Which condition is a contraindication to using the CSI Diamondback 360 device?

Which condition is a contraindication to using the CSI Diamondback 360 device?

• A. Thrombus-filled plaque
• B. Inability to cross a lesion with a wire
• C. Hidden calcifications only
• D. Stable, nonocclusive plaque

Answer: (A)

Thrombus-filled plaque is a contraindication because the Diamondback 360 is a mechanical atherectomy device designed to shave away calcified plaque. When thrombus is present, manipulation with the cutting burr risks dislodging clot and causing distal embolization or microvascular obstruction. The device isn’t intended to safely remove or manage intraluminal thrombus, so treating a thrombus-rich lesion with it could worsen downstream flow. In contrast, the ability to cross the lesion with a wire is a technical requirement for any device, hidden calcifications can still be addressed by the atherectomy process, and stable, nonocclusive plaque does not pose the same embolic risk.

Thrombus-filled plaque is a contraindication because the Diamondback 360 is a mechanical atherectomy device designed to shave away calcified plaque. When thrombus is present, manipulation with the cutting burr risks dislodging clot and causing distal embolization or microvascular obstruction. The device isn’t intended to safely remove or manage intraluminal thrombus, so treating a thrombus-rich lesion with it could worsen downstream flow. In contrast, the ability to cross the lesion with a wire is a technical requirement for any device, hidden calcifications can still be addressed by the atherectomy process, and stable, nonocclusive plaque does not pose the same embolic risk.