Size design and parameter optimization of embolization coil for cerebral aneurysm based on finite element compliance analysis

Spring coil embolization structure is difficult to manufacture in China, and the processing technology is not clear.so the imported coil is often chosen for embolism operation, which leads to the high cost of operation and is difficult to popularize. In this paper, the coil for cerebral aneurysm embolization is taken as the research object. By consulting literature, the material and shape of the coil are determined. According to the size parameters of the imported coil and arterial blood vessel parameters,designing the size of several groups of first-stage spring coil, and establishing a three-dimensional simulation model. By referring to the requirements and analysis methods of the compliance of interventing materials,carrying out a finite element analysis of the compliance between the imported spring coil and the designed size spring coil. By comparing the analysis results, designing the winding parameters of the first stage coil which are similar to the material, shape, size and compliance of the imported spring coil.