Splashguard II®; Drain Spout and Safeguard™ Needless Urine Sampling Port 2000mL, CSR Wrap These drainage bags feature a Splashguard II®; drain spout that is designed to help prevent backsplash of urine, thus protecting the caregiver and the patient. Drainage bags also include a Safeguard™® needleless sampling port, that is accessed with a standard Luer slip syringe or blunt cannula.