X-Flexible™ Neuro Micro-Catheter: Precision Superselective Navigation Platform for Neurointerventional Therapy

Product Overview

The X‑Flexible™ Neuro Micro‑Catheter represents a breakthrough in distal access technology, engineered to enable safe, reliable, and precise navigation into the tortuous and delicate microvasculature of the neurovascular system. Combining an ultra‑flexible distal segment with exceptional trackability and pushability, this microcatheter is designed to superselect distal cerebral and peripheral micro‑vessels for both diagnostic angiography and targeted delivery of embolic agents, coils, or liquid embolics.

Key Technical Features

1. Enhanced Distal Flexibility & Shape Retention

• Progressive Variable Stiffness Shaft: A multi‑layer composite construction provides proximal support for pushability while transitioning into an ultra‑flexible, atraumatic distal segment capable of navigating vessels with sub‑millimeter diameters and acute angulations.

• Shape‑Memory Distal Tip: The distal 3 cm can be steam‑shaped to match patient‑specific anatomy and maintains its configuration throughout the procedure without premature straightening.

2. Optimized Trackability & Crossability

• Proprietary Low‑Friction Liner: An inner polytetrafluoroethylene (PTFE) liner reduces friction by >60 % compared to conventional coatings, facilitating smooth advancement over micro‑guidewires (0.010″–0.017″).

• Hydrophilic Coating Along Entire Length: A uniform hydrophilic polymer coating ensures consistent lubricity when hydrated, improving one‑pass trackability through tortuous paths and reducing vessel trauma.

3. High Visibility & Precision Marking

• Tri‑Zone Radiopaque Marker System:

• Distal marker: Platinum‑iridium band for clear tip localization.

• Proximal marker: Tantalum band positioned 3 cm from the tip for working‑length reference.

• Additional marker at the catheter hub for quick orientation under fluoroscopy.

• MRI‑Conditional Materials: All components are non‑ferromagnetic, allowing safe use in MR‑guided interventions.

4. Therapeutic Delivery Performance

• True 1.7 Fr Distal Inner Diameter: Provides an optimal balance between crossability and lumen capacity, enabling consistent delivery of viscous embolic agents (e.g., Onyx®, PHIL™), coils, and particles without premature clogging.

• Low‑Pressure Injection Compatibility: The catheter withstands injection pressures up to 800 psi, supporting controlled contrast injection for superselective angiography and precise embolic material deployment.

Clinical Applications

• Superselective Diagnostic Angiography: Delivers contrast directly to distal cerebral, spinal, or peripheral micro‑vessels for high‑resolution lesion mapping.

• Embolization of AVMs & Dural Fistulas: Enables targeted delivery of liquid embolics, particles, or coils into fragile pathologic vasculature.

• Aneurysm Coiling & Flow‑Diverter Assistance: Provides stable distal access for coil delivery catheters and assists in positioning flow‑diversion devices.

• Tumor Embolization (e.g., Meningioma, Paraganglioma): Facilitates pre‑surgical devascularization via distal particulate or liquid embolic injection.

• Chronic Subdural Hematoma Embolization: Allows access to distal meningeal arteries for targeted particle delivery.