Pressing member and nasal mucosa administration device
Patent Information
- Application Number
- CN202522079424.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-09-26
AI Technical Summary
由于按压喷头需要伸入鼻腔，其尺寸不可过大，在挤压按压喷头时，操作空间局促导致操作不便，影响给药的准确度
本申请提供的按压件包括限位部和两个按压部，按压件上开设有套孔，套孔形成于两个按压部之间，套孔用于与鼻黏膜给药装置的按压喷头插接配合，限位部沿套孔的径向凸出于套孔的内壁，限位部用于沿套孔的轴向抵接按压喷头上的台阶面。用户在使用含有该按压件的鼻黏膜给药装置时，可以通过按压按压件上的按压部来使按压件运动，按压件上的限位部抵接按压喷头上的台阶面，从而实现对按压喷头的挤压，按压喷头进而可以释放药物。由于按压件套设在按压喷头的外侧，按压部向外延展，从而方便用户手指按压和施力。两个按压部设置在套孔两侧，同时按压两个按压部能够保证施力的均匀和平衡，能够避免单侧按压导致按压喷头不易压下的问题。按压件是鼻粘膜给药装置的核心组件，通过用户手动按压实现药物定量喷射，应用于鼻腔药物的输送，该组件能够改变原鼻喷雾泵的按压部位，使用人群能够双手正立使用。本按压件的尺寸与形状能够使得使用者以最大概率将药物递送至特定的部位从而起效。可见，通过本申请提供的按压件，使得患者能够以特定的给药姿态与符合人体工学的舒适按压操作来实现靶向的药物递送，能够提高给药的便利性，有利于提高鼻黏膜给药的准确度，能够极大的提高大分子药物在鼻黏膜给药的吸收从而达到系统性暴露。
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Figure CN224711431U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and more specifically, to a press-type device and a nasal mucosa delivery device. Background Technology
[0002] Nasal drug delivery systems refer to preparations that are applied directly to the nasal cavity and absorbed through the nasal mucosa to exert local or systemic therapeutic effects. The nasal cavity is lined with numerous cilia and mucosa, and has a large surface area (approximately 150-200 cm² in adults). 2 The nasal cavity is rich in blood vessels, allowing for rapid drug absorption. The submucosa contains dense capillaries and lymphatic vessels, enabling drugs absorbed through the nasal mucosa to directly enter the systemic circulation, avoiding the first-pass effect of the liver. This significantly improves drug bioavailability and onset of action, making it an important alternative to oral administration, especially suitable for drugs easily metabolized by the liver or requiring rapid onset of action. The nasal drug delivery process is highly dependent on the administration site. The nasal vestibule is mainly composed of stratified squamous epithelial cells with dense connective tissue, making it difficult for large molecules to pass through. In contrast, the respiratory and olfactory regions are covered by simple and stratified ciliated columnar epithelium, with loose connective tissue and abundant venous plexuses. With the help of novel permeation enhancers, specific drugs can be delivered directly to the central nervous system from the olfactory region of the ethmoid plate, which is rich in nerve plexuses, via paracellular pathways. Nasal drug delivery systems offer advantages such as effectively avoiding the first-pass effect, rapid absorption and onset of action, non-invasive and convenient administration, and high patient compliance (especially for children or patients experiencing syncope).
[0003] In related technologies, when administering medication through the nasal cavity, a pump nozzle is inserted into the nasal cavity, and the medication is pumped to the intended administration site by pressing. Because the pump nozzle needs to be inserted into the nasal cavity, its size cannot be too large. The limited operating space when squeezing the nozzle leads to inconvenience and affects the accuracy of medication administration. Utility Model Content
[0004] The purpose of this application is to provide a press-type nozzle and a nasal mucosal drug delivery device that facilitates pressing of the nozzle, improving ease of operation and accuracy of drug delivery.
[0005] The embodiments of this application can be implemented as follows: In a first aspect, this application provides a pressing member for use in a nasal mucosa drug delivery device. The pressing member includes a limiting part and two pressing parts. A sleeve hole is formed on the pressing member between the two pressing parts. The sleeve hole is used to insert and cooperate with the pressing nozzle of the nasal mucosa drug delivery device. The limiting part protrudes radially from the inner wall of the sleeve hole and is used to abut against the stepped surface of the pressing nozzle along the axial direction of the sleeve hole.
[0006] In an optional embodiment, the pressing part is provided with anti-slip texture.
[0007] In an optional embodiment, the anti-slip texture is a raised rib, and multiple anti-slip textures are arranged at radial intervals along the sleeve hole.
[0008] In an optional embodiment, the pressing part is provided with a pressing groove.
[0009] In an optional embodiment, two pressing parts are spaced apart in a first direction, and each pressing part is provided with two pressing grooves. The two pressing grooves are spaced apart in a second direction, and the first direction, the second direction, and the axis of the sleeve hole are perpendicular to each other.
[0010] In an optional embodiment, the pressing member includes a sleeve portion forming a sleeve hole, a limiting portion disposed on the inner side of one axial end of the sleeve portion, and a pressing portion disposed on the outer side of the other axial end of the sleeve portion.
[0011] In an optional embodiment, the limiting part is an annular plate extending circumferentially around the sleeve hole.
[0012] In an optional embodiment, the inner wall of the sleeve is provided with a snap-fit boss, which is used to engage with the elastic buckle on the press nozzle.
[0013] In an optional embodiment, the limiting part is an annular plate extending circumferentially around the sleeve hole, and the limiting part is provided with a clearance hole, which is spaced apart from the locking boss in the axial direction of the sleeve hole.
[0014] Secondly, this application provides a nasal mucosa drug delivery device, including a press nozzle and a press member according to any of the foregoing embodiments. The press nozzle is used to spray out the drug by pressing. The press nozzle has a stepped surface. The press member is sleeved on the outside of the press nozzle through a sleeve hole, and the limiting part abuts against the stepped surface.
[0015] The beneficial effects of the pressing element and nasal mucosa drug delivery device provided in this application include: The pressing component provided in this application includes a limiting part and two pressing parts. A sleeve hole is formed on the pressing component between the two pressing parts, and the sleeve hole is used for insertion and mating with the pressing nozzle of a nasal mucosa drug delivery device. The limiting part protrudes radially from the inner wall of the sleeve hole and abuts against the stepped surface of the pressing nozzle along the axial direction of the sleeve hole. When using the nasal mucosa drug delivery device containing this pressing component, the user can move the pressing component by pressing the pressing parts. The limiting part abuts against the stepped surface of the pressing nozzle, thereby squeezing the pressing nozzle and releasing the drug. Because the pressing component is sleeved on the outside of the pressing nozzle and the pressing parts extend outward, it facilitates pressing and applying force with the user's fingers. The two pressing parts are located on both sides of the sleeve hole, and pressing both pressing parts simultaneously ensures uniform and balanced force, avoiding the problem of the pressing nozzle being difficult to press down due to unilateral pressing. The press-type device is the core component of the nasal mucosal drug delivery device. It delivers a precise dose of medication via manual pressing, allowing for the delivery of drugs into the nasal cavity. This component alters the pressing position of traditional nasal spray pumps, allowing users to operate it with both hands upright. The size and shape of this press-type device maximize the probability of delivering medication to the desired site for effectiveness. Therefore, the press-type device provided in this application enables patients to achieve targeted drug delivery through a specific administration posture and ergonomically comfortable pressing operation, improving the convenience of drug administration, enhancing the accuracy of nasal mucosal drug delivery, and significantly improving the absorption of large molecule drugs through the nasal mucosa, thus achieving systemic exposure.
[0016] The nasal mucosa drug delivery device provided in this application includes a press nozzle and the aforementioned press element, which facilitates nasal mucosa drug delivery for users, thereby improving the accuracy of drug delivery and thus improving the therapeutic effect. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a first schematic diagram of the pressing member in the first embodiment of this application; Figure 2 This is a second schematic diagram of the pressing member in the first embodiment of this application; Figure 3 This is a schematic diagram of the pressing element in the second embodiment of this application; Figure 4 This is a first schematic diagram of the pressing element in the third embodiment of this application; Figure 5This is a second schematic diagram of the pressing element in the third embodiment of this application; Figure 6 This is a schematic diagram of a nasal mucosal drug delivery device in one embodiment of this application.
[0019] Icons: 100-Pressing part; 101-Sleeve hole; 110-Sleeve part; 111-Snap-fit boss; 120-Pressing part; 121-Anti-slip texture; 122-Pressing groove; 123-Weight reduction groove; 130-Limiting part; 131-Allowing hole; 200-Pressing nozzle; 210-Outlet; 300-Medicine storage tank. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0023] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0024] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0025] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.
[0026] In related technologies, nasal medication is administered by inserting a pump nozzle into the nasal cavity and pumping the medication to the nasal mucosa by pressing. However, because the pump nozzle needs to be inserted into the nasal cavity, its size cannot be too large. The limited operating space when squeezing the nozzle leads to inconvenience and affects the accuracy of medication administration. Inaccurate dosage or inaccurate administration location will both affect the therapeutic effect.
[0027] In order to improve the problem of reduced drug administration accuracy caused by the inconvenience of pressing the nozzle in related technologies, this application provides a pressing element 100 and a nasal mucosa drug administration device. The pressing element 100 drives the pressing nozzle to realize drug administration, which improves the convenience of operation and the accuracy of drug administration.
[0028] Figure 1 This is a first schematic diagram of the pressing member 100 in the first embodiment of this application; Figure 2 This is a second schematic diagram of the pressing member 100 in the first embodiment of this application. (See attached diagram.) Figure 1 and Figure 2 As shown, the pressing member 100 provided in this embodiment is applied to a nasal mucosa drug delivery device, specifically for being sleeved on the pressing nozzle of the nasal mucosa drug delivery device, driving the pressing nozzle to move to achieve drug delivery. The pressing member 100 includes a limiting part 130 and two pressing parts 120. A sleeve hole 101 is formed on the pressing member 100 between the two pressing parts 120. The sleeve hole 101 is used for insertion and engagement with the pressing nozzle of the nasal mucosa drug delivery device. The limiting part 130 protrudes radially from the inner wall of the sleeve hole 101 and is used to abut against the stepped surface of the pressing nozzle along the axial direction of the sleeve hole 101. When using the nasal mucosa drug delivery device containing the press member 100, the user presses the pressing part 120 on the press member 100 to move the press member 100 axially along the sleeve hole 101. The limiting part 130 on the press member 100 abuts against the stepped surface of the press nozzle, thereby pressing down the press nozzle and releasing the drug. Since the press member 100 is sleeved on the outside of the press nozzle and the pressing part 120 extends outward, it is convenient for the user to press and apply force with their fingers. The two pressing parts 120 are arranged on both sides of the sleeve hole 101. Pressing both pressing parts 120 at the same time can ensure uniform and balanced force, avoiding the problem of the press nozzle being difficult to press down due to unilateral pressing. Therefore, using the press member 100 provided in this embodiment to assist pressing can improve the convenience of drug delivery and help improve the accuracy of nasal mucosa drug delivery.
[0029] In this embodiment, the pressing part 120 is provided with anti-slip texture 121. The anti-slip texture 121 can increase the friction when the finger presses on the pressing part 120, reduce the risk of the finger slipping on the surface of the pressing part 120, and thus further ensure the convenience of pressing.
[0030] In this embodiment, the anti-slip texture 121 is a raised rib, and multiple anti-slip textures 121 are arranged at radial intervals along the sleeve hole 101. In other words, the anti-slip textures 121 on the pressing part 120 are arranged at intervals from near the sleeve hole 101 to away from the sleeve hole 101. In other optional embodiments, the anti-slip texture 121 can also be a groove, which can also increase the friction between the finger and the pressing part 120; or, the anti-slip texture 121 can also be replaced with a raised dot; or, the surface on the pressing part 120 for contact with the finger can be set as a frosted surface.
[0031] In this embodiment, the pressing member 100 includes a sleeve portion 110, which forms a sleeve hole 101. A limiting portion 130 is disposed on the inner side of one axial end of the sleeve portion 110, and a pressing portion 120 is disposed on the outer side of the other axial end of the sleeve portion 110. Figure 1 As can be seen, the pressing part 120 and the limiting part 130 are located at different ends of the sleeve part 110, and the pressing part 120 extending along the first direction and the sleeve part 110 extending along the axial direction of the sleeve hole 101 form a T-shaped structure.
[0032] In this embodiment, the limiting part 130 is an annular plate extending circumferentially around the sleeve hole 101. Because the limiting part 130 is a continuous annular closed structure, the connection area between it and the inner wall of the sleeve part 110 is large, resulting in good reliability and making it less prone to deformation or damage after contact with the press nozzle. In other optional embodiments, the limiting part 130 may also include a discontinuous multi-segment structure arranged circumferentially around the sleeve hole 101.
[0033] like Figure 2 As shown, in this embodiment, the inner wall of the sleeve hole 101 is provided with a snap-fit boss 111, which is used to cooperate with the elastic buckle on the press nozzle. By providing the snap-fit boss 111 to cooperate with the elastic buckle on the press nozzle, the pressing member 100 can be effectively prevented from falling off the press nozzle in the opposite direction of the pressing direction. It should be understood that the elastic buckle on the press nozzle is elastic in the radial direction, and the elastic buckle is provided with a snap-fit hole, which can be inserted and cooperate with the snap-fit boss 111. In this embodiment, the inner wall of the sleeve hole 101 is provided with a total of four snap-fit bosses 111, which are evenly spaced along the circumference of the sleeve hole 101. The four snap-fit bosses 111 can correspondingly cooperate with the four elastic buckles on the press nozzle. In other optional embodiments, the number of snap-fit bosses 111 can be increased or decreased as needed.
[0034] Furthermore, the snap-fit boss 111 has an inclined surface. Therefore, during the assembly of the pressing component 100, the elastic buckle can deform radially inward under the guidance of the inclined surface and slide relative to the inclined surface, ultimately allowing the snap hole to engage with the snap-fit boss 111. Under the action of elastic force, the elastic buckle returns radially outward to its initial state, completing the assembly. After assembly, the limiting part 130 abuts against the stepped surface of the pressing nozzle, preventing the pressing nozzle from being inserted further. The engagement of the elastic buckle and the snap-fit boss 111 ensures that the pressing component 100 will not fall off in the opposite direction of the pressing direction.
[0035] In this embodiment, the limiting part 130 is provided with a clearance hole 131, which is axially spaced from the locking boss 111 in the sleeve hole 101. When it is necessary to remove the pressing member 100, a thin tool can be inserted into the sleeve hole 101 through the clearance hole 131 to pry open the elastic buckle on the pressing head, causing it to lose its engagement with the locking boss 111 on the pressing member 100. Then, the pressing member 100 can be pulled off the pressing head in the opposite direction of the pressing direction. By providing the clearance hole 131 and the locking boss 111, the disassembly and assembly of the pressing member 100 can be facilitated.
[0036] Figure 3 This is a schematic diagram of the pressing member 100 in the second embodiment of this application. Figure 3 As shown, in the second embodiment of this application, the pressing member 100 and... Figure 1 , Figure 2 The difference in the illustrated embodiment of the pressing member 100 is that a pressing groove 122 is added to the pressing part 120. In this embodiment, the user's finger can be inserted into the pressing groove 122 to press, and the pressing groove 122 can restrict the finger from sliding relative to the pressing part 120, thereby improving the reliability of pressing and ensuring smooth drug administration.
[0037] like Figure 3 As shown, two pressing parts 120 are spaced apart in a first direction, and each pressing part 120 is provided with two pressing grooves 122. The two pressing grooves 122 are spaced apart in a second direction, and the first direction, the second direction, and the axis of the sleeve hole 101 are perpendicular to each other. By providing two pressing grooves 122, two fingers of the left hand and two fingers of the right hand can be pressed into one pressing groove 122 respectively.
[0038] In this embodiment, the anti-slip texture 121 is provided at the bottom of the pressing groove 122.
[0039] Figure 4 This is a first schematic diagram of the pressing member 100 in the third embodiment of this application; Figure 5 This is a second schematic diagram of the pressing member 100 in the third embodiment of this application. (See attached diagram.) Figure 4 and Figure 5As shown, in this embodiment, the shape of the pressing part 120 differs from that of the pressing part 120 of the pressing member 100 in the first and second embodiments, and the sleeve part 110 is omitted. In this embodiment, the thickness of the pressing part 120 near the sleeve hole 101 is approximately the same as the depth of the sleeve hole 101. One surface of the pressing part 120 in the thickness direction is flush with the surface of the limiting part 130, and the other surface of the pressing part 120 in the thickness direction is flush with the edge of the sleeve hole 101 away from the limiting part 130. Furthermore, the pressing part 120 gradually thins from the end near the sleeve hole 101 to the end away from the sleeve hole 101, so that the side of the pressing part 120 that is used to press and contact the user's finger presents a slope. Since the pressing part 120 in this embodiment is thicker than the pressing part 120 in the previous embodiments, it has better strength and is not easily deformed or damaged by pressing force.
[0040] To reduce the increased weight due to the thickening of the pressing part 120, in this embodiment, a weight-reducing groove 123 is provided on the pressing part 120; specifically, the weight-reducing groove 123 is formed on the side of the pressing part 120 opposite to the pressing surface (the side for contact with the user's finger). In this embodiment, each pressing part 120 is provided with two weight-reducing grooves 123. In other optional embodiments, the number and size of the weight-reducing grooves 123 can be increased or decreased as needed.
[0041] exist Figure 4 , Figure 5 In this embodiment, the arrangement and working principle of structures such as the snap-fit boss 111, the limiting part 130, the clearance hole 131, and the anti-slip texture 121 can be referred to Figures 1 to 3 The descriptions in the embodiments will not be repeated here.
[0042] In the above embodiments, the pressing member 100 can be an integral design to improve the structural reliability of the pressing member 100; in other embodiments, the pressing member 100 can also be a split design.
[0043] It should be understood that the dimensions of each feature in the pressing element 100 should be designed according to requirements. For example, the diameter of the sleeve 101 should be selected based on the outer diameter of the pressing nozzle. Optionally, the diameter of the sleeve 101 can be 20-30 mm, such as 25 mm. The dimension of the entire pressing element 100 along the first direction can be 60-80 mm, and the dimension along the second direction can be 25-35 mm. The depth of the sleeve 101 (i.e., the axial dimension of the sleeve 101) can be 8-15 mm. Appropriate dimensional design facilitates accurate drug delivery by the nasal mucosal drug delivery device.
[0044] Figure 6 This is a schematic diagram of a nasal mucosal drug delivery device in one embodiment of this application. Figure 6As shown, this application embodiment also provides a nasal mucosa drug delivery device, including a pressable nozzle 200 and a pressable member 100 as described in the above embodiment. The pressable nozzle 200 is used to spray medication by pressing. The pressable nozzle 200 has a stepped surface. The pressable member 100 is sleeved on the outside of the pressable nozzle 200 through a sleeve hole 101, and a limiting portion 130 abuts against the stepped surface. After the pressable nozzle 200 and the pressable member 100 are sleeved and engaged, one end of the pressable nozzle 200, where the outlet 210 is located, extends out from the sleeve hole 101 of the pressable member 100.
[0045] Furthermore, the outer periphery of the press nozzle 200 is provided with an elastic buckle, which engages with the snap-fit boss 111 on the press member 100. The elastic buckle has a snap-fit hole, allowing it to undergo elastic deformation in the radial direction under pressure.
[0046] Furthermore, the nasal mucosal drug delivery device also includes a drug reservoir 300, which is connected to a press nozzle 200. When pressed, the press nozzle 200 can pump out the drug from the drug reservoir 300.
[0047] In summary, the pressing member 100 provided in this application includes a limiting part 130 and two pressing parts 120. A sleeve hole 101 is formed on the pressing member 100 between the two pressing parts 120. The sleeve hole 101 is used for insertion and engagement with the pressing nozzle of the nasal mucosa drug delivery device. The limiting part 130 protrudes radially from the inner wall of the sleeve hole 101 and abuts against the stepped surface of the pressing nozzle along the axial direction of the sleeve hole 101. When using the nasal mucosa drug delivery device containing this pressing member 100, the user can move the pressing member 100 by pressing the pressing part 120. The limiting part 130 abuts against the stepped surface of the pressing nozzle, thereby squeezing the pressing nozzle and releasing the drug. Because the pressing element 100 is sleeved on the outside of the press nozzle, and the pressing part 120 extends outward, it facilitates user finger pressing and force application. Two pressing parts 120 are located on both sides of the sleeve hole 101; pressing both pressing parts 120 simultaneously ensures uniform and balanced force application, avoiding the problem of the press nozzle being difficult to press down due to unilateral pressing. The pressing element 100 is the core component of the nasal mucosal drug delivery device. It achieves quantitative drug spraying through manual pressing by the user and is used for nasal drug delivery. This component changes the pressing position of the original nasal spray pump, allowing users to use it with both hands upright. The size and shape of this pressing element 100 enable users to deliver the drug to the specific site with the highest probability of effectiveness. Therefore, the pressing element 100 provided in this application allows patients to achieve targeted drug delivery through a specific drug delivery posture and ergonomically comfortable pressing operation, improving the convenience of drug delivery, enhancing the accuracy of nasal mucosal drug delivery, and greatly improving the absorption of large molecule drugs through nasal mucosal drug delivery, thereby achieving systemic exposure.
[0048] The nasal mucosa drug delivery device provided in this application includes a press nozzle and the aforementioned press member 100, which facilitates nasal mucosa drug delivery for users, thereby improving the accuracy of drug delivery and thus improving the therapeutic effect.
[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.
Claims
1. A pressing element for use in a nasal mucosa drug delivery device, characterized in that, The pressing member (100) includes a limiting part (130) and two pressing parts (120). The pressing member (100) has a sleeve hole (101) formed between the two pressing parts (120). The sleeve hole (101) is used to insert and cooperate with the pressing nozzle of the nasal mucosa drug delivery device. The limiting part (130) protrudes radially from the inner wall of the sleeve hole (101). The limiting part (130) is used to abut against the stepped surface of the pressing nozzle along the axial direction of the sleeve hole (101).
2. The pressing element according to claim 1, characterized in that, The pressing part (120) is provided with anti-slip texture (121).
3. The pressing element according to claim 2, characterized in that, The anti-slip texture (121) is a raised rib, and multiple anti-slip textures (121) are arranged at radial intervals along the sleeve hole (101).
4. The pressing element according to claim 1, characterized in that, The pressing part (120) is provided with a pressing groove (122).
5. The pressing element according to claim 4, characterized in that, The two pressing parts (120) are spaced apart in a first direction, and each pressing part (120) is provided with two pressing grooves (122). The two pressing grooves (122) are spaced apart in a second direction. The axes of the first direction, the second direction and the sleeve hole (101) are perpendicular to each other.
6. The pressing element according to claim 1, characterized in that, The pressing member (100) includes a sleeve portion (110) forming the sleeve hole (101), the limiting portion (130) is disposed on the inner side of one end of the sleeve portion (110) in the axial direction, and the pressing portion (120) is disposed on the outer side of the other end of the sleeve portion (110) in the axial direction.
7. The pressing element according to claim 1, characterized in that, The limiting part (130) is an annular plate extending circumferentially around the sleeve hole (101).
8. The pressing element according to claim 1, characterized in that, The inner wall of the sleeve hole (101) is provided with a snap-fit boss (111), which is used to cooperate with the elastic buckle on the press nozzle.
9. The pressing element according to claim 8, characterized in that, The limiting part (130) is an annular plate extending circumferentially around the sleeve hole (101). The limiting part (130) is provided with a clearance hole (131). The clearance hole (131) and the snap-fit boss (111) are spaced apart and opposite to each other in the axial direction of the sleeve hole (101).
10. A nasal mucosa drug delivery device, characterized in that, The device includes a pressable nozzle and a pressable element (100) according to any one of claims 1-9. The pressable nozzle is used to spray medicine by pressing. The pressable nozzle has a stepped surface. The pressable element (100) is sleeved on the outside of the pressable nozzle through the sleeve hole (101). The limiting part (130) abuts against the stepped surface.