#$%^&*AU2014218356A120140918.pdf#####INTERNALLY PRESSURIZED MEDICAL DEVICES ABSTRACT There is provided a pressurized surgical instrument (50). The pressurized surgical instrument (50) comprises a body portion (14) an elongate tubular member (124) extending from the body portion (14) and defining an interior a collar (110) positioned about the elongate tubular member (124) defining a port (112) in fluid communication with the interior of the elongate tubular member (124) and a pressure delivery system (100) in fluid communication with the port (112). The pressure delivery system (100) is configured to provide an inflation fluid to the interior of the elongate tubular member (124) through the port (112).