Nasal spray device

Abstract

The invention relates to a nasal spray device which comprises a shell, a spray assembly, a holder and a counting assembly, and the shell comprises a nose socket; the holder is used for mounting a medicine bottle containing medicine, and the movement of the holder towards the nose socket can trigger the spraying assembly to spray; the retainer is provided with a first convex part and a second convex part; the counting assembly comprises a counting screw rod and a counting indicator in threaded connection with the counting screw rod, and the counting screw rod is provided with a transmission convex part; when the retaining piece is in an initial state, the first convex part is limited on the transmission convex part so as to prevent the counting screw from rotating; and when the retaining piece moves towards the nose socket relative to the shell, the first convex part and the transmission convex part can be unlimited, and the second convex part can drive the counting screw rod to rotate towards a first preset direction through the transmission convex part. According to the linkage mode, the screw can be driven to rotate and count without direct hard contact of a middle part, a retainer and the counting screw, force transmission is achieved, the structure is simple, the inner space of the shell can be saved, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical drug delivery device technology, and in particular to a nasal spray device. Background Technology

[0002] Studies have shown that nasal administration is a non-invasive method of drug delivery that bypasses the blood-brain barrier, preventing the blockage of active drug molecules and thus reducing bioavailability and efficacy. Due to its convenience, high efficiency and non-invasiveness, it has become a research hotspot both domestically and internationally, and its application in the pharmaceutical field is becoming increasingly widespread.

[0003] Existing nasal spray devices cannot easily monitor the remaining dosage in the vial, potentially leading to false medication use. This is especially true for dual-power nasal spray devices; adding a counting function not only increases the device's structural complexity but also presents a significant challenge in coordinating the spray, airflow channel opening and closing, and counting. Summary of the Invention

[0004] To address at least one technical problem in background counting, embodiments of this application provide a nasal spray device.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions: This application provides a nasal spray device, the nasal spray device comprising: The housing, including the nose-shaped inlet; A spray assembly that enables the medicine to be sprayed through the nasal insufflation port; A retainer is used to connect the medicine bottle and move the medicine bottle; the movement of the retainer toward the nose port can trigger the spray assembly to spray; the retainer is provided with a first protrusion and a second protrusion; A counting assembly includes a counting screw and a counting indicator threaded to the counting screw. The counting indicator is capable of rotating with the counting screw and moving axially along the counting screw to count. The counting screw is provided with a transmission protrusion. When the retainer is in its initial state, the first protrusion is positioned within the transmission protrusion to impede the rotation of the counting screw; When the retainer moves relative to the housing toward the nose port, the first protrusion can be released from the limiting position of the transmission protrusion, and the second protrusion can drive the counting screw to rotate in the first preset direction through the transmission protrusion.

[0006] Optionally, when the retainer moves away from the nose socket relative to the housing, the first protrusion can drive the counting screw to rotate in a first preset direction via the transmission protrusion before the retainer is reset to its initial state.

[0007] Optionally, when the retainer moves relative to the housing toward the nose bearing, the second protrusion can continue to move to the position limited to the transmission protrusion after the counting screw has rotated a preset number of times in the first preset direction.

[0008] Optionally, the second protrusion is provided with a second counting ramp, and the counting screw includes a plurality of transmission protrusions distributed along its circumference, each of the transmission protrusions being provided with a second ramp; When the retainer is in its initial state, the first protrusion is at least partially located within the interval between two adjacent transmission protrusions, so as to be confined within the transmission protrusion; When the retainer moves relative to the housing toward the nose port, the first protrusion can disengage from the gap to release the limiting position, and the second counting ramp can move in contact with the second ramp to make the counting screw rotate in the first preset direction.

[0009] Optionally, the first protrusion is provided with a first counting ramp, and each of the transmission protrusions is also provided with a first ramp; When the retainer moves away from the nose socket relative to the housing, the first counting ramp can move in contact with the first ramp to make the counting screw rotate in a first preset direction.

[0010] Optionally, when the retainer moves toward the nose socket relative to the housing, the second protrusion can continue to move into the interval after the second counting ramp disengages from the second ramp. When the retainer moves away from the nose port relative to the housing, the first protrusion can continue to move into the interval after the first counting ramp separates from the first ramp.

[0011] Optionally, the first inclined surface and the second inclined surface are located at the upper and lower ends of the transmission protrusion, respectively.

[0012] Optionally, the first protrusion is located above the second protrusion.

[0013] Optionally, the first protrusion and the second protrusion are spaced apart.

[0014] Optionally, the nasal spray device further includes a manual trigger, which is movable relative to the housing. The movement of the manual trigger along a second preset direction can drive the retainer to move toward the nasal inlet along its axial direction.

[0015] Optionally, the housing further includes an air inlet and an airflow channel connecting the air inlet and the nose socket; The airflow blown in from the air inlet can flow through the airflow channel toward the nose receiver to assist the ejected droplets.

[0016] The embodiments of this application have at least the following technical effects: The linkage mechanism of the first protrusion, the second protrusion, and the transmission protrusion eliminates the need for intermediate components. The retainer directly contacts the counting screw to drive its rotation and achieve force transmission. This simple structure also saves internal space and reduces costs. Furthermore, when the retainer is in its initial state, the counting screw remains in place because the first protrusion is confined to the transmission protrusion. This prevents the counting screw from rotating due to movement, shaking, or dropping of the nasal spray device, thus avoiding inaccurate dosage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional view of the nasal spray device in some embodiments of this application before spraying; Figure 2 for Figure 1 Cross-sectional view of the nasal spray device during spraying; Figure 3 This is a schematic diagram of the counting component in the initial state of some embodiments of the nasal spray device of this application; Figure 4 for Figure 3 A schematic diagram of the counting component of the nasal spray device at the end of the spray; Figure 5 for Figure 3 A magnified view of the area where the counting component and the medicine bottle base meet; Figure 6 for Figure 1 A schematic diagram of the structure of the medicine bottle base in a nasal spray device; Figure 7 for Figure 1 A schematic diagram of the counting screw in the nasal spray device; Figure 8 for Figure 1 A schematic diagram of the counting indicator in a nasal spray device; Figure 9 for Figure 1 A schematic diagram of the retainer in the nasal spray device in its initial state, in conjunction with the medicine bottle; Figure 10 This is a schematic diagram of the structure of the retainer in the initial state of the nasal spray device according to some embodiments of this application, in which the retainer engages with the medicine bottle; wherein the retainer has an elliptical cylindrical boss.

[0019] Explanation of reference numerals in the attached figures: 1. Housing; 100. Airflow channel; 2. Mouth holder; 22. Air outlet; 23. Mouth holder channel; 3. Nose holder; 31. Nose holder opening; 4. Valve assembly; 41. Valve core; 42. Valve switch; 43. Valve connecting rod; 5. Nozzle; 512. Shoulder; 6. Left housing; 61. Counting window; 611. Upper limit surface; 612. Lower limit surface; 62. Support platform; 63. Screw fixing position; 68. Thumb position; 69. Limiting structure; 7. Right housing; 74. External dustproof platform; 75. Internal dustproof platform; 8. Manual trigger; 81. Finger placement part; 82. Hook; 83. First trigger ramp; 10. Counting assembly ; 101, Counting screw; 1011, External thread; 1012, First inclined surface; 1013, Second inclined surface; 1014, Transmission protrusion; 102, Counting indicator; 1021, Indicating boss; 11, Retaining member; 111, Medicine bottle cap; 151, Protrusion; 1151, Second triggering inclined surface; 112, Medicine bottle; 113, Medicine bottle base; 1132, First counting inclined surface; 1133, Second counting inclined surface; 1134, First protrusion; 1135, Second protrusion; 1136, First retaining surface; 1137, Second retaining surface; 114, Pump assembly; 1141, Metering valve; 1142, Suction tube. Detailed Implementation

[0020] To make the technical solution and beneficial effects of the present invention more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0021] In the description of this invention, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limiting this invention.

[0022] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature defined as "first" or "second" can explicitly include at least one of those features. In the description of this invention, "a plurality of" means at least two, such as two, three, etc.

[0023] In this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] See Figure 1 and Figure 2 This application provides a nasal spray device, which includes a housing 1, a spray assembly, a retainer 11, and a counting assembly 10. The housing 1 has a nose support 3 formed at its top, and the nose support 3 has a nose inlet 31. The spray assembly allows the medication to be sprayed through the nose inlet 31. The retainer 11 connects to a medicine bottle 112 containing the medication and moves the medicine bottle 112 up and down; that is, the medicine bottle 112 moves up and down with the movement of the retainer 11. The movement of the retainer 11 toward the nose inlet 31 triggers the spray assembly to spray.

[0025] The retainer 11 includes a bottle cap 111 and a bottle base 113. See the embodiment illustrated in this application. Figure 1 and Figure 9 The medicine bottle cap 111 is fitted over the medicine bottle 112, and the medicine bottle base 113 is formed into a cylindrical shape with an open top. The medicine bottle 112 is partially located inside the medicine bottle base 113. This is an example illustrating the connection relationship between the medicine bottle 112 and the retainer 11. The method by which the retainer 11 drives the medicine bottle 112 to move up and down synchronously is not intended to limit this application.

[0026] See Figures 3 to 6 The retainer 11 has a first protrusion 1134 and a second protrusion 1135; the counting assembly 10 includes a counting screw 101 and a counting indicator 102 threadedly connected to the counting screw 101. The counting indicator 102 can move axially along the counting screw 101 as the counting screw 101 rotates to count. The counting screw 101 has a transmission protrusion 1014. When the retainer 11 is in its initial state, see [reference needed]. Figure 3The first protrusion 1134 is limited to the transmission protrusion 1014 to prevent the counting screw 101 from rotating. When the retainer 11 moves relative to the housing 1 toward the nose port 31, the first protrusion 1134 can be released from the transmission protrusion 1014, and the second protrusion 1135 can drive the counting screw 101 to rotate in the first preset direction through the transmission protrusion 1014.

[0027] The linkage between the first protrusion 1134, the second protrusion 1135, and the transmission protrusion 1014 eliminates the need for intermediate components. The retainer 11 can drive the screw to rotate and count by direct hard contact with the counting screw 101, thus achieving force transmission. The structure is simple and also helps to save internal space of the housing 1 and reduce costs.

[0028] When the retainer 11 is in the initial state, since the first protrusion 1134 is limited to the transmission protrusion 1014, the counting screw 101 can remain in the original position and will not rotate due to the movement, shaking or falling of the nasal spray device, resulting in inaccurate dosage.

[0029] The nasal spray device may also include a manual trigger 8, which is movable relative to the housing 1. The movement of the manual trigger 8 can cause the retainer 11 to move toward the nasal socket 31.

[0030] "Initial state" can be understood as: the button is not pressed, the nasal spray device is not used, and the retainer 11 is stationary relative to the housing 1.

[0031] See Figure 7 The outer wall of the counting screw 101101 is provided with an external thread 1011, see [reference]. Figure 8 The inner wall of the cylindrical body of the counting indicator 102102 is provided with a single-turn internal thread.

[0032] At least the second protrusion 1135 has a counting ramp, and the transmission protrusion 1014 has a transmission ramp. When the retainer 11 moves, the counting ramp can move in contact with the transmission ramp so that the counting screw 101 rotates about its axis.

[0033] After pressing the button, the retainer 11 moves upward relative to the housing 1 toward the nose port 31. As the retainer 11 moves, the first protrusion 1134 disengages from the limiting position on the transmission protrusion 1014, making the counting screw 101 rotatable. When the second protrusion 1135 moves to abut against the transmission protrusion 1014, the counting inclined surface of the second protrusion 1135 moves in contact with the transmission inclined surface, pushing the counting screw 101 to rotate and start counting. At this time, the device is also in spray mode.

[0034] In some alternative embodiments, when the retainer 11 moves away from the nose port 31 relative to the housing 1, the first protrusion 1134 can drive the counting screw 101 to rotate in a first preset direction via the transmission protrusion 1014 before the retainer 11 returns to its initial state. That is, during the downward resetting process of the retainer 11, the transmission protrusion 1014 can still drive the counting screw 101 to rotate, and the counting indicator 102 will still count. Thus, the dose change caused by a single spray is achieved through two stages of counting: one stage is the counting during the upward movement of the retainer 11 in the spray state, and the other stage is the counting during the downward resetting process of the retainer 11. In these two stages, the sum of the axial changes of the counting indicator 102 along the counting screw 101 matches the dose of a single spray. This counting method fully utilizes the driving force of the retainer 11 during its downward movement to drive the counting screw 101 to rotate, shortening the unidirectional stroke of the retainer 11 (especially the upward movement stroke), effectively reducing the difficulty for the user to apply external force to drive the retainer 11 upward via a button. Moreover, this method also makes the device structure more compact.

[0035] The first preset direction can be either clockwise or counterclockwise.

[0036] Combination Figure 3 , Figure 7 and Figure 8 As shown, the counting indicator 102 is sleeved on the outside of the counting screw 101 by a cylindrical body. The outer wall of the counting screw 101 has an external thread 1011, and the inner wall of the cylindrical body of the counting indicator 102 has a single-turn internal thread. The housing 1 includes a left housing 6 and a right housing 7, which are assembled to form a space for accommodating components such as the counting assembly 10, valve assembly, pump assembly 114, nozzle 5, and medicine bottle 112. The nose support 3 is located on the left housing 6, and the button is located on the right housing 7. The bottom of the left housing 6 has a roughly cylindrical support platform 62, and a screw fixing position 63 is located above the support platform 62. The lower end of the counting screw 10 is inserted into the support platform 62, and the upper end is engaged with the screw fixing position 63. The counting indicator 102 is inserted from the upper end of the counting screw 101 and engaged with the thread on the outer wall of the counting screw 101. The indicating boss 1021 is inserted into the counting window 61 of the left housing 6. The counting screw 101 and the counting indicator 102 are connected by threads. When viewed from above the nose bearing 3, the counting screw 101 rotates clockwise and the counting indicator 102 moves downward.

[0037] See Figure 1 The indicator boss 1021 can be limited between the upper limit surface 611 and the lower limit surface 612 to prevent the counting indicator 102 from disengaging from the counting screw 101.

[0038] In some alternative embodiments, when the retainer 11 moves relative to the housing 1 toward the nose socket 31, see [reference needed]. Figure 4The second protrusion 1135 can continue to move to the position limited by the transmission protrusion 1014 after the counting screw 101 has rotated a preset number of times in a preset first direction. Based on the above, as the retaining member 11 continues to move upward, the counting ramp of the second protrusion 1135 gradually disengages from the transmission ramp of the transmission protrusion 1014. The second protrusion 1135 can no longer drive the counting screw 101 to rotate, but it will be in a position that limits the rotation of the counting screw 101. At this time, the button is still pressed, the retaining member 11 rises to its highest position, and the retaining member 11 is stationary relative to the housing 1. The limiting effect of the second protrusion 1135 ensures that the counting screw 101 remains in its original position and will not rotate due to movement, shaking, or dropping of the nasal spray device, thus ensuring the accuracy of the dosage.

[0039] In some alternative embodiments, for ease of description, the counting ramp of the second protrusion 1135 is referred to as the second counting ramp 1133. The counting screw 101 includes a plurality of transmission protrusions 1014 distributed circumferentially thereon, each transmission protrusion 1014 having a second ramp 1013. When the retainer 11 is in the initial state, see [reference needed]. Figure 3 The first protrusion 1134 is at least partially located within the gap between two adjacent transmission protrusions 1014 to limit its position within the transmission protrusion 1014; when the retainer 11 moves relative to the housing 1 toward the nose port 31, the first protrusion 1134 can disengage from the gap to release the limiting position, and the second counting ramp 1133 can move in contact with the second ramp 1013 to make the counting screw 101 rotate toward the first preset direction.

[0040] See also Figure 3 When the retainer 11 is in its initial state, the first protrusion 1134 is partially located within the gap between two adjacent transmission protrusions 1014. Since the retainer 11 cannot rotate relative to the housing 1, the retainer 11 can restrict the rotation of the counting screw 101 through the first protrusion 1134. After pressing the button, the rise of the retainer 11 causes the first protrusion 1134 to disengage from the gap, and the second protrusion 1135 rises to abut against the second inclined surface 1013, thereby pushing the counting screw 101 to rotate.

[0041] In some optional embodiments, the first protrusion 1134 is also provided with a counting ramp, referred to as the first counting ramp 1132, and each transmission protrusion 1014 is also provided with a first ramp 1012; when the retainer 11 moves away from the nose bearing 31 relative to the housing 1, the first counting ramp 1132 can move in contact with the first ramp 1012 to make the counting screw 101 rotate in the first preset direction. During the subsequent descent and reset process of the retainer 11 (i.e., the retainer 11 moves away from the nose bearing 31 relative to the housing 1), after the first protrusion 1134 disengages from the first ramp 1132 and the first ramp 1012, it can continue to move into the interval, at which time the retainer 11 resets to its original position. Figure 3The initial state is shown.

[0042] The cooperation between the first counting ramp 1132 and the first ramp 1012 is used to drive the screw to rotate during the descent of the retainer 11. In conjunction with the foregoing description, when the retainer 11 moves relative to the housing 1, the first protrusion 1134 or the second protrusion 1135 can drive the counting screw 101 to rotate. Specifically: during the upward movement of the retainer 11, the counting screw 101 is driven by the second protrusion 1135; during the downward resetting movement of the retainer 11, the counting screw 101 is driven by the first protrusion 1134. When the retainer 11 is stationary relative to the housing 1, the first protrusion 1134 or the second protrusion 1135 can restrict the rotation of the counting screw 101. Therefore, the first protrusion 1134 and the second protrusion 1135 can achieve both driving and limiting functions at different stages, providing multiple functions from a single component, further reducing the number of parts in the device, improving the device's compactness, and lowering costs.

[0043] In some alternative embodiments, the first protrusion 1134 is located above the second protrusion 1135.

[0044] In some alternative embodiments, the first inclined surface 1012 and the second inclined surface 1013 are located at the upper and lower ends of the transmission protrusion 1014, respectively.

[0045] The nasal spray device in this application embodiment can be a dual-power nasal spray device or a single-power spray device that does not have airflow-assisted spraying and relies on the pump assembly 114 for spraying.

[0046] The following explanation uses a dual-power nasal spray device as an example.

[0047] In some optional embodiments, the housing 1 also includes an air inlet 22 and an airflow channel 100 connecting the air inlet 22 and the nasal inlet 31; the airflow blown in from the air inlet 22 can flow through the airflow channel 100 toward the nasal inlet 31 to provide assistance to the sprayed droplets, helping to carry the liquid medicine into the olfactory and respiratory areas of the nasal cavity as much as possible, and the gas blown out of the mouth can provide shear force to assist in the atomization of the liquid medicine, thereby making the liquid medicine atomized more thoroughly, obtaining smaller particle size, and better effect.

[0048] In some alternative embodiments, the first protrusion 1134 and the second protrusion 1135 are spaced apart.

[0049] The first protrusion 1134 and the second protrusion 1135, which are spaced apart, can be used in scenarios where the button is pressed and the retainer 11 rises a certain distance before spraying.

[0050] For example, the spray device includes a nozzle 5 and a pump assembly 114 mounted on a medicine bottle 112. A retainer 11 can move the medicine bottle 112 and the pump assembly 114 toward the nasal inlet 31. The nozzle 5 has a spray channel leading to the nasal inlet 31, through which the medicine is sprayed into the nasal cavity. The pump assembly 114 and the nozzle 5 work together to achieve the spraying. For example, see... Figure 1 and Figure 2 The housing 1 also includes a limiting structure 69. When the nozzle 5 moves toward the nose socket 31 to the limiting structure 69, the limiting structure 69 prevents the nozzle 5 from moving further. The retaining member 11 can continue to drive the pump assembly 114 to move relative to the nozzle 5 toward the nose socket 31, thereby activating the pump assembly 114 and triggering it to spray the medicine. The medicine sprayed by the pump assembly 114 is ejected from the nose socket 31 through the spray channel. After spraying is completed, the pump assembly 114 can draw the medicine needed for the next spray from the medicine bottle 112.

[0051] As can be seen from the foregoing description, the distance between the first protrusion 1134 and the second protrusion 1135 is related to the upper and lower limit positions of the retainer 11 moving along its axial direction, that is, it is related to the entire stroke of the retainer 11 moving along its axial direction.

[0052] The limiting structure 69 can be a limiting platform protruding from the inner wall of the housing 1.

[0053] During the upward movement of the retainer 11, the nozzle 5 also shifts towards the nasal inlet 31 by approximately 0.5 to 3 mm. This allows the atomization point of the medication to penetrate further into the nasal cavity, delivering the medication more deeply. Simultaneously, it prevents the atomized medication from adhering to the inner wall of the nasal inlet, thus avoiding contamination and waste. After the upward movement, the nozzle 5 will not come into contact with the patient's nasal cavity, and the patient will not perceive this, thus avoiding any discomfort.

[0054] For the dual-power nasal spray device, the device also includes a valve assembly 4, which is used to open or close the airflow channel 100. The movement of the retainer 11 or the nozzle 5 can move the valve assembly 4 to the open position, and the movement of the retainer 11 can drive the counting screw 101 to rotate. That is to say, during the upward movement of the retainer 11, not only can spraying be achieved, but the nozzle 5, valve assembly 4, and counting screw 101 can also be linked. This linkage method can not only simplify the operation of the nasal spray device and improve the user experience, but also effectively ensure the coordination of multiple actions such as spraying, airflow assistance, and counting.

[0055] When the valve assembly 4 is limited by the limiting structure 69 on the protruding shoulder 512 on the nozzle 5, it can open the airflow channel 100 to the maximum extent.

[0056] In some embodiments, see Figure 1The valve assembly 4 includes a valve core 41, a valve switch 42, and a valve connecting rod 43. The valve core 41 includes an elastic diaphragm with a slit. The elasticity of the diaphragm closes the slit, thus closing the airflow channel 100. The valve connecting rod 43 is rotatably connected at both ends to the valve switch 42 and the nozzle 5, respectively. When the nasal spray device is in its initial state, the valve switch 42 is tightly fitted with the valve core 41, the valve boss is tightly fitted with the slit, and the valve boss abuts against the valve, thus the valve assembly 4 is in a closed state, preventing airflow.

[0057] When using the product, first hold the mouthpiece 2 in your mouth and blow air into it. At this time, the valve assembly 4 is not open, and the gas is stored in the mouthpiece channel 23. After pressing the button, the button moves the medicine bottle 112 upward. The nozzle 5 drives the valve switch 42 to disengage from the valve core 41 through the valve connecting rod 43. High-pressure airflow is present in the mouthpiece 2. The valve loses the support of the valve boss and begins to deform towards the low-pressure side, which increases the gap. The airflow can then pass through the valve core 41, enter the airflow channel 100, and then pass through the nosepiece and enter the nasal cavity.

[0058] The counting process is described in more detail below: See Figure 3 Before the button is pressed, the first protrusion 1134 is located between the two transmission protrusions 1014. At this time, the first holding surface 1136 of the first protrusion 1134 is close to the transmission boss, so that the counting screw 101 remains in the original position.

[0059] When the button is pressed, the retaining member 11 (specifically, the medicine bottle base 113, which will be further described below) moves upward. After the first protrusion 1134 disengages from the transmission boss, the counting screw 101 can rotate. As the retaining member 11 continues to move upward, the second counting ramp 1133 engages with the second ramp 1013. The second counting ramp 1133 continues to move upward, pushing the transmission protrusion 1014 to rotate clockwise until the second retaining surface 1137 of the second protrusion 1135 engages with the transmission boss. When the retaining member 11 reaches the second position (which can be understood as the highest position that the retaining member 11 can reach), the second protrusion 1135 is located between the two transmission protrusions 1014, and the counting screw 101 cannot rotate.

[0060] After the button is released, the retainer 11 moves downward, causing the medicine bottle 112 and pump assembly 114 to reset. The second retaining surface 1137 of the second protrusion 1135 gradually disengages from the transmission protrusion 1014, allowing the counting screw 101 to rotate. The first counting surface engages with the first inclined surface 1012, pushing the transmission protrusion 1014 to rotate clockwise until the first protrusion 1134 is positioned between the two transmission protrusions 1014. The first retaining surface 1136 of the first protrusion 1134 engages with the transmission protrusion 1014, restricting the rotation of the counting screw 101 and ensuring the accuracy of the dosage indicator.

[0061] The driving structure of medicine bottle 112 will be further explained below.

[0062] The manual trigger 8 is movable relative to the housing 1. The movement of the manual trigger 8 in the second preset direction can drive the retaining member 11 to move toward the nose socket 31 in its axial direction.

[0063] In this application, the medicine bottle 112, the retainer 11, the nozzle 5 and the pump assembly 114 are substantially coaxial, and the upward or downward movement of the retainer 11 refers to the movement approximately along its axial direction.

[0064] The axis of the counting screw 101 is approximately parallel to the axis of the retainer 11.

[0065] The second preset direction is roughly parallel to the horizontal plane.

[0066] The manual trigger 8 is used to trigger the retainer 11 to move toward the nose socket 31. See also Figure 1 and Figure 2 The manual trigger 8 is installed on the housing 1 and includes multiple finger placement parts 81. The housing body has a thumb position 68 on the opposite side of the manual trigger 8, so that the other four or three fingers can press the manual trigger 8. With the five fingers working together, the structural design is more ergonomic and the pressing is less strenuous.

[0067] See Figure 9 In some optional embodiments, the manual trigger 8 has a first trigger ramp 83 and the retainer 11 has a second trigger ramp 1151. Under the action of an external force in a second preset direction, the manual trigger 8 can slide by the first trigger ramp 83 against the second trigger ramp 1151, so that the retainer 11 moves toward the nose socket 31 along its axial direction.

[0068] The vial 112 and the retainer 11 together form a vial assembly. Figure 9 This is a schematic diagram of the structure of the medicine bottle assembly before the medicine bottle 112 is activated, that is, before the button is pressed, which can also be understood as the device being in its initial state.

[0069] The structure of the first trigger ramp 83 and the second trigger ramp 1151 being attached and sliding relative to each other can convert the axial movement of the retaining member 11 into the lateral horizontal movement of the button, that is, the movement direction of the manual trigger member 8 is perpendicular to the axis of the nose bearing 31. This linkage method of changing the force direction through direct hard contact has a simple structure, fewer parts, and helps to reduce costs.

[0070] See Figure 10In another implementation, the manual trigger 18 has a first trigger ramp 83, and the retainer 11 is located on the curved surface 1611, with the first trigger ramp 83 in line contact with the curved surface 1611. Here, the curved surface 1611 can be the elliptical circumference of the approximately elliptical cylindrical boss 161 protruding from the sidewall of the retainer 11. Relative to... Figure 9 Regarding the surface contact method where the first triggering inclined surface 83 and the second triggering inclined surface 1151 are in contact... Figure 10 This line contact method requires less effort and makes it easier to push the retaining component 11 upward.

[0071] In some embodiments not illustrated in this application, the curved surface may also be disposed on the manual trigger 18, and the first trigger ramp that fits against the curved surface may be disposed on the retainer 11.

[0072] Moreover, compared with rotation and other movement methods, the horizontal movement of the button towards the bearing 2 in this embodiment of the application is more in line with the patient's usage habits and can improve the user experience.

[0073] See Figure 9 The retainer 11 includes two parts: a bottle cap 111 and a bottle base 113. In the initial state, under the influence of the weight of the bottle 112 itself, the first triggering slope 83 and the second triggering slope 1151 can fit tightly together.

[0074] See Figure 1 The housing 1 includes a left housing 6 and a right housing 7, which are assembled to form a space for accommodating components such as medicine bottle 112, counting assembly 10, and valve assembly 4.

[0075] After the button is released, the retainer 11 can move downwards to reset under the weight of the medicine bottle 112 and the retainer 11.

[0076] The bottle cap 111 and the bottle base 113 are each provided with at least one protrusion 151, and each protrusion 151 is provided with a second triggering ramp 1151. The manual trigger 8 is also provided with a hook 82 and multiple first triggering ramps 83. The hook 82 is engaged with the inner wall of the right shell 7 to prevent the manual trigger 8 from dislodging from the right shell 7. In use, the thumb presses the thumb position 68 of the left shell 6, and the other four or three fingers press the multiple finger placement parts 81 on the manual trigger 8, causing the manual trigger 8 to move horizontally inward. The bottle 112 and the retainer 11 are constrained by the left shell 6 and the right shell 7 and cannot move horizontally, but can only move vertically. Under the action of the first triggering ramp 83 and the corresponding second triggering ramp 1151, the horizontal movement of the button is converted into the up and down movement of the bottle assembly composed of the bottle 112 and the retainer 11.

[0077] The nozzle 5 moves upward synchronously with the medicine bottle assembly. After about 0.5~3mm, the protruding platform on the nozzle 5 contacts the nozzle limiting platform inside the housing 1, and the nozzle 5 can no longer move upward. However, the medicine bottle assembly continues to move upward, squeezing the pump assembly 114, causing the buffered medicine to be squeezed. Because there is a one-way valve at the bottom of the pump assembly 114, the medicine can only flow upward, through the nozzle assembly, and be sprayed out from the swirling chamber (i.e., the spray channel) on the nozzle 5 to form atomized droplets.

[0078] In addition, the right shell 7 is provided with an external dustproof platform 74 and an internal dustproof platform 75. Before the button is pressed, the external dustproof platform 74 blocks dust from entering the device; after the button is pressed, the internal dustproof platform 75 blocks dust from entering the device from the bottom.

[0079] Regarding pump assembly 114: Pump assembly 114 may be any existing pump assembly 114, and its specific structure is not intended to limit this application. For ease of understanding, pump assembly 114 is briefly described below. Pump assembly 114 includes a suction tube 1142, a metering valve 1141, and a check valve. Under the action of the check valve, the suction tube 1142 can only draw the liquid medicine in the medicine bottle 112 into the metering valve 1141, and will not flow back from the metering valve 1141 into the medicine bottle 112. When pump assembly 114 moves upward relative to nozzle 5, the spring of metering valve 1141 is compressed, and the liquid medicine in metering valve 1141 is compressed into the vortex chamber of nozzle 5. The inner wall of the vortex chamber is a vortex groove. According to the principle of vortex atomization, the liquid medicine moves radially outward under the action of centrifugal force, and extends into a liquid film on the rotating surface of the vortex groove. Centrifugal force overcomes the surface tension and viscosity of the liquid, causing the liquid film to continuously thin, and detach from the surface at the rotating edge to form a filamentous or ribbon-like structure. High-speed airflow or ambient gas interacts with the liquid filaments and liquid bands, further breaking them down into micron-sized droplets through gas-liquid shear forces. When the button is released, the spring resets the metering valve 1141, and simultaneously, the suction tube 1142 draws the required liquid for the next spray from the medicine bottle 112. This cycle repeats continuously.

[0080] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0081] In the description of this specification, references to "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A nasal spray device, characterized in that, The nasal spray device includes: The housing, including the nose-shaped inlet; A spray assembly that enables the medicine to be sprayed through the nasal insufflation port; A retainer is used to connect the medicine bottle and move the medicine bottle; the movement of the retainer toward the nose port can trigger the spray assembly to spray; the retainer is provided with a first protrusion and a second protrusion; A counting assembly includes a counting screw and a counting indicator threaded to the counting screw. The counting indicator is capable of rotating with the counting screw and moving axially along the counting screw to count. The counting screw is provided with a transmission protrusion. When the retainer is in its initial state, the first protrusion is positioned within the transmission protrusion to impede the rotation of the counting screw; When the retainer moves relative to the housing toward the nose port, the first protrusion can be released from the limiting position of the transmission protrusion, and the second protrusion can drive the counting screw to rotate in the first preset direction through the transmission protrusion.

2. The nasal spray device according to claim 1, characterized in that, When the retainer moves away from the nose socket relative to the housing, the first protrusion can drive the counting screw to rotate in a first preset direction via the transmission protrusion before the retainer is reset to its initial state.

3. The nasal spray device according to claim 1, characterized in that, When the retainer moves relative to the housing toward the nose port, the second protrusion can continue to move to the position limited to the transmission protrusion after the counting screw has rotated a preset number of times in the first preset direction.

4. The nasal spray device according to any one of claims 1 to 3, characterized in that, The second protrusion is provided with a second counting slope, and the counting screw includes a plurality of transmission protrusions distributed along its circumference, each of the transmission protrusions being provided with a second slope; When the retainer is in its initial state, the first protrusion is at least partially located within the interval between two adjacent transmission protrusions, so as to be confined within the transmission protrusion; When the retainer moves relative to the housing toward the nose port, the first protrusion can disengage from the gap to release the limiting position, and the second counting ramp can move in contact with the second ramp to make the counting screw rotate in the first preset direction.

5. The nasal spray device according to claim 4, characterized in that, The first protrusion is provided with a first counting slope, and each of the transmission protrusions is also provided with a first slope; When the retainer moves away from the nose socket relative to the housing, the first counting ramp can move in contact with the first ramp to make the counting screw rotate in a first preset direction.

6. The nasal spray device according to claim 5, characterized in that, When the retainer moves toward the nose port relative to the housing, the second protrusion can continue to move into the interval after the second counting ramp disengages from the second ramp. When the retainer moves away from the nose port relative to the housing, the first protrusion can continue to move into the interval after the first counting ramp separates from the first ramp.

7. The nasal spray device according to claim 5, characterized in that, The first inclined surface and the second inclined surface are located at the upper and lower ends of the transmission protrusion, respectively.

8. The nasal spray device according to claim 1, characterized in that, The first protrusion is located above the second protrusion.

9. The nasal spray device according to claim 8, characterized in that, The first protrusion and the second protrusion are spaced apart.

10. The nasal spray device according to claim 1, characterized in that, The nasal spray device also includes a manual trigger, which is movable relative to the housing. The movement of the manual trigger along a second preset direction can drive the retainer to move toward the nasal inlet along its axial direction.

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