Paranasal sinus cleaning and dosing integrated device

Abstract

The invention discloses a paranasal sinus cleaning and dosing integrated device, which relates to the technical field of medical instruments and comprises an operation gun which comprises a gun handle and a gun body which are integrally formed. The device has the advantages that the nasal cavity washing function and the local drug delivery function are highly integrated, and controllable washing is achieved through the manual reciprocating pump; through various replaceable administration units (top / side, powder / liquid), the clinical requirements of different focus positions and medicine dosage forms are met; especially, through the cooperation of the flexible attaching piece on the side face of the nasal plug and the extending frame, stable face supporting can be provided for the device in the dosing process, the dosing precision and repeatability are greatly improved, mistaken touch damage to the interior of the nasal cavity, especially the postoperative wound surface is effectively avoided, operation is easy and convenient, and adaptability is high.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an integrated sinus cleaning and drug delivery device. Background Technology

[0002] Inflammatory diseases of the nasal cavity and sinuses (such as rhinitis and sinusitis) are common upper respiratory tract diseases. Nasal irrigation and topical drug administration are two important treatment methods. Nasal irrigation can remove secretions, allergens, and pathogens from the nasal cavity, while topical drug administration allows medication to act directly on the lesions, improving efficacy and reducing systemic side effects.

[0003] Currently, nasal irrigation devices (such as nasal irrigation pots) and drug delivery devices (such as sprays and drops) are usually separate in clinical practice. Nasal irrigation pots are inconvenient to operate, and the irrigation pressure is difficult to control; while traditional sprays and drops are difficult to deliver medication accurately to the deep sinus areas, especially when the patient has abnormal nasal anatomy or postoperative wounds, conventional drug delivery methods often cannot effectively cover the lesions.

[0004] Furthermore, most existing sinus drug delivery devices have a fixed angle and cannot be adjusted according to the patient's physiological structure, making it easy to accidentally touch the wound. They also struggle to achieve precise drug delivery to sinus openings that are located deep within the sinuses, such as the frontal and sphenoid sinuses. While some devices can perform both irrigation and drug delivery functions, their complex structure and cumbersome operation prevent them from simultaneously meeting multiple clinical needs, such as the administration of powder and liquid drugs, and top and side delivery. Summary of the Invention

[0005] In view of the above-mentioned problems in the prior art, the present invention is proposed.

[0006] The purpose of this invention is to provide an integrated sinus cleaning and drug delivery device, which aims to solve the problems of existing technologies such as separation of rinsing and drug delivery, inaccurate drug delivery location, easy accidental contact with wounds, and inability to adapt to various drug dosage forms and drug delivery angles.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sinus cleaning and drug delivery integrated device, including an operating gun, which includes an integrally formed gun handle and gun body;

[0008] A flushing unit is disposed inside the operating gun. The flushing unit includes a sealed cavity opened inside the gun body, a negative pressure cavity communicating with the sealed cavity, a negative pressure piston slidably disposed in the negative pressure cavity, a reciprocating assembly for driving the negative pressure piston, and one-way valves respectively disposed at the top and bottom of the sealed cavity.

[0009] A delivery tube connected to the top check valve and a suction tube connected to the bottom check valve, the end of the suction tube being used to connect to a water bottle; a nose plug fitted onto the delivery tube.

[0010] An extension frame connecting the gun body and the nose plug or delivery tube; and,

[0011] A drug delivery unit that is detachably connected to the proximal end of the delivery tube.

[0012] As a preferred embodiment of the sinus cleaning and drug delivery integrated device of the present invention, wherein: the side of the nasal plug is provided with a flexible adhesive patch for fitting the peripheral area of ​​the philtrum.

[0013] As a preferred embodiment of the sinus cleaning and drug delivery integrated device of the present invention, the drug delivery unit is a top powder feeding component, which includes a first drug delivery tube threadedly connected to the liquid delivery tube, the first drug delivery tube is provided with a first drug delivery chamber and a first powder hopper, the first powder hopper and the first drug delivery chamber are connected through a first through hole, and a first sealing plug for sealing the first through hole is inserted into the top of the first drug delivery chamber.

[0014] As a preferred embodiment of the sinus cleaning and drug delivery integrated device of the present invention, the drug delivery unit is a side powder feeding component, which includes a third drug delivery tube threadedly connected to the liquid delivery tube. The third drug delivery tube is provided with a third drug delivery chamber and a third powder hopper. The outlet of the third drug delivery chamber is opened on the side of the third drug delivery tube. The third powder hopper and the third drug delivery chamber are connected through a third through hole, and a third sealing plug for sealing the third through hole is inserted into the top of the third drug delivery chamber.

[0015] As a preferred embodiment of the sinus cleaning and drug delivery integrated device of the present invention, the drug delivery unit is a top liquid feeding component, which includes a second drug delivery tube threadedly connected to the liquid delivery tube, a conical second drug delivery chamber is provided in the second drug delivery tube, a first drug squeezing piston is slidably sealed in the second drug delivery chamber, and a second sealing plug is inserted into the top of the second drug delivery chamber.

[0016] As a preferred embodiment of the sinus cleaning and drug delivery integrated device of the present invention, the drug delivery unit is a side liquid feeding component, which includes a fourth drug delivery tube threadedly connected to the liquid delivery tube, the fourth drug delivery tube is provided with a conical fourth drug delivery chamber, the outlet of the fourth drug delivery chamber is opened on the side of the fourth drug delivery tube, a second drug extrusion piston is slidably sealed in the fourth drug delivery chamber, and a fourth sealing plug is inserted into the top of the fourth drug delivery chamber.

[0017] As a preferred embodiment of the sinus cleaning and drug delivery integrated device of the present invention, the reciprocating assembly includes a rotating plate rotatably connected to the gun handle, a connecting rod fixed to the negative pressure piston, and a connecting rod whose two ends are respectively rotatably connected to the rotating plate and the connecting rod; a spring is provided between the negative pressure piston and the inner wall of the negative pressure chamber.

[0018] In a preferred embodiment of the sinus cleaning and drug delivery integrated device of the present invention, when the nasal plug is inserted into the nostril and the flexible adhesive patch is attached, the main body of the operating gun is located below the user's chin.

[0019] The beneficial effects of the sinus irrigation and drug delivery integrated device of the present invention are as follows: it highly integrates nasal irrigation and local drug delivery functions, and achieves controllable irrigation through a manual reciprocating pump; it meets the clinical needs of different lesion locations and drug dosage forms through a variety of replaceable drug delivery units (top / side, powder / liquid); in particular, through the cooperation of the flexible adhesive patch on the side of the nasal plug and the extension frame, it can provide stable facial support for the device during drug delivery, which greatly improves the accuracy and repeatability of drug delivery, effectively avoids accidental damage to the inside of the nasal cavity, especially the postoperative wound, and is easy to operate and highly adaptable. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a cross-sectional view of the structure of the operating gun in this invention.

[0023] Figure 3 This is a schematic diagram of the nasal plug structure in this invention.

[0024] Figure 4 This is a cross-sectional view of the top powder feeder in Embodiment 3 of the present invention.

[0025] Figure 5 This is a cross-sectional view of the top liquid feeder in Embodiment 5 of the present invention.

[0026] Figure 6 This is a cross-sectional view of the side powder feeder in Embodiment 4 of the present invention.

[0027] Figure 7 This is a cross-sectional view of the side liquid feeding component in Embodiment 6 of the present invention.

[0028] In the diagram: 100, Operating gun; 110, Gun handle; 120, Gun body; 200, Flushing unit; 210, Sealing chamber; 220, Negative pressure chamber; 230, One-way valve; 240, Negative pressure piston; 250, Reciprocating assembly; 251, Rotating plate; 252, Connecting rod; 253, Connecting rod; 254, Spring; 260, Liquid delivery tube; 270, Liquid extraction tube; 280, Water bottle; 290, Nasal plug; 300, Extension frame; 400, Drug delivery unit; 410, Top powder feeding component; 411, First drug delivery tube; 412, First drug delivery chamber; 413, First powder hopper; 414. First through hole; 415. First sealing plug; 420. Top liquid feeder; 421. Second drug delivery pipe; 422. Second drug delivery chamber; 423. First extrusion piston; 424. Second sealing plug; 430. Side powder feeder; 431. Third drug delivery pipe; 432. Third drug delivery chamber; 433. Third powder hopper; 434. Third through hole; 435. Third sealing plug; 440. Side liquid feeder; 441. Fourth drug delivery pipe; 442. Fourth drug delivery chamber; 443. Second extrusion piston; 444. Fourth sealing plug; 500. Flexible bonding sheet. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0032] Example 1:

[0033] Reference Figures 1 to 2 This is the first embodiment of the present invention. This embodiment provides an integrated sinus cleaning and drug delivery device, including an operating gun 100, which includes an integrally formed gun handle 110 and a gun body 120.

[0034] The flushing unit 200 is disposed inside the operating gun 100. The flushing unit 200 includes a sealed cavity 210 opened in the gun body 120, a negative pressure cavity 220 communicating with the sealed cavity 210, a negative pressure piston 240 slidably disposed in the negative pressure cavity 220, a reciprocating assembly 250 for driving the negative pressure piston 240, and one-way valves 230 respectively disposed at the top and bottom of the sealed cavity 210.

[0035] A liquid delivery tube 260 connected to the top one-way valve 230, and a liquid extraction tube 270 connected to the bottom one-way valve 230, the end of the liquid extraction tube 270 being used to connect to a water bottle 280; and a nose plug 290 fitted onto the liquid delivery tube 260.

[0036] An extension bracket 300 connecting the gun body 120 to the nose plug 290 or the liquid delivery tube 260; and,

[0037] The drug delivery unit 400 is detachably connected to the proximal end of the delivery tube 260.

[0038] It should be noted that the operating gun 100 is made of medical-grade plastic through one-piece injection molding, including a handle 110 for easy gripping and a gun body 120 with an internal chamber, which has a robust structure and good sealing performance.

[0039] A sealing cavity 210 is machined inside the gun body 120, and a negative pressure cavity 220 communicating with the sealing cavity 210 is machined inside the gun handle 110. A one-way valve 230 is installed at the top and bottom of the sealing cavity 210. The one-way valve 230 at the top allows fluid to flow upward, and the one-way valve 230 at the bottom allows fluid to be drawn in from the bottom. A negative pressure piston 240 is slidably and sealingly disposed in the negative pressure cavity 220. A liquid delivery pipe 260 is connected to the outlet of the top one-way valve 230, and a liquid extraction pipe 270 is connected to the inlet of the bottom one-way valve 230. A threaded interface is provided at the bottom of the gun handle 110 for sealingly screwing a water bottle 280 containing cleaning fluid such as saline solution.

[0040] The nasal plug 290 is made of medical-grade silicone and is fitted onto the distal outer wall of the infusion tube 260;

[0041] It should be noted that the nasal plug 290 is a disposable product, and in order to meet the needs of different nostrils (adults and children have different nostril sizes and shapes), the appropriate nasal plug 290 can be selected according to the actual situation.

[0042] The extension frame 300 is fixed at one end to the gun body 120 and at the other end to the base of the nasal plug 290. Its length is designed so that when the device is in normal use, the main body of the operating gun 100 is below the patient's chin, which does not obstruct the view and is comfortable to hold;

[0043] Drug delivery unit 400 Figure 1As shown in the example, the top powder feeder 410 is connected to the proximal end of the liquid delivery tube 260 by a thread and can be replaced as needed for treatment.

[0044] The reciprocating assembly 250 includes a rotating plate 251 rotatably connected to the gun handle 110, a connecting rod 252 fixed to the negative pressure piston 240, and a connecting rod 253 whose two ends are rotatably connected to the rotating plate 251 and the connecting rod 252 respectively; a spring 254 is provided between the negative pressure piston 240 and the inner wall of the negative pressure chamber 220.

[0045] It should be noted that the reciprocating assembly 250 is used to drive the negative pressure piston 240, including a rotating plate 251 similar to a trigger that is rotatably connected to the gun handle 110 via a rotating shaft, a connecting rod 252 fixedly connected to the right side of the negative pressure piston 240, and a connecting rod 253 whose two ends are rotatably connected to one end of the rotating plate 251 and one end of the connecting rod 252, respectively. A spring 254 is connected between the negative pressure chamber 220 and the negative pressure piston 240.

[0046] The output pressure of the delivery tube 260 is affected by the frequency of the reciprocating component 250. A higher frequency results in a higher pressure, while a lower frequency results in a lower pressure. When cleaning, the frequency can be increased appropriately to provide flushing pressure within the range that the nasal cavity can tolerate. When administering medication, the frequency is reduced to improve the accuracy of medication administration.

[0047] Working principle:

[0048] In the initial non-pressed state, the spring 254 is in a naturally expanded state, pushing the negative pressure piston 240 to the end of the negative pressure chamber 220 near the sealing chamber 210. At this time, the internal volume of the sealing chamber 210 and the negative pressure chamber 220 is relatively small.

[0049] When the user presses the rotating plate 251 with their finger, the rotating plate 251 rotates, which pushes the connecting rod 252 to move through the connecting rod 253. The connecting rod 252 drives the negative pressure piston 240 to move towards one end of the sealing cavity 210 against the elastic force of the spring 254. At this time, the volume of the negative pressure cavity 220 and the sealing cavity 210 increases, and negative pressure is generated inside. Under the action of this negative pressure, the bottom one-way valve 230 opens and the top one-way valve 230 closes. The cleaning fluid in the water bottle 280 is sucked into the sealing cavity 210 and the negative pressure cavity 220 through the suction tube 270.

[0050] When the rotating plate 251 is released, the negative pressure piston 240 is pushed back under the restoring force of the spring 254. At this time, the pressure in the sealing chamber 210 and the negative pressure chamber 220 increases, the bottom one-way valve 230 closes, the top one-way valve 230 opens, and the cleaning fluid stored in the chamber is forced into the delivery pipe 260 and finally sprayed out from the outlet at the front end of the nasal plug 290.

[0051] Users can generate a continuous and controllable pulsed flushing fluid flow to rinse the nasal cavity by repeatedly pressing and releasing the rotating plate 251.

[0052] During rinsing, insert the nasal plug 290 into one nostril and seal it slightly. The rinsing solution will fill the nasal cavity and sinuses, and then flow out from the other nostril or mouth while tilting your head down to remove secretions.

[0053] Example 2

[0054] like Figures 1 to 3 As shown, based on Embodiment 1, as an optional embodiment: the side of the nasal plug 290 is provided with a flexible fitting piece 500 for fitting the peripheral area of ​​the philtrum;

[0055] When the nasal plug 290 is inserted into the nostril and the flexible adhesive patch 500 is attached, the main body of the operating gun 100 is located below the user's chin.

[0056] It should be noted that the main body of the nasal plug 290 is a cylindrical silicone sleeve suitable for insertion into the nostril. On the outer wall of the nasal plug 290, there is an integrally formed soft flexible fitting sheet 500, preferably made of medical silicone or flexible plastic sheet, whose shape conforms to the contour of the area below the nostril and above the lips, i.e. the outer edge of the philtrum.

[0057] During drug delivery, after inserting the nasal plug 290 into one nostril, the flexible patch 500 can be gently pressed to adhere to the facial skin, creating a third stable fulcrum. The other two fulcrums are the handheld operating gun 100 and the nasal plug 290 inserted into the nostril, which greatly enhances the stability of the entire device during drug delivery. A stable device means that the angle and depth of the delivery tube 260 connected to the drug delivery unit 400 at this time are not easily changed during operation, thereby ensuring that the drug can be accurately and repeatedly delivered to the expected sinus area. Stability is especially important for scenarios that require lateral drug delivery.

[0058] Example 3

[0059] like Figures 1 to 3 and Figure 4 As shown, based on Embodiment 1, as an optional embodiment: the drug delivery unit 400 is a top powder feeding component 410, which includes a first drug delivery tube 411 threadedly connected to the liquid delivery tube 260. The first drug delivery tube 411 is provided with a first drug delivery chamber 412 and a first powder hopper 413. The first powder hopper 413 and the first drug delivery chamber 412 are connected through a first through hole 414, and a first sealing plug 415 for sealing the first through hole 414 is inserted into the top of the first drug delivery chamber 412.

[0060] It should be noted that the lower end of the first drug delivery tube 411 is provided with an internal thread, which is connected to the external thread at the top of the liquid delivery tube 260. The first drug delivery tube 411 has a first drug delivery chamber 412 axially formed inside. The first powder hopper 413 is connected to the first drug delivery chamber 412 through multiple first through holes 414. The top of the first drug delivery chamber 412 is open and a first sealing plug 415 is inserted. When the first sealing plug 415 is fully inserted, its lower end just blocks the first through hole 414, isolating the first powder hopper 413 from the first drug delivery chamber 412.

[0061] Working principle: After rinsing, remove the water bottle 280 and press the reciprocating assembly 250 several times to drain the residual liquid in the delivery tube 260. Then, tighten the top powder feeder 410 onto the delivery tube 260. Before administering the medication, completely remove the first sealing plug 415 to open the first through-hole 414. The user presses the reciprocating assembly 250, causing the gas (not liquid) inside the operating gun 100 to flow through the delivery tube 260 and into the first medication delivery chamber 412. This draws the powdered medication from the first through-hole 414 and blows it out from the top outlet of the first medication delivery tube 411, forming a powder mist that is sprayed into the nasal cavity. Multiple first through-holes 414 help ensure smooth medication delivery and prevent bridging or clumping within the chamber.

[0062] Example 4

[0063] like Figures 1 to 3 and Figure 6 As shown, based on Embodiment 1, as an optional embodiment: the drug delivery unit 400 is a side powder feeding component 430, which includes a third drug delivery tube 431 threadedly connected to the liquid delivery tube 260. The third drug delivery tube 431 is provided with a third drug delivery chamber 432 and a third powder hopper 433. The outlet of the third drug delivery chamber 432 is opened on the side of the third drug delivery tube 431. The third powder hopper 433 and the third drug delivery chamber 432 are connected through a third through hole 434, and a third sealing plug 435 for sealing the third through hole 434 is inserted into the top of the third drug delivery chamber 432.

[0064] It should be noted that the third delivery tube 431 has a third delivery chamber 432 and a third powder hopper 433 inside, which are connected by a third through hole 434. Unlike the top powder feeder 410, the top outlet of the third delivery chamber 432 is not located at the end of the tube, but is located on the side of the third delivery tube 431. The third sealing plug 435 is inserted into the top of the third delivery chamber 432.

[0065] Working principle: It is suitable for situations where medication needs to be administered to the nasal cavity sidewall or the sinus opening on the upper side, such as the ethmoid sinus. The medication is sprayed out from the side outlet, which has a stronger directionality. The operation process is similar to that in Example 3. After pulling out the third sealing plug 435, press the reciprocating component 250, and the gas will blow the powder out from the side outlet.

[0066] Example 5

[0067] like Figures 1 to 3 and Figure 5 As shown, based on Embodiment 1, as an optional embodiment: the drug delivery unit 400 is a top liquid feeding component 420, which includes a second drug delivery tube 421 threadedly connected to the liquid delivery tube 260. The second drug delivery tube 421 is provided with a conical second drug delivery chamber 422. A first drug squeezing piston 423 is slidably and sealed in the second drug delivery chamber 422, and a second sealing plug 424 is inserted into the top of the second drug delivery chamber 422.

[0068] It should be noted that the lower end of the second drug delivery tube 421 is also connected to the liquid delivery tube 260 by a thread. The second drug delivery tube 421 is provided with a tapered second drug delivery chamber 422 that is smaller at the top and larger at the bottom. A first extrusion piston 423 is provided in the second drug delivery chamber 422 and slides and seals with it. A second sealing plug 424 is inserted into the top of the second drug delivery chamber 422.

[0069] Working principle: Before use, the second drug delivery chamber 422 is pre-filled with liquid or gel-like drugs. The first drug extrusion piston 423 is located below the drugs. After connecting it to the liquid delivery tube 260, the second sealing plug 424 is pulled out and the reciprocating assembly 250 is pressed. The gas pressure pushes the first drug extrusion piston 423 to move upward, and the drugs are evenly extruded from the top outlet of the second drug delivery tube 421.

[0070] Example 6

[0071] like Figures 1 to 3 and Figure 7 As shown, based on Embodiment 1, as an optional embodiment: the drug delivery unit 400 is a side liquid feeding component 440, which includes a fourth drug delivery tube 441 threadedly connected to the liquid delivery tube 260. The fourth drug delivery tube 441 is provided with a conical fourth drug delivery chamber 442. The outlet of the fourth drug delivery chamber 442 is opened on the side of the fourth drug delivery tube 441. A second drug extrusion piston 443 is slidably sealed in the fourth drug delivery chamber 442, and a fourth sealing plug 444 is inserted into the top of the fourth drug delivery chamber 442.

[0072] It should be noted that the fourth drug delivery tube 441 has a conical fourth drug delivery chamber 442 inside, and its top outlet is also opened on the side of the fourth drug delivery tube 441. The second extrusion piston 443 is slidably sealed inside the fourth drug delivery chamber 442, and the fourth sealing plug 444 is inserted into its top.

[0073] Working principle: Used for lateral delivery of liquid or gel drugs. The operation process is similar to that in Example 5. Gas pressure pushes the second extrusion piston 443 to extrude the drug from the lateral outlet.

[0074] When using dual modes:

[0075] Rinse mode: Screw the water bottle 280 containing cleaning solution onto the bottom of the gun handle 110, select the no-drug unit 400, insert the nasal plug 290 into one nostril, and repeatedly press and release the rotating plate 251 to rinse the nasal cavity.

[0076] Drug delivery mode: After rinsing, remove the water bottle 280, press the empty button several times to drain the water from the pipeline, and select the appropriate drug delivery unit 400 top powder feeder 410, top liquid feeder 420, side powder feeder 430, and side liquid feeder 440 according to the doctor's order and the location of the lesion, and screw them onto the liquid delivery tube 260.

[0077] Insert the nasal plug 290 into the nostril and gently press the flexible patch 500 onto the face. Press the rotating plate 251 to deliver the drug powder or liquid using gas. After administration, quickly flush the tubing with cleaning solution to prevent drug residue from clogging the tube.

[0078] Importantly, the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sinus cleaning and drug delivery integrated device, characterized in that: include, Operating gun (100), which includes an integrally formed gun handle (110) and gun body (120). A flushing unit (200) is disposed inside the operating gun (100). The flushing unit (200) includes a sealed cavity (210) opened in the gun body (120), a negative pressure cavity (220) communicating with the sealed cavity (210), a negative pressure piston (240) slidably disposed in the negative pressure cavity (220), a reciprocating assembly (250) driving the negative pressure piston (240), and one-way valves (230) respectively disposed at the top and bottom of the sealed cavity (210). A delivery tube (260) connected to the top check valve (230) and a suction tube (270) connected to the bottom check valve (230), the end of the suction tube (270) being used to connect to a water bottle (280); and a nose plug (290) fitted onto the delivery tube (260). An extension bracket (300) connecting the gun body (120) to the nose plug (290) or the liquid delivery tube (260); and, A drug delivery unit (400) is detachably connected to the proximal end of the delivery tube (260).

2. The integrated sinus irrigation and drug delivery device as described in claim 1, characterized in that: The nasal plug (290) has a flexible adhesive patch (500) on its side for fitting the peripheral area of ​​the philtrum.

3. The integrated sinus cleaning and drug delivery device as described in claim 2, characterized in that: The drug delivery unit (400) is a top powder feeding component (410), which includes a first drug delivery tube (411) threadedly connected to the liquid delivery tube (260). The first drug delivery tube (411) is provided with a first drug delivery chamber (412) and a first powder hopper (413). The first powder hopper (413) is connected to the first drug delivery chamber (412) through a first through hole (414), and a first sealing plug (415) for sealing the first through hole (414) is inserted into the top of the first drug delivery chamber (412).

4. The integrated sinus cleaning and drug delivery device as described in claim 2, characterized in that: The drug delivery unit (400) is a side-mounted powder feeding component (430), which includes a third drug delivery tube (431) threadedly connected to the liquid delivery tube (260). The third drug delivery tube (431) is provided with a third drug delivery chamber (432) and a third powder hopper (433). The outlet of the third drug delivery chamber (432) is located on the side of the third drug delivery tube (431). The third powder hopper (433) is connected to the third drug delivery chamber (432) through a third through hole (434), and a third sealing plug (435) for sealing the third through hole (434) is inserted into the top of the third drug delivery chamber (432).

5. The integrated sinus cleaning and drug delivery device as described in claim 2, characterized in that: The drug delivery unit (400) is a top liquid feeding component (420), which includes a second drug delivery tube (421) threadedly connected to the liquid delivery tube (260). The second drug delivery tube (421) is provided with a conical second drug delivery chamber (422). A first drug extrusion piston (423) is slidably sealed in the second drug delivery chamber (422), and a second sealing plug (424) is inserted into the top of the second drug delivery chamber (422).

6. The integrated sinus irrigation and drug delivery device as described in claim 2, characterized in that: The drug delivery unit (400) is a side liquid feeding component (440), which includes a fourth drug delivery tube (441) threadedly connected to the liquid delivery tube (260). The fourth drug delivery tube (441) is provided with a conical fourth drug delivery chamber (442). The outlet of the fourth drug delivery chamber (442) is opened on the side of the fourth drug delivery tube (441). A second drug extrusion piston (443) is slidably sealed in the fourth drug delivery chamber (442), and a fourth sealing plug (444) is inserted into the top of the fourth drug delivery chamber (442).

7. The integrated sinus irrigation and drug delivery device as described in claim 1, characterized in that: The reciprocating assembly (250) includes a rotating plate (251) rotatably connected to the gun handle (110), a connecting rod (252) fixed to the negative pressure piston (240), and a connecting rod (253) whose two ends are rotatably connected to the rotating plate (251) and the connecting rod (252) respectively; a spring (254) is provided between the negative pressure piston (240) and the inner wall of the negative pressure chamber (220).

8. The integrated sinus cleaning and drug delivery device as described in claim 2, characterized in that: When the nasal plug (290) is inserted into the nostril and the flexible adhesive patch (500) is attached, the main body of the operating gun (100) is located below the user's chin.

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