Cryogenic cooling device for ophthalmic surgery, has cryogenic gas supplying duct and cryogenic gas evacuation duct formed in flexible cryogenic fluid transporting tube whose one end is directly inserted to interior of endfitting

摘要

The device has an endfitting (5) comprising a metallic end (8) contacting with area of body to be cooled and a cryogenic gas expansion chamber (7). A cryogenic gas supplying duct (11) is used for supplying gas to the chamber, and a croissant shape cryogenic gas evacuation duct (12) is used for evacuating the gas from the chamber. The cryogenic gas supplying duct and the cryogenic gas evacuation duct are formed in a common extruded flexible cryogenic fluid transporting tube (4) whose one end is directly inserted to interior of the endfitting.