DocumentCode :
710954
Title :
Nitinol based flexible smart needle design
Author :
Zhao, V. ; Lee, H.H. ; Martin, V.P. ; Konh, B. ; Hutapea, P.
Author_Institution :
Dept. of Mech. Eng., Temple Univ., Philadelphia, PA, USA
fYear :
2015
fDate :
17-19 April 2015
Firstpage :
1
Lastpage :
2
Abstract :
This project involves the design of an active needle with enhanced mobility, flexibility, and control within tissues during diagnostic and percutaneous medical procedures. The design utilizes the shape memory, super-elastic, and thermo-mechanical properties of Nitinol, a smart memory alloy (SMA) made of nickel and titanium, to construct a steerable needle during insertion. The design of the needle includes a Nitinol needle body, Nitinol wires attached to the body as actuators, and a nylon flexure joint to provide electrical insulation. With the current design, the prototype was able to achieve unidirectional control of the needle´s deflection during insertion into a tissue-mimicking gel. However, further studies must be performed to improve needle´s maneuverability as well as verify the feasibility of the SMA properties. The goal of this design is to achieve real-time control of the needle as well as to build a more minimally invasive tool for percutaneous procedures. With an active steerable cannula, minimal damage to tissue and risk to patients can be lowered significantly.
Keywords :
biomedical equipment; elasticity; gels; intelligent materials; needles; nickel alloys; shape memory effects; titanium alloys; NiTi; active needle design; active steerable cannula; actuators; diagnostic procedures; electrical insulation; insertion; minimally invasive tool; needle deflection; needle maneuverability; nitinol based flexible smart needle design; nitinol needle body; nitinol wires; nylon flexure joint; percutaneous medical procedures; real-time control; shape memory properties; smart memory alloy; super-elastic properties; thermomechanical properties; tissue-mimicking gel; unidirectional control; Electron tubes; Insulation; Joints; Needles; Prototypes; Shape; Wires; Nitinol; active needle; shape memory alloy; steerable cannula;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Biomedical Engineering Conference (NEBEC), 2015 41st Annual Northeast
Conference_Location :
Troy, NY
Print_ISBN :
978-1-4799-8358-2
Type :
conf
DOI :
10.1109/NEBEC.2015.7117236
Filename :
7117236
Link To Document :
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