The transient heat transfer analysis of percutaneous laser disc decompression

• Main Authors: Yi-Hung Chen, 陳翊航
• Other Authors: Po-Jen Cheng
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/74704591846881926683

碩士 === 遠東科技大學 === 機械研究所 === 97 === This study is to discuss the variation of different surgical conditions while PLDD is processing. The multiphysics analysis algorithm is used to understand the temperature and stress distribution of the whole domain and heat transfer phenomena under the different kinds of laser heating rate and patients. In this study, the effect of thermal conductivity related about the patient’s age will be illustrated. In addition, the temperature profile is predicted as the heat transfer phenomena can be handled on the surgical process. In future, we expect that this result can be used to handle the PLDD in the pre-surgical simulation. This study is to obtain the thermal structure conjugated phenomena under the different surgical conditions while percutaneous laser disc decompression (PLDD) is processing. PLDD is a minimal invasive surgery which through the laser vaporizes the herniation of disc. By this technology, we can remove or release the compression on nerve root and reduce the volume of herniation to decompress. The 3D thermal structure conjugated model of COMSOL is used in this study. We discuss the parameters of the PLDD, such as laser power, laser moving speed and the content of water. The temperature profile of the intervertebral disk is obtained and reveals the relations among these parameters. These results are expected to be a pre-surgical analysis to benefit the PLDD processing.