Multi-dose quantitative nasal spray device

Abstract

The invention discloses a multi-dose quantitative nasal spray device which comprises a shell assembly, a nozzle assembly, a liquid storage assembly, a quantitative propelling assembly and a counting assembly. The shell assembly is provided with a main body shell, a button and a nose pad; the nozzle assembly comprises a fixed needle tube and a needle tube sleeve; the liquid storage assembly comprises a medicine bottle and a sealing piston; the quantitative propelling assembly is meshed with a sliding pawl and an anti-retreating pawl of the counting assembly through an inclined face clamping groove in the surface of the bottle sleeve, and quantitative propelling is achieved. The counting assembly is provided with a counting disc which is matched with the bottle sleeve and the counting sealing cover through an inner ring tooth face and an outer ring tooth face respectively, and the counting disc is driven to rotate to display the remaining dose during pressing and resetting. Precise quantitative administration is achieved through a mechanical linkage structure, a plurality of standard doses can be stored, a mistaken touch prevention structure and a real-time dose counting function are achieved, the problems that an existing nasal spray device is small in capacity and does not have metering display, and pre-injection is needed are solved, and medication convenience and safety are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a multi-dose quantitative nasal spray device. Background Art

[0002] Nasal administration is different from oral and parenteral administration. This method is usually used to treat nasal diseases or relieve migraine symptoms. Since nasal administration does not require passing through the gastrointestinal tract, it avoids the first-pass effect of oral drugs. The drug can directly enter the blood circulation system, thereby improving the drug's absorption and bioavailability. The nasal spray device delivers the drug in the form of a liquid spray, and the drug can directly contact the nasal mucosa, providing a more efficient therapeutic effect.

[0003] The common nasal spray devices on the market still have the following defects: There are currently two types of nasal spray devices on the market, one is single-dose and double-dose nasal sprays and the other is large-dose bottle-type nasal spray devices. Most patients need to take medication multiple times a day. The former needs to carry multiple devices a day, and the latter does not have a dose counting function, making it impossible to know the remaining amount of medicine. Summary of the Invention

[0004] The object of the present invention is to provide a multi-dose quantitative nasal spray device to solve the problems existing in the above-mentioned prior art.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A multi-dose quantitative nasal spray device, comprising:

[0007] A housing assembly, comprising a main housing, a button, a button cover, a pressing spring, and a nose pad;

[0008] A nozzle assembly, the nozzle assembly comprising a needle tube and a needle tube sleeve, wherein the needle tube sleeve is disposed in the needle tube sleeve;

[0009] A liquid storage assembly is located inside the main body shell, the liquid storage assembly includes a medicine bottle and a sealing piston, and the needle sleeve is set in the medicine bottle;

[0010] A quantitative advancement assembly, the quantitative advancement assembly is located outside the liquid storage assembly, the quantitative advancement assembly includes a bottle sleeve and a counting cap, the medicine bottle sleeve is arranged in the bottle sleeve, the surface of the bottle sleeve is provided with a continuous inclined groove, and the counting cap is located outside the bottle sleeve;

[0011] A counting assembly comprises a counting spring, a counting disk, a sliding pawl and an anti-backward pawl.

[0012] By adopting the above technical solution, the counting component allows the patient to observe the remaining amount of medicine in the device at any time. The interaction between the inclined slot on the outside of the bottle sleeve and the sliding pawl and the anti-backoff pawl ensures that the amount of medicine fed each time is roughly the same.

[0013] In a further embodiment, the sliding pawl is provided with an anti-accidental-touch structure for first use. The anti-accidental-touch structure is a breakable connection portion provided on the outside of the sliding pawl, which requires a force exceeding the normal operating pressure to break when pressed for the first time.

[0014] In a further embodiment, the single advancement distance of the quantitative advancement assembly is determined by the pitch of the inclined slots of the bottle holder, and the pitch of a single slot corresponds to the volume of a fixed single dose of medicine that can be released.

[0015] In a further embodiment, the sliding pawl is provided with a plurality of arm structures leaning toward the bottle sleeve, and the sliding pawl generates elastic deformation during the resetting process and automatically engages with the next inclined slot position of the bottle sleeve.

[0016] By adopting the above technical solution, greater pressure is required for the first use. In the event of mis-triggering of the device during transportation or storage, the cooperation between the sliding pawl and the inclined slot ensures that the advancement distance is consistent each time, and no pre-spray is required, which will not cause drug waste.

[0017] In a further embodiment, the medicine bottle is sealed with a sealing piston, and when the medicine bottle is pushed in, the needle pierces the sealing piston to form a medicine channel.

[0018] In a further embodiment, the counting disk is provided with display numbers 0-N along the outer cylindrical surface, N is the maximum dose of the medicine stored in the medicine bottle, and the display numbers are aligned with the digital display holes on the main shell to display the remaining dose.

[0019] By adopting the above technical solution, the patient can simply and clearly observe how much medicine is left in the device.

[0020] In a further embodiment, the bottle holder can accommodate a bottle of medicine that can be used for at least 8 standard doses.

[0021] By adopting the above technical solution, patients do not need to carry multiple nasal spray devices when they need to take medicine multiple times a day, which improves convenience.

[0022] In a further embodiment, the sliding pawl 53 will push the bottle sleeve 41 a further distance when the device is used for the first time, so as to fill the internal space of the device when the device is used for the first time.

[0023] By adopting the above solution, the dosage of the first injection is substantially consistent with the dosage of subsequent injections.

[0024] In a further embodiment, when the counting disk is pressed, the inclined protrusion of the bottle sleeve pushes the inner ring inclined surface of the counting disk to rotate at a first angle, and when the counting disk is reset, the inclined surface of the counting cover cooperates with the outer ring inclined surface of the counting disk to rotate at a second angle.

[0025] In a further embodiment, the counting spring and the pressing spring together constitute a bidirectional reset mechanism, which respectively drives the counting disk and the button to return to the initial position.

[0026] In a further embodiment, the counting disk is provided with an inner ring tooth surface and an outer ring tooth surface, the sliding pawl and the anti-backoff pawl are engaged with the card slot of the bottle sleeve at the same time, the inner ring tooth surface of the counting disk cooperates with the sliding pawl, and the outer ring tooth surface cooperates with the counting cover, and the inner ring tooth surface and the outer ring tooth surface of the counting disk are staggered.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. The sliding pawl and anti-retraction pawl are arranged in conjunction with the outer bevel slot of the bottle sleeve, ensuring that the amount of medicine delivered each time the device is pressed is consistent. Furthermore, during first use, the sliding pawl pushes the bottle sleeve a greater distance to fill the internal space of the device. This ensures that the dose delivered by the first injection is essentially the same as that delivered by subsequent injections, eliminating the need for pre-injection and wasting of liquid medicine.

[0029] 2. The multi-dose setting of the bottle sleeve can increase the storage capacity, reduce the frequency of patient replacement and enhance portability;

[0030] 3. Through the setting of the counting component, the patient can monitor the amount of medicine in the device in real time to prevent the situation where there is no medicine available;

[0031] 4. The provision of a breakable connection portion on the outside of the sliding pawl can prevent accidental touch during transportation and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of the overall structure of a multi-dose metered-dose nasal spray device according to a preferred embodiment of the present invention;

[0033] Figure 2 is a vertical cross-sectional view of the internal structure of a multi-dose metered-dose nasal spray device according to a preferred embodiment of the present invention;

[0034] Figure 3 This is an exploded view of the overall structure of a multi-dose metered nasal spray device according to a preferred embodiment of the present invention;

[0035] Figure 4 is a structural cross-sectional view of the starting position of some components according to a preferred embodiment of the present invention;

[0036] Figure 5 is a cross-sectional view of the structure of a portion of components at an intermediate position according to a preferred embodiment of the present invention;

[0037] Figure 6 This is a cross-sectional view of the end position structure of some components according to a preferred embodiment of the present invention;

[0038] Figure 7 This is a cross-sectional view of the starting position structure of a portion of a counting assembly according to a preferred embodiment of the present invention;

[0039] Figure 8 This is a cross-sectional view of the terminal position structure of a portion of a counting assembly according to a preferred embodiment of the present invention;

[0040] Figure 9 This is a partial enlarged view of the anti-accidental touch structure of the present invention

[0041] Figure 10 is a diagram showing the starting position of the initial count display of the overall device according to the present invention;

[0042] Figure 11 This is a diagram showing the end position of the count display after one dose has been used in the overall device of the present invention;

[0043] In the figure, 1. Shell assembly; 12. Main shell; 13. Button; 14. Button cover; 15. Press spring; 16. Nose pad; 2. Nozzle assembly; 21. Needle; 22. Needle sleeve; 3. Liquid storage assembly; 31. Medicine bottle; 32. Sealing piston; 4. Dosing propulsion assembly; 41. Bottle sleeve; 42. Counting cover; 5. Counting assembly; 51. Counting spring; 52. Counting disk; 53. Sliding pawl; 54. Anti-retraction pawl; 6. Connecting part. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings.

[0045] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached Figure 1 In the description, the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from a particular component geometry, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this specification, "plurality" means two or more, unless otherwise specifically defined in terms of the center's direction.

[0046] Example 1:

[0047] like Figure 1-3 As shown, a multi-dose metered nasal spray device is characterized by comprising a housing assembly 1, the housing assembly 1 comprising a main housing 12, a button 13, a button cover 14, a pressing spring 15 and a nose pad 16;

[0048] The nozzle assembly 2 includes a needle tube 21 and a needle tube sleeve 22, wherein the needle tube 21 is sleeved in the needle tube sleeve 22;

[0049] The liquid storage assembly 3 is located inside the main housing 12 and includes a medicine bottle 31 and a sealing piston 32. The needle sleeve 22 is sleeved inside the medicine bottle 21.

[0050] The quantitative advancement component 4 is located outside the liquid storage component 3 and includes a bottle sleeve 41 and a counting cover 42. The medicine bottle 31 is sleeved in the bottle sleeve 41. The surface of the bottle sleeve 41 is provided with a continuous inclined groove. The counting cover 42 is located outside the bottle sleeve 41.

[0051] The counting assembly 5 includes a counting spring 51 , a counting disk 52 , a sliding pawl 53 and an anti-backward pawl 54 .

[0052] like Figure 2 As shown, the sliding pawl 53 is provided with an anti-accidental touch structure for first use, which includes a breakable connection part. When pressed for the first time, a force exceeding the normal operating pressure is required to break it. The needle sleeve 22 is sealed with the end face of the sealing piston 32. When the medicine bottle is pushed in, the needle tube 21 pierces the sealing piston 32 to form a medicine channel. The counting disk 52 is aligned with the digital display hole on the main shell 12 through the transparent window, thereby displaying the remaining dose. The bottle sleeve 41 can accommodate at least 8 standard dose medicine containers. The sliding pawl 53 is elastically deformed during the resetting process and automatically snaps into the next inclined slot position of the bottle sleeve 41. When the counting disk 52 is pressed, the inclined protrusion of the bottle sleeve 41 pushes the inner circle inclined surface of the counting disk 52 to produce When the counting disk 52 rotates at the first angle and is reset, the inclined surface of the counting cover 42 cooperates with the inclined surface of the outer ring of the counting disk 52 to produce a second angle of rotation. The single advancement distance of the quantitative advancement component 4 is determined by the spacing of the inclined surface grooves of the bottle sleeve 41, which corresponds to the standard drug dosage volume. The counting spring 51 and the pressing spring 15 together constitute a two-way reset mechanism, which respectively drives the counting disk 52 and the button 13 to return to the initial position. The counting disk 52 is provided with an inner ring tooth surface and an outer ring tooth surface. The sliding pawl 53 and the anti-backward pawl 54 are engaged with the inclined surface groove of the bottle sleeve 41 at the same time. The inner ring tooth surface of the counting disk 52 cooperates with the sliding pawl 53, and the outer ring tooth surface cooperates with the counting cover 42. The inner ring tooth surface and the outer ring tooth surface of the counting disk 52 are staggered.

[0053] like Figure 4As shown, at the starting position, the sealing piston 32 is away from the needle tube 21, and the pressing spring 15 pushes the button upward. After reaching the position, the limiting module at the top of the main shell 12 clamps it.

[0054] like Figure 5 As shown, when in the middle position, the retracted pawl 54 is engaged with the inclined groove on the surface of the bottle sleeve 41 to lock the bottle sleeve 41 in the designated position.

[0055] like Figure 6 As shown, at the end position, the button 13 is pressed down, and the sliding pawl 53 and the pressing spring 15 are pressed down accordingly. The anti-retraction pawl 54 is locked with the groove on the surface of the bottle sleeve 41 to prevent retreat. The needle tube 21 is inserted into the sealing piston 32, and the needle tube sleeve 22 wrapped around the outside of the needle tube 21 cooperates with the end face of the sealing piston 32. When the medicine bottle 31 moves forward, the medicine liquid in the medicine bottle 31 is sprayed to the outside through the needle tube 21.

[0056] like Figure 7 As shown, in the starting position, the counting cover 42 is engaged with the outer teeth of the counting disk 52 , and the inner teeth of the counting disk 52 are away from the sliding pawl 53 .

[0057] like Figure 8 As shown, at the end position, the counting cover 42 is away from the outer teeth of the counting disk 52, and the sliding pawl 53 is pressed down to engage with the inner teeth of the counting disk 52 to drive the counting disk 52 to rotate the corresponding mileage.

[0058] like Figure 9 As shown, the sliding pawl 53 is provided with a breakable connecting portion 6 on the outside, which needs to be broken by applying a force exceeding the normal operating pressure when used for the first time to prevent accidental contact during transportation or storage.

[0059] like Figure 10-11 As shown, after the device completes a complete preferred embodiment, the digital changes of the counting disk 52 can be seen through the digital display hole on the surface of the main shell 12.

[0060] Specific implementation process: Before assembly, the present invention first removes the button 13 cover, then places the medicine bottle 31 filled with liquid medicine and sealed with the sealing piston 32 into the bottle sleeve 41, and inserts the middle hole of the button 13 of the bottle sleeve 41 into the housing assembly 1 until it is flush with the end face of the button 13. The assembly is complete, and the button 13 cover is then replaced for use. During use, pressing the button 13 causes the sliding pawl 53 in the counting assembly 5 to move forward. When the sliding pawl 53 moves, it also drives the bottle sleeve 41 forward, which in turn drives the medicine bottle 31 forward. At the same time, the inclined surface inside the bottle sleeve 41 cooperates with the inner tooth surface of the counting disk 52, causing the counting disk 52 to rotate a certain angle and move forward. When the sliding pawl 53 moves to the designated position, the anti-retraction pawl 54 engages the next inclined slot on the bottle sleeve 41. At this point, the needle tube 21 in the nozzle assembly 2 punctures the sealing piston 32 in the liquid reservoir assembly 3. The needle sleeve 22 wrapped around the needle tube 21 cooperates with the end surface of the sealing piston 32. As the medicine bottle 31 moves forward, the liquid in the medicine bottle 31 is ejected through the hollow needle tube 21. The inclined protrusions on the surface of the bottle sleeve 41, the sliding pawl, and the anti-retraction pawl ensure unidirectional movement of the medicine bottle 31 and control the movement distance. Since the inner diameter of the medicine bottle 31 is consistent, a quantitative injection function of the medicine is achieved. When the button 13 is released, the counting disk 52 moves back under the action of the counting spring 51, and the sliding pawl 53 also returns to its original position in cooperation with the counting disk 52. The button 13 begins to reset under the action of the pressing spring 15. During the resetting process, the sliding pawl 53 produces elastic deformation, so that the sliding pawl 53 is engaged with the inclined slot on the bottle sleeve 41 that needs to be engaged when the bottle sleeve 41 is pressed next time. At the same time, when the counting disk 52 is reset, the outer ring tooth surface of the counting disk 52 will cooperate with the tooth surface of the outer ring of the counting cover 42, so that the counting disk 52 rotates a certain angle again, thereby realizing the real-time counting function. The numbers on the counting disk 52 will be displayed through the outer wall of the transparent fixed pawl part and the circular digital display hole on the main shell 12. A breakable connecting part 6 is provided on the outer side of the sliding pawl 53. When used for the first time, a large force is required to press the button to destroy the connecting part 6, which has the effect of preventing accidental touch. At the same time, when used for the first time, the sliding pawl 53 will push the bottle sleeve 41 a farther distance to fill the internal space of the device when it is used for the first time, and make the dose of the first injection basically consistent with the dose of subsequent injections.

[0061] In the embodiments of the present invention, terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; and "connected" may refer to a direct connection or an indirect connection via an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments disclosed in the present invention based on specific circumstances.

[0062] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A multi-dose quantitative nasal spray device, characterized in that: include: A housing assembly, comprising a main housing, a button, a button cover, a pressing spring, and a nose pad; A nozzle assembly, the nozzle assembly comprising a needle tube and a needle tube sleeve, wherein the needle tube sleeve is disposed in the needle tube sleeve; A liquid storage assembly is located inside the main body shell, the liquid storage assembly includes a medicine bottle and a sealing piston, and the needle sleeve is set in the medicine bottle; A quantitative advancement assembly, the quantitative advancement assembly is located outside the liquid storage assembly, the quantitative advancement assembly includes a bottle sleeve and a counting cap, the medicine bottle sleeve is arranged in the bottle sleeve, a continuous card groove is provided on the surface of the bottle sleeve, and the counting cap is located outside the bottle sleeve; A counting assembly comprises a counting spring, a counting disk, a sliding pawl and an anti-backward pawl.

2. A multi-dose metered nasal spray device according to claim 1, characterized in that: The sliding pawl is provided with a plurality of arm structures leaning toward the bottle sleeve. The sliding pawl generates elastic deformation during the resetting process and is automatically engaged with the next engaging slot position of the bottle sleeve.

3. A multi-dose metered nasal spray device according to claim 2, characterized in that: The sliding pawl is provided with an anti-accidental touch structure for first-time use. The anti-accidental touch structure is a breakable connecting portion provided on the outer side of the sliding pawl. When pressed for the first time, a force exceeding the normal operating pressure needs to be applied to break it.

4. The multi-dose metered nasal spray device according to claim 1, characterized in that: The single advancement distance of the quantitative advancement component is determined by the spacing of the card slots of the bottle sleeve, and the spacing of a single card slot corresponds to the volume of a fixed single dose of medicine that can be released.

5. The multi-dose metered nasal spray device according to claim 1, characterized in that: The medicine bottle is sealed with the sealing piston. When the medicine bottle is pushed in, the needle tube pierces the sealing piston to form a medicine channel.

6. The multi-dose metered nasal spray device according to claim 1, characterized in that: The counting disc is provided with display numbers from 0 to N along the outer cylindrical surface, where N is the maximum dose of the medicine stored in the medicine bottle. The display numbers are aligned with the digital display holes on the main shell to display the remaining dose.

7. The multi-dose metered nasal spray device according to claim 1, characterized in that: The bottle sleeve can accommodate a medicine bottle that can be used for at least 8 standard doses.

8. The multi-dose metered nasal spray device according to claim 1, characterized in that: When the counting disk is pressed, the slot protrusion of the bottle sleeve pushes the inner tooth surface of the counting disk to rotate at a first angle. When the counting disk is reset, the inclined surface of the counting cover cooperates with the outer tooth surface of the counting disk to rotate at a second angle.

9. The multi-dose metered nasal spray device according to claim 1, characterized in that: The counting spring and the pressing spring together form a two-way reset mechanism, and the two-way reset mechanism drives the counting disk and the button to return to the initial position respectively.

10. A multi-dose metered nasal spray device according to claim 1, characterized in that: The counting disk is provided with an inner ring tooth surface and an outer ring tooth surface. The sliding pawl and the anti-backward pawl are engaged with the card slot of the bottle sleeve at the same time. The inner ring tooth surface of the counting disk cooperates with the sliding pawl, and the outer ring tooth surface cooperates with the counting cover. The inner ring tooth surface and the outer ring tooth surface of the counting disk are staggered.

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