Quantitative dosing spray head for nasal cavity postoperative care

Abstract

The invention provides a quantitative drug delivery spray head for nasal cavity postoperative care, which comprises a spray head shell main body, a quantitative drug delivery piston assembly, an atomizing nozzle assembly, a power wrench, a catheter, a drug delivery bottle connecting cap, a quantitative storage cavity, an antifouling protection cavity assembly, a conduction tube cavity and a fixed hanging ring, and the quantitative dosing piston assembly is connected with the spray head shell main body and the power wrench. By means of the precise piston-cylinder body structure and the fixed stroke spring, it is guaranteed that the volume height of liquid medicine sprayed out by pressing every time is consistent, the problem that medicine is excessively or insufficiently used is effectively solved, and the safety and effectiveness of treatment are guaranteed; a three-stage atomization mechanism of micropore spraying, vortex atomization and mechanical impact is combined, generated fog drops are fine in particle size and concentrated in distribution, a wide and uniform spray field can be formed in cooperation with guiding of the vortex diffusion cover, and it is ensured that medicine can fully cover a wide area and crypt wrinkles in the nasal cavity without missing dead corners.

Description

Technical Field

[0001] This invention belongs to the field of atomizing nozzle technology, and particularly relates to a quantitative drug delivery nozzle for postoperative nasal care. Background Technology

[0002] The nasal cavity is part of the nose, a narrow, elongated cavity narrow at the top and wide at the bottom, starting from the anterior nasal opening and ending at the posterior nasal opening, communicating with the nasopharynx. It is divided into left and right cavities by the nasal septum, each nasal cavity consisting of the nasal vestibule and the proper nasal cavity. The nasal cavity primarily functions for respiration, smell, and resonance. It is the beginning and gateway of the respiratory tract. Nasal hairs in the nasal cavity filter larger dust particles from the air, reducing the inhalation of dust and other harmful substances. The cavernous sinuses beneath the nasal turbinate mucosa provide the heat needed to regulate the temperature within the nose. Nasal mucosal glands secrete large amounts of fluid to increase the humidity of inhaled air and prevent dryness of the respiratory mucosa. The sense of smell can enhance appetite, aid digestion, and has a protective function for the body.

[0003] Surgery inside the nasal cavity is extremely common, and most procedures require incisions inside the nasal cavity. For example, septoplasty involves cutting the nasal mucosa and removing the deviated nasal cartilage to correct the septoplasty. However, because the nasal mucosa is very fragile, it is extremely important to ensure that the nasal mucosa is not damaged or infected during postoperative care.

[0004] Following nasal surgeries such as endoscopic sinus surgery and septoplasty, nasal drops or sprays are typically used for local anti-inflammatory, swelling-reducing, moisturizing, and cleansing purposes to promote wound healing and prevent adhesions. Currently, the most common methods of administration are bottled nasal drops and manual sprays. However, existing postoperative nasal sprays suffer from uneven spray coverage, difficulty in controlling the dosage per application, and the risk of cross-contamination.

[0005] Therefore, it is essential to invent a metered delivery nozzle for postoperative nasal care. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a quantitative drug delivery nozzle for postoperative nasal care, solving the issues of difficulty in controlling the dosage and uneven spray coverage often found in existing postoperative nasal sprays or drops. The quantitative drug delivery nozzle for postoperative nasal care includes a nozzle housing, a quantitative drug delivery piston assembly, an atomizing nozzle assembly, a power wrench, a liquid guide tube, a drug delivery bottle connecting cap, a quantitative storage chamber, a contamination-proof protective chamber assembly, a conduction tube, and a fixing ring. The metering piston assembly is connected to the nozzle housing and the power wrench; the power wrench is pivotally located on the lower left side of the nozzle housing; the atomizing nozzle assembly is snapped into the left end of the nozzle housing; the liquid guide tube passes through the drug bottle connecting cap and is embedded in the lower inner side of the nozzle housing; the drug bottle connecting cap is integrally set in the lower part of the nozzle housing; the metering storage chamber is located in the middle of the inside of the nozzle housing; the anti-fouling protection chamber assembly is located on the upper left side of the inside of the nozzle housing; the conduction tube is located on the upper left side of the inside of the nozzle housing; and the fixing ring is embedded in the upper right side of the upper part of the nozzle housing.

[0007] Preferably, the metering piston assembly includes a piston cylinder, a spring pump tube, an inner piston pad, an outer piston pad, and a drive spring. The piston cylinder passes through the left side of the spring pump tube and is inserted into the outer piston pad. The outer piston pad fills the inside right side of the spring pump tube. The drive spring fills the inside of the spring pump tube and is located between the inner and outer piston pads.

[0008] Preferably, the atomizing nozzle assembly includes an atomizing nozzle head, a vortex diffuser, an air guide chamber, a liquid flow chamber, and connecting holes. The vortex diffuser is threadedly connected to the inner top of the atomizing nozzle head; the air guide chamber is located in the middle of the atomizing nozzle head; the liquid flow chamber is located inside the atomizing nozzle head; and the connecting holes are located on the left and right sides of the bottom of the atomizing nozzle head.

[0009] Preferably, the inner surface of the vortex diffuser is annularly inlaid with a diffusion impact cone; the diffusion impact cone is cone-shaped.

[0010] Preferably, the lower part of the quantitative storage cavity is fitted with an inlet check valve, and the upper part of the quantitative storage cavity is fitted with an outlet check valve.

[0011] Preferably, the anti-fouling protective cavity assembly includes a disposable transparent sterile sheath, a sheath storage cavity, a sliding cover, and a sterile cotton pad. The disposable transparent sterile sheath is filled inside the sheath storage cavity; the sliding cover is slidably fastened to the upper part of the sheath storage cavity; and the sterile cotton pad is laid at the bottom of the sheath storage cavity.

[0012] Preferably, the sheath storage cavity is located on the upper left side of the nozzle housing body.

[0013] Preferably, the disposable transparent sterile sheath is fitted onto the lower outer side of the atomizing nozzle assembly.

[0014] Preferably, the air guiding cavity is located inside the liquid flow cavity and is connected to it at the top.

[0015] Preferably, the air guiding cavity is funnel-shaped, narrow at the top and wide at the bottom; the atomizing nozzle head is inverted trapezoidal, and the atomizing nozzle head is engaged with the left end of the nozzle housing body and connected to the interior of the conducting tube cavity.

[0016] Preferably, the spring pump tube is embedded inside the nozzle housing and communicates with the interior of the metering storage chamber.

[0017] Preferably, the upper right side of the power wrench is embedded at the left end of the piston cylinder.

[0018] Preferably, the liquid guide tube, the quantitative storage chamber, and the conduction tube are connected in a continuous manner.

[0019] Preferably, the volume of the quantitative storage chamber can be designed as any standard specification of 0.05mL, 0.1mL or 0.15mL according to clinical needs.

[0020] Preferably, the nozzle housing body adopts an ergonomic streamlined design, which is easy to hold and press.

[0021] Preferably, the angle of the vortex diffuser is adjustable or replaceable to provide spray patterns with different diffusion ranges (such as wide-angle spray and narrow-angle deep spray).

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The quantitative drug delivery nozzle of the present invention, through a precise piston-cylinder structure and a fixed stroke spring, ensures that the volume of liquid medicine sprayed each time is highly consistent, effectively avoiding the problem of overdose or underdose, and ensuring the safety and effectiveness of treatment.

[0023] 2. The quantitative drug delivery nozzle of the present invention combines a three-stage atomization mechanism of micro-orifice injection, vortex atomization and mechanical impact, producing droplets with small particle size and concentrated distribution (SMD can reach 30-50 micrometers). With the guidance of the vortex diffusion hood, a wide and uniform spray field can be formed to ensure that the drug can fully cover the broad area and crevices of the nasal cavity without any blind spots.

[0024] 3. The detachable disposable transparent sterile sheath of the quantitative drug delivery nozzle of the present invention effectively isolates the nozzle from the patient's nasal cavity, preventing cross-infection. It is especially suitable for patients with low postoperative immunity. The transparent sheath makes it easy to observe the installation status.

[0025] 4. The user-friendly design and stable pressure requirements of the metering nozzle of this invention enable patients, especially the elderly or those with hand disabilities, to easily and accurately administer medication themselves. The operation is simple; patients only need to gently press the device to complete the metered spray administration, reducing the difficulty of use for patients and improving their compliance.

[0026] 5. The nozzle structure of this invention is rationally designed and can be connected to various common medicine bottles, thus having wide applicability. Furthermore, by adjusting the parameters of the metering mechanism and the spray nozzle, it can meet the postoperative nasal care needs of different medications and treatments, demonstrating strong flexibility and adaptability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2 This is a cross-sectional structural schematic diagram of the present invention.

[0029] Figure 3 This is a schematic diagram of the structure of the atomizing nozzle assembly of the present invention.

[0030] Figure 4 This is a schematic diagram of the anti-fouling protective cavity assembly of the present invention.

[0031] In the picture: 1. Nozzle housing; 2. Quantitative dosing piston assembly; 21. Piston cylinder; 22. Spring pump tube; 23. Inner piston pad; 24. Outer piston pad; 25. Drive spring; 3. Atomizing nozzle assembly; 31. Atomizing nozzle head; 32. Vortex diffuser hood; 321. Diffusion impact cone; 33. Air guide chamber; 34. Liquid flow chamber; 35. Connecting clip; 4. Power wrench; 5. Liquid guide tube; 6. Dosing bottle connecting cap; 7. Quantitative storage chamber; 71. Inlet check valve; 72. Outlet check valve; 8. Anti-fouling protection chamber assembly; 81. Disposable transparent sterile sheath; 82. Sheath storage chamber; 83. Sliding cover; 84. Sterilizing cotton; 9. Conductive tube chamber; 10. Fixing ring. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings: Example

[0033] As attached Figure 1 To be continued Figure 4 As shown, the present invention provides a quantitative drug delivery nozzle for postoperative nasal cavity care, comprising a nozzle housing body 1, a quantitative drug delivery piston assembly 2, an atomizing nozzle assembly 3, a power wrench 4, a liquid guide tube 5, a drug delivery bottle connecting cap 6, a quantitative storage chamber 7, a contamination-proof protective chamber assembly 8, a conduction tube 9, and a fixing ring 10. The metering piston assembly 2 is connected to the nozzle housing body 1 and the power wrench 4; the power wrench 4 is axially connected to the lower left side of the nozzle housing body 1; the atomizing nozzle assembly 3 is snapped into the left end of the nozzle housing body 1; the liquid guide tube 5 passes through the drug bottle connecting cap 6 and is embedded in the lower inner side of the nozzle housing body 1; the drug bottle connecting cap 6 is integrally set in the lower part of the nozzle housing body 1; the metering storage cavity 7 is opened in the middle of the inside of the nozzle housing body 1; the anti-fouling protection cavity assembly 8 is set in the upper left side of the inside of the nozzle housing body 1; the conduction cavity 9 is opened in the upper left side of the inside of the nozzle housing body 1; the fixing ring 10 is embedded in the upper right side of the upper part of the nozzle housing body 1.

[0034] In the above implementation scheme, specifically, the metering piston assembly 2 includes a piston cylinder 21, a spring pump tube 22, an inner piston pad 23, an outer piston pad 24, and a drive spring 25. The piston cylinder 21 passes through the left side of the spring pump tube 22 and is inserted into the outer piston pad 24. The outer piston pad 24 fills the inside right side of the spring pump tube 22. The drive spring 25 fills the inside of the spring pump tube 22 and is located between the inner piston pad 23 and the outer piston pad 24.

[0035] In the above implementation scheme, specifically, the atomizing nozzle assembly 3 includes an atomizing nozzle head 31, a vortex diffuser 32, an air guide chamber 33, a liquid flow chamber 34, and a connecting hole 35. The vortex diffuser 32 is threadedly connected to the inner top of the atomizing nozzle head 31; the air guide chamber 33 is located in the middle of the atomizing nozzle head 31; the liquid flow chamber 34 is located inside the atomizing nozzle head 31; and the connecting holes 35 are respectively located on the left and right sides of the bottom of the atomizing nozzle head 31.

[0036] In the above implementation scheme, specifically, the inner surface of the vortex diffuser 32 is annularly inlaid with a diffusion impact cone 321; the diffusion impact cone 321 is cone-shaped.

[0037] In the above implementation scheme, specifically, the lower part of the quantitative storage cavity 7 is inlaid with a liquid inlet check valve 71, and the upper part of the quantitative storage cavity 7 is inlaid with a liquid outlet check valve 72.

[0038] In the above implementation scheme, specifically, the anti-fouling protective cavity assembly 8 includes a disposable transparent sterile sheath 81, a sheath storage cavity 82, a sliding cover 83, and a disinfectant cotton 84. The disposable transparent sterile sheath 81 is filled inside the sheath storage cavity 82; the sliding cover 83 is slidably fastened to the upper part of the sheath storage cavity 82; and the disinfectant cotton 84 is laid at the bottom of the sheath storage cavity 82.

[0039] In the above implementation scheme, specifically, the sheath storage cavity 82 is located on the upper left side of the nozzle housing body 1.

[0040] In the above implementation scheme, specifically, the disposable transparent sterile sheath 81 is fitted onto the lower outer side of the atomizing nozzle assembly 3.

[0041] In the above implementation scheme, specifically, the air guiding cavity 33 is located inside the liquid flow cavity 34 and is connected to it at the top.

[0042] In the above implementation scheme, specifically, the air guide cavity 33 is a funnel shape that is narrow at the top and wide at the bottom; the atomizing nozzle head 31 is an inverted trapezoidal shape, and the atomizing nozzle head 31 is engaged with the left end of the nozzle housing body 1 and connected to the interior of the conduction tube cavity 9.

[0043] In the above implementation scheme, specifically, the spring pump tube 22 is embedded inside the nozzle housing body 1 and communicates with the inside of the metering storage cavity 7.

[0044] In the above implementation scheme, specifically, the upper right side of the power wrench 4 is embedded at the left end of the piston cylinder 21.

[0045] In the above implementation scheme, specifically, the liquid guide tube 5, the quantitative storage chamber 7, and the conduction tube 9 are connected in a continuous manner.

[0046] In the above implementation scheme, specifically, the volume of the quantitative storage chamber 7 can be designed as any standard specification of 0.05mL, 0.1mL or 0.15mL according to clinical needs.

[0047] In the above implementation scheme, specifically, the nozzle housing body 1 adopts an ergonomic streamlined design, which is convenient for gripping and pressing.

[0048] In the above implementation scheme, specifically, the angle of the vortex diffuser 32 is adjustable or replaceable to provide spray patterns with different diffusion ranges (such as wide-angle spray and narrow-angle deep spray).

[0049] The working process of this invention is as follows: The medication bottle connecting cap 6 is threadedly connected to the nasal care medication bottle. In the initial state: Under the pre-tightening force of the drive spring 25, the spring pump tube 22, the inner piston pad 23, and the outer piston pad 24 are in the reset rearward position, at which time a negative pressure is formed in the piston cylinder 21; the negative pressure causes the inlet one-way valve 71 to open and the outlet one-way valve 72 to close. Under atmospheric pressure, the medication in the bottle is drawn in through the medication bottle connecting cap 6 and fills the quantitative storage cavity 7 formed by the piston cylinder 21 and the piston pad. This process completes the accurate measurement of the medication for a single administration; the user pulls the power wrench 4 with their finger, and the power wrench 4, as a force-saving lever, converts its stroke into a smooth and controllable push on the quantitative administration piston assembly 2; the power wrench 4 pushes the outer piston pad 24 to compress the drive spring 25, and drives the entire pump body forward. At this time, the pressure in the quantitative storage chamber 7 increases, causing the inlet check valve 71 to close and the outlet check valve 72 to open. The precisely metered liquid, driven by pressure, pushes open the outlet check valve 72 and is transported to the flow chamber 34 of the front-end atomizing nozzle assembly 3 via the guide pipe 5 and the conduction chamber 9. The high-pressure liquid is first forced into the micron-sized nozzle orifice of the atomizing nozzle head 31, forming a high-speed jet. After entering the vortex diffuser 32, the jet rotates at high speed along its specific spiral flow channel guide groove, forming an extremely thin rotating liquid film. The rotating liquid film is thrown towards the outlet under centrifugal force and collides head-on and violently with the diffusion impact cone 321 located at the center. During this process, the liquid film is completely broken into fine droplets with a diameter SMD of 20-50 micrometers and uniform distribution. The generated fine droplets mix with the inhaled air in the air guide chamber 33 and pass through the vortex diffuser 32. Its unique curved structure is guided to form a broad, uniform, and gentle cone-shaped spray surface, thus perfectly covering the complex structures within the nasal cavity.

[0050] Contamination prevention and usage procedure: Before use, the user slides open the sliding cover 83 and takes out a disposable transparent sterile cover 81 from the cover storage cavity 82. The sterile cover 81 is then placed over the outside of the atomizing nozzle assembly 3. The nozzle with the cover is then inserted into the nasal cavity. The cover effectively isolates the nozzle from contact with the nasal cavity, preventing cross-infection. After use, the used sterile cover 81 is removed and discarded, and the sliding cover 83 is closed to keep the entire device clean for the next use.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A metered dose spray head for post-operative care of the nasal cavity, characterized in that, The quantitative dosing spray head for postoperative care of nasal cavity comprises a spray head shell body (1), a quantitative dosing piston assembly (2), an atomizing nozzle assembly (3), a power wrench (4), a liquid guide pipe (5), a dosing bottle connecting cap (6), a quantitative storage cavity (7), a pollution prevention protection cavity assembly (8), a conduction pipe cavity (9) and a fixed hanging ring (10). The quantitative dosing piston assembly (2) is connected with the spray head shell body (1) and the power wrench (4); the power wrench (4) is connected with the lower left side of the spray head shell body (1); the atomizing nozzle assembly (3) is clamped at the left end of the spray head shell body (1); the liquid guide pipe (5) is embedded in the lower inner side of the spray head shell body (1) through the dosing bottle connecting cap (6); the dosing bottle connecting cap (6) is integrally arranged at the lower part of the spray head shell body (1); the quantitative storage cavity (7) is arranged at the middle part of the inner side of the spray head shell body (1); the pollution prevention protection cavity assembly (8) is arranged at the upper left side of the inner side of the spray head shell body (1); the conduction pipe cavity (9) is arranged at the upper left side of the inner side of the spray head shell body (1); and the fixed hanging ring (10) is embedded at the upper right side of the upper part of the spray head shell body (1).

2. The metered dose spray head for post-operative care of the nasal cavity of claim 1, wherein, The quantitative dosing piston assembly (2) comprises a piston cylinder (21), a spring pump pipe (22), an inner piston pad (23), an outer piston pad (24) and a driving spring (25); the piston cylinder (21) is inserted into the left side of the spring pump pipe (22) and connected with the outer piston pad (24); the outer piston pad (24) is filled in the right side of the spring pump pipe (22); and the driving spring (25) is filled in the spring pump pipe (22) between the inner piston pad (23) and the outer piston pad (24).

3. The metered dose spray head for post-operative care of the nasal cavity of claim 1, wherein, The atomizing nozzle assembly (3) comprises an atomizing nozzle head (31), a vortex diffusion cover (32), a gas guide cavity (33), a liquid flow cavity (34) and a connecting clamping hole (35); the vortex diffusion cover (32) is threadedly connected with the inner top of the atomizing nozzle head (31); the gas guide cavity (33) is arranged at the middle part of the atomizing nozzle head (31); the liquid flow cavity (34) is arranged in the inner side of the atomizing nozzle head (31); and the connecting clamping hole (35) is arranged at the bottom and the left and right sides of the atomizing nozzle head (31).

4. The metered dose spray head for post-operative care of the nasal cavity of claim 3, wherein, The inner surface of the vortex diffusion cover (32) is annularly embedded with a diffusion impact cone head (321); and the diffusion impact cone head (321) is in the shape of a cone head.

5. The metered dose spray head for post-operative care of the nasal cavity of claim 1, wherein, The lower part of the quantitative storage cavity (7) is embedded with an inlet one-way valve (71), and the upper part of the quantitative storage cavity (7) is embedded with an outlet one-way valve (72).

6. The metered dose spray head for post-operative care of the nasal cavity of claim 1, wherein, The anti-fouling protection cavity assembly (8) comprises a disposable transparent sterile sheath (81), a sheath storage cavity (82), a sliding cover (83) and a disinfecting cotton (84), the disposable transparent sterile sheath (81) is filled in the inside of the sheath storage cavity (82); the sliding cover (83) is slidably buckled to the upper part of the sheath storage cavity (82); and the disinfecting cotton (84) is laid on the bottom of the sheath storage cavity (82).

7. The metered dose spray head for post-operative care of the nasal cavity of claim 6, wherein, The sheath storage cavity (82) is arranged on the upper left side of the nozzle shell body (1); and the disposable transparent sterile sheath (81) is sleeved on the lower side of the atomizing nozzle assembly (3).

8. The metered dose spray head for post-operative care of the nasal cavity of claim 3, wherein, The air guide cavity (33) is arranged on the inside of the liquid flow cavity (34) and is connected to the top end; the air guide cavity (33) is in the shape of an upper-narrow lower-wide horn; the atomizing nozzle head (31) is in the shape of an inverted trapezoid, is clamped to the left end of the nozzle shell body (1) and is connected to the inside of the conducting pipe cavity (9).

9. The metered dose spray head for post-operative care of the nasal cavity of claim 2, wherein, The spring pump pipe (22) is embedded in the inside of the nozzle shell body (1) and is connected to the inside of the quantitative storage cavity (7).

10. The metered dose spray head for post-operative care of the nasal cavity of claim 1, wherein, The liquid guide pipe (5), the quantitative storage cavity (7) and the conducting pipe cavity (9) are connected; the volume of the quantitative storage cavity (7) can be designed as any one of 0.05 mL, 0.1 mL or 0.15 mL according to clinical needs.

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