Primary design of MRI compatible needle for the purpose of soft tissue insertion

摘要

In this article mechanical behavior of MRI compatible needle for Robotic-assist surgery (MCRobot) has been investigated. In the following of primary design and fabrication process of MCRobot the process of working with a MRI compatible needle emerged. This work wants to go through the material selection with the buckling analysis for robot's end-effecter. The investigation departed into two separate moments. Firstly, in the moment of punctuation of the tissue, and secondly, when the needle accedes to intended target for commence of sampling phase. Both of them are with different situations. In the moment of the sampling, internal layer lands on intended target for the purpose of biting the tissue. In the back of these two different analyses the acceptable range for young modulus in the designed needle suggested. Some features on magnetic and biocompatibility properties considered as a problematic issues in designed needle.