External auditory canal applicator
By designing a medicine reservoir and a medicine application mechanism for the external auditory canal, the problem of infection caused by ear picking was solved, and the uniform application of medicine and improved cleanliness of the external auditory canal were achieved, ensuring safety and cleanliness during use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUN YAT SEN MEMORIAL HOSPITAL SUN YAT SEN UNIV
- Filing Date
- 2024-11-23
- Publication Date
- 2026-04-14
AI Technical Summary
In daily life, the habit of picking one's ears can easily damage the skin inside the ear canal, and unsterilized tools may cause infection. Existing medication applicators are difficult to apply medication evenly in the narrow external auditory canal and are not easy to clean, affecting cleanliness and safety.
An external auditory canal medication applicator was designed, comprising a medication reservoir, a medication pushing component, and a medication application mechanism. Through threaded connections and a sealing ring structure, it achieves uniform application of the ointment and convenient cleaning. The application head is disposable to ensure cleanliness.
It achieves uniform application of medication to the external auditory canal, reduces the risk of infection, maintains the integrity of hearing function, and improves the cleanliness of the applicator, reducing the possibility of cross-infection.
Smart Images

Figure CN224113111U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical assistive device technology, specifically to an external auditory canal medication applicator. Background Technology
[0002] External auditory canal: The external auditory canal is a curved tube that extends medially from the external auditory meatus deep within the concha cavity to the tympanic membrane. It transmits sound waves collected by the auricle to the tympanic membrane, first inward and upward, then inward and upward, and finally inward and downward. In adults, it is about 2.5 to 3.5 cm long. Due to the tilted position of the tympanic membrane, the anteroinferior wall of the external auditory canal is longer than the posterosuperior wall.
[0003] The lateral third of the external auditory canal is based on cartilage, forming the cartilaginous external auditory canal, while the medial two-thirds is based on bone, forming the bony external auditory canal. The junction between the two is relatively narrow; the narrowest point is about 2 cm from the external auditory meatus. The narrowest part of the external auditory canal is called the isthmus, which serves to prevent foreign objects from entering the external auditory canal and damaging the tympanic membrane.
[0004] In daily life, many people have the habit of cleaning their ears. When the ear cleaner uses too much force, it can damage the skin inside the ear canal. Also, because the ear cleaning tools are not sterilized, the ear canal can become infected with bacteria or fungi, leading to inflammation or sores inside. It is necessary to apply medicine to kill bacteria and disinfect. However, the diameter of the human ear canal is very small, making it difficult to apply medicine evenly to the ear canal. Therefore, it is necessary to use a medicine applicator. Utility Model Content
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] An external auditory canal medication applicator includes a medication reservoir. Finger clamps are symmetrically fixed to both ends of the left side of the reservoir. A medication pushing assembly is located inside the reservoir, and a medication application mechanism is located at the right end. The medication application mechanism includes a sealing ring, the interior of which is movably connected to the outer wall of the right end of the reservoir. A threaded section is formed on the inner wall of the sealing ring, and a threaded section is formed on the outer wall of the right end of the reservoir. A medication delivery tube is fixedly connected to the middle of the right end of the sealing ring. An opening is formed through the interior of the delivery tube, and a threaded section is formed on the inner wall of the opening. A connector is movably installed inside the opening, and a threaded section is formed on the outer wall of the left end of the connector. A connected medication application rod is fixedly installed at the right end of the connector. Multiple sets of equidistant medication outlets are formed through the inner wall of the right end of the medication application rod, and an application head is sleeved on the outer side of the right end of the medication application rod.
[0007] Preferably, the first threaded section and the second threaded section are threaded together, and the drug delivery cylinder is connected to the drug application rod through a port and a connector.
[0008] Preferably, the threaded section three and the threaded section four are threaded together.
[0009] Preferably, the application stick can be a rubber stick.
[0010] Preferably, the applicator head is a disposable device and is made of a soft material, which has a certain adsorption effect.
[0011] Preferably, the drug delivery assembly includes a sleeve, the outside of which is fixedly connected to the middle of the left end of the drug storage cylinder, a push rod is slidably connected inside the sleeve, a push plate is fixedly connected to one end of the push rod, a piston plate is fixedly connected to the other end of the push rod, and a rubber pad is glued to the outside of the piston plate.
[0012] Preferably, the piston plate is movably connected to the inside of the medicine storage cylinder, and the rubber pad is in contact with the inner wall of the medicine storage cylinder.
[0013] Preferably, the piston plate is movably connected to the inside of the medicine storage cylinder, and the rubber pad is in contact with the inner wall of the medicine storage cylinder.
[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0015] 1. This utility model provides an external auditory canal medication applicator. Through the cooperation of a sleeve, push rod, push plate, piston plate, and rubber pad, the medication in the storage cylinder is conveniently pushed into the delivery cylinder by the push rod and piston plate, which in turn facilitates the application of the medication to the applicator head, making it convenient to apply the medication evenly to the patient's external auditory canal.
[0016] 2. This utility model provides an external auditory canal medication applicator. Through the medication applicator mechanism, with the cooperation of a sealing ring, threaded section one, threaded section two, medication delivery tube, opening, threaded section three, connector, threaded section four, medication applicator stick, medication outlet, and applicator head, multiple sets of medication outlets can achieve the effect of uniform medication delivery and application. This allows for the sterilization and disinfection of the patient's external auditory canal without affecting the patient's hearing. The threaded relationship between the four sets of threaded sections facilitates the disassembly of the medication delivery tube and medication applicator stick, thereby allowing for the cleaning of residual ointment inside and ensuring the cleanliness of the applicator's interior. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the external auditory canal medication applicator of this utility model;
[0018] Figure 2 This is a structural schematic diagram of the cross-sectional view of the external auditory canal medication applicator of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the drug delivery component of this utility model;
[0020] Figure 4 This is a schematic diagram of the drug application mechanism of this utility model;
[0021] Figure 5 This is a structural schematic diagram showing the details of the drug application mechanism of this utility model.
[0022] In the diagram: 1. Medicine storage cylinder; 2. Finger clamp plate; 3. Medicine pushing assembly; 4. Medicine application mechanism; 31. Sleeve; 32. Push rod; 33. Push plate; 34. Piston plate; 35. Rubber pad; 41. Sealing ring; 42. Threaded section one; 43. Threaded section two; 44. Medicine delivery cylinder; 45. Through port; 46. Threaded section three; 47. Connector; 48. Threaded section four; 49. Medicine application rod; 410. Medicine outlet; 411. Application head. Detailed Implementation
[0023] The present invention will be further described in detail below with reference to embodiments:
[0024] like Figure 1-5 As shown, this utility model provides an external auditory canal medication applicator, including a medication storage cylinder 1. The left end of the medication storage cylinder 1 is symmetrically fixed with finger clamps 2 on both sides. The inside of the medication storage cylinder 1 is provided with a medication pushing component 3, and the right end of the medication storage cylinder 1 is provided with a medication application mechanism 4.
[0025] The medicine storage cylinder 1 and the medicine delivery cylinder 44 are internally connected.
[0026] like Figure 3 As shown, the drug delivery assembly 3 includes a sleeve 31. The outside of the sleeve 31 is fixedly connected to the middle of the left end of the drug storage cylinder 1. A push rod 32 is slidably connected inside the sleeve 31. A push plate 33 is fixedly connected to one end of the push rod 32, and a piston plate 34 is fixedly connected to the other end of the push rod 32. A rubber pad 35 is glued to the outside of the piston plate 34.
[0027] The piston plate 34 is movably connected to the inside of the medicine storage cylinder 1, and the rubber pad 35 is in contact with the inner wall of the medicine storage cylinder 1.
[0028] The sleeve 31 serves as a stable support structure, providing reliable guidance for the movement of the push rod 32. When the push rod 32 pushes the push plate 33, which in turn drives the piston plate 34 to move, the piston plate 34 can generate stable pressure inside the medicine storage cylinder 1. The presence of the rubber pad 35 further enhances the sealing between the piston plate 34 and the inner wall of the medicine storage cylinder 1, ensuring that no ointment leakage occurs during the pushing process.
[0029] like Figure 4-5As shown, the application mechanism 4 includes a sealing ring 41. The interior of the sealing ring 41 is movably connected to the outer wall of the right end of the medicine storage cylinder 1. The inner wall of the sealing ring 41 has a threaded section 42, and the outer wall of the right end of the medicine storage cylinder 1 has a threaded section 43. A medicine delivery cylinder 44 is fixedly connected to the middle of the right end of the sealing ring 41. A through-hole 45 is opened through the interior of the medicine delivery cylinder 44. A threaded section 46 is opened through the inner wall of the through-hole 45. A connector 47 is movably installed inside the through-hole 45. A threaded section 48 is opened on the outer wall of the left end of the connector 47. A connected application rod 49 is fixedly installed on the right end of the connector 47. Multiple sets of equidistantly distributed medicine outlet holes 410 are opened through the inner wall of the right end of the application rod 49. An application head 411 is sleeved on the outer side of the right end of the application rod 49.
[0030] The threaded section 42 and the threaded section 43 are connected by threads, and the delivery cylinder 44 is connected to the application rod 49 through the port 45 and the connector 47.
[0031] The threaded connection is between threaded section 3 (46) and threaded section 4 (48).
[0032] The application stick 49 can be a rubber stick.
[0033] The applicator head 411 is a disposable device and is made of a soft material, which has a certain adsorption effect.
[0034] The sealing ring 41, the medicine storage cylinder 1, the medicine delivery cylinder 44, and the connector 47 are all connected by threaded ends, which facilitates disassembly. By disassembling the medicine delivery cylinder 44 and the medicine application stick 49, the various components inside the medicine applicator can be cleaned to ensure the cleanliness of the medicine applicator. A clean medicine applicator can prevent bacterial growth, reduce the risk of cross-infection, and provide a safer and more reliable guarantee for the patient's treatment.
[0035] The applicator head 411 is fitted onto the applicator stick 49. After the ointment is applied, it can be removed and a new applicator head 411 can be replaced for the next use.
[0036] The working principle of this external auditory canal medicator will be explained in detail below.
[0037] like Figure 1-5As shown, before use, the medicine storage cylinder 1 and the medicine delivery cylinder 44 are separated. At this time, the ointment can be squeezed into the medicine storage cylinder 1. Then, using the thread relationship between the first thread section 42 and the second thread section 43, the sealing ring 41 is fitted onto the top of the medicine storage cylinder 1, thus completing the installation of the medicine delivery cylinder 44. Then, the medicine application rod 49 is inserted into the external auditory canal. At this time, the finger clamp 2 can be held with the fingers, and then the push plate 33 is pressed with the thumb, so that the push plate 33 squeezes the push rod 32, so that the push rod 32 pushes the piston plate 34, and the piston plate 34 squeezes the ointment in the medicine storage cylinder 1 into the medicine delivery cylinder 44. Then, the ointment is squeezed into the medicine application rod 49 through the opening 45 and the connector 47. Finally, the ointment can be squeezed out through the medicine outlet 410 and enter the application head 411. At this time, the finger clamp 2 is gradually rotated so that the ointment on the surface of the application head 411 can be evenly applied into the ear canal, thus completing the external auditory canal ointment application operation.
[0038] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. An external auditory canal medication applicator, comprising a medication reservoir (1), wherein finger clips (2) are symmetrically fixedly connected to both ends of the left end of the medication reservoir (1), characterized in that: The medicine storage cylinder (1) is equipped with a medicine pushing component (3) inside, and a medicine coating mechanism (4) is provided at the right end of the medicine storage cylinder (1). The application mechanism (4) includes a sealing ring (41). The interior of the sealing ring (41) is movably connected to the outer wall of the right end of the medicine storage cylinder (1). The inner wall of the sealing ring (41) is provided with a threaded section one (42). The outer wall of the right end of the medicine storage cylinder (1) is provided with a threaded section two (43). The middle of the right end of the sealing ring (41) is fixedly connected to a medicine delivery cylinder (44). The inside of the medicine delivery cylinder (44) is provided with a through opening (45). The inner wall of the through opening (45) is provided with a threaded section three (46). The inside of the through opening (45) is movably installed with a connector (47). The outer wall of the left end of the connector (47) is provided with a threaded section four (48). The right end of the connector (47) is fixedly installed with a connected application rod (49). The inner wall of the right end of the application rod (49) is provided with multiple sets of equidistantly distributed medicine outlet holes (410). The outer side of the right end of the application rod (49) is fitted with an application head (411).
2. The external auditory canal medicated applicator according to claim 1, characterized in that: The first threaded section (42) and the second threaded section (43) are threaded together, and the delivery tube (44) is connected to the application rod (49) through the port (45) and the connector (47).
3. The external auditory canal medicated applicator according to claim 2, characterized in that: The threaded connection between threaded section three (46) and threaded section four (48) is as follows.
4. The external auditory canal medicated applicator according to claim 3, characterized in that: The application stick (49) can be a rubber stick.
5. The external auditory canal medicator according to claim 4, characterized in that: The applicator (411) is a one-time use device and is made of a soft material, which has a certain adsorption effect.
6. The external auditory canal medicated applicator according to claim 1, characterized in that: The drug delivery assembly (3) includes a sleeve (31), the outside of which is fixedly connected to the middle of the left end of the drug storage cylinder (1), and a push rod (32) is slidably connected inside the sleeve (31). A push plate (33) is fixedly connected to one end of the push rod (32), and a piston plate (34) is fixedly connected to the other end of the push rod (32). A rubber pad (35) is glued to the outside of the piston plate (34).
7. The external auditory canal medicated applicator according to claim 6, characterized in that: The piston plate (34) is movably connected to the inside of the medicine storage cylinder (1), and the rubber pad (35) is in contact with the inner wall of the medicine storage cylinder (1).
8. The external auditory canal medicated applicator according to claim 1, characterized in that: The medicine storage cylinder (1) is internally connected to the medicine delivery cylinder (44).