3D printing simulation device for hepatobiliary pancreatic operation training
By designing the cross-reverse motion of the ejector component, transmission mechanism, and air blowing mechanism, the problem of excessive adhesion between the 3D printed model and the placement plate was solved, achieving labor-saving ejection, protection of model integrity, and improved cleaning efficiency.
Patent Information
- Application Number
- CN202511627119.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-01-09
AI Technical Summary
During the 3D printing process, if the model adheres too tightly to the placement plate, it will make the unloading operation difficult, and excessive force can easily damage the model structure and affect the integrity of the model.
A 3D printing simulation device for training liver, gallbladder and pancreas surgery was designed, comprising a material removal component, a transmission mechanism, a buffer mechanism and an air blowing mechanism. Material removal is achieved through the cross-reverse movement of the moving block and the material removal block. Combined with rack and pinion meshing transmission and buffer spring reset, and air blowing cleaning, the operation process is simplified and the integrity of the model is protected.
It achieves labor-saving material removal, avoids model damage, ensures model integrity, simplifies the operation process, improves material removal smoothness and cleaning efficiency, and lowers the barrier to entry for users.
Smart Images
Figure CN121290764A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of 3D printing, in particular to a 3D printing simulation device for liver, gallbladder and pancreas surgery training. BACKGROUND
[0002] The 3D printing simulation device for liver, gallbladder and pancreas surgery training is an important innovation in the field of medical education in recent years, which provides a high-fidelity surgery operation training environment for surgeons by combining 3D printing technology and simulation materials, performs three-dimensional reconstruction based on patient CT / MRI data, and precisely reproduces the anatomical structure of organs such as liver, bile duct and pancreas, including blood vessel distribution, tumor location and adjacent relationship, through 3D printing technology to produce 1:1 scale physical models. The 3D printing simulation device is a special device integrating "digital modeling-material printing-bionic adaptation-training scene integration", and its core goal is to restore the anatomical structure, tissue mechanical properties and operation feel of the liver, gallbladder and pancreas region.
[0003] During the 3D printing process, the model is often tightly adhered to the placement plate after printing and drying, which increases the resistance during subsequent model stripping operation and significantly increases the operation difficulty. If too much force is applied to peel off the model, the model structure is easily damaged, affecting the integrity of the model. SUMMARY
[0004] To solve the above technical problems, the present application is implemented by the following technical scheme: a 3D printing simulation device for liver, gallbladder and pancreas surgery training, comprising: a base, the top of the base is fixedly connected with a placement plate, and the top of the placement plate is fixedly connected with a 3D printer; a stripping component for stripping the 3D printing simulation materials on the placement plate, the side surface of the stripping component is fixedly connected with the inner side of the base; The material stripping component comprises a material stripping frame, the inner side of the material stripping frame is uniformly provided with a sliding rod, the side surface of the sliding rod is in sliding connection with the inner side of the material stripping frame, the top of the sliding rod is fixedly connected with the bottom of a moving block, the bottom of the sliding rod is fixedly connected with a sliding plate, the side surface of the sliding plate is in sliding connection with the inner side of the base, the top of the material stripping frame is fixedly connected with a material stripping block, the inner side of the material stripping block is in sliding connection with a moving frame, the top of the moving frame is fixedly connected with the moving block, the moving block and the material stripping block are arranged in sequence and cross each other, the simulated material on the placement plate is subjected to the material stripping and discharging work, so that the discharging work is more labor-saving, the moving block and the material stripping block are concentrically arranged with the mesh of the placement plate, the side surface of the moving block and the material stripping block is in sliding connection with the inner side of the placement plate, the inner side of the material stripping block is fixedly connected with a buffer mechanism, the two sides of the material stripping frame are fixedly connected with a blowing mechanism, when the handrail drives the material stripping frame to move downward, the material stripping frame drives the blowing mechanism to perform the blowing work on the top of the placement plate, the inner side of the sliding plate is fixedly connected with a transmission mechanism, the side away from the blowing mechanism of the material stripping frame is fixedly connected with a handrail, the side surface of the handrail is in sliding connection with the inner side of the base. Preferably, the material stripping frame moves downward while synchronously extruding the transmission mechanism, the transmission mechanism transmits power to the sliding plate, so as to drive the sliding plate to move upward along the inner side of the base; the sliding plate drives the moving frame and the moving block through the sliding rod to move upward along the inner side of the placement plate, since the moving block and the material stripping block are cross-distributed in the placement plate, the two blocks form the reverse action of upward movement of the moving block and downward movement of the material stripping block, and jointly exert force on the model on the placement plate, so as to finally realize the material stripping of the simulated material. Preferably, the transmission mechanism comprises a rotating shaft, a rack one and a rack two, the material stripping block moves downward while synchronously driving the rack one to move downward together, one end of the rotating shaft away from the gear is fixedly connected with the inner side of the base, one end of the rotating shaft is rotatably connected with the gear, the rack two moves upward while synchronously driving the sliding plate to move upward along the inner side of the base, the sliding plate transmits power to the moving frame through the sliding rod, and then drives the moving block to move upward along the inner side of the placement plate, the top of the rack one is fixedly connected with the bottom of the material stripping block, the side surface of the rack two is fixedly connected with the inner side of the sliding plate, the side surfaces of the rack one and the rack two are in meshing connection with the inner side of the gear, since the rack one and the gear are in meshing state, the linear movement of the rack one is converted into the rotary movement of the gear. Preferably, the buffer mechanism comprises a round rod, the bottom of the round rod is fixedly connected with the top of the moving frame, the top of the round rod is slidably connected with the inner side of the stripping block, a connecting spring is sleeved on the round rod, the top of the connecting spring is fixedly connected with the inner side of the stripping block, the bottom of the connecting spring is fixedly connected with the top of the moving frame, the moving block generates a pulling force on the connecting spring synchronously, and drives the round rod to move upwards together with the round rod, in the process, the connecting spring is stretched, mechanical energy is converted into elastic potential energy and stored, and a power basis is provided for subsequent resetting, so as to facilitate the next printing work. Preferably, the blowing mechanism comprises a blowing frame and a connecting shaft, one end of the connecting shaft away from the piston rod is fixedly connected with the side of the stripping frame, the stripping frame drives the piston rod to move downwards in the piston cylinder through the connecting shaft, in the process, the space in the piston cylinder is expanded, gas is inhaled and stored, and a gas source is reserved for subsequent blowing, one end of the connecting shaft is fixedly connected with the piston rod, the side of the piston rod is slidably connected with the inner side of the piston cylinder, the side of the blowing frame is fixedly connected with the inner side of the 3D printer, the side of the blowing frame close to the placing plate is uniformly provided with gas holes, and the inner side of the blowing frame is fixedly connected with a guide plate, because the guide plate is arranged on the inner side of the blowing frame, the sprayed gas is constrained and guided by the guide plate, finally flows along the guide direction through the gas holes on the blowing frame, and is blown to the top of the placing plate, so that the gas sprayed in the piston cylinder can pass through the gas holes on the blowing frame along the guide plate, and the placing plate is blown, so that the top of the placing plate is blown, the inner side of the guide plate is fixedly connected with the piston cylinder, the side of the piston cylinder is fixedly connected with the inner side of the blowing frame, the handrail is lifted upwards, the stripping frame is reversely moved upwards, and the stripping frame drives the piston rod to move upwards in the piston cylinder through the connecting shaft; the piston rod moves upwards to extrude the gas in the cylinder, so that the gas is sprayed from the piston cylinder.
[0005] The application provides a 3D printing simulation device for liver, gallbladder and pancreas surgery training. 1. The 3D printing simulation device for liver, gallbladder and pancreas surgery training is provided with a stripping component, stripping is realized through the cross reverse movement of the moving block and the stripping block, the operation strength can be reduced, the model can be prevented from being damaged due to excessive force, the model integrity is ensured, multiple functions such as stripping, cleaning and resetting can be realized synchronously through single operation of the handrail, the operation process is simplified, and the use threshold is reduced.
[0006] 2. The 3D printing simulation device for liver, gallbladder and pancreas surgery training is provided with a transmission mechanism, a rack and pinion meshing transmission structure is adopted, the synchronous and stable movement of the stripping block and the moving block is ensured, the stripping is prevented from being not smooth due to transmission jamming, and the smoothness of the stripping process is improved.
[0007] 3. The 3D printing simulation device for hepatobiliary and pancreatic surgery training is provided with a buffer mechanism, after the model stripping work is completed, the connecting spring releases the elastic potential energy, drives the moving block and the moving frame to reset, and the moving frame resets in the inner space of the stripping block, and prepares for the subsequent 3D printing work.
[0008] 4. The 3D printing simulation device for hepatobiliary and pancreatic surgery training is provided with a blowing mechanism, which can trigger blowing by lifting the handrail, and the airflow direction is guided by the guide plate in the inner side of the blowing frame, so that the gas can accurately act on the top of the placing plate, avoiding the dispersion of airflow to cause cleaning dead angle, reducing the residue of debris, reducing the influence of debris on model adhesion accuracy during subsequent printing, and replacing manual cleaning of debris with airflow cleaning, which can avoid scratching the surface of the placing plate or leaving hard objects to scratch the next printed model. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 The figure is a structural diagram of the 3D printing simulation device for hepatobiliary and pancreatic surgery training of the application; Figure 2 The figure is a structural diagram of the placing plate of the application; Figure 3 The figure is a structural diagram of the stripping component of the application; Figure 4 The figure is a structural diagram of the stripping frame of the application; Figure 5 The figure is a structural diagram of the moving frame of the application; Figure 6 The figure is a structural diagram of the moving frame of the application; Figure 4 The figure is a structural diagram of the moving frame of the application; Figure 7 The figure is a structural diagram of the moving frame of the application; Figure 5 The figure is a structural diagram of the moving frame of the application; Figure 8 The figure is a structural diagram of the blowing mechanism of the application; Figure 9 The figure is a structural diagram of the moving frame of the application; Figure 8 The figure is a structural diagram of the moving frame of the application.
[0010] In the figure: 1, base; 2, 3D printer; 3, stripping component; 31, stripping frame; 32, transmission mechanism; 321, rotating shaft; 322, gear; 323, rack one; 324, rack two; 33, sliding plate; 34, sliding rod; 35, buffer mechanism; 351, round rod; 352, connecting spring; 36, stripping block; 37, moving frame; 38, moving block; 39, blowing mechanism; 391, blowing frame; 392, air hole; 393, connecting shaft; 394, piston rod; 395, piston cylinder; 396, guide plate; 310, handrail; 4, placing plate. DETAILED DESCRIPTION
[0011] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.
[0012] Embodiment one, please refer to Figures 1-2 The present application provides a technical solution: a 3D printing simulation device for hepatobiliary and pancreatic surgery training, comprising: The base 1 is fixedly connected with the placing plate 4 at the top, and the placing plate 4 is fixedly connected with the 3D printer 2 at the top; The material removal component 3 is used for material removal work on the 3D printing simulation materials on the placing plate 4, and the side surface of the material removal component 3 is fixedly connected with the inner side of the base 1; Please refer to Figures 3-5 The material removal component 3 includes the material removal frame 31, the inner side of the material removal frame 31 is uniformly provided with the slide rod 34, the side surface of the slide rod 34 is slidingly connected with the inner side of the material removal frame 31, the top of the slide rod 34 is fixedly connected with the bottom of the moving block 38, the bottom of the slide rod 34 is fixedly connected with the sliding plate 33, the side surface of the sliding plate 33 is slidingly connected with the inner side of the base 1, the top of the material removal frame 31 is fixedly connected with the material removal block 36, the inner side of the material removal block 36 is slidingly connected with the moving frame 37, the top of the moving frame 37 is fixedly connected with the moving block 38, the moving block 38 and the material removal block 36 are sequentially and alternately arranged, the moving block 38 and the material removal block 36 are concentrically arranged with the mesh of the placing plate 4, the side surfaces of the moving block 38 and the material removal block 36 are slidingly connected with the inner side of the placing plate 4, the inner side of the material removal block 36 is fixedly connected with the buffer mechanism 35, both sides of the material removal frame 31 are fixedly connected with the air blowing mechanism 39, the inner side of the sliding plate 33 is fixedly connected with the transmission mechanism 32, the side of the handrail 310 away from the air blowing mechanism 39 of the material removal frame 31 is fixedly connected with the handrail 310, and the side surface of the handrail 310 is slidingly connected with the inner side of the base 1; When the model completed by 3D printing on the placing plate 4 is removed, the handrails 310 are pressed downward by both hands, the handrails 310 drive the material removal frame 31 to move downward in the inner side of the base 1, and then drive the material removal block 36 to move downward synchronously and separate from the placing plate 4; Meanwhile, the transmission mechanism 32 is pressed by the stripper 31 during the downward movement, so that the transmission mechanism 32 drives the sliding plate 33 to move upward inside the base 1, and the sliding plate 33 drives the moving frame 37 and the moving block 38 to move upward inside the placing plate 4 through the sliding rod 34, so that the moving block 38 and the stripper 36 are distributed in the placing plate 4 in a cross manner, and the upward movement of the moving block 38 and the downward movement of the stripper 36 are opposite to each other, so that the model on the placing plate 4 is removed; after the removal of the model, the buffer mechanism 35 drives the moving block 38 to automatically reset to the initial position; In addition, the blowing mechanism 39 is linked to move downward with the stripper 31 during the downward movement, so that the blowing mechanism 39 blows the top of the placing plate 4, thereby removing the model debris after the removal of the model and cleaning the placing plate 4; Please refer to Figure 6 The transmission mechanism 32 includes a rotating shaft 321, a rack one 323 and a rack two 324, one end of the rotating shaft 321 away from the gear 322 is fixedly connected to the inner side of the base 1, one end of the rotating shaft 321 is rotatably connected with the gear 322, the top of the rack one 323 is fixedly connected to the bottom of the stripper 36, the side of the rack two 324 is fixedly connected to the inner side of the sliding plate 33, and the sides of the rack one 323 and the rack two 324 are meshingly connected to the inner side of the gear 322; When the handrail 310 is pressed, the handrail 310 drives the stripper 31 to move downward inside the base 1, and the stripper 36 moves downward inside the base 1; during the downward movement of the stripper 36, the rack one 323 moves downward, and the gear 322 rotates under the driving of the rack one 323, and then drives the rack two 324 to move upward through the meshing relationship; The upward movement of the rack two 324 drives the sliding plate 33 to move upward, and finally the sliding plate 33 drives the moving frame 37 and the moving block 38 to move upward inside the placing plate 4 through the sliding rod 34, so that the model is conveniently removed; Please refer to Figure 7 The buffer mechanism 35 includes a round rod 351, the bottom of the round rod 351 is fixedly connected to the top of the moving frame 37, the top of the round rod 351 is slidably connected to the inner side of the stripper 36, the connecting spring 352 is sleeved on the round rod 351, the top of the connecting spring 352 is fixedly connected to the inner side of the stripper 36, and the bottom of the connecting spring 352 is fixedly connected to the top of the moving frame 37; When the model on the placing plate 4 is removed, the sliding plate 33 drives the moving frame 37 and the moving block 38 to move upward inside the placing plate 4, and the moving block 38 drives the connecting spring 352 and the round rod 351 to move upward at the same time; After the model is finished, the spring 352 will release the elastic potential energy, driving the moving block 38 and the moving frame 37 to reset, and the moving frame 37 will complete the reset movement in the inner space of the stripping block 36, preparing for the subsequent 3D printing work; Please refer to Figures 8-9 , the blowing mechanism 39 includes a blowing frame 391 and a connecting shaft 393, the connecting shaft 393 is fixedly connected to the side of the stripping frame 31 away from the piston rod 394, the connecting shaft 393 is fixedly connected with the piston rod 394, the side of the piston rod 394 is slidingly connected with the inner side of the piston cylinder 395, the side of the blowing frame 391 is fixedly connected with the inner side of the 3D printer 2, the side of the blowing frame 391 close to the placement plate 4 is uniformly provided with gas holes 392, the inner side of the blowing frame 391 is fixedly connected with a guide plate 396, the inner side of the guide plate 396 is fixedly connected with the piston cylinder 395, and the side of the piston cylinder 395 is fixedly connected with the inner side of the blowing frame 391; When the handrail 310 is pressed, the handrail 310 drives the stripping block 36 to move downward in the inner side of the base 1 through the stripping frame 31, and the stripping frame 31 drives the piston rod 394 to move downward in the piston cylinder 395 through the connecting shaft 393; After the model is finished, the handrail 310 is lifted upward, which drives the stripping frame 31 to move upward synchronously, and at this time the stripping frame 31 drives the piston rod 394 to move upward through the connecting shaft 393, pushing the gas in the piston cylinder 395 out and spraying it out; Because the inner side of the blowing frame 391 is provided with the guide plate 396, the gas sprayed out of the piston cylinder 395 can be directed to the top of the placement plate 4 through the gas holes 392 on the blowing frame 391 in the direction guided by the guide plate 396, and through this process, the blowing and cleaning of the placement plate 4 are completed, avoiding the model debris remaining on the surface of the placement plate 4 after the model is unloaded.
[0013] Specific working process: Preparation: clear the model training target, obtain the DICOM data of de-identified CT / MRI, select medical flexible TPU (liver / pancreatic parenchyma), photosensitive resin (bile duct / vessel) according to the organization characteristics, and adapt the equipment; Three-dimensional modeling: use software to segment images to extract liver, gallbladder, pancreas, blood vessels and other structures, optimize the model (add support, set hollow channel), and export STL format; Print setting: configure slicing parameters (such as TPU printing speed of FDM, exposure time of SLA) according to equipment type, and calibrate equipment to ensure accuracy; Print execution: load materials to start the 3D printer 2, monitor the first 10 layers and complex structure layers, and timely handle material breakage, air bubbles and other problems; Unloading work: when the model on the placement plate 4 that has completed 3D printing is removed, the disengagement part on both sides of the base 1 is pressed downward, the model is smoothly separated from the placement plate 4 through the linkage of the part, and the unloading work of the model is completed; Post-processing: remove the support and polish, assemble the simulated bleeding function, disinfect and package according to the material properties; Quality verification: compare the images to confirm the dissection accuracy, test the mechanical properties, and verify the training adaptability through the simulated operation of the surgeon.
[0014] When the model on the placement plate 4 that has completed 3D printing is removed, the handrails 310 are pressed downward with both hands, the handrails 310 drive the removal frame 31 to move downward inside the base 1, and then drive the removal blocks 36 to move downward and separate from the placement plate 4; At the same time, the removal frame 31 is pressed during the downward movement, which drives the transmission mechanism 32 to move upward inside the base 1, and the sliding plate 33 drives the moving frame 37 and the moving block 38 to move upward inside the placement plate 4 through the slide rod 34. Since the moving block 38 and the removal block 36 are distributed in a cross manner in the placement plate 4, the upward movement of the moving block 38 and the downward movement of the removal block 36 during the removal process will jointly act on the model on the placement plate 4, realizing the removal of the simulated material. After the removal is completed, the buffer mechanism 35 drives the moving block 38 to automatically reset to the initial position; In addition, the removal frame 31 is also linked to the air blowing mechanism 39 during the downward movement, which blows air on the top of the placement plate 4, thereby removing the model debris remaining after the removal and completing the cleaning of the placement plate 4; When the handrails 310 are pressed, the handrails 310 drive the removal frame 31 to move downward inside the base 1; the removal blocks 36 drive the rack one 323 to move downward during the downward movement, and since the rack one 323 and the gear 322 are meshed with each other, the gear 322 rotates under the drive of the rack one 323, and then drives the rack two 324 to move upward through the meshing relationship; The upward movement of the rack two 324 drives the sliding plate 33 to move upward, and finally the sliding plate 33 drives the moving frame 37 and the moving block 38 to move upward inside the placement plate 4 through the slide rod 34, realizing the convenient separation of the model; When the model on the placement plate 4 is removed, the moving block 38 pulls the connecting spring 352 and the round rod 351 upward when the sliding plate 33 drives the moving frame 37 and the moving block 38 to move upward inside the placement plate 4; After the model removal work is completed, the connecting spring 352 releases the elastic potential energy, drives the moving block 38 and the moving frame 37 to reset, and the moving frame 37 completes the reset movement in the inner space of the removal block 36, preparing for the subsequent 3D printing work; When the handrail 310 is pressed, the handrail 310 drives the stripping block 36 to move downward in the base 1 through the stripping frame 31, and the stripping frame 31 drives the piston rod 394 to move downward in the piston cylinder 395 through the connecting shaft 393; After the model stripping work is completed, the handrail 310 is lifted upward, and the handrail 310 drives the stripping frame 31 to move upward synchronously, at this time, the stripping frame 31 drives the piston rod 394 to move upward through the connecting shaft 393, and the gas in the piston cylinder 395 is pushed out and sprayed out; Since the inside of the air blowing frame 391 is provided with the guide plate 396, the gas sprayed out of the piston cylinder 395 can be directed to blow to the top of the placing plate 4 through the air holes 392 on the air blowing frame 391 in the direction guided by the guide plate 396, and through this process, the air blowing and cleaning of the placing plate 4 are completed, and the model debris remaining on the surface of the placing plate 4 after the model is stripped is avoided.
[0015] Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art and related fields without creative labor should belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.
Claims
1. A 3D printed simulation device for hepatobiliary and pancreatic surgery training, characterized in that, Include: The base (1), the top of the base (1) is fixedly connected with the placement plate (4), the top of the placement plate (4) is fixedly connected with the 3D printer (2); The material removal component (3) is used for material removal work on the 3D printing simulator material on the placement plate (4), and the side of the material removal component (3) is fixedly connected with the inner side of the base (1); The material removal component (3) includes a material removal frame (31), the inner side of the material removal frame (31) is uniformly provided with a sliding rod (34), the bottom of the sliding rod (34) is fixedly connected with a sliding plate (33), the top of the material removal frame (31) is fixedly connected with a material removal block (36), the inner side of the material removal block (36) is slidably connected with a moving frame (37), the top of the moving frame (37) is fixedly connected with a moving block (38), the inner side of the material removal block (36) is fixedly connected with a buffer mechanism (35), both sides of the material removal frame (31) are fixedly connected with a blowing mechanism (39), the inner side of the sliding plate (33) is fixedly connected with a transmission mechanism (32), and the side of the material removal frame (31) away from the blowing mechanism (39) is fixedly connected with a handrail (310).
2. The 3D printed simulation device for hepatobiliary and pancreatic surgery training according to claim 1, characterized in that: The side of the sliding rod (34) is slidably connected with the inner side of the material removal frame (31), the top of the sliding rod (34) is fixedly connected with the bottom of the moving block (38), the side of the sliding plate (33) is slidably connected with the inner side of the base (1), and the side of the handrail (310) is slidably connected with the inner side of the base (1).
3. The 3D printed simulation device for hepatobiliary and pancreatic surgery training according to claim 2, characterized in that: The moving block (38) and the material removal block (36) are sequentially and alternately arranged, the moving block (38) and the material removal block (36) are concentrically arranged with the mesh of the placement plate (4), and the sides of the moving block (38) and the material removal block (36) are slidably connected with the inner side of the placement plate (4).
4. The 3D printed simulation device for hepatobiliary and pancreatic surgery training according to claim 1, characterized in that: The transmission mechanism (32) includes a rotating shaft (321), a rack one (323) and a rack two (324), one end of the rotating shaft (321) is rotatably connected with a gear (322), the top of the rack one (323) is fixedly connected with the bottom of the material removal block (36), and the side of the rack two (324) is fixedly connected with the inner side of the sliding plate (33).
5. The 3D printed simulation device for hepatobiliary and pancreatic surgery training according to claim 4, characterized in that: The sides of the rack one (323) and the rack two (324) are meshingly connected with the inner side of the gear (322), and one end of the rotating shaft (321) away from the gear (322) is fixedly connected with the inner side of the base (1). 6.The 3D printed simulation device for hepatobiliary and pancreatic surgery training of claim 1, wherein: The buffer mechanism (35) includes a round rod (351), the bottom of the round rod (351) is fixedly connected with the top of the moving frame (37), the top of the round rod (351) is slidably connected with the inner side of the material removal block (36), and the round rod (351) is sleeved with a connecting spring (352).
7. The 3D printed simulation device for hepatobiliary and pancreatic surgery training according to claim 6, characterized in that: The top of the connecting spring (352) is fixedly connected with the inner side of the material removal block (36), and the bottom of the connecting spring (352) is fixedly connected with the top of the moving frame (37). 8.The 3D printed simulation device for hepatobiliary and pancreatic surgery training of claim 1, wherein: The blowing mechanism (39) comprises a blowing frame (391) and a connecting shaft (393), one end of the connecting shaft (393) is fixedly connected with a piston rod (394), the side of the blowing frame (391) is fixedly connected with the inner side of the 3D printer (2), the side of the blowing frame (391) close to the placing plate (4) is uniformly provided with air holes (392), the inner side of the blowing frame (391) is fixedly connected with a guide plate (396), and the inner side of the guide plate (396) is fixedly connected with a piston cylinder (395).
9. The 3D printed simulation device for hepatobiliary and pancreatic surgery training according to claim 8, characterized in that: The end of the connecting shaft (393) away from the piston rod (394) is fixedly connected with the side of the material removing frame (31), the side of the piston rod (394) is slidingly connected with the inner side of the piston cylinder (395), and the side of the piston cylinder (395) is fixedly connected with the inner side of the blowing frame (391).