Table 1:
Endoscopes and accessories for ERCP in biliary diseases in use in our
Center.
Endoscopes |
Characteristics |
Pediatric diagnostic duodenoscope |
Insertion tube 7.5 mm; distal end 7.5 mm; operative channel 2 mm Useful for neonates and infants weighing less than
10 Kg Narrow operative channel allows only special accessories less than 5 Fr
in diameter and may results in ineffective suction when the cannula is
in place A
well-experienced and trained endoscopist needs to
control the tip of the sphincterotome Metallic
tip limits the use for diagnostic purpose |
Diagnostic duodenoscope |
Insertion tube 11 mm; distal end 12.6 mm; operative channel 3.2 mm Useful for children by the age of 8 months and
adults |
Therapeutic duodenoscope |
Insertion tube 11.3-12.5
mm; distal end 13.2-13.5 mm; operative channel 4.2 mm Useful for children by the age of 7 years and adults |
Accessories |
Characteristics |
Cannulae |
Working length: 170-195 cm Distal tip: 2.5-3.5-4-4.5-5-5.5-6 fr Those with tapered tip allow easier cannulation of narrow papillae |
Sphincterotomes, cannulotome |
Lumen: double, triple Working length: 170-195 cm Distal tip: 4-4.5-5 fr Different cable bending |
Guide
wires |
Tip shape: straight or angled Working length: 270-400 cm Outer diameter: 0.025-0.032-0.035 in |
Nasobiliary drainages |
Applicable to: right hepatic duct, left hepatic
duct, common bile duct Different shapes Insertion portion diameter: 5-6-7 fr |
Biliary
stents |
Shape: straight, proximal bend, center bend,
pigtail, Length: 3-4-5-6-7-8-9-10-11-12-13-14-15 cm Size: 7-8.5-10 fr |
Hydrostatic
dilators |
Balloon diameter: 12-13.5-15-16.5-18-19-20 mm |
Stone
extraction balloon |
Injection part: above, below Balloon diameter: 8.5-11.5-15-18-20 mm |
Stone
retrieval baskets |
Different shapes Opening width: 20-22 mm |
Cytology
brushers |
Outer diameter: 1-1.2-2-2.4-3-5 mm |
Biopsy
forceps |
Shapes: oval, alligator, with or without needle Different working lengths and opening sizes |