Middle ear, inner ear round window niche membrane structure model

Abstract

The utility model provides a kind of middle ear, inner ear round window niche membrane structure model, including middle ear path model and round window niche soft film, wherein: the middle ear path model includes curved channel, support and base, support connects the both ends of curved channel and base;The round window niche soft film is rectangle, and is pasted in the outside of the support of middle ear path model.The utility model structure is ingenious, and reasonable in design and lower in cost.The utility model is realized in middle ear by curved model and silica gel soft film that sampling injection of ear canal robot is realistic test, and it is easy and convenient to operate.

Description

Technical Field

[0001] This utility model belongs to the field of medical testing technology, specifically, it relates to a middle ear and inner ear circular window niche membrane structure model, and more particularly to a middle ear-inner ear circular window niche membrane structure model. Background Technology

[0002] Liquid biopsy, as an emerging technique, provides a crucial window into the pathophysiological mechanisms of diseases by analyzing inflammatory factors, metabolites, and gene expression profiles in inner ear lymph. Direct inner ear drug administration is considered one of the most effective treatments, but its complex inner ear anatomy, limited operating space, and extremely high precision requirements make it difficult to routinely perform in clinical practice. The procedure for inner ear lymph fluid injection sampling involves entering through the external auditory canal, passing through the middle ear, and finally reaching the round window niche on the cochlea of ​​the inner ear. Lymph or medication is collected through the membrane of the round window niche.

[0003] Existing technologies have significant shortcomings: firstly, existing models do not involve the middle and inner ear structures, making it impossible to simulate the actual path and operating environment of an ear canal robot entering the middle ear and reaching the circular window niche; secondly, these models are costly, hindering the conduct of routine experiments. Therefore, a low-cost model that reflects the middle and inner ear structures is needed as a test subject to facilitate inner ear lymphatic fluid sampling and injection experiments.

[0004] For example, patent document CN221304145U discloses an ear canal simulator, including an ear canal model. The ear canal model is made of elastic material. An external ear canal is provided on the inner side of the ear canal model. An installation groove is provided on the inner wall of the external ear canal. A simulated ear hair component is movably engaged on the inner side of the installation groove. The simulated ear hair component includes an installation pad, a connecting strap, a pressing plate, and an ear hair sticker. An adhesive groove is provided on the inner side of the installation pad, and the ear hair sticker is pasted on the inner side of the adhesive groove.

[0005] However, patent document CN221304145U only includes the external auditory canal structure and does not involve the middle and inner ear structures. Moreover, it is costly and cannot meet the needs of the inner ear lymph fluid sampling and injection test of the ear canal robot.

[0006] Patent document CN210777461U discloses a middle and inner ear surgical training model. The model includes an artificial temporal bone and a base for supporting it. The artificial temporal bone is covered with a simulated skin layer. At least a portion of the mastoid process in the artificial temporal bone is hollow, accommodating a first replacement module. The first replacement module extends from the mastoid process to the inner ear and includes a cochlear portion located within the inner ear. The first replacement module also has a cavity for accommodating a second replacement module extending from the external auditory canal to the middle ear tympanic cavity. The second replacement module includes a tympanic membrane portion and an ossicular chain portion. The tympanic membrane portion divides the external auditory canal and the middle ear tympanic cavity, while the ossicular chain portion is located in the middle ear tympanic cavity and connected to the tympanic membrane portion. This invention simulates real surgical training while saving materials and being environmentally friendly.

[0007] However, patent document CN210777461U only designs functional modules without detailing structural features. For example, its surgical target is not the round window niche lamina, nor does it specify the material or shape of the middle ear pathway model and the round window niche lamina. Furthermore, this patent is not designed for an inner ear lymph fluid injection sampling experiment, and it addresses a different technical problem. Utility Model Content

[0008] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a model of the circular window niche membrane structure of the middle ear and inner ear.

[0009] According to the present invention, a middle ear and inner ear circular window niche membrane structure model is provided, comprising: a middle ear path model 1 and a circular window niche soft membrane 2; The middle ear pathway model 1 includes a curved channel 3, which has a first end and a second end; The circular window niche membrane 2 completely covers the outer side of the first end of the curved channel 3; The second end of the curved channel 3 is used for the ear canal robot to enter.

[0010] Preferably, the middle ear pathway model 1 further includes: a support 4 and a base 5; the support 4 connects the first end and the second end of the curved channel 3 to the base 5.

[0011] Preferably, the distance between the first end of the curved channel 3 and the base 5 is smaller than the distance between the second end of the curved channel 3 and the base 5.

[0012] Preferably, the curved channel 3 includes a first arc-shaped channel and a second arc-shaped channel, used to simulate the path of the ear canal robot entering the middle ear; The first and second arc-shaped channels are tangent.

[0013] Preferably, the first arc-shaped channel is closer to the first end of the curved channel 3, the second arc-shaped channel is closer to the second end of the curved channel 3, and the radius of the first arc-shaped channel is smaller than that of the second arc-shaped channel.

[0014] Preferably, the round window niche soft film 2 is rectangular and made of silicone.

[0015] Preferably, the thickness of the soft membrane 2 of the round window niche is 0.056 mm to 0.07 mm.

[0016] Preferably, the middle ear path model 1 is made of transparent resin material with a hardness greater than the preset hardness.

[0017] Preferably, the base 5 includes four symmetrically distributed recessed holes for fixing the middle ear path model 1.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The middle ear pathway model of this utility model has a curved channel to simulate the path of an ear canal robot entering the human middle ear, and is equipped with a silicone soft membrane, so that the membrane puncture operation to reach the circular window niche can be performed on the model, providing a basis for inner ear lymph fluid sampling and injection experiments. 2. The middle ear path model is made of transparent hard resin, and the soft membrane of the round window niche is made of silicone material, which simplifies the structural design, reduces the production cost, and solves the problem of high model cost in the existing technology; 3. The thickness of the circular window niche membrane is controlled at 0.056mm-0.07mm, which is close to the thickness of the circular window niche membrane in the human ear, enabling realistic testing of sampling and injection by the ear canal robot in the middle ear. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the middle ear and inner ear circular window niche membrane structure model of this utility model; Figure 2 This is a top view with dimension annotations of the middle ear and inner ear circular window niche membrane structure model of this utility model. Figure 3 This is a frontal view with dimension annotations of the middle ear and inner ear circular window niche membrane structure model of this utility model. The diagram shows: Middle ear pathway model 1; round window niche membrane 2; curved channel 3; support 4; base 5. Detailed Implementation

[0020] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a middle ear and inner ear circular window niche membrane structure model, including a middle ear path model 1 and a circular window niche soft membrane 2. The middle ear path model 1 is made of transparent resin with a hardness greater than a preset hardness, and is a transparent rigid resin; this model can be 3D printed to simulate the bone structure in the ear canal; the circular window niche soft membrane 2 is made of rectangular silicone material, prepared by spin coating, with a thickness of 0.056mm to 0.07mm, close to the thickness of the human inner ear circular window niche membrane, to make the simulation effect close to real conditions.

[0022] The middle ear pathway model 1 includes a curved channel 3, a support 4, and a base 5. The support 4 connects the first end and the second end of the curved channel 3 to the base 5. The support 4 can be 17mm wide and 2mm thick; the base 5 can be 40mm wide and 60mm long. The base 5 can have four symmetrical recessed holes for fixing the middle ear pathway model 1 to an external platform.

[0023] The curved channel 3 has a first end and a second end, and is composed of a first arc-shaped channel and a second arc-shaped channel. It is used to simulate the path of an ear canal robot entering the middle ear, and the first and second arc-shaped channels are tangent to each other. The first arc-shaped channel is closer to the first end of the curved channel 3, and the second arc-shaped channel is closer to the second end of the curved channel 3. The radius of the first arc-shaped channel is smaller than that of the second arc-shaped channel. Figure 3 As shown, the centerline of the curved channel 3 is composed of a first arc-shaped channel on the left and a second arc-shaped channel on the right, and the two are tangent to each other. The radius of the first arc-shaped channel is R10mm, and the radius of the second arc-shaped channel is R20mm.

[0024] The distance between the first end of the curved channel 3 and the base 5 is less than the distance between the second end of the curved channel 3 and the base 5. Specifically, the center height of the channel at the second end of the curved channel 3 can be 26mm, and the center height of the channel at the first end of the curved channel 3 is 22mm. Therefore, the first end of the curved channel 3 is the lower side, and the second end is the higher side.

[0025] A circular niche membrane 2 is attached to the outer side of the first end of the curved channel 3, completely covering the first end of the curved channel 3. The circular niche membrane 2 can be attached to the outer side of the bracket 4 connected to the first end for easy fixation.

[0026] The second end of the curved channel 3 is used for the ear canal robot to enter, which facilitates the ear canal robot to carry out sampling and injection tests. During the test, the robot can enter along the center line of the curved channel 3 and reach the soft membrane 2 of the circular window niche, and probe out the microneedle to simulate the puncture operation.

[0027] This invention features a clever structure, reasonable design, and low cost. It achieves a realistic test of sampling and injection of an ear canal robot in the middle ear by using a bending model and a silicone membrane. The operation is simple and convenient.

[0028] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A model of a circular window niche membrane structure for the middle and inner ear, characterized in that, include: Middle ear pathway model (1) and round window niche lamina (2); The middle ear pathway model (1) includes a curved channel (3), which has a first end and a second end; The circular window niche membrane (2) completely covers the outer side of the first end of the curved channel (3); The second end of the curved channel (3) is used for the ear canal robot to enter.

2. The middle ear and inner ear circular window niche membrane structure model according to claim 1, characterized in that, The middle ear pathway model (1) also includes: a support (4) and a base (5); the support (4) connects the first end and the second end of the curved channel (3) to the base (5).

3. The middle ear and inner ear circular window niche membrane structure model according to claim 2, characterized in that, The distance between the first end of the curved channel (3) and the base (5) is less than the distance between the second end of the curved channel (3) and the base (5).

4. The middle ear and inner ear circular window niche membrane structure model according to claim 1, characterized in that, The curved channel (3) includes a first arc-shaped channel and a second arc-shaped channel, which are used to simulate the path of the ear canal robot entering the middle ear; The first and second arc-shaped channels are tangent.

5. The middle ear and inner ear circular window niche membrane structure model according to claim 4, characterized in that, The first arc-shaped channel is closer to the first end of the curved channel (3), and the second arc-shaped channel is closer to the second end of the curved channel (3). The radius of the first arc-shaped channel is smaller than that of the second arc-shaped channel.

6. The middle ear and inner ear circular window niche membrane structure model according to claim 1, characterized in that, The round window niche soft film (2) is rectangular and made of silicone.

7. The middle ear and inner ear circular window niche membrane structure model according to claim 1, characterized in that, The thickness of the soft membrane (2) for the round window niche is 0.056 mm to 0.07 mm.

8. The middle ear and inner ear circular window niche membrane structure model according to claim 1, characterized in that, The middle ear path model (1) is made of transparent resin material, and its hardness is greater than the preset hardness.

9. The middle ear and inner ear circular window niche membrane structure model according to claim 2, characterized in that, The base (5) includes four symmetrically distributed recessed holes for fixing the middle ear path model (1).

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