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We have developed an endoscopically deliverable bipolar coagulator with a pair of active bipolar electrodes and tested its efficacy and safety in canine gastric bleeding models. Hemostasis was achieved with a few applications in all "ulcer maker", gastric serosal vessel, mesenteric vessel and endoscopic "hot biopsy" models. Histologically the mean muscular injury was 10.1% in ulcer maker models and 17.1% in hot biopsy models, significantly less than monopolar electrodes. No full thickness injury resulted. Initial clinical trials in 32 patients with upper gastrointestinal bleeding revealed 100% immediate hemostasis; it could stop spurting arterial bleeding. Our bipolar coagulator is a promising addition to the endoscopic hemostatic methods.
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
September 1989,
Zhonghua nei ke za zhi,
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
February 1978,
Gastroenterology,
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
June 1981,
Military medicine,
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
May 1979,
The American journal of gastroenterology,
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
April 1986,
Gastrointestinal endoscopy,
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
January 1987,
Annales chirurgiae et gynaecologiae,
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
November 1984,
The British journal of surgery,
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
September 1986,
Digestive diseases and sciences,
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
October 1982,
The Surgical clinics of North America,
H Yamamoto, and
K Hajiro, and
H Matsui, and
D Tsujimura, and
T Yamamoto
October 1971,
Plastic and reconstructive surgery,
