Simulation method and apparatus for soft tissue deformation in surgical operation
A technology of surgical operation and simulation method, which is applied in the field of biomechanical simulation and can solve problems such as the inability to deal with large-scale deformation of soft tissues.
Inactive Publication Date: 2017-07-07
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
View PDF2 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of this, the embodiment of the present invention provides an interactive biomechanical simulation method and device to solve the problem that the meshless method cannot handle large-scale deformation of soft tissue in surgical simulation
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0026] figure 1 It shows the implementation flow of the simulation method for surgical soft tissue deformation provided by the embodiment of the present invention. In this solution, a point-based method is used to reproduce the biomechanical response of human organs during the surgical interaction process. The implementation flow is detailed as follows:
[0027] In S101, during the surgical simu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention is suitable for the technical field of biomechanical simulation, and provides a simulation method and apparatus for soft tissue deformation in a surgical operation. The method comprises the steps of in a surgical operation simulation process, for each particle i in soft tissues, calculating a deformation gradient, defined in the specification, of the particle; performing diagonalization on the deformation gradient Fi to obtain a singular value matrix defined in the specification, and calculating a first stress, defined in the specification, of the particle after the diagonalization; and calculating action force, defined in the specification, of each neighborhood particle j of the particle i on the particle i, and performing deformation processing on the soft tissues according to a calculation result. According to the simulation method and apparatus provided by embodiments of the invention, biomechanical responses of human organs in a surgical operation interaction process are reproduced through a point-based method; and in deformation of the soft tissues, the position change of each particle only depends on material properties, so that very high model precision can be achieved.
Description
technical field [0001] The invention belongs to the technical field of biomechanics simulation, in particular to a simulation method and device for surgical soft tissue deformation. Background technique [0002] In recent years, although various medical methods have made great progress, for patients with more serious conditions, surgery is still the one with the highest cure rate. Surgical simulation of virtual reality technology can effectively shorten the period of surgical training for interns. Its main applications include preoperative medical image processing, anatomical structure visualization, and biomechanical simulation. [0003] In the field of surgical simulation of virtual reality technology, interactive biomechanical simulation is a key technology. The mesh-free method developed in recent years illustrates the advantages of not using mesh in the traditional sense, which is suitable for research objects with complex geometries. The processing method is more flex...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16H50/50
Inventor 王琼司伟鑫袁志勇秦璟王平安孙寅紫
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI