Nasal administration device with counting function
By introducing a mechanical counting module into the nasal delivery device and utilizing the meshing structure of ratchet and pawl, the problems of inaccurate counting and high cost of nasal sprays are solved, achieving accurate counting and cost-effective dosage control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG DYNE MARINE BIOTECHCAL PHARM HLDG CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-07
AI Technical Summary
Existing nasal sprays lack a remaining dose indication function, relying on the patient's subjective judgment, which leads to inaccuracies and affects treatment effectiveness, especially in scenarios where precise dose control is required; electronic counting mechanisms are costly and not suitable for nasal sprays used for short periods.
It adopts a mechanical counting module, including a counting disk and an external pawl. Counting is achieved by pressing the spray push button. The meshing structure of the ratchet and pawl ensures accurate counting and does not require power support.
It achieves accurate counting, reduces costs, avoids treatment interruptions when medication runs out, and improves the reliability of treatment and the precision of dosage control.
Smart Images
Figure CN224462114U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical drug delivery device technology, specifically relating to a nasal drug delivery device with counting function. Background Technology
[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.
[0003] Nasal sprays currently on the market (such as corticosteroids) are widely used to treat conditions such as allergic rhinitis and chronic rhinitis. However, these sprays generally lack a remaining dose indication function, and patients usually rely on their subjective judgment of the remaining dose, such as by shaking the container to listen for the sound, observing the liquid level, or estimating the number of uses from memory.
[0004] These methods are not only inaccurate but also exhibit significant individual differences. Patients often find it difficult to keep track of the remaining medication dosage during use, and they only realize the problem passively when the medication runs out or the spray can no longer be output, leading to treatment interruption or reduced efficacy. This is especially true in treatment scenarios that require precise dosage control (such as pediatric hormone therapy and postoperative medication management), where dosage inaccuracies are more likely to occur, affecting treatment outcomes.
[0005] Existing electronic counting mechanisms are displayed via electronic displays, requiring a power supply module and sensors to capture the actions performed. This is not conducive to cost control and is not suitable for nasal sprays with short usage cycles. Utility Model Content
[0006] In view of this, the purpose of this utility model is to provide a nasal drug delivery device with a counting function, whose internal mechanical counting module can solve the problems of the inability of sprays to count and the high cost of using electronic counting mechanisms.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A nasal delivery device with a counting function is provided, including a protective cap, a bottle body, and a spray push button. A spray assembly is disposed between the bottle body and the spray push button, and a mechanical counting module is disposed on one side of the spray assembly.
[0009] The mechanical counting module includes a counting disk and an external pawl. The outer surface of the counting disk is divided into a digital section and an external ratchet section along the axial direction. Several digital scales are evenly arranged along the circumference of the digital section. Several ratchet teeth are evenly arranged along the circumference of the external ratchet section. The top of the external pawl meshes with the ratchet teeth. The external pawl is made of elastic material.
[0010] The bottom end of the external pawl is fixedly connected to the support rod, and the bottom end of the support rod is connected to the top of the bottle body;
[0011] The inner surface of the counting disc is rotatably connected to the inner ratchet; the inner ratchet is fixedly connected to one end of the connecting shaft, and the other end of the connecting shaft is fixed to the inner wall of the spray push button; several ratchet internal teeth are evenly arranged around the inner disc; multiple internal pawls are evenly arranged around the inner ratchet; the internal pawls mesh with the ratchet internal teeth.
[0012] Preferably, the outer pawl is located below the side of the counting disc away from the base of the spray assembly, and the outer teeth of the ratchet face downwards, so that when the counting disc moves downwards, the outer pawl pushes the counting disc to reverse direction; the inner pawl of the inner ratchet faces counterclockwise to prevent the counting disc from rotating clockwise.
[0013] Preferably, the mechanical counting module further includes a coupling slot fixedly disposed on the side wall of the spray push button, and a support rod slot fixedly disposed on the top of the bottle body. The end of the coupling away from the inner ratchet is inserted into the coupling slot for fixation, and the bottom end of the support rod is inserted into the support rod slot for fixation.
[0014] Preferably, the support rod slot and the connecting shaft slot are designed as square slots, and the bottom end of the support rod and the end of the connecting shaft away from the inner ratchet are both designed as square heads, with the square heads matching the square slots.
[0015] Preferably, a fixing groove is provided at the top of the support rod, and the bottom end of the external pawl is inserted into the fixing groove; and limiting protrusions are provided on both sides of the bottom end of the external pawl, and corresponding limiting holes are provided on both sides of the fixing groove.
[0016] Preferably, a viewing window is provided at a corresponding position on the side wall of the spray button, and the viewing window faces the digital section.
[0017] Preferably, the number of numerical scale marks is equal to the number of ratchet teeth, and each numerical scale mark corresponds to each ratchet tooth.
[0018] Preferably, the mechanical counting module also includes positioning rods on both sides of the counting disk along the axial direction, with the top of the positioning rods fixedly connected to the top wall of the spray push button and the bottom of the positioning rods located on both sides of the counting disk along the axial direction.
[0019] Preferably, a push button connecting section and a cap connecting section are provided on the top of the bottle body, and the diameter of the push button connecting section is smaller than that of the cap connecting section; the spray push button is sleeved on the outside of the push button connecting section, and the top of the push button connecting section is connected to the spray assembly; when the spray assembly is in the limit position, the bottom of the counting disc is above the spray assembly.
[0020] Preferably, the cap connecting section is provided with a protrusion, and the protective cover adopts a straight snap structure to cooperate with the protrusion of the cap connecting section.
[0021] Compared with the prior art, the advantages and positive effects of this utility model are:
[0022] This invention features a mechanical counting module on one side of the spray assembly, where the inner surface of the counting disc is rotatably connected to an inner ratchet. The outer surface of the counting disc is divided into a digital section and an outer ratchet section, with ratchet teeth evenly distributed around the circumference of the outer ratchet section. An outer pawl is fixed to the top of the bottle via a support rod, engaging with the ratchet teeth. When the counting disc moves downwards with the spray push button, it drives the counting disc to rotate, causing the digital section to rotate and thus enabling counting. This solves the problem of traditional nasal sprays lacking a counting mechanism and the high cost associated with using electronic counting mechanisms. Furthermore, the inner surface of the counting disc is also circumferentially equipped with ratchet teeth, and an inner pawl is circumferentially positioned within the inner ratchet, engaging with the ratchet teeth to prevent the counting disc from reversing and causing counting failure. Attached Figure Description
[0023] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0024] Figure 1 This is a front cross-sectional view of a nasal drug delivery device with counting function according to an embodiment of the present invention;
[0025] Figure 2 This is a schematic diagram of the counting disk and the external ratchet pawl according to an embodiment of the present invention;
[0026] Figure 3 This is a side cross-sectional view of a nasal drug delivery device with counting function according to an embodiment of the present invention;
[0027] Figure 4 This is an outer surface view of the bottle body and spray button according to an embodiment of the present invention;
[0028] Figure 5 This is an outer surface view of the bottle body and protective cap according to an embodiment of the present utility model;
[0029] In the picture:
[0030] 1. Protective cap; 2. Bottle body; 21. Push button connecting section; 22. Cap connecting section; 3. Spray push button; 31. Spray assembly; 4. Viewing window; 5. Counting disc; 51. Ratchet internal teeth; 6. Internal ratchet; 61. Internal pawl; 7. Positioning rod; 8. Digital part; 9. External pawl; 10. Support rod; 11. Support rod slot; 12. Coupling slot; 13. Coupling; 14. Fixing slot; 15. Digital scale; 16. External ratchet part; 161. Ratchet external teeth. Detailed Implementation
[0031] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0032] The present invention will now be described in detail with reference to the accompanying drawings.
[0033] This embodiment discloses a nasal drug delivery device with a counting function, such as... Figure 1 As shown, the device includes a protective cap 1, a bottle body 2, and a spray push button 3. A spray assembly 31 is provided between the bottle body 2 and the spray push button 3 to draw out the medicine inside the bottle body and spray it out through the nozzle at the top of the spray push button 3. This is something that can be achieved with existing technology. This embodiment does not involve any improvement to the spray assembly, and the structural composition of the spray assembly will not be described in detail.
[0034] like Figure 1 , Figure 2 As shown, a mechanical counting module for counting is provided on one side of the spray assembly 31; the mechanical counting module includes a counting disk 5 and an outer pawl 9. The counting disk 5 is set on the inner wall of the spray push button 3 and can move downward with the spray push button 3; the outer disk surface of the counting disk 5 is divided into a digital part 8 and an outer ratchet part 16 along the axial direction, and a number of digital scales 15 are evenly arranged along the circumference of the digital part 8; a number of ratchet teeth 161 are evenly arranged along the circumference of the outer ratchet part 16, and the top of the outer pawl 9 meshes with the ratchet teeth 161; the bottom end of the outer pawl 9 is fixedly connected to the support rod 10, and the bottom end of the support rod 10 is connected to the top of the bottle body 2.
[0035] In this embodiment, as Figure 1 , Figure 2 , Figure 3 As shown, the inner surface of the counting disk 5 is rotatably connected to the inner ratchet 6; the inner ratchet 6 is fixed to one end of the connecting shaft 13, and the other end of the connecting shaft 13 is fixed to the inner wall of the spray push button 3. Several ratchet teeth 51 are evenly arranged in the circumferential direction on the inner surface of the counting disk 5; several inner pawls 61 are evenly arranged in the circumferential direction on the inner ratchet 6; the inner pawls 61 mesh with the ratchet teeth 51, so that the counting disk 5 can only rotate in one direction, avoiding the counting disk from reversing and causing counting failure.
[0036] In this embodiment, the outer pawl 9 is made of an elastic material (such as polyamide) and has a certain elasticity. When the spray button 3 moves downward under the action of external force (the patient presses down the spray button 3 with their finger), it drives the counting disk 5 to move downward. Then, the ratchet outer teeth 161 of the counting disk 5 move downward as well. The ratchet outer teeth 161 mesh with the top of the outer pawl 9, and the outer pawl 9 undergoes elastic deformation. This deformation acts on the ratchet outer teeth 161, pushing the counting disk 5 to rotate counterclockwise relative to the inner ratchet 6, thereby causing the digital part 8 to rotate counterclockwise by one tooth pitch.
[0037] When the external force acting on the spray push button 3 disappears, the spray push button 3 resets upward under the action of the spring of the spray assembly, and at the same time drives the counting disk 5 to move upward. At this time, the outer pawl 9 returns to its original position after elastic deformation, and the top of the outer pawl 9 returns to its initial position. With the next downward press of the spray push button 3, the counting disk 5 is driven to rotate.
[0038] Understandably, the patient releases the medication by pressing the spray button 3, while the mechanical counting module performs a count.
[0039] like Figure 2 As shown, the outer pawl 9 is located below the side of the counting disk 5 away from the base of the spray assembly. The outer teeth 161 of the ratchet engage with the top of the outer pawl 9, with the opening of the outer teeth 161 facing downwards. Figure 2 As shown, in this embodiment, when the counting disk 5 moves downward, the upper side of the ratchet outer tooth 161 (which can be referred to as the outer pawl pushing side) has a steeper slope (for example, designed with an inclination angle of 60-80°, such as 75°), which facilitates the application of pushing force after the outer pawl 9 deforms; the lower side of the ratchet outer tooth 161 (which can be referred to as the outer pawl reset side) has a gentler slope (for example, designed with an inclination angle of 10-30°, such as 15°), which allows the outer pawl 9 to slide from the lower side of the previous ratchet outer tooth 161 to the upper side of the next ratchet outer tooth when the counting disk 5 moves upward, preparing for the next push and reducing the resistance when the outer pawl 9 slides back; ensuring that when the counting disk 5 is pressed down to move downward, the outer pawl 9 "push" the counting disk 5 to reverse; when the counting disk 5 is reset, the outer pawl 9 "slides" over the ratchet outer tooth 161. Figure 2 As shown, the inner pawl 61 of the inner ratchet 6 is oriented counterclockwise to prevent the counting disk 5 from rotating clockwise.
[0040] It should be noted that the aforementioned inclination angle refers to the angle between the upper and lower sides of the ratchet external tooth 161 and the corresponding outer arc tangent of the ratchet external tooth 161.
[0041] like Figure 1 - Figure 3 As shown, the mechanical counting module also includes a coupling slot 12 fixedly installed on the side wall of the spray push button 3. The end of the coupling 13 away from the inner ratchet 6 is inserted into the coupling slot 12 and fixed, so that the counting disk 5 can move up and down with the spray push button 3.
[0042] like Figure 1 - Figure 3 As shown, the mechanical counting module also includes a support rod slot 11 fixedly installed at the top of the bottle body. The bottom end of the support rod 10 is inserted into the support rod slot 11 to fix the support rod 10 at the top of the bottle body and support the external pawl 9.
[0043] In this embodiment, the support rod slot 11 and the connecting shaft slot 12 can be designed as square slots. The bottom end of the support rod 10 and the end of the connecting shaft 13 away from the inner ratchet 6 are both designed as square heads. The square heads are used in conjunction with the square slots. After the square heads are inserted into the square slots, the support rod 10 or the connecting shaft 13 can be prevented from rotating or shifting, thereby ensuring the stability of the connection.
[0044] like Figure 3 As shown, a fixing groove 14 is provided at the top of the support rod 10, and the bottom end of the external pawl 9 is inserted into the fixing groove 14 at the top of the support rod 10; and limiting protrusions are provided on both sides of the bottom end of the external pawl 9, and corresponding limiting holes are provided on both sides of the fixing groove 14; when the bottom end of the external pawl 9 is inserted into the fixing groove 14, the limiting protrusions engage with the limiting holes, so that the external pawl 9 is fixedly connected to the support rod 10, and the external pawl 9 will not rotate relative to the support rod 10.
[0045] It should be noted that, since the external pawl 9 has a certain degree of elasticity, and the support rod 10 has greater rigidity than the external pawl 9 in order to support the external pawl 9 and keep it stable, the structure of fixed slot, limiting protrusion and limiting hole can connect the two different materials of the external pawl 9 and the support rod 10.
[0046] In this embodiment, as Figure 4 As shown, a viewing window 4 is provided at the corresponding position on the side wall of the spray button 3. The viewing window 4 faces the digital section 8, allowing the patient to observe the numbers 15 on the digital section 8 through the viewing window 4.
[0047] Understandably, the height of the visible window 4 is equal to the size of a number scale 15, meaning that only one number is displayed at a time.
[0048] In this embodiment, the numbers on the scale 15 can increase or decrease clockwise. The counting dial 5 rotates counterclockwise. When the numbers on the scale 15 increase clockwise, the patient can know how many times the device has been used; when the numbers on the scale 15 decrease clockwise, the patient can know how many uses remain.
[0049] In this embodiment, the number of digital scales 15 is equal to the number of ratchet teeth 161, and each digital scale 15 corresponds to each ratchet tooth 161. When the counting disk 5 rotates counterclockwise by one tooth pitch under the action of the external pawl 9, the digital section 8 also rotates by one tooth pitch, so that the number observed in the viewing window 4 changes once.
[0050] Understandably, the number of 15 markings is related to the dosage inside the bottle; a larger dosage results in more markings, and a smaller dosage results in fewer markings. The number of 15 markings is set according to different bottle specifications.
[0051] In this embodiment, color differentiation and text prompts can be added to the numerical scale 15 to enhance readability. Alternatively, a magnifying lens can be set on the viewing window 4 to address the challenge of recognizing small fonts.
[0052] like Figure 1 - Figure 3 As shown, the mechanical counting module also includes positioning rods 7 on both sides of the counting disk 5 along its axial direction. The top of the positioning rods 7 is fixedly connected to the top wall of the spray push button 3, and the bottom of the positioning rods 7 is located on both sides of the counting disk 5 along its axial direction. Since the outer surface of the counting disk 5 is divided into a digital section 8 and an outer ratchet section 16 along its axial direction, when the outer pawl 9 meshes with the ratchet teeth 161 of the outer ratchet section 16, a force is applied to one side of the counting disk 5 along its axial direction, which may cause the counting disk 5 to rotate eccentrically. The positioning rods 7 are provided on both sides of the counting disk 5 to prevent the counting disk 5 from rotating eccentrically and causing the digital section 8 to shift.
[0053] like Figure 1 - Figure 5 As shown, the top of the bottle body 2 is provided with a push button connecting section 21 and a cap connecting section 22. The diameter of the push button connecting section 21 is smaller than that of the cap connecting section 22. The spray push button 3 is sleeved on the outside of the push button connecting section 21. The top of the push button connecting section 21 is connected to the spray assembly 31. When the spray push button 3 is pressed, the valve stem of the spray assembly 31 is pressed downward. The pressing process of the valve stem is fixed, which limits the spray push button 3. The height of the push button connecting section 21 is greater than the pressing process of the valve stem.
[0054] In this embodiment, since the spray push button 3 already has a limit switch, the mechanical counting module does not need to be equipped with a separate limit switch component. It should be noted that, as... Figure 1 As shown, when the valve stem of the spray assembly 31 reaches the pressing process (i.e., when the spray assembly reaches the limit), the bottom of the counting disk 5 is above the spray assembly to avoid interference between the mechanical counting module and the spray assembly 31.
[0055] like Figure 1 As shown, the cap connecting section 22 at the top of the bottle body 2 has a protrusion. The protective cover 1 adopts a snap-on structure and is connected to the protrusion of the cap connecting section 22. When not in use, the protective cover 1 can completely cover the spray push button 3 to prevent accidental pressing during transportation or carrying.
[0056] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.
Claims
1. A nasal delivery device with a counting function, comprising a protective cap, a bottle body, and a spray push button, wherein a spray assembly is disposed between the bottle body and the spray push button, characterized in that, A mechanical counting module is installed on one side of the spray assembly; The mechanical counting module includes a counting disk and an external pawl. The outer surface of the counting disk is divided into a digital section and an external ratchet section along the axial direction. Several digital scales are evenly arranged along the circumference of the digital section. Several ratchet teeth are evenly arranged along the circumference of the external ratchet section. The top of the external pawl meshes with the ratchet teeth. The external pawl is made of elastic material. The bottom end of the external pawl is fixedly connected to the support rod, and the bottom end of the support rod is connected to the top of the bottle body; The inner surface of the counting disc is rotatably connected to the inner ratchet; the inner ratchet is fixedly connected to one end of the connecting shaft, and the other end of the connecting shaft is fixed to the inner wall of the spray push button; several ratchet internal teeth are evenly arranged around the inner disc; multiple internal pawls are evenly arranged around the inner ratchet; the internal pawls mesh with the ratchet internal teeth.
2. The nasal delivery device with counting function as described in claim 1, characterized in that, The outer pawl is located below the side of the counting disc away from the base of the spray assembly. The outer teeth of the ratchet face downwards, so that when the counting disc moves downwards, the outer pawl pushes the counting disc to reverse direction. The inner pawl of the inner ratchet faces counterclockwise to prevent the counting disc from rotating clockwise.
3. The nasal delivery device with counting function as described in claim 1, characterized in that, The mechanical counting module also includes a coupling slot fixedly mounted on the side wall of the spray push button, and a support rod slot fixedly mounted on the top of the bottle. The end of the coupling away from the inner ratchet is inserted into the coupling slot for fixation, and the bottom end of the support rod is inserted into the support rod slot for fixation.
4. A nasal delivery device with counting function as described in claim 3, characterized in that, The support rod slot and the connecting shaft slot are designed as square slots. The bottom end of the support rod and the end of the connecting shaft away from the inner ratchet are both designed as square heads, and the square heads match the square slots.
5. A nasal delivery device with counting function as described in claim 4, characterized in that, The top of the support rod is provided with a fixing groove, and the bottom end of the external pawl is inserted into the fixing groove; and the bottom end of the external pawl is provided with limiting protrusions on both sides, and the fixing groove is provided with corresponding limiting holes on both sides.
6. A nasal delivery device with counting function as described in claim 1, characterized in that, A viewing window is provided at a corresponding position on the side wall of the spray button, and the viewing window faces the digital section.
7. A nasal delivery device with counting function as described in claim 1, characterized in that, The number of numerical scale marks is equal to the number of external teeth of the ratchet, and each numerical scale mark corresponds to each external tooth of the ratchet.
8. A nasal delivery device with counting function as described in claim 1, characterized in that, The mechanical counting module also includes positioning rods on both sides of the counting disk along the axis. The top of the positioning rods is fixedly connected to the top wall of the spray push button, and the bottom of the positioning rods is located on both sides of the counting disk along the axis.
9. A nasal delivery device with counting function as described in claim 1, characterized in that, The top of the bottle is provided with a push button connecting section and a cap connecting section, the diameter of which is smaller than that of the cap connecting section; the spray push button is sleeved on the outside of the push button connecting section, and the top of the push button connecting section is connected to the spray assembly; when the spray assembly is in the limit position, the bottom of the counting disc is above the spray assembly.
10. A nasal delivery device with counting function as described in claim 9, characterized in that, The cap connecting section is provided with a protrusion, and the protective cover adopts a straight snap structure, which is connected to the protrusion of the cap connecting section.