1989 Volume 31 Issue 2 Pages 483-489
The choledochof iberscope is an essential instrument for treating stone in common bile duct. However, conventional choledochofiberscopy have not been always good against the stone incarcerated at the distal part of the common bile duct or the large stone in the choledochus. We would like to present our newly devised instrument that is expected to be much better because of its much improved function of gripping and crashing the stone. Rough specifications of the instrument are as follows : Outer Diameter ; 6.2 mm Total Length ; 610 mm Forceps ; Located on the tip of the instrument Image guide, light guide and waterfeed hole ; located in the center. From Oct. 1986 till Feb. 1988, 17 cases of stones in common bile ducts were treated with this instrument. Patients consisted of 8 men and 9 women respectively, and average age was 65 years. The average diameter of stone was 12 mm. Three cases of gall stones of which sizes were over 20 mm in diameter were also treated with this instrument. Intraoperative lithotomy was carried out in 15 cases. Two cases were treated through Percutaneous Transhepatic Cholangial Catheterization (PTCC). Lithotomy was successfully performed with no complications in all of the 17 cases. This instrument was so designed as to increase in gripping force by applying bigger forceps. The stone with hardness equivalent to a piece of white chalk could be broken. The instrument will be clinically useful in that the lithotomy can be safely performed both percutaneous transhepatically and intraoperatively. This instrument was developed by FUJI PHOTO OPTI-CAL CO., LTD.
