Endoscopic laser coagulation through an optical laser balloon

✍ Scribed by Dr. Yoshiyuki Shimamura; Peter Gunvén; Masanori Ishii; Shouzou Kitai; Masato Ono; Kazuo Okajima; Yasou Shima; Shigeo Ikuta; Akira Takahashi; Tomoki Kitaya; Tomoji Matsuyama

• Book ID: 102466473
• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 221 KB
• Volume: 10
• Category: Article
• ISSN: 0196-8092
• DOI: 10.1002/lsm.1900100107

✦ Synopsis

Abstract

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.