Dynarex Closed Suction Tracheostomy Catheter with Double Swivel Elbow, 14 FR.Dynarex Resp-O2 Closed Suction Trach Catheters are disposable respiratory devices designed to safely remove secretions from the respiratory tract of ventilator-dependent patients. The device allows ventilation to continue during suctioning, helps prevent cross-contamination, and protects caregivers from airborne pathogens.