Cryogenic probe for treating enlarged volume of tissue

A cryogenic probe comprising:

• a main lumen for receiving a cryogen;
• a face plane sealing a distal end of said main lumen, said face plane being reversibly displaceable in an axial direction;
• an array of a plurality of flexible needles located on an external side of said face plane, wherein said array of said flexible needles comprises at least one central needle displaced forwards with said face plane;
• and
• a deflecting means, which causes deflection of at least one needle of said plurality of flexible needles sideways with displacement of said face plane, and wherein said deflecting means includes an aperture for passage of said at least one central needle.

A cryogenic probe comprising:

• a main lumen for receiving a cryogen;
• a face plane sealing a distal end of said main lumen, said face plane being reversibly displaceable in an axial direction, wherein the face plane further comprises an internal porous coating having open pore porosity and providing a surface for boiling cryogen thereupon;
• at least one needle fastened at its proximal end on an external side of said face plane;
• and
• a deflecting means, which causes deflection of said at least one needle sideways with displacement of said face plane.

A cryogenic probe comprising:

• a main lumen for receiving a cryogen, wherein said main lumen comprises a conduit provided with a counter-flow heat exchanging means and a distal expansion orifice for receiving and allowing a high pressure gas to expand into said main lumen and to partially liquefy within said main lumen;
• a face plan sealing a distal end of said main lumen, said face plane being reversibly displaceable in an axial direction;
• at least one needle fastened at its proximal end on an external side of said face plane;
• and
• a deflecting means, which causes deflection of said at least one needle sideways with displacement of said face plane.