Titanium-Nickel Shape Memory Alloy Spring Actuator for Forward-Looking Active Catheter
Joint Authors
Tsurui, Takafumi
Nagasawa, Hiroyuki
Inoue, Shozo
Komatsubara, Mamoru
Miki, Takahiro
Namazu, Takahiro
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-02-17
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The fabrication and characterization of forward-looking active catheter actuated by titanium-nickel (Ti-Ni) shape memory alloy (SMA) springs are described.
The catheter has been designed for wide-range observation of an affected area inside a blood vessel when the blood vessel is occluded.
The developed active catheter consists of eight Ti-Ni SMA spring actuators for actuation of catheter tip, an ultrasonic transducer for forward-looking, a guide wire, a polyurethane tube for coating, and spiral wirings for realization of various flexure motions of catheter tip using Ti-Ni SMA actuators.
The size of the catheter is 3.5 mm in diameter and 60 mm in length of the sum of transducer and actuator sections.
Ti-Ni SMA springs were fabricated from a Ti-50.9at.%Ni sheet by electrochemical etching with a mixed solution of ethanol and lithium chloride.
The catheter was assembled by hand under a stereomicroscope.
The tip of the produced catheter was able to move in parallel toward at least eight directions by controlling an applied current to Ti-Ni SMA springs.
We have confirmed that the active catheter was able to observe an object settled in the front.
American Psychological Association (APA)
Namazu, Takahiro& Komatsubara, Mamoru& Nagasawa, Hiroyuki& Miki, Takahiro& Tsurui, Takafumi& Inoue, Shozo. 2011. Titanium-Nickel Shape Memory Alloy Spring Actuator for Forward-Looking Active Catheter. Journal of Metallurgy،Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-490457
Modern Language Association (MLA)
Namazu, Takahiro…[et al.]. Titanium-Nickel Shape Memory Alloy Spring Actuator for Forward-Looking Active Catheter. Journal of Metallurgy No. 2011 (2011), pp.1-9.
https://search.emarefa.net/detail/BIM-490457
American Medical Association (AMA)
Namazu, Takahiro& Komatsubara, Mamoru& Nagasawa, Hiroyuki& Miki, Takahiro& Tsurui, Takafumi& Inoue, Shozo. Titanium-Nickel Shape Memory Alloy Spring Actuator for Forward-Looking Active Catheter. Journal of Metallurgy. 2011. Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-490457
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-490457