VIPER® Cortical Fix Fenestrated Screw System

When used in conjunction with CONFIDENCE™ High Viscosity Spinal Cement, the VIPER® and EXPEDIUM® Fenestrated Screw Systems are intended to restore the integrity of the spinal column even in the absence of fusion for a limited time period in patients with advanced stage tumors involving the thoracic and lumbar spine in whom life expectancy is of insufficient duration to permit achievement of fusion. The VIPER® and EXPEDIUM® Fenestrated Screw Systems augmented with the CONFIDENCE™ High Viscosity Spinal Cement are for use at spinal levels where the structural integrity of the spine is not severely compromised.

Viper Fenestrated Hero #1

Features & Benefits

  • Viper fenestrated features and benefits


    Screw Lengths (30-80mm; 5mm increments)


    TOP NOTCH® Feature

    Enables instruments from the EXPEDIUM® System & VIPER® System to connect directly to the implants; simplifies intraoperative maneuvers; Permits procedure to be completed Open or MIS

    Cortical Thread Form

    Provides enhanced pedicle fixation in tumor patients with diminished bone quality (for indicated patients)

    Optimized Tip (Self-Tapping & Self-Centering)

    Allows for insertion with or without tapping for indicated patients


    Screw Diameters (5-10mm; 1mm increments)


    Constant Thread Pitch

    Allows for a smooth transition between dual & quad lead thread during insertion

    6 Fenestrations (3 fenestrations on 30mm screws)

    Allow for optimal cement delivery & screw fixation for indicated patients

    Cannulation (1.75mm diameter)

    Allows for injection of cement through screw for indicated patients



VIPER®Cortical Fix Fenestrated Screw System
VIPER® Cortical Fix Fenestrated Screw System-MIS Technique
VIPER® Cortical Fix Fenestrated Screw System-Open Technique


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