IRRAflow Cranial Access Bolt - The IRRAflow Cranial Access Bolt is a single use, single-lumen bolt intended for use with the IRRAflow Dual Lumen Catheter to secure the catheter to the patient's skull, sealing it to prevent unintended fluid entry or exit from the cranium. The Bolt comes pre-assembled with a Bolt Cap for securing the catheter, and a Dura Opener is included to facilitate catheter insertion by piercing the dura.Irras USA, Inc.2025-07-24