Intraauricular dosing device

Abstract

The utility model discloses an in-ear dosing device, which relates to the technical field of medical instruments and comprises a medicine storage box, a box cover is detachably arranged on an opening of the medicine storage box, a liquid guide needle head is connected to the outer wall of one end of the medicine storage box, the end portion of the liquid guide needle head is of a closed expansion structure, and a continuous inclined side wall is arranged at the junction of the closed expansion structure and the liquid guide needle head. A plurality of medicine spraying holes are formed in the continuous inclined side wall, and openings of the medicine spraying holes are obliquely distributed towards one side deviating from the axis direction of the liquid guide needle head; the plurality of pesticide spraying holes form an annular expanded spraying structure; an air guide needle is axially inserted into the box cover, the end of the air guide needle is connected with a push cylinder, and a plug rod is arranged in the push cylinder. The end portion of the liquid guide needle head extends into the focus position in the middle ear, the push cylinder is adopted to provide forward pressure for the medicine storage box, liquid medicine passes through the liquid guide needle head and is sprayed to the inner wall tissue of the middle ear from the medicine spraying hole of the annular expanded spraying structure, and it is not needed to wait for the liquid medicine to slowly flow to the focus position of the middle ear from the external ear. Meanwhile, liquid medicine is prevented from directly reaching the focus position.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an intraoral drug delivery device. Background Technology

[0002] Intraacular drug delivery is a method of medication administration instilled into the external auditory canal to achieve local cleaning and anti-inflammatory purposes. It is primarily used for cleaning the external auditory canal and treating ear diseases such as otitis media and external otitis. By directly instilling the medication into the external auditory canal and middle ear, the drug can directly act on the affected area to exert its therapeutic effect.

[0003] In actual medication administration, the patient's head is usually tilted to one side with the affected ear on top. The auricle is pulled backward and upward (downward and backward for children) to straighten the ear canal, making it easier to administer the medication. 3-5 drops of medication are instilled to fill the external auditory canal, allowing the medication to slowly enter the middle ear. This method of medication administration utilizes the downward flow of liquid, which may cause the medication to flow past the lesion or fail to reach it, resulting in poor absorption and unsatisfactory treatment effects. Utility Model Content

[0004] The purpose of this invention is to provide an intraoral drug delivery device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an intraoral drug delivery device, comprising:

[0006] A medicine storage box, the opening of which is detachably covered, and a liquid guiding needle connected to the outer wall of one end of the medicine storage box. The end of the liquid guiding needle is a closed enlarged structure. A continuous inclined sidewall is provided at the junction of the closed enlarged structure and the liquid guiding needle. Multiple spray holes are opened on the continuous inclined sidewall. The openings of the spray holes are inclined to one side away from the axis of the liquid guiding needle.

[0007] Multiple spray holes form a ring-shaped, enlarged spray structure;

[0008] The cover has an axially inserted air guide needle, and the end of the air guide needle is connected to a push cylinder, which has a plug rod inside.

[0009] In a further embodiment, the liquid-guiding needle and the gas-guiding needle are of equal length and diameter, and both are made of medical-grade high-density polyethylene.

[0010] In a further embodiment, the end of the enlarged closed structure is a spherical structure.

[0011] In a further embodiment, the plunger includes a rod body and a piston, the piston being slidably inserted into the push cylinder, one end of the rod body being connected to the piston, and the other end extending out of the push cylinder.

[0012] In a further embodiment, both the pusher and the rod are arc-shaped structures;

[0013] The end of the push cylinder away from the air guide needle is connected to a fixed handle, and the end of the rod away from the push cylinder is connected to a rotating handle. The end of the rotating handle has a hinge notch that is hinged to the end of the fixed handle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model is an intraocular drug delivery device. The tip of the liquid-guiding needle is inserted into the lesion location in the middle ear. A hand-held push tube is used to push the plug rod along the inside of the push tube. The air-guiding needle serves as a ventilation channel, providing positive pressure to the drug storage box. This allows the ear drops to pass through the liquid-guiding needle and be sprayed from the spray hole of the annular enlarged spray structure onto the inner wall tissue of the middle ear, directly reaching the lesion location. There is no need to wait for the drug to slowly flow from the outer ear to the lesion location in the middle ear, saving time. At the same time, it can avoid the situation where the drug cannot reach the lesion location directly, which would affect the treatment effect.

[0016] 2. In this utility model, the opening of the spray hole is inclined to one side away from the axis of the liquid guiding needle. When the closed enlarged structure of the liquid guiding needle is placed in the middle ear, the opening of the spray hole is actually inclined to spray the middle ear wall tissue in the direction of the ear outward. This avoids the spray hole being directly set at the end of the closed enlarged structure to shoot the liquid directly into the middle ear, causing discomfort. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is a partial schematic diagram of the closed enlargement structure and the liquid guiding needle assembly structure according to an embodiment of the present invention;

[0019] Figure 3 This is a partial cross-sectional view of the closed enlarged structure and the liquid guiding needle assembly structure of an embodiment of this utility model;

[0020] Figure 4 This is a partial disassembly diagram of the pusher and piston in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the disassembled structure of the medicine storage box and the lid according to an embodiment of the present utility model.

[0022] In the diagram: 1. Push cylinder; 11. Fixed handle; 12. Rotating handle; 13. Rod body; 14. Piston; 2. Air guide needle; 3. Box cover; 4. Medicine storage box; 5. Liquid guide needle; 51. Enclosed expansion structure; 52. Spraying hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This embodiment provides an intraoral drug delivery device, such as... Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, it includes: a medicine storage box 4, the opening of the medicine storage box 4 is detachably provided with a box cover 3, the box cover 3 and the medicine storage box 4 are connected by a thread or by a tight insertion method, as long as the box cover 3 is not easy to detach from the opening of the medicine storage box 4.

[0025] Meanwhile, a liquid guiding needle 5 is connected to the outer wall of one end of the medicine storage box 4. The end of the liquid guiding needle 5 is a closed enlarged structure 51. A continuous inclined sidewall is provided at the intersection of the closed enlarged structure 51 and the liquid guiding needle 5. Multiple spray holes 52 are opened on the continuous inclined sidewall. The openings of the spray holes 52 are inclined to one side away from the axis of the liquid guiding needle 5. The multiple spray holes 52 form a ring-shaped enlarged spray structure. In addition, an air guiding needle 2 is axially inserted into the box cover 3. A push cylinder 1 is connected to the end of the air guiding needle 2. A plug rod is built into the push cylinder 1. Figure 4 As shown, the drug storage box 4 and the liquid guiding needle 5 form a connected drug delivery passage, while the pusher cylinder 1 and the air guiding needle 2 form a gas delivery passage that provides positive pressure inside the drug storage box 4. As long as the stopper moves along the inner wall of the pusher cylinder 1, it compresses the air inside the pusher cylinder 1. Through the air guiding needle 2 as a gas delivery channel, the liquid medicine in the drug storage box 4 can be pushed into the liquid guiding needle 5. The liquid medicine finally reaches the closed enlarged structure 51 and is sprayed out from the opening of the spray hole 52.

[0026] When administering medication into the ear: Insert the end of the instillation needle 5 into the lesion location in the middle ear. Using the hand-held plunger 1, push the stopper rod along the inside of the plunger 1. Specifically, the stopper rod includes a rod body 13 and a piston 14. The piston 14 slides inside the plunger 1. One end of the rod body 13 is connected to the piston 14, and the other end extends out of the plunger 1. Hold the plunger 1 with one hand and push the rod body 13 with the other hand, sliding the piston 14 along the inner wall of the plunger 1, compressing the air inside the plunger 1 and increasing the pressure. The air-guiding needle 2 serves as a ventilation channel, providing positive pressure to the medication reservoir 4, facilitating the delivery of the ear drops through the instillation needle 5 and spraying them from the annular enlarged spray nozzle 52 onto the middle ear wall tissue, directly reaching the lesion location. This eliminates the need to wait for the medication to slowly flow from the outer ear to the middle ear lesion location, saving time and preventing the medication from failing to reach the lesion location, thus ensuring effective treatment.

[0027] In addition, such as Figure 2 As shown, the opening of the spray hole 52 is inclined to one side away from the axis of the liquid guiding needle 5. The purpose of this design is that when the closed enlarged structure 51 of the liquid guiding needle 5 is placed in the middle ear, the opening of the spray hole 52 is actually inclined to spray the liquid onto the inner wall tissue of the middle ear in the direction of the ear outward. This avoids the spray hole 52 being directly set at the end of the closed enlarged structure 51 to shoot the liquid directly into the deeper part of the middle ear, causing discomfort.

[0028] In this embodiment, as Figure 1 As shown, the liquid-conducting needle 5 and the air-conducting needle 2 are of equal length and diameter, and both are made of medical-grade high-density polyethylene, a material widely used in the medical field with moderate hardness. This ensures that the liquid-conducting needle 5 and the air-conducting needle 2 have passages of the same length. This is to prevent liquid from flowing from the drug reservoir 4 through the air-conducting needle 2 into the push tube 1.

[0029] Furthermore, the inner diameters of the liquid-conducting needle 5 and the air-conducting needle 2 are relatively small, ideally controlled within the range of 1-2 mm. This small inner diameter prevents the liquid from the medicine storage box 4 from randomly entering the liquid-conducting needle 5 and the air-conducting needle 2, thus avoiding leakage from the end of the liquid-conducting needle 5, and also prevents the liquid from flowing into the air-conducting needle 2. Since the amount of medicine administered per drip is already small, the small inner diameter allows for precise control of the dosage.

[0030] The end of the enlarged closure structure 51 is a spherical structure to prevent the edge of the enlarged closure structure 51 from protruding and touching the inner wall of the middle ear, thus avoiding pain.

[0031] Furthermore, to avoid obstructing the operator's view during drug administration, both the push tube 1 and the rod 13 are designed with an arc shape, such as... Figure 1 As shown, in this way, the push tube 1 and the rod 13 can be deviated from the axis of the liquid guiding needle 5, so as to avoid the push tube 1 and the rod 13 affecting the operator's administration of the drug through the ear.

[0032] Meanwhile, the end of the push cylinder 1 away from the gas guide needle 2 is connected to a fixed handle 11, and the end of the rod 13 away from the push cylinder 1 is connected to a rotating handle 12. The end of the rotating handle 12 has a hinge notch that is hinged to the end of the fixed handle 11. When administering medication, the four fingers of one hand, excluding the thumb, can be placed on the fixed handle 11, and the thumb can be placed on the rotating handle 12. The five fingers can be pressed together at the same time to rotate the rotating handle 12 around the hinge point with the fixed handle 11. This can reduce the angle between the rotating handle 12 and the fixed handle 11, and at the same time push the rod 13 along the inner side of the push cylinder 1 to push the piston 14 to advance, realizing one-handed operation and freeing the other hand.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intraoral drug delivery device, characterized in that, include: A medicine storage box (4) is provided with a detachable cover (3) at the opening of the medicine storage box (4). A liquid guiding needle (5) is connected to the outer wall of one end of the medicine storage box (4). The end of the liquid guiding needle (5) is a closed enlarged structure (51). A continuous inclined sidewall is provided at the intersection of the closed enlarged structure (51) and the liquid guiding needle (5). A plurality of spray holes (52) are opened on the continuous inclined sidewall. The openings of the spray holes (52) are inclined to the side that deviates from the axis of the liquid guiding needle (5). Multiple spray holes (52) form an enlarged ring spray structure; The cover (3) has an axially inserted air guide needle (2), and the end of the air guide needle (2) is connected to a push cylinder (1), which has a plug rod inside.

2. The intraoral drug delivery device according to claim 1, characterized in that, The liquid-conducting needle (5) and the gas-conducting needle (2) are of equal length and diameter, and both are made of medical high-density polyethylene.

3. The intraoral drug delivery device according to claim 1, characterized in that, The end of the enlarged closed structure (51) is a spherical structure.

4. The intraoral drug delivery device according to claim 1, characterized in that, The piston rod includes a rod body (13) and a piston (14). The piston (14) is slidably inserted into the push cylinder (1). One end of the rod body (13) is connected to the piston (14), and the other end extends out of the push cylinder (1).

5. The intraoral drug delivery device according to claim 4, characterized in that, Both the pusher (1) and the rod (13) are arc-shaped structures; The push cylinder (1) is connected to a fixed handle (11) at one end away from the air guide needle (2), and the rod (13) is connected to a rotating handle (12) at one end away from the push cylinder (1). The end of the rotating handle (12) is provided with a hinge notch that is hinged to the end of the fixed handle (11).

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