A colonoscopy simulation training box

Abstract

The application discloses a colonoscope simulation training box and belongs to the field of medical teaching aids, which comprises a box body, a positioning structure and a traction structure. The box body comprises a wall plate and a bottom plate. The positioning structure comprises a detachable connecting holder and a fixed tube clamp. The holder is fixedly connected with the bottom plate. The positioning structure is provided with a plurality of holders. The simulation tube is of a flexible structure. The space pose of the corresponding part of the simulation tube is changed by adjusting the position and angle of the holder, and the shape of the simulation tube is changed. The traction structure is connected with the bottom plate and comprises a connecting seat and a traction line which are connected with each other. The traction line is further connected with a movable tube clamp. The movable tube clamp is detachably connected with the simulation tube. When the traction line drives the movable tube clamp to move towards the connecting seat, the included angle of the parts of the simulation tube on both sides of the movable tube clamp is reduced. Through the above arrangement, the ex vivo colon can simulate the shape in the human body, including a part of relatively fixed intestinal segments and a part of relatively free intestinal segments, and different angle of the bending angle can be simulated according to the training difficulty.

Description

Technical Field

[0001] This invention belongs to the field of medical teaching aids technology, specifically relating to a colonoscopy simulation training box. Background Technology

[0002] Colonoscopy is a diagnostic and treatment method that involves inserting a thin, flexible colonoscope through the anus into the intestines. It uses visualization technology to examine the rectum, colon, and part of the small intestine. Colonoscopy can clearly detect intestinal lesions, and some intestinal lesions can be treated at the same time.

[0003] Part of the colon is relatively fixed, while another part is relatively free. Combined with the extensibility of the intestinal wall, this free portion forms a complex network of bends and twists within the abdominal cavity. During a colonoscopy, to fully visualize the intestinal tract, the colonoscope needs to be inserted into the cecum and even the small intestine. This process heavily relies on the endoscopist's skill. Furthermore, colonoscopy is used in endoscopic polypectomy and endoscopic mucosal resection. These procedures require the use of an electrocautery device. Without mastery of colonoscope insertion and electrocautery techniques, the examination may not be completed, increasing patient discomfort and even increasing the risk of perforation. Reconstructing the colon's distribution within the patient's body is crucial for improving the effectiveness of simulation training.

[0004] In actual operation, the angle between the free intestinal segment and the fixed intestinal segment will change. When the colonoscope enters the intestine and moves along the intestine to the angle of the intestinal segment, there may be a difficult angle to pass through. The colon simulation teaching aids currently used are difficult to simulate intestinal segments with variable angles.

[0005] Therefore, a training device is designed to simulate the physiological structure and electrical conductivity of the colon in the abdominal cavity, and the colon morphology in this device can be adjusted. Specifically, this training device is a colonoscopy simulation training box. Summary of the Invention

[0006] To overcome the shortcomings of current simulated intestinal devices in the background art, which cannot effectively reproduce the morphology of the colon in a patient's body, including adjusting the shape of the simulated intestinal segment and fixing the shape after adjustment, this invention proposes the following solution: Within a container holding the simulated intestinal segment, several positioning structures capable of clamping the segment are provided. The rotation of these positioning structures adjusts the bending direction and undulation of the simulated intestinal segment. Furthermore, a traction structure capable of directionally pulling any segment of the simulated intestinal segment is provided, thereby increasing the difficulty of the simulated training by creating bends within the segment. The specific solution of this invention is as follows:

[0007] A colonoscopy simulation training box includes: a box body, comprising a wall panel and a base plate; a positioning structure, comprising a detachably connected gimbal and a fixed tube clamp, wherein the gimbal is fixedly connected to the base plate, and the positioning structure is provided in several forms; a simulation tube, wherein when the simulation tube is connected to the fixed tube clamp, the fixed tube clamp restricts the axial and radial movement of the corresponding part of the simulation tube, and when the fixed tube clamp and the gimbal rotate relative to each other, the corresponding part of the simulation tube moves and changes the shape of the simulation tube; and a traction structure connected to the base plate, comprising a connecting seat and a traction line connected to each other, wherein the traction line is also fixedly connected to a movable tube clamp, wherein when the movable tube clamp is detachably connected to the simulation tube, the movable tube clamp connected to the traction line forms an angle at the corresponding section of the simulation tube, and when the traction line drives the movable tube clamp to move toward the connecting seat, the movable tube clamp moves the simulation tube and reduces the angle of the angle.

[0008] Furthermore, the wall panel is provided with an operation interface, the simulation tube is detachably connected to a closed end and a connected end, the connected end is detachably connected to the operation interface, and the closed end is located inside the box.

[0009] Furthermore, the simulated tube is flexible, and both the fixed tube clamp and the movable tube clamp have through positioning channels. When the simulated tube is detachably connected to the positioning channels, the positioning structure divides the simulated tube into multiple simulated intestinal segments. From the connecting end to the closed end, the simulated intestinal segments are, in order: rectal simulated segment, sigmoid colon simulated segment, descending colon simulated segment, transverse colon simulated segment, and ascending colon simulated segment. There are bends between two adjacent simulated intestinal segments.

[0010] Furthermore, the axial length of the transverse colon simulation segment is greater than the straight-line distance between its two ends of the positioning structure, and the axial length of the sigmoid colon simulation tube is greater than the straight-line distance between its two ends of the positioning structure. The transverse colon simulation segment and the sigmoid colon simulation segment are respectively connected to movable tube clamps.

[0011] Furthermore, the traction structure includes a traction box detachably connected to the connecting seat, the traction box having an elastic element inside, and the end of the traction line away from the movable tube clamp passing through the traction box and fixedly connected to the elastic element; the elastic element maintains the movable tube clamp holding the simulated tube in the traction position through the traction line.

[0012] Furthermore, the connecting seat is a lifting platform, and the traction box is detachably connected to the end of the lifting platform away from the base plate. When the lifting platform extends along its own axis, the simulated tube moves away from the base plate under the traction of the traction line and the movable tube clamp. During this process, the angle of the bend is reduced.

[0013] Furthermore, the simulated tube includes a conductive outer tube and an animal colon, the animal colon being disposed inside the conductive outer tube, and the conductive outer tube being connected to the communicating end via a conductive screw.

[0014] Furthermore, a conductive plate is detachably connected to the side wall of the wall panel facing the interior of the box, and a conductive interface is provided through the wall panel. When the connecting end is connected to the operation interface, the conductive screw is pressed between the connecting end and the conductive plate; when the conductive interface is energized, the conductive outer tube is in an energized state.

[0015] Furthermore, the gimbal is detachably connected to a positioning bolt, which moves inward into the gimbal and presses against the fixing tube clamp when tightened.

[0016] Furthermore, the box body is detachably connected to a lid, and when the lid is connected to the box body, the inside of the box body is not connected to the outside.

[0017] Furthermore, the fixing pipe clamp includes a surrounding end face, and the surrounding end face is detachably connected to an anti-slip pad.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention includes a pan-tilt unit connected to a base plate and fixed clamps connected to the pan-tilt unit. The pan-tilt unit has a ball joint and a positioning bolt. The ball joint allows the fixed clamps to rotate around the ball. When the fixed clamps rotate, they change the angle between the clamped simulated tube and the base plate and wall plate. By rotating each fixed clamp, the degree of undulation of the entire simulated tube can be adjusted, thereby simulating the shape of the colon under the compression and pushing of organs in the patient's body. The positioning bolts can restrict the rotation of the ball joint to fix the shape of the simulated intestinal segment after adjustment, preventing the fixed nodes of the simulated intestinal segment from being moved by the colonoscope inserted into it during training. This better restores the shape of the colon in the patient's body and helps the operator complete endoscopic insertion training.

[0020] 2. This invention is equipped with a lifting platform, a traction box, a traction line, and a movable tube clamp. One end of the traction line is connected to the movable tube clamp, and the other end of the traction line passes through the traction box and is connected to an elastic element. The elastic element has a tendency to pull the movable tube clamp toward the traction box. Therefore, the movable tube clamp, which holds the simulated intestinal segment, creates an angle on a certain intestinal segment, increasing the difficulty of the colonoscope moving in the intestine. The operator can continuously adjust the posture, advancement angle, and force of the endoscope, rotate and pull the endoscope body, and straighten the angle, thereby passing through the obstacle to reach the closed end.

[0021] 3. This invention is equipped with a conductive simulation tube and an isolated animal colon that highly replicates the human colon. After the endoscope and electrosurgical cutter are inserted into the simulation tube, it provides physiological structure and conductive conditions close to those of the human colon, further simulating the realism of training. By improving the operator's proficiency, it reduces the patient's pain during actual operation and reduces the risk of perforation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0023] Figure 1 This is a schematic diagram of an overall assembly structure of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of one of the structures without the lid assembled;

[0025] Figure 3 for Figure 1 Another structural diagram without the lid assembled;

[0026] Figure 4 for Figure 2 A schematic diagram of the structure without the simulation tube assembled;

[0027] Figure 5 for Figure 2 A frontal view of a cross-sectional structure of a simulated tube without air;

[0028] Figure 6 for Figure 2 A front view of a cross-sectional structure after the simulated tube has been inflated;

[0029] Figure 7 This is a top view of a box structure;

[0030] Figure 8 A schematic diagram of a pipe clamp structure;

[0031] Figure 9 A top view of a cross-sectional structure of a junction box;

[0032] Figure 10 A schematic diagram of a structure with a closed end;

[0033] Figure 11 A schematic diagram of a structure at the end of a connection;

[0034] Figure 12 A schematic diagram of the structure of the operation interface;

[0035] Figure 13 This is a schematic diagram of a conductive outer tube.

[0036] In the diagram, 1. Box body; 10. Box cover; 11. Wall panel; 111. Hinge; 112. Lock; 113. Operating interface; 114. Conductive plate; 12. Base plate; 121. Positioning hole one; 122. Positioning hole two; 2. Positioning structure; 21. Pan-tilt head; 211. Ball joint; 212. Positioning bolt; 22. Fixing pipe clamp; 221. Positioning channel; 222. Surrounding end face; 223. Limiting protrusion; 224. Anti-slip pad; 3. Simulation tube; 31. Connecting end; 311. Conductive screw; 32. Sealing end; 33. Simulated intestinal segment; 331. Rectal simulated segment; 332. Sigmoid colon simulated segment; 333. Descending colon simulated segment; 334. Transverse colon simulated segment; 335. Ascending colon simulated segment; 34. Conductive outer tube; 35. Animal colon; 4. Traction structure; 41. Connecting seat; 411. Lifting platform; 42. Traction line; 43. Movable tube clamp; 44. Traction box; 441. Elastic element. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention are clearly and completely described below through specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] A colonoscopy simulation training box, such as Figure 1-12 As shown, the system includes: a housing 1, comprising a wall panel 11 and a base plate 12; and a positioning structure 2, comprising a detachably connected gimbal 21 and a fixing clamp 22. The fixing clamp 22 is elastic and has a through-hole positioning channel 221. When the fixing clamp 22 clamps the simulated tube 3, it undergoes elastic deformation, and the inner diameter of the positioning channel 221 changes simultaneously. The gimbal 21 is fixedly connected to the positioning hole 121 on the base plate 12 by bolts. Several positioning structures 2 are provided. Specifically, the gimbal 21 has a ball joint structure or universal wheels. The fixing clamp 22 can rotate in multiple directions around the ball joint 211. Although the fixing clamp 22 can rotate around the ball joint 211, it always moves within a certain range centered on the connection position between the positioning structure 2 and the base plate 12. Each positioning structure 2 is connected to a simulated intestinal segment 33 of the simulated tube 3 and can restrict the movement of the simulated intestinal segment 33 within the rotation range of the ball joint 211. Therefore, multiple positioning structures 2 can roughly fix the shape of the entire simulated intestinal segment 33 in the box 1, while not affecting the movement of the part of the simulated tube 3 between adjacent fixed tube clamps 22.

[0039] When the simulated tube 3 is connected to the fixed tube clamp 22, the fixed tube clamp 22 restricts the axial and radial movement of the corresponding part of the simulated tube 3. However, the part of the simulated tube 3 between the adjacent fixed tube clamps 22 can still deform and move under force. When the fixed tube clamp 22 and the gimbal 21 rotate relative to each other, it drives the corresponding part of the simulated tube 3 to move and changes the shape of the simulated tube 3.

[0040] The traction structure 4 is connected to the positioning hole 122 on the base plate 12 by bolts. It includes a connecting seat 41 and a traction line 42 that are connected to each other. The traction line 42 is also fixedly connected to a movable tube clamp 43. Specifically, the movable tube clamp 43 is elastic and engages with the simulated tube 3. The initial inner diameter of the fixed tube clamp 22 and the movable tube clamp 43 is not greater than the outer diameter of the simulated tube 3. When clamping the simulated tube 3, it applies inward pressure evenly to its outer wall to prevent the clamped part of the simulated tube 3 from sliding axially and to avoid changes in the length of each simulated tube segment 33. When the movable tube clamp 43 is detachably connected to the simulated tube 3, the movable tube clamp 43 connected to the traction line 42 forms a bend at the corresponding tube segment of the simulated tube 3. When the movable tube clamp 43 retracts and contacts the traction box 44, the angle of the bend is less than 90°. When the traction line 42 drives the movable tube clamp 43 to move toward the connecting seat 41, the movable tube clamp 43 pulls the simulated tube 3 and reduces the angle of the bend. Specifically, the bend in the simulated intestinal segment 33 is formed by the line connecting two adjacent fixed tube clamps 22 and the movable tube clamp 43 between them.

[0041] In some embodiments of this application, such as Figure 1-12 As shown, an operation interface 113 is provided through the wall panel 11. The operation interface 113 is sealed by a sealing element when not in operation. The simulation tube 3 is detachably connected to a closed end 32 and a connecting end 31. Specifically, the connection method between the closed end 32 and the connecting end 31 of the simulation tube 3 is one of bolt connection, compression connection, or slot connection. In the bolt connection method, the bolt is screwed into the simulation tube 3 from the outside of the connecting end 31 and abuts against the simulation tube 3 when passing through the connecting end 31. In this case, part of the bolt remains outside the connecting end 31, and the bolt is in contact with the outer wall of the simulation tube 3. The connecting end 31 and the operation interface 113 are detachably connected, specifically through one of bolt connection, snap-fit ​​connection, or slot connection. The closed end 32 is placed inside the housing 1. Furthermore, the two sides of the closed end 32 are not connected.

[0042] In some embodiments of this application, such as Figure 1-12As shown, the simulated tube 3 is flexible. After the simulated tube 3 is connected to the positioning structure 2, the positioning structure 2 divides the simulated tube 3 into multiple simulated intestinal segments 33. From the connecting end 31 to the closed end 32, the simulated intestinal segments 33 are, in sequence: rectal simulated segment 331, sigmoid colon simulated segment 332, descending colon simulated segment 333, transverse colon simulated segment 334, and ascending colon simulated segment 335. There are bends between adjacent simulated intestinal segments 33. The axial length of the transverse colon simulated segment 334 is greater than the straight-line distance between its two ends of the positioning structure 2, and the axial length of the sigmoid colon simulated tube 3 is greater than the straight-line distance between its two ends of the positioning structure 2. The transverse colon simulated segment 334 and the sigmoid colon simulated segment 332 are respectively connected to movable tube clamps 43. Therefore, the shapes of the simulated rectal segment 331, the simulated descending colon segment 333, and the simulated ascending colon segment 335 are relatively fixed, while the lengths of the simulated transverse colon segment 334 and the simulated sigmoid colon segment 332 are more redundant compared to the lengths between adjacent fixed tube clamps 22. Thus, the operator can control the orientation and specific angle of the bend by changing the clamping position of the movable tube clamp 43 on these two simulated intestinal segments 33 and the lifting height of the lifting platform 411, thereby simulating the various distribution patterns that the transverse colon and sigmoid colon may present in the human body, improving the realism of the simulation of the patient's physiological structure and the effectiveness of the simulation training.

[0043] In some embodiments of this application, such as Figure 1-12 As shown, the traction structure 4 also includes a traction box 44 detachably connected to the connecting seat 41. The connection relationship is specifically one of bolt connection, slot connection, snap-fit ​​connection, or nested connection. The traction box 44 has an elastic element 441. The end of the traction line 42 facing away from the movable tube clamp 43 passes through the traction box 44 and is fixedly connected to the elastic element 441. The elastic element 441 is specifically a spring or a clockwork. When the movable tube clamp 43 is not connected to the simulation tube 3, the elastic element 441 is in an energy-releasing extended state. After the movable tube clamp 43 is connected to the simulation tube 3, the energy-stored elastic element 441 maintains the movable tube clamp 43 holding the simulation tube 3 in the traction position through the traction line 42.

[0044] In some embodiments of this application, such as Figure 1-12 As shown, the connecting seat 41 is a lifting platform 411, and the traction box 44 is detachably connected to the end of the lifting platform 411 away from the base plate 12. When the lifting platform 411 extends along its own axis, the simulated tube 3 moves away from the base plate 12 under the traction of the traction line 42 and the movable tube clamp 43. During this process, the angle formed by the intestinal segments on both sides of the movable tube clamp 43 is reduced to increase the degree of tortuosity inside the intestinal tube. When the colonoscope moves to the angle position, the operator can adjust the movement angle and the force of advancement of the colonoscope, and overcome the traction effect of the movable tube clamp 43 on the simulated tube 3 by rotating and hooking the colonoscope body, reducing or eliminating the angle, so that the colonoscope can pass through the obstacle to reach the closed end 32, thereby improving the operator's proficiency in colonoscope insertion and angle-crossing operations.

[0045] In some embodiments of this application, such as Figure 1-12 As shown, the analog tube 3 includes a conductive outer tube 34, which is specifically as follows: Figure 13 As shown, the conductive outer tube 34 is connected to the connecting end 31 via a conductive screw 311. The conductive outer tube 34 is made of aluminum, specifically an aluminum foil tube. As the only metal foil in the flexible packaging material, the aluminum foil tube possesses both conductivity and good flexibility, allowing it to rotate radially or extend and retract axially. A conductive plate 114 is detachably connected to the side wall of the wall panel 11 facing the interior of the housing 1. A conductive interface is provided through the wall panel 11. When the connecting end 31 is connected to the operating interface 113, the conductive screw 311 is pressed between the connecting end 31 and the conductive plate 114. When the conductive interface is energized, the conductive outer tube 34 is energized. The conductive outer tube 34 has good electrical conductivity, enabling it to provide an excellent conductive negative electrode for the electrosurgical blade during simulated polyp or mucosal resection operations, thus replicating the electrosurgical cutting effect in real operations. The simulation tube 3 also includes a flexible, isolated animal colon 35. The isolated animal colon 35 shares significant similarities with the human colon in basic anatomical structure, histology, and core physiological functions, thus simulating the human colon environment. Specifically, the isolated animal colon 35 includes, but is not limited to, an isolated porcine colon. Alternatively, in some embodiments, the conductive outer tube 34 is... Figure 5 , 6 As shown, it is specifically made of stretchable conductive fibers. This configuration allows the conductive outer tube 34 to not only be conductive, but also to stretch or bend along its own axis or bend along its own radial direction. In this embodiment, the two ends of the conductive outer tube 34 in the axial direction are also provided with corrugated sections for easy fixing.

[0046] During simulated training, the animal colon 35 is inflated and contacts the conductive outer tube 34, allowing the animal colon 35 and the conductive outer tube 34 to be synchronously energized. After energization, the user can operate the endoscope and electrocautery device to perform endoscopic insertion training, polyp removal training, and mucosal resection training within the energized animal colon 35. An insulating film is also attached to the outside of the conductive outer tube 34 to prevent electric shock when the user touches the simulated tube 3, thus improving operational safety.

[0047] In some embodiments of this application, such as Figure 1-12 As shown, the gimbal 21 is detachably connected to a positioning bolt 212. When the positioning bolt 212 is tightened, it moves into the gimbal 21 and presses the ball joint 211, so that the shape of the fixing tube clamp 22 and the gimbal 21 is fixed, thereby controlling the direction of the closed end 32 when it passes through and the undulation of the adjacent simulated intestinal segment 33.

[0048] In some embodiments of this application, such as Figure 1-12As shown, the box body 1 is detachably connected to a box cover 10. The box body 1 and the box cover 10 are connected by a hinge 111. When the box cover 10 is connected to the box body 1, the inside of the box body 1 is not connected to the outside. A sealing ring is provided between the box cover 10 and the box body 1 to provide a sealing effect when the box cover 10 is closed. A latch 112 is also provided between the box cover 10 and the box body 1, which is used to tightly fasten the box cover 10 onto the box body 1 when the box cover 10 is closed. The latch 112 works in conjunction with the sealing ring to further improve the sealing performance of the box body 1.

[0049] In some embodiments of this application, such as Figure 1-12 As shown, the fixed pipe clamp 22 includes a surrounding end face 222, on which an anti-slip pad 224 is detachably connected. A limiting protrusion 223 is provided on the surrounding end face 222. The limiting protrusion 223 prevents the anti-slip pad 224 from disengaging when the fixed pipe clamp 22 is opened and closed. The anti-slip pad 224 further increases the frictional resistance between the fixed pipe clamp 22 and the simulated pipe 3. The movable pipe clamp 43 is also provided with an anti-slip pad 224 and a limiting protrusion 223. The purpose of the anti-slip pad 224 and the limiting protrusion 223 on the movable pipe clamp 43 is the same as that on the fixed pipe clamp 22.

Claims

1. A colonoscopy simulation training box, characterized in that, include, The enclosure includes the wall panels and the bottom panel; The positioning structure includes a gimbal and a fixed tube clamp connected by a ball joint. The gimbal is fixedly connected to the base plate. Several positioning structures are provided. When the simulation tube is detachably connected to the fixed tube clamp, the fixed tube clamp restricts the axial and radial movement of the corresponding part of the simulation tube. When the fixed tube clamp rotates relative to the gimbal, it drives the corresponding part of the simulation tube to move and changes the shape of the simulation tube. The traction structure, connected to the base plate, includes a connecting seat and a traction line that are connected to each other. The traction line is also fixedly connected to a movable pipe clamp. When the movable pipe clamp is detachably connected to the simulated pipe, the movable pipe clamp connected to the traction line forms a bend in the corresponding pipe section of the simulated pipe. When the traction line drives the movable pipe clamp to move toward the connecting seat, the movable pipe clamp moves the simulated pipe and reduces the angle of the bend. The traction structure also includes a traction box detachably connected to the connecting seat. The traction box contains an elastic element. The end of the traction line away from the movable tube clamp passes through the traction box and is fixedly connected to the elastic element. The elastic element maintains the movable tube clamp holding the simulated tube in the traction position via the traction line. The connecting seat is a lifting platform. The traction box is detachably connected to the end of the lifting platform away from the base plate. When the lifting platform extends along its own axial direction, the simulated tube moves away from the base plate under the traction of the traction line and the movable tube clamp. During this process, the angle between the intestinal segments on both sides of the movable tube clamp decreases. The simulated tube includes a conductive outer tube and an animal colon. The animal colon is located inside the conductive outer tube. The conductive outer tube is connected to the connecting end via a conductive screw. A conductive plate is detachably connected to the side wall of the wall panel facing the interior of the box. A conductive interface is provided through the wall panel. When the connecting end is connected to the operating interface, the conductive screw is pressed between the connecting end and the conductive plate. When the conductive interface is energized, the conductive outer tube is energized.

2. The colonoscopy simulation training box according to claim 1, characterized in that, The wall panel is provided with an operating interface, and the simulation tube is detachably connected to a closed end and a connected end. The connected end is detachably connected to the operating interface, and the closed end passes through a fixed pipe and is placed inside the box.

3. The colonoscopy simulation training box according to claim 2, characterized in that, The simulated tube is flexible. When the simulated tube is connected to the positioning structure, the positioning structure divides the simulated tube into multiple simulated intestinal segments. From the connecting end to the closed end, the simulated intestinal segments are, in order: rectal simulated segment, sigmoid colon simulated segment, descending colon simulated segment, transverse colon simulated segment, and ascending colon simulated segment. There are bends between adjacent simulated intestinal segments. The axial length of the transverse colon simulated segment is greater than the straight-line distance between its two ends of the positioning structure, and the axial length of the sigmoid colon simulated tube is greater than the straight-line distance between its two ends of the positioning structure. The transverse colon simulated segment and the sigmoid colon simulated segment are respectively connected to movable tube clamps.

4. The colonoscopy simulation training box according to claim 1, characterized in that, The gimbal is detachably connected to a positioning bolt, which moves inward into the gimbal and presses against the ball joint of the gimbal when tightened.

5. A colonoscopy simulation training box according to claim 1, characterized in that, The box body is detachably connected to a lid. When the lid is connected to the box body, the inside of the box body is not connected to the outside.

6. A colonoscopy simulation training box according to claim 1, characterized in that, The fixing pipe clamp includes a circumferential end face, and the circumferential end face is detachably connected to an anti-slip pad.

Images