Title :
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
fDate :
30 Jan.-3 Feb. 2005
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;
Conference_Titel :
Micro Electro Mechanical Systems, 2005. MEMS 2005. 18th IEEE International Conference on
Print_ISBN :
0-7803-8732-5
DOI :
10.1109/MEMSYS.2005.1453871
