Tube shape piezoelectric 2D microscanner for minimally invasive laser treatment

Author

Akahori, H. ; Wada, H. ; Esashi, Masayoshi ; Haga, Y.

Author_Institution

Graduate Sch. of Eng., Tohoku Univ., Japan

fYear

2005

fDate

30 Jan.-3 Feb. 2005

Firstpage

76

Lastpage

79

Abstract

For precise laser treatment in the human body, a 2D (two dimensional) laser scanning micro tool has been developed. The tool is made up of an optical fiber, a micro rod lens and a 2D microscanner. The 2D microscanner has three piezoelectric unimorph cantilevers that have a ball joint at each tip and a mirror. The mirror is supported by a pivot from underside and is inclined by pushing down by three cantilevers on the top of the mirror. The maximum inclined angle of the mirror is about 26 degrees. For insertion the tool into a working channel of a conventional endoscope, these components are packaged into a 3.8-mm-external-diameter polymer tube.

Keywords

laser applications in medicine; micro-optics; optical scanners; endoscope; laser scanning micro tool; micro rod lens; minimally invasive laser treatment; optical fiber; piezoelectric 2D microscanner; piezoelectric unimorph cantilevers; polymer tube; Endoscopes; Fiber lasers; Humans; Joints; Lenses; Minimally invasive surgery; Mirrors; Optical fibers; Packaging; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems, 2005. MEMS 2005. 18th IEEE International Conference on

ISSN

1084-6999

Print_ISBN

0-7803-8732-5

Type

conf

DOI

10.1109/MEMSYS.2005.1453871

Filename

1453871