Surgical needles, for safe and accurate percutaneaous interventions, need to be navigated accurately through the tissue and placed precisely at the targets. A novel active needle, using Nitinol wires as actuators, has been proposed to navigate the needle within the tissue. In this design, when temperature of Nitinol wire was increased by Joule heating, the material undergoes a phase transformation that produces relatively large actuating forces and strains. Using both experimental and numerical simulations, the force-temperature response of the Nitinol wires were characterized. The results indicate that increasing the applied current decreases the response time to reach maximum force, but increases the maximum temperature reached. Therefore, the chosen applied current should be high enough to produce sufficient actuation force and shorter response time, but not too high such that the lower actuator temperatures are maintained to minimize tissue damage.
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ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 19–21, 2012
Stone Mountain, Georgia, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4510-3
PROCEEDINGS PAPER
Towards a Nitinol Actuator for an Active Surgical Needle
Naresh V. Datla,
Naresh V. Datla
Temple University, Philadelphia, PA
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Mohammad Honarvar,
Mohammad Honarvar
Temple University, Philadelphia, PA
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Tuan M. Nguyen,
Tuan M. Nguyen
Temple University, Philadelphia, PA
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Bardia Konh,
Bardia Konh
Temple University, Philadelphia, PA
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Kurosh Darvish,
Kurosh Darvish
Temple University, Philadelphia, PA
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Yan Yu,
Yan Yu
Thomas Jefferson University, Philadelphia, PA
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Adam P. Dicker,
Adam P. Dicker
Thomas Jefferson University, Philadelphia, PA
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Tarun K. Podder,
Tarun K. Podder
East Carolina University, Greenville, NC
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Parsaoran Hutapea
Parsaoran Hutapea
Temple University, Philadelphia, PA
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Naresh V. Datla
Temple University, Philadelphia, PA
Mohammad Honarvar
Temple University, Philadelphia, PA
Tuan M. Nguyen
Temple University, Philadelphia, PA
Bardia Konh
Temple University, Philadelphia, PA
Kurosh Darvish
Temple University, Philadelphia, PA
Yan Yu
Thomas Jefferson University, Philadelphia, PA
Adam P. Dicker
Thomas Jefferson University, Philadelphia, PA
Tarun K. Podder
East Carolina University, Greenville, NC
Parsaoran Hutapea
Temple University, Philadelphia, PA
Paper No:
SMASIS2012-8204, pp. 265-269; 5 pages
Published Online:
July 24, 2013
Citation
Datla, NV, Honarvar, M, Nguyen, TM, Konh, B, Darvish, K, Yu, Y, Dicker, AP, Podder, TK, & Hutapea, P. "Towards a Nitinol Actuator for an Active Surgical Needle." Proceedings of the ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting. Stone Mountain, Georgia, USA. September 19–21, 2012. pp. 265-269. ASME. https://doi.org/10.1115/SMASIS2012-8204
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