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The Zenith Flex System, including the Zetheter, Aspiration Tubing Set, and VC-701 Cliq Aspirator Pump, is indicated in the revascularization of patients with acute secondary to intracranial large vessel occlusive disease (within the internal carotid, middle cerebral - M1 and M2 segments, basilar, and vertebral arteries) within 8 hours of symptom onset. Patients who are ineligible for intravenous tissue plasminogen activator (IV t-PA) or who failed IV t-PA therapy are candidates for treatment.

The Zenith Flex System consists of the Zenith Flex Catheter, the VC-701 Cliq Aspiration Pump and the Aspiration Tubing Set. The InNeuroCo Zenith Flex Catheter is a variable stiffness catheter shaft reinforced with Stainless-Steel and Nitinol to provide support. The Stainless-Steel is wound as a double coil in the proximal section and the Nitinol is a single coil in the distal section. It has a radiopaque Platinum/Iridium marker band on the distal end. The distal 25 cm of the Zenith Flex Catheter has a hydrophilic coating. The Zenith Flex Catheter is available with an internal diameter of 0.0715 inch. The outer diameter is of 0.0850 inch in the proximal section, and tapers to a nominal of 0.082 inch in the distal section. The Zenith Flex Catheter is available in three working lengths: 115 cm, 125 cm, and 132 cm. Accessories included with the device are a Tuohy-Borst Hemostasis Valve and two peel-away Introducers and a Scout introducer. The Scout may be used to introduce the Zenith Flex Catheter into distal vasculature, thereby helping the device reach the target anatomy. The Zenith Flex Catheter is supplied sterile, nonpyrogenic, and intended for single use only. The off-the-shelf aspiration pump is provided non-sterile.