Entrained Cryogenic Droplet Transfer Method And Cryosurgical Instrument
US Patent:
5324286, Jun 28, 1994
Filed:
Jan 21, 1993
Appl. No.:
8/006466
Inventors:
Arthur A. Fowle - Brewster MA
Assignee:
Arthur A. Fowle, Inc. - Brewster MA
International Classification:
A61B 1736
US Classification:
606 23
Abstract:
A cryogenic apparatus comprises a coolant system and a probe having a cryogenically-cooled cold-tip. The probe is formed of an elongated housing having a distal end closed by the cold-tip and a proximal end connected to the coolant system. The housing is adapted to receive cryogenic droplets entrained in a warm carrier gas stream supplied by the coolant system. The carrier gas stream passes through the housing such that the entrained cryogenic droplets are transported to the distal end of the probe for cooling the cold-tip.