Coloplast Self-Cath Straight Tip Closed System Intermittent Catheters from IndeMedical.com are a hybrid catheter system that is easy and convenient to use. The proprietary, microbead lubricant coating reduces urethral friction while the introducer tip is designed to reduce the risk of urinary tract infections (UTIs). The ingenious, built-in extension sleeve reduces the need for transfers and provides a means for contact-free catheter usage.