KR102228314B1 - Simulation system for deforming shape of cardiovascular - Google Patents

Abstract

The cardiovascular shape transformation simulation system of the present invention includes: a site setting unit for setting a site of a cardiovascular disease to be trained or visually expressed for a modeled cardiovascular system; A disease generator configured to transform a shape of a part of the cardiovascular vessel to visually express a cardiovascular disease including an aortic aneurysm, a coronary artery stenosis, or an aortic stenosis in the cardiovascular region set by the site setting unit; A disease treatment unit configured to display a catheter visualized according to an operation or gesture of the trainee so that a trainee can practice treatment or operation of the cardiovascular region deformed by the disease generating unit; A training environment output unit configured to display the cardiovascular disease generated by the site setting unit and the disease generating unit and a treatment state of the cardiovascular disease shown by the disease treatment unit on the AR device worn by the trainee; And a control unit for controlling operations of the region setting unit, the disease generation unit, the disease treatment unit, and the training environment output unit.

Description

Simulation system for deforming shape of cardiovascular}

The present invention relates to a cardiovascular shape transformation simulation system capable of visually expressing various cardiovascular diseases in the case of treating major cardiovascular diseases using a catheter.

Cardiovascular disease refers to diseases that occur in the heart and major arteries. Major diseases include atherosclerosis, coronary artery stenosis, and aortic stenosis.

In the actual medical world, a catheter is a thin tube made by extrusion molding using medical materials, and is used for various functions in the medical field. Depending on the material or method of making, it can be applied in various fields such as cardiovascular system. Among them, the balloon catheter for coronary artery expansion has an inflation balloon formed near the tip of the guide tube inserted into the blood vessel, and fluid is introduced through the conduit connected to the balloon to inflate the balloon. The guide wire, which serves to facilitate and perform the procedure, has a structure built into the conduit.

If a specialist such as a doctor can also practice or train for surgery/treatment for cardiovascular disease, such practice is preceded before the actual surgery, thereby further increasing the actual surgery/treatment success rate.

However, until now, there has been no software that can express variously the onset site of cardiovascular disease, blood vessel morphology, and effects, and present and train surgical and treatment methods accordingly.

The present invention deals with the expression of technology for treating major cardiovascular diseases using a catheter, and in order to present the vision of cardiovascular diseases, the present invention can be mounted on a trainee's head without using a TV or a monitor, which is a general display device, to present the vision. We would like to propose a cardiovascular shape transformation simulation system that can utilize AR devices.

In addition, the present invention is to provide a system capable of providing a sense of immersion capable of real-time interaction between the user and the virtual world in a state in which the user does not recognize that the real and virtual environments are separated by harmonizing the real world and the virtual world well. do.

In particular, it is intended to provide a system for virtually training for actual surgery and treatment by visually expressing the treatment of virtual cardiovascular diseases and diseases using the features of AR technology.

The cardiovascular shape transformation simulation system of the present invention includes: a site setting unit for setting a site of a cardiovascular disease to be trained or visually expressed for a modeled cardiovascular system; A disease generator configured to transform a shape of a part of the cardiovascular vessel to visually express a cardiovascular disease including an aortic aneurysm, a coronary artery stenosis, or an aortic stenosis in the cardiovascular region set by the site setting unit; A disease treatment unit configured to display a catheter visualized according to an operation or gesture of the trainee so that a trainee can practice treatment or operation of the cardiovascular region deformed by the disease generating unit; A training environment output unit configured to display the cardiovascular disease generated by the site setting unit and the disease generating unit and a treatment state of the cardiovascular disease shown by the disease treatment unit on the AR device worn by the trainee; And a control unit for controlling operations of the region setting unit, the disease generation unit, the disease treatment unit, and the training environment output unit.

By the system of the present invention as proposed, it is possible to provide an AR virtual training environment similar to the real one, and by providing such a training environment to the medical industry, it is used for the development of medical technology and is widely beneficial to medical personnel in need of cardiovascular disease treatment training. There is an advantage that can be utilized.

1 is a block diagram showing the configuration of a cardiovascular shape transformation simulation system of the present invention.
2 is a diagram showing a rendering of a cardiovascular system according to an exemplary embodiment of the present invention.
3 is a diagram showing a state in which an object is created and visualized by a part setting unit constituting the system of the present invention.
4 is a diagram showing a process of designating a region or vertex range to generate a disease from among all of the vertices visualized by the region setting unit constituting the system of the present invention.
5 and 6 are diagrams showing a shape change visually expressed when a vascular stenosis disease is generated by a disease generating unit constituting the system of the present invention.
7 to 9 are diagrams showing a process of generating diseases in different regions of the modeled cardiovascular system.
10 is a diagram showing a training process by a trainee by a disease treatment unit constituting the system of the present invention.
11 is a diagram illustrating a visualized state of a trainee when a disease visualized according to training by the disease treatment unit is treated.

Hereinafter, with reference to the accompanying drawings with respect to the present embodiment will be described in detail. However, the scope of the spirit of the invention of this embodiment may be determined from the matters disclosed by this embodiment, and it will be said that the spirit of the invention of this embodiment includes modifications of components with respect to the proposed embodiment.

1 is a block diagram showing the configuration of a cardiovascular shape transformation simulation system of the present invention.

Referring to FIG. 1, the simulation system of the embodiment includes a site setting unit 110 for setting a site of a cardiovascular disease to be trained or visually expressed, and an aortic aneurysm at a cardiovascular site set by the site setting unit 110. The disease generation unit 120 to change the shape of the cardiovascular system so that cardiovascular diseases such as coronary artery stenosis and aortic artery stenosis are visually displayed, and the training of the trainee when training to treat the generated cardiovascular disease The disease treatment unit 130 to visually show the treatment of the cardiovascular disease according to (surgery/treatment practice), the disease generated by the site setting unit and the disease generation unit, and the disease shown by the disease treatment unit. The training environment output unit 140 to display the treatment of the disease on the AR device worn by the trainee, the site setting unit 110, the disease generation unit 120, the disease treatment unit 130, and the training environment output It includes a control unit 100 that controls the operations of the unit 140.

Each configuration constituting the simulation system of the present invention will be described with reference to the accompanying drawings.

First, FIG. 2 is a diagram showing a rendering of a cardiovascular system according to an exemplary embodiment of the present invention.

Cardiovascular modeling is augmented in a medical bed, and the system of the present invention serves to provide the onset and treatment of cardiovascular disease, which is a content delivered to an AR device worn by a trainee. Depending on the embodiment, the rendered image may be not only a still image but also a moving image.

The trainer checks various cardiovascular diseases generated by the system of the present invention through the AR device, and the trainer watches the cardiovascular disease shown by the AR device worn, and treats the cardiovascular disease using the provided disease treatment tool. do.

In the present invention, in order to generate various cardiovascular diseases, a cardiovascular site to generate a disease is selected. The selection criterion is to select the area where the most frequently onset major cardiovascular disease occurs.

The selected cardiovascular disease generation site is expressed in the AR device through the disease generation unit, and the visualization method is output differently depending on the type of disease.

By the region setting unit 110 constituting the system of the present invention, an object may be created and visualized on a vertex of each of the meshes of the cardiovascular modeling rendered as shown in FIG. 2.

FIG. 3 is a diagram showing an object creation and visualization by a part setting unit constituting the system of the present invention, and FIG. 4 is a diagram showing a state in which a disease can be generated among all the vertices visualized by the site setting unit constituting the system of the present invention. It is a diagram showing the process of designating a region or vertex range.

Prior to the start of training, the location, type, and difficulty of the disease are automatically set through the system of the present invention, and objects are sequentially generated at the vertex positions of each of the visualized cardiovascular meshes, as shown in FIG. 3. Here, an index is sequentially assigned to an object created at each vertex position, so that it can be easily identified when setting a later part.

In addition, as shown in FIG. 4, the region setting unit 110 may designate a vertex range to which shape transformation for disease generation is applied to the entire visualized vertex of FIG. 3.

For example, in order to apply disease generation by the disease generation unit 120, when the number of vertices included in the designated range is n, each vertex is expressed as Vi(1 <= i <= n).

For reference, the selected region in FIG. 4 is a part of a coronary artery region where cardiovascular disease frequently occurs.

Trainees will be able to learn which diseases are generated in which areas according to the creation of various cardiovascular diseases, and what diseases occur in various cardiovascular areas for each subject, and furthermore, how to treat them if cardiovascular diseases occur. You will be able to learn.

5 and 6 are diagrams showing a shape change visually expressed when a vascular stenosis disease is generated by a disease generating unit constituting the system of the present invention.

In order to express the disease, the direction of vertex movement must be determined, and the average of the n Vis specified above is calculated. Here, the average value of n Vis becomes the center point, and the center point can be expressed as Vc. That is, the disease generating unit causes the shape change to be made based on a direction vector with respect to the center point of the vertex range in order to visualize a set cardiovascular disease.

In addition, the disease generation unit 120 performs (Vc-Vi) operation on each of n Vis, and expresses the resulting vectors as VSi.

Here, it can be seen that the result of normalizing VSi becomes n direction vectors with respect to the center point Vc. At this time, n direction vectors are expressed as DVi (1 <= i <= n).

If 0 is substituted for each y value of VSi and then normalized, a direction vector that is parallel to the xz plane and orthogonal to the y axis can be obtained.

Among the two direction vectors, a direction vector with a more natural disease expression can be selected and used.

Accordingly, the disease generating unit 120 may express a corresponding disease (eg, vascular stenosis) by moving n Vis in the DVi direction as much as desired.

A disease is created by creating an object at the vertex position of each mesh of the cardiovascular system modeled by the region setting unit 110 and the disease generation unit 120 of the present invention and visualizing it, and applying a shape transformation according to the set disease/disease. An example to be made will be described in more detail.

7 to 9 are diagrams showing a process of generating diseases in different regions of the modeled cardiovascular system.

In FIG. 7, vertices ranges of'blood vessel A'and'blood vessel B'are set for different cardiovascular regions, and as described above, an object is created and visualized at each vertex.

FIG. 8 shows a state in which the disease generating unit 120 applies a disease to'blood vessel A', and FIG. 9 shows a state in which the disease generating unit 120 applies a disease to'blood vessel B', Each of the blood vessels is a state in which vascular stenosis, which is a disease of the examples, has occurred.

The equation of the algorithm performed by the disease generating unit 120 is as follows.

As a condition, i represents a positive integer, n = the number of vertices, 1 <= i <= n, and Vi = each vertex.

: 중심점이고, Vc =

: Is the center point,

VSi = Vc-Vi: is the direction vector of Vi to Vc,

: VSi의 단위 벡터인 경우에, DVi =

: In the case of a unit vector of VSi,

The distance between Vi and Vc becomes Di, and Di can be calculated by the following equation.

Factor = user-specified value, rational number,

TVi = Vi + DVi * Di * Factor: The vertex is translated by a certain value to the center point.

Therefore, if TVi is moved as close to the disease type as possible, a visualized model of disease generation can be formed as shown in FIGS. 8 and 9.

In this way, the disease can be expressed and visualized by applying the same algorithm to other blood vessel regions other than the illustrated region.

However, when the algorithm is applied, the disease type may appear differently depending on the shape in which the vertices are distributed and the distance from the center point.

For example, referring to the shape of the vertices distributed in'blood vessel A'and'blood vessel B'shown in FIG. 7, it can be seen that a circular band is connected and has a shape of a blood vessel. It can be seen that'vessel A'has a small deviation between the circular bands made up of vertices compared to'vessel B', but has a certain distance. In addition, it can also be seen that the circular band formed by the vertices in the'blood vessel A'is formed a little further away from the center point.

Therefore, even if the same algorithm representing the same disease is applied for each blood vessel region, a visual effect in which the shape is transformed completely differently can be obtained.

Meanwhile, the disease treatment unit 130 and the training environment output unit 140 constituting the system of the present invention will be described.

FIG. 10 is a diagram showing a process of training by a trainee by a disease treatment unit constituting the system of the present invention, and FIG. 11 is a view shown to a trainee when a visualized disease is treated according to training by the disease treatment unit. This is a visualized drawing.

FIG. 10 shows a state in which a pungseong catheter is inserted to treat the vascular stenosis disease generated in FIG. 5. Medical tools corresponding to the catheter are very diverse, and the catheter shown in FIG. 10 is one of the frequently used surgical tools.

The disease treatment unit 130 allows the modeled catheter to visually move in the cardiovascular system and to be treated when the trainee manipulates the modeled catheter by manipulating the training tool.

As shown in Fig. 11, it is expressed as a shape after vascular stenosis treatment using a balloon catheter, and by moving n Vis (as much as desired to be expressed in the -DVi direction), the same result as in Fig. 11 can be obtained. At the same time , Expansion of the balloon catheter and disease treatment can be expressed by expanding the balloon scale of the balloon catheter at the same rate as the expansion rate of the blood vessel wall when it touches the blood vessel wall.

As described above, the training environment output unit 140 is an AR device worn by the trainee for each object created or treated by the site setting unit 110, the disease generation unit 120, and the disease treatment unit 130 And these components can be controlled under the control of the controller 100.

Claims (5)

A region setting unit for setting a region of a cardiovascular disease to be trained or visually expressed for the modeled cardiovascular system;
A disease generating unit configured to change the shape of a part of the cardiovascular vessel to visually express a cardiovascular disease including an aortic aneurysm, coronary artery stenosis, or aortic stenosis in the cardiovascular region set by the site setting unit;
A disease treatment unit configured to display a catheter visualized according to an operation or gesture of the trainee so that the trainee can practice treatment or operation of the cardiovascular area deformed by the disease generating unit;
A training environment output unit configured to display the cardiovascular disease generated by the site setting unit and the disease generating unit and a treatment state of the cardiovascular disease shown by the disease treatment unit on the AR device worn by the trainee; And
Including; a control unit for controlling the respective operations of the region setting unit, the disease generation unit, the disease treatment unit, and the training environment output unit,
The part setting unit visualizes the vertices by creating an object by assigning an index to each vertex of the mesh representing the modeled cardiovascular disease in order to set the vertex range for generating the cardiovascular disease.
The region setting unit differently assigns the designated range of the visualized vertices according to the cardiovascular disease to be set,
The disease generator is a cardiovascular shape transformation simulation system, characterized in that the shape transformation is made based on a direction vector with respect to a center point of the vertex range in order to visualize a set cardiovascular disease.
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