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Real-time simulation method for embedded suture technology

A technology of real-time simulation and simulation method, applied in the field of real-time simulation of buried suture technology, can solve the problem of not being able to give doctors a degree of freedom, and achieve the effect of improving authenticity and effectiveness, improving efficiency, and efficient updating

Inactive Publication Date: 2013-01-02
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

In most of the work on stitching simulation, scholars mostly focus on the single-layer mesh on the surface, except Miyazaki, who proposed in the article the method of using 8 control points to complete the stitching process with two-layer meshes. However, even so, Nor does it give the trained physicians much latitude

Method used

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  • Real-time simulation method for embedded suture technology
  • Real-time simulation method for embedded suture technology
  • Real-time simulation method for embedded suture technology

Examples

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Embodiment

[0035] This embodiment is implemented in a personal computer with Intel Core i5, an ATI Mobility Radeon HD 5730 GPU and 4G memory. The entire virtual surgery training system is written in C++ language and a qt programming interface is used.

[0036] The implementation process of this embodiment is as follows figure 1 As shown, a real-time simulation method of buried suture technology specifically includes the following steps:

[0037] The first step is to use a physical model-based simulation method to model the soft tissue using the tetrahedral spring model. Such as figure 2 As shown, the so-called tetrahedral spring model first uses a space segmentation algorithm to divide the continuous space into a collection of tetrahedrons, which is called a tetrahedral mesh. After meshing, the obtained tetrahedral mesh can express various status information of corresponding positions in continuous space. After the space is discretized and divided, the finite element or spring model can be ...

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Abstract

The invention relates to a real-time simulation method for an embedded suture technology. The method comprises the following steps of: 1) modeling soft tissue by employing a tetrahedron spring model; 2) modeling a suture line by employing the tetrahedron spring model by means of a hair simulation method; 3) rendering the suture line, introducing a Bezier curve for differential, and rendering a whole suture line by drawing a ball; 4) performing collision detection and surface tension simulation by employing a K-DOPS tree; 5) inserting a needle head into the soft tissue when the needle head is collided with the soft tissue and the force of the needle head applying to the surface of the soft tissue is greater than the maximum tension which can be borne by the surface of the soft tissue, and executing a step 6); and 6) performing interactive simulation on the soft tissue and the suture line, wherein the interactive simulation comprises interaction between the suture line and the surface grid of the soft tissue and interaction between the suture line and the inner grid of the soft tissue. Compared with the prior art, the real-time simulation method has the advantages of stability, reliability, convenience in implementation, reality and high efficiency.

Description

Technical field [0001] The invention relates to a simulation method of virtual surgery, in particular to a real-time simulation method of buried suture technology. Background technique [0002] With the rapid development of science and technology, the application of virtual surgery has provided more and more help for the modernization of medical treatment. As an indispensable part of virtual surgery, suture has become a research topic for many scholars. In the process of suture simulation research, early scholars only started to simulate the surface suture of soft tissues. However, surface suture cannot represent the overall suture technique, nor can it give the trainer a lot of freedom, and it cannot provide the trainer in all directions. Conduct training and inspections. Buried suture has high requirements for the simulation of soft tissue and thread. It not only requires high authenticity of soft tissue and thread model, but also has a reliable physical model for the simulat...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 顾力栩杨山
Owner SHANGHAI JIAO TONG UNIV
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