface 4112. Correspondingly, the valve unit 6 is provided with a latching protrusion 64 that cooperates with the locking tongue 411. The latching protrusion 64 has a second locking surface 641 that is inclined downward, and a second guide surface 642 is provided on the outer side of the latching protrusion 64 above the second locking surface 641.

[0083] In the initial state, the locking tongue 411 is engaged with the locking protrusion 64 under the applied force, and the first locking surface 4111 and the second locking surface 641 lock each other, restricting the position of the first cylinder 41 and consequently locking the material supply unit 3 in the first position. (Continued...) 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 pre-applied loading force, the first cylinder 41 moves upward, driving the material supply unit 3 from the first position to the second position to output the second fluid, which is the action of drug spraying. When the user removes the loading force, for example, by releasing the grip on the actuator unit 5, the material supply unit 3 can return to the first position. During this process, the first guide surface 4112 moves along the second guide surface 642, causing the locking tongue 411 to re-engage in the locking protrusion 64, restoring it to its initial state.

[0084] In addition, the loading mechanism 4 also includes a second cylinder 42 and an elastic element 43.

[0085] The second cylinder 42 is fitted onto the bottom of the first cylinder 41, and the two are slidably fitted together. Note that there should be a certain gap between the second cylinder 42 and the first cylinder 41 to prevent the first cylinder 41 from moving away from the second cylinder 42, which would create negative pressure adsorption and weaken the loading force.

[0086] An elastic element 43 is disposed between the first cylinder 41 and the second cylinder 42. For example, the elastic element 43 may be a spring, and a spring seat is provided at the bottom of the first cylinder 41 and the inner bottom of the second cylinder 42, with the two ends of the spring respectively engaged on the two spring seats. The second cylinder 42 can be operated to move toward the first cylinder 41 to compress the elastic element 43 and obtain a loading force. For example, the second cylinder 42 can be driven to move toward the first cylinder 41 by operating the actuation unit 5, as detailed below.

[0087] Furthermore, a stop 412 is provided in the middle of the first cylinder 41. As an example, there are two stops 412, symmetrically distributed on both sides of the first cylinder 41, to improve the smoothness of the movement of the first cylinder 41. Correspondingly, a limiting groove 421 is provided on the inner wall of the second cylinder 42, the length direction of which is parallel to the longitudinal axis of the device. By sliding the stop 412 with the limiting groove 421, damage to the loading mechanism 4 structure is prevented from occurring due to the first cylinder 41 disengaging from the second cylinder 42 or the impact of the locking tongue 411 on the first cylinder 41.

[0088] Furthermore, a sealing element 9 is provided between the inner wall of the outer casing 1 and the second cylinder 42 to keep the inner wall of the outer casing 1 sealed with the loading mechanism 4, thereby preventing leakage of the first fluid and ensuring that the strength of the power assistance is not affected. For example, the sealing element 9 can be a sealing ring, and the inner wall of the outer casing 1 is provided with a sealing groove 14. The sealing ring is installed in the sealing groove 14 and is always in sealing fit with the outer periphery of the second cylinder 42.

[0089] Furthermore, the inner wall of the outer casing 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 cylinder 42, which is slidably disposed within the guide groove 15 to improve the stability of the movement of the second cylinder 42 through a guiding effect.

[0090] In some embodiments, the deflection angle of the actuation unit 5 is 30°-60°, preferably 30°-40°, to facilitate the user's gripping operation.

[0091] See Figure 2 and Figure 8 As shown, in some embodiments, the actuation unit 5 includes a pressing part 51 and a connecting part 52.

[0092] The pressing part 51 is generally trapezoidal in shape. One end of the pressing part 51, for example the upper end, is rotatably connected to the inside of the outer shell 1 (a reset torsion spring is provided at the rotatable part of the pressing part 51), and the pressing part 51 at least partially protrudes from the outer contour of the outer shell 1.

[0093] The connecting portion 52 extends from the pressing portion 51 into the outer casing 1. As an example, there are two connecting portions 52, symmetrically distributed on both sides of the pressing portion 51 in the pressing direction to improve the balance of the actuating force. The connecting portion 52 can be integrally formed with the pressing portion 51. The connecting portion 52 is provided with a guide groove 521. Correspondingly, the outer side of the second cylinder 42 of the loading mechanism 4 is provided with a driven block 423 that cooperates with the guide groove 521. When the user squeezes the pressing portion 51, the connecting portion 52 drives the driven block 423 to move through the guide groove 521, causing the second cylinder 42 to move along the longitudinal axis of the device, thereby forming a loading force by compressing the elastic member 43.

[0094] Furthermore, the guide groove 521 includes an inclined drive section 5211 and an anti-detachment section 5212 connecting the two ends of the drive section 5211. During actuation, as the guide groove 521 moves toward the interior of the housing 1, the drive section 5211 can drive the driven block 423 upward, thereby causing the second cylinder 42 to move toward the first cylinder 41. After the actuation force is released, during the reset process of the pressing part 51, the anti-detachment section 5212 can prevent the drive section 5211 from disengaging from the driven block 423, thus avoiding affecting the next actuation operation.

[0095] See Figures 1 to 5 As shown, in some embodiments, the included angle between the nozzle 2 and the blowhole 7 is 30°-70°, preferably 35°-45°, to facilitate user operation.

[0096] In some embodiments, an antibacterial layer (not shown) is provided on the inner wall of the nozzle 7 and / or the port 2 to prevent or reduce microbial growth and ensure health and safety during use. Exemplarily, the antibacterial layer can be a healthy and non-toxic coating such as a titanium dioxide layer, an antibacterial polymer layer, or an antibacterial nano-coating. Preferably, in this application, the antibacterial layer is a nano-silver layer, which releases silver ions that have a certain killing effect on bacteria, fungi, and viruses, preventing the growth and spread of microorganisms inside the nozzle 7 and / or the port 2. Furthermore, the nano-silver layer has good conductivity; when the nozzle 7 and / or the port 2 comes into contact with the human body, it can guide the static electricity generated during the use of the device to the ground through the human body, achieving the function of static electricity removal and avoiding the impact of electrostatic adsorption on the drug delivery process.

[0097] See Figures 3 to 5 As shown, in some embodiments, a dustproof sheet 10 is provided inside the nozzle 7; in the initial state, the dustproof sheet 10 is closed and blocks the nozzle 7, thereby achieving a dustproof effect and preventing the flow channel inside the housing 1 from being contaminated. When the user outputs the first fluid through the nozzle 7, the dustproof sheet 10 is passively opened by the pressure of the first fluid, thereby fulfilling the auxiliary function of normal blowing.

[0098] For example, see Figure 10 In this application, the dustproof sheet 10 is generally made of an elastic material, such as silicone, elastic plastic, etc. The dustproof sheet 10 matches the inner contour of the nozzle 7, and a cross or straight dividing line is provided in its center to divide the dustproof sheet 10 into multiple independent parts. When the user outputs the first fluid through the nozzle 7, each independent part is bent by the airflow and allowed to pass through. After the blowing force is removed, each independent part returns to its original position and reassembles into a complete dustproof sheet 10, achieving the dustproof function.

[0099] It should be noted that the dustproof sheet can be installed alone in the blowhole 7 to achieve dust prevention, or it can be used together with the valve unit 6 to cut off the flow channel for dust prevention, thus achieving a dual dust prevention effect.

[0100] See Figures 1 to 5 As shown, this utility model also discloses a method for delivering fluid to a user's nasal airway, which is applicable to the above-mentioned dual-power nasal spray and includes steps S1 to S5.

[0101] S1. Provides a dustproof nasal spray. The device includes a nozzle 2, a blow nozzle 7, a material supply unit 3, a loading unit, an actuation unit 5, and a valve unit 6.

[0102] S2. Apply a loading force to the material supply unit 3 of the dust nasal spray and lock it in the first position. Specifically, the user can apply a loading force to the material supply unit 3 by squeezing the actuation unit 5, and lock the material supply unit 3 in the first position by cooperating with the loading mechanism 4 through the valve unit 6.

[0103] S3. Place the nozzle 2 and mouthpiece 7 of the dust-proof nasal spray onto the user's nose and mouth, respectively. Specifically, the nozzle 2 can be inserted into the user's nose to a depth of not less than 2 cm to improve the seal between the nozzle 2 and the user's nose and ensure the depth of drug delivery. The mouthpiece 7 is held in the user's mouth, taking care to ensure that the mouthpiece 7 is not obstructed.

[0104] S4. The user outputs the first fluid through the nozzle 7, and the pressure of the first fluid causes the material supply unit 3 to unlock 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 will gradually separate from the locking tongue 411 on the loading mechanism 4 until the locking protrusion 64 and the locking tongue 411 are completely separated. At this time, the material supply unit 3 is unlocked from the first position.

[0105] S5. The material supply unit 3 moves to the second position and delivers the second fluid to the nasal airway through the port 2. At the same time, the first fluid flows towards the port 2 and provides constant power assistance to the second fluid. Specifically, since the actuation 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, which drives 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 opens the flow channel, causing the first fluid to flow towards the port 2 to provide constant power assistance for the delivery of the second fluid.

[0106] It should be noted that the above method adopts a press-then-blow mode. The user first applies force to the loading mechanism 4, which is locked in the first position, by squeezing the actuator. Then, by blowing in gas, the valve unit 6 simultaneously unlocks and opens the fluid. This design ensures that the blowing force of the first fluid is always constant and controllable. Compared to the conventional dual-power nasal spray's blow-then-press / blow-press synchronized mode, this method uses an air storage chamber to store air, and only outputs power assistance after the air pressure reaches a preset pressure. Furthermore, it uses blowing to unlock the restriction and synchronously deliver the medication. This method is compatible with all users, is simple to operate, and the controllable blowing force of the first fluid ensures that the medication is delivered to a nearly consistent depth into the nose each time, facilitating precise treatment.

[0107] Furthermore, before unlocking by blowing force, the material supply unit 3 has no possibility of triggering the spray regardless of whether the actuation unit 5 is operated, thus achieving the function of preventing misoperation; during this period, the valve unit 6 can also play a role in preventing dust by cutting off the flow channel, thereby improving the cleanliness and hygiene quality inside the device.

[0108] After being unlocked by blowing force, the loading force can instantly trigger the material supply unit 3, causing the pump assembly 32 to deliver the second fluid to a more distant location, thereby effectively increasing the drug delivery depth.

[0109] In some embodiments, the end of the nozzle 2 closest to the user's nose is tapered. The tapered nozzle 2 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.

[0110] In some embodiments, during steps S4 to S5, the user's soft palate is in a closed state. This avoids adverse reactions or drug degradation caused by some medication entering the esophagus through the nasal cavity, thus improving the therapeutic effect.

[0111] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A dusting nose sprayer characterized by, The utility model relates to a dustproof valve for a mouthpiece of a liquid output device, which comprises: a housing (1); a mouthpiece (7) and a nozzle (2); the mouthpiece (7) and the nozzle (2) are arranged on the housing (1) and are connected by a flow channel in the housing (1); a dustproof sheet (10) arranged in the mouthpiece (7); in an initial state, the dustproof sheet (10) closes the mouthpiece (7) to prevent air from entering the interior of the housing (1); when a user outputs a first fluid through the mouthpiece (7), the dustproof sheet (10) is passively opened by the pressure of the first fluid, and the first fluid flows to the nozzle (2).

2. The dusting nose sprayer of claim 1, wherein, The dustproof sheet (10) matches the inner contour of the mouthpiece (7), and a "cross" or "single" boundary is arranged in the middle of the mouthpiece (7) to divide the dustproof sheet (10) into multiple independent parts.

3. The dusting nose sprayer of claim 1, wherein, The dustproof sheet (10) is made of elastic silica gel or plastic.

4. The dusting nose sprayer of claim 1, wherein, The included angle between the nozzle (2) and the mouthpiece (7) is 30-70°.

5. The dusting nose sprayer of claim 1, wherein, The utility model further comprises a valve unit (6) arranged in the flow channel close to the mouthpiece (7); the dustproof sheet (10) is arranged in the mouthpiece (7) to prevent dust, or the dustproof sheet (10) cooperates with the valve unit (6) to cut off the flow channel to prevent dust.

6. The dusting nose sprayer of claim 5, wherein, The flow channel comprises a gas storage cavity (8) provided with an inlet (81) and an outlet (82); the valve unit (6) is rotatably arranged between the inlet (81) and the outlet (82) and selectively controls the opening and closing state of the outlet (82) according to the pressure of the first fluid.

7. The dusting nose sprayer of claim 6, wherein, The valve unit (6) has two deflection strokes: in the first deflection stroke, the outlet (82) is closed, the first fluid enters the gas storage cavity (8) from the inlet (81) and continuously accumulates; in the second deflection stroke, the outlet (82) is opened, and the first fluid flows from the gas storage cavity (8) to the nozzle (2).

8. The dusting nose sprayer of claim 7, wherein, One side of the inlet (81) is provided with a first arc surface (83), and two sides of the outlet (82) are respectively provided with a second arc surface (84) and a third arc surface (85); the valve unit (6) comprises 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); in the first deflection stroke, the second rotating part (62) is switched from sealing cooperation with the second arc surface (84) to a sealing critical point, and in the second deflection stroke, the second rotating part (62) is switched from the sealing critical point to a gap.

9. The dusting nose sprayer of claim 1, wherein, The inner wall of the mouthpiece (7) and / or the nozzle (2) is provided with a bacteriostatic layer, which is one of a titanium dioxide layer, an antibacterial polymer layer and an antibacterial nano coating.

10. The dusting nose sprayer of claim 5, wherein, The device further comprises a substance supply unit (3) arranged inside the housing (1) and partially extending into the nozzle (2), a loading mechanism (4) connected to the substance supply unit (3), and an actuating unit (5) in linkage with the loading mechanism (4); In the initial state, the valve unit (6) is in clamping connection with the loading mechanism (4) to lock the substance supply unit (3) in a first position; in use, the user operates the actuating unit (5) to drive the loading mechanism (4) to apply a loading force to the substance supply unit (3), and after the lock is released, the valve unit (6) is separated from the loading mechanism (4), the substance supply unit (3) moves to a second position and delivers the second fluid through the nozzle (2).

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