The Terumo Neuro FRED X Flow Diverter Stent (REF XFRED4518) is a self-expanding, dual-layer braided intracranial implant designed for the endovascular treatment of intracranial aneurysms. This 4.5 mm x 25 mm configuration is intended for use in selected parent vessel diameters within the indicated cerebrovascular anatomy. FRED X builds on the FRED platform with the addition of X Technology, a covalently bonded surface modification engineered to reduce material thrombogenicity while preserving device handling, deliverability, and flow-diverting performance.

Key Features
- Dual-layer braided design combining a low-porosity inner mesh with a high-porosity outer stent for flow diversion and vessel wall apposition
- X Technology surface modification intended to reduce material thrombogenicity
- Nominal device dimensions: 4.5 mm diameter x 25 mm length
- Three radiopaque tantalum helical strands and distal/proximal markers for fluoroscopic visualization
- Pre-loaded on a delivery system designed for resheathing and repositioning prior to final detachment
- Single-use, sterile, supplied ready for use

Clinical Applications
- Endovascular flow diversion for intracranial aneurysms in appropriately sized parent vessels
- Use within indications, contraindications, and vessel-sizing guidance described in the manufacturer Instructions for Use
- Intended for use by interventional neuroradiologists and neurointerventional specialists in a neuroangiography suite

Product Information
- Brand: Terumo Neuro (formerly MicroVention)
- Product: FRED X Flow Diverter Stent with X Technology
- Reference / UPN: XFRED4518
- Size: 4.5 mm x 25 mm
- Category: Flow diverter / neurovascular implant
- Packaging: Single-use, sterile
- Regulatory status: Not specified in the located sources; refer to local regulatory clearances and the official IFU
- Compatibility: Refer to the official IFU for microcatheter inner diameter and parent vessel sizing requirements