Calculi fragmentation of Er:YAG laser light through a sealed flexible hollow fiber delivery system

Katsumasa Iwai, Yi Wei Shi, Koh Nito, Yuji Matsuura, Takao Kasai, Mitsunobu Miyagi, Seichi Saito, Youichi Arai, Naomasa Ioritani, Yoshihide Okagami, Michael Nemec, Jan Sulc, Helena Jelinkova, Miroslav Zavoral, Oto Kohler, Pavel Drlik

Research output: Contribution to journalConference articlepeer-review


Calculi fragmentation experiments were conducted in vitro by using Er:YAG laser light. The laser light delivery system was composed of a cyclic olefin polymer (COP)-coated silver (Ag) hollow fiber and a quartz cap to seal the output end of the hollow fiber. Sealing-caps with various distal end geometries were fabricated and the focusing effects for Er:YAG laser light were measured both in air and in water. Fragmentation characteristics of the sealing-caps were investigated. The deterioration of sealing-caps after calculus fragmentation was also experimentally discussed.

Original languageEnglish
Pages (from-to)62-69
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2003
EventPROGRESS IN BIOMEDICAL OPTICS AND IMAGING: Optical Fibers and Sensors for Medical Applications III - San Jose, CA, United States
Duration: 2003 Jan 252003 Jan 28


  • Calculus
  • Er:YAG laser
  • Hollow fiber
  • Sealing-cap

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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