A directional rotating spray head for deep nasal cavity

Abstract

This invention relates to the field of drug delivery device technology, and in particular to a directional rotating spray head for deep nasal cavity, comprising: a metering spray assembly including a base, a metering chamber opened inside the base, a hydraulic chamber opened in the middle side wall of the metering chamber, a plug disposed inside the hydraulic chamber, a first valve disposed at the bottom port of the metering chamber, and a second valve disposed at the top port of the metering chamber; a lifting drive assembly including an outer cylinder rotatably disposed on the top of the base, a nozzle axially slidably disposed at the end of the outer cylinder, and a riser disposed between the second valve and the nozzle; and a directional rotating assembly including a pusher disposed on the outer wall of the riser, a guide groove opened on the inner circumferential surface of the outer cylinder, and a guide slider disposed on the outer wall of the pusher and located inside the guide groove; the nozzle is located inside the outer cylinder when not in operation and extends and rotates synchronously during spraying, realizing coordinated control of nozzle protection and directional spraying, and improving the overall stability and controllability of the spraying process.

Description

Technical Field

[0001] This invention relates to the field of drug delivery devices, and in particular to a directional rotating spray head for use deep in the nasal cavity. Background Technology

[0002] In the field of medical drug delivery devices, nasal sprays are a common type of drug delivery device, widely used to deliver liquid medications in atomized form into the nasal cavity to achieve local action or drug delivery through mucosal absorption. Existing nasal spray devices typically include a reservoir, a press-type pump mechanism, and a nozzle located at the front end, which atomizes and sprays the medication by pressing.

[0003] Currently, most nasal spray devices use a fixed nozzle structure. First, when a fixed nozzle is inserted deep into the nasal cavity, it is easy for it to come into direct contact with the nasal cavity wall. Since there are secretions and mucus inside the nasal cavity, the nozzle is easily covered by mucus during insertion, which can cause the nozzle to become blocked or poorly atomized, thus affecting the stability of the subsequent spray effect. Second, the spray direction of a fixed nozzle is usually fixed or relies on manual adjustment, making it difficult to achieve precise pointing in the narrow space deep inside the nasal cavity. Furthermore, it is difficult to ensure that the spray angle is consistent every time during actual use, resulting in uneven distribution of the medication. Summary of the Invention

[0004] In view of the problems in the above or existing technologies, such as the nozzle being easily contaminated and clogged by mucus during insertion and the spray direction being difficult to achieve stable and controllable during spraying, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a directional rotating spray head for use deep in the nasal cavity.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A directional rotating spray nozzle for deep nasal cavity, comprising:

[0008] A metering spray assembly includes a base, a metering chamber formed inside the base, a hydraulic chamber formed in the middle side wall of the metering chamber, a plug disposed inside the hydraulic chamber, a first valve disposed at the bottom port of the metering chamber, and a second valve disposed at the top port of the metering chamber.

[0009] The lifting drive assembly includes an outer cylinder rotatably disposed on the top of the base, a nozzle axially slidably disposed at the end of the outer cylinder, and a riser disposed between the second valve and the nozzle;

[0010] The directional rotation assembly includes a pusher platform disposed on the outer wall of the riser, a guide groove formed on the inner circumferential surface of the outer cylinder, and a guide slider disposed on the outer wall of the pusher platform and located inside the guide groove.

[0011] In this process, the second valve moves upward during the pumping phase of the metering spray assembly and drives the nozzle to extend out of the outer cylinder during the pumping phase via the riser. Simultaneously, the riser drives the outer cylinder to rotate at a predetermined angle via the pusher, thereby causing the nozzle to rotate synchronously.

[0012] As a preferred embodiment of the present invention for a directional rotating spray head for deep nasal cavity, wherein: the outer end of the plunger is provided with a pull rod that passes laterally through the base, the pull rod and the base are sealed and slidably connected, the end of the pull rod is provided with a thumb groove, and the bottom of the base is provided with a connecting cover.

[0013] As a preferred embodiment of the present invention for a directional rotating spray head deep in the nasal cavity, wherein: the first valve includes a sealing ball disposed at the bottom port of the metering chamber, a positioning frame disposed on the inner wall of the metering chamber and located above the sealing ball, a supporting spring is disposed between the top of the sealing ball and the bottom surface of the positioning frame, and the bottom port of the metering chamber is a tapered structure with the tip pointing downwards.

[0014] As a preferred embodiment of the present invention for a directional rotating spray head deep in the nasal cavity, the second valve includes an isolation chamber disposed at the top port of the metering chamber, a transfer chamber disposed on the outer periphery of the isolation chamber, and a piston disposed inside the upper end of the metering chamber. The transfer chamber is connected to the metering chamber and the through hole respectively and has a connecting hole. The side wall of the piston is provided with a through hole connected to its bottom surface. When the top surface of the piston is in contact with the bottom surface of the isolation chamber, the piston coincides with the connecting hole.

[0015] As a preferred embodiment of the present invention for a directional rotating spray head for deep nasal cavity, wherein: the retaining ring has a sleeve hole in the middle for the riser tube to pass through, the sleeve hole and the riser tube are sealed and slidably connected, the riser tube and the sleeve hole are circumferentially engaged, the bottom end side wall of the riser tube has a through hole, and the hole is located inside the isolation cavity when the top surface of the piston is in contact with the bottom surface of the isolation cavity.

[0016] As a preferred embodiment of the present invention for a directional rotating spray head deep in the nasal cavity, wherein: a retaining ring is provided on the inner wall of the metering chamber and above the hydraulic chamber; the retaining ring is shaped as a hollow frustum with its tip pointing upwards; the upper diameter of the metering chamber is smaller than its lower diameter; and the piston slides and fits against the upper inner wall of the metering chamber and is located above the retaining ring.

[0017] As a preferred embodiment of the present invention for a directional rotating spray head for deep nasal cavity, wherein: an atomizing port is provided on the upper side wall of the spray head, a rotating seat connected to the spray head is rotatably provided at the end of the riser, the riser and the atomizing port are interconnected, a limiting groove is axially formed on the inner wall of the outer cylinder, a limiting slider is provided on the outer wall of the spray head, and the limiting slider is located inside the limiting groove and slides in contact with it.

[0018] As a preferred embodiment of the present invention for a directional rotating spray head for deep nasal cavity, wherein: a support ring is provided on the inner wall of the middle part of the outer cylinder, a return spring is provided between the top surface of the push platform and the bottom surface of the support ring, and the return spring is wound around the outer surface of the riser.

[0019] As a preferred embodiment of the present invention for a directional rotating spray head for deep nasal cavity, wherein: the guide groove has a continuous "V" shaped profile, and the top end point of the guide groove is offset from its bottom end point; a limiting ring is provided on the bottom inner edge of the outer cylinder; an annular groove is provided on the top outer edge of the base; and the limiting rings are located inside the annular groove and slide against each other.

[0020] As a preferred embodiment of the present invention for a directional rotating spray head for deep nasal cavity, wherein: a flexible pad is provided at the end of the outer cylinder, a retaining ring is provided on the bottom surface of the flexible pad, a slot is provided on the end face of the outer cylinder, and the retaining ring and the slot are detachably connected.

[0021] The beneficial effects of the directional rotating spray head for deep nasal cavity of the present invention are as follows: The present invention, through the cooperation of the metering spray component, the lifting drive component and the directional rotation component, enables the spray head to be inside the outer cylinder when not in operation and to extend and rotate synchronously during spraying, thereby achieving coordinated control of spray head protection and directional spraying in structure, and improving the overall stability and controllability of the spraying process.

[0022] By making the nozzle retractable and housed inside the outer cylinder, direct contact between the nozzle and mucus is avoided during insertion into the nasal cavity, thus reducing the possibility of nozzle contamination or clogging and improving spray flow. Through the cooperation of the guide slide and the pusher, the nozzle angle changes synchronously during extension, thereby achieving dynamic adjustment of direction during spraying and improving the controllability of coverage. By unifying the nozzle extension, outer cylinder rotation, and liquid pumping actions into the same drive process, multiple actions are completed simultaneously, thereby reducing operation steps and improving the coordination and repeatability of the usage process. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the 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.

[0024] Figure 1 This is a schematic diagram of the overall structure of a directional rotating spray head used deep within the nasal cavity.

[0025] Figure 2 This is a schematic diagram of the nozzle structure for a directional rotating spray head used deep within the nasal cavity.

[0026] Figure 3 This is a schematic diagram of the outer cylinder structure of a directional rotating spray head used deep in the nasal cavity.

[0027] Figure 4 This is a schematic diagram of the metering chamber structure of a directional rotating spray head used deep in the nasal cavity.

[0028] Figure 5 This is a schematic diagram of the pusher structure for a directional rotating spray head used deep in the nasal cavity.

[0029] Figure 6 This is a schematic diagram of the base structure for a directional rotating spray head used deep within the nasal cavity.

[0030] Figure 7 This is an enlarged schematic diagram of point A of a directional rotating spray nozzle used deep within the nasal cavity.

[0031] In the diagram: 1. Base; 2. Outer cylinder; 3. Nozzle; 4. Flexible pad; 5. Pull rod; 6. Connecting cover; 7. Riser; 8. Push platform; 9. Metering chamber; 10. Slot; 11. Guide groove; 12. Limiting ring; 13. Support ring; 14. Limiting groove; 15. Limiting slider; 16. Ring groove; 17. Hydraulic chamber; 18. Plug; 19. Rotating seat; 20. Return spring; 21. Guide slider; 22. Piston; 23. Through hole; 24. Round hole; 25. Thumb groove; 26. Sealing ball; 27. Support spring; 28. Positioning frame; 29. ​​Transfer chamber; 30. Isolation chamber; 31. Sleeve hole; 32. Connecting hole; 33. Snap ring; 34. Retaining ring; 35. Atomizing port. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] Secondly, the term "one 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 in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figures 1 to 7 This is the first embodiment of the present invention, which provides a directional rotating spray head for deep nasal cavity, comprising a metering spray assembly, a lifting drive assembly, and a directional rotating assembly.

[0037] Specifically, the metering spray assembly includes a base 1, a metering chamber 9 inside the base 1, a hydraulic chamber 17 on the middle side wall of the metering chamber 9, a plunger 18 inside the hydraulic chamber 17, a first valve at the bottom port of the metering chamber 9, and a second valve at the top port of the metering chamber 9. The outer end of the plunger 18 is provided with a pull rod 5 that passes laterally through the base 1. The pull rod 5 is in a sealed sliding connection with the base 1. The end of the pull rod 5 is provided with a thumb groove 25. The bottom of the base 1 is provided with a connecting cover 6.

[0038] The metering chamber 9 limits the volume of liquid output per cycle to ensure stable injection volume. The hydraulic chamber 17 is used to create pressure changes under the drive of the plunger 18 to drive liquid flow. The first valve is used to control the liquid to enter the metering chamber 9 unidirectionally from the storage end. The second valve is used to control the liquid to be output upward from the metering chamber 9 and prevent backflow. The pull rod 5 converts the pushing and pulling force of the hand into the linear motion of the plunger 18. The pull rod 5 and the base 1 are sealed and slidingly connected to prevent the medium in the hydraulic chamber 17 from leaking and to maintain stable pressure. The thumb groove 25 improves the stability during pushing and pulling. The connecting cover 6 is used to connect with the storage container to form a liquid supply path.

[0039] The lifting drive assembly includes an outer cylinder 2 rotatably mounted on the top of the base 1, a nozzle 3 axially slidably mounted on the end of the outer cylinder 2, and a riser 7 disposed between the second valve and the nozzle 3. The nozzle 3 is used to atomize and output liquid, and the riser 7 is used to connect the liquid channel and transmit axial movement to drive the nozzle 3 to extend and retract.

[0040] The directional rotation assembly includes a pusher 8 disposed on the outer wall of the riser 7, a guide groove 11 formed on the inner circumferential surface of the outer cylinder 2, and a guide slider 21 disposed on the outer wall of the pusher 8 and located inside the guide groove 11. The pusher 8 converts the axial displacement of the riser 7 into a force that drives the outer cylinder 2 to rotate. The guide groove 11 is used to determine the rotation angle change law, and the guide slider 21 realizes stable motion transmission.

[0041] In this process, the second valve moves upward during the pumping phase of the metering spray assembly and drives the nozzle 3 to extend out of the outer cylinder 2 during the pumping phase via the riser 7. At the same time, the riser 7 drives the outer cylinder 2 to rotate at a predetermined angle via the pusher 8, thereby causing the nozzle 3 to rotate synchronously. The nozzle 3 is only exposed to the external environment during the spraying phase to reduce the possibility of it being adhered to by mucus during the insertion process. Meanwhile, the riser 7 drives the outer cylinder 2 to rotate at a predetermined angle via the pusher 8, thereby causing the nozzle 3 to rotate synchronously, so as to ensure that the spraying direction changes in a controlled manner during the spraying process.

[0042] In use, initially, the nozzle 3 is retracted inside the outer cylinder 2 and not exposed. The operator pushes the outer cylinder 2 along the nasal cavity to the target depth. During this process, the nozzle 3 does not directly contact the inner wall of the nasal cavity, thus preventing the atomizing port 35 from being covered by mucus. Then, the operator presses the lever 5, which moves the plunger 18 inward and compresses the hydraulic chamber 17 to create positive pressure. This positive pressure acts on the liquid in the metering chamber 9 and pushes it through the second valve into the riser 7. At the same time, the riser 7 moves upward under the action of the second valve, causing the nozzle 3 to move along the axis. The outer cylinder 2 extends outward, so that the nozzle 3 is exposed only when it reaches the spraying stage. During the upward movement of the riser 7, the pusher 8 drives the guide slider 21 to slide along the guide groove 11 and drive the outer cylinder 2 to rotate, so that the nozzle 3 changes direction synchronously during the extension process. After the nozzle 3 is extended, the liquid is atomized through its internal structure and sprayed out, thus forming a directional spray deep in the nasal cavity. After pressing, the pull rod 5 is pulled, and the plug 18 returns to its original position, so that the hydraulic chamber 17 forms a negative pressure and draws in new liquid. At the same time, the riser 7 moves downward, causing the nozzle 3 to be retracted into the outer cylinder 2.

[0043] In summary, this embodiment sets the nozzle 3 as a retractable storage structure, so that it is always located inside the outer cylinder 2 when not in operation, thereby avoiding being covered or blocked by nasal mucus during insertion. The single pressing action driven by the pull rod 5 simultaneously realizes liquid pumping, nozzle extension and outer cylinder rotation, so that multiple actions occur synchronously in time to reduce operation steps. The rotation trajectory is limited by the guide groove 11, so that the rotation angle of the nozzle 3 is deterministic, thereby ensuring the consistency of the spray direction, and realizing the coordinated cooperation of protection, delivery and directional spraying.

[0044] Example 2

[0045] Reference Figures 1 to 7This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a first valve and a second valve for a directional rotating spray head for deep nasal cavity.

[0046] Specifically, the first valve component includes a sealing ball 26 disposed at the bottom port of the metering chamber 9, and a positioning frame 28 disposed on the inner wall of the metering chamber 9 and located above the sealing ball 26. A support spring 27 is disposed between the top of the sealing ball 26 and the bottom surface of the positioning frame 28. The bottom port of the metering chamber 9 has a tapered structure with the tip pointing downwards. The sealing ball 26 opens or closes the liquid inlet channel under pressure. The support spring 27 pushes the sealing ball 26 to maintain a seal. The tapered structure of the metering chamber 9 improves the sealing effect of the sealing ball 26.

[0047] The second valve includes an isolation chamber 30 located at the top port of the metering chamber 9, a transfer chamber 29 located on the outer periphery of the isolation chamber 30, and a piston 22 located inside the upper end of the metering chamber 9. The transfer chamber 29 is connected to the metering chamber 9 and the through hole 23 by a connecting hole 32. The side wall of the piston 22 is provided with a through hole 23 connected to its bottom surface. When the top surface of the piston 22 is in contact with the bottom surface of the isolation chamber 30, the piston 22 coincides with the connecting hole 32. The isolation chamber 30, together with the transfer chamber 29 and the connecting hole 32, realizes the communication control between different chambers.

[0048] The retaining ring 33 has a sleeve hole 31 in the middle for the riser 7 to pass through. The sleeve hole 31 and the riser 7 are sealed and slidably connected. The riser 7 and the sleeve hole 31 are circumferentially engaged. A circular hole 24 is opened through the bottom side wall of the riser 7. When the top surface of the piston 22 is in contact with the bottom surface of the isolation chamber 30, the circular hole 24 is located inside the isolation chamber 30. The sleeve hole 31 and the riser 7 are sealed and slidably connected to ensure that the liquid does not leak.

[0049] A retaining ring 34 is provided on the inner wall of the metering chamber 9 and above the hydraulic chamber 17. The retaining ring 33 is a hollow frustum with the tip pointing upwards. The upper diameter of the metering chamber 9 is smaller than its lower diameter. The piston 22 slides against the upper inner wall of the metering chamber 9 and is located above the retaining ring 33. The retaining ring 34 is used to restrict the piston 22.

[0050] The rest of the structure is the same as in Example 1.

[0051] In use, initially, the nozzle 3 is also housed inside the outer cylinder 2 to prevent contamination by mucus during insertion into the nasal cavity. The operator inserts the device into the nasal cavity to the target position and then presses the nozzle. The plunger 18 pushes the pressure in the hydraulic chamber 17 to increase, which then acts on the liquid in the metering chamber 9. The piston 22 moves upward and gradually conforms to the bottom surface of the isolation chamber 30. When the piston 22 reaches a specific position, its through-hole 23 aligns with the connecting hole 32, thus establishing a communication path between the metering chamber 9 and the transfer chamber 29, allowing the liquid to flow freely. After passing through the transfer chamber 29, the nozzle enters the riser 7 through the round hole 24. During this process, the riser 7 moves upward and drives the nozzle 3 to extend out of the outer cylinder 2. At the same time, the outer cylinder 2 is rotated by the pusher 8 to adjust the spray direction. After pulling the lever 5, the pressure in the hydraulic chamber 17 drops, the piston 22 returns downward and the through hole 23 is misaligned with the connecting hole 32, thereby cutting off the upward flow channel. At the same time, the sealing ball 26 is pressed back against the conical port by the support spring 27 to close the bottom channel, thus forming a complete unidirectional flow control.

[0052] In summary, by opening the flow channel in sync with the extension of nozzle 3, the spraying process is made consistent with the structural movement, thereby improving the overall operational stability.

[0053] Example 3

[0054] Reference Figures 1 to 7 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a structural optimization for a directional rotating spray head for deep nasal cavity.

[0055] Specifically, the upper side wall of the nozzle 3 is provided with an atomizing port 35, and the end of the riser 7 is rotatably provided with a rotating seat 19 connected to the nozzle 3. The riser 7 and the atomizing port 35 are interconnected. The inner wall of the outer cylinder 2 is axially provided with a limiting groove 14, and the outer wall of the nozzle 3 is provided with a limiting slider 15. The limiting slider 15 is located inside the limiting groove 14 and slides in contact with it. The atomizing port 35 is used to spray out liquid to form a mist. The riser 7 will not interfere with the rotation of the nozzle 3 through the rotating seat 19. A liquid channel is formed between the riser 7 and the atomizing port 35. The limiting slider 15 cooperates with the limiting groove 14 to enable the nozzle 3 to move only axially.

[0056] A support ring 13 is provided on the inner wall of the middle part of the outer cylinder 2. A return spring 20 is provided between the top surface of the push platform 8 and the bottom surface of the support ring 13. The return spring 20 is wrapped around the outer surface of the riser 7.

[0057] The guide chute 11 has a continuous "V" shape, and the top end and bottom end of the guide chute 11 are offset from each other. The bottom inner edge of the outer cylinder 2 is provided with a limiting ring 12, and the top outer edge of the base 1 is provided with an annular groove 16. The limiting ring 12 is located inside the annular groove 16 and slides and fits against each other. The guide chute 11 has a continuous "V" shape and the upper and lower ends are offset to achieve rotation control.

[0058] Furthermore, a flexible pad 4 is provided at the end of the outer cylinder 2, and a retaining ring 33 is provided on the bottom surface of the flexible pad 4. A slot 10 is provided on the end face of the outer cylinder 2. The retaining ring 33 and the slot 10 are detachably connected. The flexible pad 4 is used to contact the nasal cavity and is detachably connected for replacement and cleaning.

[0059] The rest of the structure is the same as in Example 2.

[0060] When in use, in the non-working state, the nozzle 3 is completely housed inside the outer cylinder 2, and the flexible pad 4 at the end of the outer cylinder 2 serves as the outermost contact structure, contacting the nasal cavity. This allows the flexible material to buffer and protect the nasal tissue during insertion, preventing discomfort or damage caused by direct contact with rigid structures. When the operator pushes the device into the nasal cavity, the flexible pad 4 deforms appropriately to adapt to the shape of the nasal cavity wall, thereby improving fit and stability. When a pressing operation is performed, the riser 7 moves upward under liquid drive and drives the nozzle 3 to extend through the rotating seat 19. The rotating seat 19 provides a rotational connection during this process. During the upward movement of the nozzle 3, its limiting slider 15 slides along the limiting groove 14, thereby ensuring that the nozzle 3 extends only in a straight axial direction. At the same time, the pusher 8 drives the guide slider 21 to move along the "V"-shaped guide groove 11, causing the outer cylinder 2 to rotate in the first direction during the upward phase, thereby causing the nozzle 3 to change the spray direction.

[0061] In summary, this embodiment achieves insertion protection through the flexible pad 4, ensures stable movement through the limiting structure, avoids contamination through the storage structure, and achieves automatic recovery through the reset structure, thereby improving stability and repeatability.

[0062] It should be noted that 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 directional rotating spray nozzle for deep nasal cavity, characterized in that, include: A metering spray assembly includes a base (1), a metering chamber (9) opened inside the base (1), a hydraulic chamber (17) opened on the middle side wall of the metering chamber (9), a plug (18) disposed inside the hydraulic chamber (17), a first valve disposed at the bottom port of the metering chamber (9), and a second valve disposed at the top port of the metering chamber (9). The lifting drive assembly includes an outer cylinder (2) rotatably disposed on the top of the base (1), a nozzle (3) axially slidably disposed at the end of the outer cylinder (2), and a riser (7) disposed between the second valve and the nozzle (3). The directional rotation assembly includes a pusher (8) disposed on the outer wall of the riser (7), a guide groove (11) opened on the inner circumferential surface of the outer cylinder (2), and a guide slider (21) disposed on the outer wall of the pusher (8) and located inside the guide groove (11). In this process, the second valve moves upward during the pumping phase of the metering spray assembly and drives the nozzle (3) to extend out of the outer cylinder (2) during the pumping phase via the riser (7). At the same time, the riser (7) drives the outer cylinder (2) to rotate at a predetermined angle via the pusher (8), thereby causing the nozzle (3) to rotate synchronously.

2. The directional rotating spray head for deep nasal cavity as described in claim 1, characterized in that: The outer end of the plunger (18) is provided with a pull rod (5) that passes laterally through the base (1). The pull rod (5) and the base (1) are connected in a sealed sliding connection. The end of the pull rod (5) is provided with a thumb groove (25). The bottom of the base (1) is provided with a connecting cover (6).

3. The directional rotating spray head for deep nasal cavity as described in claim 1, characterized in that: The first valve includes a sealing ball (26) disposed at the bottom port of the metering chamber (9) and a positioning frame (28) disposed on the inner wall of the metering chamber (9) and located above the sealing ball (26). A support spring (27) is provided between the top of the sealing ball (26) and the bottom surface of the positioning frame (28). The bottom port of the metering chamber (9) is a cone-shaped structure with the tip pointing downward.

4. The directional rotating spray head for deep nasal cavity as described in claim 1, characterized in that: The second valve includes an isolation chamber (30) disposed at the top port of the metering chamber (9), a transfer chamber (29) disposed on the outer periphery of the isolation chamber (30), and a piston (22) disposed inside the upper end of the metering chamber (9). The transfer chamber (29) is connected to the metering chamber (9) and the through hole (23) respectively and has a connecting hole (32). The side wall of the piston (22) is provided with a through hole (23) connected to its bottom surface. When the top surface of the piston (22) is in contact with the bottom surface of the isolation chamber (30), the piston (22) coincides with the connecting hole (32).

5. The directional rotating spray head for deep nasal cavity as described in claim 1, characterized in that: The retaining ring (33) has a sleeve hole (31) in the middle for the riser (7) to pass through. The sleeve hole (31) and the riser (7) are connected in a sealed sliding connection. The riser (7) and the sleeve hole (31) are circumferentially engaged. The bottom side wall of the riser (7) has a circular hole (24) through it. When the top surface of the piston (22) is in contact with the bottom surface of the isolation cavity (30), the circular hole (24) is located inside the isolation cavity (30).

6. The directional rotating spray head for deep nasal cavity as described in claim 1, characterized in that: A retaining ring (34) is provided on the inner wall of the metering cavity (9) and above the hydraulic cavity (17). The retaining ring (33) is a hollow frustum with its tip pointing upwards. The upper diameter of the metering cavity (9) is smaller than its lower diameter. The piston (22) slides against the upper inner wall of the metering cavity (9) and is located above the retaining ring (33).

7. The directional rotating spray head for deep nasal cavity as described in claim 1, characterized in that: The upper side wall of the nozzle (3) is provided with an atomizing port (35), and the end of the riser (7) is rotatably provided with a rotating seat (19) connected to the nozzle (3). The riser (7) and the atomizing port (35) are interconnected. The inner wall of the outer cylinder (2) is axially provided with a limiting groove (14), and the outer wall of the nozzle (3) is provided with a limiting slider (15). The limiting slider (15) is located inside the limiting groove (14) and slides in contact with it.

8. The directional rotating spray head for deep nasal cavity as described in claim 1, characterized in that: A support ring (13) is provided on the inner wall of the middle part of the outer cylinder (2), and a return spring (20) is provided between the top surface of the push platform (8) and the bottom surface of the support ring (13). The return spring (20) is wrapped around the outer surface of the riser (7).

9. The directional rotating spray head for deep nasal cavity as described in claim 1, characterized in that: The guide groove (11) has a continuous "V" shape, and the top end of the guide groove (11) and its bottom end are misaligned. The bottom inner edge of the outer cylinder (2) is provided with a limiting ring (12), and the top outer edge of the base (1) is provided with an annular groove (16). The limiting ring (12) is located inside the annular groove (16) and slides against each other.

10. The directional rotating spray head for deep nasal cavity as described in claim 1, characterized in that: The outer cylinder (2) is provided with a flexible pad (4) at its end. The bottom surface of the flexible pad (4) is provided with a retaining ring (33). The end face of the outer cylinder (2) is provided with a slot (10). The retaining ring (33) and the slot (10) are detachably connected.

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