Swan-Ganz floating conduit teaching practice system based on learning effect model

Abstract

The invention discloses a Swan-Ganz floating conduit teaching practice system based on a learning effect model. The Swan-Ganz floating conduit teaching practice system comprises a human body model and a sensor system. The human body model comprises heart components (including superior vena cava, inferior vena cava, right atrium, right ventricle and pulmonary artery) and vascular pathways (including femoral vein, subclavian vein and internal jugular vein). The sensor system is placed in the human body model and comprises an infrared sensor or a pressure sensor, and the infrared sensor or the pressure sensor is arranged in a signal jump point position in the human body model. The specific positions are the junction of the superior vena cava and the right atrium, the junction of the inferior vena cava and the right atrium, the junction of the right atrium and the right ventricle, the junction of the right ventricle and the pulmonary artery and the incarceration of the pulmonary capillary; the blood vessel access is connected with a blood circulation simulation system. By means of the built-in sensor system, the position change of the floating catheter in the blood vessel and the heart can be captured, and position change information can be converted into corresponding physiological pressure data.

Description

Technical Field

[0001] The present invention is applied in medical schools, clinical medicine and nursing operations, and specifically relates to a Swan-Ganz floating catheter teaching and training system based on a learning effect model. Background Art

[0002] In 2010, someone designed a Swan-Ganz floating catheter teaching aid for peripheral blood vessels; in 2021, someone designed a teaching aid model for catheterization through the internal jugular vein. The former is only used as a puncture model, and cannot display the pressure value change curve during the catheterization process, resulting in the inability to teach intuitively. It is limited to the demonstration and explanation of the instructor, lacking real-time feedback during the students' independent training process. At the same time, there is a lack of demonstration of the occurrence and handling of special emergency events during the catheterization process, making it difficult for students to fully practice, unable to get real-time feedback, and lacking simulation of emergency situations that may occur during the catheterization process. Based on the learning effect model theory proposed by Edgar Dale in 1946, the "demonstration" that previous technologies can provide allows students to gain 30% of the content, which is far lower than the 75% absorption rate that "practice" can bring. Although the latter solves the problems of the former, allowing the instructor to explain to students by using handheld cards, this method cannot allow students to feel the waveform changes during practice.

[0003] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a Swan-Ganz floating catheter teaching and training system based on a learning effect model. The system informatizes the teaching model and gives the learning and training process a real-time feedback function by optimizing the internal structure of the human body model and building a teaching management platform.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A Swan-Ganz floating catheter teaching and training system based on a learning effect model includes a human body model and a sensor system. The human body model includes heart components and vascular pathways, the heart components include the superior vena cava, the inferior vena cava, the right atrium, the right ventricle, and the pulmonary artery, and the vascular pathways include the femoral vein, the subclavian vein, and the internal jugular vein. The sensor system is placed in the human body model, and the sensor system includes an infrared sensor or a pressure sensor, and the infrared sensor or the pressure sensor is built into the human body model at the signal jump point.

[0007] Preferably, the human body model is equipped with a blood circulation simulation system.

[0008] Furthermore, the infrared sensor or pressure sensor is arranged at the junction of the superior vena cava and the right atrium, the junction of the inferior vena cava and the right atrium, the junction of the right atrium and the right ventricle, the junction of the right ventricle and the pulmonary artery, and the pulmonary capillary entrapment.

[0009] Preferably, when the sensor system includes a pressure sensor, it also includes a mechanical device, which is placed in a human body model, penetrates a blood vessel and is placed next to the pressure sensor. The mechanical device is in the form of a flat rectangular parallelepiped with raised portions at both ends, one end of which is placed at the proximal end of the blood vessel and the other end of which is placed at the distal end of the blood vessel. When the proximal end of the blood vessel is touched and pressed down, the mechanical device drives the distal raised portion to coincide with the sensing surface of the pressure sensor.

[0010] Preferably, the inner walls of the right atrium and the right ventricle are composed of pressure sensors, and the pressure sensors record pressure information.

[0011] Furthermore, it also includes an external receiving device, which is used for remote connection.

[0012] Furthermore, it also includes an adjustable bracket and a support table: the adjustable bracket is used to support the human body model and adjust the patient's position during the simulation of catheterization; the fixed pressure pump is placed in the support table.

[0013] Furthermore, it also includes a demonstration and training record management platform system, which includes a waveform display unit and a demonstration and training switching unit.

[0014] Preferably, the human body model is also equipped with a built-in miniature camera, which captures the entry length of the catheter. The teaching and training record management platform system also includes a visual anatomical display unit and a recording unit.

[0015] Preferably, the teaching and training record management platform system is displayed through an interface, and the interface display is divided into the following three modules: the first module is an "oscilloscope" interface, which can be used to implement a waveform display unit and a teaching and training switching unit, and the teaching and training switching unit can adjust the teaching mode and the learning and training mode;

[0016] The second module is the "record" interface, which is used to implement the record unit and is used for learning and practice records;

[0017] The third module is the "My" interface, which is used for teacher login, function problem feedback, and page personalization design.

[0018] Beneficial technical effects:

[0019] The present invention can capture the position changes of the Swan-Ganz floating catheter in the blood vessels and the heart through the built-in sensor system. The position change information will be immediately converted into corresponding physiological pressure data. It has highly simulated simulation capabilities and real-time feedback mechanisms, and can feedback the real pressure waveform through programming and simulation technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the human body model and the vascular system of the present invention.

[0022] Figure 2 Schematic diagram of the heart chamber of the present invention.

[0023] Figure 3 It is the positioning diagram of the infrared sensor and the pressure sensor of the present invention.

[0024] Figure 4 It is the right atrial pressure waveform diagram of the present invention.

[0025] Figure 5 It is the right ventricular pressure waveform diagram of the present invention.

[0026] Figure 6 It is the pulmonary artery pressure waveform diagram of the present invention.

[0027] Figure 7 It is the pulmonary capillary wedge pressure map of the present invention.

[0028] Figure 8 It is an interface diagram of the teaching and training record management platform system of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] Reference Figure 1-Figure 2As shown, a Swan-Ganz floating catheter teaching and training system based on a learning effect model includes a human body model and a sensor system. The human body model includes heart components and vascular pathways, wherein the heart components include the superior vena cava (2112.1), the inferior vena cava (2112.2), the right atrium (2112.3), the right ventricle (2112.4), the pulmonary artery (2112.5), and the pulmonary capillaries (2112.6); the vascular pathways include the femoral vein, the subclavian vein, and the internal jugular vein, which are three blood vessels that can be punctured and inserted by a conventional Swan-Ganz floating catheter. The sensor system is placed in the human body model, and the sensor system includes an infrared sensor and a pressure sensor, and the infrared sensor or the pressure sensor is built into the signal jump point in the human body model.

[0032] Reference Figure 3 As shown, in this embodiment, infrared sensors or pressure sensors are arranged at the junction of the superior vena cava and the right atrium (2151.1.1), the junction of the inferior vena cava and the right atrium (2151.1.2), the junction of the right atrium and the right ventricle (2151.2), the junction of the right ventricle and the pulmonary artery (2151.3), and the pulmonary capillary entrapment (2151.4).

[0033] The main part of the human body model is made of silicone and other materials and is formed in one piece. It can simulate real treatment scenarios for medical students. At the same time, it can automatically recover after skin dilation and puncture with a conventional Swan-Ganz floating catheter and can be used multiple times.

[0034] The vascular access is connected to a blood circulation simulation system, which includes a fixed pressure pump and a water tank. The fixed pressure pump controls the pressure, and the water tank is equipped to replenish "blood". The basic pressure value is 40-120mmH2O, and the pressure can be adjusted to simulate the puncture process under certain disease conditions, such as pulmonary hypertension and hypertension.

[0035] When the sensor system includes a pressure sensor, it also includes a mechanical device. The mechanical device is placed in a human body model, penetrates a blood vessel and is placed next to the pressure sensor. The mechanical device is in the form of a flat rectangular parallelepiped with raised parts at both ends. One end is placed at the proximal end of the blood vessel and the other end is placed at the distal end of the blood vessel. When the proximal end of the blood vessel is touched and pressed down, the mechanical device drives the distal raised part to match the sensing surface of the pressure sensor, and the pressure sensor senses the pressure signal.

[0036] The infrared sensor is a ring-shaped infrared sensor.

[0037] During use, when the catheter passes through a signal jump point, such as from the vein to the right atrium, the infrared sensor placed at the junction of the superior and inferior vena cava and the right atrium (2151.1.1) senses the passage of the Swan-Ganz floating catheter, and the infrared sensor outputs a level signal to the microcontroller. The microcontroller outputs a corresponding pressure waveform based on the input level signal. The corresponding relationship between the level signal and the pressure waveform is pre-set in the microcontroller through a program, thereby simulating the different pressure states of the floating catheter entering the right atrium, right ventricle, pulmonary artery, and pulmonary capillaries.

[0038] At the same time, the catheter passes through one end of the touching mechanical device, and the other end of the mechanical device triggers the pressure sensor to form a level signal output to the single-chip microcomputer. The single-chip microcomputer outputs the corresponding pressure waveform according to the input level signal. The correspondence between the level signal and the pressure waveform is pre-set in the single-chip microcomputer through the program, simulating the different pressure states of the floating catheter entering the right atrium, right ventricle, pulmonary artery and pulmonary artery incarceration. At the same time, the inner walls of the right atrium and right ventricle are composed of pressure sensors, and the pressure sensors record pressure information, thereby simulating the situation of atrial premature beats and ventricular fibrillation when hitting the wall in a real scene, and displaying the information related to atrial premature beats and ventricular fibrillation on the teaching and training record management platform for teachers to teach.

[0039] The present invention also includes an adjustable bracket and a support table: the adjustable bracket is used to support the human body model and adjust the patient's position during the simulation of catheter placement.

[0040] The rated pressure pump is placed in the loading platform.

[0041] Example 2

[0042] It also includes external receiving devices, such as tablet computers, which are used for remote connection to achieve teaching effects at the remote end. Sensors and remote connections are used for signal reception and transmission; they regulate the equipment while recording the students' learning and practice process.

[0043] The waveform data will be transmitted to an external device, such as a tablet, in real time via remote connection technology for students to observe and learn. Students can view the pressure waveform at the location of the catheter in real time during the operation, thereby gaining a deeper understanding of the physiological changes during the catheterization process.

[0044] The present invention also includes a demonstration and training record management platform system, which includes a waveform display unit, a demonstration and training switching unit, a visual anatomy display unit and a recording unit.

[0045] The waveform display unit can display the pressure curves in different heart chambers in real time and intuitively. Figure 4 is the right atrial pressure curve. Figure 5 is the right ventricular pressure curve. Figure 6is the pulmonary artery pressure curve. Figure 7 Pulmonary capillary wedge pressure map.

[0046] In addition to displaying the waveform during catheterization, the teaching and training switching unit can also adjust the mode to show that touching the atrium can induce atrial premature beats, displaying the atrial premature beat waveform; touching the ventricle can induce ventricular fibrillation, displaying the ventricular fibrillation waveform and prompting that defibrillation is needed immediately; different disease states can be simulated by adjusting the pressure of the simulated vein.

[0047] The human body model also has a built-in miniature camera. The visual anatomical display unit can combine digital twin technology to capture the length of the catheter entry through the built-in camera of the model, and then display the vascular and cardiac anatomy on the screen, providing a visual display of the catheter gradually entering the blood vessels, heart chambers, and pulmonary arteries.

[0048] Specifically, when the catheter moves in the vascular pathway and passes through preset sensor points (such as entering the right atrium, right ventricle, pulmonary artery, pulmonary capillary entrapment, etc. from the vein), the camera can recognize the passage of the catheter and trigger the corresponding signal output. Based on these signals, combined with the preset pressure curve data, the physiological pressure waveform matching the current position of the catheter is displayed.

[0049] The recording unit records the total duration of the catheter insertion by the students and the number of times the catheter touches the atria and ventricles during insertion.

[0050] The present invention optimizes the internal structure of the human body model, builds a teaching and training record management platform system, etc., to informatize the teaching model and give the learning and training process a real-time feedback function, so that students can see the real-time feedback waveform changes in the process of full hands-on practice (the catheterization process can also be intuitively seen when using digital twins), and can personally experience the emergency situations that may occur during the catheterization process, thereby improving students' classroom absorption rate.

[0051] Reference Figure 8 The teaching and training record management platform system of the present invention can be displayed through an interface, and the interface display is divided into the following three modules: the first module is an "oscilloscope" interface, which can be used to implement a waveform display unit and a teaching and training switching unit. The teaching and training switching unit can adjust the teaching mode and the learning and training mode;

[0052] The second module is the "record" interface, which is used to implement the record unit and is used for learning and practice records;

[0053] The third module is the "My" interface, which is used for teacher login, function problem feedback, page personalization design, etc.

[0054] In addition, the system is equipped with a teaching and training record management platform, through which teachers can set different teaching modes, such as simulating the catheterization process under specific disease conditions, to meet various teaching needs. At the same time, the platform will also record the students' operation process, including the total duration of catheterization, the number of times the atria and ventricles are touched, and other key information, so that teachers can evaluate and guide students' operation skills.

[0055] The method of use includes the following steps:

[0056] 1. Adjust the mannequin to a suitable position using the adjustable bracket.

[0057] 2. Under the guidance of the teacher, use the Swan-Ganz floating catheter to perform puncture and placement operations on the vascular access (femoral vein, internal jugular vein, and subclavian vein) on the model.

[0058] 3. Observe the real-time feedback pressure waveform displayed on an external device (such as a tablet computer) and understand the position and physiological changes during the catheterization process based on the waveform changes.

[0059] 4. Teachers can set different teaching modes according to their needs, and record and analyze students' operation process through the demonstration and training record management platform.

[0060] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A Swan-Ganz floating catheter teaching and training system based on a learning effect model, comprising a human body model and a sensor system; characterized in that: The human body model includes heart components and vascular pathways. The heart components include the superior vena cava, the inferior vena cava, the right atrium, the right ventricle, and the pulmonary artery. The vascular pathways include the femoral vein, the subclavian vein, and the internal jugular vein. The sensor system includes an infrared sensor or a pressure sensor. The infrared sensor or the pressure sensor is built into the human body model at a signal jump point.

2. The Swan-Ganz floating catheter teaching and training system based on the learning effect model according to claim 1 is characterized in that: The human body model is provided with a blood circulation simulation system.

3. The Swan-Ganz floating catheter teaching and training system based on the learning effect model according to claim 2 is characterized in that: The infrared sensor or pressure sensor is arranged at the junction of the superior vena cava and the right atrium, the junction of the inferior vena cava and the right atrium, the junction of the right atrium and the right ventricle, the junction of the right ventricle and the pulmonary artery, and the pulmonary capillary entrapment.

4. The Swan-Ganz floating catheter teaching and training system based on the learning effect model according to claim 2 is characterized in that: When the sensor system includes a pressure sensor, it also includes a mechanical device. The mechanical device is placed in a human body model, penetrates a blood vessel and is placed next to the pressure sensor. The mechanical device is in the form of a flat rectangular parallelepiped with raised parts at both ends. One end is placed at the proximal end of the blood vessel and the other end is placed at the distal end of the blood vessel. When the proximal end of the blood vessel is touched and pressed down, the mechanical device drives the distal raised part to coincide with the sensing surface of the pressure sensor.

5. The Swan-Ganz floating catheter teaching and training system based on the learning effect model according to claim 3 is characterized in that: The inner walls of the right atrium and the right ventricle are composed of pressure sensors, and the pressure sensors record pressure information.

6. The Swan-Ganz floating catheter teaching and training system based on the learning effect model according to claim 1, characterized in that: The invention also comprises an external receiving device, wherein the external receiving device is used for remote connection.

7. The Swan-Ganz floating catheter teaching and training system based on the learning effect model according to claim 1, characterized in that: It also includes an adjustable bracket and a platform: the adjustable bracket is used to support the human body model and adjust the patient's position during the simulation of catheterization; the fixed pressure pump is placed in the platform.

8. The Swan-Ganz floating catheter teaching and training system based on the learning effect model according to claim 1, characterized in that: It also includes a demonstration and teaching training record management platform system, which includes a waveform display unit and a demonstration and teaching training switching unit.

9. The Swan-Ganz floating catheter teaching and training system based on the learning effect model according to claim 8, characterized in that: The human body model is also equipped with a built-in micro camera, which captures the entry length of the catheter. The teaching and training record management platform system also includes a visual anatomical display unit and a recording unit.

10. The Swan-Ganz floating catheter teaching and training system based on the learning effect model according to claim 9, characterized in that: The teaching and training record management platform system can be displayed through an interface, and the interface display is divided into the following three modules: the first module is an "oscilloscope interface", which can be used to implement a waveform display unit and a teaching and training switching unit, and the teaching and training switching unit can adjust the teaching mode and the learning and training mode; The second module is the "record" interface, which is used to implement the record unit and to record learning and practice; The third module is the "My" interface, which is used for teacher login, function problem feedback, and page personalization design.

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