Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5032669 | Medical Engineering & Physics | 2017 | 6 Pages |
Abstract
Needle insertion is critical in many clinical medicine procedures, such as biopsy, brachytherapy, and injection therapy. A platform with two degrees of freedom was set up to study the effect of vibration frequency on needle insertion force. The gel phantom deformation at the needle cutting edge and the Voigt model are utilized to develop a dynamic model to explain the relationship between the insertion force and needle-tip velocity. The accuracy of this model was verified by performing needle insertions into phantom gel. The effect of vibration on insertion force can be explained as the vibration increasing the needle-tip velocity and subsequently increasing the insertion force. In a series of needle insertion experiments with different vibration frequencies, the peak forces were selected for comparison to explore the effect of vibration frequency on needle insertion force. The experimental results indicate that the insertion force at 500Â Hz increases up to 17.9% compared with the force at 50Â Hz.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Biomedical Engineering
Authors
Tan Lei, Qin Xuemei, Zhang Qinhe, Zhang Hongcai, Dong Hongjian, Guo Tuodang, Liu Guowei,