Patent ID: 7425211
Filing Date: 2008-09-16
Classification: A61B

Abstract:
1. A cryogenic probe for coupling via a cryogenic conduit to a cryogenic cooling system; said cryogenic probe comprises: three concentric lumen including an outer lumen ending in a perforated tip having at least one aperture there through and a distal deflecting member; an intermediate lumen that terminates at distal end thereof in a closed bellows arrangement to which a needle array comprising at least one flexible needle is coupled, the intermediate lumen being sealingly joined by a face plane at proximal end thereof to said outer lumen; an inner lumen that is open ended and serves to bring a cryogenic medium into close proximity with distal end of the intermediate lumen such that operating pressure delivery of said cryogenic medium in said inner lumen under pressure causes said bellow's arrangement to expand, displacing said at least one needle of the needle array forwards towards said perforated tip, such that said deflecting member deflects said at least one flexible needle of said needle array, sideways and outwards through the at least one aperture, to protrude outwards from the distal end of the cryogenic probe.