Open Access3D model of deflection of an asymmetrical needle during motion in soft tissues
Author(s) -
В. Г. Дружинин,
В. А. Морозов
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1959/1/012018
Subject(s) - imaging phantom , deflection (physics) , soft tissue , biomedical engineering , biological tissue , physics , computer science , optics , engineering , surgery , medicine
This study describes a mathematical model of deflection of a steel medical injection needle during its motion in the soft tissue phantom (imitation of human tissues). This model is necessary for adjustment of robotically assisted systems during brachytherapy procedures or similar operations where high precision needle tip positioning is prerequisite. Since the needle tip is asymmetrical, the needle will deform when moving in human tissues and consequently deflect from the rectirectilinear motion. Thus, by inserting and rotating the needle around its axis the needle tip can be led along the predetermined path. This study adopts a new approach to describe an external impact on the needle when it moves inside human tissues and also describes 2 D and 3 D models, a process of selection of coefficients for 3D models, and provides simulation results.