The FRED X Flow Diverter Stent from Terumo Neuro (REF XFRED4528) is a self-expanding, dual-layer braided intracranial implant designed for the endovascular treatment of intracranial aneurysms. This 4.5 mm x 34 mm configuration combines the established FRED dual-layer mesh design with a covalently bonded surface modification engineered to reduce material thrombogenicity while preserving deliverability and vessel apposition.

Key Features
- Dual-layer braided construction with an inner high-density mesh and outer low-density stent for flow diversion and wall apposition
- X Surface Technology: covalently bonded phosphorylcholine-based coating intended to reduce material thrombogenicity
- Three radiopaque helical tantalum strands plus distal and proximal flared markers for full-length fluoroscopic visualization
- Self-expanding nitinol braid with resheathing capability prior to final detachment
- Mechanical detachment system compatible with standard neurovascular microcatheters
- Nominal expanded vessel diameter 4.5 mm, working length 34 mm

Clinical Applications
- Endovascular flow diversion for intracranial aneurysms in parent vessels sized to the 4.5 mm device range
- Treatment of wide-neck, fusiform, or otherwise complex aneurysm morphologies where flow diversion is indicated
- Use within neurointerventional procedures performed by trained operators per the manufacturer Instructions for Use

Product Information
Brand: Terumo Neuro
Product: FRED X Flow Diverter Stent
REF / UPN: XFRED4528
Category: Flow Diverter
Device Diameter: 4.5 mm
Device Length: 34 mm
Construction: Dual-layer braided nitinol with tantalum radiopaque strands
Surface Treatment: X Surface Technology (phosphorylcholine-based coating)
Delivery: Mechanical detachment, microcatheter-compatible
Sterility: Supplied sterile, single use
Microcatheter Compatibility: Not specified in the located sources
Regulatory Status: Not specified in the located sources — refer to current manufacturer IFU and local regulatory approvals