The CIV-Flex is a sterile, pyrogen-free transducer cover designed for use in intracranial procedures and is intended for use with SonoSite’s C11 transducer and other small footprint transducers. This intraoperative cover is recommended for procedures when an ultrasound transducer comes in contact with intracranial tissue. Current protocols require the use of a pyrogen-free cover to protect against cross-contamination and prevent transducer contact with patients suffering from Creutzfeld-Jacob (CJD) disease. If the transducer is not protected by a pyrogen-free cover and it comes into contact with TSE’s (Transmissible Spongiform Encephalopathies) it can not be sterilized by boiling or irradiating. The transducer would need to be discarded to prevent the spread of infection to other patients.