In this article we present a finite element simulation of an active steerable surgical needle. The highly maneuverable actuated needle can be utilized in many cases involving diagnostic and therapeutic percutaneous procedures; for example, in prostate brachytherapy. To make the surgical needle able to navigate through the tissue accurately, avoiding sensitive organs, external bending forces are being provided by smart actuators attached to the needle body (see Fig. 1). The shape memory alloy (SMA) wires, namely Nitinol, with unique properties of super-elasticity, shape memory effect, and biocompatibility are suitable as an actuator. The attached SMA wires contract when heated due to the phase transformation and therefore bends the needle. A 3D finite element (FE) model of the SMA actuated steerable needle was developed and validated by a prototype to show the feasibility of the design and also to study the factors influencing needle deflection.
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ASME 2013 Conference on Frontiers in Medical Devices: Applications of Computer Modeling and Simulation
September 11–13, 2013
Washington, DC, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-5600-0
PROCEEDINGS PAPER
Finite Element Simulation of an Active Surgical Needle for Prostate Brachytherapy
Bardia Konh,
Bardia Konh
Temple University, Philadelphia, PA
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Parsaoran Hutapea
Parsaoran Hutapea
Temple University, Philadelphia, PA
Search for other works by this author on:
Bardia Konh
Temple University, Philadelphia, PA
Parsaoran Hutapea
Temple University, Philadelphia, PA
Paper No:
FMD2013-16049, V001T10A010; 2 pages
Published Online:
February 19, 2014
Citation
Konh, B, & Hutapea, P. "Finite Element Simulation of an Active Surgical Needle for Prostate Brachytherapy." Proceedings of the ASME 2013 Conference on Frontiers in Medical Devices: Applications of Computer Modeling and Simulation. ASME 2013 Conference on Frontiers in Medical Devices: Applications of Computer Modeling and Simulation. Washington, DC, USA. September 11–13, 2013. V001T10A010. ASME. https://doi.org/10.1115/FMD2013-16049
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