Environment-friendly single-dose nasal spray device

Abstract

This utility model discloses an environmentally friendly single-dose nasal spray device, including a nasal spray body, a grip for hand handling, and a nozzle for spraying medication into the nasal cavity. The nasal spray body has an inner cavity containing an atomizing column for atomizing the medication. The atomizing column has a liquid outlet channel communicating with the nozzle. A medicine bottle is slidably disposed within the inner cavity. The medicine bottle has a push rod with one end extending out of the inner cavity for hand pressing to slide the bottle towards the atomizing column. A dynamic sealing assembly is provided within the medicine bottle, including a piston slidably disposed within the bottle and a valve rod with its lower end slidably inserted into the piston. The lower end of the piston and the inner wall of the medicine bottle form a liquid storage cavity. The valve rod has a communication channel sealed by the piston. When the medicine bottle slides, it moves the piston, causing the valve rod to move to the top of the atomizing column. The valve rod then slides downward relative to the piston, opening the communication channel and connecting the liquid storage cavity and the liquid outlet channel.

Description

[Technical Field]

[0001] This utility model relates to an environmentally friendly single-dose nasal spray device. [Background Technology]

[0002] A nasal spray device is a specialized device for delivering medication directly to the nasal cavity, especially the nasal mucosa, to prevent or treat nasal diseases and disorders. To use, place the dosage bottle containing the medication into the nasal spray device, aim the device at the nostril, and press the plunger to spray the medication into the nasal cavity.

[0003] Traditional nasal spray devices typically use a metal piercing syringe as their core component. During use, pressing a push rod moves the vial, causing the rubber stopper inside to pierce the stopper and dispensing the medication. However, this traditional structure has several drawbacks: First, the piercing syringe can easily cause the stopper to break into fragments, which may contaminate the medication and potentially clog the dispensing nozzle. Second, with prolonged use or storage, the metal piercing syringe is prone to aging and rusting, contaminating the medication and affecting its safety and effectiveness. Third, the manufacturing and use of metal piercing syringes are relatively expensive and environmentally unfriendly.

[0004] Therefore, this utility model was created based on the above-mentioned shortcomings. [Utility Model Content]

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an environmentally friendly single-dose nasal spray device that is anti-clogging, anti-pollution, and low-cost.

[0006] This utility model is achieved through the following technical solution:

[0007] An environmentally friendly single-dose nasal spray device is characterized by comprising a nasal spray body 1, wherein the nasal spray body 1 is provided with a gripping part 11 for hand grasping and a nozzle 12 for spraying liquid medication into the nasal cavity; the nasal spray body 1 has an inner cavity 13, wherein the inner cavity 13 is provided with an atomizing column 2 for atomizing the liquid medication; the atomizing column 2 is provided with a liquid outlet channel 21 communicating with the nozzle 12; a medicine bottle 3 is slidably disposed within the inner cavity 13; the medicine bottle 3 is provided with a push rod 4, one end of which extends out of the inner cavity 13 for hand pressing to drive the medicine bottle 3 to slide along the inner cavity 13 toward the atomizing column 2. The medicine bottle 3 is provided with a dynamic sealing assembly 5. The dynamic sealing assembly 5 includes a piston 51 that can be slidably disposed in the medicine bottle 3 and a valve rod 52 whose lower end can be slidably inserted into the piston 51. The lower end of the piston 51 and the inner wall of the medicine bottle 3 form a liquid storage cavity 31. The valve rod 52 is provided with a connecting channel 521 sealed by the piston 51. When the medicine bottle 3 slides and drives the piston 51, causing the piston 51 to drive the valve rod 52 to move to the top against the atomizing column 2, the valve rod 52 slides downward relative to the piston 51, opening the connecting channel 521 and connecting the liquid storage cavity 31 with the liquid outlet channel 21.

[0008] The environmentally friendly single-dose nasal spray device described above is characterized in that: the piston 51 is provided with a sealing flange 511 protruding towards the center and a lower channel 512 located below the sealing flange 511 and communicating with the liquid storage chamber 31. The communicating channel 521 includes an axial channel 5211 that can communicate with the liquid outlet channel 21 and a communicating port 5212 opened on the side wall of the valve stem 52 and initially sealed by the sealing flange 511. When the valve stem 52 slides relative to the piston 51, the communicating port 5212 moves into the lower channel 512, so that the axial channel 5211 communicates with the lower channel 512.

[0009] The environmentally friendly single-dose nasal spray device described above is characterized in that: a positioning ring 6 is provided at the bottom of the nasal spray body 1, and a safety rib 7 is provided on the positioning ring 6, which is connected to the outer wall of the push rod 4 and breaks when the push rod 4 is pressed.

[0010] The environmentally friendly single-dose nasal spray device described above is characterized in that: the cross-sectional area of ​​the safety rib 7 gradually decreases from the positioning ring 6 to the push rod 4.

[0011] The environmentally friendly single-dose nasal spray device described above is characterized in that: the bottom of the atomizing column 2 is provided with a slot 22 for the upper end of the valve rod 52 to be inserted when the piston 51 drives the valve rod 52 to move, and the slot 22 and the upper end of the valve rod 52 are press-fitted to form a sealing structure.

[0012] The environmentally friendly single-dose nasal spray device described above is characterized in that: the inlet edge of the slot 22 has a guide slope 23 for guiding the insertion of the valve stem 52.

[0013] The environmentally friendly single-dose nasal spray device described above is characterized in that: the valve stem 52 is provided with a positioning flange 522 that abuts against the upper end face of the piston 51 after the valve stem 52 slides relative to the piston 51.

[0014] The environmentally friendly single-dose nasal spray device described above is characterized in that: the nasal spray body 1 and the grip part 11 are integrally formed.

[0015] The environmentally friendly single-dose nasal spray device described above is characterized in that: the nasal spray body 1, atomizing column 2, piston 51, push rod 4, medicine bottle 3, valve stem 52, and positioning ring 6 are all made of plastic injection molding.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This utility model connects the valve stem to the piston and can effectively seal the medicine bottle. When in use, the push rod is pressed and moved upwards along with the medicine bottle until the valve stem presses against the atomizing column and seals. The sliding cooperation between the valve stem and the piston opens the channel. It abandons the traditional metal piercing syringe and uses a plastic valve stem instead, avoiding the risks of colloid contamination, hole blockage, and metal rust contamination of the medicine. Moreover, it is lower in cost and more environmentally friendly.

[0018] 2. In this utility model, a positioning ring is connected to the outer wall of the push rod by a safety rib. The positioning ring abuts against the bottom of the nasal spray body. When the push rod is pressed for the first time, the safety rib breaks, forming an anti-theft indicator, ensuring the effectiveness of single use, preventing contamination caused by repeated use, and also preventing accidental activation. [Attached Image Description]

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a cross-sectional view of the present invention when the push rod is not pressed down;

[0021] Figure 3 This is a cross-sectional view of the present invention when the push rod is pressed down;

[0022] Figure 4 This is an exploded view of the present invention;

[0023] Figure 5 This is a structural diagram of the push rod and the positioning ring.

Detailed Implementation Methods

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] like Figures 1 to 5As shown, an environmentally friendly single-dose nasal spray device includes a nasal spray body 1, which has a grip 11 for hand handling and a nozzle 12 for spraying medication into the nasal cavity. The nasal spray body 1 has an inner cavity 13, within which is an atomizing column 2 for atomizing the medication. The atomizing column 2 has a liquid outlet channel 21 communicating with the nozzle 12. A medicine bottle 3 is slidably disposed within the inner cavity 13. The medicine bottle 3 has a push rod 4 with one end extending out of the inner cavity 13 for pressing by hand to slide the medicine bottle 3 along the inner cavity 13 towards the atomizing column 2. The bottle 3 is equipped with a dynamic sealing assembly 5, which includes a piston 51 that can slide relatively inside the medicine bottle 3 and a valve stem 52 whose lower end can slide into the piston 51. The lower end of the piston 51 and the inner wall of the medicine bottle 3 form a liquid storage cavity 31. The valve stem 52 is provided with a connecting channel 521 sealed by the piston 51. When the medicine bottle 3 slides and drives the piston 51, causing the piston 51 to drive the valve stem 52 to move to the top against the atomizing column 2, the valve stem 52 slides downward relative to the piston 51, opening the connecting channel 521 and connecting the liquid storage cavity 31 with the liquid outlet channel 21. When in use, the user can grasp the grip part 11 and aim the nozzle 12 at the nasal cavity where the medicine needs to be sprayed. When the push rod 4 is pressed, the medicine bottle 3 drives the piston 51 and valve rod 52 to move towards the nebulizing column 2. When the valve rod 52 is pressed against the nebulizing column 2, the medicine bottle 3 continues to move, forcing the valve rod 52 to slide downward relative to the piston 51. At this time, the connecting channel 521 is opened, and the medicine in the storage chamber 31 is sprayed out from the nozzle 12 through the connecting channel 521 and the liquid outlet channel 21 of the nebulizing column 2, completing the single-dose administration.

[0026] This invention connects the valve stem 52 to the piston 51 and can effectively seal the medicine bottle 3. In use, the push rod 4 is pressed to move the medicine bottle 3 upwards until the valve stem 52 presses against the atomizing column 2 and seals. The sliding cooperation between the valve stem 52 and the piston 51 opens the channel. It abandons the traditional metal piercing syringe and uses a plastic valve stem instead, avoiding the risks of colloid contamination, hole blockage, and metal rust contamination of the medicine. Moreover, it is lower in cost and more environmentally friendly.

[0027] Specifically, the piston 51 has a centrally protruding sealing flange 511 and a lower channel 512 located below the sealing flange 511 and communicating with the liquid storage chamber 31. The communicating channel 521 includes an axial channel 5211 that communicates with the liquid outlet channel 21 and a communicating port 5212 located on the side wall of the valve stem 52 and initially sealed by the sealing flange 511. The sealing flange 511 is an annular inner convex ring located in the middle of the inner hole of the piston 51. When the valve stem 52 slides relative to the piston 51, the communicating port 5212 moves into the lower channel 512, connecting the axial channel 5211 with the lower channel 512, thus enabling the flow of the liquid medicine.

[0028] Furthermore, the bottom of the nasal spray body 1 is provided with a positioning ring 6, and the positioning ring 6 is provided with a safety rib 7 connected to the outer wall of the push rod 4 and breaking when the push rod 4 is pressed. Specifically, the bottom of the nasal spray body 1 is provided with a snap-fit ​​groove 14, and the positioning ring 6 is snapped into the snap-fit ​​groove 14. Three safety ribs 7 are evenly distributed on the inner side of the positioning ring 6, and the two ends of the three safety ribs 7 are respectively connected to the inner wall of the positioning ring 6 and the outer wall of the push rod 4. When the push rod 4 is pressed for the first time, the safety rib 7 breaks because the positioning ring 6 is against the bottom of the nasal spray body 1. The safety rib 7 breaks due to concentrated force, forming an anti-theft indicator, ensuring the effectiveness of single use, ensuring that it cannot be repeated after single use, preventing contamination caused by repeated use, achieving single dose limitation, and also playing a role in preventing accidental activation.

[0029] Specifically, the cross-sectional area of ​​the safety rib 7 gradually decreases from the positioning ring 6 towards the push rod 4. The cross-sectional area of ​​the safety rib 7 is trapezoidal, and it gradually decreases from the end connected to the inner wall of the positioning ring 6 to the other end connected to the outer wall of the push rod 4.

[0030] The bottom of the atomizing column 2 is provided with a slot 22 for the upper end of the valve stem 52 to be inserted when the piston 51 moves the valve stem 52. The slot 22 and the upper end of the valve stem 52 are press-fitted to form a sealing structure. The slot 22 and the upper end of the valve stem 52 are press-fitted to form a reliable seal to prevent leakage of the medicine.

[0031] Specifically, the inlet edge of the slot 22 has a guide slope 23 for guiding the insertion of the valve stem 52, which facilitates the insertion of the upper end of the valve stem 52.

[0032] The valve stem 52 is provided with a positioning flange 522, which abuts against the upper end face of the piston 51 after the valve stem 52 slides relative to the piston 51. When the valve stem 52 slides relative to the piston 51 until the connecting channel 521 is fully opened, the positioning flange 522 abuts against the upper end face of the piston 51, so that the piston 51 can slide relative to the medicine bottle 3 as the push rod 4 continues to push the medicine bottle 3, squeezing out the liquid in the liquid storage chamber 31.

[0033] In this invention, the nasal spray body 1 and the grip part 11 are integrally formed. The grip part 11 is integrally formed at the bottom of the nasal spray body 1, resulting in a stable structure.

[0034] In this invention, the nasal spray body 1, atomizing column 2, piston 51, push rod 4, medicine bottle 3, valve stem 52, and positioning ring 6 are all injection molded from plastic. All components of this environmentally friendly single-dose nasal spray device are made of plastic injection molding, replacing traditional metal parts, reducing costs and improving environmental friendliness.

Claims

1. An environmentally friendly single-dose nasal spray device, characterized by: The device includes a nasal spray body (1), which has a grip (11) for hand gripping and a nozzle (12) for spraying the medication into the nasal cavity. The nasal spray body (1) has an inner cavity (13), which contains an atomizing column (2) for atomizing the medication. The atomizing column (2) has a liquid outlet channel (21) communicating with the nozzle (12). A medicine bottle (3) is slidably disposed within the inner cavity (13). The medicine bottle (3) has a push rod (4) with one end extending out of the inner cavity (13) for hand pressing to slide the medicine bottle (3) towards the atomizing column (2). The medicine bottle (3) also has a movable... The dynamic sealing assembly (5) includes a piston (51) that can slide relatively inside the medicine bottle (3) and a valve stem (52) whose lower end can slide into the piston (51). The lower end of the piston (51) and the inner wall of the medicine bottle (3) form a liquid storage cavity (31). The valve stem (52) is provided with a connecting channel (521) sealed by the piston (51). When the medicine bottle (3) slides and drives the piston (51), causing the piston (51) to drive the valve stem (52) to move to the top against the atomizing column (2), the valve stem (52) slides downward relative to the piston (51) to open the connecting channel (521) and connect the liquid storage cavity (31) and the liquid outlet channel (21).

2. The environmentally friendly single-dose nasal spray device according to claim 1, characterized in that: The piston (51) is provided with a sealing flange (511) protruding towards the center and a lower channel (512) located below the sealing flange (511) and communicating with the liquid storage chamber (31). The communicating channel (521) includes an axial channel (5211) that can communicate with the liquid outlet channel (21) and a communicating port (5212) opened on the side wall of the valve stem (52) and initially sealed by the sealing flange (511). When the valve stem (52) slides relative to the piston (51), the communicating port (5212) moves into the lower channel (512) so that the axial channel (5211) communicates with the lower channel (512).

3. The environmentally friendly single-dose nasal spray device according to claim 1, characterized in that: The bottom of the nasal spray body (1) is provided with a positioning ring (6), and the positioning ring (6) is provided with a safety rib (7) that is connected to the outer wall of the push rod (4) and breaks when the push rod (4) is pressed.

4. The environmentally friendly single-dose nasal spray device according to claim 3, characterized in that: The cross-sectional area of ​​the safety rib (7) gradually decreases from the positioning ring (6) towards the push rod (4).

5. The environmentally friendly single-dose nasal spray device according to claim 1, characterized in that: The bottom of the atomizing column (2) is provided with a slot (22) for the upper end of the valve rod (52) to be inserted when the piston (51) drives the valve rod (52) to move. The slot (22) and the upper end of the valve rod (52) are interference-fitted to form a sealing structure.

6. The environmentally friendly single-dose nasal spray device according to claim 5, characterized in that: The slot (22) has a guide ramp (23) at the entrance edge to guide the insertion of the valve stem (52).

7. The environmentally friendly single-dose nasal spray device according to claim 1, characterized in that: The valve stem (52) is provided with a positioning flange (522) that abuts against the upper end face of the piston (51) for positioning after the valve stem (52) slides relative to the piston (51).

8. The environmentally friendly single-dose nasal spray device according to claim 1, characterized in that: The nasal spray body (1) and the grip part (11) are integrally formed.

9. The environmentally friendly single-dose nasal spray device according to claim 3, characterized in that: The nasal spray body (1), atomizing column (2), piston (51), push rod (4), medicine bottle (3), valve rod (52), positioning ring (6) are all formed by plastic injection molding.

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