CN117496807A - High-simulation colonoscope training model - Google Patents

Abstract

This application relates to a high-simulation colonoscopy training model, which relates to the field of medical training models. It includes a colon model and a polyp model detachably installed on the colon model; the colon model is provided with a polyp replacement point for installing the polyp model, and the colon model Polyp replacement points are set on different intestinal segments; polyp replacement points are set at multiple different positions along the circumference of the colon model. This application has the function of simulating various polyp lesion training scenarios and is helpful for efficient colonoscopy training.

Description

A high-simulation colonoscopy training model

Technical field

The present application relates to the field of medical training models, and in particular, to a high-simulation colonoscopy training model.

Background technique

Colonoscopy is the most widely used and effective polyp screening method today. Colonoscopy can sequentially and clearly observe the anal canal, rectum, sigmoid colon, descending colon, transverse colon, ascending colon, ileocecal area and Mucosal status of the terminal ileum. The instrument used (colonoscope) is a long electronic colonoscope. Through the electronic camera installed on the front end of the colonoscope, the image of the colon mucosa is transmitted to the electronic computer for processing, and finally displayed on the monitor screen. Using the screen, doctors can observe changes in the mucosa of the large intestine. For example, whether there are polyps or tumors. At the same time, biopsy forceps or snares can also be sent through the instrument channel of the colonoscope to clamp or snare the polyp tissue, and finally the polyp tissue can be pathologically sectioned for further examination.

Currently, there are three main methods for colonoscopy training: 1. Clinical patients, that is, colonoscopy is used for operational training on real patients; 2. Silicone simulated colon model, that is, a simulated colon model made of soft silicone; 3. Pig Intestinal model, and complete pig intestinal organs obtained after isolation of pig intestines, can be used for simulation training on pig intestines.

Among them, 1. Using clinical patient training can easily lead to surgical complications and medical disputes due to unskilled skills. At the same time, the target patients may not be found within a certain time as training cases, and the training cannot be planned in advance, which affects Learning efficiency; 2. Silicone simulated colon model. The main problem is that the current silicone model is not very realistic, especially for the simulation of polyp lesions. It cannot simulate different types of polyps in various parts, making it difficult to inspect, identify, treat and replace polyps. and measurement and other operations; 3. The advantage of the pig intestine model is that the structure of the intestine is very similar to that of humans. The disadvantage is that this pig intestine block has no targeted lesions, resulting in poor training effects. The three currently used colonoscopy training tools mainly have problems of low effectiveness and low simulation.

In view of the above-mentioned related technologies, the existing colon models on the market can only be used for training of advancing and retracting the scope, which is suitable for entry-level colonoscopy training. It is difficult to meet the requirements for the inspection, identification, treatment, replacement and measurement of colon polyps. Polyps cannot be inspected, identified, treated, replaced and measured in various parts of the colon.

The inventor mainly designed and produced an operating model for colonoscopy surgical training mainly in response to the surgical skills training needs for polyp examination, differential diagnosis and treatment under colonoscopy.

Contents of the invention

In order to provide a training device that can be designed and produced with high simulation degree and can be trained repeatedly according to the surgical training requirements of different types of colon polyp lesions in multiple locations, this application provides a high simulation colonoscopy training model with a replaceable polyp module. , can repeatedly simulate different polyp lesions in different positions of the colon model, and can simulate a variety of lesion training scenarios, which is helpful for efficient colonoscopy training.

A high-simulation colonoscopy training model provided by this application adopts the following technical solution:

A high-simulation colonoscopy training model, including a colon model and a polyp model detachably installed on the colon model; the colon model is provided with a polyp replacement point for installing the polyp model, and different intestines of the colon model The polyp replacement points are provided on each segment; the polyp replacement points are provided at multiple different positions along the circumference of the colon model.

By adopting the above technical solution, in actual operation, different polyp diseased tissues in the intestine can be simulated by replacing different polyp models and installing them on the colon model. At the same time, the polyp models can be installed at polyp replacement points in different intestinal segments and different circumferential positions. It can simulate different types of colon polyp lesions in multiple locations, and the polyp model can be replaced and operated repeatedly, which can meet the inspection, identification, treatment, replacement and measurement of polyps in various parts of the colon. The model has a high degree of simulation. It is more in line with the surgical skills training needs for polyp examination, differential diagnosis and treatment under colonoscopy. Before performing polyp examination under colonoscopy, lubricant can be added to the colon model through each polyp replacement point. Since the positions of the polyp replacement points are different, lubricant can be added to the colon model at different angles and positions. This has It helps to fully lubricate the interior of the colon model and facilitates the endoscopic operation during training.

Optionally, the colon model includes a cecum segment, an ascending colon segment, a transverse colon segment, a descending colon segment, a sigmoid colon segment and a rectum segment; the cecum segment, ascending colon segment, transverse colon segment, descending colon segment, sigmoid colon segment and rectum segment A polyp replacement point is set up on both sides.

By adopting the above technical solution, only one polyp replacement point is set up in each intestinal segment in order to simplify the complexity of the model and improve the simulation degree of the model when simulating multiple lesions.

Optionally, the circumferential positions of the polyp replacement points on the cecal segment, ascending colon segment, transverse colon segment, descending colon segment, sigmoid colon segment and rectal segment do not overlap.

By adopting the above technical solutions, we can further supplement the diversity of circumferential positions of polyp lesions, improve the simulation degree of the model, and enrich the lesion scenarios that the model can simulate.

Optionally, the polyp model is made of soft elastic material; the polyp replacement point includes a mounting hole provided on the outer surface of the colon model and an insertion hole provided on the inner surface of the colon model, and the installation hole is connected with the insertion hole; The polyp model includes a base part, a polyp part, and a connecting part connecting the base part and the polyp part. The base part is plug-fitted with the installation hole, and the connection part is adapted to the size of the insertion hole.

By adopting the above technical solution, the polyp model is plugged and installed at the polyp point, and a simple and convenient detachable connection and fixation is achieved through plugging and fitting; the polyp part is a polyp that simulates a disease, and the polyp part passes through the insertion hole and is on the inner wall of the colon model Diseased tissue is formed on the surface. Since the colon model itself is made of elastic material, the size adaptation of the connecting part and the insertion hole can largely eliminate the splicing traces between the connecting part and the inner wall of the colon, improving the degree of simulation.

Optionally, the polyp model includes an extra large polyp model, a large polyp model, a medium polyp model and a small polyp model. The polyp part 211 size of the extra large polyp model is greater than 20 mm, the polyp size of the large polyp model is greater than 10 mm and less than or equal to 20 mm. The polyp size of the polyp model is greater than 5 mm and less than or equal to 10 mm, and the polyp size of the small polyp model is less than or equal to 5 mm; the base and connection sizes of the large polyp model, medium polyp model and small polyp model are all different and gradually decrease; the size of the extra large polyp model is different The size of the base part and the connecting part of the model and the large polyp model are the same; the size of the polyp replacement point is set corresponding to the installed polyp model.

By adopting the above technical solution and summarizing and analyzing clinical experience, polyps of common sizes are classified. Polyps of different sizes are provided with bases of different sizes, which can make the size of the base and the connecting part more suitable for the size of the polyps. This can make The polyp model and colon model are more closely connected to improve simulation.

Optionally, the polyp replacement points on the rectal segment and the transverse colon segment have a specification of greater than 10 mm, the polyp replacement points on the ascending colon segment and the sigmoid colon segment have a specification of 5 mm-10 mm, and the cecal segment And the polyp replacement point on the descending colon segment is less than 5 mm.

By adopting the above technical solution, polyp replacement points of different specifications are evenly distributed on the left and right colon of the colon model, which can fully simulate different disease scenarios. By summarizing clinical experience, common specifications are set in different intestinal segments. Polyp replacement point, the actual operation training effect is better.

Optionally, the circumferential position of the polyp replacement point of each intestinal segment is projected on a colon model cross-section, and the central angle between two adjacent polyp replacement points and the center of the cross-section is 45 degrees to 90 degrees.

By adopting the above technical solution, a balanced distribution of polyp replacement points in the circumferential direction is ensured with a limited number of polyp replacement points. In actual operations, polyp lesions may appear at any position along the circumference of the colon; this application sets the central angle between polyp replacement points, which can simulate polyp lesions in significantly different locations with a limited number of polyp replacement points, optimizing training. Function.

Optionally, it also includes a decorative clamp ring inserted into the exposed end of the polyp model. The outer contours of the decorative clamp rings are all the same. The inner slots of the decorative clamp ring are set in multiple sizes according to the corresponding polyp model and polyp replacement point.

By adopting the above technical solution and installing a decorative clamp ring, the appearance of the polyp replacement point where the polyp model is installed is consistent, so as to prevent the difference in appearance from affecting the operator's objective judgment of the size and type of the polyp, and to optimize the training attributes of the training model.

Optionally, the polyp model is divided into regular polyp type and irregular polyp type according to whether the shape of the polyp part is regular; according to the Paris classification, the polyp morphological classification of the irregular polyp type is 0-Ip (pedunculated type). ), the polyp morphological classification of the regular polyp type includes 0-Ⅰsp (subpedunculated type), 0-Ⅰs (sessile type), 0-Ⅱa (superficial raised type) and 0-Ⅱb (superficial flat type) .

By adopting the above technical solutions, the types of polyps are improved and the disease scenarios that can be simulated by the colon model are enriched. The morphological classification of polyps adopts the five categories in the Paris classification: 0-Ⅰp (pedunculated type), 0-Ⅰsp (subpedunculated type), 0-Ⅰs (sessile type), 0-Ⅱa (superficial raised type) and 0-Ⅱb (superficial flat type), in order to enrich the types of polyp lesions without complicating the morphological classification of polyps, so that beginners of colonoscopy can master more comprehensive polyp lesions in a shorter time. According to clinical experience, no All regular polyp types are presented as 0-Ⅰp (pedunculated type), and regular polyp types are presented as 0-Ⅰsp (subpedunculated type), 0-Ⅰs (sessile type), 0-Ⅱa (superficial raised type) and 0 -IIb (superficial flat type) appears in four types.

Optional, irregular polyp types and four types of regular polyp types are provided with four polyp models of different sizes: extra large polyp model, large polyp model, medium polyp model and small polyp model; 0-Ⅱb (superficial flat type) ) type of regular polyp type is additionally provided with large polyp model, medium polyp model and small polyp model, and there are three types of polyp models of different sizes.

By adopting the above technical solution, multiple polyp models are set up for various types of polyp lesions, which can enrich the types of simulated polyp lesions; 0-Ⅱb (superficial flat type) polyps are difficult to identify as polyp lesions in appearance, so in addition to In addition to identifying polyp lesions, it can also be used as a sealing component. An additional set of large polyp models, medium polyp models, and small polyp models of 0-Ⅱb (superficial flat type) regular polyps can be set up to replace six polyps. All are blocked, as a common simulated scenario without polyposis.

To sum up, this application includes the following beneficial technical effects:

1. This application discloses a high-simulation colonoscopy training model. By installing a detachable polyp model on the colon model, the operator can flexibly configure the required types of polyp models as needed, and at the same time, the polyp model can be installed on the colon model. Different positions in the length direction and circumferential direction are used to simulate the diversity of polyp lesion locations and improve the overall simulation of the training model; the setting of polyp replacement points also helps to lubricate the interior of the colon model;

2. By setting the number of polyp replacement points to 6 and distributing them on each intestinal segment, the model can be simplified and the simulated lesion scenes can be enriched;

3. By classifying polyp models according to polyp sizes of 5mm, 10mm, and 20mm, on the one hand, correspondingly set polyp replacement points and base sizes with more suitable sizes will help improve the model simulation. On the other hand, according to domestic and foreign Top journal reports and clinical experience classify polyp sizes to facilitate flexible configuration of polyp models according to training needs.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the colon model in the embodiment of the present application;

Figure 2 is a schematic structural diagram of the polyp replacement point in the embodiment of the present application;

Figure 3 is a structural schematic diagram 2 of the polyp replacement point in the embodiment of the present application;

Figure 4 is a schematic diagram of the circumferential distribution of polyp replacement points in the embodiment of the present application;

Figure 5 is a schematic diagram of the overall structure of an embodiment of the present application.

Description of the drawings: 1. Colon model; 11. Polyp replacement point; 111. Installation hole; 112. Insert sleeve part; 113. Insert hole; 12. Cecum segment; 13. Ascending colon segment; 14. Transverse colon segment; 15. Descending colon segment; 16. Sigmoid colon segment; 17. Rectum segment; 18. Appendiceal segment; 19. Anal segment; 2. Polyp model; 21. Replacement part; 211. Polyp part; 212. Connection part; 213. Pedicle part; 22 , Base part; 221. Column; 222. Cover plate; 223. Flange; 224. T-shaped connector; 3. Simulated sphincter; 4. Decorative clamp ring; 5. Shell; 51. Transparent observation window; 52. Fixed Collar.

Detailed ways

The present application will be further described in detail below in conjunction with Figures 1-5.

The embodiment of the present application discloses a high-simulation colonoscopy training model. Referring to Figures 1 and 2, it includes a colon model 1 and a polyp model 2. The polyp model 2 is detachably installed on the colon model 1.

The colon model 1 is made of soft, foldable material, such as high-performance silicone; the colon model 1 includes an appendix segment 18, a cecum segment 12, an ascending colon segment 13, a transverse colon segment 14, a descending colon segment 15, a sigmoid colon segment 16, and Rectal segment 17 and anal segment 19. Polyp replacement points 11 are provided on the cecum segment 12, ascending colon segment 13, transverse colon segment 14, descending colon segment 15, sigmoid colon segment 16 and rectum segment 17.

The simulated sphincter 3 is installed on the anal segment 19. The simulated sphincter 3 is a circular inflatable air bag installed on the anal segment 19. The contraction force of the sphincter 3 is simulated through the air pressure elasticity of the air bag, thereby improving the simulation degree of the model.

Referring to Figures 2 and 3, the colon model 1 is provided with multiple polyp replacement points 11 for detachably mounting the polyp model 2. The polyp replacement points 11 include installation holes 111 provided on the outer surface of the colon model 1 and disposed inside the colon model 1. There is an insertion hole 113 on the surface, and the mounting hole 111 is connected with the insertion hole 113; the outer surface of the colon model 1 is provided with an insertion sleeve portion 112 extending outward corresponding to the outline of the mounting hole 111. The polyp model 2 includes a base 22, a polyp part 211, and a connecting part 212 connecting the base 22 and the polyp part 211. When the polyp morphological classification of the polyp model is 0-Ⅰp (pedunculated type) or 0-Ⅰsp (sub-pedunculated type) ), a cylindrical pedicle 213 is also provided between the connecting part 212 and the polyp part 211. The connection part 212, the pedicle part 213 and the polyp part 211 are formed in one piece, but the connection part 212 and the pedicle part 213 are made of the same high-performance silicone material (R2-0050) as the colon model 1, while the polyp part 211 is a diseased tissue and is made of contrasting colors. Deeper high-performance silicone material (R4-0030), two silicone materials are integrated through two-color injection molding.

The base portion 22 is plug-fitted with the installation hole 111, and the pedicle portion 213 matches the size of the insertion hole 113; the base portion 22 is made of plastic material, and the connecting portion 212 is detachably installed on the base portion.

The base portion 22 includes a cover plate 222 that is in contact with the end surface of the plug sleeve portion 112 , a flange 223 that is engaged with the inner wall of the plug sleeve portion 112 , and a column 221 that connects the cover plate 222 and the flange 223 . The cover plate 222 and the flange 223 It is integrated with the column body 221. The base part 22 is plugged and fixed into the plug sleeve part 112 at the polyp replacement point 11, and the entire polyp model 2 can be disassembled and assembled by plugging and unplugging.

A T-shaped connector 224 is provided at one end of the column 221 close to the replacement part 21 , and a T-shaped slot is provided on the connecting part 212 corresponding to the T-shaped connector 224 . The polyp part 211, the pedicle part 213 and the connecting part 212 form a replacement part 21 that can be detachably installed on the base part 22.

Referring to Figure 1, the polyp model 2 includes an extra large polyp model, a large polyp model, a medium polyp model and a small polyp model. The polyp part 211 size of the extra large polyp model is greater than 20 mm, the polyp size of the large polyp model is greater than 10 mm and less than or equal to 20 mm, and the medium polyp model The polyp size of the model is greater than 5 mm and less than or equal to 10 mm, and the polyp size of the small polyp model is less than or equal to 5 mm; the sizes of the base 22 and the connecting portion 212 of the large polyp model, the medium polyp model and the small polyp model are all different and gradually decrease; The sizes of the base portion 22 and the connecting portion 212 of the polyp model and the large polyp model are the same; the size of the polyp replacement point 11 is set corresponding to the installed polyp model 2 .

Referring to Figure 1, the polyp replacement points 11 on the rectal segment 17 and the transverse colon segment 14 are larger than 10 mm, the polyp replacement points 11 on the ascending colon segment 13 and the sigmoid colon segment 16 are 5 mm-10 mm in size, the cecal segment 12 and the descending colon are The polyp replacement point on segment 15 is smaller than 5 mm.

Referring to Figure 4, the circumferential position of the polyp replacement point 11 on each intestinal segment is projected on the circular cross-section of a colon model. The central angle between two adjacent polyp replacement points 11 and the center of the cross-section circle is 45 degrees to 90 degrees. In this embodiment, the circumferential distribution of the polyp replacement points 11 of each intestinal segment in the 1-circumferential direction of the colon model with the clock as a reference is: the polyp replacement points 11 of the cecal segment 12 are located in the middle of 1 to 2 o'clock, The polyp replacement point 11 of 13 is located at 3 o'clock, the polyp replacement point 11 of transverse colon segment 14 is located at 6 o'clock, the polyp replacement point 11 of rectal segment 17 is located between 7 and 8 o'clock, and the polyp replacement point 11 of sigmoid colon segment 16 is located at 6 o'clock. 11 is located at the 9 o'clock position, and the polyp replacement point 11 of the descending colon segment 15 is located at the 12 o'clock position. The polyp replacement points on the cecum segment 12, ascending colon segment 13, transverse colon segment 14, descending colon segment 15, sigmoid colon segment 16 and rectum segment 17 are centrally symmetrically distributed.

Referring to Figures 2 and 3, it also includes decorative clamp rings 4. There are multiple decorative clamp rings 4 corresponding to the polyp replacement points 11. The outer contours of the decorative clamp rings 4 are all the same. The decorative clamp rings 4 are inserted into sleeves and installed at the corresponding polyp replacement points. On the insertion sleeve part 112 of the polyp 11, the appearance of multiple polyp replacement points 11 is consistent. The inner slot of the decorative collar 4 is provided in various sizes according to the insertion sleeve portion 112 of the corresponding polyp replacement point 11 .

The polyp model 2 is divided into regular polyp type and irregular polyp type according to whether the shape of the polyp part 211 is regular or not; polyp morphological classification adopts the five categories in the Paris classification: 0-Ⅰp (pedunculated type), 0-Ⅰsp (sub-pedunculated type) type), 0-Ⅰs (sessile type), 0-Ⅱa (superficial raised type) and 0-Ⅱb (superficial flat type); the polyp morphological classification of irregular polyp types is 0-Ⅰp (pedunculated type) ); The polyp morphological classification of regular polyps includes 0-Ⅰsp (subpedunculated type), 0-Ⅰs (sessile type), 0-Ⅱa (superficial raised type) and 0-Ⅱb (superficial flat type). Irregular polyp types and the four types of regular polyp types correspond to four polyp models of different sizes: extra large polyp model, large polyp model, medium polyp model and small polyp model; rules for categories 0-Ⅱb (superficial flat type) Polyp type additionally includes large polyp model, medium polyp model and small polyp model, and three types of polyp models of different sizes; 0-Ⅱb (superficial flat type) regular polyps have different polyp sizes and are smaller in appearance. Difficult to identify as polyp lesions, which can enrich the size of polyps and serve as a common simulation scenario for polyp-free lesions. See the table below for details.

Referring to Figure 5, it also includes a shell 5 and a fixed collar 52. The shell 5 is a cavity structure that imitates the human body. The colon model 1 is installed in the shell 5. The anus of the colon model 1 is fixed with a connecting plate, and the anus penetrates the side of the shell 5. The wall is fixed in position through a connecting plate, which is detachably mounted on the housing 5 through an adhesive tape. The fixed clamp ring 52 is detachably fixed in the housing 5 with a spring ring and an adhesive tape. The fixed clamp ring 52 is a clamp piece spanning the colon model 1; multiple fixed clamp rings 52 are provided along the length direction of the colon model 1 to facilitate The overall outline of the colon model 1 is shaped; a transparent observation window 51 is provided on the outer shell 5. The transparent observation window 51 is made of plastic. The transparent observation window 51 and the outer shell 5 are detachably fixed through a buckle structure. When the colon model 1 needs to be replaced or maintained, The transparent observation window 51 is removed to dismantle the colon model 1 .

The implementation principle of a high-simulation colonoscopy training model disclosed in the embodiment of the present application is as follows: by setting a polyp replacement point 11 on the colon model 1, and detachably installing the polyp model 2 on the polyp replacement point 11, so that the colon model 1 Different types of colon polyp lesions are simulated in the model; polyp replacement points 11 are set on different intestinal segments of the colon model 1 to simulate different types of colon polyp lesions at multiple locations to further improve the simulation; the polyp model 2 can be plugged and unplugged The replacement method satisfies the need for repeated use of the training model.

The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application shall be covered by the scope of protection of the present application. Inside.

Claims (10)

1. A high simulation colonoscope training model, characterized in that: comprising a colon model (1) and a polyp model (2) removably mounted on the colon model (1); a polyp replacement point (11) for installing the polyp model (2) is arranged on the colon model (1), and the polyp replacement points (11) are arranged on different intestinal sections of the colon model (1); the polyp replacement points (11) are set at a plurality of different positions in the circumferential direction of the colon model (1).

2. A highly simulated colonoscope training model according to claim 1, characterized in that: the colon model (1) comprises a cecum section (12), a ascending colon section (13), a transverse colon section (14), a descending colon section (15), a sigmoid colon section (16) and a rectum section (17); the cecum section (12), the ascending colon section (13), the transverse colon section (14), the descending colon section (15), the sigmoid colon section (16) and the rectal section (17) are all provided with a polyp replacement point (11).

3. A highly simulated colonoscope training model according to claim 2, characterized in that: the circumferential positions of the polyp replacement points (11) on the cecum section (12), the ascending colon section (13), the transverse colon section (14), the descending colon section (15), the sigmoid colon section (16) and the rectal section (17) are not overlapped.

4. A highly simulated colonoscope training model according to claim 3, characterized in that: the polyp model (2) is made of soft elastic materials; the polyp replacement point (11) comprises a mounting hole (111) arranged on the outer surface of the colon model (1) and an inserting hole (113) arranged on the inner surface of the colon model (1), and the mounting hole (111) is communicated with the inserting hole (113); the polyp model (2) comprises a base part (22), a polyp part (211) and a connecting part (212) for connecting the base part (22) and the polyp part (211), wherein the base part (22) is in plug-in fit with the mounting hole (111), and the connecting part (212) is in size fit with the plug-in hole (113).

5. The high simulation colonoscope training model of claim 4, wherein: the polyp model (2) comprises an oversized polyp model, a large polyp model, a middle polyp model and a small polyp model, wherein the size of a polyp part 211 of the oversized polyp model is larger than 20mm, the size of a polyp of the large polyp model is larger than 10mm and smaller than or equal to 20mm, the size of a polyp of the middle polyp model is larger than 5mm and smaller than or equal to 10mm, and the size of a polyp of the small polyp model is smaller than or equal to 5mm; the base portion (22) and the connecting portion (212) of the large polyp model, the medium polyp model, and the small polyp model are all different in size and gradually decrease; the base portion (22) and the connecting portion (212) of the oversized polyp model and the large polyp model are the same size; the polyp replacement point (11) is sized corresponding to the installed polyp model (2).

6. A highly simulated colonoscope training model according to claim 5, characterized in that: polyp replacement points (11) on the rectal section (17) and the transverse colon section (14) are of a specification greater than 10mm, polyp replacement points (11) on the ascending colon section (13) and the sigmoid colon section (16) are of a specification of 5mm-10mm, and polyp replacement points (11) on the cecum section (12) and the descending colon section (15) are of a specification less than 5 mm.

7. The high simulation colonoscope training model according to claim 6, wherein: the circumferential positions of polyp replacement points (11) of each intestinal segment are projected on the cross section of a colon model (1), and the central angle formed by two adjacent polyp replacement points (11) and the center of the cross section is 45-90 degrees.

8. A highly simulated colonoscope training model according to any of claims 1-7, characterized in that: the novel polyp model also comprises a decoration collar (4) inserted at the exposed end of the polyp model (2), wherein the outer contours of the decoration collar (4) are the same, and the slots on the inner side of the decoration collar (4) are provided with various sizes according to the corresponding polyp model (2) and the polyp replacement point (11).

9. A highly simulated colonoscope training model according to claim 5, characterized in that: the polyp model (2) is classified into regular polyp types and irregular polyp types according to whether the shape of the polyp portion (211) is regular; according to Paris typing, the irregular polyp type polyp morphology typing is 0-ip (sessile type), and the regular polyp type polyp morphology typing includes 0-I sp (sub-sessile type), 0-is (sessile type), 0-IIa (superficial bulge type) and 0-IIb (superficial flat type).

10. A highly simulated colonoscope training model according to claim 9, characterized in that: the irregular polyp type and the four types of regular polyp type are respectively provided with 4 polyp models (2) with different sizes, namely an oversized polyp model, a big polyp model, a middle polyp model and a small polyp model; regular polyp types of 0-IIb (superficial flat) are additionally provided with large, medium and small polyp models and 3 different size specification seed polyp models (2).