Injection needle assembly used in ear cavity

Abstract

The utility model discloses a syringe needle assembly used in ear cavity, including syringe needle, injection cavity, spray orifice, baffle plate and limit subassembly, the injection cavity is provided in the syringe needle and is communicated with one end of syringe needle, the spray orifice is provided on the side wall of syringe needle and is communicated with injection cavity. According to the utility model, the injection needle and the external injector are arranged to be of a separated structure, so that medical personnel can place the injection needle in the ear cavity of a patient in advance, and the depth of the injection needle placed in the ear cavity is properly adjusted through the limiting assembly, so that the injection assembly can be suitable for different users, and the use is convenient. Meanwhile, by means of the separated structure, medical staff can conveniently adjust the syringe needle, the situation that the whole syringe needs to be held for injection work is avoided, the operation difficulty coefficient is greatly reduced, meanwhile, the situation that a patient is injured is effectively avoided, and the novel syringe is safe, efficient and practical.

Description

Technical Field

[0001] This utility model relates to an ear cavity medical device, specifically an injection needle assembly for use in the ear cavity, belonging to the field of ear cavity medical device technology. Background Technology

[0002] Intratympanic injection is a procedure performed under aseptic conditions to directly inject medication into the middle ear cavity, thereby treating otitis media. Otitis media is an inflammation of the middle ear mucosa caused by bacterial or viral infection, which can cause symptoms such as ear pain, hearing loss, and tinnitus. In severe cases, it can lead to tympanic membrane perforation and suppurative otitis media. Injecting medication into the middle ear using a syringe is a relatively common treatment method in otology.

[0003] However, most existing otoscopic injection devices have various problems. For example, in a tympanic syringe disclosed in announcement number CN213758918U, although the needle can adapt to the shape of the ear, ensuring that the needle can be smoothly inserted into the ear and avoiding scratches or punctures to the inner ear wall when the needle enters the ear, thus improving safety, in this technical solution and most current otoscopic injection devices, the syringe body and the needle are mostly integrated. When using them, medical staff still need to hold the syringe and then insert the needle into the ear cavity. In this process, in order to avoid injury to the patient, medical staff need to have extremely high stability when holding the syringe. Even a slight deviation or shaking can lead to injury to the patient, posing a great safety hazard. Summary of the Invention

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to solve the aforementioned shortcomings of existing technologies by proposing an injection needle assembly for use in the ear cavity.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An intraocular injection needle assembly includes an injection needle, an injection cavity, a spray hole, a baffle, and a limiting component. The injection cavity is disposed inside the injection needle and communicates with one end of the injection needle. The spray hole is disposed on the side wall of the injection needle and communicates with the injection cavity. The baffle is disposed inside the spray hole and is made of a flexible material. Multiple baffles are disposed inside the spray hole, and the multiple baffles are combined to form a circular structure, which seals and isolates the injection cavity from the external environment.

[0007] The limiting component is connected to the outside of the injection needle, and the limiting component includes a limiting seat and a clamp. The limiting seat, which has a disc structure, has a through hole at its axis. The limiting seat is slidably sleeved on the outside of the injection needle through the through hole, and an installation cavity is provided inside the limiting seat. The clamp is slidably connected in the installation cavity, and one end abuts against the outer wall of the injection needle.

[0008] As a further improvement of this utility model: the top end of the injection needle is coaxially fixed with a connecting tube, and the outer wall of the connecting tube is provided with threads.

[0009] As a further improvement of this utility model: multiple spray holes are equidistantly arranged on the injection needle head, and the multiple spray holes are evenly distributed on the outer wall of the injection needle head.

[0010] As a further embodiment of this utility model: the limiting component further includes a linkage plate and a pressing plate. The pressing plate is slidably engaged in the mounting cavity of the limiting seat and partially protrudes from the outer wall of the limiting seat. The center of the linkage plate is rotatably engaged in the mounting cavity of the limiting seat, and one end of the linkage plate is rotatably connected to the pressing plate, and the other end is rotatably connected to the clamp.

[0011] As a further improvement of this utility model: a return spring is abutted against the inner wall of the mounting cavity of the limiting seat, and one end of the return spring abuts against the clamp.

[0012] As a further embodiment of this utility model: an endoscope catheter is fixed at the center of the injection cavity, and a through hole is provided through the side wall of the injection needle. One end of the endoscope catheter is bent and connected to the through hole.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, by setting the injection needle and external syringe as separate structures, medical personnel can place the injection needle into the patient's ear canal in advance, and adjust the depth of the injection needle into the ear canal appropriately through the limiting component. This makes the injection component suitable for different users. At the same time, the separate structure also makes it easier for medical personnel to adjust the injection needle, avoiding the need to hold the entire syringe for injection, greatly reducing the difficulty of operation, and effectively preventing patient injury. It is safe, efficient and practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the injection needle structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal connection structure of the injection cavity of this utility model;

[0018] Figure 4 This is a schematic diagram of the limiting component structure of this utility model.

[0019] In the diagram: 1. Injection needle, 2. Injection chamber, 3. Spray nozzle, 4. Baffle, 5. Limiting assembly, 51. Limiting seat, 52. Clamp, 53. Linkage plate, 54. Pressing plate, 55. Reset spring, 6. Connecting tube, 7. Endoscope catheter. Detailed Implementation

[0020] 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.

[0021] Example 1, as Figures 1 to 4 As shown, an injection needle assembly for use in the ear cavity includes an injection needle 1, an injection cavity 2, a nozzle 3, a baffle 4, and a limiting component 5. The injection cavity 2 is disposed inside the injection needle 1 and communicates with one end of the injection needle 1. The nozzle 3 is disposed on the side wall of the injection needle 1 and communicates with the injection cavity 2. The baffle 4 is disposed inside the nozzle 3 and is made of flexible material. Multiple baffles 4 are disposed inside the nozzle 3, and multiple baffles 4 are combined to form a circular structure, which seals and isolates the injection cavity 2 from the external environment.

[0022] The limiting component 5 is connected to the outside of the injection needle 1, and the limiting component 5 includes a limiting seat 51 and a clamp 52. The limiting seat 51, which has a disc structure, has a through hole at its axis. The limiting seat 51 is slidably sleeved on the outside of the injection needle 1 through the through hole, and an installation cavity is provided inside the limiting seat 51. The clamp 52 is slidably connected in the installation cavity, and one end abuts against the outer wall of the injection needle 1.

[0023] In this invention, by setting the injection needle 1 and the external syringe as separate structures, medical personnel can place the injection needle 1 into the patient's ear canal in advance, and adjust the depth of the injection needle 1 into the ear canal appropriately through the limiting component 5. This makes the injection component suitable for different users. At the same time, the separate structure also makes it easier for medical personnel to adjust the injection needle 1, avoiding the need to hold the entire syringe for injection, greatly reducing the difficulty of operation, and effectively preventing patient injury. It is safe, efficient and practical.

[0024] Example 2, as Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0025] The injection needle 1 is coaxially fixed to the top end of the connector 6, and the outer wall of the connector 6 is threaded, so that the injection needle 1 can be quickly connected to an external syringe.

[0026] Multiple nozzles 3 are evenly distributed on the outer wall of the injection needle 1. The multiple nozzles 3 are evenly distributed on the outer wall of the injection needle 1. The arrangement of multiple nozzles 3 enables the injection needle 1 to evenly spray the medicine into the ear cavity when spraying the medicine.

[0027] The limiting component 5 also includes a linkage plate 53 and a pressing plate 54. The pressing plate 54 is slidably engaged in the mounting cavity of the limiting seat 51 and partially protrudes from the outer wall of the limiting seat 51. The center of the linkage plate 53 is rotatably engaged in the mounting cavity of the limiting seat 51. One end of the linkage plate 53 is rotatably connected to the pressing plate 54, and the other end is rotatably connected to the clamp 52. The pressing plate 54 drives the linkage plate 53 to move, thereby driving the clamp 52 to slide, so as to achieve rapid adjustment of the clamp 52.

[0028] A return spring 55 is abutted against the inner wall of the mounting cavity of the limiting seat 51. One end of the return spring 55 abuts against the clamp 52. The spring force of the return spring 55 pushes the clamp 52, thereby enabling the clamp 52 to abut against the injection needle 1 and clamp the injection needle 1.

[0029] An endoscope catheter 7 is fixed at the center of the injection chamber 2, and a through hole is provided through the side wall of the injection needle 1. One end of the endoscope catheter 7 is bent and connected to the through hole. The endoscope catheter 7 allows the endoscope to be placed in the injection needle 1 during use, which is convenient for observation.

[0030] When using this ear canal medical device, first place the injection needle 1 into the patient's ear canal. During placement, adjust the position of the limiting seat 51 on the injection needle 1 according to the depth of the patient's ear canal. During adjustment, push the pressing plate 54, which in turn drives the clamp 52 to move through the linkage plate 53, causing the clamp 52 to separate from the injection needle 1. At this time, the limiting seat 51 can slide freely on the injection needle 1 until the appropriate position is reached. The return spring 55 pushes the clamp 52 to reset and locks the limiting seat 51 on the injection needle 1. Then, connect the liquid guide tube of the external syringe to the connecting tube 6, and inject the medicine into the injection chamber 2 through the external syringe. During injection, the baffle 4 is deformed by pressure, and the nozzle 3 opens, allowing the medicine to spray out.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An injection needle assembly for use in the ear cavity comprising an injection needle (1), an injection chamber (2), a jet (3), a baffle (4) and a limiting assembly (5), characterized in that, The injection cavity (2) is arranged inside the injection needle (1) and penetrates one end of the injection needle (1), the injection hole (3) is arranged on the side wall of the injection needle (1) and penetrates the injection cavity (2), the baffle (4) is arranged in the injection hole (3), the baffle (4) is made of flexible material, a plurality of baffles (4) are arranged in the injection hole (3), the plurality of baffles (4) are combined to form a circular structure, and the injection cavity (2) is sealed from the external environment; The limiting assembly (5) is connected outside the injection needle (1), the limiting assembly (5) comprises a limiting seat (51) and a chuck (52), a through hole is arranged at the center of the limiting seat (51) in a disc structure, the limiting seat (51) is slidably sleeved outside the injection needle (1) through the through hole, an installation cavity is arranged in the limiting seat (51), and the chuck (52) is slidably connected in the installation cavity and abuts against the outer wall of the injection needle (1) at one end.

2. An injection needle assembly for use in an ear cavity according to claim 1, characterized in that: The top end of the injection needle (1) is coaxially fixed with a butt joint pipe (6), and a screw thread is arranged on the outer wall of the butt joint pipe (6).

3. An injection needle assembly for use in an ear cavity according to claim 1, characterized in that: A plurality of injection holes (3) are equidistantly arranged on the injection needle (1), and the plurality of injection holes (3) are uniformly distributed on the outer wall of the injection needle (1).

4. An injection needle assembly for use in an ear cavity according to claim 1, characterized in that: The limiting assembly (5) further comprises a linkage plate (53) and a pressing plate (54), the pressing plate (54) is slidably connected in the installation cavity of the limiting seat (51) and protrudes from the outer wall of the limiting seat (51), the linkage plate (53) is rotatably connected in the installation cavity of the limiting seat (51), one end of the linkage plate (53) is rotatably connected with the pressing plate (54), and the other end is rotatably connected with the chuck (52).

5. An injection needle assembly for use in an ear cavity according to claim 1, characterized in that: The inner wall of the installation cavity of the limiting seat (51) abuts against a return spring (55), one end of the return spring (55) abuts against the chuck (52).

6. An injection needle assembly for use in an ear cavity according to claim 1, characterized in that: The center of the injection cavity (2) is fixed with a endoscope catheter (7), a through hole is arranged on the side wall of the injection needle (1), one end of the endoscope catheter (7) is bent and arranged in the through hole.

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