Surgical bleeding training model device based on 3D printing technology

Abstract

The present invention relates to a bleeding model (2), and discloses a surgical bleeding training model device based on 3D printing technology, comprising a 3D printed organ model (1), wherein the bleeding model (2) is arranged at the organ model (1), and further comprising a liquid circulation system and a liquid control module; the liquid circulation system comprises a liquid storage bag (3) and a connecting pipe (4), the liquid circulation system is connected to the bleeding model (2) and is used to transport the liquid in the liquid storage bag (3) to the bleeding model (2) via the connecting pipe (4); the liquid control module is arranged at the connecting pipe (4) and is used to control the liquid flow rate and flow rate in the connecting pipe (4). The present invention overcomes the shortcomings of low simulation and insufficient flexibility of existing surgical training models by introducing 3D printing technology, a precise liquid circulation system and a control module, and provides a highly realistic, flexible and adjustable surgical bleeding training model, providing surgeons with a more realistic and effective training tool.

Description

Technical Field

[0001] The invention relates to a bleeding model, and in particular to a surgical bleeding training model device based on 3D printing technology. Background Art

[0002] In digestive surgery training, simulating the surgical environment and operating procedures is crucial to the surgeon's technical improvement. Similarly, simulating the accidents and complications that may occur during surgery is also a necessary step for the surgeon's growth. Bleeding in the surgical area is a difficult hurdle that most surgeons cannot avoid. When faced with heavy bleeding, young doctors often find it difficult to quickly stop the bleeding due to nervousness, or seek help from senior doctors, thus losing the opportunity to improve their surgical skills. If surgical training models can be used to simulate bleeding scenes in surgical operations, it is expected to make up for this shortcoming. It does not require direct hemostasis training on patients, so there is no safety risk. It can also build specific surgical models as needed to simulate complex bleeding scenes for repeated practice.

[0003] Traditional surgical training methods include the use of animal models (live and cadaveric), virtual reality simulations, and various physical models. These methods can simulate surgical scenarios to a certain extent, but they are significantly inadequate in reproducing real bleeding situations.

[0004] Animal models are widely used in surgical training because they can provide a certain degree of physical feedback and physiological responses. However, animal models have significant limitations, such as obvious differences in physiological and anatomical structures from humans, certain ethical issues and biosafety risks in animal surgical experimental training, high training costs due to the construction of additional venues for animal experiments and perioperative management of animals, and some difficult-to-control experimental conditions. When simulating bleeding, firstly, ex vivo organs cannot simulate bleeding scenarios, and secondly, the amount and mode of bleeding in live animal models cannot be precisely controlled and have good training repeatability due to their own possible anatomical variations and individual differences in feeding, resulting in unsatisfactory training results.

[0005] Virtual reality (VR) technology has been widely used in the field of medical training in recent years. VR simulation can create realistic surgical scenes and allow surgeons to operate in a virtual environment. However, VR technology lacks physical touch and real physical feedback, especially when simulating bleeding. The flow and reaction of virtual blood cannot truly reproduce the complex situations in actual surgery. In addition, the supporting equipment required for VR training is expensive. Currently, it is only carried out in a small number of large tertiary hospitals, making it difficult to carry out training on a larger scale. In general, although VR simulation is helpful for training, it still cannot completely replace the role of physical models.

[0006] Traditional physical models are usually made of plastic, rubber or silicone materials to simulate the structure of human organs. This type of dry lab model can be used repeatedly and has certain cost-effectiveness. However, this type of model has great limitations in simulating bleeding: the liquid circulation system in the model is usually simple, and it is difficult to simulate different types of bleeding (such as arteries and veins and blood vessels of different thicknesses) and changes in flow rate. In addition, traditional physical models are far less detailed and realistic than actual operation requirements. For example, due to the limitations of the material itself, it is impossible to simulate the state of the original blood vessels and the bleeding scene, and thus it is impossible to simulate the role of hemostatic devices such as electric devices in surgical bleeding scenes, resulting in doctors still having difficulty in obtaining sufficient training experience and experience when facing complex bleeding situations. Summary of the invention

[0007] The present invention aims at the problems existing in the bleeding training model in the prior art and provides a surgical bleeding training model device based on 3D printing technology.

[0008] In order to solve the above technical problems, the present invention is solved by the following technical solutions: A surgical bleeding training model device based on 3D printing technology includes a 3D printed organ model, a bleeding model is arranged at the organ model, and also includes a liquid circulation system and a liquid control module; The liquid circulation system includes a liquid storage bag and a connecting pipe, and the liquid circulation system is connected to the bleeding model and is used to transport the liquid in the liquid storage bag to the bleeding model through the connecting pipe; The liquid control module is arranged at the connecting pipeline and is used to control the flow rate and flow velocity of the liquid in the connecting pipeline.

[0009] Preferably, the liquid control module includes an infusion pump, the liquid outlet of the infusion pump is connected to the bleeding model, the bleeding model includes at least one blood outlet, one end of the liquid storage bag is connected to the end of the blood outlet away from the infusion pump, and the other end is connected to the liquid inlet of the infusion pump, and the liquid control module also includes a drip bucket and a flow regulating valve arranged on the connecting pipeline between the liquid storage bag and the infusion pump. The setting of the infusion pump, drip bucket and flow regulating valve can accurately simulate the bleeding situation in different surgical scenarios, including the adjustment of flow rate, pressure and bleeding type, so that the bleeding simulation is closer to the situation in actual surgery.

[0010] As an advantage, a sphygmomanometer is also included, and the sphygmomanometer includes a sphygmomanometer hose connected to the liquid inlet of the infusion pump. The sphygmomanometer can measure the real-time pressure in the blood vessels, which is equivalent to highly simulating the pressure of human blood vessels.

[0011] Preferably, an infusion pump inlet pipe and an infusion pump outlet pipe are respectively provided at the inlet and outlet of the infusion pump, and a liquid storage bag inlet pipe and a liquid storage bag outlet pipe are respectively provided at the inlet and outlet of the liquid storage bag, and the liquid storage bag outlet pipe, the infusion pump inlet pipe and the sphygmomanometer hose are connected by a first three-way pipe joint.

[0012] Preferably, the bleeding model also includes a reserved blood outlet blood vessel arranged at the organ model, and a second three-way pipe joint is connected to the outlet tube of the infusion pump, one of the joint ports of the second three-way pipe joint is connected to the blood outlet blood vessel, and the other joint port serves as a first reserved joint port and is provided with a first blocking member.

[0013] Preferably, the liquid inlet pipe of the liquid storage bag includes a main pipeline and two branch pipelines connected by a third three-way pipe joint, wherein the end of one of the branch pipelines away from the third three-way pipe joint is connected to a fourth three-way pipe joint, one of the joint ports of the fourth three-way pipe joint is connected to the blood outlet blood vessel, the other joint port is connected to a fifth three-way pipe joint, one of the joint ports of the fifth three-way pipe joint is connected to another branch pipeline, and the other joint port serves as a second reserved joint port and is provided with a second blocking member.

[0014] The first reserved joint port and the second reserved joint port are provided so that different pipeline connections can be selected according to actual needs, so as to facilitate the connection of the liquid circulation system with different bleeding modules and realize diversified simulation of bleeding.

[0015] Preferably, a recovery device for recovering the simulated blood flowing out of the bleeding point of the bleeding model is also included, the organ model is arranged in the recovery device, the recovery device includes a placement table for placing the organ model and an annular recovery tank arranged at the bottom of the placement table and capable of collecting the simulated blood flowing out of the bleeding blood vessel, and a recovery port is provided at the recovery tank. The recovery port can be connected to the infusion pump again through a connecting pipe, and the setting of the recovery device can realize the recovery and reuse of the simulated blood flowing out of the bleeding point.

[0016] Preferably, the upper end surface of the placement table is configured as a placement plane for placing the organ model, and the side surface is configured as a downwardly inclined guiding slope, and the lower end of the guiding slope is provided with an annular protrusion with an L-shaped cross section, and the annular protrusion and the lower end of the guiding slope together form a recovery groove. The cooperation of the placement plane and the guiding slope can achieve stable placement of the organ model and guide the simulated blood flowing out of the bleeding model so that it can flow into the recovery groove to achieve blood recycling.

[0017] Preferably, the placement table includes at least two placement table components, and adjacent placement table components can be spliced ​​with each other to form a placement table as a whole after splicing, and a seal is provided at the splicing between adjacent placement table components. The placement table is designed to be spliced ​​with multiple placement table components, so that placement tables of different sizes can be set as needed to adapt to different organ models and bleeding models.

[0018] Preferably, the placement table is also provided with a waterproof plastic-coated cloth that can cover the placement plane and extend both ends into the recovery tank. The provision of the waterproof plastic-coated cloth can prevent the simulated blood from flowing into the joint gap to a certain extent, thereby preventing the gap from leaking or being difficult to clean.

[0019] Preferably, a filter screen mounting frame is provided on the annular protrusion, the filter screen mounting frame has an L-shaped cross section and includes a vertical connection portion clamped on the upper end surface of the annular protrusion from top to bottom and a horizontal mounting portion horizontally arranged in the recovery tank, and a filter screen is installed on the horizontal mounting portion. The setting of the filter screen can filter particulate impurities in the simulated blood, ensuring that the recovered simulated blood can be better reused.

[0020] The present invention has significant technical effects due to the adoption of the above technical solution: The present invention overcomes the shortcomings of low simulation and insufficient flexibility of existing surgical training models by introducing 3D printing technology, a precise liquid circulation system and a control module, and provides a highly realistic, flexible and adjustable surgical bleeding training model, providing surgeons with a more realistic and effective training tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a working principle diagram of embodiment 1 of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the recovery device in Example 2 of the present invention.

[0023] Figure 3 yes Figure 1 Schematic diagram of the structure of the placement table.

[0024] Figure 4 yes Figure 3 A magnified view of part A.

[0025] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle component, Figure 6 yes Figure 5 Enlarged view of part A.

[0026] Figure 7 yes Figure 5 Enlarged view of part B. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Example 1 Surgical bleeding training model device based on 3D printing technology, such as Figure 1As shown, it includes a 3D printed organ model 1, a bleeding model 2 is arranged at the organ model 1, and also includes a liquid circulation system and a liquid control module; The liquid circulation system includes a liquid storage bag 3 and a connecting pipe 4. The liquid circulation system is connected to the bleeding model 2 and is used to transport the liquid in the liquid storage bag 3 to the bleeding model 2 via the connecting pipe 4. The liquid control module is disposed at the connecting pipe 4 and is used to control the liquid flow rate and flow velocity in the connecting pipe 4 .

[0029] Among them, the liquid control module includes an infusion pump 5, the liquid outlet of the infusion pump 5 is connected to the bleeding model 2, the bleeding model 2 includes at least one blood outlet blood vessel 201, one end of the liquid storage bag 3 is connected to the end of the blood outlet blood vessel 201 away from the infusion pump 5, and the other end is connected to the liquid inlet of the infusion pump 5, and the liquid control module also includes a drip bucket 6 and a flow regulating valve 7 arranged on the connecting pipeline between the liquid storage bag 3 and the infusion pump 5.

[0030] In this embodiment, 3D printing technology is used to produce highly simulated blood vessel models of different sizes, thicknesses, and courses based on hydrogel and silicone materials, making them as close to real human organs as possible in texture and structural details, while being able to provide electrochemical reactions that are closer to actual surgical scenarios when dealing with hemostasis.

[0031] The introduction of advanced liquid circulation system can accurately simulate the bleeding conditions in different surgical scenarios, including the adjustment of flow rate, pressure and bleeding type, making the bleeding simulation closer to the actual situation in surgery.

[0032] In addition, according to different training needs, the shape and internal structure of the model can be flexibly customized to cooperate with different surgical training scenarios to meet the needs of specific surgical scenarios. Some blood vessels have side openings to simulate bleeding states; simulated blood vessels with different diameters, combined with the liquid circulation system, can simulate venous and arterial blood flow rate and pressure.

[0033] In this embodiment, the various components are connected by pipe joints, and the organ model 1, the bleeding model 2, the liquid circulation system and the liquid control module are modularly designed, which can improve the flexibility and durability of the model. Some recyclable components can help reduce maintenance costs and allow for rapid replacement or adjustment of model parts under different training needs to achieve bleeding and hemostasis training in specific surgical training scenarios.

[0034] This embodiment also includes a sphygmomanometer 8 , which includes a sphygmomanometer hose 801 connected to the liquid inlet of the infusion pump 5 .

[0035] Among them, the infusion pump 5 is provided with an infusion pump inlet pipe 501 and an infusion pump outlet pipe 502 at the inlet and outlet of the infusion pump 5, respectively, and the liquid storage bag 3 is provided with a liquid storage bag inlet pipe 301 and a liquid storage bag outlet pipe 302 at the inlet and outlet of the liquid storage bag 3, respectively, and the liquid storage bag outlet pipe 302, the infusion pump inlet pipe 501 and the sphygmomanometer hose 801 are connected through the first three-way pipe 401 joint. The sphygmomanometer 8 can measure the real-time pressure in the blood vessels, which is equivalent to highly simulating the pressure of human blood vessels.

[0036] The bleeding model 2 in this embodiment also includes a reserved blood outlet blood vessel 202 arranged at the organ model 1, and a second three-way pipe joint 402 is connected to the infusion pump outlet pipe 502, one of the joint ports of the second three-way pipe joint 402 is connected to the blood outlet blood vessel 201, and the other joint port serves as a first reserved joint port 403 and is provided with a first blocking member.

[0037] The bleeding model 2 is modularly designed so that it can be provided with multiple blood vessels on the organ model 1 to play different roles. It is also provided with a reserved blood vessel 202 as a backup, which can be replaced according to the needs of surgical training, including an arterial bleeding module, a venous bleeding module, etc. These modules are connected to the liquid circulation system through an interface to achieve simulation of different types of bleeding.

[0038] The liquid storage bag liquid inlet pipe 301 includes a main pipeline 405 and two branch pipelines 407 connected by a third three-way pipe joint 406, wherein the end of one branch pipeline 407 away from the third three-way pipe joint 406 is connected to a fourth three-way pipe joint 408, one of the joint ports of the fourth three-way pipe joint 408 is connected to the blood outlet blood 201, and the other joint port is connected to a fifth three-way pipe joint 409, one of the joint ports of the fifth three-way pipe joint 409 is connected to the other branch pipeline 407, and the other joint port serves as a second reserved joint port 410 and is provided with a second blocking member.

[0039] The first blocking member and the second blocking member are not shown in the figure, and conventional in-pipe sealing plugs may be used for blocking.

[0040] Joints are also reserved on the circulation pipeline, which can realize the selection of different pipeline connections according to actual needs, so as to facilitate the connection of the liquid circulation system with different bleeding modules and realize diversified simulation of bleeding.

[0041] The connecting pipes and pipe joints used in this embodiment all adopt standardized interfaces to facilitate quick replacement and installation.

[0042] Example 2 Same as Example 1, Figure 2-Figure 6 As shown, the difference is that this embodiment also includes a recovery device 9 for recovering the simulated blood flowing out of the bleeding point of the bleeding model 2, and the organ model 1 is arranged in the recovery device 9.

[0043] The recovery device 9 includes a placement table 901 for placing the organ model 1 and an annular recovery trough 902 arranged at the lower part of the placement table 901 and capable of collecting the simulated blood flowing out of the blood vessel 201. The recovery trough 902 is provided with a recovery port 913, and the recovery port 913 can be connected to a recovery tube, and a sealing plug can also be added.

[0044] Among them, the upper end surface of the placement table 901 is configured as a placement plane 903 for placing the organ model 1, and the side surface is configured as a downwardly inclined guide slope 904, and the lower end of the guide slope 904 is provided with an annular protrusion 905 with an L-shaped cross-section, and the annular protrusion 905 and the lower end of the guide slope 904 together constitute a recovery groove 902.

[0045] The setting of the recovery device 9 can realize that when a large amount of liquid flows out from the periphery of the module when simulating blood vessel damage, the liquid can be concentrated and refluxed to the recovery tank 902 at the lower center, and connected to the connecting pipe 4 through the recovery port 913 on the recovery tank 902, so that it can flow to the recovery pump again to realize liquid recovery.

[0046] Taking into account the need to simulate bleeding scenes of different degrees, it is necessary to design a recovery device 9 that can match it, so that its placement table 901 can place different organ models 1 and bleeding models 2. Therefore, the placement table 901 is also modularly designed so that different numbers of placement table components 906 can be selected as needed, and then placement tables 901 of different sizes can be spliced ​​together to be suitable for different bleeding models 2.

[0047] Specifically, the placement table 901 in this embodiment includes at least two placement table components 906. Adjacent placement table components 906 can be spliced ​​together to form the placement table 901 as a whole. A seal 907 is provided at the joint between adjacent placement table components 906. According to actual needs, a recovery port 913 can be set at each placement table component 906.

[0048] Specifically, the placement table assembly 906 includes two end assemblies 914 and at least one middle assembly 915. When in use, the two end assemblies 914 can be directly spliced ​​together, or one or more middle assemblies 915 can be set between the two end assemblies 914 for splicing to form placement tables 901 of different sizes, which are suitable for different organ models 1 and bleeding models 2.

[0049] The end component 914 includes a top surface and three guiding slopes 904, one of which constitutes the end surface of the placement table 901 in the width direction, and the other two guiding slopes 904 are arranged opposite to each other, respectively constituting a part of the end surface of the placement table 901 in the length direction; the middle component 915 includes a top surface and two oppositely arranged guiding slopes 904 constituting a part of the end surface of the placement table 901 in the length direction; the end component 914 and the middle component 915 are spliced ​​together by means of a T-shaped clamping groove and a clamping block which are arranged on the connecting end surface of the guiding slope 904 and extend the opening to the top surface, and the adjacent placement table components 906 are plugged in from top to bottom.

[0050] The top surfaces of the end component 914 and the middle component 915 can be integrally formed with the guide slope 904, or can be overlapped on the guide slope 904 from top to bottom. It is only necessary to set a overlap plate on the inner side surface of the guide slope 904 to keep the top surface flush with the upper end surface of the guide slope 904.

[0051] Since the placement table 901 is spliced, the size of the placement table 901 can be changed, and it can be disassembled and cleaned afterwards, and it can also be conveniently stored and transported during transportation.

[0052] However, there may be gaps at the joints of the spliced ​​placement platform 901 , especially the gaps in the recovery tank 902 may have liquid seepage, so a seal 907 is provided at the gaps in the recovery tank 902 .

[0053] The annular protrusion 905 includes a bottom plate 916 and a side plate 917 corresponding to the guide bevel 904. The seal 907 is arranged at the splicing end of the bottom plate 916. The splicing end of the bottom plate 916 is provided with a sealing half groove 918 for installing the seal 907. The sealing half grooves 918 of adjacent bottom plates 916 together form a square groove. The seal 907 includes two rubber blocks 919. The total width of the two rubber blocks 919 is slightly larger than the width of the direction groove. Therefore, after the two rubber blocks 919 are inserted into the square groove, they can jointly seal the connection of the square groove.

[0054] In this embodiment, a filter mounting frame 909 is provided on the annular protrusion 905. The filter mounting frame 909 has an L-shaped cross-section and includes a vertical connecting portion 910 that is clamped on the upper end surface of the annular protrusion 905 from top to bottom and a horizontal mounting portion 911 that is horizontally arranged in the recovery groove 902. A filter screen 912 is installed on the horizontal mounting portion 911. An open groove 920 with an opening downward is provided on the lower end of the vertical connecting portion 910 for clamping on the side plate 917 of the annular protrusion 905.

[0055] The setting of the filter 912 can filter the particulate impurities in the simulated blood, ensuring that the recovered simulated blood can be better reused. In order to facilitate cleaning, the filter can also be designed to be detachably connected to the filter mounting frame. The rubber block 919 can be connected to the bottom surface of the horizontal mounting portion 911. When the filter mounting frame 909 is installed downward, the rubber block 919 can be simultaneously inserted into the square groove, and the rubber block 919 is squeezed in the height direction, so that it has a better sealing effect.

[0056] In addition, in order to prevent the simulated blood from seeping out of the joint seam on the top of the placement table 901, a waterproof plastic-coated cloth 908 is provided on the placement table 901, which can cover the placement plane 903 and extend both ends into the recovery groove 902. The width of the waterproof plastic-coated cloth 908 remains unchanged so that it can be applied to the placement surface and the side surfaces along the length direction of the placement table 901. When in use, the length of the waterproof plastic-coated cloth 908 can be freely cut according to the length of the placement table 901.

[0057] A row of limiting holes 921 are provided on the end of the waterproof plastic-coated cloth 908 extending to the recovery groove 902, and a limiting column 922 is arranged on the upper end surface of the horizontal mounting portion 911, so that the end of the waterproof plastic-coated cloth 908 can be hung on the limiting column 922 through the limiting holes 921 to ensure the position and tension of the waterproof plastic-coated cloth 908.

[0058] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0059] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A surgical bleeding training model device based on 3D printing technology, comprising a 3D printed organ model (1), characterized in that: The organ model (1) is provided with a bleeding model (2), which also includes a liquid circulation system and a liquid control module; The liquid circulation system comprises a liquid storage bag (3) and a connecting pipe (4), the liquid circulation system is connected to the bleeding model (2) and is used to transport the liquid in the liquid storage bag (3) to the bleeding model (2) via the connecting pipe (4); The liquid control module is arranged at the connecting pipe (4) and is used to control the flow rate and flow velocity of the liquid in the connecting pipe (4).

2. The surgical bleeding training model device based on 3D printing technology according to claim 1 is characterized by: The liquid control module comprises an infusion pump (5), wherein the liquid outlet of the infusion pump (5) is connected to the bleeding model (2), the bleeding model (2) comprises at least one blood outlet blood vessel (201), one end of the liquid storage bag (3) is connected to the end of the blood outlet blood vessel (201) away from the infusion pump (5), and the other end is connected to the liquid inlet of the infusion pump (5), and the liquid control module further comprises a drip bucket (6) and a flow regulating valve (7) arranged on the connecting pipeline between the liquid storage bag (3) and the infusion pump (5).

3. The surgical bleeding training model device based on 3D printing technology according to claim 2 is characterized by: It also includes a sphygmomanometer (8), which includes a sphygmomanometer hose (801) connected to the liquid inlet of the infusion pump (5).

4. The surgical bleeding training model device based on 3D printing technology according to claim 3 is characterized by: An infusion pump inlet pipe (501) and an infusion pump outlet pipe (502) are respectively provided at the inlet and outlet of the infusion pump (5); a storage bag inlet pipe (301) and a storage bag outlet pipe (302) are respectively provided at the inlet and outlet of the storage bag (3); the storage bag outlet pipe (302), the infusion pump inlet pipe (501) and the sphygmomanometer hose (801) are connected via a first three-way pipe (401) joint.

5. The surgical bleeding training model device based on 3D printing technology according to claim 4 is characterized in that: The bleeding model (2) further comprises a reserved blood outlet blood vessel (202) arranged at the organ model (1); a second three-way pipe joint (402) is connected to the infusion pump outlet pipe (502); one of the joint ports of the second three-way pipe joint (402) is connected to the blood outlet blood vessel (201); the other joint port serves as a first reserved joint port (403) and is provided with a first blocking member.

6. The surgical bleeding training model device based on 3D printing technology according to claim 5 is characterized by: The liquid storage bag liquid inlet pipe (301) comprises a main pipeline (405) and two branch pipelines (407) connected via a third three-way pipe joint (406), wherein an end of one of the branch pipelines (407) away from the third three-way pipe joint (406) is connected to a fourth three-way pipe joint (408), one of the joint ports of the fourth three-way pipe joint (408) is connected to the blood outlet blood vessel (201), and the other joint port is connected to a fifth three-way pipe joint (409), one of the joint ports of the fifth three-way pipe joint (409) is connected to another branch pipeline (407), and the other joint port serves as a second reserved joint port (410) and is provided with a second blocking member.

7. The surgical bleeding training model device based on 3D printing technology according to claim 5, characterized in that: The invention also comprises a recovery device (9) for recovering simulated blood flowing out of a bleeding point of the bleeding model (2). The organ model (1) is arranged in the recovery device (9). The recovery device (9) comprises a placement table (901) for placing the organ model (1) and an annular recovery groove (902) arranged at the bottom of the placement table (901) and capable of collecting simulated blood flowing out of the bleeding blood vessel (201). The recovery groove (902) is provided with a recovery port (913). The upper end surface of the placement table (901) is configured as a placement plane (903) for placing the organ model (1), and the side surface is configured as a downwardly inclined guide slope (904). The lower end of the guide slope (904) is provided with an annular protrusion (905) with an L-shaped cross section. The annular protrusion (905) and the lower end of the guide slope (904) together constitute the recovery groove (902).

8. The surgical bleeding training model device based on 3D printing technology according to claim 7, characterized in that: The placement table (901) comprises at least two placement table components (906); adjacent placement table components (906) can be spliced ​​together to form the placement table (901) as a whole after splicing; and a sealing member (907) is provided at the splicing position between adjacent placement table components (906).

9. The surgical bleeding training model device based on 3D printing technology according to claim 8, characterized in that: The placement table (901) is also provided with a waterproof plastic-coated cloth (908) that can cover the placement plane (903) and has both ends extending into the recovery tank (902).

10. The surgical bleeding training model device based on 3D printing technology according to claim 8, characterized in that: A filter screen mounting frame (909) is provided on the annular protrusion (905); the filter screen mounting frame (909) has an L-shaped cross section and comprises a vertical connection portion (910) clamped from top to bottom on the upper end surface of the annular protrusion (905) and a horizontal mounting portion (911) horizontally arranged in the recovery tank (902); a filter screen (912) is mounted on the horizontal mounting portion (911).

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