GUIDE CATHETERS FOR CORONARY INTERVENTION

GUIDE CATHETERS FOR CORONARY INTERVENTION

Sreeyam Srikanth

Diagnostic vs Guide catheters

? Stiffer shaft ? Larger internal diameter (ID) ? Shorter & more angulated tip (110? vs. 90?), non tapering a

traumatic tip ? Re-enforced construction (3 vs. 2 layers).

Parts of a Catheter

?Usual length= 100 cm

Catheter size

? Outer diameter = French size (5-10F) ? Inner diameter = Inches ? Length in cm ( usually 100 cm)

Cross section of catheter

Strength Support/Flexibi lity Kink resistance Polyurethane or Polyethylene

1:1 Torque Kink resistance Stainless steel/ Kevlar

Internal lumen Smooth or lubricious material Device compatibility PTFE (Polytetrafluoroethylene) like Teflon

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