Flush catheters are a type of vascular catheter designed to allow high-flow injection rates (15 to 20 ml/s)1 into large vessels, for optimal aortograms and/or phlebograms.
The most common flush catheters are:
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Properties
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have multiple side holes placed typically on the shaft, behind the tip2
allows large-volume infusions and prevents vascular injury at the tip of the catheter during power injections
uniform dispersal of contrast media
minimal recoil
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tip-shape designed to
help center the shaft in the vessel
avoid engagement and injection into a non-target vessel
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blunt leading contours
to advance without a leading guidewire
high wall strength
low friction coefficient
Indication
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aortic angiography
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superior vena cava phlebogram
Pigtail and tennis Racket catheter can also be used as a retained-fragment retriever, for recovering fragments of catheters/guidewires.