Title :
Shape memory thin film actuator for holding a fine blood vessel
Author :
Sugawara, Takashi ; Hirota, Ken-Ichi ; Watanabe, Masaru ; Mineta, Takashi ; Makino, Eiji ; Toh, Satoshi ; Shibata, Takayuki
Author_Institution :
Hirosaki Univ. Sch. of Medicine, Japan
Abstract :
We describe a shape memory alloy thin film actuator which presents a two-step actuation. The actuator holds a blood vessel securely by the first actuation, and allows continuous monitoring of thrombus formation after microsurgery. After monitoring, it releases the blood vessel easily by the second actuation and is removed without any additional surgical invasions. Basic properties of shape memory alloy thin films were investigated for secure actuation within the human body, and motion tests of the actuator were carried out.
Keywords :
biomedical equipment; blood vessels; haemorheology; microactuators; patient monitoring; shape memory effects; thin films; continuous monitoring; fine blood vessel; microsurgery; microvascular blood flow; phase transformation temperatures; shape memory alloy; surgical invasions; thin film actuator; thrombus formation; two-step actuation; Actuators; Blood vessels; Boats; Monitoring; Nickel; Shape memory alloys; Substrates; Surgery; Titanium; Transistors;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05. The 13th International Conference on
Print_ISBN :
0-7803-8994-8
DOI :
10.1109/SENSOR.2005.1496520
