초록 ▼

Cryocoolers for use in cryosurgery and other applications comprising finned tube helical coil heat exchangers and warming gas flow through a warming gas supply line fitted Joule-Thomson nozzle. The cryocoolers use helium, hydrogen or neon as a warming gas which is expanded from the Joule-Thomson noz

Cryocoolers for use in cryosurgery and other applications comprising finned tube helical coil heat exchangers and warming gas flow through a warming gas supply line fitted Joule-Thomson nozzle. The cryocoolers use helium, hydrogen or neon as a warming gas which is expanded from the Joule-Thomson nozzle to heat the probes.

대표청구항 ▼

[ I claim:] [1.] A cryocooler comprising:An outer sheath comprising a tube having a closed distal end defining an expansion chamber;a first high pressure gas supply line extending into the outer sheath, said first high pressure gas supply line having a distal end with a Joule-Thomson expansion nozzl

[ I claim:] [1.] A cryocooler comprising:An outer sheath comprising a tube having a closed distal end defining an expansion chamber;a first high pressure gas supply line extending into the outer sheath, said first high pressure gas supply line having a distal end with a Joule-Thomson expansion nozzle thereon, said Joule-Thomson nozzle communicating with the expansion chamber;a supply of high pressure cooling gas operably connected to the first high pressure gas supply line;a second high pressure gas supply line extending into the outer sheath, said second high pressure gas supply line having a distal end with a Joule-Thomson expansion nozzle thereon, said Joule-Thomson nozzle communicating with the expansion chamber;a supply of high pressure warming gas operably connected to the second high pressure gas supply line.