Digestive endoscopy ESD operation training model

Abstract

The utility model relates to an ESD (Electro-Static Discharge) operation training model for a digestive endoscopy, which adopts an adjustable box-net type training model, and compared with the prior art, the ESD operation training model for the digestive endoscopy has the advantages that: 1) a net bag is tensioned in a box body, a stomach module is placed in the net bag, the abdominal cavity of a human body is simulated through the box body, and a net film wrapping the stomach of the human body is simulated through the net bag; a human stomach is simulated through the pig stomach module, and the stomach module is provided with an esophagus section, so that an esophageal mucosa dissection operation under an endoscope can be simulated, and a beginner can quickly and conveniently master such operation skills; 2) by utilizing a rotating unit and a fixing clamp, not only can the position of the whole pig stomach module be flexibly adjusted, but also the position of the traction part after the length is adjusted can be fixed; traction force can be prevented from being concentrated on diagonal lines of the net bag through traction of the two traction lines; and 3) the manufacturing cost of the whole training model is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of medical training, in particular to a digestive endoscopy ESD surgery training model. Background Art

[0002] ESD surgery (also known as endoscopic submucosal dissection) is a standard minimally invasive treatment for precancerous lesions and early cancers of the digestive tract. It has the characteristics of less trauma, more complete pathological specimen collection, more thorough treatment, and lower recurrence rate. It can allow more early digestive tract cancers to be completely removed at one time under endoscopy, eliminating the pain of open surgery and organ removal. ESD surgery is mainly suitable for the following diseases: 1) Giant flat polyps: polyps over 2 cm, especially flat polyps, can be completely removed at one time using ESD surgery; 2) Early cancer: If it is determined that the tumor is confined to the mucosal layer and the submucosal layer without lymph node metastasis, ESD surgery can achieve the same therapeutic effect as surgery; 3) Submucosal tumors: lipomas, stromal tumors, and carcinoids diagnosed by ultrasound endoscopy, if the location is shallow, can be completely removed by ESD surgery; if the tumor is deep, ESD dissection of the lesion is often accompanied by digestive tract perforation, but it is not recommended to force dissection. Doctors with rich experience in endoscopic treatment can try to use it. In the above operation process, the lesion location must be determined first, followed by staining, and a needle incision knife is used to mark the lesion in a circle, and then an opening is made with a needle incision knife, and an IT knife (high-frequency electrocoagulation knife) is used for incision and peeling. However, the operation is usually accompanied by the risk of bleeding, perforation, and post-perforation chest and abdominal infection. As a result, for doctors who have just started practicing ESD surgery, the risk of operating and training on patients is extremely high. How to enable new doctors to better avoid such surgical risks and master surgical skills has become a technical problem that needs to be solved urgently in this field. Utility Model Content

[0003] In order to solve the technical problems mentioned in the background technology, the utility model proposes a digestive endoscopic ESD surgery training model, and the specific technical solution is as follows:

[0004] A digestive endoscopy ESD surgery training model, wherein a net bag is arranged in a box body, the box body has an upper opening, a stomach module is placed on the net bag through the upper opening, the net bag is connected by a plurality of traction lines, a plurality of fixing clips are arranged on both sides of the box body, the traction lines are connected to the fixing clips, the length of each traction line is adjusted by the plurality of fixing clips, and the corner of each net bag is pulled by a group of traction lines, a group of traction lines includes two traction lines, which are respectively arranged on both sides of the corner of the net bag, and then the posture of the stomach module is adjusted by the plurality of traction lines.

[0005] The net bag can at least simulate the greater omentum that supports the human stomach, and the net bag is preferably made of nylon.

[0006] The gastric module uses the stomach of a mammal with an esophageal segment and a small intestine segment, and the mammalian stomach needs to be the same or similar to the human stomach structure, and can realistically simulate the human stomach.

[0007] The box body is composed of five panels (i.e., the front panel, the rear panel, the left panel, the right panel and the bottom panel that are connected to each other), and its upper part is open to facilitate the placement of the net pocket and the gastric module; the box body can be integrally formed or can be made by splicing multiple panels.

[0008] Both the front and rear sides (front panel, rear panel) of the box body are rotatably connected to the rotating unit, and the rotating unit is used to adjust the deflection angle of the gastric module.

[0009] The rotating unit includes a support plate and a support seat that are connected to each other. The two support seats and the support plate form a U-shaped shape. The two support seats are respectively rotatably connected to the front / rear panel. A second through hole is provided on the rotating unit. The second through hole and the first through hole are in the same axial direction. A socket is circumferentially provided in the second through hole, and a pin is inserted into the socket; on the box body, a bearing is provided around the first through hole, and a semi-circular sliding groove is provided along the circumference of the first through hole. A plurality of counterbores are provided in the sliding groove, and the pin can slide along the sliding groove and be inserted into the counterbore to fix the deflection position of the box body.

[0010] The pin includes a pin head and a pin rod. The pin head is arranged towards the outside of the socket, the pin rod is inserted into the socket, a stop portion is provided on the pin rod, and a spring is also sleeved on the pin rod. The spring is arranged between the stop portion and the support plate.

[0011] Through the rotating unit and in combination with the fixing clip, the flipping angle of the gastric module is adjusted, so as to simulate the gastric states in various body positions such as the left lateral decubitus position and the right lateral decubitus position of the human body, and the state of the gastric module can be observed through the transparent box body.

[0012] Preferably, the corners of each net pocket are pulled by two adjacent pulling lines. The two pulling lines are respectively arranged on both sides of the corner of the net pocket. One pulling line passes through a set of connecting sockets and sockets, and the adjacent pulling line passes through another set of connecting sockets and sockets.

[0013] A connecting pipe is provided on the box body. The connecting pipe includes a first connecting pipe and a second connecting pipe. Among them, the first connecting pipe is provided at the front panel and is communicated with the esophageal segment, and the second connecting pipe is provided at the left panel or the right panel and is communicated with the small intestine segment to simulate the running and position of the stomach and the small intestine segment in the abdominal cavity.

[0014] Preferably, the esophagus segment passes through the first connecting tube cavity and is everted and fixed on the proximal outer wall of the first connecting tube, and the small intestine segment passes through the second connecting tube cavity and is everted and fixed on the proximal outer wall of the second connecting tube.

[0015] The front panel is provided with an operation connection port, and the operation connection port includes a first through hole, and the first through hole is communicated with the first connection pipe and allows the endoscope to pass therethrough.

[0016] An electrode sheet unit is attached to the outside of the stomach module corresponding to the pylorus, and the electrode sheet unit is connected to the electric control unit through a plug wire.

[0017] In summary, the digestive endoscopic ESD surgery training model of the utility model has the following advantages over the prior art:

[0018] 1) By stretching a net bag in an acrylic box, placing a stomach module made of fresh animal stomach in the net bag, and then simulating the human abdominal cavity and thoracic cavity through the box and the connecting tube, simulating the omentum wrapped by the human stomach through the net bag, and simulating the human stomach and human esophagus through the pig stomach module, beginners can quickly and conveniently master such surgical skills through this training model;

[0019] 2) Compared with the existing training devices, the adapter unit and the fixing clip can be used for adjustment. Not only can the training model be adjusted quickly manually, which significantly improves the training efficiency, but also the position of the whole stomach module can be flexibly adjusted, which is convenient for beginners to judge. In addition, by pulling the corners of the net bag with two pulling lines, it can avoid the traction force being concentrated in the diagonal direction of the net bag to cause obvious wrinkles.

[0020] 3) The main body of the ESD surgery training model is made of acrylic board, the traction wire fixing device uses common fixing clips and paper clips, and nylon fabric is used as the net bag. Compared with the existing technology, the production cost of the model is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional structural diagram of a digestive endoscopic ESD surgery training model according to an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the combination of the digestive endoscopic ESD surgery training model and the stomach module of the utility model;

[0023] Figure 3 This is a cross-sectional view of the latch structure of the utility model;

[0024] Figure 4 A three-dimensional structural schematic diagram of a connection method of the esophagus segment (or small intestine segment) and the connecting tube of the utility model;

[0025] In the figure, 1 - box body, 2 - rotating unit, 1 - 1 - first through - hole, 1 - 2 - bearing, 1 - 3 - sliding groove, 1 - 4 - counterbore, 2 - rotating unit, 2 - 1 - support plate, 2 - 2 - second through - hole, 2 - 3 - support seat, 2 - 4 - jack, 2 - 5 - pin, 3 - mesh bag, 4 - fixed hook, 5 - connecting pipe, 6 - connecting jack, 7 - pulling wire, 8 - fixed clamp, 9 - endoscope, 10 - gastric module, 11 - electrode patch unit. Detailed implementation mode

[0026] The following is a clear and complete description of the technical solutions in the above - mentioned utility model content through specific implementation modes and in combination with the attached drawings of the specification. Obviously, those skilled in the art should understand that: the described implementation modes are only some implementation modes of the present utility model, rather than all implementation modes.

[0027] Please examine Figures 1 - 3 , a training model for endoscopic ESD surgery. A mesh bag 3 is arranged in the box body 1. The upper part of the box body 1 is open. The gastric module 10 is placed on the mesh bag 3 through the upper opening. The mesh bag 3 is connected by a plurality of pulling wires 7. A plurality of fixed clamps 8 are arranged on the two side walls of the box body 1. The pulling wires 7 are connected to the fixed clamps 8. The lengths of the respective pulling wires 7 are adjusted through the plurality of fixed clamps 8, and thus the posture of the gastric module 10 is adjusted.

[0028] The mesh bag 3 can simulate the greater omentum or other diaphragm structures that support the human stomach, and the mesh bag is made of nylon material.

[0029] The gastric module 10 uses the stomach of a mammal with an esophageal segment and a small intestine segment, and the stomach of the mammal needs to be the same as or similar to the human stomach structure, and can realistically simulate the human stomach. In this embodiment, a fresh pig stomach is preferably used. The length of the esophageal segment outside the cardia of the pig stomach is not less than 10 cm, and the length of the small intestine segment outside the pylorus is not less than 10 cm.

[0030] The box body 1 is a five - sided box body, composed of a front panel, a rear panel, a left panel, a right panel and a bottom panel. The upper part of the box body is open, which is convenient for placing the mesh bag 3 and the gastric module 10. The box body 1 is made of one of transparent acrylic plates, transparent resin materials or glass materials, and the thickness of the box body is at least 5 mm. In this embodiment, the bottom surface of the box body is 50 cm long, 30 cm wide and 30 cm high. The box body 1 can be integrally formed or made by splicing multiple panels.

[0031] By tensioning the four corners of the mesh bag 3 through a plurality of pulling wires 7, the tensioning state of the gastric module 10 in the woven mesh 3 can be flexibly and finely adjusted. Specifically, when fixing the position of the pulling wire, only two adjacent pulling wires need to be clamped by the fixed clamp 8.

[0032] The corners of each mesh pocket 3 are pulled by two adjacent pulling lines 7. The two pulling lines 7 are respectively arranged on both sides of the corner of the mesh pocket 3. One pulling line passes through a set of connection jacks and sockets, while the adjacent pulling line passes through a set of connection jacks and sockets. The above setting method can avoid obvious wrinkles (real human gastric omentum will not have obvious wrinkles) in the four corner directions (diagonal directions) of the mesh pocket 3 when the traction force of the mesh pocket 3 is large.

[0033] In addition to arranging the mesh pocket 3 below the gastric model 10, the mesh pocket 3 can also be arranged above the gastric model 1. The four corners of the upper mesh pocket and the lower mesh pocket are tied together. With such a setting, when the box body is flipped, simulating the left and right lateral positions of the human body, the wrapping and supporting effects of the omentum on the human stomach can be more accurately simulated.

[0034] The rotating unit 2 includes a support plate 2-1 and a support base 2-3 which are connected to each other. The two support bases 2-3 and the support plate 2-1 form a U-shaped shape. The two support bases 2-3 are respectively rotatably connected to the front / rear panels. A second through hole 2-2 is arranged on the rotating unit 2. The second through hole 2-2 and the first through hole 1-1 are in the same axial direction. Jacks 2-4 are arranged circumferentially on the second through hole 2-2, and pins 2-5 are inserted into the jacks 2-4; on the box body 1, a bearing 1-2 is arranged around the first through hole 1-1, and a semi-circular sliding groove 1-3 is arranged along its circumference. A plurality of counterbores 1-4 are opened in the sliding groove 1-3. The pin 2-5 can slide along the sliding groove 1-3 and be inserted into the counterbore 1-4 to fix the deflection position of the box body 1.

[0035] As Figure 3 shown in the figure, the pin 2-5 includes a pin head 2-5-1 and a pin rod 2-5-2. The pin head 2-5-1 is arranged towards the outside of the jack 2-4. The pin rod 2-5-2 is inserted into the jack 2-4. A stop portion 2-5-3 is arranged on the pin rod 2-5-2. A spring 2-5-4 is also sleeved on the pin rod 2-5-2. The spring 2-5-4 is arranged between the stop portion 2-5-3 and the support plate 2-1.

[0036] As is well known, the human stomach is an irregular sac-like structure. When the human body lies flat, in the left lateral position, or in the right lateral position, the human stomach will also adjust with the body posture. Therefore, the pathological changes such as cancer / tumor in the stomach will also change relative to the external reference objects of the human body. Therefore, how to accurately judge the state of the stomach and precisely find the pathological changes has become a surgical problem faced by novice doctors or intern doctors. In this embodiment, through the rotating unit and multiple fixing clips, the flipping angle of the gastric module can be adjusted easily and efficiently, and then the gastric states in various postures such as the left lateral position, the right lateral position, and lying flat of the human body can be simulated, and the state of the gastric module can be observed through the transparent box body.

[0037] Two fixed hooks 4 are provided on the inner wall of the box body 1, and the two fixed hooks 4 are respectively arranged in the middle of the box body 1 in the length direction. In order to connect the esophageal segment and the small intestine segment of the gastric module 10, a connecting pipe 5 is provided on the box body. The connecting pipe includes a first connecting pipe and a second connecting pipe. Among them, the first connecting pipe is provided on the front panel and communicates with the esophageal segment, and the second connecting pipe is provided on the left panel or the right panel and communicates with the small intestine segment to simulate the running and position of the stomach and small intestine segments in the abdominal cavity.

[0038] Please examine Figure 4 , in another implementation, the first connecting pipe is a PPR material pipe with a diameter of 35 mm and a length of 100 mm. The esophageal segment passes through its interior and turns out at the proximal end and is fixed to the outer wall of the pipe using a pipe clamp. The internal space of the first connecting pipe is convenient for simulating the state of the human esophagus in the thoracic cavity. The second connecting pipe is provided on the right panel facing the front panel. The second connecting pipe is a PPR material pipe with a diameter of 25 mm and a length of 60 mm. The small intestine segment passes through its interior, and its fixing method is the same as that of the esophageal segment. The above connection method between the first connecting pipe and the esophageal segment and the connection method between the second connecting pipe and the small intestine segment can more vividly simulate the running position of the human stomach in the abdominal organs when the human body is in the supine position. In this embodiment, it is required to purchase a fresh pig stomach within 6 hours after slaughter, and the length of the esophageal segment is reserved at least 15 cm, and the length of the small intestine segment is taken at least 10 cm.

[0039] An electrode patch unit 11 is attached to the outside of the gastric module 10 corresponding to the pylorus. The electrode patch unit 11 is connected to the electronic control unit through corresponding wires. When the electrode patch unit 11 is cut by endoscopic submucosal dissection surgery, an electric arc is formed between the IT knife and the electrode patch unit 11, which is convenient for the IT knife to perform peeling and cutting.

[0040] The above surgical training model can fully ensure the operation touch and force feedback of novice doctors during surgical training, and can truly, conveniently and effectively improve the skills of beginners in this type of surgery and enhance their confidence. At the same time, since acrylic plates, mesh bags, plugs, etc. are common materials, on the premise of ensuring the authenticity of training, the production cost of the surgical training model of the present utility model is lower, the training environment is simpler, and it is easier for beginners to get started and operate.

[0041] In summary, the ESD operation training model for digestive endoscopes provided by the present utility model pulls a mesh bag in an acrylic box body, places a gastric module made of a fresh animal stomach in the mesh bag, then simulates the human abdominal cavity through the box body, simulates the omentum wrapped around the human stomach through the mesh bag, simulates the human stomach through the pig stomach module, and can also simulate and complete the ESD operation training in the test tube through the esophageal module fixed inside the connecting tube, facilitating beginners to quickly and conveniently master the operation skills of this type of operation through this training model; the position of the pig stomach module can be flexibly adjusted through devices such as fixing clips to grasp the cutting position and cutting force; due to the use of inexpensive and easily obtainable materials, the manufacturing cost of the entire model is lower than that of the prior art.

Claims

1. A digestive endoscopic ESD surgery training model, characterized by: A net bag is arranged in the box body, and a stomach module is placed on the upper part of the net bag. The net bag is connected by multiple pulling lines. Multiple fixing clips are arranged on both sides of the box body. The pulling lines are connected to the fixing clips. The lengths of the pulling lines are adjusted by the multiple fixing clips. The corners of each net bag are pulled by a group of pulling lines. A group of pulling lines includes two pulling lines, which are respectively arranged on both sides of the corners of the net bag. Then, the posture of the stomach module is adjusted by multiple groups of pulling lines.

2. A digestive endoscopic ESD surgery training model according to claim 1, characterized in that: The net bag can simulate the greater omentum supporting the human stomach. The stomach module adopts a mammalian stomach with an esophagus segment and a small intestine segment. The mammalian stomach needs to have the same or similar structure to the human stomach and can simulate the human stomach.

3. A digestive endoscopic ESD surgery training model according to claim 2, characterized in that: The box body is composed of multiple panels, which include a front panel, a rear panel, a left panel, a right panel and a bottom panel that are interconnected, so as to facilitate the placement of the net bag and the stomach module; the box body can be formed in one piece or made by splicing the panels.

4. A digestive endoscopic ESD surgery training model according to claim 1, characterized in that: The front and rear sides of the box are rotatably connected to a rotating unit, and the rotating unit is used to adjust the deflection angle of the stomach module.

5. A digestive endoscopic ESD surgery training model according to claim 4, characterized in that: The rotating unit includes a supporting plate and a supporting seat that are connected to each other. The two supporting seats and the supporting plate form a U-shape. The two supporting seats are rotatably connected to the front / rear panel respectively. A second through hole is arranged on the rotating unit. The second through hole is in the same axial direction as the first through hole. A plug hole is arranged circumferentially of the second through hole, and a pin is inserted in the plug hole. A bearing is arranged around the first through hole on the box body, and a semi-annular sliding groove is arranged along the circumference of the first through hole. A plurality of countersunk holes are provided in the sliding groove. The pin can slide along the sliding groove and be inserted into the countersunk hole to fix the deflection position of the box body.

6. A digestive endoscopic ESD surgery training model according to claim 5, characterized in that: The latch includes a latch head and a latch rod, wherein the latch head is arranged toward the outside of the socket, the latch rod is inserted into the socket, a stopper is arranged on the latch rod, a spring is also sleeved on the latch rod, and the spring is arranged between the stopper and the support plate.

7. A digestive endoscopic ESD surgery training model according to claim 3, characterized in that: The box body is provided with connecting tubes, which include a first connecting tube and a second connecting tube, wherein the first connecting tube is provided at the front panel and is connected to the esophagus segment, and the second connecting tube is provided at the left panel or the right panel and is connected to the small intestine segment, so as to simulate the course and position of the stomach and small intestine segments in the abdominal cavity.

8. A digestive endoscopic ESD surgery training model according to claim 7, characterized in that: The front panel is provided with an operation connection port, and the operation connection port includes a first through hole, and the first through hole is communicated with the first connection pipe and allows the endoscope to pass therethrough.

9. A digestive endoscopic ESD surgery training model according to claim 1, characterized in that: Electrode sheets are applied to the outside of the stomach model, mainly near the small intestine segment, to facilitate cutting with an IT knife during surgery.

10. A digestive endoscopic ESD surgery training model according to claim 3, characterized in that: A connecting tube is arranged on the box body, and the connecting tube includes a first connecting tube and a second connecting tube, wherein an esophageal segment passes through the cavity of the first connecting tube, and the esophageal segment is turned outward and fixed on the outer wall of the proximal end of the first connecting tube, and a small intestine segment passes through the cavity of the second connecting tube, and the small intestine segment is turned outward and fixed on the outer wall of the proximal end of the second connecting tube.

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