A model for vitreous liquefaction demonstration

Abstract

The utility model relates to teaching model technical field, especially, relate to a vitreous liquefaction demonstration model, including simulation eyeball, the bottom end of simulation eyeball is equipped with base, is provided with control mechanism in base, simulation eyeball includes casing, abuts and is provided with simulation vitreous in casing, simulation vitreous inner chamber is provided with the irregular cystic cavity without content, the hidden cavity without content is formed between casing inner chamber and simulation vitreous, control mechanism includes control assembly, control assembly electric connection has gas circulation subassembly and liquid circulation subassembly, gas circulation subassembly communicates with hidden cavity and irregular cystic cavity respectively, and liquid circulation subassembly communicates with simulation vitreous inner chamber.

Description

Technical Field

[0001] This utility model relates to the field of teaching model technology, and in particular to a vitreous liquefaction demonstration model. Background Technology

[0002] Medical teaching models are the core carriers for medical students and healthcare professionals to master clinical skills, and their simulation accuracy and functional diversity directly affect teaching effectiveness. Ophthalmology, as a discipline with extremely high requirements for anatomical precision and pathological processes, has always placed a focus of medical education technology research on the development of teaching models. Existing ophthalmic models can fully represent the static anatomical structures of the cornea, iris, lens, vitreous body, and retina. Some advanced models, through improvements in materials and mechanical structures, can statically simulate posterior vitreous detachment (PVD) and its resulting retinal tears and rhegmatogenous retinal detachment (RRD), and through physically movable designs, can recreate the mechanical relationship between the vitreous body and retina, providing an intuitive tool for understanding the mechanisms of PVD.

[0003] However, vitreous liquefaction, as a core pathological process in age-related eye diseases such as floaters and PVD, involves a progressive degradation involving multiple factors such as collagen fiber depolymerization, hyaluronic acid diffusion, and water redistribution. It has microscopic and time-dependent characteristics. Current models mostly rely on fixed gels to simulate macroscopic structures or use pre-set mechanical devices to demonstrate the final state of PVD. They cannot visualize the microscopic mechanisms such as the progressive destruction of collagen networks and the dynamic expansion of liquid regions. This makes it difficult for students to understand the causal relationship between liquefaction and PVD and the dynamic changes in traction force, thus restricting the depth of pathology teaching.

[0004] Therefore, this utility model discloses a vitreous liquefaction demonstration model to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a vitreous liquefaction demonstration model to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: a vitreous liquefaction demonstration model, including a simulated eyeball, the bottom of which is fixed to a tabletop by a base, and a control mechanism for controlling the evolution of the simulated eyeball is provided inside the base;

[0007] The simulated eyeball includes a shell, a simulated vitreous body is disposed inside the shell, and the cavity of the simulated vitreous body is provided with an irregular cystic cavity without contents; a hidden cavity without contents is formed between the cavity of the shell and the simulated vitreous body.

[0008] The control mechanism includes a control component electrically connected to a gas circulation component and a liquid circulation component. The gas circulation component is connected to the hidden cavity and the irregular cystic cavity, respectively, and the liquid circulation component is connected to the simulated vitreous cavity.

[0009] Preferably, the simulated vitreous body includes a flexible transparent soft capsule disposed within the housing, the transparent soft capsule being filled with a transparent liquid, the irregular capsule cavity being suspended in the transparent liquid, and the liquid circulation component communicating with the inner cavity of the transparent soft capsule for regulating the amount of transparent liquid stored in the transparent soft capsule.

[0010] Preferably, the liquid circulation assembly includes a liquid storage chamber disposed in the base, the liquid storage chamber storing a transparent liquid; a filling pipe and a return pipe are connected between the liquid storage chamber and the inner cavity of the transparent soft capsule, the filling pipe is provided with a liquid pump for pumping the transparent soft capsule to the transparent soft capsule, and the liquid pump is electrically connected to the control assembly.

[0011] Preferably, a regulating valve is installed on the filling pipe, and an overflow valve is installed on the return pipe. The regulating valve and the overflow valve are electrically connected to the control component, respectively.

[0012] Preferably, a first flow sensor is provided on the filling pipe, and a second flow sensor is provided on the return pipe. The first flow sensor and the second flow sensor are electrically connected to the control component, respectively.

[0013] Preferably, the gas circulation assembly includes an inflation tube and an exhaust tube. The outlet of the inflation tube is connected to the hidden cavity and the irregular bladder cavity, respectively, and the inlet of the inflation tube is connected to an air pump disposed in the base. The exhaust tube connects the hidden cavity and the irregular bladder cavity to the outside.

[0014] Preferably, the irregular cavity is connected to a first shut-off valve and a first check valve, the first shut-off valve is connected to the outlet pipe, and the inlet of the first check valve is connected to the inflation pipe; the hidden cavity is connected to a second shut-off valve and a second check valve, the second shut-off valve is connected to the outlet pipe, and the inlet of the second check valve is connected to the inflation pipe; the first check valve and the second check valve are electrically connected to the control component respectively.

[0015] Preferably, a first pressure sensor is disposed in the irregular cavity, and a second pressure sensor is disposed in the hidden cavity, wherein the first pressure sensor and the second pressure sensor are electrically connected to the control component.

[0016] Preferably, the control component includes a control module with computing functions disposed within the base, and the control module is electrically connected to a display module and an input module disposed on the outer wall of the base.

[0017] Preferably, a simulated lens is embedded in the outer wall of the shell, and the transparent soft capsule is fixedly connected to the outer wall of the simulated lens.

[0018] The present invention discloses the following technical effects:

[0019] This utility model discloses a vitreous liquefaction demonstration model, which includes a simulated eyeball, a base, and a control mechanism. The simulated eyeball has a simulated vitreous body inside its shell, and the cavity within the simulated vitreous body contains irregularly shaped cavities without contents to simulate the liquid cavities formed during vitreous liquefaction. A hidden cavity without contents is formed between the shell and the simulated vitreous body to further simulate vitreous liquefaction and its subsequent changes. The control mechanism includes a control component, a gas circulation component, and a liquid circulation component. The control component operates the entire demonstration process and is electrically connected to the gas circulation component and the liquid circulation component for linkage. The gas circulation component is connected to the hidden cavity and the irregularly shaped cavities respectively, and is used to inject gas into these cavities to simulate the liquefaction process. The liquid... The circulation component is connected to the simulated vitreous cavity and is used to adjust the amount of fluid within the vitreous cavity to simulate the liquefaction effect in conjunction with the gas circulation component. By controlling the gas and fluid circulation components, different stages of vitreous liquefaction and their resulting complications can be simulated, achieving a dynamic simulation of the vitreous liquefaction process. This helps trainees to more intuitively understand the evolution of vitreous liquefaction and its complications. Simultaneously, during the demonstration, visual and auditory feedback is provided through the control component, allowing trainees to better understand the demonstration content. It can serve as a teaching tool for medical students and healthcare professionals, helping them better grasp relevant knowledge about ophthalmic diseases. Furthermore, through hands-on operation and observation of the demonstration process, trainees can deepen their understanding of vitreous liquefaction and its complications.

[0020] The demonstration model of this utility model has a compact structure, is easy to operate, and has strong expandability. It can not only dynamically simulate the process of vitreous liquefaction and its resulting complications, but also serve as a teaching tool to help users better grasp relevant knowledge. It is easy to promote and use in medical institutions, medical colleges and other places. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional schematic diagram of the vitreous liquefaction demonstration model of this utility model;

[0023] Figure 2 This is a schematic diagram of the vitreous liquefaction demonstration model of this utility model;

[0024] Figure 3 This is a schematic diagram of the liquid circulation component structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the gas circulation component structure of this utility model;

[0026] The components include: 1. Simulated eyeball; 2. Base; 3. Control mechanism; 11. Shell; 12. Simulated vitreous body; 13. Irregular capsule; 14. Hidden cavity; 15. Simulated lens; 121. Transparent soft capsule; 122. Transparent liquid; 21. Counterweight; 22. Support rod; 31. Control component; 32. Liquid circulation component; 33. Gas circulation component; 311. Control module; 312. Display module; 313. Input module; 321. Storage... 322. Liquid tank; 323. Filling pipe; 324. Return pipe; 325. Liquid pump; 326. Regulating valve; 327. Overflow valve; 328. First flow sensor; 329. Second flow sensor; 331. Air filling pipe; 332. Air outlet pipe; 333. Air pump; 334. First shut-off valve; 335. First check valve; 336. Second shut-off valve; 337. Second check valve; 338. First pressure sensor; 339. Second pressure sensor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figure 1 - Figure 4 This utility model provides a vitreous liquefaction demonstration model, including a simulated eyeball 1. The bottom of the simulated eyeball 1 is fixed to a table via a base 2. A control mechanism 3 for controlling the evolution of the simulated eyeball 1 is provided inside the base 2.

[0030] The simulated eyeball 1 includes a shell 11, a simulated vitreous body 12 is disposed inside the shell 11, and an irregular cavity 13 without contents is provided inside the simulated vitreous body 12; a hidden cavity 14 without contents is formed between the inner cavity of the shell 11 and the simulated vitreous body 12.

[0031] The control mechanism 3 includes a control component 31, which is electrically connected to a gas circulation component 33 and a liquid circulation component 32. The gas circulation component 33 is connected to the hidden cavity 14 and the irregular cyst cavity 13, respectively, and the liquid circulation component 32 is connected to the inner cavity of the simulated vitreous body 12.

[0032] This utility model discloses a vitreous liquefaction demonstration model, which includes a simulated eyeball 1, a base 2, and a control mechanism 3. The simulated eyeball 1 has a simulated vitreous body 12 inside its shell 11. The simulated vitreous body 12 has an irregular cavity 13 without contents, used to simulate the liquid cavity formed during the simulated liquefaction process. A hidden cavity 14 without contents is formed between the shell 11 and the simulated vitreous body 12, used to further simulate the liquefaction of the simulated vitreous body 12 and its subsequent changes. The control mechanism 3 includes a control component 31, a gas circulation component 33, and a liquid circulation component 32. The control component 31 controls the entire demonstration process and is electrically connected to the gas circulation component 33 and the liquid circulation component 32 for linkage. The gas circulation component 33 is connected to the hidden cavity 14 and the irregular cavity 13 respectively, used to inject gas into these cavities. The gas is used to simulate the liquefaction process; the liquid circulation component 32 is connected to the inner cavity of the simulated vitreous body 12 and is used to adjust the amount of liquid in the vitreous cavity to cooperate with the gas circulation component 33 to simulate the liquefaction effect. The control component 31 manipulates the gas circulation component 33 and the liquid circulation component 32 to simulate different stages of vitreous liquefaction and its resulting complications, achieving a dynamic simulation of the vitreous liquefaction process. This helps trainees to more intuitively understand the evolution of vitreous liquefaction and its complications. Simultaneously, during the demonstration, the control component 31 provides visual and auditory feedback, allowing trainees to better understand the demonstration content. It can serve as a teaching tool for medical students and healthcare professionals, helping them better grasp relevant knowledge of ophthalmic diseases. Through hands-on operation and observation of the demonstration process, they can deepen their understanding of vitreous liquefaction and its complications. This utility model's demonstration model has a compact structure, is easy to operate, and has strong scalability. It can not only dynamically simulate the vitreous liquefaction process and its resulting complications but also serve as a teaching tool to help users better master relevant knowledge. It is easy to promote and use in medical institutions, medical colleges, and other places.

[0033] In one embodiment of this utility model, the top end of the base 2 is fixedly connected to the bottom end of the housing 11 via a support rod 22 to support the simulated eyeball 1; the lines and pipes of the control component 31, the gas circulation component 33 and the liquid circulation component 32 are arranged in the inner cavity of the support rod 22.

[0034] In one embodiment of this utility model, a counterweight 21 is embedded at the bottom end of the base 2, which increases the weight of the base 2 and improves the stability of the base 2.

[0035] A further optimized design includes a simulated vitreous body 12 comprising an elastic transparent soft capsule 121 housed within a shell 11. The transparent soft capsule 121 is filled with a transparent liquid 122. An irregularly shaped cavity 13 is suspended within the transparent liquid 122. A liquid circulation component 32 communicates with the inner cavity of the transparent soft capsule 121 to regulate the amount of transparent liquid 122 stored within the transparent soft capsule 121. The elastic transparent soft capsule 121 filled with transparent liquid 122 forms the simulated vitreous body 12, enabling the simulated vitreous body 12 to more realistically reflect the physical properties of actual vitreous bodies. The irregular cavity 13 is suspended in the transparent liquid 122, simulating the liquid cavity formed during the liquefaction of the vitreous body; the gas circulation component 33 is connected to the irregular cavity 13 and is used to adjust the gas content in the irregular cavity 13, thereby adjusting its size and simulating the behavior of liquid cavities in different states within the vitreous body; the liquid circulation component 32 is connected to the inner cavity of the transparent soft capsule 121, regulating the content of the transparent liquid 122 in the transparent soft capsule 121, maintaining a constant pressure outside the irregular cavity 13, and ensuring the stability of the simulation process.

[0036] In a further optimized design, the liquid circulation component 32 includes a liquid storage tank 321 disposed in the base 2, which stores transparent liquid 122. A filling pipe 322 and a return pipe 323 are connected between the liquid storage tank 321 and the inner cavity of the transparent soft bag 121. A liquid pump 324 for pumping transparent liquid 122 into the transparent soft bag 121 is disposed on the filling pipe 322. The liquid pump 324 is electrically connected to the control component 31. The liquid storage chamber 321 stores a portion of transparent liquid 122, which forms a closed loop with the transparent soft capsule 121 through the filling pipe 322 and the return pipe 323. This allows for precise control of the amount of transparent liquid 122 stored inside the simulated vitreous body 12, which can change the amount of liquid in the transparent soft capsule 121 to match the size changes of the irregular capsule cavity 13, thereby simulating different degrees of liquefaction of the simulated vitreous body 12. The liquid pump 324 serves as the power source for the circulation of the transparent liquid 122, driving the flow of the transparent liquid 122. Under the control of the control component 31, the liquid pump 324 is started, stopped, and adjusted to regulate the pressure of the transparent liquid 122 on the irregular capsule cavity 13 during the liquefaction process of the simulated vitreous body 12, ensuring a stable and safe simulation process.

[0037] The design is further optimized by installing a regulating valve 325 on the filling pipe 322 and an overflow valve 326 on the return pipe 323. Both the regulating valve 325 and the overflow valve 326 are electrically connected to the control component 31. The opening degrees of the regulating valve 325 and the overflow valve 326 are precisely adjusted under the control of the control component 31. The regulating valve 325 controls the filling speed to simulate the liquefaction rate of the vitreous body 12, while the overflow valve 326 prevents excessive return, ensuring the stability of the liquid volume control. This achieves further precise control of the liquid flow rate, allowing for more flexible simulation of the vitreous body 12 liquefaction process and preventing distortion of the demonstration effect caused by excessive or insufficient liquid. It further restores the pathological characteristics of slow liquid accumulation during vitreous liquefaction.

[0038] To further optimize the design, a first flow sensor 327 is installed on the filling pipe 322, and a second flow sensor 328 is installed on the return pipe 323. The first and second flow sensors 327 and 328 are electrically connected to the control component 31. The first flow sensor 327 feeds back the flow rate of the transparent liquid 122 in the filling pipe 322 to the control component 31, while the second flow sensor 328 feeds back the flow rate of the transparent liquid 122 in the return pipe 323. This ensures that the working state of the liquid circulation component 32 meets the preset requirements, achieving closed-loop control of the liquid circulation. This ensures the accuracy and repeatability of liquid volume changes, thereby improving the accuracy and reliability of the demonstration and enhancing the scientific rigor of the teaching demonstration.

[0039] Further optimization of the scheme: the gas circulation component 33 includes an inflation pipe 331 and an exhaust pipe 332. The outlet of the inflation pipe 331 is connected to the hidden cavity 14 and the irregular bladder 13 respectively, and the inlet of the inflation pipe 331 is connected to the air pump 333 installed in the base 2. The exhaust pipe 332 connects the hidden cavity 14 and the irregular bladder 13 to the outside. The inlet of the inflation tube 331 is connected to the outlet of the air pump 333, while the outlet of the inflation tube 331 forms two independent branch tubes that are connected to the hidden cavity 14 and the irregular capsule 13 respectively, for inflating the hidden cavity 14 and the irregular capsule 13. The inlet of the exhaust tube 332 is also connected to the hidden cavity 14 and the irregular capsule 13 through two independent branch tubes, allowing for independent controlled inflation of the hidden cavity 14 and the irregular capsule 13 by the air pump 333. This enables regulation of the gas pressure inside the hidden cavity 14 and the irregular capsule 13 inside the simulated eyeball 1, simulating the changes in the fluid cavity during vitreous liquefaction, as well as the changes in the cavity during posterior vitreous detachment and vitreous liquefaction, enriching the demonstration content. The exhaust tube 332 is used to balance the air pressure in the irregular capsule 13 and the hidden cavity 14, ensuring a stable and controllable simulation process.

[0040] In a further optimized design, the irregular cavity 13 is connected to a first shut-off valve 334 and a first check valve 335. The first shut-off valve 334 is connected to the air outlet pipe 332, and the inlet of the first check valve 335 is connected to the inflation pipe 331. The hidden cavity 14 is connected to a second shut-off valve 336 and a second check valve 337. The second shut-off valve 336 is connected to the air outlet pipe 332, and the inlet of the second check valve 337 is connected to the inflation pipe 331. The first check valve 335 and the second check valve 337 are electrically connected to the control component 31, respectively. The first shut-off valve 334 controls the efficiency of air discharge from the irregular cyst 13 to the outlet tube 332, while the first check valve 335, under the control of the control component 31, adjusts the efficiency of air inflating the irregular cyst 13 through the inflation tube 331. The second shut-off valve 336 controls the efficiency of air discharge from the hidden cavity 14 to the outlet tube 332, and the second check valve 337, under the control of the control component 31, adjusts the inflation efficiency of the inflation tube 331 to the hidden cavity 14. Precise control of gas flow direction and pressure enables independent gas pressure regulation of the irregular cyst 13 and the hidden cavity 14, which can more flexibly simulate the changes in the liquid cavity during the liquefaction of the vitreous body 12 and prevent the distortion of the demonstration effect caused by gas backflow or leakage. It can accurately simulate the pathological changes in different areas of the vitreous body, such as the difference between posterior vitreous detachment and the expansion of the liquefaction area.

[0041] To further optimize the design, a first pressure sensor 338 is installed in the irregular cavity 13, and a second pressure sensor 339 is installed in the hidden cavity 14. Both the first and second pressure sensors 338 and 339 are electrically connected to the control component 31. The first pressure sensor 338 monitors the pressure in the irregular cavity 13 in real time, while the second pressure sensor 339 monitors the gas pressure in the hidden cavity 14 in real time. During measurement, the data is fed back to the control component 31, which adjusts the power of the air pump 333 and the valve opening to promptly adjust the operating status and ensure that the gas pressure remains stable at the preset value. This meets the gas pressure requirements for different stages of vitreous liquefaction or post-detachment, improving the accuracy and safety of the simulation.

[0042] Further optimizing the design, the control component 31 includes a control module 311 with computational functions, housed within the base 2. The control module 311 is electrically connected to a display module 312 and an input module 313, both located on the outer wall of the base 2. The control module 311 is the core processing unit of the entire device. Like a PLC with programming and computational functions, data measured by various sensors is input to the control module 311. After calculation by the control module 311, control commands are output to control the operating status of the remaining components, thus achieving control and monitoring of the entire demonstration model. The display module 312 is installed on the side wall of the base 2 and is electrically connected to the control module 311. It is used to intuitively display changes in simulation parameters and to display visual imaging results during the simulation process in real time, achieving intelligent and interactive teaching demonstrations and enhancing the user experience. The input module 313 includes several buttons electrically connected to the control module 311, used to input control commands to the control module 311, adjust the computational process of the control module 311, and simulate different pathological processes.

[0043] In one embodiment of the present invention, the display module 312 includes a display and a voice broadcasting system. The display and the voice broadcasting system are electrically connected to the control module 311. The display is used to intuitively display the simulation results, and the voice broadcasting system is used to broadcast the simulation results.

[0044] In one embodiment of this utility model, the display can be a model with touch screen functionality, which allows for device control via the touch screen; at the same time, the display status of the simulation results can be controlled via the touch screen when displaying simulation results, making it more flexible and convenient and improving the understanding of key points.

[0045] The design is further optimized by embedding a simulated lens 15 into the outer wall of the shell 11, with the transparent soft capsule 121 fixedly connected to the outer wall of the simulated lens 15. The placement of the simulated lens 15 and its positional relationship correspond to the actual anatomical structure of the eyeball, allowing the demonstration model to better simulate other structural features of the eyeball while demonstrating vitreous liquefaction, ensuring the structural integrity of the simulated eyeball 1, and enhancing the intuitiveness and educational value of the demonstration.

[0046] The simulation method of this utility model:

[0047] 1. To demonstrate the formation of vitreous liquefaction, the control module 311 opens the air pump 333 and the first check valve 335, closes the second check valve 337, and closes the first shut-off valve 334. The air pump 333 is controlled to uniformly deliver air through the inflation tube 331 into the irregular cystic cavity 13 to simulate the liquid cavity formed by vitreous liquefaction. When the gas pressure sensor shows that the gas pressure in the irregular cystic cavity 13 reaches the preset value A, the control module 311 closes the first check valve 335 and the air pump 333. The overflow valve 326 is opened to deliver a portion of the transparent liquid 122 in the vitreous cavity to the storage tank 321 through the return pipe 323. When the second flow sensor 328 shows that the volume of flowing liquid reaches the preset value B, the overflow valve 326 is closed. The control module 311 controls the display to show an image of an object obscured by a shadow, and at the same time, the control module 311 controls the voice broadcast system to announce, "Floaters are caused by vitreous liquefaction. It is recommended to go to the hospital for examination."

[0048] 2. To demonstrate posterior vitreous detachment caused by vitreous liquefaction, the first check valve 335 is closed and the first shut-off valve 334 is opened via control module 311 to expel gas from the irregular cavity 13; the second check valve 337 is opened and the second shut-off valve 336 is closed via control module 311, and the air pump 333 is controlled to uniformly deliver air into the hidden cavity 14 through the inflation tube 331. When the gas pressure sensor indicates that the gas pressure in the irregular cavity 13 reaches the preset value C, the second check valve 337 and the air pump 333 are closed via control module 311; the second check valve 337 is opened and the air pump 333 is opened. Overflow valve 326 delivers a portion of the transparent liquid 122 from the vitreous cavity to the storage tank 321 through return pipe 323. When the second flow sensor 328 displays that the volume of the flowing liquid has reached the preset value D, overflow valve 326 is closed. Control module 311 controls the display to show an image of an object obscured by a shadow, and at fixed intervals, switches the image to show a white highlighted image. Control module 311 controls the voice broadcast system to announce, "Due to posterior vitreous detachment causing flashes of light, it is recommended to go to the hospital for a fundus examination and treatment to prevent further vision loss."

[0049] 3. After all demonstrations are completed, the control module 311 closes the second check valve 337 and opens the second shut-off valve 336 to discharge the air from the hidden chamber 14 through the vent pipe 332; the control module 311 closes the overflow valve 326 and opens the liquid pump 324 and regulating valve 325 to transport the transparent liquid 122 in the storage tank 321 into the transparent soft bag 121 through the filling pipe 322; when the first flow sensor 327 shows that the volume of the flowing transparent liquid 122 has reached the preset value E, the liquid pump 324 and regulating valve 325 are turned off; the control module 311 controls the display to show a picture of a normal object; the control module 311 controls the voice broadcast system to announce "Retinal function can be restored through treatment, and vision can be protected from further damage. It is also recommended to have regular check-ups at the hospital."

[0050] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A vitreous liquefaction demonstration model, characterized in that: Includes a simulated eyeball (1), the bottom end of which is fixed to a tabletop via a base (2), and the base (2) is provided with a control mechanism (3) for controlling the evolution of the simulated eyeball (1); The simulated eyeball (1) includes a shell (11), and a simulated vitreous body (12) is disposed inside the shell (11). The simulated vitreous body (12) has an irregular cavity (13) without contents. A hidden cavity (14) without contents is formed between the cavity of the shell (11) and the simulated vitreous body (12). The control mechanism (3) includes a control component (31), which is electrically connected to a gas circulation component (33) and a liquid circulation component (32). The gas circulation component (33) is connected to the hidden cavity (14) and the irregular cystic cavity (13), respectively, and the liquid circulation component (32) is connected to the inner cavity of the simulated vitreous body (12).

2. The vitreous liquefaction demonstration model according to claim 1, characterized in that: The simulated vitreous body (12) includes a flexible transparent soft capsule (121) disposed within the housing (11), the transparent soft capsule (121) being filled with a transparent liquid (122), the irregular cavity (13) being suspended in the transparent liquid (122), and the liquid circulation component (32) communicating with the inner cavity of the transparent soft capsule (121) for regulating the amount of transparent liquid (122) stored in the transparent soft capsule (121).

3. The vitreous liquefaction demonstration model according to claim 2, characterized in that: The liquid circulation assembly (32) includes a liquid storage tank (321) disposed in the base (2), which stores transparent liquid (122); the liquid storage tank (321) and the inner cavity of the transparent soft bag (121) are connected by a filling tube (322) and a return tube (323), and the filling tube (322) is provided with a liquid pump (324) for pumping transparent liquid (122) into the transparent soft bag (121), and the liquid pump (324) is electrically connected to the control assembly (31).

4. The vitreous liquefaction demonstration model according to claim 3, characterized in that: A regulating valve (325) is installed on the filling pipe (322), and an overflow valve (326) is installed on the return pipe (323). The regulating valve (325) and the overflow valve (326) are electrically connected to the control component (31).

5. The vitreous liquefaction demonstration model according to claim 4, characterized in that: A first flow sensor (327) is provided on the filling pipe (322), and a second flow sensor (328) is provided on the return pipe (323). The first flow sensor (327) and the second flow sensor (328) are electrically connected to the control component (31).

6. The vitreous liquefaction demonstration model according to claim 1, characterized in that: The gas circulation assembly (33) includes an inflation tube (331) and an exhaust tube (332). The outlet of the inflation tube (331) is connected to the hidden cavity (14) and the irregular bladder (13) respectively. The inlet of the inflation tube (331) is connected to an air pump (333) installed in the base (2). The exhaust tube (332) connects the hidden cavity (14) and the irregular bladder (13) to the outside.

7. The vitreous liquefaction demonstration model according to claim 6, characterized in that: The irregular cavity (13) is connected to a first shut-off valve (334) and a first check valve (335). The first shut-off valve (334) is connected to the air outlet pipe (332), and the inlet of the first check valve (335) is connected to the inflation pipe (331). The hidden cavity (14) is connected to a second shut-off valve (336) and a second check valve (337). The second shut-off valve (336) is connected to the air outlet pipe (332), and the inlet of the second check valve (337) is connected to the inflation pipe (331). The first check valve (335) and the second check valve (337) are electrically connected to the control component (31).

8. The vitreous liquefaction demonstration model according to claim 7, characterized in that: A first pressure sensor (338) is provided in the irregular cavity (13), and a second pressure sensor (339) is provided in the hidden cavity (14). The first pressure sensor (338) and the second pressure sensor (339) are electrically connected to the control component (31).

9. The vitreous liquefaction demonstration model according to claim 1, characterized in that: The control component (31) includes a control module (311) with computing function disposed in the base (2), and the control module (311) is electrically connected to the display module (312) and the input module (313) disposed on the outer wall of the base (2).

10. The vitreous liquefaction demonstration model according to claim 2, characterized in that: The outer wall of the housing (11) is fitted with a simulated lens (15), and the transparent soft capsule (121) is fixedly connected to the outer wall of the simulated lens (15).

Images