Erbium: YAG laser lithotripsy by use of a flexible hollow waveguide with an end–scaling cap

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

doi:10.1364/AO.42.002431

Erbium: YAG laser lithotripsy by use of a flexible hollow waveguide with an end–scaling cap

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

MEN - Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

An Er:YAG laser light delivery system composed of a polymer-coated silver hollow waveguide and a quartz sealing cap has been developed for calculus fragmentation. Sealing caps with various distal-end geometries were fabricated, and the focusing effects of these caps for Er:YAG laser light were measured both in air and in water. Owing to the high power capability of the quartz sealing caps, a beam of Er:YAG laser light with an output energy of 200 mJ and a repetition rate of 10 Hz was successfully transmitted in saline solution by use of the system. Calculus fragmentation experiments conducted in vitro showed that the delivery system is suitable for medical applications in lithotripsy. We also found that the cap with a focusing effect is more effective in cutting calculi. The deterioration of the sealing caps after calculus fragmentation is also discussed.

Original language	English
Pages (from-to)	2431-2435
Number of pages	5
Journal	Applied optics
Volume	42
Issue number	13
DOIs	https://doi.org/10.1364/AO.42.002431
Publication status	Published - 2003 May 1

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

Access to Document

10.1364/AO.42.002431

Cite this

@article{d2e9a530233c407c9870d6efc264b43c,

title = "Erbium: YAG laser lithotripsy by use of a flexible hollow waveguide with an end–scaling cap",

abstract = "An Er:YAG laser light delivery system composed of a polymer-coated silver hollow waveguide and a quartz sealing cap has been developed for calculus fragmentation. Sealing caps with various distal-end geometries were fabricated, and the focusing effects of these caps for Er:YAG laser light were measured both in air and in water. Owing to the high power capability of the quartz sealing caps, a beam of Er:YAG laser light with an output energy of 200 mJ and a repetition rate of 10 Hz was successfully transmitted in saline solution by use of the system. Calculus fragmentation experiments conducted in vitro showed that the delivery system is suitable for medical applications in lithotripsy. We also found that the cap with a focusing effect is more effective in cutting calculi. The deterioration of the sealing caps after calculus fragmentation is also discussed.",

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

year = "2003",

month = may,

day = "1",

doi = "10.1364/AO.42.002431",

language = "English",

volume = "42",

pages = "2431--2435",

journal = "Applied Optics",

issn = "0003-6935",

publisher = "The Optical Society",

number = "13",

}

TY - JOUR

T1 - Erbium

T2 - YAG laser lithotripsy by use of a flexible hollow waveguide with an end–scaling cap

AU - Iwai, Katsumasa

AU - Shi, Yi Wei

AU - Nito, Koh

AU - Matsuura, Yuji

AU - Kasai, Takao

AU - Miyagi, Mitsunobu

AU - Saito, Seichi

AU - Arai, Youichi

AU - Ioritani, Naomasa

AU - Okagami, Yoshihide

AU - Nemec, Michal

AU - Sulc, Jan

AU - Jelinkova, Helena

AU - Zavoral, Miroslav

AU - Kohler, Oto

AU - Drlik, Pavel

PY - 2003/5/1

Y1 - 2003/5/1

N2 - An Er:YAG laser light delivery system composed of a polymer-coated silver hollow waveguide and a quartz sealing cap has been developed for calculus fragmentation. Sealing caps with various distal-end geometries were fabricated, and the focusing effects of these caps for Er:YAG laser light were measured both in air and in water. Owing to the high power capability of the quartz sealing caps, a beam of Er:YAG laser light with an output energy of 200 mJ and a repetition rate of 10 Hz was successfully transmitted in saline solution by use of the system. Calculus fragmentation experiments conducted in vitro showed that the delivery system is suitable for medical applications in lithotripsy. We also found that the cap with a focusing effect is more effective in cutting calculi. The deterioration of the sealing caps after calculus fragmentation is also discussed.

AB - An Er:YAG laser light delivery system composed of a polymer-coated silver hollow waveguide and a quartz sealing cap has been developed for calculus fragmentation. Sealing caps with various distal-end geometries were fabricated, and the focusing effects of these caps for Er:YAG laser light were measured both in air and in water. Owing to the high power capability of the quartz sealing caps, a beam of Er:YAG laser light with an output energy of 200 mJ and a repetition rate of 10 Hz was successfully transmitted in saline solution by use of the system. Calculus fragmentation experiments conducted in vitro showed that the delivery system is suitable for medical applications in lithotripsy. We also found that the cap with a focusing effect is more effective in cutting calculi. The deterioration of the sealing caps after calculus fragmentation is also discussed.

UR - http://www.scopus.com/inward/record.url?scp=0037712939&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037712939&partnerID=8YFLogxK

U2 - 10.1364/AO.42.002431

DO - 10.1364/AO.42.002431

M3 - Article

C2 - 12737479

AN - SCOPUS:0037712939

SN - 0003-6935

VL - 42

SP - 2431

EP - 2435

JO - Applied Optics

JF - Applied Optics

IS - 13

ER -

Erbium: YAG laser lithotripsy by use of a flexible hollow waveguide with an end–scaling cap

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this