Nasal cavity drug delivery device

Abstract

The utility model provides a nasal cavity drug delivery device, which comprises an injector, a drug delivery tube, a drug delivery tube, a drug delivery tube, a drug delivery tube, a drug delivery tube, a drug delivery tube, a drug delivery tube and a drug delivery tube, the atomizing head is arranged at the non-flange end of the needle cylinder and is used for atomizing the liquid medicine pushed out by the needle cylinder and spraying out the liquid medicine; the quantitative assist device is detachably arranged at the upper end of the flange part and movably arranged on the peripheral side of the piston rod in a sleeving mode, the quantitative assist device is provided with at least one step structure, and each step structure comprises a first limiting edge, a second limiting edge and a stopping face used for stopping the handle; the flange portion is provided with a limiting groove in a penetrating mode, the step structure can penetrate through the limiting groove, and the first limiting edge and the second limiting edge are matched with the limiting groove in a limiting mode so that the stopping face can have different heights relative to the flange portion. The problems of inaccurate dosage control and non-uniform drug distribution of traditional nasal cavity drug delivery equipment can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of medical apparatus and instruments, in particular to a nasal cavity dosing device. BACKGROUND

[0002] Nasal cavity dosing has been attracting more and more attention in recent years due to its unique physiological advantages and is considered as a new type of dosing approach with high development potential. Compared with traditional oral or injection dosing, nasal cavity dosing not only avoids the first-pass effect of the gastrointestinal tract, but also improves bioavailability. At the same time, due to its non-invasive characteristics, patients are more likely to accept treatment, especially for children and the elderly. In addition, the rich vascular distribution and large absorption area of the nasal mucosa enable drugs to be quickly absorbed into the blood circulation, which is undoubtedly an important advantage for treatment programs that require rapid onset. Therefore, in the treatment of allergic rhinitis, chronic sinusitis and other nasal diseases, nasal cavity dosing has been proven to be one of the effective treatment methods.

[0003] With the deepening of research and the progress of technology, the application range of nasal cavity dosing is continuously expanding. In addition to treating local conditions, it is expected to play a role in the treatment of systemic diseases, such as immune regulation, nervous system diseases, and infectious disease prevention. In particular, with the successful development and application of nasal spray vaccines such as influenza and respiratory syncytial virus (RSV), the potential of nasal cavity dosing in vaccine inoculation has been further explored, providing a new means to improve public health.

[0004] However, the current common nasal cavity dosing equipment on the market still has many shortcomings. These devices usually include a syringe with an atomizing nozzle, and the user needs to insert the nozzle into the nasal cavity and administer the drug according to subjective judgment. This method relying on the experience and feeling of the user is difficult to achieve accurate dose control, especially in cases where strict dose management is required. In addition, due to the complexity of the internal structure of the nasal cavity, it is often difficult to ensure uniform distribution of the drug in the bilateral nasal cavity using traditional tools, resulting in low drug utilization and affecting treatment effectiveness.

[0005] In view of this, the present inventors have specially designed a nasal cavity dosing device, which has thus been developed. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above problems, the technical scheme of the utility model is as follows:

[0007] A nasal cavity dosing device, comprising:

[0008] A syringe comprising a needle cylinder, a piston rod and a handle, one end of the needle cylinder is provided with a flange portion for aspirating, storing and pushing the liquid medicine;

[0009] The atomizing head is arranged at the non-flange end of the needle cylinder and used for atomizing and spraying the liquid medicine pushed out by the needle cylinder;

[0010] The quantitative auxiliary is detachably arranged on the upper end of the flange part and movably sleeved on the outer circumferential side of the piston rod, has at least one step structure, and the step structure comprises a first limiting edge, a second limiting edge and a stop surface for stopping the handle.

[0011] The limiting groove is arranged through the flange part, the first limiting edge and the second limiting edge are respectively limitedly matched with the limiting groove, and the stop surface has different heights relative to the flange part.

[0012] Preferably, the quantitative auxiliary comprises two limiting plates which are rotationally symmetrically arranged around the same center and a connecting edge connected to the top of the two limiting plates, the two limiting plates are arc-shaped and bent so that the outer circumferential surfaces of the two limiting plates are located on the circumferential surface of the same cylinder, and the first limiting edge and the second limiting edge are respectively arranged at the bottom of the limiting plate and are distributed in a stepped manner.

[0013] Preferably, the connecting edge is arc-shaped and bent so that an arc-shaped limiting hole with one side open is formed between the inner side of the connecting edge and the top of the two limiting plates, and the piston rod is coaxial with the arc-shaped limiting hole when the quantitative auxiliary is fixed to the flange part.

[0014] Preferably, arc-shaped guide angles are symmetrically arranged on both sides of the opening of the limiting hole.

[0015] Preferably, the first limiting edge and the second limiting edge of the bottom surfaces of the two limiting plates are rotationally symmetric.

[0016] Preferably, the limiting groove is provided with two limiting grooves which are symmetrically distributed about the axis of the needle cylinder and are both 1 / 4 circular arc-shaped, and the maximum cross sections of the two limiting plates are both 1 / 4 circular arc-shaped and embedded in the limiting groove.

[0017] Preferably, the top of the two limiting plates is symmetrically provided with a stress structure for facilitating the force of the hands of a user.

[0018] Preferably, the stress structure is a hollow groove recessed downward along the top of the limiting plate.

[0019] Preferably, the edge of the hollow groove is provided with an arc-shaped guide surface.

[0020] Preferably, the stress structure is an ear plate symmetrically fixed to the top of the two limiting plates.

[0021] The beneficial effects of the utility model are as follows:

[0022] The utility model discloses an improved design, can effectively solve the problems, such as inaccurate dose control and uneven drug distribution, of the traditional nasal cavity drug delivery device.

[0023] Firstly, by adjusting the contact state between the first limit edge, the second limit edge and the limit groove in the quantitative auxiliary, the lowest position of the syringe handle pressing down can be accurately controlled, thereby ensuring the consistency and accuracy of each dose, and eliminating the dose error caused by manual operation.

[0024] In addition, the atomizing head of the device can fully atomize the liquid medicine before spraying it out, ensuring that the medicine is evenly distributed in the nasal cavity, thereby improving the absorption efficiency of the medicine and enhancing the treatment effect.

[0025] Among them, by means of different settings of the step structure, the dose can be flexibly adjusted according to the specific treatment needs, greatly enhancing the adaptability and practicality of the device.

[0026] In particular, stress structures such as hollow grooves or ear plates are designed on the limiting plate, which significantly improves the user's grip feeling and makes the entire operation process more comfortable and easy.

[0027] In addition, the quantitative auxiliary adopts a detachable design, which facilitates daily cleaning and disinfection, ensures the hygiene and safety of the equipment, and prolongs its service life. BRIEF DESCRIPTION OF DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application.

[0029] Among them:

[0030] Figure 1 is the overall structure schematic diagram of the embodiment one of the present application;

[0031] Figure 2 is the three-dimensional structure schematic diagram of the embodiment one of the present application highlighting the syringe and the quantitative auxiliary;

[0032] Figure 3 is the local structure schematic diagram of the embodiment one of the present application highlighting the flange part;

[0033] Figure 4 is the top view structure schematic diagram of the embodiment one of the present application highlighting the flange part;

[0034] Figure 5 is one of the three-dimensional structure schematic diagrams of the quantitative auxiliary in the embodiment one of the present application;

[0035] Figure 6 is the other three-dimensional structure schematic diagram of the quantitative auxiliary in the embodiment one of the present application;

[0036] Figure 7is the bottom structure schematic view of the quantitative assistant in the embodiment one of the utility model;

[0037] Figure 8 is the use process schematic view of the embodiment one of the utility model;

[0038] Figure 9 is the three-dimensional structure schematic view of the convex syringe and quantitative assistant in the embodiment two of the utility model.

[0039] Label explanation:

[0040] 10, needle cylinder;11, liquid storage cavity;12, atomizing head;20, piston rod;30, handle;40, flange part;41, limiting groove;50, quantitative assistant;51, first limiting edge;52, second limiting edge;53, stop face;54, limiting plate;55, connecting edge;56, arc limiting hole;57, arc guide corner;60, stress structure;61, hollow groove;62, arc guide face;63, ear plate. Specific implementation

[0041] In order to make the technical problem, technical scheme and beneficial effect of the utility model to be solved more clear, explicit, with the following combining with the drawings and embodiment, the utility model is further detailedly explained.It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model. Embodiment

[0042] Please refer to Figures 1 to 9 It is a nasal cavity administration device as the best embodiment of the utility model, comprising:

[0043] Syringe, including needle cylinder 10, piston rod 20 and handle 30 in the shape of flat round sheet, one end of needle cylinder 10 is equipped with flange part 40, for sucking, storing and pushing liquid medicine;

[0044] In the embodiment, needle cylinder 10 has a liquid storage cavity 11 with both ends through, and the end of piston rod 20 away from handle 30 is provided with a rubber plug (not shown in the figure) in clearance fit with liquid storage cavity 11, so that when the user pulls piston rod 20 through handle 30, the rubber plug can change the liquid volume in liquid storage cavity 11, to achieve the purpose of sucking, storing and pushing liquid medicine, and flange part 40 is in the shape of spindle as a whole, and is arranged on the larger opening side of needle cylinder 10, for cooperating with handle 30 to realize the stop of piston rod 20 and facilitate the user's hand holding.

[0045] Atomizing head 12 is arranged on the non-flange end of needle cylinder 10, for atomizing and spraying the liquid medicine pushed out by needle cylinder 10;

[0046] In this embodiment, the atomizing head 12 is a common atomizing device on the market that can be matched with a syringe. It is detachably sleeved on the smaller opening side of the needle cylinder 10. When the drug solution is being taken, the atomizing head 12 is in a non-installed state. The opening position of the needle cylinder 10 is sleeved with a detachable needle for facilitating the taking of the drug solution. After the taking of the drug solution is completed, the needle is detached, and the atomizing head 12 is replaced, thereby facilitating the subsequent drug administration process.

[0047] The dosing aid 50 is detachably arranged on the upper end of the flange portion 40 and movably sleeved on the outer circumferential side of the piston rod 20. The dosing aid 50 has at least one stepped structure, which includes a first limiting edge 51, a second limiting edge 52, and a stop surface 53 for stopping the handle 30.

[0048] The flange portion 40 is provided with a limiting groove 41 penetrating through the flange portion 40 for the stepped structure to pass through. The first limiting edge 51 and the second limiting edge 52 are respectively limitedly matched with the limiting groove 41, so that the stop surface 53 has different heights relative to the flange portion 40.

[0049] Preferably, as shown in Figure 5 , 6 , the dosing aid 50 includes two limiting plates 54 that are rotationally symmetrically arranged around the same center and a connecting edge 55 connecting the top portions of the two limiting plates 54. The two limiting plates 54 are arc-shaped bent so that the outer circumferential surfaces of the two limiting plates 54 are located on the circumferential surface of the same cylinder. The first limiting edge 51 and the second limiting edge 52 are respectively arranged at the bottom portions of the limiting plates 54 and are distributed in a stepped manner.

[0050] In this embodiment, the connecting edge 55 is in the shape of a circular sheet and covers the circular opening position formed at the upper end of the two limiting plates 54. A hollow circular hole slightly larger than the maximum outer diameter of the piston rod 20 is formed in the center of the connecting edge 55. An arc-shaped limiting hole 56 is formed by opening one side of the circular hole. The upper end surface of the connecting edge 55 is the stop surface 53. Therefore, the above structure enables the dosing aid to be clamped into the outer side of the piston rod 20 through the arc-shaped limiting hole 56, to slide up and down along the piston rod 20, to generate different matching states with the flange portion 40, and to form stop surfaces 53 of different heights, thereby differentially limiting the lowest pressing position of the handle 30 and achieving precise drug administration control.

[0051] Specifically, the connecting edge 55 is arc-shaped bent so that the inner side thereof and the top portions of the two limiting plates 54 together form a side-opened arc-shaped limiting hole 56. When the dosing aid 50 is fixed to the flange portion 40, the piston rod 20 is coaxial with the arc-shaped limiting hole 56.

[0052] Further, as shown in Figure 5 , arc-shaped guide angles 57 are symmetrically arranged on both sides of the opening of the limiting hole. Through the design of the arc-shaped guide angles 57, the dosing aid 50 can be more smoothly guided when being clamped into the piston rod 20, so that it is easier to be clamped into the outer circumferential side of the piston rod 20.

[0053] Preferably, as shown in Figures 3-7 The first limiting edge 51 and the second limiting edge 52 of the bottom surface of the two limiting plates 54 are rotationally symmetrical, the limiting groove 41 is provided with two limiting grooves 41 which are symmetrically distributed about the axis of the needle cylinder 10 and each is a 1 / 4 circular arc, and the maximum cross section of each of the two limiting plates 54 is a 1 / 4 circular arc which is fitted into the limiting groove 41.

[0054] In this embodiment, the relative position of the first limiting edge 51 is lower than that of the second limiting edge 52, and the arc length of the first limiting edge 51 and the second limiting edge 52 corresponding to the circumference is half of the arc length of the limiting groove 41 corresponding to the circumference, so that the first limiting edge 51 and the second limiting edge 52 can be exactly clamped into the limiting groove 41.

[0055] Preferably, the top of the two limiting plates 54 is symmetrically provided with a stress structure 60 which is convenient for the user to exert force.

[0056] Preferably, in this embodiment, the stress structure 60 is a hollow groove 61 which is recessed downward along the top of the limiting plate 54, and the edge of the hollow groove 61 is provided with an arc-shaped guide surface 62.

[0057] Therefore, through the hollow groove 61, the user can hold the dosing aid 50 from both sides to move or rotate the dosing aid 50.

[0058] As shown in Figure 8 The use process of this embodiment is as follows:

[0059] Firstly, the user sucks the drug liquid into the liquid chamber 11 of the needle cylinder 10 by replacing the needle of the syringe, at this time the piston rod 20 is at the maximum stroke, the needle cylinder 10 is inverted, and the piston rod 20 is pushed upward so that the excess gas in the liquid chamber 11 is pushed out, and finally the drug liquid to be given is left;

[0060] Subsequently, the dosing aid 50 in the package is taken out, the arc-shaped limiting hole 56 is clamped into the piston rod 20 so that the center of the arc-shaped limiting hole 56 coincides with the axis of the piston rod 20;

[0061] Subsequently, the dosing aid 50 is moved downward so that the first limiting edge 51 is aligned with the edge position of the limiting groove 41 below, at this time if the dosing aid 50 is continuously pushed downward, the first limiting edge 51 can be completely clamped into the limiting groove 41, and the second limiting edge 52 serves as a step structure to limit and stop the upper end surface of the flange portion 40, the handle 30 is pressed so that the handle 30 coincides with the stop surface 53 at the uppermost end of the dosing aid 50 at this position, and the excess drug liquid is squeezed out, and this position is the starting position of the first injection;

[0062] Continuing to press the handle 30 downward, the handle 30 drives the quantitative auxiliary device 50 to continue to move downward, and the quantitative auxiliary device 50 is matched with the mounting of the atomizing head 12, so that the quantitative administration of the first nasal cavity is completed, and when the second limiting edge 52 is limited by the end surface of the flange portion 40, the quantitative administration process of the first nasal cavity is completed;

[0063] Subsequently, the quantitative auxiliary device 50 is rotated through the force receiving structure 60, so that the second limiting edge 52 is rotated to a position capable of being completely inserted into the limiting groove 41, at this time, the first limiting edge 51 is moved to the other side of the same limiting groove 41, and the preparation stage of the second administration is completed;

[0064] Finally, continuing to press the handle 30 downward, the handle 30 drives the quantitative auxiliary device 50 to continue to move downward, and the quantitative auxiliary device 50 is matched with the atomizing head 12, so that the quantitative administration of the second nasal cavity is completed, and when the second limiting edge 52 is completely immersed in the limiting groove 41 and the lower end surface of the connecting edge 55 is limited by the upper end surface of the flange portion 40, the quantitative administration process of the second nasal cavity is completed. Embodiment

[0065] Please refer to Figure 9 As the nasal cavity administration device of the embodiment two of the utility model, and the difference of the embodiment one is that the force receiving structure 60 is the ear plate 63 that is symmetrically fixed at the top of the two limiting plates 54.

[0066] In the embodiment, the force receiving structure 60 is the ear plate 63 of original sheet shape, and is symmetrically fixed at the top of the two limiting plates 54, so that the user can hold the two ear plates 63 to move or rotate the quantitative auxiliary device 50.

[0067] The utility model has the advantages that:

[0068] The utility model can effectively solve the problems of inaccurate dose control and uneven drug distribution of the traditional nasal cavity administration equipment.

[0069] Firstly, by adjusting the contact state between the first limiting edge 51 and the second limiting edge 52 of the quantitative auxiliary device 50 and the limiting groove 41, the lowest position of the syringe handle 30 can be accurately controlled, so that the consistency and accuracy of the dose of each administration are ensured, and the dose error caused by human operation is eliminated.

[0070] In addition, the atomizing head 12 of the device can fully atomize the liquid medicine before spraying, so that the drug is evenly distributed in the nasal cavity, and the absorption efficiency of the drug is improved, and the treatment effect is enhanced.

[0071] The different settings of the step structure can flexibly adjust the administration amount according to the specific treatment needs, greatly enhancing the adaptability and practicality of the device.

[0072] Particularly, the force receiving structure 60 such as the hollow groove 61 or the lug plate 63 is designed on the limiting plate 54, which significantly improves the holding feeling of the user and makes the whole operation process more relaxed and easy.

[0073] In addition, the quantitative aid 50 adopts a detachable design, facilitating daily cleaning and disinfection work, ensuring the hygiene and safety of the equipment, and prolonging the service life.

[0074] The utility model is described above in conjunction with the drawings, obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various non-essential improvements adopting the method concept and technical scheme of the utility model or directly applying the concept and technical scheme of the utility model to other occasions without improvement are all within the protection scope of the utility model.

Claims

1. A nasal drug delivery device, characterized in that, include: The syringe includes a syringe barrel (10), a piston rod (20) and a handle (30), wherein one end of the syringe barrel (10) is provided with a flange (40) for drawing, storing and pushing liquid medicine; Atomizing head (12) is located at the non-flange end of the syringe (10) and is used to atomize and spray the liquid medicine pushed out by the syringe (10); The metering aid (50) is detachably disposed on the upper end of the flange (40) and movably sleeved on the outer periphery of the piston rod (20), and has at least one stepped structure, the stepped structure including a first limiting edge (51), a second limiting edge (52) and a stop surface (53) for the stop handle (30). The flange (40) is provided with a limiting groove (41) through which the stepped structure passes. The first limiting edge (51) and the second limiting edge (52) respectively limit and cooperate with the limiting groove (41) so that the stop surface (53) has a different height relative to the flange (40).

2. The nasal drug delivery device according to claim 1, characterized in that, The quantitative aid (50) includes two limiting plates (54) arranged symmetrically around the same center and a connecting edge (55) connecting the top of the two limiting plates (54). The two limiting plates (54) are curved so that the outer circumferential surfaces of the two limiting plates (54) are located on the same cylindrical circumferential surface. The first limiting edge (51) and the second limiting edge (52) are respectively located at the bottom of the limiting plates (54) and are distributed in a stepped manner.

3. A nasal drug delivery device according to claim 2, characterized in that, The connecting edge (55) is curved so that its inner side and the top of the two limiting plates (54) form an arc-shaped limiting hole (56) with an opening on one side. When the quantitative auxiliary device (50) is fixed to the flange (40), the piston rod (20) is coaxial with the arc-shaped limiting hole (56).

4. A nasal drug delivery device according to claim 3, characterized in that, The limiting hole has symmetrical arc-shaped bevels (57) on both sides of its opening.

5. A nasal drug delivery device according to claim 2, characterized in that, The first limiting edge (51) and the second limiting edge (52) on the bottom surface of the two limiting plates (54) are rotationally symmetrical.

6. A nasal drug delivery device according to claim 5, characterized in that, The limiting groove (41) is provided in two parts. The two limiting grooves (41) are symmetrically distributed about the axis of the syringe (10) and are both in the shape of a 1 / 4 arc. The maximum cross-section of the two limiting plates (54) is in the shape of a 1 / 4 arc that fits into the limiting groove (41).

7. A nasal drug delivery device according to claim 2, characterized in that, The tops of the two limiting plates (54) are symmetrically provided with force-bearing structures (60) to facilitate the force applied to the user's hands.

8. A nasal delivery device according to claim 7, characterized in that, The force-bearing structure (60) is a hollow groove (61) that is recessed downward along the top of the limiting plate (54).

9. A nasal drug delivery device according to claim 8, characterized in that, The edge of the hollowed-out groove (61) is provided with an arc-shaped guide surface (62).

10. A nasal delivery device according to claim 7, characterized in that, The force-bearing structure (60) is an ear plate (63) symmetrically fixed on the top of the two limiting plates (54).

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