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Endoscopic laser coagulation through an optical laser balloon
Author(s) -
Shimamura Yoshiyuki,
Gunvén Peter,
Ishii Masanori,
Kitai Shouzou,
Ono Masato,
Okajima Kazuo,
Shima Yasou,
Ikuta Shigeo,
Takahashi Akira,
Kitaya Tomoki,
Matsuyama Tomoji
Publication year - 1990
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.1900100107
Subject(s) - laser , balloon , coagulation , laser therapy , medicine , laser coagulation , surgery , optics , physics , visual acuity
An endoscope was equipped with a saline‐filled latex rubber balloon at its tip to displace contaminating blood, bile, or gastric contents during operative portoscopy, biliary endoscopy, or upper gastrointestinal endoscopy. A fiber with its tip inside the balloon transmitted energy from an Nd:YAG laser for coagulation of tumors in one bile duct cancer, in six portal vein growths from primary liver cancers, and in a superficially growing stomach cancer. The balloon increased the precision of irradiation by making lesions easier to identify through displacement of bile or blood and by keeping the fiber tip at a fixed position relative to the lesion. The technique, basic experimental studies, and clinical experiences are reported.