Patent Document ID: 8475441
Application ID: 12643919
Patent Flag: 1

Claim One:
1. A system for use with at least one cryoprobe for the treatment of biological tissue with thermal ablation, the system comprising: at least one cryoprobe comprising a distal treatment portion, an exchange chamber in said distal treatment portion, an inflow conduit transporting a cryogen towards said exchange chamber of the distal tissue treatment portion, and an outflow conduit for transporting said cryogen from said exchange chamber of the distal tissue treatment portion; an inflow temperature sensor at a first location along the inflow conduit and configured to detect an inflow temperature of the cryogen flowing through said inflow conduit at the first location; an outflow temperature sensor at a second location along the outflow conduit and configured to detect an outflow temperature of the cryogen flowing through said outflow conduit at the second location; and a processor programmed to receive procedure data comprising a cryogen flowrate, the inflow temperature and the outflow temperature over time; calculate a procedure signature based on the cryogen flowrate and a temperature difference between said inflow temperature and said outflow temperature over time; compare the procedure signature to a planning signature, said planning signature based on previously acquired image data of said tissue; and adjust power to the at least one cryoprobe based on comparing said procedure signature to said planning signature.