Title :
Laser microprocessing of stent for medical therapy
Author_Institution :
Laser X Co. Ltd., Chiryu, Japan
Abstract :
In the medical application of stent therapy, especially in coronary heart disease, a metallic stent of high quality demands the ability for precision micromaterial processing. It possesses an inherent advantage of adequate radio-opacity. This paper describes the fabrication of such a metallic stent of length 20 mm and dia. 2.1 mm with an annular tube thickness of 0.2 mm, by using a pulsed Nd:YAG laser. Fine structures with a slit width of 0.1 mm and a pitch better than 0.4 mm are created with sharpness and low roughness in the cut surface. Some features of the reduced heat affected zone and dross removal process of the cut surface are also discussed
Keywords :
blood vessels; cardiology; laser applications in medicine; prosthetics; 0.1 mm; 0.2 mm; 2.1 mm; 20 mm; YAG:Nd; YAl5O12:Nd; adequate radioopacity; annular tube thickness; coronary heart disease; cut surface; dross removal process; high quality metallic stent; laser microprocessing; medical therapy; metallic stent fabrication; reduced heat affected zone; roughness; sharpness; slit width; stent therapy; Corrosion; Etching; Laser beam cutting; Medical treatment; Optical device fabrication; Optical pulses; Rough surfaces; Space vector pulse width modulation; Surface discharges; Surface roughness;
Conference_Titel :
Micromechatronics and Human Science, 1998. MHS '98. Proceedings of the 1998 International Symposium on
Conference_Location :
Nagoya
Print_ISBN :
0-7803-5130-4
DOI :
10.1109/MHS.1998.745759
