A Newly Developed Variable Stiffness Duodenoscope for Diagnostic and Therapeutic Endoscopic Retrograde Cholangiopancreatography

Table 1

Basic specifications of each duodenoscope.

Type of duodenoscope	TJF-Y0001	JF-260V	TJF-260V
Field of view, degrees	100°	100°	100°
Depth of field, mm	5 to 60	5 to 60	5 to 60
Distal end outer diameter, mm	13.5	12.6	13.5
Insertion tube diameter, mm	11.6	11.3	11.3
Working length of insertion tube, mm	1240	1240	1240
Length of variable stiffness, mm	26	0	0
Working channel diameter, mm	4.2	3.7	4.2