Flexible Needle Bending Model for Spinal Injection Procedures
Yanzhou Wang, Ka-Wai Kwok, Kevin Cleary, Russell H. Taylor, Iulian Iordachita
Abstract
An <i>in situ</i> needle manipulation technique used by physicians when performing spinal injections is modeled to study its effect on needle shape and needle tip position. A mechanics-based model is proposed and solved using finite element method. A test setup is presented to mimic the needle manipulation motion. Tissue phantoms made from plastisol as well as porcine skeletal muscle samples are used to evaluate the model accuracy against medical images. The effect of different compression models as well as model parameters on model accuracy is studied, and the effect of needle-tissue interaction on the needle remote center of motion is examined. With the correct combination of compression model and model parameters, the model simulation is able to predict needle tip position within submillimeter accuracy.
BibTeX
@inproceedings{ral2023_flexibleneedlebe,
title = {Flexible Needle Bending Model for Spinal Injection Procedures},
author = {Yanzhou Wang and Ka-Wai Kwok and Kevin Cleary and Russell H. Taylor and Iulian Iordachita},
booktitle = {RA-L 2023},
year = {2023}
}