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

Volume

1

fYear

2005

Firstpage

729

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/SENSOR.2005.1496520

Filename

1496520