Patent ID: 6468269
Filing Date: 2002-10-22
Classification: A61B

Abstract:
A cryogenic assembly for use in medical treatments, said cryogenic assembly including a cryoapplicator for application of a cryogenic medium to a surface, a cryostat for supply of cryogenic medium, an elongated cryotube for conveying cryogenic medium from said cryostat to said cryoapplicator, and a connecting device connecting said cryotube with said cryoapplicator,said elongated cryotube comprising a supply conduit for conveying cryogenic medium from said cryostat to said cryoapplicator; a discharge conduit for conveying cryogenic medium away from said cryoapplicator; a first electromagnetic valve for controlling flow of cryogenic medium through said supply conduit, said first electromagnetic valve being located in said cryotube a distance from said cryoapplicator less than {fraction (1/12)} a length of said cryotube; and a first heating device between the first electromagnetic valve and said connecting device for heating cryogenic medium in said supply line, and said cryostat comprising a second electromagnetic valve for supply of liquid cryogenic medium, a third electromagnetic valve for controlling supply of gaseous cryogenic medium, a fourth electromagnetic valve for regulating excess pressure of cryogenic medium, a second heating device for heating cryogenic medium, a level sensor for detecting a level of cryogenic medium, and a pressure sensor for detecting a pressure of cryogenic medium in said cryostat.