
FRED Junior System 2.5 | REF FREDJR2508
Terumo Neuro FRED Junior System 2.5 (REF FREDJR2508) is a low-profile dual-layer flow diverter designed for the endovascular treatment of intracranial aneurysms in smaller parent vessels.

The FRED X Flow Diverter Stent from Terumo Neuro (REF XFRED2520, 2.5 mm x 25 mm) is a self-expanding, dual-layer braided intracranial flow diverter designed to redirect blood flow away from intracranial aneurysms while preserving flow in adjacent perforators and side branches. The device incorporates X Technology, a covalently bonded surface modification intended to reduce material thrombogenicity. It is delivered through a microcatheter via a standard endovascular approach.
Key Features
- Dual-layer braided design combining an inner low-porosity mesh for flow diversion with an outer high-porosity stent for vessel wall apposition.
- X Technology surface modification intended to reduce platelet adhesion and material thrombogenicity.
- Radiopaque markers at proximal and distal ends plus helical tantalum strands for fluoroscopic visibility along the full device length.
- Self-expanding nitinol construction for conformability in tortuous intracranial anatomy.
- Resheathable and repositionable prior to final detachment to support accurate placement.
- Mechanical detachment system designed for controlled deployment.
- Nominal device size: 2.5 mm diameter x 25 mm length.
Clinical Applications
- Endovascular treatment of intracranial aneurysms, including wide-necked and large or giant configurations.
- Reconstruction of the parent artery across the aneurysm neck.
- Use in small to medium intracranial vessels consistent with the 2.5 mm diameter sizing.
- Indications, contraindications and patient selection criteria are defined by the manufacturer Instructions for Use and applicable regional regulatory clearances.
Product Information
- Brand: Terumo Neuro
- Product line: FRED X Flow Diverter
- Category: Flow Diverter / Neurovascular Stent
- REF / UPN: XFRED2520
- Device diameter: 2.5 mm
- Device length: 25 mm
- Construction: Dual-layer nitinol braid with tantalum radiopaque strands
- Surface treatment: X Technology covalent surface modification
- Delivery: Via compatible microcatheter (refer to IFU for compatibility)
- Sterility: Supplied sterile, single use
- Packaging: Not specified in the located sources
- Shelf life: Not specified in the located sources
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