What is a contrast catheter?

Catheter is a flexible hollow tube that can be inserted into a duct, body cavity, or blood vessel. It usually consists of a caudal hub and a distal tubular body, which may be straight or in different curved shapes, with a tapered or non-tapered head end.

Interventional contrast catheters are a large classification of medical catheters with appropriate stiffness, elasticity, flexibility, and torque, and they are primarily used to provide a conduit for the contrast agent that produces the contrast effect. A good contrast catheter is usually characterized by a soft inner tube, high flow rate, and high contrast performance.

The basic construction of contrast catheter includes the sleeve connection end, which connects the contrast catheter, syringe or high-pressure syringe; the torsion-resistant segment, which is close to the sleeve-type connection end, to enhance its resistance to bending; the body, which is the main part of the catheter; the proximal end of the head, which is used to support the insertion of the contrast catheter; the distal end of the head, which is the softest end of the head of the contrast catheter; and the side holes, which are used to make the contrast agent into a doughnut-like visualization effect and to improve the contrast catheter’s Stability.

Selection of contrast catheters

The contrast catheter contains multiple properties such as torsion control ability, folding resistance, flexibility, pushing force, contrast stability, contrast effect, safety, high flow rate, shape memory and so on, which all need to be selected according to the actual situation of the patient to choose the trade-offs in the clinical application.

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