High pressure, low temperature coupling

A coupler with a formable flow path, the coupler comprising:

• a first sealing engagement that is configured to provide a first seal of the coupler at a first temperature condition;
• a second sealing engagement that is configured to provide a second seal of the coupler at a second temperature condition that is different from the first temperature condition;
• a first connector having a first coefficient of thermal expansion;
• and
• a second connector having a second coefficient of thermal expansion that is different from the first coefficient of thermal expansion;
• and
• wherein the first temperature condition comprises a first range of temperatures that includes cryogenic temperatures such that the first sealing engagement is formed at the cryogenic temperatures;
• and wherein coupler is in communication with a heater that is configured to heat a portion of at least one of the first connector and the second connector such that the coupler is configured to be thawed to release the first sealing engagement with operation of the heater.

A cryosurgery system comprising a cryosurgical tool having a cryogenic media supply conduit and a source of cryogenic media having a cryogenic media feed conduit connectable to the cryogenic media supply conduit via a coupler comprising:

• a first sealing engagement that is configured to provide a first seal of the coupler at a first temperature condition;
• a second sealing engagement that is configured to provide a second seal of the coupler at a second temperature condition that is different from the first temperature condition;
• a first connector, the first connector comprising a nickel alloy and having a first coefficient of thermal expansion;
• and
• a second connector, the second connector comprising stainless steel and having a second coefficient of thermal expansion that is different from the first coefficient of thermal expansion;
• wherein a flow path of the coupler is formable via engagement of the first connector with the second connector, the flow path being configured to receive the cryogenic media from the cryogenic media supply conduit;
• and
• wherein the first temperature condition comprises a first range of temperatures that includes cryogenic temperatures such that the first sealing engagement is formed at the cryogenic temperatures;
• and wherein the cryosurgery system further comprises a heater that is configured to heat a portion of at least one of the first connector and the second connector such that the coupler is configured to be thawed to release the first sealing engagement with operation of the heater.

A cryosurgery system configured to connect to a fluid source via a coupler with a formable flow path, the coupler comprising:

• a first sealing engagement that is configured to provide a first seal of the coupler at a first temperature condition;
• a second sealing engagement that is configured to provide a second seal of the coupler at a second temperature condition that is different from the first temperature condition;
• a first connector having a first coefficient of thermal expansion;
• and
• a second connector having a second coefficient of thermal expansion that is different from the first coefficient of thermal expansion;
• and
• wherein the formable flow path is formable via coupling of the first connector with the second connector such that a working media is allowed to flow through the flow path and the first and second temperature conditions correspond to the flow of the working media through the flow path.