Multi-Lumen Axial Cryogenic Connector

A method of delivering a cryogen at cryogenic temperatures through a multi-lumen axial connector, the method comprising the steps of:

• providing a connector for integrating an instrument with a cryoengine, the connector compatible with cryogenic temperatures and pressures, including pressures which exceed the critical point of a cryogen while providing a leak-proof seal, the connector comprising:
• a first portion having a body and a collar, wherein the body comprises an external surface having one or more connectivity features embedded thereon and an internal configuration having a first channel and a second channel which pass through the body;
• and a second portion having a mating feature to interconnect with the first portion, the second portion further comprising an inner sleeve including an outerwall with a primary passageway formed therethrough, wherein the inner sleeve is surrounded by an outer sleeve such that a secondary passageway is formed lengthwise along the outer wall of the inner sleeve;
• wherein the connectivity features of the first portion and the mating feature of the second portion are interconnected such that the first channel of the first portion align with the primary passageway of the second portion and the second channel of the first portion aligns with the secondary passageway of the second portion;
• interconnecting the cryoengine and the instrument by engaging the connectivity feature of the first portion with the mating feature of the second portion;
• and
• activating the cryoengine to provide a flow of a cryogen through the first channel of the first portion into the primary passageway of the second portion to a distal end of the instrument, wherein the supercritical cryogen changes phase and returns through the secondary passageway of the second portion into the second channel of the first portion.