A teaching model for thoracic surgery nursing operation

Abstract

The present invention discloses a thoracic surgery nursing operation teaching model, which relates to the technical field of medical models, including a trunk model, a mounting plate, a puncture rubber plug, a fluid storage bin, a pipe interface, a hose, a syringe, a sealing cover, a sliding plug, a rubber bag, a puncture assembly, and a liquid pushing assembly arranged on the syringe. In the present invention, the liquid pushing assembly drives the sliding plug to slide in the syringe, thereby squeezing the liquid in the syringe to the fluid storage bin, so that the drainage fluid can enter the external drainage tube, and the closed drainage operation of the chest cavity is simulated. When the sliding plug moves to a fixed position, the puncture assembly will penetrate into the rubber bag, so that the marking liquid in the rubber bag flows into the syringe, so that the color of the liquid in the syringe turns red, and then the drainage operation under active bleeding is simulated. In addition, since the drainage fluid with a lighter color in the early stage can be simulated, and the drainage fluid in the late active bleeding can be simulated, the ability of novice medical personnel to deal with emergency situations can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical models, and in particular to a thoracic surgery nursing operation teaching model. Background Art

[0002] Thoracic surgery is a medical specialty that focuses on the study of organs within the chest cavity, primarily the diagnosis and treatment of esophageal, lung, and mediastinal lesions. The field of breast surgery is also included in this specialty, with lung surgery and esophageal surgery being the main focus.

[0003] When thoracic surgery is providing drainage care for pleural effusion, medical staff need to perform different treatments based on the condition of the drainage fluid (mainly color changes, the drainage fluid is usually lighter in color in the early stage, and may be redder in color in the later stage due to active bleeding). However, when teaching drainage care, there is no model for teaching the above situation in the existing technology, which makes it difficult for medical students or novice medical staff to become familiar with the operating steps. As a result, during actual drainage care, medical staff are not proficient in the operation, which affects the effect of care. Summary of the invention

[0004] The purpose of the present invention is to provide a thoracic surgery nursing operation teaching model to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A thoracic surgery nursing operation teaching model, comprising:

[0007] A torso model with a mounting opening on the surface, a mounting plate detachably connected to the mounting opening, a mounting hole on the mounting plate, and a puncture rubber plug installed in the mounting hole;

[0008] A liquid storage bin fixedly connected to the lower surface of the mounting plate, the puncture rubber plug seals the mouth of the liquid storage bin, a pipe interface is provided at the bottom of the liquid storage bin, and a hose is installed at the end of the pipe interface;

[0009] A syringe connected to the end of the hose passing through the torso model, wherein the end of the syringe away from the hose is open and detachably connected to a sealing cap;

[0010] A sliding plug coaxially engaged with the injection barrel, wherein the sliding plug slides freely in the injection barrel;

[0011] A rubber bladder is arranged in the syringe, and a puncture assembly used in conjunction with the rubber bladder is arranged in the syringe;

[0012] A liquid pushing assembly is arranged on the injection barrel, and the liquid pushing assembly is used to drive the sliding plug to move in the injection barrel.

[0013] Furthermore, a filling port is provided on the periphery of the injection barrel, and a stopper is engaged at the mouth of the filling port.

[0014] Furthermore, the puncture assembly includes a short puncture tube that is penetrated through an end face of the syringe away from the sealing cover, and one end of the short puncture tube that passes through the syringe is fixedly connected to a connecting portion, and the connecting portion is detachably connected to the end face of the syringe, and a connecting port is provided at a portion where the short puncture tube penetrates into the syringe.

[0015] Furthermore, the liquid pushing assembly includes a fixed plate, and vertical plates are fixedly connected to both sides of the upper surface of the fixed plate, and a screw rod is connected between the two vertical plates for horizontal rotation. The screw rod is driven to rotate by a motor installed on one of the vertical plates, and a nut sleeve is sleeved on the periphery of the screw rod, and the nut sleeve and the screw rod form a threaded fit, and a connecting seat is fixedly sleeved on the periphery of the nut sleeve, and a connecting frame is fixedly connected to the outer wall of the connecting seat, and the injection cylinder is detachably connected to the top surface of the fixed plate, and a push rod is slidably penetrated by the end surface of the sealing cover, and one end of the push rod that penetrates into the injection cylinder is connected to the end surface of the sliding plug, and the other end of the push rod is connected to the connecting frame.

[0016] Furthermore, a clamping sleeve is fixedly connected to the top surface of the fixing plate, the sealing cover is fixedly engaged in the clamping sleeve, and the sealing cover is threadedly sleeved on the open end of the injection barrel.

[0017] Furthermore, two guide columns are horizontally penetrated between the two vertical plates, and ear blocks are fixedly connected to the periphery of the connecting seat. The ear blocks are provided with guide holes for the guide columns to pass freely.

[0018] Furthermore, the motor is electrically connected to an external speed regulator.

[0019] Furthermore, two sliding rods are slidably penetrated by the end surface of the sliding plug, a limiting nut is sleeved on one end of the sliding rod adjacent to the sealing cover, a connecting ring is fixedly connected to one end of the sliding rod away from the sealing cover, an installation cavity is formed between the connecting ring and the sliding plug, the rubber bag is installed in the installation cavity, a through groove is formed on the end surface of the rubber bag facing the short thorn tube, a puncture silicone is fixedly connected to the mouth of the through groove, and the puncture silicone is used to close the mouth of the through groove and be used in conjunction with the short thorn tube.

[0020] Furthermore, a fixing sleeve is fixedly connected to the bottom wall of the inner cavity of the liquid accumulation bin, and an elastic expansion sleeve is integrally fixedly connected to the upper end of the fixing sleeve, and a deformation seam extending to the periphery of the fixing sleeve is provided at the periphery of the elastic expansion sleeve, a plurality of expansion parts are fixedly connected to the upper end surface of the elastic expansion sleeve, and a protrusion is integrally fixedly connected to the lower end surface of the puncture plug, the outer diameter of the protrusion is smaller than the inner diameter of the liquid accumulation bin, and a plurality of slots for the expansion parts to be inserted are provided on the lower end surface of the protrusion, and the outer diameter of the elastic expansion sleeve decreases successively from top to bottom, and an extrusion sleeve is slidably mounted on the periphery of the elastic expansion sleeve, and a tapered hole is coaxially provided on the end surface of the extrusion sleeve, and the tapered hole is used in conjunction with the elastic expansion sleeve, and an electromagnet is installed on the bottom wall of the inner cavity of the liquid accumulation bin, and the electromagnet and the extrusion sleeve form a magnetic fit, and a spring is provided between the extrusion sleeve and the electromagnet, and the two ends of the spring elastic force direction elastically press against the extrusion sleeve and the electromagnet respectively.

[0021] Furthermore, a rubber ring is sleeved on the periphery of the upper side of the protrusion, and the outer diameter of the rubber ring is adapted to the inner diameter of the liquid storage bin.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the present invention, the liquid pusher assembly drives the sliding plug to slide in the syringe, thereby squeezing the liquid in the syringe into the liquid accumulation chamber, so that the drainage fluid can enter the external drainage tube, thereby simulating the closed chest drainage operation. When the sliding plug moves to a fixed position, the puncture assembly penetrates into the rubber bag, so that the marking liquid in the rubber bag flows into the syringe, and the color of the liquid in the syringe turns red, thereby simulating the drainage operation under active bleeding. In addition, since the drainage fluid with a lighter color in the early stage and the drainage fluid in the late active bleeding can be simulated, the ability of novice medical personnel to deal with emergency situations can be greatly improved;

[0024] 2. In the present invention, the motor drives the screw rod to rotate, and the nut sleeve drives the connecting seat to move, and then the connecting seat drives the push rod to move, and the push rod pushes the sliding plug to move in the syringe, and then squeezes the liquid in the syringe into the liquid storage tank. In addition, the motor is set to adjust its speed by the speed regulator, so as to simulate the active bleeding drainage operation under different bleeding rates;

[0025] 3. In the present invention, magnetism is generated by energizing the electromagnet, and a magnetic attraction force is generated on the extrusion sleeve, so that the extrusion sleeve moves downward, and the extrusion of the outer wall of the elastic expansion sleeve by the inner wall of the tapered hole of the extrusion sleeve disappears, thereby causing the elastic expansion sleeve to deform elastically and expand. This will cause the expansion portion to generate an expansion force on the protrusion toward the outside of the fluid accumulation bin, and the gap between the portion where the external drainage tube penetrates the protrusion and the inner wall of the protrusion will increase, causing the liquid in the fluid accumulation bin to seep out of the gap, thereby simulating the seepage phenomenon at the puncture site of the drainage tube during the drainage operation, so that medical personnel can perform simulation training. In addition, the electromagnet can be energized at regular or irregular intervals to train the medical personnel's emergency response capabilities and proficiency in nursing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a thoracic surgery nursing operation teaching model in the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of the positional relationship after the middle part of the structure is cut open;

[0028] Figure 3 It is a schematic diagram of the positional relationship of the mounting plate, the puncture plug and the liquid storage bin after assembly in the present invention;

[0029] Figure 4 for Figure 3 Schematic diagram of structural explosion decomposition;

[0030] Figure 5 for Figure 3 Schematic diagram of the positional relationship after the middle part of the structure is cut open;

[0031] Figure 6 for Figure 5 A magnified schematic diagram of the local structure at point A;

[0032] Figure 7 It is a schematic diagram of the positional relationship of the syringe barrel, the sealing cover and the push rod after being assembled in the present invention;

[0033] Figure 8 for Figure 7 Schematic diagram of the positional relationship after the middle part of the structure is cut open;

[0034] Fig. 9 for Figure 8 A magnified schematic diagram of the local structure at B in the middle;

[0035] Fig.10 for Figure 7 The schematic diagram of the position relationship after the syringe is omitted;

[0036] Fig.11 for Fig.10 Schematic diagram of the exploded decomposition of the structure.

[0037] In the figure, the description of each figure mark is as follows: 1. mounting plate; 2. puncture plug; 3. torso model; 4. hose; 5. syringe; 6. guide column; 7. screw rod; 8. fixing plate; 9. motor; 10. connecting frame; 11. push rod; 12. liquid storage bin; 13. plug; 14. nut sleeve; 15. connecting seat; 16. clamping sleeve; 17. protrusion; 18. rubber ring; 19. extrusion sleeve; 20. tapered hole; 21. expansion part; 22. elastic expansion sleeve; 23. fixing sleeve; 24. deformation joint; 25. spring; 26. electromagnet; 27. pipe interface; 28. slot; 29. ​​sealing cover; 30. connecting part; 31. sliding rod; 32. rubber bag; 33. connecting ring; 34. puncture silicone; 35. sliding plug; 36. short thorn tube; 37. connecting port; 38. limit nut. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1 - Fig.11 The present invention provides a technical solution: a thoracic surgery nursing operation teaching model, comprising a trunk model 3 with a mounting opening on the surface, the trunk model 3 is hollow inside, and the whole can be made of rubber material, a mounting plate 1 is connected to the mounting opening by screws, the mounting plate 1 is provided with a mounting hole, a puncture plug 2 is installed in the mounting hole, the puncture plug 2 is used for an external drainage tube to penetrate, and a puncture position mark is provided on the surface of the puncture plug 2, so that medical personnel can accurately penetrate the drainage tube into the puncture plug 2, a hollow liquid storage bin 12 with an open top is fixedly connected to the lower surface of the mounting plate 1, the puncture plug 2 closes the mouth of the liquid storage bin 12, and a pipe interface 27 (such as Figure 5 As shown in FIG. 1 ), a hose 4 is installed at the end of the tube interface 27, and a through-hole for the hose 4 to pass through is provided in the trunk model 3. The hose 4 passes through the through-hole and passes through one end of the trunk model 3 and is connected to a syringe 5. The syringe 5 (as shown in FIG. 1 ) Figure 7 The end of the syringe 5 away from the hose 4 is open and threadedly sleeved with a sealing cap 29. A filling port is arranged at the periphery of the syringe 5. A plug 13 is engaged with the mouth of the filling port. The plug 13 is opened, and a liquid used to simulate the early drainage fluid is injected into the syringe 5 from the filling port using an external filling device, and then the plug 13 is inserted into the filling port.

[0040] A fixed plate 8 is placed below the injection barrel 5, and vertical plates are fixedly connected to both sides of the upper surface of the fixed plate 8. A screw rod 7 is connected between the two vertical plates for horizontal rotation through bearings. The screw rod 7 is driven to rotate by a motor 9 installed on one of the vertical plates. The motor 9 is electrically connected to an external speed regulator, and the external speed regulator can adjust the speed of the motor 9. A nut sleeve 14 is sleeved on the periphery of the screw rod 7. The nut sleeve 14 and the screw rod 7 form a threaded fit. A connecting seat 15 is fixedly sleeved on the periphery of the nut sleeve 14, and a connecting frame 10 is fixedly connected to the outer wall of the connecting seat 15. A clamping sleeve 16 is fixedly connected to the top surface of the fixed plate 8, and a sealing cover 29 is fixedly clamped in the clamping sleeve 16. The sealing cover 29 is threadedly sleeved on the open end of the injection barrel 5, so that the injection barrel 5 can be detachably connected to the top surface of the fixed plate 8. A sliding plug 35 (such as Figure 8 As shown), the sliding plug 35 slides freely in the syringe 5, and the end surface of the sealing cover 29 is slidably penetrated with a push rod 11, one end of the push rod 11 that penetrates into the syringe 5 is connected to the end surface of the sliding plug 35, and the other end of the push rod 11 is connected to the connecting frame 10. When the motor shaft of the motor 9 rotates, the screw rod 7 is driven to rotate, so that the nut sleeve 14 and the screw rod 7 are threadedly screwed together, thereby driving the connecting seat 15 to move, so that the connecting seat 15 drives the push rod 11 to move, and the push rod 11 pushes the sliding plug 35 to move in the syringe 5, thereby squeezing the liquid in the syringe 5 into the liquid storage bin 12. Two guide columns 6 are horizontally penetrated between the two vertical plates, and the peripheral edge of the connecting seat 15 is fixed with an ear block, and the ear block is provided with a guide hole for the guide column 6 to pass freely. The guide column 6 guides the movement of the connecting seat 15, so that the connecting seat 15 will not produce a deflection along the circumferential direction of the screw rod 7;

[0041] The end surface of the sliding plug 35 is slidably penetrated by two sliding rods 31, and one end of the sliding rod 31 adjacent to the sealing cover 29 is sleeved with a limiting nut 38 (such as Fig.11 As shown, the end of the sliding rod 31 away from the sealing cover 29 is fixedly connected with a connecting ring 33, and the connecting ring 33 and the sliding plug 35 form a mounting cavity, and the rubber bag 32 is installed in the mounting cavity. Fig. 9A short thorn tube 36 is penetrated on the end face of the side away from the sealing cover 29, and a through groove is opened on the end face of the rubber bag 32 facing the short thorn tube 36. A puncture silicone 34 is fixedly connected to the mouth of the through groove. The puncture silicone 34 is used to close the mouth of the through groove. A liquid injection port (not shown in the figure) is arranged on the surface of the rubber bag 32, and a one-way valve is installed on the liquid injection port. Red marking liquid can be injected into the rubber bag 32 through the one-way valve, and the one-way valve can prevent the marking liquid from overflowing. The puncture silicone 34 and the rubber bag 32 can be vulcanized by a mold. After the puncture silicone 34 is punctured, the hole formed by the puncture can be automatically closed. The end of the short thorn tube 36 passing through the injection barrel 5 is fixedly connected to the connecting part 30, and the connecting part 30 can be detachably connected to the end face of the injection barrel 5. A connecting port 37 is opened at the position where the short thorn tube 36 penetrates into the injection barrel 5. The puncture silicone 34 is used in conjunction with the short thorn tube 36. When the sliding plug 35 is moved toward the short thorn When the tube 36 moves in the direction of the needle, when it moves to a fixed position, the short thorn tube 36 will penetrate the puncture silicone 34, so that the red marking liquid in the rubber bag 32 can enter the tube mouth of the short thorn tube 36, and then flow out from the connecting port 37 to the syringe 5, so that the color of the liquid in the syringe 5 turns red or the red color deepens to simulate active bleeding. When assembling the rubber bag 32, first loosen the syringe 5 from the sealing cover 29, and then pull the connecting ring 33 away from the sliding plug 35, so that an installation cavity is formed between the connecting ring 33 and the sliding plug 35, and then put the rubber bag 32 filled with the marking liquid into the installation cavity. At this time, due to the expansion of the volume of the rubber bag 32, and the limiting nut 38 on the sliding rod 31, the distance between the connecting ring 33 and the sliding plug 35 can be fixed, and then the syringe 5 is tightened on the sealing cover 29, and then the liquid is filled into the syringe 5;

[0042] A fixing sleeve 23 is fixedly connected to the bottom wall of the inner cavity of the liquid storage bin 12, and an elastic expansion sleeve 22 is fixedly connected to the upper end of the fixing sleeve 23 in an integral manner. A deformation seam 24 extending to the periphery of the fixing sleeve 23 is provided at the periphery of the elastic expansion sleeve 22, and a plurality of expansion portions 21 are fixedly connected to the upper end surface of the elastic expansion sleeve 22. A protrusion 17 is fixedly connected to the lower end surface of the puncture rubber plug 2 in an integral manner. The outer diameter of the protrusion 17 is smaller than the inner diameter of the liquid storage bin 12, and a plurality of slots 28 (such as the slots 28 for inserting the expansion portions 21) are provided at the lower end surface of the protrusion 17. Figure 8As shown in the figure, the outer diameter of the elastic expansion sleeve 22 decreases from top to bottom, and the periphery of the elastic expansion sleeve 22 is slidably covered with an extrusion sleeve 19, and the end face of the extrusion sleeve 19 is coaxially provided with a tapered hole 20, and the tapered hole 20 is used in conjunction with the elastic expansion sleeve 22. An electromagnet 26 is installed on the bottom wall of the inner cavity of the liquid accumulation bin 12, and the electromagnet 26 and the extrusion sleeve 19 form a magnetic force match. A spring 25 is arranged between the extrusion sleeve 19 and the electromagnet 26, and the two ends of the spring 25 in the elastic force direction elastically press against the extrusion sleeve 19 and the electromagnet 26, respectively, and the liquid accumulation The outer wall of the bin 12 is provided with a threading hole for the power cord of the power supply magnet 26 to pass through, so that the electromagnet 26 can be electrically connected to an external power source. A rubber ring 18 is mounted on the upper periphery of the protrusion 17. The outer diameter of the rubber ring 18 is adapted to the inner diameter of the liquid storage bin 12, so that the rubber ring 18 can seal the gap between the inner wall of the liquid storage bin 12 and the outer wall of the protrusion 17, thereby preventing the liquid in the liquid storage bin 12 from leaking out from the abutting surface of the mounting plate 1 and the torso model 3 and the gap between the puncture plug 2 and the mounting port.

[0043] Working principle of the present invention:

[0044] Inserting the drainage tube: disinfect the side of the puncture plug 2 that is exposed to the torso model 3 to simulate the disinfection operation before puncture, and then insert the external drainage tube into the puncture plug 2 until the drainage tube extends into the bottom of the fluid storage bin 12, and the puncture plug 2 and the protrusion 17 form a puncture hole for the drainage tube to be inserted. At the same time, the electromagnet 26 is in a power-off state, and the spring 25 will extend, so that the extrusion sleeve 19 moves upward and the hole wall of the tapered hole 20 generates an extrusion force along the radial inner side of the elastic expansion sleeve 22 on the outer wall of the elastic expansion sleeve 22, thereby causing the elastic expansion sleeve 22 to elastically contract, so that after the drainage tube is pulled out, the puncture hole will automatically close;

[0045] Early drainage simulation: adjust the speed regulator to make the motor shaft of the motor 9 rotate at a corresponding speed, thereby driving the screw 7 to rotate, so that the nut sleeve 14 is screwed with the screw 7, and then the connecting seat 15 can be driven to move, so that the connecting seat 15 drives the push rod 11 to move, and the push rod 11 pushes the sliding plug 35 to move in the syringe 5, thereby squeezing the liquid in the syringe 5 into the liquid storage bin 12. At the same time, the external negative pressure device generates negative pressure in the liquid storage bin 12 through the drainage tube, so that the liquid in the liquid storage bin 12 will be discharged by the drainage tube, thereby realizing the early drainage operation simulation;

[0046] Active bleeding drainage simulation: As the sliding plug 35 continues to slide, the end face of the connecting ring 33 will abut against the inner wall of the syringe 5, so that the short thorn tube 36 penetrates the puncture silicone 34, so that the red marking liquid in the rubber bag 32 can enter the tube mouth of the short thorn tube 36, and then flow out from the connecting port 37 into the syringe 5, so that the color of the liquid in the syringe 5 turns red or the red color deepens, so as to simulate active bleeding, and as the sliding plug 35 moves, the volume of the rubber bag 32 shrinks, and the marking liquid flows out of the rubber bag 32, so as to simulate active bleeding drainage. At this stage, the speed regulator can be adjusted arbitrarily to change the speed of the motor 9 accordingly, so as to simulate the active bleeding drainage operation with different bleeding rates;

[0047] Exudate simulation: During drainage, the electromagnet 26 can be powered on at any stage, so that the electromagnet 26 is energized to generate magnetism and generate magnetic attraction to the extrusion sleeve 19, so that the extrusion sleeve 19 moves downward, and the extrusion of the inner wall of the tapered hole 20 of the extrusion sleeve 19 on the outer wall of the elastic expansion sleeve 22 disappears, thereby causing the elastic expansion sleeve 22 to elastically expand and deform, which will cause the expansion portion 21 to exert an expansion force on the protrusion 17 toward the outside of the fluid accumulation chamber 12, and the gap between the part where the external drainage tube penetrates the protrusion 17 and the inner wall of the protrusion 17 (i.e., the aperture of the puncture hole) will increase, so that the liquid in the fluid accumulation chamber 12 seeps out of the gap, thereby simulating the exudate phenomenon at the puncture site of the drainage tube during the drainage operation, so that medical personnel can conduct simulation training.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thoracic surgery nursing operation teaching model, characterized in that: include: A torso model with a mounting opening on the surface, a mounting plate detachably connected to the mounting opening, a mounting hole on the mounting plate, and a puncture rubber plug installed in the mounting hole; A liquid storage bin fixedly connected to the lower surface of the mounting plate, the puncture rubber plug seals the mouth of the liquid storage bin, a pipe interface is provided at the bottom of the liquid storage bin, and a hose is installed at the end of the pipe interface; A syringe connected to the end of the hose passing through the torso model, wherein the end of the syringe away from the hose is open and detachably connected to a sealing cap; A sliding plug coaxially engaged with the injection barrel, wherein the sliding plug slides freely in the injection barrel; A rubber sac is arranged in the syringe, wherein the rubber sac is provided with a red marking liquid for simulating active bleeding, and the syringe is provided with a puncture assembly used in conjunction with the rubber sac; A liquid pushing assembly provided on the syringe, wherein a motor of the liquid pushing assembly drives the sliding plug to move in the syringe; The bottom wall of the inner cavity of the liquid accumulation bin is fixedly connected with a fixing sleeve, the upper end of the fixing sleeve is integrally fixedly connected with an elastic expansion sleeve, the periphery of the elastic expansion sleeve is provided with a deformation seam extending to the periphery of the fixing sleeve, the upper end surface of the elastic expansion sleeve is fixedly connected with a plurality of expansion parts, the lower end surface of the puncture plug is integrally fixedly connected with a protrusion, the outer diameter of the protrusion is smaller than the inner diameter of the liquid accumulation bin, the lower end surface of the protrusion is provided with a plurality of slots for the expansion parts to be inserted, the outer diameter of the elastic expansion sleeve decreases successively from top to bottom, the periphery of the elastic expansion sleeve is slidably covered with an extrusion sleeve, the end surface of the extrusion sleeve is coaxially provided with a tapered hole, the tapered hole is used in conjunction with the elastic expansion sleeve, the bottom wall of the inner cavity of the liquid accumulation bin is installed with an electromagnet, the electromagnet and the extrusion sleeve form a magnetic fit, a spring is provided between the extrusion sleeve and the electromagnet, and the two ends of the spring elastic force direction elastically press against the extrusion sleeve and the electromagnet respectively.

2. The thoracic surgery nursing operation teaching model according to claim 1 is characterized in that: A filling port is arranged on the periphery of the injection barrel, and a cock is engaged with the mouth of the filling port.

3. The thoracic surgery nursing operation teaching model according to claim 1 is characterized in that: The puncture assembly includes a short puncture tube that is penetrated through the end surface of the syringe away from the sealing cover. The end of the short puncture tube that passes through the syringe is fixedly connected to a connecting part, and the connecting part is detachably connected to the end surface of the syringe. A connecting port is provided at the position where the short puncture tube penetrates into the syringe.

4. The thoracic surgery nursing operation teaching model according to claim 3 is characterized in that: The liquid pushing assembly includes a fixed plate, and vertical plates are fixedly connected to both sides of the upper surface of the fixed plate. A screw rod is connected between the two vertical plates for horizontal rotation. The screw rod is driven to rotate by a motor installed on one of the vertical plates. A nut sleeve is sleeved on the periphery of the screw rod, and the nut sleeve and the screw rod form a threaded fit. A connecting seat is fixedly sleeved on the periphery of the nut sleeve, and a connecting frame is fixedly connected to the outer wall of the connecting seat. The injection cylinder is detachably connected to the top surface of the fixed plate, and a push rod is slidably penetrated by the end surface of the sealing cover, and one end of the push rod that penetrates into the injection cylinder is connected to the end surface of the sliding plug, and the other end of the push rod is connected to the connecting frame.

5. The thoracic surgery nursing operation teaching model according to claim 4 is characterized in that: A clamping sleeve is fixedly connected to the top surface of the fixing plate, the sealing cover is fixedly clamped in the clamping sleeve, and the sealing cover is threadedly sleeved on the open end of the injection barrel.

6. The thoracic surgery nursing operation teaching model according to claim 4 is characterized in that: Two guide columns are horizontally penetrated between the two vertical plates. An ear block is fixedly connected to the periphery of the connecting seat. The ear block is provided with a guide hole for the guide column to freely pass through.

7. The thoracic surgery nursing operation teaching model according to claim 4 is characterized in that: The motor is electrically connected to an external speed regulator.

8. The thoracic surgery nursing operation teaching model according to claim 4 is characterized in that: Two sliding rods are slidably penetrated on the end surface of the sliding plug, a limiting nut is sleeved on one end of the sliding rod adjacent to the sealing cover, a connecting ring is fixedly connected to one end of the sliding rod away from the sealing cover, an installation cavity is formed between the connecting ring and the sliding plug, the rubber bag is installed in the installation cavity, a through groove is formed on the end surface of the rubber bag on one side facing the short thorn tube, a puncture silicone is fixedly connected to the mouth of the through groove, and the puncture silicone is used to close the mouth of the through groove and be used in conjunction with the short thorn tube.

9. The thoracic surgery nursing operation teaching model according to claim 1 is characterized in that: A rubber ring is sleeved on the upper peripheral edge of the protrusion, and the outer diameter of the rubber ring is matched with the inner diameter of the liquid storage bin.

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