Radical the Dude 8F Guide Catheter

The Radical the Dude 8F Guide Catheter is an 8 French guide catheter designed to introduce intravascular catheters into peripheral, coronary, and neuro vasculature during interventional procedures. It features variable stiffness along its length using hybrid ribbon technologies, a hydrophilic coating on the distal portion, and is supplied with a rotating hemostasis valve and peel-away sheath for single-use applications.

The subject device differs from its 7F predicate primarily in size: larger inner diameter (0.094 vs 0.082 inches) and outer diameter (0.105-0.110 vs 0.094-0.098 inches), with shorter usable lengths (80-110 cm vs 95-115 cm). Both devices share identical materials (Urethane, Pebax, Nylon shaft; PTFE liner; stainless steel reinforcement; hydrophilic coating), components, sterilization method (ethylene oxide), and single-use designation.

ISO 10555-1 for catheter burst, liquid leak, and air leak testing; ISO 10993-1 for biocompatibility evaluation. Bench testing included simulated use, tensile testing, torque strength, kink resistance, PTFE delamination assessment, and particulate analysis using light obscuration methods.

The subject 8F device is substantially equivalent to the 7F predicate because it maintains identical intended use, principles of operation, materials, manufacturing processes, and sterilization methods. The dimensional differences (larger diameter, shorter length) are predictable scaling changes that do not raise new safety or effectiveness questions. Performance testing demonstrates the 8F device performs equivalently to reference devices in burst, leak, tensile, kink, and biocompatibility assessments, with thrombogenicity comparable to predicate controls.