External auditory canal-tympanic membrane model for operation simulation training

Abstract

The utility model provides an external auditory canal-tympanic membrane model for operation simulation training, which comprises a bendable tube with one end provided with an inclined tip, and the inner cavity of the tube is used for simulating a human external auditory canal; and the thin film detachably wraps the end, provided with the inclined pointed end, of the tube, and the part, covering the opening of the inner cavity of the tube, of the thin film is used for simulating a human tympanic membrane. The ear endoscopic surgery teaching aid is low in cost, high in accessibility, easy to operate and suitable for serving as an entry teaching tool for an ear endoscopic surgery beginner.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of clinical medical teaching, and particularly relates to an external auditory canal-membrana tympani model for surgical simulation training. BACKGROUND

[0002] In recent years, endoscopic ear surgery has gradually become the preferred technique for many ear surgeries due to its advantages such as precision, minimally invasive, wide-angle view, flexible viewing angle, close observation, and ease of implementation with instruments and equipment. However, there are problems such as high difficulty in getting started, low fault tolerance, and less practice in the learning and promotion process of endoscopic ear surgery, making it very difficult to learn endoscopic ear surgery. The main problems are as follows:

[0003] 1. High trial and error cost: Endoscopic ear surgery requires delicate operation in a narrow ear canal, and any slight mistake can lead to serious complications and irreversible damage to the patient. Therefore, under the consideration of ethics and medical safety, novice doctors cannot directly practice the operation on patients.

[0004] 2. Traditional training models are difficult to popularize: cadaveric temporal bone models are the "gold standard" for endoscopic ear surgery training, but due to resource scarcity, high acquisition difficulty, and high cost, their application and promotion are limited. Especially in primary hospitals or units, there is a lack of cadaveric dissection conditions, and such training opportunities cannot be provided.

[0005] 3. High price of alternative models: Although there are animal cadaver models and synthetic models as alternatives, these models are usually expensive and many are disposable, resulting in high training costs and making it difficult to meet the training needs of a large number of beginners.

[0006] 4. Primary training needs are ignored: Traditional models are mainly for doctors with some experience and are used for detailed operation training of complex structures, requiring high precision and structural restoration of the model. However, for beginners of endoscopic ear surgery, the training focus is on hand-eye coordination and stability of basic operation, without involving complex middle ear structures, and even less requiring high-precision restoration models.

[0007] The utility model discloses a kind of endoscopic ear surgery bionic teaching instrument for teaching, including first installation component, second installation component and bionic ear canal component, first installation component is provided with first installation cavity;Bionic ear canal component includes ear canal part and sound transmission part, ear canal part is fixedly arranged in first installation cavity, sound transmission part is detachably arranged in first installation cavity and located at the side of ear canal part;Second installation component is rotatably connected at the end of first installation component, second installation component can be rotated and covered on first installation cavity to form complete bionic human ear structure, adopt rotating structure to realize the back and forth switching of section structure and real surgical environment.The bionic teaching instrument for teaching of endoscopic ear surgery is relatively complex in structure, and cost is higher. Utility model content

[0008] Based on the above technical problems existing in the prior art, the utility model provides an external auditory canal-membrana tympani model for surgical simulation training, which is low in cost, high in accessibility and easy to operate, and is suitable as a teaching tool for beginners of endotoscopic surgery.

[0009] The utility model provides an external auditory canal-membrana tympani model for surgical simulation training, which comprises:

[0010] One end has an inclined tip and a bendable tube, the inner cavity of the tube is used for simulating the human external auditory canal, a film is detachably wrapped around the end of the tube with an inclined tip, and the part of the film covering the opening of the inner cavity of the tube is used for simulating the human membrana tympani.

[0011] Preferably, the inclined angle of the inclined tip is 45-50 DEG, simulating the inclination of the normal human membrana tympani.

[0012] Preferably, the tube is a paper straw, which can be arbitrarily bent to simulate different ear canal curvatures and adjust the training difficulty.

[0013] Preferably, the inner diameter of the tube is 8-12 mm, the longest axial length of the outer lateral wall of the tube is 3-3.5 mm, and the shortest axial length of the outer lateral wall of the tube is 2.5-3 mm. Tubes with different inner diameters can be used to adjust the training difficulty.

[0014] Preferably, the film is a PE film, which has similar properties to the membrana tympani, i.e. thin and elastic, and can simulate the vibration effect of the membrana tympani under the action of sound waves.

[0015] Preferably, when the film is wrapped around the tube, the part located at the outer lateral wall of the tube is bound and fixed to the tube by a rubber ring, which facilitates the replacement of the film and repeated practice.

[0016] Preferably, the inner cavity lateral wall of the tube also has a rubber putty for simulating the cerumen of the external auditory canal.

[0017] Compared with the prior art, the utility model has the beneficial effects as follows:

[0018] 1. The material is easy to obtain and low in cost: the model is made of common materials such as PE film, rubber ring and paper tube, which is convenient for production and popularization, and is suitable for large-scale teaching and use in primary hospitals.

[0019] 2. Simulated basic structure: The model basically restores the structural features of the external auditory canal and tympanic membrane without involving complex middle ear anatomy. It supports basic endoscopic procedures or endoscopic surgical simulations such as otoscopy, external auditory canal cleaning, cerumen removal, tympanic membrane puncture, and tympanic membrane tube placement, which can meet the basic operation training needs of beginners.

[0020] 3. Modular design and easy replacement: The model is divided into an ear canal module and a tympanic membrane module, which can be quickly disassembled and replaced as needed, supports multiple reuses, and the training difficulty can be adjusted.

[0021] 4. Supports standard endoscopic equipment and instrument operation: The model is compatible with conventional ear endoscopes and surgical instruments, helping trainees adapt to the endoscopic field of vision, practice instrument use, and experience the feel of operation in a safe environment, quickly improving hand-eye coordination. Attached Figure Description

[0022] Fig. 1 This is a schematic diagram of the external auditory canal-tympanic membrane model of this utility model.

[0023] Fig. 2 This is a schematic diagram of the exploded structure of the external auditory canal-tympanic membrane model of this utility model.

[0024] Reference numerals: tube 1, tip 11, membrane 2, rubber ring 3. Detailed Implementation

[0025] like Figs. 1-2 As shown, this embodiment provides an external auditory canal-tympanic membrane model for surgical simulation training, including a tube 1 and a membrane 2.

[0026] One end of the tube 1 has an inclined tip 11 that is bendable, with an inclination angle of 45° to 50°. The inner cavity of the tube 1 is used to simulate the human external auditory canal.

[0027] Tube 1 is made of paper straw, which can be bent at will to simulate different ear canal curvatures and adjust the training difficulty.

[0028] The inner diameter of tube 1 is 8–12 mm; the longest axial section of the outer wall of tube 1 is 3–3.5 mm, and the shortest axial section of the outer wall of tube 1 is 2.5–3 mm. Tubes 1 with different inner diameters can be used to adjust the training difficulty.

[0029] The inner wall of tube 1 is also filled with modeling clay to simulate earwax in the external auditory canal.

[0030] The membrane 2 is detachably wrapped around one end of the tube 1 with an inclined tip 11. The portion of the tube 1 covered by the membrane 2 is used to simulate the human tympanic membrane.

[0031] The film 2 is a PE film 2, which has similar characteristics with the eardrum, i.e. thin and elastic, and can simulate the vibration effect of the eardrum under the action of sound waves.

[0032] When the film 2 is wrapped on the tube 1, the part of the film 2 located at the outer side wall of the tube 1 is tied and fixed to the tube 1 by the rubber ring 3.

[0033] In use, according to the teaching purpose and the training difficulty, a tube 1 with a suitable size is selected, the tube 1 is bent according to the training difficulty to simulate the corresponding ear canal curvature, then the film 2 is wrapped on the pointed end 11 of the tube 1, and the film 2 is tied on the tube 1 by the rubber ring 3, so that the teaching and operation training can be carried out.

[0034] If the film 2 needs to be replaced due to damage, or the tube 1 needs to be replaced due to adjustment of the training difficulty, the rubber ring 3 can be directly loosened, the film 2 or the tube 1 can be removed for replacement, and then the rubber ring 3 can be tied again, which is very fast and convenient.

Claims

1. An external ear canal-tympanic membrane model for surgical simulation training, characterized in that The utility model relates to a kind of ear canal simulator, comprising: A bendable tube with a slanted tip at one end, the inner cavity of the tube is used to simulate human external auditory canal; A film is detachably wrapped around the end of the tube with a slanted tip, the film covers the part of the opening of the inner cavity of the tube to simulate human eardrum.

2. The external auditory canal-tympanic membrane model for surgical simulation training of claim 1, wherein, The slanted angle of the slanted tip is 45°-50°.

3. The external auditory canal-tympanic membrane model for surgical simulation training of claim 1, wherein, The tube is a paper straw.

4. The external auditory canal-tympanic membrane model for surgical simulation training of claim 1, wherein, The inner diameter of the tube is 8-12mm; the longest axial length of the outer lateral wall of the tube is 3-3.5mm, and the shortest axial length of the outer lateral wall of the tube is 2.5-3mm.

5. The external auditory canal-tympanic membrane model for surgical simulation training of claim 1, wherein, The film is a PE film.

6. The ear canal - tympanic membrane model for surgical simulation training of claim 1, wherein, When the film is wrapped around the tube, the part of the film located at the outer lateral wall of the tube is tied and fixed to the tube by a rubber ring.

7. The ear canal - tympanic membrane model for surgical simulation training of claim 1, wherein, The inner cavity lateral wall of the tube also has a putty for simulating cerumen of external auditory canal.

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