Patent ID: 8784409
Filing Date: 2014-07-22
Classification: A61B,F17C

Abstract:
1. A cryogenic system comprising: a container having cryogen within said container; one or more cryoprobes outside said container for use in cryotherapeutic procedures, said one or more cryoprobes having a distal freeze zone; at least one pressurized apparatus having one or more heaters arranged therein to form a pressurized cryogen, said pressurized apparatus having at least one port, and one or more control valves; at least a first portion of said pressurized apparatus submersed in the cryogen and having a first temperature, and at least a second portion of said pressurized apparatus positioned outside the cryogen and having a second temperature greater than said first temperature; wherein said pressurized apparatus generates a pressurized cryogen and is capable of generating compressed liquid cryogen, critical cryogen, pseudo-fluidic cryogen or supercritical cryogen. a cryogenic pump submersed within the cryogen which delivers the cryogen to said port of said pressurized apparatus through at least one fill line, said fill line including a valve which opens to deliver the cryogen to said port of said pressurized apparatus and closes once said pressurized apparatus is filled to a specified level; at least one supply line connecting said pressurized apparatus to said one or more cryoprobes and directing said pressurized cryogen through to said one or more cryoprobes to said distal freeze zone; and at least one return line which returns the cryogen from said distal freeze zone of said one or more cryoprobes to said container or to a subcooling chamber; wherein said pressurized apparatus is configured to provide controlled continuous delivery of said pressurized cryogen to said distal freeze zone of said one or more cryoprobes, said controlled continuous delivery configured for manual and remote control operation.