CN113539040A - Cardiovascular blood flow dynamics simulation method and system - Google Patents
Cardiovascular blood flow dynamics simulation method and system Download PDFInfo
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Abstract
The application discloses a cardiovascular blood flow dynamics simulation method and system. The cardiovascular blood flow dynamics simulation system comprises a human body model, parameter measuring equipment and terminal equipment, wherein the human body model comprises a simulation heart, a driving structure, a controller and an arteriovenous simulation assembly, the simulation heart is provided with a liquid inlet which is convenient to open and close, the arteriovenous simulation assembly is provided with a liquid flow channel, the liquid flow channel is communicated with an inner cavity of the simulation heart, and the controller is used for controlling the driving structure to drive the simulation heart to contract and relax so that liquid in the simulation heart circularly flows in the arteriovenous simulation assembly; the method comprises the following steps: the parameter measuring equipment acquires a detection signal of the human body model and calculates the hemodynamic parameter of the human body model according to the detection signal; transmitting the hemodynamic parameters of the human body model to the terminal equipment; the terminal device displays the detection parameter information of the human body model, including the hemodynamic parameters of the human body model.
Description
Technical Field
The invention relates to the technical field of hemodynamics, in particular to a cardiovascular hemodynamics simulation method and system.
Background
In the medical field, hemodynamics is science for researching the flow of blood in the cardiovascular system, and has the promotion effect on cardiovascular and cerebrovascular operations, interventional therapy and the like.
When various kinds of teaching relating to the blood flow dynamics are performed, a human body model is generally used for demonstrating operation actions, such as cardiopulmonary resuscitation and the like, but the blood flow dynamics involve many parameters of cardiovascular blood flow, and the teaching demonstration cannot be intuitively performed.
Disclosure of Invention
The application provides a cardiovascular hemodynamic simulation method and system.
In a first aspect, a cardiovascular hemodynamic simulation method is provided, and is applied to a cardiovascular hemodynamic simulation system, where the cardiovascular hemodynamic simulation system includes a human body model, a parameter measurement device, and a terminal device, where the human body model includes a simulated heart, a driving structure, a controller, and an arteriovenous simulation module, the simulated heart is provided with a liquid inlet which is convenient to open and close, the arteriovenous simulation module has a liquid flow channel, the liquid flow channel is communicated with an inner cavity of the simulated heart, and the controller is configured to control the driving structure to drive the simulated heart to contract and relax, so that liquid in the simulated heart circulates and flows inside the arteriovenous simulation module;
the method comprises the following steps:
the parameter measuring equipment acquires a detection signal of the human body model and calculates the hemodynamic parameter of the human body model according to the detection signal;
transmitting hemodynamic parameters of the mannequin to the terminal device;
and the terminal equipment displays the detection parameter information of the human body model, wherein the detection parameter information comprises the hemodynamic parameters of the human body model.
In a second aspect, a cardiovascular hemodynamic simulation system is provided, which comprises a human body model, a parameter measurement device and a terminal device;
the human body model comprises a simulated heart, a driving structure, a controller and an arteriovenous simulation assembly, wherein the simulated heart is provided with a liquid inlet which is convenient to open and close, the arteriovenous simulation assembly is provided with a liquid flow channel, the liquid flow channel is communicated with an inner cavity of the simulated heart, and the controller is used for controlling the driving structure to drive the simulated heart to contract and relax so that liquid in the simulated heart circularly flows in the arteriovenous simulation assembly;
the parameter measuring equipment is used for acquiring a detection signal of the human body model, calculating a hemodynamic parameter of the human body model according to the detection signal, and transmitting the hemodynamic parameter of the human body model to the terminal equipment;
the terminal device is used for receiving the hemodynamic parameters from the parameter measuring device and displaying detection parameter information of the human body model, wherein the parameter information comprises the hemodynamic parameters of the human body model.
The cardiovascular blood flow dynamics simulation system comprises a human body model, parameter measuring equipment and terminal equipment, wherein the human body model comprises a simulation heart, a driving structure, a controller and an arteriovenous simulation assembly, the simulation heart is provided with a liquid inlet which is convenient to open and close, the arteriovenous simulation assembly is provided with a liquid flow channel, the liquid flow channel is communicated with an inner cavity of the simulation heart, and the controller is used for controlling the driving structure to drive the simulation heart to contract and relax so that liquid in the simulation heart flows in the arteriovenous simulation assembly in an internal circulation mode; the detection signal of the human body model can be collected through the parameter measurement equipment, and the hemodynamic parameter of the human body model is calculated according to the detection signal; transmitting the hemodynamic parameters of the human body model to the terminal equipment; the terminal equipment displays detection parameter information of the human body model, including hemodynamic parameters of the human body model, wherein the human body model can dilate or contract a simulated heart through the driving structure under the control of the controller, so that liquid in the simulated heart simulates blood circulation flowing in blood vessels of a real human body in the arteriovenous simulation assembly, the human body model is subjected to hemodynamic parameter detection, various processing of the human body model can be combined to detect various parameters in real time, the teaching demonstration purpose in the aspect of cardiovascular hemodynamic is achieved, and the hemodynamic parameter change in various simulation experiment processes can be monitored clearly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a schematic flow chart of a cardiovascular hemodynamic simulation method according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a cardiovascular hemodynamic simulation system according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a passive leg raising test provided in the embodiment of the present application;
fig. 4 is a schematic diagram of another cardiovascular hemodynamic simulation system provided by an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The hemodynamics or hemodynamics involved in the embodiments of the present application is a physical expression of the movement of blood in the circulatory system, and the equilibrium state of blood in the circulatory system is observed and studied through the analysis of various factors; hemodynamic detection (monitoring) refers to the quantitative, dynamic, continuous measurement and analysis of the laws of blood movement in the circulatory system according to laws of physics, combined with physiological and pathological concepts, and the feedback of these data for understanding the development of the disease and for guidance of clinical treatments.
The embodiments of the present application will be described below with reference to the drawings.
Referring to fig. 1, fig. 1 is a schematic flow chart of a cardiovascular hemodynamic simulation method according to an embodiment of the present disclosure. The method can comprise the following steps:
101. the parameter measuring equipment collects detection signals of a human body model, and calculates the hemodynamic parameters of the human body model according to the detection signals.
The cardiovascular hemodynamic simulation method in the embodiment of the present application may be applied to a cardiovascular hemodynamic simulation system, such as a schematic diagram of the cardiovascular hemodynamic simulation system shown in fig. 2, where the cardiovascular hemodynamic simulation system 200 includes a human body model 210, a parameter measurement device 220, and a terminal device 230, the parameter measurement device 220 may detect and obtain hemodynamic parameters of a human body, and in the present application, the parameter measurement device 220 is connected with the human body model to detect the hemodynamic parameters of the human body model. The parameter measurement device 220 may be connected to the terminal device 230 by a wire for data transmission communication, or may be connected wirelessly. The terminal device 230 may also communicate with a variety of different parameter measurement devices to obtain different measurement parameters. The terminal device 230 is mainly used for receiving data of the parameter measuring device 220, displaying and analyzing the detection parameter information of the human body model, and facilitating user interaction.
In an alternative embodiment, the parameter measuring device includes an input electrode, and the parameter measuring device acquires a detection signal of the human body model and calculates a hemodynamic parameter of the human body model according to the detection signal, including:
the input electrode is contacted with the human body model to apply an excitation electric signal;
detecting a response electric signal generated at both ends of the input electrode as the detection signal;
and calculating to obtain the simulated blood flow resistance according to the excitation electric signal and the detection signal.
Specifically, the shell of the human body model can be made of a conductor substance for simulating human skin, and the parameter measuring equipment can be contacted with the human body model through the input electrode, and is similar to the detection of a real person for signal acquisition. The parameter measurement device includes a controller that controls the determination of the detected hemodynamic parameter by applying an excitation electrical signal across the input electrodes and measuring a response electrical signal. One of the excitation electric signal and the detection signal is a voltage signal, and the other one is a current signal, so that the simulated blood flow resistance can be calculated in a manner similar to the calculation of the resistance.
In one embodiment, the excitation electrical signal is a constant current/voltage signal and the response electrical signal is a voltage/current signal;
the calculating of the simulated blood flow resistance from the excitation electrical signal and the response electrical signal includes:
calculating to obtain an impedance signal according to the excitation electric signal and the response electric signal;
and determining the blood flow resistance corresponding to the impedance signal as the simulated blood flow resistance according to the corresponding relation between the preset impedance signal and the blood flow resistance.
Specifically, the parameter measuring device may preset a corresponding relationship between the impedance signal and the blood flow resistance, so that the impedance signal may be obtained by calculation according to the given excitation electrical signal and the corresponding response electrical signal during detection, and then the blood flow resistance corresponding to the obtained impedance signal may be determined according to the preset corresponding relationship between the impedance signal and the blood flow resistance, that is, the current simulated blood flow resistance may be measured.
For example, the controller of the parameter measuring device may control the multi-frequency signal generating circuit to generate an ac voltage signal, and the voltage signal is converted into a corresponding excitation electrical signal, such as a constant current signal, by the signal converting circuit. The excitation electric signal is applied to a human body model (biological resistor), voltage signals of the biological resistors at two ends to be detected are detected, the obtained voltage signals are subjected to filtering and amplification processing to obtain two rectangular wave voltage signals, then orthogonal decomposition calculation is carried out to obtain two corresponding signals, then digital signals are obtained through A/D (analog to digital) conversion, and finally the obtained digital signals are subjected to inverse trigonometric function calculation to obtain the impedance information.
The parameter measuring device may periodically perform detection and calculation to obtain the simulated blood flow resistance, may perform storage, and may transmit to the terminal device.
Optionally, the parameter measuring device includes a signal amplifying module;
after detecting the response electrical signal generated at both ends of the input electrode, before calculating and obtaining the simulated blood flow resistance according to the excitation electrical signal and the response electrical signal, the method further comprises:
and amplifying the response electric signal through the signal amplification module.
Specifically, the detected response electric signal can be amplified through the signal amplification module, so that the purpose of more accurate measurement is achieved.
102. The parameter measuring device transmits the hemodynamic parameters of the human body model to the terminal device.
103. And the terminal equipment displays the detection parameter information of the human body model, wherein the detection parameter information comprises the hemodynamic parameters of the human body model.
The terminal device may display various detected parameter information of the manikin, including hemodynamic parameters measured by the parameter measuring device, such as the aforementioned simulated blood flow resistance. Optionally, the detection parameter information may also be other index information calculated according to the received data.
In one embodiment, the detected parameter information of the human body model further includes a simulated blood flow, and the cardiovascular hemodynamic simulation system further includes a blood pressure measuring device; the method further comprises the following steps:
the blood pressure measuring equipment detects the simulated arterial blood pressure of the human body model and transmits the simulated arterial blood pressure of the human body model to the terminal equipment;
and the terminal equipment calculates and obtains the simulated blood flow of the human body model according to the simulated arterial blood pressure and the simulated blood flow resistance.
The blood flow volume referred to in the embodiments of the present application is also called the volume velocity of blood flow. Refers to the amount of blood flowing through a section of a blood vessel per unit time, often expressed in milliliters per minute or liters per minute. The magnitude of blood flow is proportional to the pressure difference across the blood vessel and inversely proportional to the resistance of the blood vessel to blood flow.
The blood pressure measuring device is a device capable of measuring the blood pressure of the human body, such as a blood pressure monitor, and the terminal device may obtain the simulated arterial blood pressure of the human body model measured by the blood pressure measuring device, and calculate the simulated blood flow volume according to the simulated arterial blood pressure and the simulated blood flow resistance because the blood pressure is the blood flow volume × the blood flow resistance.
Further optionally, the detection parameter information of the human body model further includes a simulated blood flow velocity; the method further comprises the following steps:
and the terminal equipment calculates and obtains the simulated blood flow velocity according to the simulated blood flow volume and a preset cross section area of the liquid flow channel.
Blood flow velocity is usually expressed as mean linear velocity in mm/s (millimeters per second), which refers to the average velocity of a plasmid (e.g., red blood cells) flowing in a blood vessel along a straight line, not the difference in flow velocity when it is constricted or relaxed. The mean linear velocity (V) of the blood flow is proportional to the blood flow (Q) and inversely proportional to the total area (a) of the vessel cross section. The cross section area of the liquid flow passage in the human body model can be preset in the terminal equipment, so that the simulated blood flow velocity can be obtained through calculation according to the simulated blood flow volume and the preset cross section area of the liquid flow passage.
In one embodiment, the human body model in the cardiovascular hemodynamic simulation system of the present application has a unique structure in order to accurately implement the cardiovascular hemodynamic simulation method. The human body model comprises a simulated heart, a driving structure, a controller and an arteriovenous simulation assembly, wherein the simulated heart is provided with a liquid inlet which is convenient to open and close, the arteriovenous simulation assembly is provided with a liquid flow channel, the liquid flow channel is communicated with an inner cavity of the simulated heart, and the controller is used for controlling the driving structure to drive the simulated heart to contract and relax so that liquid in the simulated heart circularly flows in the arteriovenous simulation assembly.
The controller can control the driving structure to drive the simulation of the systole and diastole according to a preset program, such as simulating the systole and diastole of a real human body, and the program can be adjusted as required to realize the systole and diastole with different degrees and different frequencies.
The liquid flow channel of the artery and vein simulation component simulates an aorta blood vessel which is communicated with the heart in a human body, and the distribution of the liquid flow channel in the human body model can be set according to the distribution of a real human body.
Optionally, a transverse partition plate and a vertical partition plate which are arranged in a crossed manner are arranged in the inner cavity of the simulated heart, the transverse partition plate and the vertical partition plate divide the inner cavity into a left front cavity, a left rear cavity, a right front cavity and a right rear cavity, the left front cavity is communicated with the left rear cavity in a single direction, and the right front cavity is communicated with the right rear cavity in a single direction.
In an embodiment, wear to be equipped with the check valve on the cross slab that is located between left front chamber and the left back chamber for left front chamber and left back chamber intercommunication, further, through setting up this check valve, make the inside liquid in left front chamber can get into left back chamber, and the liquid in left back chamber can not get into left front chamber through the check valve. The transverse partition plate between the right front cavity and the right rear cavity is also provided with a one-way valve in a penetrating mode, so that the right front cavity can be communicated with the right rear cavity, furthermore, liquid in the right front cavity enters the right rear cavity through the one-way valve, and the liquid in the right rear cavity cannot enter the right front cavity through the one-way valve.
It should be noted that the left front cavity and the right front cavity can be respectively provided with a liquid inlet which is convenient to open and close, and liquid can be injected into the left front cavity and the right front cavity through the liquid inlets. Through extrudeing left front chamber and right front chamber, can extrude liquid respectively to left back chamber and right back chamber in.
The simulated heart 2 is divided into four regions by arranging the transverse partition plate and the vertical partition plate, and the four regions respectively correspond to the left ventricle, the right ventricle and the left atrium of the heart. By arranging the one-way valve, the liquid in the left front cavity flows to the left back cavity in a one-way mode, and the liquid in the right front cavity flows to the right back cavity in a one-way mode. Through the arrangement, the simulated heart is closer to the structure of the real human heart, and the diastole and the compression are realized.
Above-mentioned manikin can transparent setting to show inner structure, wherein the liquid runner also can transparent setting, selected liquid can be opaque colour, for example red simulation blood colour, thereby can demonstrate the liquid flow state more vividly, the teaching observation of being convenient for.
Optionally, the manikin further comprises a rotating shaft mechanism for adjusting an angle formed by the upper half body and the lower half body of the manikin.
By means of the spindle mechanism, the manikin can be changed in posture, such as lying down or sitting up. In this case, a passive leg-lifting test can be performed using the manikin. In general, the passive leg-lift test is performed by tilting the bed so that the patient's torso remains at 45 ° semi-supine on the tilted bed, and then keeping the hip in flexion by 45 ° in order to increase subsequent volume transfer. The test is an emerging method for accurately evaluating liquid management, has high sensitivity and specificity for capacity reactivity prediction, is convenient to operate, has reliable results, is an effective alternative method for a rapid liquid replacement test, and is a first-choice method for emergency treatment of circulatory failure or hypotension. The method is mainly used for patients with high clinical suspicious hypovolemic shock, such as patients with severe trauma and excessive blood loss, and postoperative patients who recover or income ICU at early stage of sepsis. The test should be performed with simultaneous application of drugs that enhance sympathetic tone or vasoactivity, and with subsequent timely, effective, and rational fluid replacement therapy.
The cardiovascular blood flow dynamics simulation method in the embodiment of the application is suitable for a simulation process of a passive leg lifting test, in the passive leg lifting test, when a patient changes from a half-sitting position (30-45 degrees) to a horizontal position and lifts the lower limb by 30-45 degrees, some blood per se flows back to the heart, so that the preload of the patient is increased, and the rapid fluid infusion test is simulated.
Fig. 3 is a schematic diagram of a passive leg raising test provided in the present application. As shown in fig. 3, during the test, the patient is initially in the half-seated position (1), then the patient is raised from the half-seated position to the recumbent position by means of the bed tail, and the lower limb is raised by 30-45 degrees (2), and the cardiac output increase caused by the passive leg raising test is time-efficient and usually lasts for one minute, and the output (CO) measurement is completed within one minute. After the test is finished, the patient is returned to half-seated position (1) and it is clear that patient CO is also returned to the base value.
The posture of the human body model can be changed according to the steps through the rotating shaft mechanism, the human body model is used for passive leg lifting test simulation, and the hemodynamic parameters, such as CO, of the human body model are continuously monitored in the process.
Optionally, the manikin can also be used for carrying out a simulated fluid infusion test. The clinical fluid infusion test is mainly to observe the change of blood pressure and central venous pressure through rapid venous fluid infusion so as to judge whether the effective circulating blood volume of a patient is insufficient. The shell of the manikin can be made of a conductive material, such as rubber, which simulates human skin, and an injector can be used to inject a simulated vein through the shell to simulate rapid intravenous infusion and to detect changes in the manikin's blood pressure and central venous pressure. If the blood pressure rises and the central venous pressure does not change, it indicates that the blood volume is insufficient, and if the blood pressure rises without changing, it indicates that the cardiac function is insufficient.
Optionally, simulation of operations such as cardiopulmonary resuscitation can be realized based on the simulated heart and the human body model, and measurement of various parameters in the process can be realized by combining detection equipment, so that teaching and reference are facilitated.
In order to better achieve the purpose of injection or demonstration, the material and color of the shell (simulated skin), the simulated heart, the simulated blood vessel, etc. of the human body model can be selected according to the requirement, which is not limited in the embodiments of the present application.
The embodiment of the application combines various processing real-time detection parameters of the human body model to achieve the teaching demonstration purpose in the aspect of cardiovascular hemodynamics, so that the hemodynamics parameter changes in various simulation experiment processes can be monitored clearly, for example, the passive leg lifting, the fluid infusion test and the like are realized.
Based on the description of the embodiment of the cardiovascular hemodynamic simulation method, the embodiment of the present application further discloses a cardiovascular hemodynamic simulation system. Referring to another schematic diagram of the cardiovascular hemodynamic simulation system shown in fig. 4, a cardiovascular hemodynamic simulation system 400 includes a human body model 410, a parameter measurement device 420 and a terminal device 430; wherein:
the human body model 410 comprises a simulated heart 411, a driving structure 412, a controller 413 and an arteriovenous simulation component 414, wherein the simulated heart 411 is provided with a liquid inlet which is convenient to open and close, the arteriovenous simulation component 414 is provided with a liquid flow passage, the liquid flow passage is communicated with an inner cavity of the simulated heart 411, and the controller 413 is used for controlling the driving structure 412 to drive the simulated heart 411 to contract and relax so that liquid in the simulated heart 411 circularly flows inside the arteriovenous simulation component 414;
the parameter measuring device 420 is configured to acquire a detection signal of the human body model 410, calculate a hemodynamic parameter of the human body model 410 according to the detection signal, and transmit the hemodynamic parameter of the human body model 410 to the terminal device 430;
the terminal device 430 is configured to receive the hemodynamic parameters from the parameter measurement device 420, and display detected parameter information of the human body model 410, where the parameter information includes the hemodynamic parameters of the human body model 410.
Optionally, the cardiovascular hemodynamic simulation system 400 further includes a blood pressure measurement device 440;
the blood pressure measuring device 440 is configured to detect a simulated arterial blood pressure of the human body model 410 and transmit the simulated arterial blood pressure of the human body model 410 to the terminal device 430;
the terminal device 430 is further configured to calculate the simulated blood flow of the human model 410 according to the simulated arterial blood pressure and the simulated blood flow resistance.
According to an embodiment of the present application, the steps involved in the method shown in fig. 1 may be performed by the modules in the cardiovascular hemodynamic simulation system 400 shown in fig. 4, and are not described herein again.
The cardiovascular hemodynamic simulation system 400 in the embodiment of the present application may combine various processing of the human body model 410 to detect various parameters in real time, so as to achieve the purpose of teaching demonstration in the aspect of cardiovascular hemodynamic, and facilitate clear monitoring of hemodynamic parameter changes in various simulation experiment processes, such as passive leg lifting, fluid infusion tests, and the like.
An embodiment of the present application further provides a computer storage medium (Memory), which is a Memory device in an electronic device and is used to store programs and data. It is understood that the computer storage medium herein may include both a built-in storage medium in the electronic device and, of course, an extended storage medium supported by the electronic device. Computer storage media provide storage space that stores an operating system for an electronic device. Also stored in the memory space are one or more instructions, which may be one or more computer programs (including program code), suitable for loading and execution by the processor. The computer storage medium may be a high-speed RAM memory, or may be a non-volatile memory (non-volatile memory), such as at least one disk memory; and optionally at least one computer storage medium located remotely from the processor.
In one embodiment, one or more instructions stored in a computer storage medium may be loaded and executed by a processor to perform the corresponding steps in the above embodiments; in particular implementations, one or more instructions in the computer storage medium may be loaded by the processor and perform any steps of the method shown in fig. 1, which are not described herein again.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the division of the module is only one logical division, and other divisions may be possible in actual implementation, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. The shown or discussed mutual coupling, direct coupling or communication connection may be an indirect coupling or communication connection of devices or modules through some interfaces, and may be in an electrical, mechanical or other form.
Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a read-only memory (ROM), or a Random Access Memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a Digital Versatile Disk (DVD), or a semiconductor medium, such as a Solid State Disk (SSD).
Claims (10)
1. A cardiovascular blood flow dynamics simulation method is characterized by being applied to a cardiovascular blood flow dynamics simulation system, wherein the cardiovascular blood flow dynamics simulation system comprises a human body model, a parameter measurement device and a terminal device, a simulated heart, a driving structure, a controller and an arteriovenous simulation assembly are included in the human body model, the simulated heart is provided with a liquid inlet which is convenient to open and close, the arteriovenous simulation assembly is provided with a liquid flow channel, the liquid flow channel is communicated with an inner cavity of the simulated heart, and the controller is used for controlling the driving structure to drive the simulated heart to contract and relax so that liquid in the simulated heart circularly flows in the arteriovenous simulation assembly;
the method comprises the following steps:
the parameter measuring equipment acquires a detection signal of the human body model and calculates the hemodynamic parameter of the human body model according to the detection signal;
transmitting hemodynamic parameters of the mannequin to the terminal device;
and the terminal equipment displays the detection parameter information of the human body model, wherein the detection parameter information comprises the hemodynamic parameters of the human body model.
2. The cardiovascular hemodynamic simulation method of claim 1, wherein the parametric measurement device comprises an input electrode, the parametric measurement device collects detection signals of the phantom and calculates hemodynamic parameters of the phantom based on the detection signals, comprising:
the input electrode is in contact with the manikin to apply an excitation electrical signal;
detecting a response electric signal generated at both ends of the input electrode as the detection signal;
and calculating to obtain the simulated blood flow resistance according to the excitation electric signal and the detection signal.
3. The cardiovascular hemodynamic simulation method of claim 2, wherein the excitation electrical signal is a constant current/voltage signal and the response electrical signal is a voltage/current signal;
the calculating to obtain the simulated blood flow resistance according to the excitation electric signal and the response electric signal comprises:
calculating according to the excitation electric signal and the response electric signal to obtain an impedance signal;
and determining the blood flow resistance corresponding to the impedance signal as the simulated blood flow resistance according to the preset corresponding relation between the impedance signal and the blood flow resistance.
4. The cardiovascular hemodynamic simulation method of claim 2, wherein the parameter measurement device comprises a signal amplification module; after detecting the response electrical signal generated across the input electrode, the method further comprises, before calculating a simulated blood flow resistance from the excitation electrical signal and the response electrical signal:
and amplifying the response electric signal through the signal amplification module.
5. The cardiovascular hemodynamic simulation method of claim 2, wherein the detected parameter information of the human body model further includes simulated blood flow, the cardiovascular hemodynamic simulation system further includes a blood pressure measurement device; the method further comprises the following steps:
the blood pressure measuring equipment detects the simulated arterial blood pressure of the human body model and transmits the simulated arterial blood pressure of the human body model to the terminal equipment;
and the terminal equipment calculates and obtains the simulated blood flow of the human body model according to the simulated arterial blood pressure and the simulated blood flow resistance.
6. The cardiovascular hemodynamic simulation method of claim 5, wherein the sensed parameter information of the human body model further includes a simulated blood flow velocity; the method further comprises the following steps:
and the terminal equipment calculates and obtains the simulated blood flow velocity according to the simulated blood flow volume and the preset cross-sectional area of the liquid flow channel.
7. The cardiovascular hemodynamic simulation method of any one of claims 1-6, further comprising a rotation axis mechanism within the mannequin, wherein the rotation axis mechanism is configured to adjust an angle between an upper body and a lower body of the mannequin.
8. The cardiovascular hemodynamic simulation method of claim 7, wherein a cross partition and a vertical partition are disposed in an inner cavity of the simulated heart, the cross partition and the vertical partition dividing the inner cavity into a left anterior cavity, a left posterior cavity, a right anterior cavity, and a right posterior cavity, the left anterior cavity being in one-way communication with the left posterior cavity, the right anterior cavity being in one-way communication with the right posterior cavity;
the human body model is arranged transparently.
9. A cardiovascular hemodynamic simulation system is characterized by comprising a human body model, parameter measurement equipment and terminal equipment;
the human body model comprises a simulated heart, a driving structure, a controller and an arteriovenous simulation assembly, wherein the simulated heart is provided with a liquid inlet which is convenient to open and close, the arteriovenous simulation assembly is provided with a liquid flow channel, the liquid flow channel is communicated with an inner cavity of the simulated heart, and the controller is used for controlling the driving structure to drive the simulated heart to contract and relax so that liquid in the simulated heart circularly flows in the arteriovenous simulation assembly;
the parameter measuring equipment is used for acquiring a detection signal of the human body model, calculating a hemodynamic parameter of the human body model according to the detection signal, and transmitting the hemodynamic parameter of the human body model to the terminal equipment;
the terminal device is used for receiving the hemodynamic parameters from the parameter measuring device and displaying detection parameter information of the human body model, wherein the parameter information comprises the hemodynamic parameters of the human body model.
10. The cardiovascular hemodynamic simulation system of claim 9, wherein the cardiovascular hemodynamic simulation system further comprises a blood pressure measurement device;
the blood pressure measuring equipment is used for detecting the simulated arterial blood pressure of the human body model and transmitting the simulated arterial blood pressure of the human body model to the terminal equipment;
the terminal equipment is further used for calculating and obtaining the simulated blood flow of the human body model according to the simulated arterial blood pressure and the simulated blood flow resistance.
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