Heart beat and blood circulation dynamic teaching model
By designing a dynamic teaching model of heartbeat and blood circulation, the model accurately simulates the contraction and relaxation of the heart and clearly displays blood flow, solving the problem that existing models cannot dynamically simulate heartbeat and blood flow, thus enhancing the teaching effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-13
- Publication Date
- 2026-03-10
AI Technical Summary
Existing biological teaching models cannot dynamically simulate heartbeats and blood flow, and lack synchronous demonstrations of heartbeat sounds, resulting in poor teaching effectiveness.
Design a dynamic teaching model of heartbeat and blood circulation, including a heart simulation unit, a blood vessel simulation unit, an organ simulation unit, a circulation drive unit, and a control unit. It simulates the unidirectional flow of blood and the synchronization of heart contraction frequency with heartbeat sound, and uses temperature-sensitive materials and multi-scene simulation functions.
It achieves precise simulation of cardiac contraction and relaxation, clearly demonstrates the process of arterial and venous blood transformation, enhances the immersive learning experience, and helps students understand the relationship between the cardiac cycle and blood circulation.
Smart Images
Figure CN121640807A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of biological teaching aids technology, specifically to a dynamic teaching model of heartbeat and blood circulation. Background Technology
[0002] In junior high school biology teaching, the structure of the human heart and the blood circulation pathway are key and challenging topics. Currently available blood circulation models are mostly static structures, only demonstrating the static positional relationships of the heart, blood vessels, and organs. They cannot simulate the dynamic process of cardiac contraction and relaxation, nor can they visually represent the flow of blood or the conversion between arterial and venous blood, and they lack a synchronized demonstration of heartbeat sounds. These static models are simple to make and offer limited demonstrations, making it difficult for students to understand the relationship between the heartbeat cycle and blood circulation, resulting in poor teaching effectiveness.
[0003] In view of this, a teaching model was designed that can dynamically simulate heartbeat and blood flow, clearly demonstrate arteriovenous blood transformation, and simultaneously present the sound of heartbeat. Summary of the Invention
[0004] To address the problems of existing technologies, this invention provides a dynamic teaching model for heartbeat and blood circulation, comprising: A heart simulation unit, which is a closed cavity with elastic deformation, is used to simulate the contraction and relaxation of the human heart. Vascular simulation unit and organ simulation unit; The vascular simulation unit is a flexible pipeline, with one end sealed to the heart simulation unit and the other end sealed to the organ simulation unit. The vascular simulation unit is equipped with a one-way control component to limit the one-way flow direction of the simulated blood medium. The organs are simulated according to their relative positions in the coronal plane of the human body; The simulated blood medium fills the closed passage formed by the heart simulation unit and the blood vessel simulation unit; the simulated blood medium includes two different colored fluid media, used to simulate arterial blood and venous blood respectively; A circulation drive unit is connected in series in the circulation path of the vascular simulation unit to drive the simulated blood medium to circulate between the vascular simulation unit and the heart simulation unit. The control unit is electrically connected to the heart simulation unit, the circulation drive unit and the audio system, respectively, and is used to control the contraction frequency of the heart simulation unit and synchronize the contraction action of the heart simulation unit with the heartbeat sound played by the audio system.
[0005] Furthermore, the heart simulation unit includes: a left heart simulation unit and a right heart simulation unit; The left heart simulation unit and the right heart simulation unit are each independent elastic sealed cavities, and correspond to the left heart and right heart of the human body, respectively. The control unit includes: a power output component and a transmission component; The power output component is electrically connected to the control unit; One end of the transmission component is fixedly connected to the output end of the power output component, and the other end is provided with two abutment parts; The abutting parts respectively abut against the outer walls of the left heart simulation unit and the right heart simulation unit, in order to realize the synchronous contraction simulation of the left and right hearts.
[0006] Furthermore, the vascular simulation unit includes an aortic simulation segment, a pulmonary artery simulation segment, a peripheral vascular simulation segment, a pulmonary vein simulation segment, and a vena cava simulation segment; One end of the aortic simulation segment is sealed to the left ventricular output end of the cardiac simulation unit, and the other end of the aortic simulation segment is sealed to the input end of the peripheral vascular simulation segment through a branch connector. One end of the pulmonary artery simulation segment is sealed to the right ventricular output end of the cardiac simulation unit, and the other end of the pulmonary artery simulation segment is sealed to the input end of the lung simulation component in the organ simulation unit through a branch connector. The input end of the branch conduit of the peripheral vascular simulation segment is sealed and connected to the corresponding ports of the kidney simulation component, liver simulation component, and gastrointestinal simulation component in the organ simulation unit, respectively, and the output end of the branch conduit of the peripheral vascular simulation segment is sealed and connected to the input end of the vena cava simulation segment. The output end of the vena cava simulation segment is sealed to the right atrial input end of the cardiac simulation unit. One end of the pulmonary vein simulation segment is sealed to the output end of the lung simulation device, and the other end of the pulmonary vein simulation segment is sealed to the left heart input end of the heart simulation unit. Furthermore, at least four unidirectional control components are provided; The first one-way control component is sealed and installed at the connection port between the aortic simulation segment and the left ventricular output end of the heart simulation unit. One end is connected to the left ventricular port of the heart simulation unit, and the other end is connected to the aortic simulation segment port. The second one-way control component is sealed and installed at the connection port between the pulmonary artery simulation segment and the right ventricular output end of the cardiac simulation unit. One end is connected to the right ventricular port of the cardiac simulation unit, and the other end is connected to the pulmonary artery simulation segment port. The third unidirectional control component is sealed and installed at the connection port between the pulmonary vein simulation segment and the left ventricular input end of the cardiac simulation unit, with one end connected to the port of the pulmonary vein simulation segment and the other end connected to the port of the left ventricular chamber of the cardiac simulation unit. The fourth one-way control component is sealed and installed at the connection port between the vena cava simulation segment and the right ventricular input end of the cardiac simulation unit, with one end connected to the port of the vena cava simulation segment and the other end connected to the port of the right ventricular chamber of the cardiac simulation unit. Furthermore, the input end of the cyclic drive unit is sealed and connected to a section of the pipeline of the vascular simulation unit, and the output end of the cyclic drive unit is sealed and connected to another section of the pipeline of the vascular simulation unit.
[0007] Furthermore, the overall shape of the model is a rectangular transparent cavity; The heart simulation unit, organ simulation unit, circulation drive unit, and control unit are all integrated and installed on the inner wall of the rectangular transparent cavity, and the speaker is fixed to one side of the rectangular transparent cavity.
[0008] Furthermore, the speaker has a built-in audio module that simulates the sound of a human heartbeat. The audio module is connected to the control unit. The control unit detects the feedback signal of the contraction action of the heart simulation unit and triggers the audio module to play the heartbeat sound synchronously. The loudness of the heartbeat sound is adjusted synchronously with the contraction frequency of the heart simulation unit. The higher the heartbeat frequency, the louder the speaker is, so as to match the heartbeat sound of the human body in different states.
[0009] Furthermore, the flexible tubing of the vascular simulation unit is made of a temperature-sensitive, safe, and non-toxic flexible material. During cold environment simulation, the inner diameter of the tubing shrinks to 70%-80% of its original size, while during hot environment simulation, the inner diameter of the tubing expands to 120%-130% of its original size. The external outline of the organ simulation unit matches the simplified structure of the corresponding human organ.
[0010] Furthermore, the control unit includes: a rhythm control component, a power drive component, and a state adjustment module; The state adjustment module is electrically connected to the rhythm control component and is used to input instructions for different human activity states and ambient temperature. Human activity states include: resting, normal walking, and exercise; environmental temperature includes: cold and hot.
[0011] The rhythm control component is connected to the power drive component, which is in turn connected to the heart simulation unit. Different parameters are set according to instructions. Furthermore, the organ simulation unit includes at least one or more of the following: lung simulator, kidney simulator, liver simulator, and gastrointestinal simulator; Each simulation component is sealed to the heart simulation unit through a corresponding branch pipe of the vascular simulation unit, and is distributed around the heart simulation unit according to the relative position of the human coronal plane; and the flow rate of the branch pipe of the vascular simulation unit is synchronously adjusted according to the activity state and ambient temperature parameters set by the control unit. The higher the activity intensity and the more extreme the ambient temperature, the greater the flow rate of the branch pipe.
[0012] The beneficial effects of this invention are: 1. By setting up independent, elastic, sealed cavity-type heart simulation units for the left and right sides, the system accurately simulates the contraction and relaxation of the human heart, visually presenting the heartbeat cycle; two different colored simulated blood media clearly distinguish arterial blood from venous blood, visually demonstrating the arteriovenous blood conversion process; four unidirectional control components corresponding to the heart valve locations restrict the unidirectional flow of simulated blood, conforming to the physiological blood circulation path of the human body; and through the circulation drive unit, the system stably drives the simulated blood circulation flow, dynamically demonstrating the entire blood circulation process.
[0013] 2. By setting up a control unit state adjustment module that can input commands for different activity states and ambient temperatures, simulations of multiple scenarios such as rest, exercise, cold, and heat were achieved, helping to understand the impact of different working conditions on blood circulation; and the sound system, which synchronizes heart contractions and adjusts loudness with frequency, achieved visual and auditory synergy, enhanced the immersive learning experience, and helped to understand the relationship between heart rate and sound.
[0014] 3. By setting up a blood vessel simulation unit made of temperature-sensitive flexible material, the phenomenon of blood vessel contraction in cold weather and expansion in hot weather was intuitively presented, which helps to understand the effect of ambient temperature on blood vessels.
[0015] 4. By setting up organ simulation units arranged according to the relative positions of the human body in the coronal plane, the relative positional relationships of the major organs of the human body were restored, which helped to understand the overall mechanism of blood circulation.
[0016] 5. By setting up vascular branch pipelines that synchronously adjust the flow rate according to the operating parameters, the effect of simulating the changes in organ blood flow under different human conditions was obtained, which closely matches the physiological response of the human body. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Fig. 1 This is a schematic diagram of the teaching model structure provided by the present invention; Fig. 2 This is a schematic block diagram illustrating the principle of the teaching model provided by this invention. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
[0020] See Figs. 1-2 A dynamic teaching model of heartbeat and blood circulation, including: The heart simulation unit is a sealed cavity with elastic deformation made of TPU drip bottle, used to simulate the contraction and relaxation of the human heart, and is suitable for the demonstration needs of heart structure and pulsation process in junior high school biology teaching. Vascular simulation unit and organ simulation unit; The vascular simulation unit is a food-grade flexible tube, one end of which is sealed to the heart simulation unit and the other end of which is sealed to the organ simulation unit. The vascular simulation unit is equipped with a one-way control component to limit the one-way flow direction of the simulated blood medium, ensuring that the blood circulation path is consistent with the human physiological mechanism. The organ simulation units are arranged according to their relative positions in the coronal plane of the human body. Some organ simulation components are reduced in size, enlarged, or appropriately shifted according to the demonstration focus of blood circulation and cardiac cycle, so as to highlight the core teaching content. The simulated blood medium fills the closed passage formed by the heart simulation unit and the blood vessel simulation unit; the simulated blood medium is specifically bright red ink and dark red ink, which are used to simulate arterial blood and venous blood respectively, clearly presenting the conversion process of arterial and venous blood. A circulation drive unit, which is a food-grade liquid pump adapted to simulated blood medium, is connected in series in the circulation path of the vascular simulation unit to drive the bright red and dark red ink-like simulated blood medium to circulate stably between the vascular simulation unit and the heart simulation unit. The control unit is electrically connected to the heart simulation unit, the cycle drive unit and the audio system respectively. The control unit has a built-in time-delay cycle relay, and the initial heart contraction frequency is set to 60 times per minute. It can be adjusted according to teaching needs. It is used to control the contraction frequency of the heart simulation unit and synchronize the contraction action of the heart simulation unit with the heartbeat sound played by the audio system. The model is a rectangular transparent cavity made of transparent plastic, with dimensions of 48.5cm×19cm×75cm. It is suitable as a visual teaching aid for teaching the structure of the human heart and blood circulation in junior high school biology, and is used to solve key and difficult points in teaching, and help students understand the heart cycle and blood circulation pathway. The model must be connected to a 220V AC power supply and the switch must be turned on when in use. The power should be turned off immediately after use.
[0021] In some embodiments, the heart simulation unit includes: a left heart simulation unit and a right heart simulation unit; The left heart simulation unit and the right heart simulation unit are both independent elastic sealed cavities made of TPU drip bottles, which correspond to the structure and function of the left and right hearts of the human body, respectively, and can simulate the contraction and compression and relaxation rebound of the heart chambers. The control unit includes: a power output component and a transmission component; The power output component is a synchronous motor, which is electrically connected to the control unit and is controlled by a time-delayed cyclic relay to output a stable driving force. The transmission component is specifically a crankshaft, one end of which is fixedly connected to the output end of the synchronous motor, and the other end is provided with two abutment parts that are adapted to the outer walls of the left heart simulation unit and the right heart simulation unit. The contact parts are in close contact with the outer walls of the left heart simulation unit and the right heart simulation unit, respectively. The crankshaft is rotated by a synchronous motor to realize the alternating compression and release of the two elastic sealed cavities, thereby simulating the synchronous contraction and relaxation of the left and right hearts and restoring the beating mechanism of the human heart.
[0022] In some embodiments, the vascular simulation unit includes: an aortic simulation segment, a pulmonary artery simulation segment, a peripheral vascular simulation segment, a pulmonary vein simulation segment, and a vena cava simulation segment, each segment being made of food-grade flexible tubing; One end of the aortic simulation segment is sealed to the left ventricular output end of the cardiac simulation unit, and a sealing structure is provided at the connection to prevent leakage of simulated blood. The other end of the aortic simulation segment is sealed to the input end of the peripheral vascular simulation segment through a branch connector to ensure smooth blood flow. One end of the pulmonary artery simulation segment is sealed to the right ventricular output end of the heart simulation unit and is also provided with a sealing protection structure. The other end of the pulmonary artery simulation segment is sealed to the input end of the lung simulation component in the organ simulation unit through a branch connector, matching the human pulmonary artery blood supply path. The input ends of the branch pipes of the peripheral vascular simulation section are sealed and connected to the corresponding ports of the kidney, liver, and gastrointestinal simulation components in the organ simulation unit. Each branch pipe is adapted to meet the blood supply requirements of the corresponding organ. The output ends of the branch pipes of the peripheral vascular simulation section are sealed and connected to the input ends of the vena cava simulation section to form a systemic circulation return path. The output end of the vena cava simulation segment is sealed to the right heart input end of the heart simulation unit to ensure that venous blood flows smoothly back to the right heart; One end of the pulmonary vein simulation segment is sealed to the output end of the lung simulation component, and the other end is sealed to the left heart input end of the heart simulation unit, thus completely restoring the blood return path of the pulmonary circulation. All pipeline connection nodes employ a sealing process adapted to food-grade hoses to prevent leakage of simulated blood media.
[0023] In some embodiments, the one-way control component is a check valve adapted to food-grade tubing and TPU cavity, with at least four valves provided, to simulate the one-way conduction function of human heart valves and ensure that simulated blood flows along the physiological path. The first one-way control component (check valve) is sealed and installed at the connection port between the aortic simulation segment and the left ventricular output end of the heart simulation unit. One end is connected to the left ventricular port of the heart simulation unit, and the other end is sealed and connected to the aortic simulation segment port, restricting blood flow only from the left ventricular to the aorta. The second one-way control component (check valve) is sealed and installed at the connection port between the pulmonary artery simulation segment and the right heart output end of the heart simulation unit. One end is connected to the right heart chamber port of the heart simulation unit, and the other end is sealed and connected to the pulmonary artery simulation segment port, restricting blood flow only from the right heart to the pulmonary artery. The third one-way control component (check valve) is sealed and installed at the connection port between the pulmonary vein simulation segment and the left ventricular input end of the cardiac simulation unit. One end is connected to the port of the pulmonary vein simulation segment, and the other end is sealed and connected to the port of the left ventricular chamber of the cardiac simulation unit, restricting blood flow to the left ventricular chamber only from the pulmonary vein. The fourth one-way control component (check valve) is sealed and installed at the connection port between the vena cava simulation segment and the right heart input end of the heart simulation unit. One end is connected to the port of the vena cava simulation segment, and the other end is sealed and connected to the port of the right heart chamber of the heart simulation unit, restricting blood to flow only from the vena cava to the right heart. The materials of each check valve are compatible with the simulated blood medium and pipeline materials.
[0024] In some embodiments, the circulation drive unit is a food-grade liquid pump, the input end of which is sealed and connected to a section of the pipeline of the vascular simulation unit through a sealing joint, and the output end of the circulation drive unit is sealed and connected to another section of the pipeline of the vascular simulation unit through a sealing joint, forming a complete circulation drive path. The liquid pump is electrically connected to the control unit and is controlled in conjunction with the control unit's state adjustment module and rhythm control component. It can adjust the output power according to the set human activity state (resting, normal walking, exercise) and ambient temperature (cold, hot) parameters, thereby changing the circulation flow rate of the simulated blood medium. The operating parameters of the liquid pump are adapted to the overall structure of the model to avoid pipe detachment or leakage due to excessive flow rate, while ensuring that the simulated blood flow state meets the intuitive requirements of teaching demonstration, allowing students to clearly observe the blood circulation process. The pump is designed to be moisture-proof and high-temperature resistant, making it suitable for the model's operating environment and preventing overheating damage from prolonged operation, thus addressing the model's precautions against prolonged operation.
[0025] In some embodiments, the overall shape of the model is a rectangular transparent cavity made of transparent plastic. The transparent material ensures that teachers and students can observe the heartbeat, blood flow and organ distribution from multiple angles during the teaching process, highlighting the demonstration effect. The heart simulation unit (TPU drip bottle), organ simulation unit (made of clay), circulation drive unit (food-grade liquid pump), and control unit are all integrated and mounted on the inner wall of the rectangular transparent cavity through a stable bracket. The installation structure is adapted to the requirements of gentle handling and impact protection of the model, and avoids the shaking or falling off of the parts during operation. The speaker is fixed to one side of the rectangular transparent cavity by a fixing clip. The installation position ensures that the heartbeat sound is clearly transmitted and does not obstruct the viewing angle, which is suitable for the needs of multiple people watching the demonstration in teaching scenarios. The rectangular transparent cavity is made of a material with a certain degree of impact resistance, while also taking precautions against moisture, inversion, light exposure, and dust.
[0026] In some embodiments, the speaker has a built-in audio module that simulates the sound of a real human heartbeat, and the audio files are adapted to the demonstration needs of junior high school biology teaching, clearly reproducing the sound of a human heartbeat in different states. The audio module is electrically connected to the control unit. The control unit detects the feedback signal of the contraction action of the heart simulation unit driven by the synchronous motor, and triggers the audio module to play the heartbeat sound synchronously, so as to achieve complete synchronization between the visual heartbeat and the auditory heartbeat sound, thereby enhancing the immersive experience of teaching. The loudness of the heartbeat sound is synchronously adjusted with the contraction frequency of the heart simulation unit. Specifically, the higher the heartbeat frequency, the louder the sound. It can match the heartbeat sound characteristics of different activity states such as resting (initially 60 beats / minute), normal walking, and exercise, helping students understand the relationship between heartbeat frequency and sound intensity. The speaker is powered by 220V AC power and is compatible with the overall power supply system of the model. It operates without significant noise interference and the volume adjustment range is suitable for classroom teaching environments.
[0027] In some embodiments, the flexible tubing of the vascular simulation unit is made of food-grade, temperature-sensitive, safe and non-toxic flexible material, which not only meets the safety standards of teaching aids, but also simulates the contraction and dilation characteristics of human blood vessels under different temperature environments. In cold environment simulations, the inner diameter of the pipe shrinks to 70%-80% of its original size, while in hot environment simulations, the inner diameter expands to 120%-130% of its original size. Through the intuitive changes in pipe size, students can understand the impact of ambient temperature on blood circulation. The organ simulation units are designed to match the simplified structures of the corresponding human organs. They are made of clay and include lung, kidney, liver, and gastrointestinal simulation units. The materials are safe and non-toxic, and the shapes are intuitive and easy for students to identify.
[0028] In some embodiments, the control unit includes: a rhythm control component, a power drive component, and a state adjustment module, each component being integrated and mounted on a bracket on the inner wall of a rectangular transparent cavity; The state adjustment module is electrically connected to the rhythm control component and is used to input instructions for different human activity states and ambient temperatures, wherein human activity states include resting, normal walking and exercise, and ambient temperatures include cold and hot. The rhythm control component is specifically a time-delayed cyclic relay, initially set to a cardiac contraction rhythm of 60 beats per minute, which can be flexibly adjusted according to the instructions of the state adjustment module to control the heart rate. The power drive component includes a synchronous motor and a food-grade liquid pump. The rhythm control component is electrically connected to the power drive component, and the power drive component is drive-connected to the heart simulation unit. The working logic of the control unit is as follows: according to the instructions input by the state adjustment module, the rhythm control component adjusts the speed of the synchronous motor (controlling the heart contraction frequency) and the output power of the liquid pump (controlling the blood circulation flow) to realize dynamic simulation under different working conditions; The control unit is powered by 220V AC power and has an independent switch. To use it, simply turn on the switch after connecting the power supply. After use, the power supply must be turned off promptly.
[0029] In some embodiments, the organ simulation unit includes at least one or more of lung, kidney, liver, and gastrointestinal simulation components, and preferably adopts a full configuration design to completely restore the blood circulation path of the major human organs; Each simulation component is made of clay and distributed around the heart simulation unit according to the relative position of the coronal plane of the human body. Some simulation components are reduced in size, enlarged, or appropriately shifted according to the demonstration focus to highlight the key pathways of systemic circulation and pulmonary circulation, helping students understand the overall mechanism of blood circulation. Each simulation component is sealed to the heart simulation unit through a corresponding food-grade branch tubing of the vascular simulation unit. The diameter of the branch tubing is adapted to the blood supply requirements of the corresponding organ, and the connection nodes are sealed to prevent leakage. The flow rate of the branch tubing of the vascular simulation unit is synchronously adjusted according to the activity state and ambient temperature parameters set by the control unit. The specific adjustment logic is as follows: the higher the activity intensity and the more extreme the ambient temperature, the greater the output power of the liquid pump adjusted by the control unit, and the greater the flow rate of the branch tubing, simulating the changes in blood circulation flow rate under different working conditions of the human body. The connection method between the branch pipeline and the organ simulation component is easy to disassemble and replace. If the simulation component is damaged due to long-term use, it can be replaced separately, reducing maintenance costs. The connection points between the simulated organs and the branch pipelines are designed to ensure that the simulated blood flow path is consistent with the human physiological mechanism, thereby demonstrating the path of blood flow throughout the human body.
[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A dynamic teaching model for heartbeat and blood circulation, characterized in that, The application relates to a heart and blood vessel simulation device. The heart simulation unit is a closed cavity with elastic deformation, used for simulating the contraction and relaxation of a human heart. The blood vessel simulation unit is a flexible pipeline, one end of which is connected with the heart simulation unit, the other end is connected with the organ simulation unit, and a one-way control component is arranged on the blood vessel simulation unit, used for limiting the one-way flowing direction of the simulation blood medium. The organ simulation unit is arranged according to the relative position of the human coronary surface. The simulation blood medium is filled in the closed passage formed by the heart simulation unit and the blood vessel simulation unit. The simulation blood medium includes two kinds of fluid medium, respectively used for simulating arterial blood and venous blood. The circulation driving unit is connected in series in the circulation passage of the blood vessel simulation unit, used for driving the simulation blood medium to flow in the circulation passage. The control unit is electrically connected with the heart simulation unit, the circulation driving unit and the sound, used for controlling the contraction frequency of the heart simulation unit, and making the contraction action of the heart simulation unit synchronous with the heartbeat sound played by the sound.
2. The heart and blood circulation dynamic teaching model according to claim 1, characterized in that, The heart simulation unit includes a left heart simulation unit and a right heart simulation unit. The left heart simulation unit and the right heart simulation unit are independent elastic closed cavities, respectively corresponding to the left heart and the right heart of the human body. The control unit includes a power output component and a transmission component. The power output component is electrically connected with the control unit. One end of the transmission component is fixedly connected with the output end of the power output component, and the other end is provided with two abutting portions. The abutting portions respectively abut against the outer walls of the left heart simulation unit and the right heart simulation unit, used for realizing the synchronous contraction simulation of the left heart and the right heart.
3. The heart and blood circulation dynamic teaching model according to claim 1, characterized in that, The blood vessel simulation unit includes an aorta simulation section, a pulmonary artery simulation section, a peripheral blood vessel simulation section, a pulmonary vein simulation section and a vena cava simulation section. One end of the aorta simulation section is sealingly connected with the left heart output end of the heart simulation unit, and the other end of the aorta simulation section is sealingly connected with the input end of the peripheral blood vessel simulation section through a branch joint. One end of the pulmonary artery simulation section is sealingly connected with the right heart output end of the heart simulation unit, and the other end of the pulmonary artery simulation section is sealingly connected with the input end of the lung simulation part of the organ simulation unit through a branch joint. The input ends of the branch pipelines of the peripheral blood vessel simulation section are sealingly connected with the corresponding ports of the kidney simulation part, the liver simulation part and the gastrointestinal simulation part of the organ simulation unit, and the output end of the branch pipeline of the peripheral blood vessel simulation section is sealingly connected with the input end of the vena cava simulation section. The output end of the vena cava simulation section is sealingly connected with the right heart input end of the heart simulation unit. One end of the pulmonary vein simulation section is sealingly connected with the output end of the lung simulation part, and the other end of the pulmonary vein simulation section is sealingly connected with the left heart input end of the heart simulation unit.
4. The heart and blood circulation dynamic teaching model according to claim 3, characterized in that, The one-way control component is provided with at least four. The first one-way control component is sealingly installed at the connecting port of the aorta simulation section and the left heart output end of the heart simulation unit, one end of which is in butt joint with the left heart chamber port of the heart simulation unit, and the other end is in butt joint with the port of the aorta simulation section; The second one-way control component is sealingly installed at the connecting port of the pulmonary artery simulation section and the right heart output end of the heart simulation unit, one end of which is in butt joint with the right heart chamber port of the heart simulation unit, and the other end is in butt joint with the port of the pulmonary artery simulation section; The third one-way control component is sealingly installed at the connecting port of the pulmonary vein simulation section and the left heart input end of the heart simulation unit, one end of which is in butt joint with the port of the pulmonary vein simulation section, and the other end is in butt joint with the left heart chamber port of the heart simulation unit; The fourth one-way control component is sealingly installed at the connecting port of the vena cava simulation section and the right heart input end of the heart simulation unit, one end of which is in butt joint with the port of the vena cava simulation section, and the other end is in butt joint with the right heart chamber port of the heart simulation unit.
5. The heart and blood circulation dynamic teaching model according to claim 1, characterized in that, The input end of the circulation driving unit is sealingly communicated with one section of the pipeline of the blood vessel simulation unit, and the output end of the circulation driving unit is sealingly communicated with another section of the pipeline of the blood vessel simulation unit.
6. The heart and blood circulation dynamic teaching model according to claim 1, characterized in that, The overall shape of the model is a rectangular transparent cavity; The heart simulation unit, the organ simulation unit, the circulation driving unit and the control unit are all integrally installed on the inner wall of the rectangular transparent cavity, and the sound box is fixed on one side of the rectangular transparent cavity.
7. The heart and blood circulation dynamic teaching model according to claim 1, characterized in that, The sound box is provided with an audio module for simulating the sound of human heartbeat, the audio module is connected with the control unit, the control unit triggers the audio module to synchronously play the sound of heartbeat by detecting the feedback signal of the contraction action of the heart simulation unit, the loudness of the sound of heartbeat is synchronously adjusted according to the contraction frequency of the heart simulation unit, and the higher the frequency of the sound of heartbeat, the louder the sound box, so as to match the sound of heartbeat in different states of human body.
8. The heart and blood circulation dynamic teaching model according to claim 1, characterized in that, The flexible pipeline of the blood vessel simulation unit is made of temperature-sensitive safe and non-toxic flexible material, the inner diameter of the pipeline is contracted to 70%-80% of the original size in cold environment simulation, and the inner diameter of the pipeline is expanded to 120%-130% of the original size in hot environment simulation; The organ simulation unit is matched with the simplified structure of the corresponding human organ.
9. The heart and blood circulation dynamic teaching model according to claim 1, characterized in that, The control unit comprises a rhythm control component, a power driving component and a state adjusting module; The state adjusting module is electrically connected with the rhythm control component and is used for inputting the instructions of different activity states and environmental temperatures of human body; The activity states of human body include rest, normal walking and exercise, and the environmental temperatures include cold and hot. The rhythm control component is connected with the power driving component, the power driving component is in transmission connection with the heart simulation unit, and different parameters are set according to the instructions.
10. The heart and blood circulation dynamic teaching model according to claim 1, characterized in that, The organ simulation unit at least comprises one or more of a lung simulation piece, a kidney simulation piece, a liver simulation piece and a gastrointestinal simulation piece. Each simulation part is connected to the heart simulation unit through a corresponding branch pipeline of the blood vessel simulation unit, and is distributed around the heart simulation unit according to the relative position of the human coronary surface; and the flow of the branch pipeline of the blood vessel simulation unit is synchronously adjusted according to the activity state and the environmental temperature parameter set by the control unit, that is, the higher the activity intensity and the more extreme the environmental temperature, the greater the flow of the branch pipeline.