A method and device for simulating the interaction between blood flow and vessel wall

A blood vessel wall and blood flow technology, applied in the field of human-computer interaction, can solve the problems that the simulated vascular surgery system cannot truly reflect the interaction between blood flow and vessel wall, and cannot interact with blood flow and vessel wall, so as to achieve effective interactive information Effect

Active Publication Date: 2019-03-01
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for simulating the interaction between blood flow and vascular wall to solve the problem that the existing technology cannot truly reflect the blood flow and vascular wall in the simulated vascular surgery system due to the inability to interact between the blood flow and the vascular wall. interactive information problem

Method used

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  • A method and device for simulating the interaction between blood flow and vessel wall
  • A method and device for simulating the interaction between blood flow and vessel wall
  • A method and device for simulating the interaction between blood flow and vessel wall

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Embodiment 1

[0032] figure 1 The implementation flow of the method for simulating the interaction between blood flow and blood vessel wall provided by the first embodiment of the present invention is shown, and the details are as follows:

[0033] In step S101, the pressure density, viscous force density and external force density of the fluid particles in the blood vessel are calculated by the smoothed particle hydrodynamic method.

[0034] Specifically, under normal circumstances, the basic equation of blood flow motion is derived from the mass conservation, momentum conservation and energy conservation of the fluid. We assume that the temperature of the blood stream is nearly constant and that there is no heat input into the system. Therefore, the energy balance equation is the same as that of the mechanical energy balance, and the conservation of energy results in no new independent equations. In addition, particle systems achieve mass conservation by maintaining the number of partic...

Embodiment 2

[0074] Image 6 It shows a structural block diagram of the device for simulating the interaction between blood flow and blood vessel wall provided by the second embodiment of the present invention, and the details are as follows:

[0075] The device for simulating the interaction between blood flow and blood vessel wall described in the embodiment of the present invention includes:

[0076] The first calculation unit 601 is used to calculate the pressure density, viscous force density and external force density of the fluid particles in the blood vessel through the smooth particle hydrodynamic method;

[0077] The second calculation unit 602 is configured to use a particle spring model to calculate the rebound boundary force on the boundary particles located at the junction of the blood vessel wall and the blood flow;

[0078] The update unit 603 is used to integrate the calculated pressure density, viscous force density, external force density of the fluid particles in the b...

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Abstract

The invention is applicable to the field of man-machine interaction, and provides a method and a device for simulating blood flow and vascular wall effects. The method includes calculating pressure density, viscous-force density and external-force density of fluid particles in blood vessels by the smooth-particle fluid dynamics method; calculating rebound boundary force applied to boundary particles at the junctions of vascular walls and blood flow by a mass point spring model; integrating the calculated force and upgrading dynamic information of the blood flow and the vascular walls. According to the method, deformation of the vascular walls can be simulated while blood flowing is simulated, the particles located at the junctions can be regarded as the boundary particles in the smooth-particle fluid dynamics method and in the mass point spring model, and more real, real-time and effective interactive information can be provided for a virtual blood vessel operation system through calculation of the rebound boundary force.

Description

technical field [0001] The invention belongs to the field of human-computer interaction, and in particular relates to a method and a device for simulating the interaction between blood flow and blood vessel wall. Background technique [0002] In the simulated vascular surgery system for the training and planning of many surgical operations, the study of the interaction between the blood flow and the vessel wall, so as to truly simulate the blood flow and its interaction with the surrounding tissue, can provide real-time and effective information for the simulated vascular surgery system. Interactive information can more effectively help doctors understand how to take correct actions when encountering special situations. Therefore, the research work on the interaction between blood flow and vessel wall plays a very important role in evaluating the quality of the system. [0003] Existing methods for simulating the interaction between blood flow and blood vessel walls, includ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16H50/50
CPCY02T90/00
Inventor 孙寅紫秦璟王平安
Owner SHENZHEN INST OF ADVANCED TECH
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