Vein simulation injection auxiliary equipment shell based on medical nursing teaching

Abstract

The invention discloses a vein simulation injection auxiliary equipment shell based on medical nursing teaching, which comprises an auxiliary equipment shell, the top of the auxiliary equipment shell is provided with a shell I, the top of the shell I is provided with a shell II, and the top of the shell I and the right side of the shell II are provided with graduated scales. Two sets of arm supports are installed at the top of the first shell, a circular groove is formed in the top surface of the first shell, a needle inserting assembly is installed at the center of the first shell and used for assisting a student in needle inserting, and an angle switching assembly is installed at the top of the needle inserting assembly and the right side of the circular groove. According to the invention, a student can form muscle memory, can know the real-time angle between the existing injector and the prosthesis in real time, deepen the impression, improve the proficiency of acupuncture and the control ability of the angle, and do not need to frequently replace the whole prosthesis and blood vessel, so that the waste of time and resources is reduced, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a housing for an intravenous injection simulation auxiliary device based on medical and nursing teaching. Background Technology

[0002] Currently, intravenous infusion therapy is limited to simple puncture and medication administration as prescribed. Our nurses lack knowledge in various aspects. Therefore, to improve the quality of intravenous infusion therapy care, standardize intravenous infusion techniques, ensure successful venipuncture, alleviate patient suffering, and reduce intravenous infusion complications, we are adopting virtual simulation teaching methods for medical and nursing intravenous infusion training. Students can repeatedly practice, continuously strengthen their skills, accumulate practical experience, and lay a foundation for clinical nursing operations. Virtual training encourages students to flexibly apply their knowledge, guides them to master standardized operating skills, and cultivates their observation, analysis, and hands-on abilities. The introduction of virtual simulation experiments for intravenous infusion injects technological vitality into nursing training, guides students to learn actively, monitor their learning progress, and realistically reflect their learning situation. Through repeated practice, a solid foundation for clinical nursing operations is laid.

[0003] When conducting simulation training for existing nursing trainees, such as the injection method (where the needle bevel faces upwards at a 15°-30° angle to the skin, inserted into the vein from above or to the side, then advanced along the vein before finally injecting), some new trainees often struggle with the angle of needle insertion and the angle of pressure after insertion, relying mainly on intuition. This is not difficult for nurses with practical experience, but for new trainees without any practical experience, learning is slowed down before developing muscle memory. Each practice session, while mastering disinfection skills and textbook knowledge, leaves them with weak proficiency in needle insertion and angle control, resulting in low simulation training effectiveness. Nurses are often nervous when they first start their internship in the infusion room, especially when giving injections to patients for the first time. This can cause swelling in the patient's hand, increasing the physical and psychological burden on the patient and reducing the trainee's confidence in administering injections.

[0004] Meanwhile, most existing simulation teaching aids only use a single blood vessel or a single simulated prosthesis. This means that after one student practices needle insertion, there is a high chance that the needle will not be inserted correctly because the previous student learned by figuring it out and trying it on their own. In addition to leaving many needle holes, the simulated blood vessel will also be riddled with holes. The next student will be affected by the needle holes left by the previous student or the paint overflowing from the simulated blood vessel. If the entire prosthesis and blood vessel are frequently replaced, it will not only waste time, but also increase the cost. Summary of the Invention

[0005] In view of the above-mentioned problems existing in the prior art, the problem to be solved by the present invention is: the problem of passing through.

[0006] To solve the aforementioned technical problems, the present invention adopts the following technical solution: a housing for an intravenous simulated injection auxiliary device based on medical nursing teaching, comprising an auxiliary device housing, a housing first mounted on the top of the auxiliary device housing, a housing second mounted on the top of the housing first, a scale provided on the top of the housing first and the right side of the housing second, two sets of arm supports mounted on the top of the housing first, a circular groove provided on the top surface of the housing first, and a needle insertion assembly mounted at the center of the housing first, the needle insertion assembly being used to assist trainees in needle insertion;

[0007] An angle switching component is installed on the top of the needle insertion component and on the right side of the circular groove. The angle switching component is used to switch the angle of the syringe.

[0008] A prosthesis switching assembly is installed on the top of the housing and on the left side of the circular groove. The prosthesis switching assembly is used to switch the position of the simulation assembly.

[0009] A simulation component is installed on the bottom inner wall of a housing, and the simulation component is used for a bionic prosthesis.

[0010] Preferably, the needle assembly includes a rotating base, which is mounted on the top of the housing via an elastic telescopic rod. A rotating shaft is installed on the inner wall of the rotating base, and a fixed seat is installed at the top center of the rotating shaft. A Velcro fastener is provided at the top of the fixed seat. A bearing is provided on the right side of the middle of the rotating shaft, and a torsion spring is installed on the right end of the rotating shaft and the right side of the fixed seat.

[0011] Preferably, the bottom of the fixing base is equipped with two sets of thin elastic double telescopic rods, and the bottom of the two sets of thin elastic double telescopic rods is equipped with a bottom ring. A rack is installed on one side of the thin elastic double telescopic rod on the left, and a rack is installed on one side of the thin elastic double telescopic rod on the right. When the bottom ring is extended to the bottom, the syringe is inserted into the bionic blood vessel.

[0012] Preferably, the angle switching component includes a side seat 1, which is installed on the top of the housing 1 and the right side of the circular groove. A gear sleeve 1 is rotatably installed at the end of the side seat 1. A pulley assembly 1 is provided on the right side of the gear. A gear 1 is installed on one side of the end of the pulley assembly 1. A gear 2 is meshed with the bottom of the gear 1. A gear 3 is meshed with the front end of the gear 2. A gear sleeve 2 is installed on the left end of the gear 3. A gear 4 is meshed with the back end of the gear sleeve 2. A rack 3 is meshed with the back of the gear 4.

[0013] Preferably, the pulley assembly one and the gear sleeve are connected and installed on the right half of the rotating shaft where the bearing is installed, the gear three and the gear sleeve two are rotatably installed on the inner side of the rotating seat, the gear four is installed on the left half of the rotating shaft where the bearing is installed, the bottom end of the rack three is installed on the top of the housing one, and the rack two is meshed with the top of the gear.

[0014] Preferably, the prosthesis switching assembly includes a second side seat, which is installed on the top of the housing and the left side of the circular groove. A third gear sleeve is installed on the right end of the second side seat, and a fifth gear is meshed with the bottom of the third gear sleeve. A second pulley set is installed on the right end of the fifth gear, and a third pulley set is installed on the right end of the second pulley set. A helical gear set is installed on the right side of the third pulley set, and a sixth gear is installed at the bottom of the helical gear set.

[0015] Preferably, the fifth gear, the second pulley group, the third pulley group, and the helical gear group are connected to the top of the housing. The inner walls of the first, second, and third gear sleeves are all equipped with ratchet assemblies, and the ratchet assemblies inside the first and third gear sleeves are installed in opposite directions. The first rack is meshed with the top of the third gear sleeve, and the position of the first rack is located at the lower left of the second rack.

[0016] Preferably, the simulation component includes a toothed ring disposed on an inner wall of the housing. A storage bladder is installed on the inner side of the toothed ring, and a bionic blood vessel is installed at the end of the storage bladder. A transparent silicone is fitted onto the inner wall of the toothed ring, and a fixing plate is installed on the top and bottom of the transparent silicone. A rotating rod is provided at the bottom end of the fixing plate.

[0017] Preferably, the toothed ring is rotatably connected to the inner wall of the housing via a rotating rod at the bottom of the fixed plate, and the number of the storage bladders and bionic blood vessels is set to several groups, with the several groups of storage bladders and bionic blood vessels installed in a circular and proportional manner inside the transparent silicone.

[0018] Preferably, the storage bladder contains pigment, the storage bladder is elastic, the housing is threadedly connected to the auxiliary equipment housing, and the simulation component is detachably connected to the inner wall of the housing.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] 1. By combining the needle insertion component and the angle switching component, the device assists the trainee in inserting the syringe at a 15-degree angle during injection, and then precisely lowering it by 5 degrees to reach the injection position. This simulates the 15-degree insertion and 5-degree downward pressing operation in actual practice. With long-term practice, trainees can develop muscle memory and understand the real-time angle between the syringe and the prosthesis, deepening their impression and improving their proficiency in needle insertion and angle control. This enhances trainees' confidence during injection and allows them to practice more skillfully in the future.

[0021] 2. By setting up a prosthesis switching component and a simulation component, the simulation component combines multiple simulated blood vessels with a single simulated prosthesis. Through the linkage between the prosthesis switching component and the needle insertion component, the position of the simulation component is automatically switched after the needle insertion component withdraws the needle. This avoids the next trainee being affected by the needle holes left by the previous trainee or the paint overflowing from the simulated blood vessels. It also eliminates the need to frequently replace the entire prosthesis and blood vessels, reducing the waste of time and resources and lowering costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the auxiliary equipment housing;

[0023] Figure 2 This is a schematic diagram of the internal structure of the auxiliary equipment housing;

[0024] Figure 3 This is a structural diagram of the needle insertion assembly, angle switching assembly, prosthesis switching assembly, and simulation assembly.

[0025] Figure 4 A schematic diagram of the needle insertion assembly and the angle switching assembly;

[0026] Figure 5 This is a schematic diagram of the structure of the fixed base;

[0027] Figure 6 This is a schematic diagram of the rotating base;

[0028] Figure 7 This is a schematic diagram of the prosthesis switching component structure;

[0029] Figure 8 This is a schematic diagram of the housing structure of the simulation components and auxiliary equipment;

[0030] Figure 9 This is a schematic diagram of the simulation component structure.

[0031] Figure 10 This is a schematic diagram of the structure of side seat one and gear sleeve one.

[0032] In the diagram, 1. Auxiliary equipment housing; 10. Housing 1; 11. Housing 2; 12. Scale; 13. Arm support; 14. Circular groove; 2. Needle assembly; 20. Rotary seat; 21. Rotating shaft; 22. Fixed seat; 23. Velcro; 24. Bearing; 25. Torsion spring; 26. Thin elastic double telescopic rod; 27. Bottom ring; 28. Rack 1; 29. ​​Rack 2; 200. Elastic telescopic rod; 3. Angle switching assembly; 30. Side seat 1; 31. Pulley assembly 1; 32. 33. Gear 1; 34. Gear 2; 35. Gear 3; 36. Gear 2; 37. Gear 4; 38. Rack 3; 4. Prosthesis switching assembly; 40. Side seat 2; 401. Gear 3; 42. Gear 5; 43. Pulley group 2; 44. Pulley group 3; 45. Helical gear group; 46. Gear 6; 5. Simulation component; 50. Gear ring; 51. Storage bladder; 52. Bionic blood vessel; 53. Transparent silicone; 54. Fixing plate; 55. Rotating rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] See Figures 1-10 A housing for an intravenous injection simulation auxiliary device based on medical nursing teaching includes: auxiliary device housing 1; housing one 10; housing two 11; scale 12; arm support 13; circular groove 14; needle insertion assembly 2; rotating seat 20; rotating shaft 21; fixed seat 22; Velcro 23; bearing 24; torsion spring 25; thin elastic double telescopic rod 26; bottom ring 27; rack one 28; rack two 29; elastic telescopic rod 200; angle switching assembly 3; and side seat one 3. 0; Pulley assembly 1 31; Gear sleeve 1 32; Gear 1 33; Gear 2 34; Gear 3 35; Gear sleeve 2 36; Gear 4 37; Rack 3 38; Prosthesis switching assembly 4; Side seat 2 40; Gear sleeve 3 401; Gear 5 42; Pulley assembly 2 43; Pulley assembly 3 44; Helical gear assembly 45; Gear 6 46; Simulation component 5; Gear ring 50; Storage bladder 51; Bionic blood vessel 52; Transparent silicone 53; Fixing plate 54; Rotating rod 55.

[0035] Example 1:

[0036] The auxiliary equipment housing 1 has a housing 10 mounted on top, a housing 2 11 mounted on top of housing 10, a scale 12 on the top of housing 10 and the right side of housing 2 11, two sets of arm supports 13 mounted on the top of housing 10, a circular groove 14 on the top surface of housing 10, and a needle insertion assembly 2 mounted at the center of housing 10. The needle insertion assembly 2 is used to assist the trainee in needle insertion. An angle switching assembly 3 is mounted on the top of the needle insertion assembly 2 and on the right side of the circular groove 14. The angle switching assembly 3 is used to switch the angle of the syringe. Component 2 includes a rotating base 20, which is mounted on the top of housing 10 via an elastic telescopic rod 200. A rotating shaft 21 is mounted on the inner wall of the rotating base 20. A fixed seat 22 is mounted at the top center of the rotating shaft 21. A Velcro strap 23 is provided at the top of the fixed seat 22. A bearing 24 is located on the right side of the middle of the rotating shaft 21. A torsion spring 25 is mounted on the right end of the rotating shaft 21 and the right side of the fixed seat 22. Two sets of thin elastic double telescopic rods 26 are mounted at the bottom of the fixed seat 22. A bottom ring 27 is mounted at the bottom of the two sets of thin elastic double telescopic rods 26. The thin elastic double telescopic rod 26 on the left... A rack 28 is mounted on the side, and a rack 29 is mounted on one side of the thin, elastic double telescopic rod 26 on the right. When the bottom ring 27 is extended to its lowest point, the syringe is inserted into the bionic blood vessel 52. The angle switching component 3 includes a side seat 30, which is mounted on the top of the housing 10 and the right side of the circular groove 14. A gear sleeve 32 is rotatably mounted on the end of the side seat 30. A pulley assembly 31 is provided on the right side of the gear 32. A gear 33 is mounted on one side of the end of the pulley assembly 31. A gear 34 is meshed with the bottom of the gear 33. The front end is meshed with a gear 35, the left end of the gear 35 is fitted with a gear sleeve 36, the back end of the gear sleeve 36 is meshed with a gear 4 37, the back of the gear 4 37 is meshed with a rack 38, the pulley group 1 31 and the gear 1 33 are sleeved and installed on the right half of the rotating shaft 21 where the bearing 24 is installed, the gear 35 and the gear sleeve 2 36 are rotatably installed inside the rotating seat 20, the gear 4 37 is installed on the left half of the rotating shaft 21 where the bearing 24 is installed, the bottom end of the rack 3 38 is installed on the top of the housing 1 10, and the rack 2 29 is meshed with the top of the gear 32;

[0037] In real-time use, this embodiment assists the trainee in inserting the syringe at a 15-degree angle and then precisely lowering it by 5 degrees to reach the stealth position, simulating the actual operation of entering at a 15-degree angle and pressing down 5 degrees to perform the stealth maneuver.

[0038] Example 2:

[0039] The prosthesis switching assembly 4 is installed on the top of the housing 10 and the left side of the circular groove 14. The prosthesis switching assembly 4 is used to switch the position of the simulation assembly 5. The simulation assembly 5 is installed on the bottom inner wall of the housing 10. The simulation assembly 5 is used for a bionic prosthesis. The prosthesis switching assembly 4 includes a side seat 2 40, which is installed on the top of the housing 10 and the left side of the circular groove 14. A gear sleeve 3 401 is installed on the right end of the side seat 2 40. The bottom of the gear sleeve 3 401 is meshed with a gear 5 42. A pulley group 2 43 is installed on the right end of the gear group 2 43. A pulley group 3 44 is installed on the right end of the pulley group 2 43. A helical gear group 45 is installed on the right side of the pulley group 3 44. A gear 6 46 is installed at the bottom of the helical gear group 45. The gear 5 42, pulley group 2 43, pulley group 3 44 and helical gear group 45 are connected to the top of the housing 10, the inner walls of the gear sleeve 1 32, gear sleeve 2 36 and gear sleeve 3 401. All are equipped with ratchet assemblies, and the ratchet assemblies inside the gear sleeve 32 and gear sleeve 401 are installed in opposite directions. The rack 28 is meshed with the top of the gear sleeve 401. The rack 28 is positioned to the lower left of the rack 29. The end of the storage bladder 51 is equipped with a bionic blood vessel 52. The inner wall of the toothed ring 50 is fitted with a transparent silicone 53. The top and bottom of the transparent silicone 53 are equipped with a fixing plate 54. The bottom of the fixing plate 54 is equipped with a rotating rod 55. The toothed ring 50 is rotatably connected to the inner wall of the housing 10 through the rotating rod 55 at the bottom of the fixing plate 54. The number of storage bladders 51 and bionic blood vessels 52 is set to several groups. Several groups of storage bladders 51 and bionic blood vessels 52 are installed in a circular and proportional manner inside the transparent silicone 53. The storage bladder 51 stores pigment and has elasticity. The housing 10 is threadedly connected to the auxiliary equipment housing 1. The simulation component 5 is detachably connected to the inner wall of the housing 10.

[0040] In this embodiment, unused parts are displayed in the circular slot 14 for the next student to practice on, or for the second training session of the same student, avoiding the need to replace the entire prosthesis and blood vessels, thus reducing the waste of time and costs.

[0041] Working principle: First, the trainee rests their arm on the armrest 13 and places the prepared syringe on top of the fixing base 22. The initial position of the fixing base 22 is 15 degrees. Then, the bottom end of the syringe is inserted downwards into the alignment ring 27, and the Velcro 23 is used to fix the syringe. After the preparation is complete, the trainee continues to press down on the syringe shell and the bottom ring 27, slowly inserting the needle downwards into the transparent silicone 53 (subcutaneous insertion). At the same time, the thin elastic double telescopic rod 26 begins to extend, driving the rack 29 and rack 1 28 to move downwards. When rack 29 passes the bottom of the gear sleeve 32, it engages with gear sleeve 32, causing gear sleeve 32 to rotate. (Because gear sleeve 32 and gear sleeve 3 401 are...) Since the installation directions are opposite, when the gear sleeve 3 401 passes the bottom of the rack 1 28 and engages, the gear sleeve 3 401 will not be driven by the rack 1 28. Subsequently, the rack 2 29 drives the gear sleeve 1 32 to rotate, the gear sleeve 1 32 drives the pulley group 1 31 to rotate, and the pulley group 1 31 drives the gear 1 33 to rotate. At this time, the gear 1 33 drives the right half of the rotating shaft 21 to rotate and store force on the torsion spring 25 (the fixed seat 22 remains stationary). At the same time, when the gear 1 33 drives the bottom gear 2 34 and gear 3 35 to rotate, it will also drive the gear sleeve 2 36 to rotate. However, since the gear sleeve 2 36 can only be driven in one direction, it will not drive the gear 4 37 to rotate at this time. When the syringe needle is exactly at 1 When the bionic blood vessel 52 is inserted at a 5-degree angle, the thin elastic double telescopic rod 26 is fully extended. (Due to the elasticity of the storage bladder 51, and the student's pulling of the syringe, the bionic blood vessel 52 and the pigment inside it return to the syringe. Observe the blood return for the student's judgment.) At this time, the second rack 29 just disengages from the first gear sleeve 32. The second rack 29 no longer provides resistance to the first gear sleeve 32. After the first gear sleeve 32 is released, the torsion spring 25 is no longer stored and begins to release its elasticity. The released elasticity of the torsion spring 25 then drives the right half of the rotating shaft 21 in the opposite direction, and drives the first gear 33 to rotate in the opposite direction. Then, the first gear 33 drives the second gear 34 in the opposite direction, and the second gear 34 drives the second gear sleeve 3 in the opposite direction. 6. At this time, the second gear sleeve 36 can be driven, so the second gear sleeve 36 will drive the fourth gear 37 to rotate. The fourth gear 37 starts to rotate counterclockwise on the third gear rack 38, driving the fixed seat 22 to move downward a certain distance, just enough to drive the needle to press down 5 degrees in the bionic blood vessel 52 (at the same time, press the elastic telescopic rod 200, the elastic force of the elastic telescopic rod 200 is less than the elastic force of the torsion spring 25). After pressing down 5 degrees, the angle between the needle and the bionic blood vessel 52 is exactly 5 degrees, reaching the angle of infiltration, completing the assisted 15-degree entry, pressing down 5 degrees to perform the infiltration operation. At this time, the trainee's hand is always on the syringe to feel the change of angle and form muscle memory for this conventional injection method.

[0042] After the syringe completes the 15-degree insertion into the bionic blood vessel 52 and automatically depresses down 5 degrees, the trainee withdraws the syringe. At this point, the trainee opens the Velcro 23 and removes the syringe from the mounting base 22. (After the syringe is removed, the syringe needle is no longer fixed to the transparent silicone 53; the elastic telescopic rod 200 then extends the mounting base 22 upwards to the initial 15-degree position.) Simultaneously, the thin elastic double telescopic rod 26 begins to contract due to its own elasticity, causing rack 1 28 to retract. When rack 1 28 reaches the top of drive sleeve 3 401 and engages with it, it can drive sleeve 3 401 to rotate, while the opposite rack 2 29 will not rotate at this time. When the moving gear sleeve 1 32 rotates, the gear sleeve 3 401 starts to drive the gear 5 42 to rotate. The gear 5 42 drives the pulley group 2 43 to rotate, the pulley group 2 43 drives the pulley group 3 44 to rotate, the pulley group 3 44 drives the helical gear group 45 to rotate, and the helical gear group 45 drives the gear 6 46 to rotate. Since the helical gear group 45 is meshed with the gear ring 50, the gear ring 50 is driven to rotate at a certain angle, causing the bionic blood vessel 52 and transparent silicone 53 to rotate away the parts that have just been used, and presenting the unused parts of the bionic blood vessel 52 and transparent silicone 53 in the circular groove 14 for the next student to practice, or for the second training of the same student.

[0043] When it is necessary to replace the new bionic blood vessel 52 and transparent silicone 53, since the top of the rotating rod 55 of the fixed plate 54 is inserted, the housing 10, which is threadedly connected to the auxiliary equipment housing 1, is disassembled. Then, the bottom fixed plate 54 of the old bionic blood vessel 52 and transparent silicone 53 is separated from the inserted rotating rod 55, the new bionic blood vessel 52 and transparent silicone 53 are inserted, and the housing 10 is reinstalled. At the same time, during injection, the trainee can also refer to the scale 12 on the right side of the fixed seat 22 to observe and feel the impact of the angle change on the feel, and understand the current angle between the syringe and the bionic blood vessel 52 and transparent silicone 53 in real time, thus deepening the impression.

[0044] Contents not described in detail in this specification are prior art known to those skilled in the art. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate orientations or positional relationships based on the accompanying drawings, and are used only for ease of description and simplification, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A housing for an intravenous injection simulation auxiliary device based on medical nursing teaching, comprising an auxiliary device housing (1), characterized in that: The auxiliary equipment housing (1) is equipped with a housing one (10) on top, and a housing two (11) is equipped with a housing two on top of the housing one (10). A scale (12) is provided on the top of the housing one (10) and the right side of the housing two (11). Two sets of arm supports (13) are installed on the top of the housing one (10). A circular groove (14) is opened on the top surface of the housing one (10). A needle insertion assembly (2) is installed at the center of the housing one (10). The needle insertion assembly (2) is used to assist the trainee in inserting needles. Angle switching component (3) is installed on the top of the needle insertion component (2) and on the right side of the circular groove (14). The angle switching component (3) is used to switch the angle of the syringe. The prosthesis switching assembly (4) is installed on the top of the housing (10) and on the left side of the circular groove (14). The prosthesis switching assembly (4) is used to switch the position of the simulation assembly (5). Simulation component (5) is installed on the bottom inner wall of housing 1 (10) and is used for bionic prosthesis.

2. The housing of an intravenous injection simulation auxiliary device based on medical nursing teaching according to claim 1, characterized in that: The needle insertion assembly (2) includes a rotating base (20). The rotating base (20) is mounted on the top of the housing (10) via an elastic telescopic rod (200). A rotating shaft (21) is installed on the inner wall of the rotating base (20). A fixed seat (22) is installed at the top center of the rotating shaft (21). A Velcro strap (23) is provided at the top of the fixed seat (22). A bearing (24) is provided on the right side of the middle part of the rotating shaft (21). A torsion spring (25) is installed on the right end of the rotating shaft (21) and the right side of the fixed seat (22).

3. The housing of an intravenous injection simulation auxiliary device based on medical nursing teaching according to claim 2, characterized in that: Two sets of thin elastic double telescopic rods (26) are installed at the bottom of the fixed base (22). A bottom ring (27) is installed at the bottom of the two sets of thin elastic double telescopic rods (26). A rack one (28) is installed on one side of the thin elastic double telescopic rod (26) on the left, and a rack two (29) is installed on one side of the thin elastic double telescopic rod (26) on the right. When the bottom ring (27) is extended to the bottom, the syringe is inserted into the bionic blood vessel (52).

4. The housing of an intravenous injection simulation auxiliary device based on medical nursing teaching according to claim 3, characterized in that: The angle switching component (3) includes a side seat (30), which is installed on the top of the housing (10) and the right side of the circular groove (14). A gear sleeve (32) is rotatably installed at the end of the side seat (30). A pulley group (31) is provided on the right side of the gear (32). A gear (33) is installed on one side of the end of the pulley group (31). A gear (34) is meshed with the bottom of the gear (33). A gear (35) is meshed with the front end of the gear (34). A gear sleeve (36) is installed on the left end of the gear (35). A gear (37) is meshed with the back end of the gear sleeve (36). A rack (38) is meshed with the back of the gear (37).

5. The housing of an intravenous injection simulation auxiliary device based on medical nursing teaching according to claim 4, characterized in that: The pulley assembly 1 (31) and gear 1 (33) are sleeved and installed on the right half of the rotating shaft (21) where the bearing (24) is installed. The gear 3 (35) and gear sleeve 2 (36) are rotatably installed on the inside of the rotating seat (20). The gear 4 (37) is installed on the left half of the rotating shaft (21) where the bearing (24) is installed. The bottom end of the rack 3 (38) is installed on the top of the housing 1 (10). The rack 2 (29) is meshed with the top of the gear (32).

6. The housing of an intravenous injection simulation auxiliary device based on medical nursing teaching according to claim 5, characterized in that: The prosthesis switching assembly (4) includes a second side seat (40), which is installed on the top of the housing (10) and the left side of the circular groove (14). A third gear sleeve (401) is installed on the right end of the second side seat (40), and a fifth gear (42) is meshed with the bottom of the third gear sleeve (401). A second pulley group (43) is installed on the right end of the fifth gear (42), a third pulley group (44) is installed on the right end of the second pulley group (43), a helical gear group (45) is installed on the right side of the third pulley group (44), and a sixth gear (46) is installed at the bottom of the helical gear group (45).

7. The housing of an intravenous injection simulation auxiliary device based on medical nursing teaching according to claim 6, characterized in that: The gear five (42), pulley group two (43), pulley group three (44) and helical gear group (45) are connected to the top of the housing one (10). The inner walls of the gear sleeve one (32), gear sleeve two (36) and gear sleeve three (401) are all equipped with ratchet assemblies, and the ratchet assemblies inside the gear sleeve one (32) and gear sleeve three (401) are installed in opposite directions. The outer surfaces of the gear sleeve one (32), gear sleeve two (36) and gear sleeve three (401) are all fitted with gears. The rack one (28) is meshed with the top of the gear sleeve three (401). The rack one (28) is located to the lower left of the rack two (29).

8. The housing of an intravenous injection simulation auxiliary device based on medical nursing teaching according to claim 7, characterized in that: The simulation component (5) includes a toothed ring (50), which is disposed on the inner wall of the housing (10). A storage bladder (51) is installed on the inner side of the toothed ring (50), and a bionic blood vessel (52) is installed at the end of the storage bladder (51). A transparent silicone (53) is sleeved on the inner wall of the toothed ring (50). A fixing plate (54) is installed on the top and bottom of the transparent silicone (53), and a rotating rod (55) is provided at the bottom end of the fixing plate (54).

9. The housing of an intravenous injection simulation auxiliary device based on medical nursing teaching according to claim 8, characterized in that: The toothed ring (50) is rotatably connected to the inner wall of the housing (10) via the rotating rod (55) at the bottom of the fixed plate (54). The number of the storage bladder (51) and the bionic blood vessel (52) is set to several groups. Several groups of storage bladders (51) and bionic blood vessels (52) are installed in a circular manner and proportionally inside the transparent silicone (53).

10. The housing of an intravenous injection simulation auxiliary device based on medical nursing teaching according to claim 9, characterized in that: The storage bladder (51) stores pigment and is elastic. The housing (10) is threadedly connected to the auxiliary equipment housing (1). The simulation component (5) is detachably connected to the inner wall of the housing (10).

Images