External auditory canal flushing tool
By employing a hemispherical block and hemispherical groove snap-fit structure and a quick-release mechanism in the external auditory canal irrigation tool, the problem of needle puncture caused by the detachment of the tubing has been solved, thus improving safety and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QIANHAI LIFE (GUANGZHOU) GENERAL HOSPITAL CO LTD
- Filing Date
- 2025-04-07
- Publication Date
- 2026-05-15
AI Technical Summary
The tubing of existing external auditory canal cleaning devices is prone to detaching from the needle, which could cause the needle to puncture the patient's ear canal, posing a safety hazard.
An external auditory canal irrigation tool was designed, which uses a hemispherical block and hemispherical groove snap-fit structure to fix the tubing, combined with a quick-release mechanism and a pushing mechanism to ensure a stable connection between the tubing and the needle and easy disassembly.
It improves the safety and convenience of external auditory canal cleaning, avoids damage to the ear canal by the needle, and enhances the stability of the connection and the ease of disassembly.
Smart Images

Figure CN224235648U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of external auditory canal cleaning technology, and in particular to an external auditory canal rinsing tool. Background Technology
[0002] Earwax is a protective substance secreted by glands in the skin of the external auditory canal. If earwax accumulates excessively, it can cause ear canal blockage, leading to symptoms such as hearing loss, ear fullness, or ear pain. Furthermore, if foreign objects (such as small insects or grains of sand) accidentally enter the external auditory canal, these objects may cause discomfort or infection. Therefore, it is necessary to clean the external auditory canal. External auditory canal cleaning is a common ear care method. Regular cleaning of the external auditory canal can prevent earwax buildup and infection, especially during activities that easily lead to moist ear canals, such as swimming and diving. Cleaning helps reduce the risk of bacterial growth.
[0003] Current external auditory canal cleaning devices typically consist of a scalp needle tube attached to the tip of a syringe needle. Because the tube is relatively loose between the needle and the tube, it may detach from the needle during use, causing the needle to puncture the patient's external auditory canal and damage it. Therefore, this application proposes an external auditory canal irrigation tool to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tool for rinsing the external auditory canal.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An external auditory canal irrigation tool includes a syringe, an injection needle, and a tubing. The tubing is sleeved on the outside of the injection needle. Two symmetrically distributed hemispherical blocks are integrally formed on the outside of the injection needle. Two symmetrically distributed hemispherical grooves are integrally formed on the inner wall of the tubing, and the hemispherical blocks are engaged with the hemispherical grooves. A needle connector cap is fixedly connected to one end of the injection needle. The interface of the syringe is detachably connected to the needle connector cap via a quick-release mechanism.
[0007] The quick-release mechanism includes a mounting base, which is fixedly connected to the outside of the syringe interface. The mounting base has two symmetrically distributed and open L-shaped grooves. An L-shaped slider is slidably connected within each L-shaped groove. Two springs are installed within each L-shaped groove, with both ends of the springs fixed to the L-shaped slider and the mounting base, respectively. A pressing rod is fixedly connected to one end of the L-shaped slider, and the pressing rod passes through the mounting base. The inner circumference of the needle connector cap has two symmetrically distributed slots, and the L-shaped slider engages with these slots. The outer side of the mounting base is provided with a pushing mechanism to disengage the needle connector cap.
[0008] As a further embodiment of this utility model, the pushing mechanism includes a ring, which is sleeved on the outside of the mounting base. Multiple compression springs are provided between the ring and the syringe, and the two ends of the compression springs are fixed to the ring and the syringe respectively. The pressing rod is located between the ring and the syringe.
[0009] As a further embodiment of this invention, multiple compression springs are arranged in a ring around the center of the mounting base on the outer side of the mounting base.
[0010] As a further improvement of this invention, the syringe has a viewing window on its outer side and multiple equidistant scale lines on its outer side.
[0011] As a further embodiment of this utility model, it also includes an elastic clamping mechanism, an inclined surface, and an arc chamfer. The inclined surface is located at one end of the L-shaped slider outside the L-shaped groove, and the arc chamfer is located at one end of the injection needle inside the tubing. The elastic clamping mechanism includes two elastic plates symmetrically and fixedly connected to one side of the needle connecting cap. One end of the two elastic plates is fixedly connected to an arc-shaped clamping block for elastically clamping the tubing.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. By using the hemispherical groove and hemispherical block together, after the tubing is placed over the outside of the injection needle, the hemispherical block is inserted into the hemispherical groove to limit the tubing, so that the tubing will not detach from the injection needle during use, avoiding damage to the ear canal by the injection needle. At the same time, the injection needle supports the tubing inside the tubing, preventing the tubing from bending, thus improving the safety of external ear canal cleaning and the effectiveness of the rinsing tool.
[0014] 2. The quick-release mechanism connects the syringe and the injection needle, providing a more stable connection compared to traditional methods. It also facilitates the disassembly, cleaning, or replacement of the injection needle, thus improving the effectiveness of the rinsing tool.
[0015] 3. By using a push mechanism, when the injection needle needs to be disassembled, the push mechanism will automatically detach the needle connector from the syringe, making it easier to disassemble the injection needle and improving the convenience of disassembling the flushing tool. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of a first embodiment of an external auditory canal irrigation tool proposed in this utility model;
[0017] Figure 2 This is a partially enlarged cross-sectional view of a first embodiment of the external auditory canal irrigation tool proposed in this utility model;
[0018] Figure 3 This is a schematic diagram of the quick-release mechanism structure of a first embodiment of the external auditory canal irrigation tool proposed in this utility model;
[0019] Figure 4 This is a three-dimensional structural diagram of a second embodiment of an external auditory canal irrigation tool proposed in this utility model;
[0020] Figure 5 This is a partially enlarged cross-sectional view of a second embodiment of the external auditory canal irrigation tool proposed in this utility model.
[0021] In the diagram: 1. Syringe; 2. Scale line; 3. Viewing window; 4. Needle connector cap; 5. Injection needle; 6. Tube; 7. Quick release mechanism; 701. Mounting base; 702. L-shaped groove; 703. L-shaped slider; 704. Spring; 705. Pressing rod; 8. Slot; 9. Pushing mechanism; 901. Ring; 902. Compression spring; 10. Hemispherical groove; 11. Hemispherical block; 12. Elastic clamping mechanism; 1201. Elastic plate; 1202. Arc-shaped clamping block; 13. Inclined surface; 14. Chamfered arc surface. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. The described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] Example 1
[0024] Reference Figures 1-3An external auditory canal irrigation tool includes a syringe 1, an injection needle 5, and a tubing 6. The tubing 6 is fitted over the outside of the injection needle 5. Two symmetrically distributed hemispherical blocks 11 are integrally formed on the outside of the injection needle 5. Two symmetrically distributed hemispherical grooves 10 are integrally formed on the inner wall of the tubing 6, and the hemispherical blocks 11 engage with the hemispherical grooves 10. A needle connector cap 4 is welded to one end of the injection needle 5. The interface of the syringe 1 is detachably connected to the needle connector cap 4 via a quick-release mechanism 7. In use, the tubing 6 is fitted over the outside of the injection needle 5, and the syringe... The hemispherical block 11 on the outside of the needle head 5 will compress the tubing 6 and cause it to deform. When the tubing 6 moves and the hemispherical groove 10 aligns with the hemispherical block 11, the shape of the tubing 6 will be restored, and the hemispherical block 11 will be inserted into the hemispherical groove 10 to limit the tubing 6. This prevents the tubing 6 from detaching from the injection needle head 5 during use, thus avoiding damage to the ear canal caused by the injection needle head 5. At the same time, the injection needle head 5 supports the tubing 6 inside the tubing 6, preventing the tubing 6 from bending and improving the safety of external ear canal cleaning and the effectiveness of the rinsing tool.
[0025] The quick-release mechanism 7 includes a mounting base 701, which is welded to the outside of the syringe 1 interface. The mounting base 701 has two symmetrically distributed, open L-shaped grooves 702. An L-shaped slider 703 is slidably connected within each L-shaped groove 702. Two springs 704 are installed within each L-shaped groove 702, with both ends of each spring 704 fixed to the L-shaped slider 703 and the mounting base 701, respectively. A pressing rod 705 is welded to one end of the L-shaped slider 703, and the pressing rod 705 passes through the mounting base 701. Two symmetrically distributed slots 8 are formed on the inner circumference of the needle connecting cap 4, and the L-shaped slider 703 engages with the slots 8. The outer side of the mounting base 701 is provided with a pusher for the needle connecting cap 4. When the disengaged push mechanism 9 needs to install the injection needle 5 with the syringe 1, the L-shaped slider 703 is pressed into the L-shaped groove 702 by the pressing rod 705, so that the L-shaped slider 703 is fully inserted into the L-shaped groove 702 and the spring 704 is squeezed. Then the needle connecting cap 4 is installed on the outside of the mounting base 701. After the mounting base 701 and the inside of the needle connecting cap 4 are fully fitted, the pressing rod 705 is released. At this time, the L-shaped slider 703 will be reset under the force of the spring 704, so that the L-shaped slider 703 is locked into the slot 8, thereby fixing the needle connecting cap 4 and completing the installation of the injection needle 5. Then the external auditory canal can be cleaned by the syringe 1.
[0026] In this invention, the pushing mechanism 9 includes a ring 901, which is sleeved on the outside of the mounting base 701. Multiple compression springs 902 are provided between the ring 901 and the syringe 1, with both ends of the springs 902 fixed to the ring 901 and the syringe 1 respectively. A pressing rod 705 is located between the ring 901 and the syringe 1. When installing the injection needle 5, the needle connecting cap 4 will press the ring 901 to move, and the ring 901 will press the compression springs 902. When it is necessary to adjust the injection needle 5... During disassembly, the L-shaped slider 703 is pushed out of the slot 8 by pressing the lever 705. At this time, the compression spring 902, which is under compression, will push the ring 901 to move. The ring 901 pushes the needle connecting cap 4 out of the mounting base 701, thereby facilitating the disassembly, cleaning or replacement of the injection needle 5. Multiple compression springs 902 are distributed in a ring around the center of the mounting base 701 on the outside of the mounting base 701. The outside of the syringe 1 is provided with a viewing window 3 and multiple equidistant scale lines 2.
[0027] Working principle: When needed, the tubing 6 is placed over the outside of the injection needle 5. The hemispherical block 11 on the outside of the injection needle 5 will compress the tubing 6, causing it to deform. When the tubing 6 moves and aligns with the hemispherical groove 10, the shape of the tubing 6 returns to its original state, allowing the hemispherical block 11 to engage within the hemispherical groove 10, thus limiting the tubing 6 and preventing it from detaching from the injection needle 5 during use. This avoids damage to the ear canal caused by the injection needle 5. Simultaneously, the injection needle 5 supports the tubing 6 from within, preventing it from bending and improving the safety and effectiveness of ear canal cleaning. Then, the L-shaped slide is pressed using the pressing lever 705. Block 703 moves into the L-shaped groove 702, so that the L-shaped slider 703 is fully inserted into the L-shaped groove 702 and compresses the spring 704. Then, the needle connecting cap 4 is installed on the outside of the mounting base 701. At the same time, the needle connecting cap 4 will compress the ring 901 and move. The ring 901 will compress the compression spring 902. When the mounting base 701 and the inside of the needle connecting cap 4 are completely in contact, the pressing rod 705 is released. At this time, the L-shaped slider 703 will return to its original position under the force of the spring 704, so that the L-shaped slider 703 is inserted into the slot 8, thereby fixing the needle connecting cap 4 and completing the installation of the injection needle 5. Then, the external auditory canal can be cleaned by the syringe 1.
[0028] Real-time Example 2
[0029] Reference Figures 4-5Based on Embodiment 1, the following technical features are added: it also includes an elastic clamping mechanism 12, a bevel 13 and an arc chamfer 14. The bevel 13 is located at one end of the L-shaped slider 703 outside the L-shaped groove 702. When the needle connecting cap 4 is installed on the mounting base 701, the needle connecting cap 4 can push the L-shaped slider 703 into the L-shaped groove 702 through the bevel 13 of the L-shaped slider 703, so that the operator does not need to manually press the L-shaped slider 703 to move it, which improves the convenience of installing the injection needle 5.
[0030] The curved chamfer 14 is set at one end of the injection needle 5 inside the tubing 6. When the tubing 6 is installed onto the injection needle 5, the curved chamfer 14 facilitates the injection needle 5 to enter the tubing 6, increasing the ease of installation of the tubing 6.
[0031] The elastic clamping mechanism 12 includes two elastic plates 1201 symmetrically welded to one side of the needle connecting cap 4. One end of each elastic plate 1201 is welded with an arc-shaped clamping block 1202 for elastically clamping the hose 6. After the hose 6 is installed, the elasticity of the elastic plate 1201 can be used to make the arc-shaped clamping block 1202 assist in clamping the hose 6, thereby making the hose 6 more stable.
[0032] Furthermore, 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 external auditory canal irrigation tool, comprising a syringe (1), an injection needle (5), and a tubing (6), characterized in that, The tubing (6) is fitted over the outside of the injection needle (5). The outside of the injection needle (5) has two symmetrically distributed hemispherical blocks (11) integrally formed. The inner wall of the tubing (6) has two symmetrically distributed hemispherical grooves (10) integrally formed. The hemispherical blocks (11) are engaged with the hemispherical grooves (10). One end of the injection needle (5) is fixedly connected to a needle connector cap (4). The interface of the syringe (1) is detachably connected to the needle connector cap (4) through a quick-release mechanism (7). The quick-release mechanism (7) includes a mounting base (701), which is fixedly connected to the outside of the syringe (1) interface. The mounting base (701) has two symmetrically distributed and open L-shaped grooves (702) inside. An L-shaped slider (703) is slidably connected in the L-shaped groove (702). Two springs (704) are provided in the L-shaped groove (702), and the two ends of the springs (704) are fixed to the L-shaped slider (703) and the mounting base (701) respectively. One end of the L-shaped slider (703) is fixedly connected to a pressing rod (705), and the pressing rod (705) passes through the mounting base (701). The inner circumference of the needle connecting cap (4) has two symmetrically distributed slots (8), and the L-shaped slider (703) is engaged with the slots (8). The outside of the mounting base (701) is provided with a pushing mechanism (9) for pushing the needle connecting cap (4) to disengage.
2. The external auditory canal irrigation tool according to claim 1, characterized in that, The pushing mechanism (9) includes a ring (901) which is sleeved on the outside of the mounting base (701). Multiple compression springs (902) are provided between the ring (901) and the syringe (1), and the two ends of the compression springs (902) are fixed to the ring (901) and the syringe (1) respectively. The pressing rod (705) is located between the ring (901) and the syringe (1).
3. The external auditory canal irrigation tool according to claim 2, characterized in that, Multiple compression springs (902) are arranged in a ring around the center of the mounting base (701) on the outer side of the mounting base (701).
4. The external auditory canal irrigation tool according to claim 3, characterized in that, The syringe (1) has a viewing window (3) on its outer side and multiple equidistant scale lines (2) on its outer side.
5. The external auditory canal irrigation tool according to claim 1, characterized in that, It also includes an elastic clamping mechanism (12), a bevel (13) and an arc chamfer (14). The bevel (13) is located at one end of the L-shaped slider (703) outside the L-shaped groove (702). The arc chamfer (14) is located at one end of the injection needle (5) inside the tubing (6). The elastic clamping mechanism (12) includes two elastic plates (1201) symmetrically fixedly connected to one side of the needle connecting cap (4). One end of the two elastic plates (1201) is fixedly connected to an arc-shaped clamping block (1202) for elastically clamping the tubing (6).